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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclbasic.c,v 1.1.1.1 2001/06/13 04:33:43 dtashley Exp $ */ |
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/* |
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* tclBasic.c -- |
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* |
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* Contains the basic facilities for TCL command interpretation, |
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* including interpreter creation and deletion, command creation |
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* and deletion, and command parsing and execution. |
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* |
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* Copyright (c) 1987-1994 The Regents of the University of California. |
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* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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* Copyright (c) 1998-1999 by Scriptics Corporation. |
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* |
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* See the file "license.terms" for information on usage and redistribution |
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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* |
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* RCS: @(#) $Id: tclbasic.c,v 1.1.1.1 2001/06/13 04:33:43 dtashley Exp $ |
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*/ |
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#include "tclInt.h" |
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#include "tclCompile.h" |
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#ifndef TCL_GENERIC_ONLY |
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# include "tclPort.h" |
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#endif |
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/* |
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* Static procedures in this file: |
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*/ |
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static void DeleteInterpProc _ANSI_ARGS_((Tcl_Interp *interp)); |
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static void ProcessUnexpectedResult _ANSI_ARGS_(( |
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Tcl_Interp *interp, int returnCode)); |
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static void RecordTracebackInfo _ANSI_ARGS_(( |
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Tcl_Interp *interp, Tcl_Obj *objPtr, |
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int numSrcBytes)); |
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extern TclStubs tclStubs; |
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/* |
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* The following structure defines the commands in the Tcl core. |
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*/ |
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typedef struct { |
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char *name; /* Name of object-based command. */ |
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Tcl_CmdProc *proc; /* String-based procedure for command. */ |
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Tcl_ObjCmdProc *objProc; /* Object-based procedure for command. */ |
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CompileProc *compileProc; /* Procedure called to compile command. */ |
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int isSafe; /* If non-zero, command will be present |
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* in safe interpreter. Otherwise it will |
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* be hidden. */ |
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} CmdInfo; |
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/* |
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* The built-in commands, and the procedures that implement them: |
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*/ |
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static CmdInfo builtInCmds[] = { |
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/* |
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* Commands in the generic core. Note that at least one of the proc or |
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* objProc members should be non-NULL. This avoids infinitely recursive |
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* calls between TclInvokeObjectCommand and TclInvokeStringCommand if a |
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* command name is computed at runtime and results in the name of a |
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* compiled command. |
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*/ |
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{"append", (Tcl_CmdProc *) NULL, Tcl_AppendObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"array", (Tcl_CmdProc *) NULL, Tcl_ArrayObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"binary", (Tcl_CmdProc *) NULL, Tcl_BinaryObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"break", (Tcl_CmdProc *) NULL, Tcl_BreakObjCmd, |
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TclCompileBreakCmd, 1}, |
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{"case", (Tcl_CmdProc *) NULL, Tcl_CaseObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"catch", (Tcl_CmdProc *) NULL, Tcl_CatchObjCmd, |
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TclCompileCatchCmd, 1}, |
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{"clock", (Tcl_CmdProc *) NULL, Tcl_ClockObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"concat", (Tcl_CmdProc *) NULL, Tcl_ConcatObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"continue", (Tcl_CmdProc *) NULL, Tcl_ContinueObjCmd, |
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TclCompileContinueCmd, 1}, |
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{"encoding", (Tcl_CmdProc *) NULL, Tcl_EncodingObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"error", (Tcl_CmdProc *) NULL, Tcl_ErrorObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"eval", (Tcl_CmdProc *) NULL, Tcl_EvalObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"exit", (Tcl_CmdProc *) NULL, Tcl_ExitObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"expr", (Tcl_CmdProc *) NULL, Tcl_ExprObjCmd, |
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TclCompileExprCmd, 1}, |
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{"fcopy", (Tcl_CmdProc *) NULL, Tcl_FcopyObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"fileevent", (Tcl_CmdProc *) NULL, Tcl_FileEventObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"for", (Tcl_CmdProc *) NULL, Tcl_ForObjCmd, |
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TclCompileForCmd, 1}, |
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{"foreach", (Tcl_CmdProc *) NULL, Tcl_ForeachObjCmd, |
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TclCompileForeachCmd, 1}, |
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{"format", (Tcl_CmdProc *) NULL, Tcl_FormatObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"global", (Tcl_CmdProc *) NULL, Tcl_GlobalObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"if", (Tcl_CmdProc *) NULL, Tcl_IfObjCmd, |
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TclCompileIfCmd, 1}, |
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{"incr", (Tcl_CmdProc *) NULL, Tcl_IncrObjCmd, |
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TclCompileIncrCmd, 1}, |
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{"info", (Tcl_CmdProc *) NULL, Tcl_InfoObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"join", (Tcl_CmdProc *) NULL, Tcl_JoinObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"lappend", (Tcl_CmdProc *) NULL, Tcl_LappendObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"lindex", (Tcl_CmdProc *) NULL, Tcl_LindexObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"linsert", (Tcl_CmdProc *) NULL, Tcl_LinsertObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"list", (Tcl_CmdProc *) NULL, Tcl_ListObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"llength", (Tcl_CmdProc *) NULL, Tcl_LlengthObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"load", (Tcl_CmdProc *) NULL, Tcl_LoadObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"lrange", (Tcl_CmdProc *) NULL, Tcl_LrangeObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"lreplace", (Tcl_CmdProc *) NULL, Tcl_LreplaceObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"lsearch", (Tcl_CmdProc *) NULL, Tcl_LsearchObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"lsort", (Tcl_CmdProc *) NULL, Tcl_LsortObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"namespace", (Tcl_CmdProc *) NULL, Tcl_NamespaceObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"package", (Tcl_CmdProc *) NULL, Tcl_PackageObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"proc", (Tcl_CmdProc *) NULL, Tcl_ProcObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"regexp", (Tcl_CmdProc *) NULL, Tcl_RegexpObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"regsub", (Tcl_CmdProc *) NULL, Tcl_RegsubObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"rename", (Tcl_CmdProc *) NULL, Tcl_RenameObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"return", (Tcl_CmdProc *) NULL, Tcl_ReturnObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"scan", (Tcl_CmdProc *) NULL, Tcl_ScanObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"set", (Tcl_CmdProc *) NULL, Tcl_SetObjCmd, |
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TclCompileSetCmd, 1}, |
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{"split", (Tcl_CmdProc *) NULL, Tcl_SplitObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"string", (Tcl_CmdProc *) NULL, Tcl_StringObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"subst", (Tcl_CmdProc *) NULL, Tcl_SubstObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"switch", (Tcl_CmdProc *) NULL, Tcl_SwitchObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"trace", (Tcl_CmdProc *) NULL, Tcl_TraceObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"unset", (Tcl_CmdProc *) NULL, Tcl_UnsetObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"uplevel", (Tcl_CmdProc *) NULL, Tcl_UplevelObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"upvar", (Tcl_CmdProc *) NULL, Tcl_UpvarObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"variable", (Tcl_CmdProc *) NULL, Tcl_VariableObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"while", (Tcl_CmdProc *) NULL, Tcl_WhileObjCmd, |
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TclCompileWhileCmd, 1}, |
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/* |
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* Commands in the UNIX core: |
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*/ |
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#ifndef TCL_GENERIC_ONLY |
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{"after", (Tcl_CmdProc *) NULL, Tcl_AfterObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"cd", (Tcl_CmdProc *) NULL, Tcl_CdObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"close", (Tcl_CmdProc *) NULL, Tcl_CloseObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"eof", (Tcl_CmdProc *) NULL, Tcl_EofObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"fblocked", (Tcl_CmdProc *) NULL, Tcl_FblockedObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"fconfigure", (Tcl_CmdProc *) NULL, Tcl_FconfigureObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"file", (Tcl_CmdProc *) NULL, Tcl_FileObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"flush", (Tcl_CmdProc *) NULL, Tcl_FlushObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"gets", (Tcl_CmdProc *) NULL, Tcl_GetsObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"glob", (Tcl_CmdProc *) NULL, Tcl_GlobObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"open", (Tcl_CmdProc *) NULL, Tcl_OpenObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"pid", (Tcl_CmdProc *) NULL, Tcl_PidObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"puts", (Tcl_CmdProc *) NULL, Tcl_PutsObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"pwd", (Tcl_CmdProc *) NULL, Tcl_PwdObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"read", (Tcl_CmdProc *) NULL, Tcl_ReadObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"seek", (Tcl_CmdProc *) NULL, Tcl_SeekObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"socket", (Tcl_CmdProc *) NULL, Tcl_SocketObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"tell", (Tcl_CmdProc *) NULL, Tcl_TellObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"time", (Tcl_CmdProc *) NULL, Tcl_TimeObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"update", (Tcl_CmdProc *) NULL, Tcl_UpdateObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"vwait", (Tcl_CmdProc *) NULL, Tcl_VwaitObjCmd, |
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(CompileProc *) NULL, 1}, |
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#ifdef MAC_TCL |
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{"beep", (Tcl_CmdProc *) NULL, Tcl_BeepObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"echo", Tcl_EchoCmd, (Tcl_ObjCmdProc *) NULL, |
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(CompileProc *) NULL, 0}, |
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{"ls", (Tcl_CmdProc *) NULL, Tcl_LsObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"resource", (Tcl_CmdProc *) NULL, Tcl_ResourceObjCmd, |
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(CompileProc *) NULL, 1}, |
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{"source", (Tcl_CmdProc *) NULL, Tcl_MacSourceObjCmd, |
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(CompileProc *) NULL, 0}, |
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#else |
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{"exec", (Tcl_CmdProc *) NULL, Tcl_ExecObjCmd, |
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(CompileProc *) NULL, 0}, |
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{"source", (Tcl_CmdProc *) NULL, Tcl_SourceObjCmd, |
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(CompileProc *) NULL, 0}, |
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#endif /* MAC_TCL */ |
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#endif /* TCL_GENERIC_ONLY */ |
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{NULL, (Tcl_CmdProc *) NULL, (Tcl_ObjCmdProc *) NULL, |
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(CompileProc *) NULL, 0} |
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}; |
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/* |
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*---------------------------------------------------------------------- |
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* |
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* Tcl_CreateInterp -- |
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* |
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* Create a new TCL command interpreter. |
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* |
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* Results: |
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* The return value is a token for the interpreter, which may be |
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* used in calls to procedures like Tcl_CreateCmd, Tcl_Eval, or |
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* Tcl_DeleteInterp. |
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* |
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* Side effects: |
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* The command interpreter is initialized with an empty variable |
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* table and the built-in commands. |
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* |
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*---------------------------------------------------------------------- |
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*/ |
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Tcl_Interp * |
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Tcl_CreateInterp() |
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{ |
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Interp *iPtr; |
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Tcl_Interp *interp; |
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Command *cmdPtr; |
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BuiltinFunc *builtinFuncPtr; |
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MathFunc *mathFuncPtr; |
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Tcl_HashEntry *hPtr; |
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CmdInfo *cmdInfoPtr; |
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int i; |
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union { |
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char c[sizeof(short)]; |
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short s; |
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} order; |
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#ifdef TCL_COMPILE_STATS |
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ByteCodeStats *statsPtr; |
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#endif /* TCL_COMPILE_STATS */ |
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TclInitSubsystems(NULL); |
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/* |
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* Panic if someone updated the CallFrame structure without |
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* also updating the Tcl_CallFrame structure (or vice versa). |
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*/ |
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if (sizeof(Tcl_CallFrame) != sizeof(CallFrame)) { |
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/*NOTREACHED*/ |
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panic("Tcl_CallFrame and CallFrame are not the same size"); |
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} |
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/* |
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* Initialize support for namespaces and create the global namespace |
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* (whose name is ""; an alias is "::"). This also initializes the |
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* Tcl object type table and other object management code. |
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*/ |
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iPtr = (Interp *) ckalloc(sizeof(Interp)); |
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interp = (Tcl_Interp *) iPtr; |
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iPtr->result = iPtr->resultSpace; |
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iPtr->freeProc = NULL; |
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iPtr->errorLine = 0; |
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iPtr->objResultPtr = Tcl_NewObj(); |
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Tcl_IncrRefCount(iPtr->objResultPtr); |
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iPtr->handle = TclHandleCreate(iPtr); |
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iPtr->globalNsPtr = NULL; |
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iPtr->hiddenCmdTablePtr = NULL; |
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iPtr->interpInfo = NULL; |
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Tcl_InitHashTable(&iPtr->mathFuncTable, TCL_STRING_KEYS); |
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iPtr->numLevels = 0; |
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iPtr->maxNestingDepth = 1000; |
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iPtr->framePtr = NULL; |
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iPtr->varFramePtr = NULL; |
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iPtr->activeTracePtr = NULL; |
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iPtr->returnCode = TCL_OK; |
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iPtr->errorInfo = NULL; |
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iPtr->errorCode = NULL; |
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iPtr->appendResult = NULL; |
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iPtr->appendAvl = 0; |
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iPtr->appendUsed = 0; |
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Tcl_InitHashTable(&iPtr->packageTable, TCL_STRING_KEYS); |
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iPtr->packageUnknown = NULL; |
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iPtr->cmdCount = 0; |
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iPtr->termOffset = 0; |
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TclInitLiteralTable(&(iPtr->literalTable)); |
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iPtr->compileEpoch = 0; |
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iPtr->compiledProcPtr = NULL; |
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iPtr->resolverPtr = NULL; |
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iPtr->evalFlags = 0; |
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iPtr->scriptFile = NULL; |
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iPtr->flags = 0; |
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iPtr->tracePtr = NULL; |
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iPtr->assocData = (Tcl_HashTable *) NULL; |
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iPtr->execEnvPtr = NULL; /* set after namespaces initialized */ |
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iPtr->emptyObjPtr = Tcl_NewObj(); /* another empty object */ |
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Tcl_IncrRefCount(iPtr->emptyObjPtr); |
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iPtr->resultSpace[0] = 0; |
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iPtr->globalNsPtr = NULL; /* force creation of global ns below */ |
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iPtr->globalNsPtr = (Namespace *) Tcl_CreateNamespace(interp, "", |
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(ClientData) NULL, (Tcl_NamespaceDeleteProc *) NULL); |
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if (iPtr->globalNsPtr == NULL) { |
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panic("Tcl_CreateInterp: can't create global namespace"); |
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} |
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/* |
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* Initialize support for code compilation and execution. We call |
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* TclCreateExecEnv after initializing namespaces since it tries to |
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* reference a Tcl variable (it links to the Tcl "tcl_traceExec" |
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* variable). |
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*/ |
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iPtr->execEnvPtr = TclCreateExecEnv(interp); |
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/* |
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* Initialize the compilation and execution statistics kept for this |
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* interpreter. |
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*/ |
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#ifdef TCL_COMPILE_STATS |
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statsPtr = &(iPtr->stats); |
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statsPtr->numExecutions = 0; |
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statsPtr->numCompilations = 0; |
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statsPtr->numByteCodesFreed = 0; |
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(VOID *) memset(statsPtr->instructionCount, 0, |
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sizeof(statsPtr->instructionCount)); |
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statsPtr->totalSrcBytes = 0.0; |
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statsPtr->totalByteCodeBytes = 0.0; |
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statsPtr->currentSrcBytes = 0.0; |
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statsPtr->currentByteCodeBytes = 0.0; |
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(VOID *) memset(statsPtr->srcCount, 0, sizeof(statsPtr->srcCount)); |
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(VOID *) memset(statsPtr->byteCodeCount, 0, |
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sizeof(statsPtr->byteCodeCount)); |
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(VOID *) memset(statsPtr->lifetimeCount, 0, |
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sizeof(statsPtr->lifetimeCount)); |
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statsPtr->currentInstBytes = 0.0; |
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statsPtr->currentLitBytes = 0.0; |
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statsPtr->currentExceptBytes = 0.0; |
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statsPtr->currentAuxBytes = 0.0; |
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statsPtr->currentCmdMapBytes = 0.0; |
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statsPtr->numLiteralsCreated = 0; |
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statsPtr->totalLitStringBytes = 0.0; |
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statsPtr->currentLitStringBytes = 0.0; |
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(VOID *) memset(statsPtr->literalCount, 0, |
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sizeof(statsPtr->literalCount)); |
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#endif /* TCL_COMPILE_STATS */ |
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/* |
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* Initialise the stub table pointer. |
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*/ |
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iPtr->stubTable = &tclStubs; |
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/* |
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* Create the core commands. Do it here, rather than calling |
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* Tcl_CreateCommand, because it's faster (there's no need to check for |
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* a pre-existing command by the same name). If a command has a |
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* Tcl_CmdProc but no Tcl_ObjCmdProc, set the Tcl_ObjCmdProc to |
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* TclInvokeStringCommand. This is an object-based wrapper procedure |
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* that extracts strings, calls the string procedure, and creates an |
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* object for the result. Similarly, if a command has a Tcl_ObjCmdProc |
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* but no Tcl_CmdProc, set the Tcl_CmdProc to TclInvokeObjectCommand. |
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*/ |
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for (cmdInfoPtr = builtInCmds; cmdInfoPtr->name != NULL; |
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cmdInfoPtr++) { |
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int new; |
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Tcl_HashEntry *hPtr; |
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if ((cmdInfoPtr->proc == (Tcl_CmdProc *) NULL) |
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&& (cmdInfoPtr->objProc == (Tcl_ObjCmdProc *) NULL) |
|
|
&& (cmdInfoPtr->compileProc == (CompileProc *) NULL)) { |
|
|
panic("Tcl_CreateInterp: builtin command with NULL string and object command procs and a NULL compile proc\n"); |
|
|
} |
|
|
|
|
|
hPtr = Tcl_CreateHashEntry(&iPtr->globalNsPtr->cmdTable, |
|
|
cmdInfoPtr->name, &new); |
|
|
if (new) { |
|
|
cmdPtr = (Command *) ckalloc(sizeof(Command)); |
|
|
cmdPtr->hPtr = hPtr; |
|
|
cmdPtr->nsPtr = iPtr->globalNsPtr; |
|
|
cmdPtr->refCount = 1; |
|
|
cmdPtr->cmdEpoch = 0; |
|
|
cmdPtr->compileProc = cmdInfoPtr->compileProc; |
|
|
if (cmdInfoPtr->proc == (Tcl_CmdProc *) NULL) { |
|
|
cmdPtr->proc = TclInvokeObjectCommand; |
|
|
cmdPtr->clientData = (ClientData) cmdPtr; |
|
|
} else { |
|
|
cmdPtr->proc = cmdInfoPtr->proc; |
|
|
cmdPtr->clientData = (ClientData) NULL; |
|
|
} |
|
|
if (cmdInfoPtr->objProc == (Tcl_ObjCmdProc *) NULL) { |
|
|
cmdPtr->objProc = TclInvokeStringCommand; |
|
|
cmdPtr->objClientData = (ClientData) cmdPtr; |
|
|
} else { |
|
|
cmdPtr->objProc = cmdInfoPtr->objProc; |
|
|
cmdPtr->objClientData = (ClientData) NULL; |
|
|
} |
|
|
cmdPtr->deleteProc = NULL; |
|
|
cmdPtr->deleteData = (ClientData) NULL; |
|
|
cmdPtr->deleted = 0; |
|
|
cmdPtr->importRefPtr = NULL; |
|
|
Tcl_SetHashValue(hPtr, cmdPtr); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* Register the builtin math functions. |
|
|
*/ |
|
|
|
|
|
i = 0; |
|
|
for (builtinFuncPtr = builtinFuncTable; builtinFuncPtr->name != NULL; |
|
|
builtinFuncPtr++) { |
|
|
Tcl_CreateMathFunc((Tcl_Interp *) iPtr, builtinFuncPtr->name, |
|
|
builtinFuncPtr->numArgs, builtinFuncPtr->argTypes, |
|
|
(Tcl_MathProc *) NULL, (ClientData) 0); |
|
|
hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable, |
|
|
builtinFuncPtr->name); |
|
|
if (hPtr == NULL) { |
|
|
panic("Tcl_CreateInterp: Tcl_CreateMathFunc incorrectly registered '%s'", builtinFuncPtr->name); |
|
|
return NULL; |
|
|
} |
|
|
mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr); |
|
|
mathFuncPtr->builtinFuncIndex = i; |
|
|
i++; |
|
|
} |
|
|
iPtr->flags |= EXPR_INITIALIZED; |
|
|
|
|
|
/* |
|
|
* Do Multiple/Safe Interps Tcl init stuff |
|
|
*/ |
|
|
|
|
|
TclInterpInit(interp); |
|
|
|
|
|
/* |
|
|
* We used to create the "errorInfo" and "errorCode" global vars at this |
|
|
* point because so much of the Tcl implementation assumes they already |
|
|
* exist. This is not quite enough, however, since they can be unset |
|
|
* at any time. |
|
|
* |
|
|
* There are 2 choices: |
|
|
* + Check every place where a GetVar of those is used |
|
|
* and the NULL result is not checked (like in tclLoad.c) |
|
|
* + Make SetVar,... NULL friendly |
|
|
* We choose the second option because : |
|
|
* + It is easy and low cost to check for NULL pointer before |
|
|
* calling strlen() |
|
|
* + It can be helpfull to other people using those API |
|
|
* + Passing a NULL value to those closest 'meaning' is empty string |
|
|
* (specially with the new objects where 0 bytes strings are ok) |
|
|
* So the following init is commented out: -- dl |
|
|
* |
|
|
* (void) Tcl_SetVar2((Tcl_Interp *)iPtr, "errorInfo", (char *) NULL, |
|
|
* "", TCL_GLOBAL_ONLY); |
|
|
* (void) Tcl_SetVar2((Tcl_Interp *)iPtr, "errorCode", (char *) NULL, |
|
|
* "NONE", TCL_GLOBAL_ONLY); |
|
|
*/ |
|
|
|
|
|
#ifndef TCL_GENERIC_ONLY |
|
|
TclSetupEnv(interp); |
|
|
#endif |
|
|
|
|
|
/* |
|
|
* Compute the byte order of this machine. |
|
|
*/ |
|
|
|
|
|
order.s = 1; |
|
|
Tcl_SetVar2(interp, "tcl_platform", "byteOrder", |
|
|
((order.c[0] == 1) ? "littleEndian" : "bigEndian"), |
|
|
TCL_GLOBAL_ONLY); |
|
|
|
|
|
/* |
|
|
* Set up other variables such as tcl_version and tcl_library |
|
|
*/ |
|
|
|
|
|
Tcl_SetVar(interp, "tcl_patchLevel", TCL_PATCH_LEVEL, TCL_GLOBAL_ONLY); |
|
|
Tcl_SetVar(interp, "tcl_version", TCL_VERSION, TCL_GLOBAL_ONLY); |
|
|
Tcl_TraceVar2(interp, "tcl_precision", (char *) NULL, |
|
|
TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, |
|
|
TclPrecTraceProc, (ClientData) NULL); |
|
|
TclpSetVariables(interp); |
|
|
|
|
|
#ifdef TCL_THREADS |
|
|
/* |
|
|
* The existence of the "threaded" element of the tcl_platform array indicates |
|
|
* that this particular Tcl shell has been compiled with threads turned on. |
|
|
* Using "info exists tcl_platform(threaded)" a Tcl script can introspect on the |
|
|
* interpreter level of thread safety. |
|
|
*/ |
|
|
|
|
|
|
|
|
Tcl_SetVar2(interp, "tcl_platform", "threaded", "1", |
|
|
TCL_GLOBAL_ONLY); |
|
|
#endif |
|
|
|
|
|
/* |
|
|
* Register Tcl's version number. |
|
|
*/ |
|
|
|
|
|
Tcl_PkgProvideEx(interp, "Tcl", TCL_VERSION, (ClientData) &tclStubs); |
|
|
|
|
|
#ifdef Tcl_InitStubs |
|
|
#undef Tcl_InitStubs |
|
|
#endif |
|
|
Tcl_InitStubs(interp, TCL_VERSION, 1); |
|
|
|
|
|
return interp; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclHideUnsafeCommands -- |
|
|
* |
|
|
* Hides base commands that are not marked as safe from this |
|
|
* interpreter. |
|
|
* |
|
|
* Results: |
|
|
* TCL_OK if it succeeds, TCL_ERROR else. |
|
|
* |
|
|
* Side effects: |
|
|
* Hides functionality in an interpreter. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclHideUnsafeCommands(interp) |
|
|
Tcl_Interp *interp; /* Hide commands in this interpreter. */ |
|
|
{ |
|
|
register CmdInfo *cmdInfoPtr; |
|
|
|
|
|
if (interp == (Tcl_Interp *) NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
for (cmdInfoPtr = builtInCmds; cmdInfoPtr->name != NULL; cmdInfoPtr++) { |
|
|
if (!cmdInfoPtr->isSafe) { |
|
|
Tcl_HideCommand(interp, cmdInfoPtr->name, cmdInfoPtr->name); |
|
|
} |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CallWhenDeleted -- |
|
|
* |
|
|
* Arrange for a procedure to be called before a given |
|
|
* interpreter is deleted. The procedure is called as soon |
|
|
* as Tcl_DeleteInterp is called; if Tcl_CallWhenDeleted is |
|
|
* called on an interpreter that has already been deleted, |
|
|
* the procedure will be called when the last Tcl_Release is |
|
|
* done on the interpreter. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* When Tcl_DeleteInterp is invoked to delete interp, |
|
|
* proc will be invoked. See the manual entry for |
|
|
* details. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_CallWhenDeleted(interp, proc, clientData) |
|
|
Tcl_Interp *interp; /* Interpreter to watch. */ |
|
|
Tcl_InterpDeleteProc *proc; /* Procedure to call when interpreter |
|
|
* is about to be deleted. */ |
|
|
ClientData clientData; /* One-word value to pass to proc. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
static int assocDataCounter = 0; |
|
|
#ifdef TCL_THREADS |
|
|
static Tcl_Mutex assocMutex; |
|
|
#endif |
|
|
int new; |
|
|
char buffer[32 + TCL_INTEGER_SPACE]; |
|
|
AssocData *dPtr = (AssocData *) ckalloc(sizeof(AssocData)); |
|
|
Tcl_HashEntry *hPtr; |
|
|
|
|
|
Tcl_MutexLock(&assocMutex); |
|
|
sprintf(buffer, "Assoc Data Key #%d", assocDataCounter); |
|
|
assocDataCounter++; |
|
|
Tcl_MutexUnlock(&assocMutex); |
|
|
|
|
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
|
|
iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable)); |
|
|
Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS); |
|
|
} |
|
|
hPtr = Tcl_CreateHashEntry(iPtr->assocData, buffer, &new); |
|
|
dPtr->proc = proc; |
|
|
dPtr->clientData = clientData; |
|
|
Tcl_SetHashValue(hPtr, dPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_DontCallWhenDeleted -- |
|
|
* |
|
|
* Cancel the arrangement for a procedure to be called when |
|
|
* a given interpreter is deleted. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* If proc and clientData were previously registered as a |
|
|
* callback via Tcl_CallWhenDeleted, they are unregistered. |
|
|
* If they weren't previously registered then nothing |
|
|
* happens. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_DontCallWhenDeleted(interp, proc, clientData) |
|
|
Tcl_Interp *interp; /* Interpreter to watch. */ |
|
|
Tcl_InterpDeleteProc *proc; /* Procedure to call when interpreter |
|
|
* is about to be deleted. */ |
|
|
ClientData clientData; /* One-word value to pass to proc. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
Tcl_HashTable *hTablePtr; |
|
|
Tcl_HashSearch hSearch; |
|
|
Tcl_HashEntry *hPtr; |
|
|
AssocData *dPtr; |
|
|
|
|
|
hTablePtr = iPtr->assocData; |
|
|
if (hTablePtr == (Tcl_HashTable *) NULL) { |
|
|
return; |
|
|
} |
|
|
for (hPtr = Tcl_FirstHashEntry(hTablePtr, &hSearch); hPtr != NULL; |
|
|
hPtr = Tcl_NextHashEntry(&hSearch)) { |
|
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
|
|
if ((dPtr->proc == proc) && (dPtr->clientData == clientData)) { |
|
|
ckfree((char *) dPtr); |
|
|
Tcl_DeleteHashEntry(hPtr); |
|
|
return; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_SetAssocData -- |
|
|
* |
|
|
* Creates a named association between user-specified data, a delete |
|
|
* function and this interpreter. If the association already exists |
|
|
* the data is overwritten with the new data. The delete function will |
|
|
* be invoked when the interpreter is deleted. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Sets the associated data, creates the association if needed. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_SetAssocData(interp, name, proc, clientData) |
|
|
Tcl_Interp *interp; /* Interpreter to associate with. */ |
|
|
char *name; /* Name for association. */ |
|
|
Tcl_InterpDeleteProc *proc; /* Proc to call when interpreter is |
|
|
* about to be deleted. */ |
|
|
ClientData clientData; /* One-word value to pass to proc. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
AssocData *dPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
int new; |
|
|
|
|
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
|
|
iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable)); |
|
|
Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS); |
|
|
} |
|
|
hPtr = Tcl_CreateHashEntry(iPtr->assocData, name, &new); |
|
|
if (new == 0) { |
|
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
|
|
} else { |
|
|
dPtr = (AssocData *) ckalloc(sizeof(AssocData)); |
|
|
} |
|
|
dPtr->proc = proc; |
|
|
dPtr->clientData = clientData; |
|
|
|
|
|
Tcl_SetHashValue(hPtr, dPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_DeleteAssocData -- |
|
|
* |
|
|
* Deletes a named association of user-specified data with |
|
|
* the specified interpreter. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Deletes the association. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_DeleteAssocData(interp, name) |
|
|
Tcl_Interp *interp; /* Interpreter to associate with. */ |
|
|
char *name; /* Name of association. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
AssocData *dPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
|
|
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
|
|
return; |
|
|
} |
|
|
hPtr = Tcl_FindHashEntry(iPtr->assocData, name); |
|
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
|
|
return; |
|
|
} |
|
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
|
|
if (dPtr->proc != NULL) { |
|
|
(dPtr->proc) (dPtr->clientData, interp); |
|
|
} |
|
|
ckfree((char *) dPtr); |
|
|
Tcl_DeleteHashEntry(hPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetAssocData -- |
|
|
* |
|
|
* Returns the client data associated with this name in the |
|
|
* specified interpreter. |
|
|
* |
|
|
* Results: |
|
|
* The client data in the AssocData record denoted by the named |
|
|
* association, or NULL. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
ClientData |
|
|
Tcl_GetAssocData(interp, name, procPtr) |
|
|
Tcl_Interp *interp; /* Interpreter associated with. */ |
|
|
char *name; /* Name of association. */ |
|
|
Tcl_InterpDeleteProc **procPtr; /* Pointer to place to store address |
|
|
* of current deletion callback. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
AssocData *dPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
|
|
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
|
|
return (ClientData) NULL; |
|
|
} |
|
|
hPtr = Tcl_FindHashEntry(iPtr->assocData, name); |
|
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
|
|
return (ClientData) NULL; |
|
|
} |
|
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
|
|
if (procPtr != (Tcl_InterpDeleteProc **) NULL) { |
|
|
*procPtr = dPtr->proc; |
|
|
} |
|
|
return dPtr->clientData; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_InterpDeleted -- |
|
|
* |
|
|
* Returns nonzero if the interpreter has been deleted with a call |
|
|
* to Tcl_DeleteInterp. |
|
|
* |
|
|
* Results: |
|
|
* Nonzero if the interpreter is deleted, zero otherwise. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_InterpDeleted(interp) |
|
|
Tcl_Interp *interp; |
|
|
{ |
|
|
return (((Interp *) interp)->flags & DELETED) ? 1 : 0; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_DeleteInterp -- |
|
|
* |
|
|
* Ensures that the interpreter will be deleted eventually. If there |
|
|
* are no Tcl_Preserve calls in effect for this interpreter, it is |
|
|
* deleted immediately, otherwise the interpreter is deleted when |
|
|
* the last Tcl_Preserve is matched by a call to Tcl_Release. In either |
|
|
* case, the procedure runs the currently registered deletion callbacks. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The interpreter is marked as deleted. The caller may still use it |
|
|
* safely if there are calls to Tcl_Preserve in effect for the |
|
|
* interpreter, but further calls to Tcl_Eval etc in this interpreter |
|
|
* will fail. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_DeleteInterp(interp) |
|
|
Tcl_Interp *interp; /* Token for command interpreter (returned |
|
|
* by a previous call to Tcl_CreateInterp). */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
|
|
|
/* |
|
|
* If the interpreter has already been marked deleted, just punt. |
|
|
*/ |
|
|
|
|
|
if (iPtr->flags & DELETED) { |
|
|
return; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Mark the interpreter as deleted. No further evals will be allowed. |
|
|
*/ |
|
|
|
|
|
iPtr->flags |= DELETED; |
|
|
|
|
|
/* |
|
|
* Ensure that the interpreter is eventually deleted. |
|
|
*/ |
|
|
|
|
|
Tcl_EventuallyFree((ClientData) interp, |
|
|
(Tcl_FreeProc *) DeleteInterpProc); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* DeleteInterpProc -- |
|
|
* |
|
|
* Helper procedure to delete an interpreter. This procedure is |
|
|
* called when the last call to Tcl_Preserve on this interpreter |
|
|
* is matched by a call to Tcl_Release. The procedure cleans up |
|
|
* all resources used in the interpreter and calls all currently |
|
|
* registered interpreter deletion callbacks. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Whatever the interpreter deletion callbacks do. Frees resources |
|
|
* used by the interpreter. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
DeleteInterpProc(interp) |
|
|
Tcl_Interp *interp; /* Interpreter to delete. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
Tcl_HashEntry *hPtr; |
|
|
Tcl_HashSearch search; |
|
|
Tcl_HashTable *hTablePtr; |
|
|
ResolverScheme *resPtr, *nextResPtr; |
|
|
|
|
|
/* |
|
|
* Punt if there is an error in the Tcl_Release/Tcl_Preserve matchup. |
|
|
*/ |
|
|
|
|
|
if (iPtr->numLevels > 0) { |
|
|
panic("DeleteInterpProc called with active evals"); |
|
|
} |
|
|
|
|
|
/* |
|
|
* The interpreter should already be marked deleted; otherwise how |
|
|
* did we get here? |
|
|
*/ |
|
|
|
|
|
if (!(iPtr->flags & DELETED)) { |
|
|
panic("DeleteInterpProc called on interpreter not marked deleted"); |
|
|
} |
|
|
|
|
|
TclHandleFree(iPtr->handle); |
|
|
|
|
|
/* |
|
|
* Dismantle everything in the global namespace except for the |
|
|
* "errorInfo" and "errorCode" variables. These remain until the |
|
|
* namespace is actually destroyed, in case any errors occur. |
|
|
* |
|
|
* Dismantle the namespace here, before we clear the assocData. If any |
|
|
* background errors occur here, they will be deleted below. |
|
|
*/ |
|
|
|
|
|
TclTeardownNamespace(iPtr->globalNsPtr); |
|
|
|
|
|
/* |
|
|
* Delete all the hidden commands. |
|
|
*/ |
|
|
|
|
|
hTablePtr = iPtr->hiddenCmdTablePtr; |
|
|
if (hTablePtr != NULL) { |
|
|
/* |
|
|
* Non-pernicious deletion. The deletion callbacks will not be |
|
|
* allowed to create any new hidden or non-hidden commands. |
|
|
* Tcl_DeleteCommandFromToken() will remove the entry from the |
|
|
* hiddenCmdTablePtr. |
|
|
*/ |
|
|
|
|
|
hPtr = Tcl_FirstHashEntry(hTablePtr, &search); |
|
|
for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
|
|
Tcl_DeleteCommandFromToken(interp, |
|
|
(Tcl_Command) Tcl_GetHashValue(hPtr)); |
|
|
} |
|
|
Tcl_DeleteHashTable(hTablePtr); |
|
|
ckfree((char *) hTablePtr); |
|
|
} |
|
|
/* |
|
|
* Tear down the math function table. |
|
|
*/ |
|
|
|
|
|
for (hPtr = Tcl_FirstHashEntry(&iPtr->mathFuncTable, &search); |
|
|
hPtr != NULL; |
|
|
hPtr = Tcl_NextHashEntry(&search)) { |
|
|
ckfree((char *) Tcl_GetHashValue(hPtr)); |
|
|
} |
|
|
Tcl_DeleteHashTable(&iPtr->mathFuncTable); |
|
|
|
|
|
/* |
|
|
* Invoke deletion callbacks; note that a callback can create new |
|
|
* callbacks, so we iterate. |
|
|
*/ |
|
|
|
|
|
while (iPtr->assocData != (Tcl_HashTable *) NULL) { |
|
|
AssocData *dPtr; |
|
|
|
|
|
hTablePtr = iPtr->assocData; |
|
|
iPtr->assocData = (Tcl_HashTable *) NULL; |
|
|
for (hPtr = Tcl_FirstHashEntry(hTablePtr, &search); |
|
|
hPtr != NULL; |
|
|
hPtr = Tcl_FirstHashEntry(hTablePtr, &search)) { |
|
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
|
|
Tcl_DeleteHashEntry(hPtr); |
|
|
if (dPtr->proc != NULL) { |
|
|
(*dPtr->proc)(dPtr->clientData, interp); |
|
|
} |
|
|
ckfree((char *) dPtr); |
|
|
} |
|
|
Tcl_DeleteHashTable(hTablePtr); |
|
|
ckfree((char *) hTablePtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Finish deleting the global namespace. |
|
|
*/ |
|
|
|
|
|
Tcl_DeleteNamespace((Tcl_Namespace *) iPtr->globalNsPtr); |
|
|
|
|
|
/* |
|
|
* Free up the result *after* deleting variables, since variable |
|
|
* deletion could have transferred ownership of the result string |
|
|
* to Tcl. |
|
|
*/ |
|
|
|
|
|
Tcl_FreeResult(interp); |
|
|
interp->result = NULL; |
|
|
Tcl_DecrRefCount(iPtr->objResultPtr); |
|
|
iPtr->objResultPtr = NULL; |
|
|
if (iPtr->errorInfo != NULL) { |
|
|
ckfree(iPtr->errorInfo); |
|
|
iPtr->errorInfo = NULL; |
|
|
} |
|
|
if (iPtr->errorCode != NULL) { |
|
|
ckfree(iPtr->errorCode); |
|
|
iPtr->errorCode = NULL; |
|
|
} |
|
|
if (iPtr->appendResult != NULL) { |
|
|
ckfree(iPtr->appendResult); |
|
|
iPtr->appendResult = NULL; |
|
|
} |
|
|
TclFreePackageInfo(iPtr); |
|
|
while (iPtr->tracePtr != NULL) { |
|
|
Trace *nextPtr = iPtr->tracePtr->nextPtr; |
|
|
|
|
|
ckfree((char *) iPtr->tracePtr); |
|
|
iPtr->tracePtr = nextPtr; |
|
|
} |
|
|
if (iPtr->execEnvPtr != NULL) { |
|
|
TclDeleteExecEnv(iPtr->execEnvPtr); |
|
|
} |
|
|
Tcl_DecrRefCount(iPtr->emptyObjPtr); |
|
|
iPtr->emptyObjPtr = NULL; |
|
|
|
|
|
resPtr = iPtr->resolverPtr; |
|
|
while (resPtr) { |
|
|
nextResPtr = resPtr->nextPtr; |
|
|
ckfree(resPtr->name); |
|
|
ckfree((char *) resPtr); |
|
|
resPtr = nextResPtr; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Free up literal objects created for scripts compiled by the |
|
|
* interpreter. |
|
|
*/ |
|
|
|
|
|
TclDeleteLiteralTable(interp, &(iPtr->literalTable)); |
|
|
ckfree((char *) iPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_HideCommand -- |
|
|
* |
|
|
* Makes a command hidden so that it cannot be invoked from within |
|
|
* an interpreter, only from within an ancestor. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result; also leaves a message in the interp's result |
|
|
* if an error occurs. |
|
|
* |
|
|
* Side effects: |
|
|
* Removes a command from the command table and create an entry |
|
|
* into the hidden command table under the specified token name. |
|
|
* |
|
|
*--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_HideCommand(interp, cmdName, hiddenCmdToken) |
|
|
Tcl_Interp *interp; /* Interpreter in which to hide command. */ |
|
|
char *cmdName; /* Name of command to hide. */ |
|
|
char *hiddenCmdToken; /* Token name of the to-be-hidden command. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
Tcl_Command cmd; |
|
|
Command *cmdPtr; |
|
|
Tcl_HashTable *hiddenCmdTablePtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
int new; |
|
|
|
|
|
if (iPtr->flags & DELETED) { |
|
|
|
|
|
/* |
|
|
* The interpreter is being deleted. Do not create any new |
|
|
* structures, because it is not safe to modify the interpreter. |
|
|
*/ |
|
|
|
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Disallow hiding of commands that are currently in a namespace or |
|
|
* renaming (as part of hiding) into a namespace. |
|
|
* |
|
|
* (because the current implementation with a single global table |
|
|
* and the needed uniqueness of names cause problems with namespaces) |
|
|
* |
|
|
* we don't need to check for "::" in cmdName because the real check is |
|
|
* on the nsPtr below. |
|
|
* |
|
|
* hiddenCmdToken is just a string which is not interpreted in any way. |
|
|
* It may contain :: but the string is not interpreted as a namespace |
|
|
* qualifier command name. Thus, hiding foo::bar to foo::bar and then |
|
|
* trying to expose or invoke ::foo::bar will NOT work; but if the |
|
|
* application always uses the same strings it will get consistent |
|
|
* behaviour. |
|
|
* |
|
|
* But as we currently limit ourselves to the global namespace only |
|
|
* for the source, in order to avoid potential confusion, |
|
|
* lets prevent "::" in the token too. --dl |
|
|
*/ |
|
|
|
|
|
if (strstr(hiddenCmdToken, "::") != NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"cannot use namespace qualifiers as hidden command", |
|
|
"token (rename)", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Find the command to hide. An error is returned if cmdName can't |
|
|
* be found. Look up the command only from the global namespace. |
|
|
* Full path of the command must be given if using namespaces. |
|
|
*/ |
|
|
|
|
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
|
|
/*flags*/ TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY); |
|
|
if (cmd == (Tcl_Command) NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
cmdPtr = (Command *) cmd; |
|
|
|
|
|
/* |
|
|
* Check that the command is really in global namespace |
|
|
*/ |
|
|
|
|
|
if ( cmdPtr->nsPtr != iPtr->globalNsPtr ) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"can only hide global namespace commands", |
|
|
" (use rename then hide)", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Initialize the hidden command table if necessary. |
|
|
*/ |
|
|
|
|
|
hiddenCmdTablePtr = iPtr->hiddenCmdTablePtr; |
|
|
if (hiddenCmdTablePtr == NULL) { |
|
|
hiddenCmdTablePtr = (Tcl_HashTable *) |
|
|
ckalloc((unsigned) sizeof(Tcl_HashTable)); |
|
|
Tcl_InitHashTable(hiddenCmdTablePtr, TCL_STRING_KEYS); |
|
|
iPtr->hiddenCmdTablePtr = hiddenCmdTablePtr; |
|
|
} |
|
|
|
|
|
/* |
|
|
* It is an error to move an exposed command to a hidden command with |
|
|
* hiddenCmdToken if a hidden command with the name hiddenCmdToken already |
|
|
* exists. |
|
|
*/ |
|
|
|
|
|
hPtr = Tcl_CreateHashEntry(hiddenCmdTablePtr, hiddenCmdToken, &new); |
|
|
if (!new) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"hidden command named \"", hiddenCmdToken, "\" already exists", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Nb : This code is currently 'like' a rename to a specialy set apart |
|
|
* name table. Changes here and in TclRenameCommand must |
|
|
* be kept in synch untill the common parts are actually |
|
|
* factorized out. |
|
|
*/ |
|
|
|
|
|
/* |
|
|
* Remove the hash entry for the command from the interpreter command |
|
|
* table. This is like deleting the command, so bump its command epoch; |
|
|
* this invalidates any cached references that point to the command. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->hPtr != NULL) { |
|
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
|
|
cmdPtr->hPtr = (Tcl_HashEntry *) NULL; |
|
|
cmdPtr->cmdEpoch++; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Now link the hash table entry with the command structure. |
|
|
* We ensured above that the nsPtr was right. |
|
|
*/ |
|
|
|
|
|
cmdPtr->hPtr = hPtr; |
|
|
Tcl_SetHashValue(hPtr, (ClientData) cmdPtr); |
|
|
|
|
|
/* |
|
|
* If the command being hidden has a compile procedure, increment the |
|
|
* interpreter's compileEpoch to invalidate its compiled code. This |
|
|
* makes sure that we don't later try to execute old code compiled with |
|
|
* command-specific (i.e., inline) bytecodes for the now-hidden |
|
|
* command. This field is checked in Tcl_EvalObj and ObjInterpProc, |
|
|
* and code whose compilation epoch doesn't match is recompiled. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->compileProc != NULL) { |
|
|
iPtr->compileEpoch++; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_ExposeCommand -- |
|
|
* |
|
|
* Makes a previously hidden command callable from inside the |
|
|
* interpreter instead of only by its ancestors. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. If an error occurs, a message is left |
|
|
* in the interp's result. |
|
|
* |
|
|
* Side effects: |
|
|
* Moves commands from one hash table to another. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_ExposeCommand(interp, hiddenCmdToken, cmdName) |
|
|
Tcl_Interp *interp; /* Interpreter in which to make command |
|
|
* callable. */ |
|
|
char *hiddenCmdToken; /* Name of hidden command. */ |
|
|
char *cmdName; /* Name of to-be-exposed command. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
Command *cmdPtr; |
|
|
Namespace *nsPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
Tcl_HashTable *hiddenCmdTablePtr; |
|
|
int new; |
|
|
|
|
|
if (iPtr->flags & DELETED) { |
|
|
/* |
|
|
* The interpreter is being deleted. Do not create any new |
|
|
* structures, because it is not safe to modify the interpreter. |
|
|
*/ |
|
|
|
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Check that we have a regular name for the command |
|
|
* (that the user is not trying to do an expose and a rename |
|
|
* (to another namespace) at the same time) |
|
|
*/ |
|
|
|
|
|
if (strstr(cmdName, "::") != NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"can not expose to a namespace ", |
|
|
"(use expose to toplevel, then rename)", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Get the command from the hidden command table: |
|
|
*/ |
|
|
|
|
|
hPtr = NULL; |
|
|
hiddenCmdTablePtr = iPtr->hiddenCmdTablePtr; |
|
|
if (hiddenCmdTablePtr != NULL) { |
|
|
hPtr = Tcl_FindHashEntry(hiddenCmdTablePtr, hiddenCmdToken); |
|
|
} |
|
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"unknown hidden command \"", hiddenCmdToken, |
|
|
"\"", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
|
|
|
|
|
|
|
|
/* |
|
|
* Check that we have a true global namespace |
|
|
* command (enforced by Tcl_HideCommand() but let's double |
|
|
* check. (If it was not, we would not really know how to |
|
|
* handle it). |
|
|
*/ |
|
|
if ( cmdPtr->nsPtr != iPtr->globalNsPtr ) { |
|
|
/* |
|
|
* This case is theoritically impossible, |
|
|
* we might rather panic() than 'nicely' erroring out ? |
|
|
*/ |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"trying to expose a non global command name space command", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* This is the global table */ |
|
|
nsPtr = cmdPtr->nsPtr; |
|
|
|
|
|
/* |
|
|
* It is an error to overwrite an existing exposed command as a result |
|
|
* of exposing a previously hidden command. |
|
|
*/ |
|
|
|
|
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, cmdName, &new); |
|
|
if (!new) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"exposed command \"", cmdName, |
|
|
"\" already exists", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Remove the hash entry for the command from the interpreter hidden |
|
|
* command table. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->hPtr != NULL) { |
|
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
|
|
cmdPtr->hPtr = NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Now link the hash table entry with the command structure. |
|
|
* This is like creating a new command, so deal with any shadowing |
|
|
* of commands in the global namespace. |
|
|
*/ |
|
|
|
|
|
cmdPtr->hPtr = hPtr; |
|
|
|
|
|
Tcl_SetHashValue(hPtr, (ClientData) cmdPtr); |
|
|
|
|
|
/* |
|
|
* Not needed as we are only in the global namespace |
|
|
* (but would be needed again if we supported namespace command hiding) |
|
|
* |
|
|
* TclResetShadowedCmdRefs(interp, cmdPtr); |
|
|
*/ |
|
|
|
|
|
|
|
|
/* |
|
|
* If the command being exposed has a compile procedure, increment |
|
|
* interpreter's compileEpoch to invalidate its compiled code. This |
|
|
* makes sure that we don't later try to execute old code compiled |
|
|
* assuming the command is hidden. This field is checked in Tcl_EvalObj |
|
|
* and ObjInterpProc, and code whose compilation epoch doesn't match is |
|
|
* recompiled. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->compileProc != NULL) { |
|
|
iPtr->compileEpoch++; |
|
|
} |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CreateCommand -- |
|
|
* |
|
|
* Define a new command in a command table. |
|
|
* |
|
|
* Results: |
|
|
* The return value is a token for the command, which can |
|
|
* be used in future calls to Tcl_GetCommandName. |
|
|
* |
|
|
* Side effects: |
|
|
* If a command named cmdName already exists for interp, it is deleted. |
|
|
* In the future, when cmdName is seen as the name of a command by |
|
|
* Tcl_Eval, proc will be called. To support the bytecode interpreter, |
|
|
* the command is created with a wrapper Tcl_ObjCmdProc |
|
|
* (TclInvokeStringCommand) that eventially calls proc. When the |
|
|
* command is deleted from the table, deleteProc will be called. |
|
|
* See the manual entry for details on the calling sequence. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tcl_Command |
|
|
Tcl_CreateCommand(interp, cmdName, proc, clientData, deleteProc) |
|
|
Tcl_Interp *interp; /* Token for command interpreter returned by |
|
|
* a previous call to Tcl_CreateInterp. */ |
|
|
char *cmdName; /* Name of command. If it contains namespace |
|
|
* qualifiers, the new command is put in the |
|
|
* specified namespace; otherwise it is put |
|
|
* in the global namespace. */ |
|
|
Tcl_CmdProc *proc; /* Procedure to associate with cmdName. */ |
|
|
ClientData clientData; /* Arbitrary value passed to string proc. */ |
|
|
Tcl_CmdDeleteProc *deleteProc; |
|
|
/* If not NULL, gives a procedure to call |
|
|
* when this command is deleted. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
ImportRef *oldRefPtr = NULL; |
|
|
Namespace *nsPtr, *dummy1, *dummy2; |
|
|
Command *cmdPtr, *refCmdPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
char *tail; |
|
|
int new; |
|
|
ImportedCmdData *dataPtr; |
|
|
|
|
|
if (iPtr->flags & DELETED) { |
|
|
/* |
|
|
* The interpreter is being deleted. Don't create any new |
|
|
* commands; it's not safe to muck with the interpreter anymore. |
|
|
*/ |
|
|
|
|
|
return (Tcl_Command) NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Determine where the command should reside. If its name contains |
|
|
* namespace qualifiers, we put it in the specified namespace; |
|
|
* otherwise, we always put it in the global namespace. |
|
|
*/ |
|
|
|
|
|
if (strstr(cmdName, "::") != NULL) { |
|
|
TclGetNamespaceForQualName(interp, cmdName, (Namespace *) NULL, |
|
|
CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail); |
|
|
if ((nsPtr == NULL) || (tail == NULL)) { |
|
|
return (Tcl_Command) NULL; |
|
|
} |
|
|
} else { |
|
|
nsPtr = iPtr->globalNsPtr; |
|
|
tail = cmdName; |
|
|
} |
|
|
|
|
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
|
|
if (!new) { |
|
|
/* |
|
|
* Command already exists. Delete the old one. |
|
|
* Be careful to preserve any existing import links so we can |
|
|
* restore them down below. That way, you can redefine a |
|
|
* command and its import status will remain intact. |
|
|
*/ |
|
|
|
|
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
|
|
oldRefPtr = cmdPtr->importRefPtr; |
|
|
cmdPtr->importRefPtr = NULL; |
|
|
|
|
|
Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); |
|
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
|
|
if (!new) { |
|
|
/* |
|
|
* If the deletion callback recreated the command, just throw |
|
|
* away the new command (if we try to delete it again, we |
|
|
* could get stuck in an infinite loop). |
|
|
*/ |
|
|
|
|
|
ckfree((char*) Tcl_GetHashValue(hPtr)); |
|
|
} |
|
|
} |
|
|
cmdPtr = (Command *) ckalloc(sizeof(Command)); |
|
|
Tcl_SetHashValue(hPtr, cmdPtr); |
|
|
cmdPtr->hPtr = hPtr; |
|
|
cmdPtr->nsPtr = nsPtr; |
|
|
cmdPtr->refCount = 1; |
|
|
cmdPtr->cmdEpoch = 0; |
|
|
cmdPtr->compileProc = (CompileProc *) NULL; |
|
|
cmdPtr->objProc = TclInvokeStringCommand; |
|
|
cmdPtr->objClientData = (ClientData) cmdPtr; |
|
|
cmdPtr->proc = proc; |
|
|
cmdPtr->clientData = clientData; |
|
|
cmdPtr->deleteProc = deleteProc; |
|
|
cmdPtr->deleteData = clientData; |
|
|
cmdPtr->deleted = 0; |
|
|
cmdPtr->importRefPtr = NULL; |
|
|
|
|
|
/* |
|
|
* Plug in any existing import references found above. Be sure |
|
|
* to update all of these references to point to the new command. |
|
|
*/ |
|
|
|
|
|
if (oldRefPtr != NULL) { |
|
|
cmdPtr->importRefPtr = oldRefPtr; |
|
|
while (oldRefPtr != NULL) { |
|
|
refCmdPtr = oldRefPtr->importedCmdPtr; |
|
|
dataPtr = (ImportedCmdData*)refCmdPtr->objClientData; |
|
|
dataPtr->realCmdPtr = cmdPtr; |
|
|
oldRefPtr = oldRefPtr->nextPtr; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* We just created a command, so in its namespace and all of its parent |
|
|
* namespaces, it may shadow global commands with the same name. If any |
|
|
* shadowed commands are found, invalidate all cached command references |
|
|
* in the affected namespaces. |
|
|
*/ |
|
|
|
|
|
TclResetShadowedCmdRefs(interp, cmdPtr); |
|
|
return (Tcl_Command) cmdPtr; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CreateObjCommand -- |
|
|
* |
|
|
* Define a new object-based command in a command table. |
|
|
* |
|
|
* Results: |
|
|
* The return value is a token for the command, which can |
|
|
* be used in future calls to Tcl_GetCommandName. |
|
|
* |
|
|
* Side effects: |
|
|
* If no command named "cmdName" already exists for interp, one is |
|
|
* created. Otherwise, if a command does exist, then if the |
|
|
* object-based Tcl_ObjCmdProc is TclInvokeStringCommand, we assume |
|
|
* Tcl_CreateCommand was called previously for the same command and |
|
|
* just set its Tcl_ObjCmdProc to the argument "proc"; otherwise, we |
|
|
* delete the old command. |
|
|
* |
|
|
* In the future, during bytecode evaluation when "cmdName" is seen as |
|
|
* the name of a command by Tcl_EvalObj or Tcl_Eval, the object-based |
|
|
* Tcl_ObjCmdProc proc will be called. When the command is deleted from |
|
|
* the table, deleteProc will be called. See the manual entry for |
|
|
* details on the calling sequence. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tcl_Command |
|
|
Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc) |
|
|
Tcl_Interp *interp; /* Token for command interpreter (returned |
|
|
* by previous call to Tcl_CreateInterp). */ |
|
|
char *cmdName; /* Name of command. If it contains namespace |
|
|
* qualifiers, the new command is put in the |
|
|
* specified namespace; otherwise it is put |
|
|
* in the global namespace. */ |
|
|
Tcl_ObjCmdProc *proc; /* Object-based procedure to associate with |
|
|
* name. */ |
|
|
ClientData clientData; /* Arbitrary value to pass to object |
|
|
* procedure. */ |
|
|
Tcl_CmdDeleteProc *deleteProc; |
|
|
/* If not NULL, gives a procedure to call |
|
|
* when this command is deleted. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
ImportRef *oldRefPtr = NULL; |
|
|
Namespace *nsPtr, *dummy1, *dummy2; |
|
|
Command *cmdPtr, *refCmdPtr; |
|
|
Tcl_HashEntry *hPtr; |
|
|
char *tail; |
|
|
int new; |
|
|
ImportedCmdData *dataPtr; |
|
|
|
|
|
if (iPtr->flags & DELETED) { |
|
|
/* |
|
|
* The interpreter is being deleted. Don't create any new |
|
|
* commands; it's not safe to muck with the interpreter anymore. |
|
|
*/ |
|
|
|
|
|
return (Tcl_Command) NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Determine where the command should reside. If its name contains |
|
|
* namespace qualifiers, we put it in the specified namespace; |
|
|
* otherwise, we always put it in the global namespace. |
|
|
*/ |
|
|
|
|
|
if (strstr(cmdName, "::") != NULL) { |
|
|
TclGetNamespaceForQualName(interp, cmdName, (Namespace *) NULL, |
|
|
CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail); |
|
|
if ((nsPtr == NULL) || (tail == NULL)) { |
|
|
return (Tcl_Command) NULL; |
|
|
} |
|
|
} else { |
|
|
nsPtr = iPtr->globalNsPtr; |
|
|
tail = cmdName; |
|
|
} |
|
|
|
|
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
|
|
if (!new) { |
|
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
|
|
|
|
|
/* |
|
|
* Command already exists. If its object-based Tcl_ObjCmdProc is |
|
|
* TclInvokeStringCommand, we just set its Tcl_ObjCmdProc to the |
|
|
* argument "proc". Otherwise, we delete the old command. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->objProc == TclInvokeStringCommand) { |
|
|
cmdPtr->objProc = proc; |
|
|
cmdPtr->objClientData = clientData; |
|
|
cmdPtr->deleteProc = deleteProc; |
|
|
cmdPtr->deleteData = clientData; |
|
|
return (Tcl_Command) cmdPtr; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Otherwise, we delete the old command. Be careful to preserve |
|
|
* any existing import links so we can restore them down below. |
|
|
* That way, you can redefine a command and its import status |
|
|
* will remain intact. |
|
|
*/ |
|
|
|
|
|
oldRefPtr = cmdPtr->importRefPtr; |
|
|
cmdPtr->importRefPtr = NULL; |
|
|
|
|
|
Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); |
|
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
|
|
if (!new) { |
|
|
/* |
|
|
* If the deletion callback recreated the command, just throw |
|
|
* away the new command (if we try to delete it again, we |
|
|
* could get stuck in an infinite loop). |
|
|
*/ |
|
|
|
|
|
ckfree((char *) Tcl_GetHashValue(hPtr)); |
|
|
} |
|
|
} |
|
|
cmdPtr = (Command *) ckalloc(sizeof(Command)); |
|
|
Tcl_SetHashValue(hPtr, cmdPtr); |
|
|
cmdPtr->hPtr = hPtr; |
|
|
cmdPtr->nsPtr = nsPtr; |
|
|
cmdPtr->refCount = 1; |
|
|
cmdPtr->cmdEpoch = 0; |
|
|
cmdPtr->compileProc = (CompileProc *) NULL; |
|
|
cmdPtr->objProc = proc; |
|
|
cmdPtr->objClientData = clientData; |
|
|
cmdPtr->proc = TclInvokeObjectCommand; |
|
|
cmdPtr->clientData = (ClientData) cmdPtr; |
|
|
cmdPtr->deleteProc = deleteProc; |
|
|
cmdPtr->deleteData = clientData; |
|
|
cmdPtr->deleted = 0; |
|
|
cmdPtr->importRefPtr = NULL; |
|
|
|
|
|
/* |
|
|
* Plug in any existing import references found above. Be sure |
|
|
* to update all of these references to point to the new command. |
|
|
*/ |
|
|
|
|
|
if (oldRefPtr != NULL) { |
|
|
cmdPtr->importRefPtr = oldRefPtr; |
|
|
while (oldRefPtr != NULL) { |
|
|
refCmdPtr = oldRefPtr->importedCmdPtr; |
|
|
dataPtr = (ImportedCmdData*)refCmdPtr->objClientData; |
|
|
dataPtr->realCmdPtr = cmdPtr; |
|
|
oldRefPtr = oldRefPtr->nextPtr; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* We just created a command, so in its namespace and all of its parent |
|
|
* namespaces, it may shadow global commands with the same name. If any |
|
|
* shadowed commands are found, invalidate all cached command references |
|
|
* in the affected namespaces. |
|
|
*/ |
|
|
|
|
|
TclResetShadowedCmdRefs(interp, cmdPtr); |
|
|
return (Tcl_Command) cmdPtr; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclInvokeStringCommand -- |
|
|
* |
|
|
* "Wrapper" Tcl_ObjCmdProc used to call an existing string-based |
|
|
* Tcl_CmdProc if no object-based procedure exists for a command. A |
|
|
* pointer to this procedure is stored as the Tcl_ObjCmdProc in a |
|
|
* Command structure. It simply turns around and calls the string |
|
|
* Tcl_CmdProc in the Command structure. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl object result value. |
|
|
* |
|
|
* Side effects: |
|
|
* Besides those side effects of the called Tcl_CmdProc, |
|
|
* TclInvokeStringCommand allocates and frees storage. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclInvokeStringCommand(clientData, interp, objc, objv) |
|
|
ClientData clientData; /* Points to command's Command structure. */ |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
|
|
register int objc; /* Number of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
|
|
{ |
|
|
register Command *cmdPtr = (Command *) clientData; |
|
|
register int i; |
|
|
int result; |
|
|
|
|
|
/* |
|
|
* This procedure generates an argv array for the string arguments. It |
|
|
* starts out with stack-allocated space but uses dynamically-allocated |
|
|
* storage if needed. |
|
|
*/ |
|
|
|
|
|
#define NUM_ARGS 20 |
|
|
char *(argStorage[NUM_ARGS]); |
|
|
char **argv = argStorage; |
|
|
|
|
|
/* |
|
|
* Create the string argument array "argv". Make sure argv is large |
|
|
* enough to hold the objc arguments plus 1 extra for the zero |
|
|
* end-of-argv word. |
|
|
*/ |
|
|
|
|
|
if ((objc + 1) > NUM_ARGS) { |
|
|
argv = (char **) ckalloc((unsigned)(objc + 1) * sizeof(char *)); |
|
|
} |
|
|
|
|
|
for (i = 0; i < objc; i++) { |
|
|
argv[i] = Tcl_GetString(objv[i]); |
|
|
} |
|
|
argv[objc] = 0; |
|
|
|
|
|
/* |
|
|
* Invoke the command's string-based Tcl_CmdProc. |
|
|
*/ |
|
|
|
|
|
result = (*cmdPtr->proc)(cmdPtr->clientData, interp, objc, argv); |
|
|
|
|
|
/* |
|
|
* Free the argv array if malloc'ed storage was used. |
|
|
*/ |
|
|
|
|
|
if (argv != argStorage) { |
|
|
ckfree((char *) argv); |
|
|
} |
|
|
return result; |
|
|
#undef NUM_ARGS |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclInvokeObjectCommand -- |
|
|
* |
|
|
* "Wrapper" Tcl_CmdProc used to call an existing object-based |
|
|
* Tcl_ObjCmdProc if no string-based procedure exists for a command. |
|
|
* A pointer to this procedure is stored as the Tcl_CmdProc in a |
|
|
* Command structure. It simply turns around and calls the object |
|
|
* Tcl_ObjCmdProc in the Command structure. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl string result value. |
|
|
* |
|
|
* Side effects: |
|
|
* Besides those side effects of the called Tcl_CmdProc, |
|
|
* TclInvokeStringCommand allocates and frees storage. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclInvokeObjectCommand(clientData, interp, argc, argv) |
|
|
ClientData clientData; /* Points to command's Command structure. */ |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
|
|
int argc; /* Number of arguments. */ |
|
|
register char **argv; /* Argument strings. */ |
|
|
{ |
|
|
Command *cmdPtr = (Command *) clientData; |
|
|
register Tcl_Obj *objPtr; |
|
|
register int i; |
|
|
int length, result; |
|
|
|
|
|
/* |
|
|
* This procedure generates an objv array for object arguments that hold |
|
|
* the argv strings. It starts out with stack-allocated space but uses |
|
|
* dynamically-allocated storage if needed. |
|
|
*/ |
|
|
|
|
|
#define NUM_ARGS 20 |
|
|
Tcl_Obj *(argStorage[NUM_ARGS]); |
|
|
register Tcl_Obj **objv = argStorage; |
|
|
|
|
|
/* |
|
|
* Create the object argument array "objv". Make sure objv is large |
|
|
* enough to hold the objc arguments plus 1 extra for the zero |
|
|
* end-of-objv word. |
|
|
*/ |
|
|
|
|
|
if ((argc + 1) > NUM_ARGS) { |
|
|
objv = (Tcl_Obj **) |
|
|
ckalloc((unsigned)(argc + 1) * sizeof(Tcl_Obj *)); |
|
|
} |
|
|
|
|
|
for (i = 0; i < argc; i++) { |
|
|
length = strlen(argv[i]); |
|
|
TclNewObj(objPtr); |
|
|
TclInitStringRep(objPtr, argv[i], length); |
|
|
Tcl_IncrRefCount(objPtr); |
|
|
objv[i] = objPtr; |
|
|
} |
|
|
objv[argc] = 0; |
|
|
|
|
|
/* |
|
|
* Invoke the command's object-based Tcl_ObjCmdProc. |
|
|
*/ |
|
|
|
|
|
result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp, argc, objv); |
|
|
|
|
|
/* |
|
|
* Move the interpreter's object result to the string result, |
|
|
* then reset the object result. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
|
|
TCL_VOLATILE); |
|
|
|
|
|
/* |
|
|
* Decrement the ref counts for the argument objects created above, |
|
|
* then free the objv array if malloc'ed storage was used. |
|
|
*/ |
|
|
|
|
|
for (i = 0; i < argc; i++) { |
|
|
objPtr = objv[i]; |
|
|
Tcl_DecrRefCount(objPtr); |
|
|
} |
|
|
if (objv != argStorage) { |
|
|
ckfree((char *) objv); |
|
|
} |
|
|
return result; |
|
|
#undef NUM_ARGS |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclRenameCommand -- |
|
|
* |
|
|
* Called to give an existing Tcl command a different name. Both the |
|
|
* old command name and the new command name can have "::" namespace |
|
|
* qualifiers. If the new command has a different namespace context, |
|
|
* the command will be moved to that namespace and will execute in |
|
|
* the context of that new namespace. |
|
|
* |
|
|
* If the new command name is NULL or the null string, the command is |
|
|
* deleted. |
|
|
* |
|
|
* Results: |
|
|
* Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong. |
|
|
* |
|
|
* Side effects: |
|
|
* If anything goes wrong, an error message is returned in the |
|
|
* interpreter's result object. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclRenameCommand(interp, oldName, newName) |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
|
|
char *oldName; /* Existing command name. */ |
|
|
char *newName; /* New command name. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
char *newTail; |
|
|
Namespace *cmdNsPtr, *newNsPtr, *dummy1, *dummy2; |
|
|
Tcl_Command cmd; |
|
|
Command *cmdPtr; |
|
|
Tcl_HashEntry *hPtr, *oldHPtr; |
|
|
int new, result; |
|
|
|
|
|
/* |
|
|
* Find the existing command. An error is returned if cmdName can't |
|
|
* be found. |
|
|
*/ |
|
|
|
|
|
cmd = Tcl_FindCommand(interp, oldName, (Tcl_Namespace *) NULL, |
|
|
/*flags*/ 0); |
|
|
cmdPtr = (Command *) cmd; |
|
|
if (cmdPtr == NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "can't ", |
|
|
((newName == NULL)||(*newName == '\0'))? "delete":"rename", |
|
|
" \"", oldName, "\": command doesn't exist", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
cmdNsPtr = cmdPtr->nsPtr; |
|
|
|
|
|
/* |
|
|
* If the new command name is NULL or empty, delete the command. Do this |
|
|
* with Tcl_DeleteCommandFromToken, since we already have the command. |
|
|
*/ |
|
|
|
|
|
if ((newName == NULL) || (*newName == '\0')) { |
|
|
Tcl_DeleteCommandFromToken(interp, cmd); |
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Make sure that the destination command does not already exist. |
|
|
* The rename operation is like creating a command, so we should |
|
|
* automatically create the containing namespaces just like |
|
|
* Tcl_CreateCommand would. |
|
|
*/ |
|
|
|
|
|
TclGetNamespaceForQualName(interp, newName, (Namespace *) NULL, |
|
|
CREATE_NS_IF_UNKNOWN, &newNsPtr, &dummy1, &dummy2, &newTail); |
|
|
|
|
|
if ((newNsPtr == NULL) || (newTail == NULL)) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"can't rename to \"", newName, "\": bad command name", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
if (Tcl_FindHashEntry(&newNsPtr->cmdTable, newTail) != NULL) { |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"can't rename to \"", newName, |
|
|
"\": command already exists", (char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
|
* Warning: any changes done in the code here are likely |
|
|
* to be needed in Tcl_HideCommand() code too. |
|
|
* (until the common parts are extracted out) --dl |
|
|
*/ |
|
|
|
|
|
/* |
|
|
* Put the command in the new namespace so we can check for an alias |
|
|
* loop. Since we are adding a new command to a namespace, we must |
|
|
* handle any shadowing of the global commands that this might create. |
|
|
*/ |
|
|
|
|
|
oldHPtr = cmdPtr->hPtr; |
|
|
hPtr = Tcl_CreateHashEntry(&newNsPtr->cmdTable, newTail, &new); |
|
|
Tcl_SetHashValue(hPtr, (ClientData) cmdPtr); |
|
|
cmdPtr->hPtr = hPtr; |
|
|
cmdPtr->nsPtr = newNsPtr; |
|
|
TclResetShadowedCmdRefs(interp, cmdPtr); |
|
|
|
|
|
/* |
|
|
* Now check for an alias loop. If we detect one, put everything back |
|
|
* the way it was and report the error. |
|
|
*/ |
|
|
|
|
|
result = TclPreventAliasLoop(interp, interp, (Tcl_Command) cmdPtr); |
|
|
if (result != TCL_OK) { |
|
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
|
|
cmdPtr->hPtr = oldHPtr; |
|
|
cmdPtr->nsPtr = cmdNsPtr; |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
* The new command name is okay, so remove the command from its |
|
|
* current namespace. This is like deleting the command, so bump |
|
|
* the cmdEpoch to invalidate any cached references to the command. |
|
|
*/ |
|
|
|
|
|
Tcl_DeleteHashEntry(oldHPtr); |
|
|
cmdPtr->cmdEpoch++; |
|
|
|
|
|
/* |
|
|
* If the command being renamed has a compile procedure, increment the |
|
|
* interpreter's compileEpoch to invalidate its compiled code. This |
|
|
* makes sure that we don't later try to execute old code compiled for |
|
|
* the now-renamed command. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->compileProc != NULL) { |
|
|
iPtr->compileEpoch++; |
|
|
} |
|
|
|
|
|
return TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_SetCommandInfo -- |
|
|
* |
|
|
* Modifies various information about a Tcl command. Note that |
|
|
* this procedure will not change a command's namespace; use |
|
|
* Tcl_RenameCommand to do that. Also, the isNativeObjectProc |
|
|
* member of *infoPtr is ignored. |
|
|
* |
|
|
* Results: |
|
|
* If cmdName exists in interp, then the information at *infoPtr |
|
|
* is stored with the command in place of the current information |
|
|
* and 1 is returned. If the command doesn't exist then 0 is |
|
|
* returned. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_SetCommandInfo(interp, cmdName, infoPtr) |
|
|
Tcl_Interp *interp; /* Interpreter in which to look |
|
|
* for command. */ |
|
|
char *cmdName; /* Name of desired command. */ |
|
|
Tcl_CmdInfo *infoPtr; /* Where to find information |
|
|
* to store in the command. */ |
|
|
{ |
|
|
Tcl_Command cmd; |
|
|
Command *cmdPtr; |
|
|
|
|
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
|
|
/*flags*/ 0); |
|
|
if (cmd == (Tcl_Command) NULL) { |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/* |
|
|
* The isNativeObjectProc and nsPtr members of *infoPtr are ignored. |
|
|
*/ |
|
|
|
|
|
cmdPtr = (Command *) cmd; |
|
|
cmdPtr->proc = infoPtr->proc; |
|
|
cmdPtr->clientData = infoPtr->clientData; |
|
|
if (infoPtr->objProc == (Tcl_ObjCmdProc *) NULL) { |
|
|
cmdPtr->objProc = TclInvokeStringCommand; |
|
|
cmdPtr->objClientData = (ClientData) cmdPtr; |
|
|
} else { |
|
|
cmdPtr->objProc = infoPtr->objProc; |
|
|
cmdPtr->objClientData = infoPtr->objClientData; |
|
|
} |
|
|
cmdPtr->deleteProc = infoPtr->deleteProc; |
|
|
cmdPtr->deleteData = infoPtr->deleteData; |
|
|
return 1; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetCommandInfo -- |
|
|
* |
|
|
* Returns various information about a Tcl command. |
|
|
* |
|
|
* Results: |
|
|
* If cmdName exists in interp, then *infoPtr is modified to |
|
|
* hold information about cmdName and 1 is returned. If the |
|
|
* command doesn't exist then 0 is returned and *infoPtr isn't |
|
|
* modified. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_GetCommandInfo(interp, cmdName, infoPtr) |
|
|
Tcl_Interp *interp; /* Interpreter in which to look |
|
|
* for command. */ |
|
|
char *cmdName; /* Name of desired command. */ |
|
|
Tcl_CmdInfo *infoPtr; /* Where to store information about |
|
|
* command. */ |
|
|
{ |
|
|
Tcl_Command cmd; |
|
|
Command *cmdPtr; |
|
|
|
|
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
|
|
/*flags*/ 0); |
|
|
if (cmd == (Tcl_Command) NULL) { |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Set isNativeObjectProc 1 if objProc was registered by a call to |
|
|
* Tcl_CreateObjCommand. Otherwise set it to 0. |
|
|
*/ |
|
|
|
|
|
cmdPtr = (Command *) cmd; |
|
|
infoPtr->isNativeObjectProc = |
|
|
(cmdPtr->objProc != TclInvokeStringCommand); |
|
|
infoPtr->objProc = cmdPtr->objProc; |
|
|
infoPtr->objClientData = cmdPtr->objClientData; |
|
|
infoPtr->proc = cmdPtr->proc; |
|
|
infoPtr->clientData = cmdPtr->clientData; |
|
|
infoPtr->deleteProc = cmdPtr->deleteProc; |
|
|
infoPtr->deleteData = cmdPtr->deleteData; |
|
|
infoPtr->namespacePtr = (Tcl_Namespace *) cmdPtr->nsPtr; |
|
|
return 1; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetCommandName -- |
|
|
* |
|
|
* Given a token returned by Tcl_CreateCommand, this procedure |
|
|
* returns the current name of the command (which may have changed |
|
|
* due to renaming). |
|
|
* |
|
|
* Results: |
|
|
* The return value is the name of the given command. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
char * |
|
|
Tcl_GetCommandName(interp, command) |
|
|
Tcl_Interp *interp; /* Interpreter containing the command. */ |
|
|
Tcl_Command command; /* Token for command returned by a previous |
|
|
* call to Tcl_CreateCommand. The command |
|
|
* must not have been deleted. */ |
|
|
{ |
|
|
Command *cmdPtr = (Command *) command; |
|
|
|
|
|
if ((cmdPtr == NULL) || (cmdPtr->hPtr == NULL)) { |
|
|
|
|
|
/* |
|
|
* This should only happen if command was "created" after the |
|
|
* interpreter began to be deleted, so there isn't really any |
|
|
* command. Just return an empty string. |
|
|
*/ |
|
|
|
|
|
return ""; |
|
|
} |
|
|
return Tcl_GetHashKey(cmdPtr->hPtr->tablePtr, cmdPtr->hPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetCommandFullName -- |
|
|
* |
|
|
* Given a token returned by, e.g., Tcl_CreateCommand or |
|
|
* Tcl_FindCommand, this procedure appends to an object the command's |
|
|
* full name, qualified by a sequence of parent namespace names. The |
|
|
* command's fully-qualified name may have changed due to renaming. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The command's fully-qualified name is appended to the string |
|
|
* representation of objPtr. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_GetCommandFullName(interp, command, objPtr) |
|
|
Tcl_Interp *interp; /* Interpreter containing the command. */ |
|
|
Tcl_Command command; /* Token for command returned by a previous |
|
|
* call to Tcl_CreateCommand. The command |
|
|
* must not have been deleted. */ |
|
|
Tcl_Obj *objPtr; /* Points to the object onto which the |
|
|
* command's full name is appended. */ |
|
|
|
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
register Command *cmdPtr = (Command *) command; |
|
|
char *name; |
|
|
|
|
|
/* |
|
|
* Add the full name of the containing namespace, followed by the "::" |
|
|
* separator, and the command name. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr != NULL) { |
|
|
if (cmdPtr->nsPtr != NULL) { |
|
|
Tcl_AppendToObj(objPtr, cmdPtr->nsPtr->fullName, -1); |
|
|
if (cmdPtr->nsPtr != iPtr->globalNsPtr) { |
|
|
Tcl_AppendToObj(objPtr, "::", 2); |
|
|
} |
|
|
} |
|
|
if (cmdPtr->hPtr != NULL) { |
|
|
name = Tcl_GetHashKey(cmdPtr->hPtr->tablePtr, cmdPtr->hPtr); |
|
|
Tcl_AppendToObj(objPtr, name, -1); |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_DeleteCommand -- |
|
|
* |
|
|
* Remove the given command from the given interpreter. |
|
|
* |
|
|
* Results: |
|
|
* 0 is returned if the command was deleted successfully. |
|
|
* -1 is returned if there didn't exist a command by that name. |
|
|
* |
|
|
* Side effects: |
|
|
* cmdName will no longer be recognized as a valid command for |
|
|
* interp. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_DeleteCommand(interp, cmdName) |
|
|
Tcl_Interp *interp; /* Token for command interpreter (returned |
|
|
* by a previous Tcl_CreateInterp call). */ |
|
|
char *cmdName; /* Name of command to remove. */ |
|
|
{ |
|
|
Tcl_Command cmd; |
|
|
|
|
|
/* |
|
|
* Find the desired command and delete it. |
|
|
*/ |
|
|
|
|
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
|
|
/*flags*/ 0); |
|
|
if (cmd == (Tcl_Command) NULL) { |
|
|
return -1; |
|
|
} |
|
|
return Tcl_DeleteCommandFromToken(interp, cmd); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_DeleteCommandFromToken -- |
|
|
* |
|
|
* Removes the given command from the given interpreter. This procedure |
|
|
* resembles Tcl_DeleteCommand, but takes a Tcl_Command token instead |
|
|
* of a command name for efficiency. |
|
|
* |
|
|
* Results: |
|
|
* 0 is returned if the command was deleted successfully. |
|
|
* -1 is returned if there didn't exist a command by that name. |
|
|
* |
|
|
* Side effects: |
|
|
* The command specified by "cmd" will no longer be recognized as a |
|
|
* valid command for "interp". |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_DeleteCommandFromToken(interp, cmd) |
|
|
Tcl_Interp *interp; /* Token for command interpreter returned by |
|
|
* a previous call to Tcl_CreateInterp. */ |
|
|
Tcl_Command cmd; /* Token for command to delete. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
Command *cmdPtr = (Command *) cmd; |
|
|
ImportRef *refPtr, *nextRefPtr; |
|
|
Tcl_Command importCmd; |
|
|
|
|
|
/* |
|
|
* The code here is tricky. We can't delete the hash table entry |
|
|
* before invoking the deletion callback because there are cases |
|
|
* where the deletion callback needs to invoke the command (e.g. |
|
|
* object systems such as OTcl). However, this means that the |
|
|
* callback could try to delete or rename the command. The deleted |
|
|
* flag allows us to detect these cases and skip nested deletes. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->deleted) { |
|
|
/* |
|
|
* Another deletion is already in progress. Remove the hash |
|
|
* table entry now, but don't invoke a callback or free the |
|
|
* command structure. |
|
|
*/ |
|
|
|
|
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
|
|
cmdPtr->hPtr = NULL; |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/* |
|
|
* If the command being deleted has a compile procedure, increment the |
|
|
* interpreter's compileEpoch to invalidate its compiled code. This |
|
|
* makes sure that we don't later try to execute old code compiled with |
|
|
* command-specific (i.e., inline) bytecodes for the now-deleted |
|
|
* command. This field is checked in Tcl_EvalObj and ObjInterpProc, and |
|
|
* code whose compilation epoch doesn't match is recompiled. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->compileProc != NULL) { |
|
|
iPtr->compileEpoch++; |
|
|
} |
|
|
|
|
|
cmdPtr->deleted = 1; |
|
|
if (cmdPtr->deleteProc != NULL) { |
|
|
/* |
|
|
* Delete the command's client data. If this was an imported command |
|
|
* created when a command was imported into a namespace, this client |
|
|
* data will be a pointer to a ImportedCmdData structure describing |
|
|
* the "real" command that this imported command refers to. |
|
|
*/ |
|
|
|
|
|
/* |
|
|
* If you are getting a crash during the call to deleteProc and |
|
|
* cmdPtr->deleteProc is a pointer to the function free(), the |
|
|
* most likely cause is that your extension allocated memory |
|
|
* for the clientData argument to Tcl_CreateObjCommand() with |
|
|
* the ckalloc() macro and you are now trying to deallocate |
|
|
* this memory with free() instead of ckfree(). You should |
|
|
* pass a pointer to your own method that calls ckfree(). |
|
|
*/ |
|
|
|
|
|
(*cmdPtr->deleteProc)(cmdPtr->deleteData); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Bump the command epoch counter. This will invalidate all cached |
|
|
* references that point to this command. |
|
|
*/ |
|
|
|
|
|
cmdPtr->cmdEpoch++; |
|
|
|
|
|
/* |
|
|
* If this command was imported into other namespaces, then imported |
|
|
* commands were created that refer back to this command. Delete these |
|
|
* imported commands now. |
|
|
*/ |
|
|
|
|
|
for (refPtr = cmdPtr->importRefPtr; refPtr != NULL; |
|
|
refPtr = nextRefPtr) { |
|
|
nextRefPtr = refPtr->nextPtr; |
|
|
importCmd = (Tcl_Command) refPtr->importedCmdPtr; |
|
|
Tcl_DeleteCommandFromToken(interp, importCmd); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Don't use hPtr to delete the hash entry here, because it's |
|
|
* possible that the deletion callback renamed the command. |
|
|
* Instead, use cmdPtr->hptr, and make sure that no-one else |
|
|
* has already deleted the hash entry. |
|
|
*/ |
|
|
|
|
|
if (cmdPtr->hPtr != NULL) { |
|
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Mark the Command structure as no longer valid. This allows |
|
|
* TclExecuteByteCode to recognize when a Command has logically been |
|
|
* deleted and a pointer to this Command structure cached in a CmdName |
|
|
* object is invalid. TclExecuteByteCode will look up the command again |
|
|
* in the interpreter's command hashtable. |
|
|
*/ |
|
|
|
|
|
cmdPtr->objProc = NULL; |
|
|
|
|
|
/* |
|
|
* Now free the Command structure, unless there is another reference to |
|
|
* it from a CmdName Tcl object in some ByteCode code sequence. In that |
|
|
* case, delay the cleanup until all references are either discarded |
|
|
* (when a ByteCode is freed) or replaced by a new reference (when a |
|
|
* cached CmdName Command reference is found to be invalid and |
|
|
* TclExecuteByteCode looks up the command in the command hashtable). |
|
|
*/ |
|
|
|
|
|
TclCleanupCommand(cmdPtr); |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclCleanupCommand -- |
|
|
* |
|
|
* This procedure frees up a Command structure unless it is still |
|
|
* referenced from an interpreter's command hashtable or from a CmdName |
|
|
* Tcl object representing the name of a command in a ByteCode |
|
|
* instruction sequence. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Memory gets freed unless a reference to the Command structure still |
|
|
* exists. In that case the cleanup is delayed until the command is |
|
|
* deleted or when the last ByteCode referring to it is freed. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
TclCleanupCommand(cmdPtr) |
|
|
register Command *cmdPtr; /* Points to the Command structure to |
|
|
* be freed. */ |
|
|
{ |
|
|
cmdPtr->refCount--; |
|
|
if (cmdPtr->refCount <= 0) { |
|
|
ckfree((char *) cmdPtr); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CreateMathFunc -- |
|
|
* |
|
|
* Creates a new math function for expressions in a given |
|
|
* interpreter. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The function defined by "name" is created or redefined. If the |
|
|
* function already exists then its definition is replaced; this |
|
|
* includes the builtin functions. Redefining a builtin function forces |
|
|
* all existing code to be invalidated since that code may be compiled |
|
|
* using an instruction specific to the replaced function. In addition, |
|
|
* redefioning a non-builtin function will force existing code to be |
|
|
* invalidated if the number of arguments has changed. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_CreateMathFunc(interp, name, numArgs, argTypes, proc, clientData) |
|
|
Tcl_Interp *interp; /* Interpreter in which function is |
|
|
* to be available. */ |
|
|
char *name; /* Name of function (e.g. "sin"). */ |
|
|
int numArgs; /* Nnumber of arguments required by |
|
|
* function. */ |
|
|
Tcl_ValueType *argTypes; /* Array of types acceptable for |
|
|
* each argument. */ |
|
|
Tcl_MathProc *proc; /* Procedure that implements the |
|
|
* math function. */ |
|
|
ClientData clientData; /* Additional value to pass to the |
|
|
* function. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
Tcl_HashEntry *hPtr; |
|
|
MathFunc *mathFuncPtr; |
|
|
int new, i; |
|
|
|
|
|
hPtr = Tcl_CreateHashEntry(&iPtr->mathFuncTable, name, &new); |
|
|
if (new) { |
|
|
Tcl_SetHashValue(hPtr, ckalloc(sizeof(MathFunc))); |
|
|
} |
|
|
mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr); |
|
|
|
|
|
if (!new) { |
|
|
if (mathFuncPtr->builtinFuncIndex >= 0) { |
|
|
/* |
|
|
* We are redefining a builtin math function. Invalidate the |
|
|
* interpreter's existing code by incrementing its |
|
|
* compileEpoch member. This field is checked in Tcl_EvalObj |
|
|
* and ObjInterpProc, and code whose compilation epoch doesn't |
|
|
* match is recompiled. Newly compiled code will no longer |
|
|
* treat the function as builtin. |
|
|
*/ |
|
|
|
|
|
iPtr->compileEpoch++; |
|
|
} else { |
|
|
/* |
|
|
* A non-builtin function is being redefined. We must invalidate |
|
|
* existing code if the number of arguments has changed. This |
|
|
* is because existing code was compiled assuming that number. |
|
|
*/ |
|
|
|
|
|
if (numArgs != mathFuncPtr->numArgs) { |
|
|
iPtr->compileEpoch++; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
mathFuncPtr->builtinFuncIndex = -1; /* can't be a builtin function */ |
|
|
if (numArgs > MAX_MATH_ARGS) { |
|
|
numArgs = MAX_MATH_ARGS; |
|
|
} |
|
|
mathFuncPtr->numArgs = numArgs; |
|
|
for (i = 0; i < numArgs; i++) { |
|
|
mathFuncPtr->argTypes[i] = argTypes[i]; |
|
|
} |
|
|
mathFuncPtr->proc = proc; |
|
|
mathFuncPtr->clientData = clientData; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_EvalObjEx -- |
|
|
* |
|
|
* Execute Tcl commands stored in a Tcl object. These commands are |
|
|
* compiled into bytecodes if necessary, unless TCL_EVAL_DIRECT |
|
|
* is specified. |
|
|
* |
|
|
* Results: |
|
|
* The return value is one of the return codes defined in tcl.h |
|
|
* (such as TCL_OK), and the interpreter's result contains a value |
|
|
* to supplement the return code. |
|
|
* |
|
|
* Side effects: |
|
|
* The object is converted, if necessary, to a ByteCode object that |
|
|
* holds the bytecode instructions for the commands. Executing the |
|
|
* commands will almost certainly have side effects that depend |
|
|
* on those commands. |
|
|
* |
|
|
* Just as in Tcl_Eval, interp->termOffset is set to the offset of the |
|
|
* last character executed in the objPtr's string. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_EvalObjEx(interp, objPtr, flags) |
|
|
Tcl_Interp *interp; /* Token for command interpreter |
|
|
* (returned by a previous call to |
|
|
* Tcl_CreateInterp). */ |
|
|
register Tcl_Obj *objPtr; /* Pointer to object containing |
|
|
* commands to execute. */ |
|
|
int flags; /* Collection of OR-ed bits that |
|
|
* control the evaluation of the |
|
|
* script. Supported values are |
|
|
* TCL_EVAL_GLOBAL and |
|
|
* TCL_EVAL_DIRECT. */ |
|
|
{ |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
int evalFlags; /* Interp->evalFlags value when the |
|
|
* procedure was called. */ |
|
|
register ByteCode* codePtr; /* Tcl Internal type of bytecode. */ |
|
|
int oldCount = iPtr->cmdCount; /* Used to tell whether any commands |
|
|
* at all were executed. */ |
|
|
int numSrcBytes; |
|
|
int result; |
|
|
CallFrame *savedVarFramePtr; /* Saves old copy of iPtr->varFramePtr |
|
|
* in case TCL_EVAL_GLOBAL was set. */ |
|
|
Namespace *namespacePtr; |
|
|
|
|
|
Tcl_IncrRefCount(objPtr); |
|
|
|
|
|
if ((iPtr->flags & USE_EVAL_DIRECT) || (flags & TCL_EVAL_DIRECT)) { |
|
|
/* |
|
|
* We're not supposed to use the compiler or byte-code interpreter. |
|
|
* Let Tcl_EvalEx evaluate the command directly (and probably |
|
|
* more slowly). |
|
|
* |
|
|
* Pure List Optimization (no string representation). In this |
|
|
* case, we can safely use Tcl_EvalObjv instead and get an |
|
|
* appreciable improvement in execution speed. This is because it |
|
|
* allows us to avoid a setFromAny step that would just pack |
|
|
* everything into a string and back out again. |
|
|
* |
|
|
* USE_EVAL_DIRECT is a special flag used for testing purpose only |
|
|
* (ensure we go into the TCL_EVAL_DIRECT path, avoiding opt) |
|
|
*/ |
|
|
if (!(iPtr->flags & USE_EVAL_DIRECT) && |
|
|
(objPtr->typePtr == &tclListType) && /* is a list... */ |
|
|
(objPtr->bytes == NULL) /* ...without a string rep */) { |
|
|
register List *listRepPtr = |
|
|
(List *) objPtr->internalRep.otherValuePtr; |
|
|
result = Tcl_EvalObjv(interp, listRepPtr->elemCount, |
|
|
listRepPtr->elements, flags); |
|
|
} else { |
|
|
register char *p; |
|
|
p = Tcl_GetStringFromObj(objPtr, &numSrcBytes); |
|
|
result = Tcl_EvalEx(interp, p, numSrcBytes, flags); |
|
|
} |
|
|
Tcl_DecrRefCount(objPtr); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Prevent the object from being deleted as a side effect of evaling it. |
|
|
*/ |
|
|
|
|
|
savedVarFramePtr = iPtr->varFramePtr; |
|
|
if (flags & TCL_EVAL_GLOBAL) { |
|
|
iPtr->varFramePtr = NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Reset both the interpreter's string and object results and clear out |
|
|
* any error information. This makes sure that we return an empty |
|
|
* result if there are no commands in the command string. |
|
|
*/ |
|
|
|
|
|
Tcl_ResetResult(interp); |
|
|
|
|
|
/* |
|
|
* Check depth of nested calls to Tcl_Eval: if this gets too large, |
|
|
* it's probably because of an infinite loop somewhere. |
|
|
*/ |
|
|
|
|
|
iPtr->numLevels++; |
|
|
if (iPtr->numLevels > iPtr->maxNestingDepth) { |
|
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
|
|
"too many nested calls to Tcl_EvalObj (infinite loop?)", -1); |
|
|
result = TCL_ERROR; |
|
|
goto done; |
|
|
} |
|
|
|
|
|
/* |
|
|
* On the Mac, we will never reach the default recursion limit before |
|
|
* blowing the stack. So we need to do a check here. |
|
|
*/ |
|
|
|
|
|
if (TclpCheckStackSpace() == 0) { |
|
|
/*NOTREACHED*/ |
|
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
|
|
"too many nested calls to Tcl_EvalObj (infinite loop?)", -1); |
|
|
result = TCL_ERROR; |
|
|
goto done; |
|
|
} |
|
|
|
|
|
/* |
|
|
* If the interpreter has been deleted, return an error. |
|
|
*/ |
|
|
|
|
|
if (iPtr->flags & DELETED) { |
|
|
Tcl_ResetResult(interp); |
|
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
|
|
"attempt to call eval in deleted interpreter", -1); |
|
|
Tcl_SetErrorCode(interp, "CORE", "IDELETE", |
|
|
"attempt to call eval in deleted interpreter", |
|
|
(char *) NULL); |
|
|
result = TCL_ERROR; |
|
|
goto done; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Get the ByteCode from the object. If it exists, make sure it hasn't |
|
|
* been invalidated by, e.g., someone redefining a command with a |
|
|
* compile procedure (this might make the compiled code wrong). If |
|
|
* necessary, convert the object to be a ByteCode object and compile it. |
|
|
* Also, if the code was compiled in/for a different interpreter, |
|
|
* or for a different namespace, or for the same namespace but |
|
|
* with different name resolution rules, we recompile it. |
|
|
* |
|
|
* Precompiled objects, however, are immutable and therefore |
|
|
* they are not recompiled, even if the epoch has changed. |
|
|
* |
|
|
* To be pedantically correct, we should also check that the |
|
|
* originating procPtr is the same as the current context procPtr |
|
|
* (assuming one exists at all - none for global level). This |
|
|
* code is #def'ed out because [info body] was changed to never |
|
|
* return a bytecode type object, which should obviate us from |
|
|
* the extra checks here. |
|
|
*/ |
|
|
|
|
|
if (iPtr->varFramePtr != NULL) { |
|
|
namespacePtr = iPtr->varFramePtr->nsPtr; |
|
|
} else { |
|
|
namespacePtr = iPtr->globalNsPtr; |
|
|
} |
|
|
|
|
|
if (objPtr->typePtr == &tclByteCodeType) { |
|
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
|
|
|
|
|
if (((Interp *) *codePtr->interpHandle != iPtr) |
|
|
|| (codePtr->compileEpoch != iPtr->compileEpoch) |
|
|
#ifdef CHECK_PROC_ORIGINATION /* [Bug: 3412 Pedantic] */ |
|
|
|| (codePtr->procPtr != NULL && !(iPtr->varFramePtr && |
|
|
iPtr->varFramePtr->procPtr == codePtr->procPtr)) |
|
|
#endif |
|
|
|| (codePtr->nsPtr != namespacePtr) |
|
|
|| (codePtr->nsEpoch != namespacePtr->resolverEpoch)) { |
|
|
if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) { |
|
|
if ((Interp *) *codePtr->interpHandle != iPtr) { |
|
|
panic("Tcl_EvalObj: compiled script jumped interps"); |
|
|
} |
|
|
codePtr->compileEpoch = iPtr->compileEpoch; |
|
|
} else { |
|
|
tclByteCodeType.freeIntRepProc(objPtr); |
|
|
} |
|
|
} |
|
|
} |
|
|
if (objPtr->typePtr != &tclByteCodeType) { |
|
|
iPtr->errorLine = 1; |
|
|
result = tclByteCodeType.setFromAnyProc(interp, objPtr); |
|
|
if (result != TCL_OK) { |
|
|
goto done; |
|
|
} |
|
|
} else { |
|
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
|
|
if (((Interp *) *codePtr->interpHandle != iPtr) |
|
|
|| (codePtr->compileEpoch != iPtr->compileEpoch)) { |
|
|
(*tclByteCodeType.freeIntRepProc)(objPtr); |
|
|
iPtr->errorLine = 1; |
|
|
result = (*tclByteCodeType.setFromAnyProc)(interp, objPtr); |
|
|
if (result != TCL_OK) { |
|
|
iPtr->numLevels--; |
|
|
return result; |
|
|
} |
|
|
} |
|
|
} |
|
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
|
|
|
|
|
/* |
|
|
* Extract then reset the compilation flags in the interpreter. |
|
|
* Resetting the flags must be done after any compilation. |
|
|
*/ |
|
|
|
|
|
evalFlags = iPtr->evalFlags; |
|
|
iPtr->evalFlags = 0; |
|
|
|
|
|
/* |
|
|
* Execute the commands. If the code was compiled from an empty string, |
|
|
* don't bother executing the code. |
|
|
*/ |
|
|
|
|
|
numSrcBytes = codePtr->numSrcBytes; |
|
|
if ((numSrcBytes > 0) || (codePtr->flags & TCL_BYTECODE_PRECOMPILED)) { |
|
|
/* |
|
|
* Increment the code's ref count while it is being executed. If |
|
|
* afterwards no references to it remain, free the code. |
|
|
*/ |
|
|
|
|
|
codePtr->refCount++; |
|
|
result = TclExecuteByteCode(interp, codePtr); |
|
|
codePtr->refCount--; |
|
|
if (codePtr->refCount <= 0) { |
|
|
TclCleanupByteCode(codePtr); |
|
|
} |
|
|
} else { |
|
|
result = TCL_OK; |
|
|
} |
|
|
|
|
|
/* |
|
|
* If no commands at all were executed, check for asynchronous |
|
|
* handlers so that they at least get one change to execute. |
|
|
* This is needed to handle event loops written in Tcl with |
|
|
* empty bodies. |
|
|
*/ |
|
|
|
|
|
if ((oldCount == iPtr->cmdCount) && Tcl_AsyncReady()) { |
|
|
result = Tcl_AsyncInvoke(interp, result); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Update the interpreter's evaluation level count. If we are again at |
|
|
* the top level, process any unusual return code returned by the |
|
|
* evaluated code. |
|
|
*/ |
|
|
|
|
|
if (iPtr->numLevels == 1) { |
|
|
if (result == TCL_RETURN) { |
|
|
result = TclUpdateReturnInfo(iPtr); |
|
|
} |
|
|
if ((result != TCL_OK) && (result != TCL_ERROR) |
|
|
&& ((evalFlags & TCL_ALLOW_EXCEPTIONS) == 0)) { |
|
|
ProcessUnexpectedResult(interp, result); |
|
|
result = TCL_ERROR; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* If an error occurred, record information about what was being |
|
|
* executed when the error occurred. |
|
|
*/ |
|
|
|
|
|
if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) { |
|
|
RecordTracebackInfo(interp, objPtr, numSrcBytes); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Set the interpreter's termOffset member to the offset of the |
|
|
* character just after the last one executed. We approximate the offset |
|
|
* of the last character executed by using the number of characters |
|
|
* compiled. |
|
|
*/ |
|
|
|
|
|
iPtr->termOffset = numSrcBytes; |
|
|
iPtr->flags &= ~ERR_ALREADY_LOGGED; |
|
|
|
|
|
done: |
|
|
TclDecrRefCount(objPtr); |
|
|
iPtr->varFramePtr = savedVarFramePtr; |
|
|
iPtr->numLevels--; |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* ProcessUnexpectedResult -- |
|
|
* |
|
|
* Procedure called by Tcl_EvalObj to set the interpreter's result |
|
|
* value to an appropriate error message when the code it evaluates |
|
|
* returns an unexpected result code (not TCL_OK and not TCL_ERROR) to |
|
|
* the topmost evaluation level. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The interpreter result is set to an error message appropriate to |
|
|
* the result code. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
ProcessUnexpectedResult(interp, returnCode) |
|
|
Tcl_Interp *interp; /* The interpreter in which the unexpected |
|
|
* result code was returned. */ |
|
|
int returnCode; /* The unexpected result code. */ |
|
|
{ |
|
|
Tcl_ResetResult(interp); |
|
|
if (returnCode == TCL_BREAK) { |
|
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
|
|
"invoked \"break\" outside of a loop", -1); |
|
|
} else if (returnCode == TCL_CONTINUE) { |
|
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
|
|
"invoked \"continue\" outside of a loop", -1); |
|
|
} else { |
|
|
char buf[30 + TCL_INTEGER_SPACE]; |
|
|
|
|
|
sprintf(buf, "command returned bad code: %d", returnCode); |
|
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* RecordTracebackInfo -- |
|
|
* |
|
|
* Procedure called by Tcl_EvalObj to record information about what was |
|
|
* being executed when the error occurred. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* Appends information about the script being evaluated to the |
|
|
* interpreter's "errorInfo" variable. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
static void |
|
|
RecordTracebackInfo(interp, objPtr, numSrcBytes) |
|
|
Tcl_Interp *interp; /* The interpreter in which the error |
|
|
* occurred. */ |
|
|
Tcl_Obj *objPtr; /* Points to object containing script whose |
|
|
* evaluation resulted in an error. */ |
|
|
int numSrcBytes; /* Number of bytes compiled in script. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
char buf[200]; |
|
|
char *ellipsis, *bytes; |
|
|
int length; |
|
|
|
|
|
/* |
|
|
* Decide how much of the command to print in the error message |
|
|
* (up to a certain number of bytes). |
|
|
*/ |
|
|
|
|
|
bytes = Tcl_GetStringFromObj(objPtr, &length); |
|
|
length = TclMin(numSrcBytes, length); |
|
|
|
|
|
ellipsis = ""; |
|
|
if (length > 150) { |
|
|
length = 150; |
|
|
ellipsis = " ..."; |
|
|
} |
|
|
|
|
|
if (!(iPtr->flags & ERR_IN_PROGRESS)) { |
|
|
sprintf(buf, "\n while executing\n\"%.*s%s\"", |
|
|
length, bytes, ellipsis); |
|
|
} else { |
|
|
sprintf(buf, "\n invoked from within\n\"%.*s%s\"", |
|
|
length, bytes, ellipsis); |
|
|
} |
|
|
Tcl_AddObjErrorInfo(interp, buf, -1); |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_ExprLong, Tcl_ExprDouble, Tcl_ExprBoolean -- |
|
|
* |
|
|
* Procedures to evaluate an expression and return its value in a |
|
|
* particular form. |
|
|
* |
|
|
* Results: |
|
|
* Each of the procedures below returns a standard Tcl result. If an |
|
|
* error occurs then an error message is left in the interp's result. |
|
|
* Otherwise the value of the expression, in the appropriate form, |
|
|
* is stored at *ptr. If the expression had a result that was |
|
|
* incompatible with the desired form then an error is returned. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_ExprLong(interp, string, ptr) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
char *string; /* Expression to evaluate. */ |
|
|
long *ptr; /* Where to store result. */ |
|
|
{ |
|
|
register Tcl_Obj *exprPtr; |
|
|
Tcl_Obj *resultPtr; |
|
|
int length = strlen(string); |
|
|
int result = TCL_OK; |
|
|
|
|
|
if (length > 0) { |
|
|
exprPtr = Tcl_NewStringObj(string, length); |
|
|
Tcl_IncrRefCount(exprPtr); |
|
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
|
|
if (result == TCL_OK) { |
|
|
/* |
|
|
* Store an integer based on the expression result. |
|
|
*/ |
|
|
|
|
|
if (resultPtr->typePtr == &tclIntType) { |
|
|
*ptr = resultPtr->internalRep.longValue; |
|
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
|
|
*ptr = (long) resultPtr->internalRep.doubleValue; |
|
|
} else { |
|
|
Tcl_SetResult(interp, |
|
|
"expression didn't have numeric value", TCL_STATIC); |
|
|
result = TCL_ERROR; |
|
|
} |
|
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
|
|
} else { |
|
|
/* |
|
|
* Move the interpreter's object result to the string result, |
|
|
* then reset the object result. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
|
|
TCL_VOLATILE); |
|
|
} |
|
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
|
|
} else { |
|
|
/* |
|
|
* An empty string. Just set the result integer to 0. |
|
|
*/ |
|
|
|
|
|
*ptr = 0; |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
int |
|
|
Tcl_ExprDouble(interp, string, ptr) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
char *string; /* Expression to evaluate. */ |
|
|
double *ptr; /* Where to store result. */ |
|
|
{ |
|
|
register Tcl_Obj *exprPtr; |
|
|
Tcl_Obj *resultPtr; |
|
|
int length = strlen(string); |
|
|
int result = TCL_OK; |
|
|
|
|
|
if (length > 0) { |
|
|
exprPtr = Tcl_NewStringObj(string, length); |
|
|
Tcl_IncrRefCount(exprPtr); |
|
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
|
|
if (result == TCL_OK) { |
|
|
/* |
|
|
* Store a double based on the expression result. |
|
|
*/ |
|
|
|
|
|
if (resultPtr->typePtr == &tclIntType) { |
|
|
*ptr = (double) resultPtr->internalRep.longValue; |
|
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
|
|
*ptr = resultPtr->internalRep.doubleValue; |
|
|
} else { |
|
|
Tcl_SetResult(interp, |
|
|
"expression didn't have numeric value", TCL_STATIC); |
|
|
result = TCL_ERROR; |
|
|
} |
|
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
|
|
} else { |
|
|
/* |
|
|
* Move the interpreter's object result to the string result, |
|
|
* then reset the object result. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
|
|
TCL_VOLATILE); |
|
|
} |
|
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
|
|
} else { |
|
|
/* |
|
|
* An empty string. Just set the result double to 0.0. |
|
|
*/ |
|
|
|
|
|
*ptr = 0.0; |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
int |
|
|
Tcl_ExprBoolean(interp, string, ptr) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
char *string; /* Expression to evaluate. */ |
|
|
int *ptr; /* Where to store 0/1 result. */ |
|
|
{ |
|
|
register Tcl_Obj *exprPtr; |
|
|
Tcl_Obj *resultPtr; |
|
|
int length = strlen(string); |
|
|
int result = TCL_OK; |
|
|
|
|
|
if (length > 0) { |
|
|
exprPtr = Tcl_NewStringObj(string, length); |
|
|
Tcl_IncrRefCount(exprPtr); |
|
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
|
|
if (result == TCL_OK) { |
|
|
/* |
|
|
* Store a boolean based on the expression result. |
|
|
*/ |
|
|
|
|
|
if (resultPtr->typePtr == &tclIntType) { |
|
|
*ptr = (resultPtr->internalRep.longValue != 0); |
|
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
|
|
*ptr = (resultPtr->internalRep.doubleValue != 0.0); |
|
|
} else { |
|
|
result = Tcl_GetBooleanFromObj(interp, resultPtr, ptr); |
|
|
} |
|
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
|
|
} |
|
|
if (result != TCL_OK) { |
|
|
/* |
|
|
* Move the interpreter's object result to the string result, |
|
|
* then reset the object result. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
|
|
TCL_VOLATILE); |
|
|
} |
|
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
|
|
} else { |
|
|
/* |
|
|
* An empty string. Just set the result boolean to 0 (false). |
|
|
*/ |
|
|
|
|
|
*ptr = 0; |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_ExprLongObj, Tcl_ExprDoubleObj, Tcl_ExprBooleanObj -- |
|
|
* |
|
|
* Procedures to evaluate an expression in an object and return its |
|
|
* value in a particular form. |
|
|
* |
|
|
* Results: |
|
|
* Each of the procedures below returns a standard Tcl result |
|
|
* object. If an error occurs then an error message is left in the |
|
|
* interpreter's result. Otherwise the value of the expression, in the |
|
|
* appropriate form, is stored at *ptr. If the expression had a result |
|
|
* that was incompatible with the desired form then an error is |
|
|
* returned. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_ExprLongObj(interp, objPtr, ptr) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
register Tcl_Obj *objPtr; /* Expression to evaluate. */ |
|
|
long *ptr; /* Where to store long result. */ |
|
|
{ |
|
|
Tcl_Obj *resultPtr; |
|
|
int result; |
|
|
|
|
|
result = Tcl_ExprObj(interp, objPtr, &resultPtr); |
|
|
if (result == TCL_OK) { |
|
|
if (resultPtr->typePtr == &tclIntType) { |
|
|
*ptr = resultPtr->internalRep.longValue; |
|
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
|
|
*ptr = (long) resultPtr->internalRep.doubleValue; |
|
|
} else { |
|
|
result = Tcl_GetLongFromObj(interp, resultPtr, ptr); |
|
|
if (result != TCL_OK) { |
|
|
return result; |
|
|
} |
|
|
} |
|
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
int |
|
|
Tcl_ExprDoubleObj(interp, objPtr, ptr) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
register Tcl_Obj *objPtr; /* Expression to evaluate. */ |
|
|
double *ptr; /* Where to store double result. */ |
|
|
{ |
|
|
Tcl_Obj *resultPtr; |
|
|
int result; |
|
|
|
|
|
result = Tcl_ExprObj(interp, objPtr, &resultPtr); |
|
|
if (result == TCL_OK) { |
|
|
if (resultPtr->typePtr == &tclIntType) { |
|
|
*ptr = (double) resultPtr->internalRep.longValue; |
|
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
|
|
*ptr = resultPtr->internalRep.doubleValue; |
|
|
} else { |
|
|
result = Tcl_GetDoubleFromObj(interp, resultPtr, ptr); |
|
|
if (result != TCL_OK) { |
|
|
return result; |
|
|
} |
|
|
} |
|
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
int |
|
|
Tcl_ExprBooleanObj(interp, objPtr, ptr) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
register Tcl_Obj *objPtr; /* Expression to evaluate. */ |
|
|
int *ptr; /* Where to store 0/1 result. */ |
|
|
{ |
|
|
Tcl_Obj *resultPtr; |
|
|
int result; |
|
|
|
|
|
result = Tcl_ExprObj(interp, objPtr, &resultPtr); |
|
|
if (result == TCL_OK) { |
|
|
if (resultPtr->typePtr == &tclIntType) { |
|
|
*ptr = (resultPtr->internalRep.longValue != 0); |
|
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
|
|
*ptr = (resultPtr->internalRep.doubleValue != 0.0); |
|
|
} else { |
|
|
result = Tcl_GetBooleanFromObj(interp, resultPtr, ptr); |
|
|
} |
|
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclInvoke -- |
|
|
* |
|
|
* Invokes a Tcl command, given an argv/argc, from either the |
|
|
* exposed or the hidden sets of commands in the given interpreter. |
|
|
* NOTE: The command is invoked in the current stack frame of |
|
|
* the interpreter, thus it can modify local variables. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Whatever the command does. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclInvoke(interp, argc, argv, flags) |
|
|
Tcl_Interp *interp; /* Where to invoke the command. */ |
|
|
int argc; /* Count of args. */ |
|
|
register char **argv; /* The arg strings; argv[0] is the name of |
|
|
* the command to invoke. */ |
|
|
int flags; /* Combination of flags controlling the |
|
|
* call: TCL_INVOKE_HIDDEN and |
|
|
* TCL_INVOKE_NO_UNKNOWN. */ |
|
|
{ |
|
|
register Tcl_Obj *objPtr; |
|
|
register int i; |
|
|
int length, result; |
|
|
|
|
|
/* |
|
|
* This procedure generates an objv array for object arguments that hold |
|
|
* the argv strings. It starts out with stack-allocated space but uses |
|
|
* dynamically-allocated storage if needed. |
|
|
*/ |
|
|
|
|
|
#define NUM_ARGS 20 |
|
|
Tcl_Obj *(objStorage[NUM_ARGS]); |
|
|
register Tcl_Obj **objv = objStorage; |
|
|
|
|
|
/* |
|
|
* Create the object argument array "objv". Make sure objv is large |
|
|
* enough to hold the objc arguments plus 1 extra for the zero |
|
|
* end-of-objv word. |
|
|
*/ |
|
|
|
|
|
if ((argc + 1) > NUM_ARGS) { |
|
|
objv = (Tcl_Obj **) |
|
|
ckalloc((unsigned)(argc + 1) * sizeof(Tcl_Obj *)); |
|
|
} |
|
|
|
|
|
for (i = 0; i < argc; i++) { |
|
|
length = strlen(argv[i]); |
|
|
objv[i] = Tcl_NewStringObj(argv[i], length); |
|
|
Tcl_IncrRefCount(objv[i]); |
|
|
} |
|
|
objv[argc] = 0; |
|
|
|
|
|
/* |
|
|
* Use TclObjInterpProc to actually invoke the command. |
|
|
*/ |
|
|
|
|
|
result = TclObjInvoke(interp, argc, objv, flags); |
|
|
|
|
|
/* |
|
|
* Move the interpreter's object result to the string result, |
|
|
* then reset the object result. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
|
|
TCL_VOLATILE); |
|
|
|
|
|
/* |
|
|
* Decrement the ref counts on the objv elements since we are done |
|
|
* with them. |
|
|
*/ |
|
|
|
|
|
for (i = 0; i < argc; i++) { |
|
|
objPtr = objv[i]; |
|
|
Tcl_DecrRefCount(objPtr); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Free the objv array if malloc'ed storage was used. |
|
|
*/ |
|
|
|
|
|
if (objv != objStorage) { |
|
|
ckfree((char *) objv); |
|
|
} |
|
|
return result; |
|
|
#undef NUM_ARGS |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclGlobalInvoke -- |
|
|
* |
|
|
* Invokes a Tcl command, given an argv/argc, from either the |
|
|
* exposed or hidden sets of commands in the given interpreter. |
|
|
* NOTE: The command is invoked in the global stack frame of |
|
|
* the interpreter, thus it cannot see any current state on |
|
|
* the stack for that interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Whatever the command does. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclGlobalInvoke(interp, argc, argv, flags) |
|
|
Tcl_Interp *interp; /* Where to invoke the command. */ |
|
|
int argc; /* Count of args. */ |
|
|
register char **argv; /* The arg strings; argv[0] is the name of |
|
|
* the command to invoke. */ |
|
|
int flags; /* Combination of flags controlling the |
|
|
* call: TCL_INVOKE_HIDDEN and |
|
|
* TCL_INVOKE_NO_UNKNOWN. */ |
|
|
{ |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
int result; |
|
|
CallFrame *savedVarFramePtr; |
|
|
|
|
|
savedVarFramePtr = iPtr->varFramePtr; |
|
|
iPtr->varFramePtr = NULL; |
|
|
result = TclInvoke(interp, argc, argv, flags); |
|
|
iPtr->varFramePtr = savedVarFramePtr; |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclObjInvokeGlobal -- |
|
|
* |
|
|
* Object version: Invokes a Tcl command, given an objv/objc, from |
|
|
* either the exposed or hidden set of commands in the given |
|
|
* interpreter. |
|
|
* NOTE: The command is invoked in the global stack frame of the |
|
|
* interpreter, thus it cannot see any current state on the |
|
|
* stack of that interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. |
|
|
* |
|
|
* Side effects: |
|
|
* Whatever the command does. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclObjInvokeGlobal(interp, objc, objv, flags) |
|
|
Tcl_Interp *interp; /* Interpreter in which command is to be |
|
|
* invoked. */ |
|
|
int objc; /* Count of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects; objv[0] points to the |
|
|
* name of the command to invoke. */ |
|
|
int flags; /* Combination of flags controlling the |
|
|
* call: TCL_INVOKE_HIDDEN, |
|
|
* TCL_INVOKE_NO_UNKNOWN, or |
|
|
* TCL_INVOKE_NO_TRACEBACK. */ |
|
|
{ |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
int result; |
|
|
CallFrame *savedVarFramePtr; |
|
|
|
|
|
savedVarFramePtr = iPtr->varFramePtr; |
|
|
iPtr->varFramePtr = NULL; |
|
|
result = TclObjInvoke(interp, objc, objv, flags); |
|
|
iPtr->varFramePtr = savedVarFramePtr; |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* TclObjInvoke -- |
|
|
* |
|
|
* Invokes a Tcl command, given an objv/objc, from either the |
|
|
* exposed or the hidden sets of commands in the given interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl object result. |
|
|
* |
|
|
* Side effects: |
|
|
* Whatever the command does. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
TclObjInvoke(interp, objc, objv, flags) |
|
|
Tcl_Interp *interp; /* Interpreter in which command is to be |
|
|
* invoked. */ |
|
|
int objc; /* Count of arguments. */ |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects; objv[0] points to the |
|
|
* name of the command to invoke. */ |
|
|
int flags; /* Combination of flags controlling the |
|
|
* call: TCL_INVOKE_HIDDEN, |
|
|
* TCL_INVOKE_NO_UNKNOWN, or |
|
|
* TCL_INVOKE_NO_TRACEBACK. */ |
|
|
{ |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
Tcl_HashTable *hTblPtr; /* Table of hidden commands. */ |
|
|
char *cmdName; /* Name of the command from objv[0]. */ |
|
|
register Tcl_HashEntry *hPtr; |
|
|
Tcl_Command cmd; |
|
|
Command *cmdPtr; |
|
|
int localObjc; /* Used to invoke "unknown" if the */ |
|
|
Tcl_Obj **localObjv = NULL; /* command is not found. */ |
|
|
register int i; |
|
|
int length, result; |
|
|
char *bytes; |
|
|
|
|
|
if (interp == (Tcl_Interp *) NULL) { |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
if ((objc < 1) || (objv == (Tcl_Obj **) NULL)) { |
|
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
|
|
"illegal argument vector", -1); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
|
|
|
cmdName = Tcl_GetString(objv[0]); |
|
|
if (flags & TCL_INVOKE_HIDDEN) { |
|
|
/* |
|
|
* We never invoke "unknown" for hidden commands. |
|
|
*/ |
|
|
|
|
|
hPtr = NULL; |
|
|
hTblPtr = ((Interp *) interp)->hiddenCmdTablePtr; |
|
|
if (hTblPtr != NULL) { |
|
|
hPtr = Tcl_FindHashEntry(hTblPtr, cmdName); |
|
|
} |
|
|
if (hPtr == NULL) { |
|
|
Tcl_ResetResult(interp); |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"invalid hidden command name \"", cmdName, "\"", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
|
|
} else { |
|
|
cmdPtr = NULL; |
|
|
cmd = Tcl_FindCommand(interp, cmdName, |
|
|
(Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY); |
|
|
if (cmd != (Tcl_Command) NULL) { |
|
|
cmdPtr = (Command *) cmd; |
|
|
} |
|
|
if (cmdPtr == NULL) { |
|
|
if (!(flags & TCL_INVOKE_NO_UNKNOWN)) { |
|
|
cmd = Tcl_FindCommand(interp, "unknown", |
|
|
(Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY); |
|
|
if (cmd != (Tcl_Command) NULL) { |
|
|
cmdPtr = (Command *) cmd; |
|
|
} |
|
|
if (cmdPtr != NULL) { |
|
|
localObjc = (objc + 1); |
|
|
localObjv = (Tcl_Obj **) |
|
|
ckalloc((unsigned) (sizeof(Tcl_Obj *) * localObjc)); |
|
|
localObjv[0] = Tcl_NewStringObj("unknown", -1); |
|
|
Tcl_IncrRefCount(localObjv[0]); |
|
|
for (i = 0; i < objc; i++) { |
|
|
localObjv[i+1] = objv[i]; |
|
|
} |
|
|
objc = localObjc; |
|
|
objv = localObjv; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* Check again if we found the command. If not, "unknown" is |
|
|
* not present and we cannot help, or the caller said not to |
|
|
* call "unknown" (they specified TCL_INVOKE_NO_UNKNOWN). |
|
|
*/ |
|
|
|
|
|
if (cmdPtr == NULL) { |
|
|
Tcl_ResetResult(interp); |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
|
|
"invalid command name \"", cmdName, "\"", |
|
|
(char *) NULL); |
|
|
return TCL_ERROR; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* Invoke the command procedure. First reset the interpreter's string |
|
|
* and object results to their default empty values since they could |
|
|
* have gotten changed by earlier invocations. |
|
|
*/ |
|
|
|
|
|
Tcl_ResetResult(interp); |
|
|
iPtr->cmdCount++; |
|
|
result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp, objc, objv); |
|
|
|
|
|
/* |
|
|
* If an error occurred, record information about what was being |
|
|
* executed when the error occurred. |
|
|
*/ |
|
|
|
|
|
if ((result == TCL_ERROR) |
|
|
&& ((flags & TCL_INVOKE_NO_TRACEBACK) == 0) |
|
|
&& ((iPtr->flags & ERR_ALREADY_LOGGED) == 0)) { |
|
|
Tcl_DString ds; |
|
|
|
|
|
Tcl_DStringInit(&ds); |
|
|
if (!(iPtr->flags & ERR_IN_PROGRESS)) { |
|
|
Tcl_DStringAppend(&ds, "\n while invoking\n\"", -1); |
|
|
} else { |
|
|
Tcl_DStringAppend(&ds, "\n invoked from within\n\"", -1); |
|
|
} |
|
|
for (i = 0; i < objc; i++) { |
|
|
bytes = Tcl_GetStringFromObj(objv[i], &length); |
|
|
Tcl_DStringAppend(&ds, bytes, length); |
|
|
if (i < (objc - 1)) { |
|
|
Tcl_DStringAppend(&ds, " ", -1); |
|
|
} else if (Tcl_DStringLength(&ds) > 100) { |
|
|
Tcl_DStringSetLength(&ds, 100); |
|
|
Tcl_DStringAppend(&ds, "...", -1); |
|
|
break; |
|
|
} |
|
|
} |
|
|
|
|
|
Tcl_DStringAppend(&ds, "\"", -1); |
|
|
Tcl_AddObjErrorInfo(interp, Tcl_DStringValue(&ds), -1); |
|
|
Tcl_DStringFree(&ds); |
|
|
iPtr->flags &= ~ERR_ALREADY_LOGGED; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Free any locally allocated storage used to call "unknown". |
|
|
*/ |
|
|
|
|
|
if (localObjv != (Tcl_Obj **) NULL) { |
|
|
Tcl_DecrRefCount(localObjv[0]); |
|
|
ckfree((char *) localObjv); |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_ExprString -- |
|
|
* |
|
|
* Evaluate an expression in a string and return its value in string |
|
|
* form. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result. If the result is TCL_OK, then the interp's |
|
|
* result is set to the string value of the expression. If the result |
|
|
* is TCL_ERROR, then the interp's result contains an error message. |
|
|
* |
|
|
* Side effects: |
|
|
* A Tcl object is allocated to hold a copy of the expression string. |
|
|
* This expression object is passed to Tcl_ExprObj and then |
|
|
* deallocated. |
|
|
* |
|
|
*--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_ExprString(interp, string) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
char *string; /* Expression to evaluate. */ |
|
|
{ |
|
|
register Tcl_Obj *exprPtr; |
|
|
Tcl_Obj *resultPtr; |
|
|
int length = strlen(string); |
|
|
char buf[TCL_DOUBLE_SPACE]; |
|
|
int result = TCL_OK; |
|
|
|
|
|
if (length > 0) { |
|
|
TclNewObj(exprPtr); |
|
|
TclInitStringRep(exprPtr, string, length); |
|
|
Tcl_IncrRefCount(exprPtr); |
|
|
|
|
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
|
|
if (result == TCL_OK) { |
|
|
/* |
|
|
* Set the interpreter's string result from the result object. |
|
|
*/ |
|
|
|
|
|
if (resultPtr->typePtr == &tclIntType) { |
|
|
sprintf(buf, "%ld", resultPtr->internalRep.longValue); |
|
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
|
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
|
|
Tcl_PrintDouble((Tcl_Interp *) NULL, |
|
|
resultPtr->internalRep.doubleValue, buf); |
|
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
|
|
} else { |
|
|
/* |
|
|
* Set interpreter's string result from the result object. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, TclGetString(resultPtr), |
|
|
TCL_VOLATILE); |
|
|
} |
|
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
|
|
} else { |
|
|
/* |
|
|
* Move the interpreter's object result to the string result, |
|
|
* then reset the object result. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
|
|
TCL_VOLATILE); |
|
|
} |
|
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
|
|
} else { |
|
|
/* |
|
|
* An empty string. Just set the interpreter's result to 0. |
|
|
*/ |
|
|
|
|
|
Tcl_SetResult(interp, "0", TCL_VOLATILE); |
|
|
} |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*-------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_ExprObj -- |
|
|
* |
|
|
* Evaluate an expression in a Tcl_Obj. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl object result. If the result is other than TCL_OK, |
|
|
* then the interpreter's result contains an error message. If the |
|
|
* result is TCL_OK, then a pointer to the expression's result value |
|
|
* object is stored in resultPtrPtr. In that case, the object's ref |
|
|
* count is incremented to reflect the reference returned to the |
|
|
* caller; the caller is then responsible for the resulting object |
|
|
* and must, for example, decrement the ref count when it is finished |
|
|
* with the object. |
|
|
* |
|
|
* Side effects: |
|
|
* Any side effects caused by subcommands in the expression, if any. |
|
|
* The interpreter result is not modified unless there is an error. |
|
|
* |
|
|
*-------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_ExprObj(interp, objPtr, resultPtrPtr) |
|
|
Tcl_Interp *interp; /* Context in which to evaluate the |
|
|
* expression. */ |
|
|
register Tcl_Obj *objPtr; /* Points to Tcl object containing |
|
|
* expression to evaluate. */ |
|
|
Tcl_Obj **resultPtrPtr; /* Where the Tcl_Obj* that is the expression |
|
|
* result is stored if no errors occur. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
CompileEnv compEnv; /* Compilation environment structure |
|
|
* allocated in frame. */ |
|
|
LiteralTable *localTablePtr = &(compEnv.localLitTable); |
|
|
register ByteCode *codePtr = NULL; |
|
|
/* Tcl Internal type of bytecode. |
|
|
* Initialized to avoid compiler warning. */ |
|
|
AuxData *auxDataPtr; |
|
|
LiteralEntry *entryPtr; |
|
|
Tcl_Obj *saveObjPtr; |
|
|
char *string; |
|
|
int length, i, result; |
|
|
|
|
|
/* |
|
|
* First handle some common expressions specially. |
|
|
*/ |
|
|
|
|
|
string = Tcl_GetStringFromObj(objPtr, &length); |
|
|
if (length == 1) { |
|
|
if (*string == '0') { |
|
|
*resultPtrPtr = Tcl_NewLongObj(0); |
|
|
Tcl_IncrRefCount(*resultPtrPtr); |
|
|
return TCL_OK; |
|
|
} else if (*string == '1') { |
|
|
*resultPtrPtr = Tcl_NewLongObj(1); |
|
|
Tcl_IncrRefCount(*resultPtrPtr); |
|
|
return TCL_OK; |
|
|
} |
|
|
} else if ((length == 2) && (*string == '!')) { |
|
|
if (*(string+1) == '0') { |
|
|
*resultPtrPtr = Tcl_NewLongObj(1); |
|
|
Tcl_IncrRefCount(*resultPtrPtr); |
|
|
return TCL_OK; |
|
|
} else if (*(string+1) == '1') { |
|
|
*resultPtrPtr = Tcl_NewLongObj(0); |
|
|
Tcl_IncrRefCount(*resultPtrPtr); |
|
|
return TCL_OK; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* Get the ByteCode from the object. If it exists, make sure it hasn't |
|
|
* been invalidated by, e.g., someone redefining a command with a |
|
|
* compile procedure (this might make the compiled code wrong). If |
|
|
* necessary, convert the object to be a ByteCode object and compile it. |
|
|
* Also, if the code was compiled in/for a different interpreter, we |
|
|
* recompile it. |
|
|
* |
|
|
* Precompiled expressions, however, are immutable and therefore |
|
|
* they are not recompiled, even if the epoch has changed. |
|
|
* |
|
|
*/ |
|
|
|
|
|
if (objPtr->typePtr == &tclByteCodeType) { |
|
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
|
|
if (((Interp *) *codePtr->interpHandle != iPtr) |
|
|
|| (codePtr->compileEpoch != iPtr->compileEpoch)) { |
|
|
if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) { |
|
|
if ((Interp *) *codePtr->interpHandle != iPtr) { |
|
|
panic("Tcl_ExprObj: compiled expression jumped interps"); |
|
|
} |
|
|
codePtr->compileEpoch = iPtr->compileEpoch; |
|
|
} else { |
|
|
(*tclByteCodeType.freeIntRepProc)(objPtr); |
|
|
objPtr->typePtr = (Tcl_ObjType *) NULL; |
|
|
} |
|
|
} |
|
|
} |
|
|
if (objPtr->typePtr != &tclByteCodeType) { |
|
|
TclInitCompileEnv(interp, &compEnv, string, length); |
|
|
result = TclCompileExpr(interp, string, length, &compEnv); |
|
|
|
|
|
/* |
|
|
* Free the compilation environment's literal table bucket array if |
|
|
* it was dynamically allocated. |
|
|
*/ |
|
|
|
|
|
if (localTablePtr->buckets != localTablePtr->staticBuckets) { |
|
|
ckfree((char *) localTablePtr->buckets); |
|
|
} |
|
|
|
|
|
if (result != TCL_OK) { |
|
|
/* |
|
|
* Compilation errors. Free storage allocated for compilation. |
|
|
*/ |
|
|
|
|
|
#ifdef TCL_COMPILE_DEBUG |
|
|
TclVerifyLocalLiteralTable(&compEnv); |
|
|
#endif /*TCL_COMPILE_DEBUG*/ |
|
|
entryPtr = compEnv.literalArrayPtr; |
|
|
for (i = 0; i < compEnv.literalArrayNext; i++) { |
|
|
TclReleaseLiteral(interp, entryPtr->objPtr); |
|
|
entryPtr++; |
|
|
} |
|
|
#ifdef TCL_COMPILE_DEBUG |
|
|
TclVerifyGlobalLiteralTable(iPtr); |
|
|
#endif /*TCL_COMPILE_DEBUG*/ |
|
|
|
|
|
auxDataPtr = compEnv.auxDataArrayPtr; |
|
|
for (i = 0; i < compEnv.auxDataArrayNext; i++) { |
|
|
if (auxDataPtr->type->freeProc != NULL) { |
|
|
auxDataPtr->type->freeProc(auxDataPtr->clientData); |
|
|
} |
|
|
auxDataPtr++; |
|
|
} |
|
|
TclFreeCompileEnv(&compEnv); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
* Successful compilation. If the expression yielded no |
|
|
* instructions, push an zero object as the expression's result. |
|
|
*/ |
|
|
|
|
|
if (compEnv.codeNext == compEnv.codeStart) { |
|
|
TclEmitPush(TclRegisterLiteral(&compEnv, "0", 1, /*onHeap*/ 0), |
|
|
&compEnv); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Add a "done" instruction as the last instruction and change the |
|
|
* object into a ByteCode object. Ownership of the literal objects |
|
|
* and aux data items is given to the ByteCode object. |
|
|
*/ |
|
|
|
|
|
compEnv.numSrcBytes = iPtr->termOffset; |
|
|
TclEmitOpcode(INST_DONE, &compEnv); |
|
|
TclInitByteCodeObj(objPtr, &compEnv); |
|
|
TclFreeCompileEnv(&compEnv); |
|
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
|
|
#ifdef TCL_COMPILE_DEBUG |
|
|
if (tclTraceCompile == 2) { |
|
|
TclPrintByteCodeObj(interp, objPtr); |
|
|
} |
|
|
#endif /* TCL_COMPILE_DEBUG */ |
|
|
} |
|
|
|
|
|
/* |
|
|
* Execute the expression after first saving the interpreter's result. |
|
|
*/ |
|
|
|
|
|
saveObjPtr = Tcl_GetObjResult(interp); |
|
|
Tcl_IncrRefCount(saveObjPtr); |
|
|
Tcl_ResetResult(interp); |
|
|
|
|
|
/* |
|
|
* Increment the code's ref count while it is being executed. If |
|
|
* afterwards no references to it remain, free the code. |
|
|
*/ |
|
|
|
|
|
codePtr->refCount++; |
|
|
result = TclExecuteByteCode(interp, codePtr); |
|
|
codePtr->refCount--; |
|
|
if (codePtr->refCount <= 0) { |
|
|
TclCleanupByteCode(codePtr); |
|
|
objPtr->typePtr = NULL; |
|
|
objPtr->internalRep.otherValuePtr = NULL; |
|
|
} |
|
|
|
|
|
/* |
|
|
* If the expression evaluated successfully, store a pointer to its |
|
|
* value object in resultPtrPtr then restore the old interpreter result. |
|
|
* We increment the object's ref count to reflect the reference that we |
|
|
* are returning to the caller. We also decrement the ref count of the |
|
|
* interpreter's result object after calling Tcl_SetResult since we |
|
|
* next store into that field directly. |
|
|
*/ |
|
|
|
|
|
if (result == TCL_OK) { |
|
|
*resultPtrPtr = iPtr->objResultPtr; |
|
|
Tcl_IncrRefCount(iPtr->objResultPtr); |
|
|
|
|
|
Tcl_SetObjResult(interp, saveObjPtr); |
|
|
} |
|
|
Tcl_DecrRefCount(saveObjPtr); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_CreateTrace -- |
|
|
* |
|
|
* Arrange for a procedure to be called to trace command execution. |
|
|
* |
|
|
* Results: |
|
|
* The return value is a token for the trace, which may be passed |
|
|
* to Tcl_DeleteTrace to eliminate the trace. |
|
|
* |
|
|
* Side effects: |
|
|
* From now on, proc will be called just before a command procedure |
|
|
* is called to execute a Tcl command. Calls to proc will have the |
|
|
* following form: |
|
|
* |
|
|
* void |
|
|
* proc(clientData, interp, level, command, cmdProc, cmdClientData, |
|
|
* argc, argv) |
|
|
* ClientData clientData; |
|
|
* Tcl_Interp *interp; |
|
|
* int level; |
|
|
* char *command; |
|
|
* int (*cmdProc)(); |
|
|
* ClientData cmdClientData; |
|
|
* int argc; |
|
|
* char **argv; |
|
|
* { |
|
|
* } |
|
|
* |
|
|
* The clientData and interp arguments to proc will be the same |
|
|
* as the corresponding arguments to this procedure. Level gives |
|
|
* the nesting level of command interpretation for this interpreter |
|
|
* (0 corresponds to top level). Command gives the ASCII text of |
|
|
* the raw command, cmdProc and cmdClientData give the procedure that |
|
|
* will be called to process the command and the ClientData value it |
|
|
* will receive, and argc and argv give the arguments to the |
|
|
* command, after any argument parsing and substitution. Proc |
|
|
* does not return a value. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
Tcl_Trace |
|
|
Tcl_CreateTrace(interp, level, proc, clientData) |
|
|
Tcl_Interp *interp; /* Interpreter in which to create trace. */ |
|
|
int level; /* Only call proc for commands at nesting |
|
|
* level<=argument level (1=>top level). */ |
|
|
Tcl_CmdTraceProc *proc; /* Procedure to call before executing each |
|
|
* command. */ |
|
|
ClientData clientData; /* Arbitrary value word to pass to proc. */ |
|
|
{ |
|
|
register Trace *tracePtr; |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
|
|
|
/* |
|
|
* Invalidate existing compiled code for this interpreter and arrange |
|
|
* (by setting the DONT_COMPILE_CMDS_INLINE flag) that when compiling |
|
|
* new code, no commands will be compiled inline (i.e., into an inline |
|
|
* sequence of instructions). We do this because commands that were |
|
|
* compiled inline will never result in a command trace being called. |
|
|
*/ |
|
|
|
|
|
iPtr->compileEpoch++; |
|
|
iPtr->flags |= DONT_COMPILE_CMDS_INLINE; |
|
|
|
|
|
tracePtr = (Trace *) ckalloc(sizeof(Trace)); |
|
|
tracePtr->level = level; |
|
|
tracePtr->proc = proc; |
|
|
tracePtr->clientData = clientData; |
|
|
tracePtr->nextPtr = iPtr->tracePtr; |
|
|
iPtr->tracePtr = tracePtr; |
|
|
|
|
|
return (Tcl_Trace) tracePtr; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_DeleteTrace -- |
|
|
* |
|
|
* Remove a trace. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* From now on there will be no more calls to the procedure given |
|
|
* in trace. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_DeleteTrace(interp, trace) |
|
|
Tcl_Interp *interp; /* Interpreter that contains trace. */ |
|
|
Tcl_Trace trace; /* Token for trace (returned previously by |
|
|
* Tcl_CreateTrace). */ |
|
|
{ |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
register Trace *tracePtr = (Trace *) trace; |
|
|
register Trace *tracePtr2; |
|
|
|
|
|
if (iPtr->tracePtr == tracePtr) { |
|
|
iPtr->tracePtr = tracePtr->nextPtr; |
|
|
ckfree((char *) tracePtr); |
|
|
} else { |
|
|
for (tracePtr2 = iPtr->tracePtr; tracePtr2 != NULL; |
|
|
tracePtr2 = tracePtr2->nextPtr) { |
|
|
if (tracePtr2->nextPtr == tracePtr) { |
|
|
tracePtr2->nextPtr = tracePtr->nextPtr; |
|
|
ckfree((char *) tracePtr); |
|
|
break; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
if (iPtr->tracePtr == NULL) { |
|
|
/* |
|
|
* When compiling new code, allow commands to be compiled inline. |
|
|
*/ |
|
|
|
|
|
iPtr->flags &= ~DONT_COMPILE_CMDS_INLINE; |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_AddErrorInfo -- |
|
|
* |
|
|
* Add information to the "errorInfo" variable that describes the |
|
|
* current error. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The contents of message are added to the "errorInfo" variable. |
|
|
* If Tcl_Eval has been called since the current value of errorInfo |
|
|
* was set, errorInfo is cleared before adding the new message. |
|
|
* If we are just starting to log an error, errorInfo is initialized |
|
|
* from the error message in the interpreter's result. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_AddErrorInfo(interp, message) |
|
|
Tcl_Interp *interp; /* Interpreter to which error information |
|
|
* pertains. */ |
|
|
CONST char *message; /* Message to record. */ |
|
|
{ |
|
|
Tcl_AddObjErrorInfo(interp, message, -1); |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_AddObjErrorInfo -- |
|
|
* |
|
|
* Add information to the "errorInfo" variable that describes the |
|
|
* current error. This routine differs from Tcl_AddErrorInfo by |
|
|
* taking a byte pointer and length. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* "length" bytes from "message" are added to the "errorInfo" variable. |
|
|
* If "length" is negative, use bytes up to the first NULL byte. |
|
|
* If Tcl_EvalObj has been called since the current value of errorInfo |
|
|
* was set, errorInfo is cleared before adding the new message. |
|
|
* If we are just starting to log an error, errorInfo is initialized |
|
|
* from the error message in the interpreter's result. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_AddObjErrorInfo(interp, message, length) |
|
|
Tcl_Interp *interp; /* Interpreter to which error information |
|
|
* pertains. */ |
|
|
CONST char *message; /* Points to the first byte of an array of |
|
|
* bytes of the message. */ |
|
|
int length; /* The number of bytes in the message. |
|
|
* If < 0, then append all bytes up to a |
|
|
* NULL byte. */ |
|
|
{ |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
Tcl_Obj *messagePtr; |
|
|
|
|
|
/* |
|
|
* If we are just starting to log an error, errorInfo is initialized |
|
|
* from the error message in the interpreter's result. |
|
|
*/ |
|
|
|
|
|
if (!(iPtr->flags & ERR_IN_PROGRESS)) { /* just starting to log error */ |
|
|
iPtr->flags |= ERR_IN_PROGRESS; |
|
|
|
|
|
if (iPtr->result[0] == 0) { |
|
|
(void) Tcl_SetVar2Ex(interp, "errorInfo", NULL, iPtr->objResultPtr, |
|
|
TCL_GLOBAL_ONLY); |
|
|
} else { /* use the string result */ |
|
|
Tcl_SetVar2(interp, "errorInfo", (char *) NULL, interp->result, |
|
|
TCL_GLOBAL_ONLY); |
|
|
} |
|
|
|
|
|
/* |
|
|
* If the errorCode variable wasn't set by the code that generated |
|
|
* the error, set it to "NONE". |
|
|
*/ |
|
|
|
|
|
if (!(iPtr->flags & ERROR_CODE_SET)) { |
|
|
(void) Tcl_SetVar2(interp, "errorCode", (char *) NULL, "NONE", |
|
|
TCL_GLOBAL_ONLY); |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
* Now append "message" to the end of errorInfo. |
|
|
*/ |
|
|
|
|
|
if (length != 0) { |
|
|
messagePtr = Tcl_NewStringObj(message, length); |
|
|
Tcl_IncrRefCount(messagePtr); |
|
|
Tcl_SetVar2Ex(interp, "errorInfo", NULL, messagePtr, |
|
|
(TCL_GLOBAL_ONLY | TCL_APPEND_VALUE)); |
|
|
Tcl_DecrRefCount(messagePtr); /* free msg object appended above */ |
|
|
} |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_VarEvalVA -- |
|
|
* |
|
|
* Given a variable number of string arguments, concatenate them |
|
|
* all together and execute the result as a Tcl command. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl return result. An error message or other result may |
|
|
* be left in the interp's result. |
|
|
* |
|
|
* Side effects: |
|
|
* Depends on what was done by the command. |
|
|
* |
|
|
*--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_VarEvalVA (interp, argList) |
|
|
Tcl_Interp *interp; /* Interpreter in which to evaluate command. */ |
|
|
va_list argList; /* Variable argument list. */ |
|
|
{ |
|
|
Tcl_DString buf; |
|
|
char *string; |
|
|
int result; |
|
|
|
|
|
/* |
|
|
* Copy the strings one after the other into a single larger |
|
|
* string. Use stack-allocated space for small commands, but if |
|
|
* the command gets too large than call ckalloc to create the |
|
|
* space. |
|
|
*/ |
|
|
|
|
|
Tcl_DStringInit(&buf); |
|
|
while (1) { |
|
|
string = va_arg(argList, char *); |
|
|
if (string == NULL) { |
|
|
break; |
|
|
} |
|
|
Tcl_DStringAppend(&buf, string, -1); |
|
|
} |
|
|
|
|
|
result = Tcl_Eval(interp, Tcl_DStringValue(&buf)); |
|
|
Tcl_DStringFree(&buf); |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_VarEval -- |
|
|
* |
|
|
* Given a variable number of string arguments, concatenate them |
|
|
* all together and execute the result as a Tcl command. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl return result. An error message or other |
|
|
* result may be left in interp->result. |
|
|
* |
|
|
* Side effects: |
|
|
* Depends on what was done by the command. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
/* VARARGS2 */ /* ARGSUSED */ |
|
|
int |
|
|
Tcl_VarEval TCL_VARARGS_DEF(Tcl_Interp *,arg1) |
|
|
{ |
|
|
Tcl_Interp *interp; |
|
|
va_list argList; |
|
|
int result; |
|
|
|
|
|
interp = TCL_VARARGS_START(Tcl_Interp *,arg1,argList); |
|
|
result = Tcl_VarEvalVA(interp, argList); |
|
|
va_end(argList); |
|
|
|
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*--------------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GlobalEval -- |
|
|
* |
|
|
* Evaluate a command at global level in an interpreter. |
|
|
* |
|
|
* Results: |
|
|
* A standard Tcl result is returned, and the interp's result is |
|
|
* modified accordingly. |
|
|
* |
|
|
* Side effects: |
|
|
* The command string is executed in interp, and the execution |
|
|
* is carried out in the variable context of global level (no |
|
|
* procedures active), just as if an "uplevel #0" command were |
|
|
* being executed. |
|
|
* |
|
|
--------------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_GlobalEval(interp, command) |
|
|
Tcl_Interp *interp; /* Interpreter in which to evaluate command. */ |
|
|
char *command; /* Command to evaluate. */ |
|
|
{ |
|
|
register Interp *iPtr = (Interp *) interp; |
|
|
int result; |
|
|
CallFrame *savedVarFramePtr; |
|
|
|
|
|
savedVarFramePtr = iPtr->varFramePtr; |
|
|
iPtr->varFramePtr = NULL; |
|
|
result = Tcl_Eval(interp, command); |
|
|
iPtr->varFramePtr = savedVarFramePtr; |
|
|
return result; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_SetRecursionLimit -- |
|
|
* |
|
|
* Set the maximum number of recursive calls that may be active |
|
|
* for an interpreter at once. |
|
|
* |
|
|
* Results: |
|
|
* The return value is the old limit on nesting for interp. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
int |
|
|
Tcl_SetRecursionLimit(interp, depth) |
|
|
Tcl_Interp *interp; /* Interpreter whose nesting limit |
|
|
* is to be set. */ |
|
|
int depth; /* New value for maximimum depth. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
int old; |
|
|
|
|
|
old = iPtr->maxNestingDepth; |
|
|
if (depth > 0) { |
|
|
iPtr->maxNestingDepth = depth; |
|
|
} |
|
|
return old; |
|
|
} |
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_AllowExceptions -- |
|
|
* |
|
|
* Sets a flag in an interpreter so that exceptions can occur |
|
|
* in the next call to Tcl_Eval without them being turned into |
|
|
* errors. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* The TCL_ALLOW_EXCEPTIONS flag gets set in the interpreter's |
|
|
* evalFlags structure. See the reference documentation for |
|
|
* more details. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void |
|
|
Tcl_AllowExceptions(interp) |
|
|
Tcl_Interp *interp; /* Interpreter in which to set flag. */ |
|
|
{ |
|
|
Interp *iPtr = (Interp *) interp; |
|
|
|
|
|
iPtr->evalFlags |= TCL_ALLOW_EXCEPTIONS; |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
|
*---------------------------------------------------------------------- |
|
|
* |
|
|
* Tcl_GetVersion |
|
|
* |
|
|
* Get the Tcl major, minor, and patchlevel version numbers and |
|
|
* the release type. A patch is a release type TCL_FINAL_RELEASE |
|
|
* with a patchLevel > 0. |
|
|
* |
|
|
* Results: |
|
|
* None. |
|
|
* |
|
|
* Side effects: |
|
|
* None. |
|
|
* |
|
|
*---------------------------------------------------------------------- |
|
|
*/ |
|
|
|
|
|
void Tcl_GetVersion(majorV, minorV, patchLevelV, type) |
|
|
int *majorV; |
|
|
int *minorV; |
|
|
int *patchLevelV; |
|
|
int *type; |
|
|
{ |
|
|
if (majorV != NULL) { |
|
|
*majorV = TCL_MAJOR_VERSION; |
|
|
} |
|
|
if (minorV != NULL) { |
|
|
*minorV = TCL_MINOR_VERSION; |
|
|
} |
|
|
if (patchLevelV != NULL) { |
|
|
*patchLevelV = TCL_RELEASE_SERIAL; |
|
|
} |
|
|
if (type != NULL) { |
|
|
*type = TCL_RELEASE_LEVEL; |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
/* $History: tclbasic.c $ |
|
|
* |
|
|
* ***************** Version 1 ***************** |
|
|
* User: Dtashley Date: 1/02/01 Time: 1:34a |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tcl Base |
|
|
* Initial check-in. |
|
|
*/ |
|
|
|
|
|
/* End of TCLBASIC.C */ |
|
| 1 |
|
/* $Header$ */ |
| 2 |
|
/* |
| 3 |
|
* tclBasic.c -- |
| 4 |
|
* |
| 5 |
|
* Contains the basic facilities for TCL command interpretation, |
| 6 |
|
* including interpreter creation and deletion, command creation |
| 7 |
|
* and deletion, and command parsing and execution. |
| 8 |
|
* |
| 9 |
|
* Copyright (c) 1987-1994 The Regents of the University of California. |
| 10 |
|
* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
| 11 |
|
* Copyright (c) 1998-1999 by Scriptics Corporation. |
| 12 |
|
* |
| 13 |
|
* See the file "license.terms" for information on usage and redistribution |
| 14 |
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
| 15 |
|
* |
| 16 |
|
* RCS: @(#) $Id: tclbasic.c,v 1.1.1.1 2001/06/13 04:33:43 dtashley Exp $ |
| 17 |
|
*/ |
| 18 |
|
|
| 19 |
|
#include "tclInt.h" |
| 20 |
|
#include "tclCompile.h" |
| 21 |
|
#ifndef TCL_GENERIC_ONLY |
| 22 |
|
# include "tclPort.h" |
| 23 |
|
#endif |
| 24 |
|
|
| 25 |
|
/* |
| 26 |
|
* Static procedures in this file: |
| 27 |
|
*/ |
| 28 |
|
|
| 29 |
|
static void DeleteInterpProc _ANSI_ARGS_((Tcl_Interp *interp)); |
| 30 |
|
static void ProcessUnexpectedResult _ANSI_ARGS_(( |
| 31 |
|
Tcl_Interp *interp, int returnCode)); |
| 32 |
|
static void RecordTracebackInfo _ANSI_ARGS_(( |
| 33 |
|
Tcl_Interp *interp, Tcl_Obj *objPtr, |
| 34 |
|
int numSrcBytes)); |
| 35 |
|
|
| 36 |
|
extern TclStubs tclStubs; |
| 37 |
|
|
| 38 |
|
/* |
| 39 |
|
* The following structure defines the commands in the Tcl core. |
| 40 |
|
*/ |
| 41 |
|
|
| 42 |
|
typedef struct { |
| 43 |
|
char *name; /* Name of object-based command. */ |
| 44 |
|
Tcl_CmdProc *proc; /* String-based procedure for command. */ |
| 45 |
|
Tcl_ObjCmdProc *objProc; /* Object-based procedure for command. */ |
| 46 |
|
CompileProc *compileProc; /* Procedure called to compile command. */ |
| 47 |
|
int isSafe; /* If non-zero, command will be present |
| 48 |
|
* in safe interpreter. Otherwise it will |
| 49 |
|
* be hidden. */ |
| 50 |
|
} CmdInfo; |
| 51 |
|
|
| 52 |
|
/* |
| 53 |
|
* The built-in commands, and the procedures that implement them: |
| 54 |
|
*/ |
| 55 |
|
|
| 56 |
|
static CmdInfo builtInCmds[] = { |
| 57 |
|
/* |
| 58 |
|
* Commands in the generic core. Note that at least one of the proc or |
| 59 |
|
* objProc members should be non-NULL. This avoids infinitely recursive |
| 60 |
|
* calls between TclInvokeObjectCommand and TclInvokeStringCommand if a |
| 61 |
|
* command name is computed at runtime and results in the name of a |
| 62 |
|
* compiled command. |
| 63 |
|
*/ |
| 64 |
|
|
| 65 |
|
{"append", (Tcl_CmdProc *) NULL, Tcl_AppendObjCmd, |
| 66 |
|
(CompileProc *) NULL, 1}, |
| 67 |
|
{"array", (Tcl_CmdProc *) NULL, Tcl_ArrayObjCmd, |
| 68 |
|
(CompileProc *) NULL, 1}, |
| 69 |
|
{"binary", (Tcl_CmdProc *) NULL, Tcl_BinaryObjCmd, |
| 70 |
|
(CompileProc *) NULL, 1}, |
| 71 |
|
{"break", (Tcl_CmdProc *) NULL, Tcl_BreakObjCmd, |
| 72 |
|
TclCompileBreakCmd, 1}, |
| 73 |
|
{"case", (Tcl_CmdProc *) NULL, Tcl_CaseObjCmd, |
| 74 |
|
(CompileProc *) NULL, 1}, |
| 75 |
|
{"catch", (Tcl_CmdProc *) NULL, Tcl_CatchObjCmd, |
| 76 |
|
TclCompileCatchCmd, 1}, |
| 77 |
|
{"clock", (Tcl_CmdProc *) NULL, Tcl_ClockObjCmd, |
| 78 |
|
(CompileProc *) NULL, 1}, |
| 79 |
|
{"concat", (Tcl_CmdProc *) NULL, Tcl_ConcatObjCmd, |
| 80 |
|
(CompileProc *) NULL, 1}, |
| 81 |
|
{"continue", (Tcl_CmdProc *) NULL, Tcl_ContinueObjCmd, |
| 82 |
|
TclCompileContinueCmd, 1}, |
| 83 |
|
{"encoding", (Tcl_CmdProc *) NULL, Tcl_EncodingObjCmd, |
| 84 |
|
(CompileProc *) NULL, 0}, |
| 85 |
|
{"error", (Tcl_CmdProc *) NULL, Tcl_ErrorObjCmd, |
| 86 |
|
(CompileProc *) NULL, 1}, |
| 87 |
|
{"eval", (Tcl_CmdProc *) NULL, Tcl_EvalObjCmd, |
| 88 |
|
(CompileProc *) NULL, 1}, |
| 89 |
|
{"exit", (Tcl_CmdProc *) NULL, Tcl_ExitObjCmd, |
| 90 |
|
(CompileProc *) NULL, 0}, |
| 91 |
|
{"expr", (Tcl_CmdProc *) NULL, Tcl_ExprObjCmd, |
| 92 |
|
TclCompileExprCmd, 1}, |
| 93 |
|
{"fcopy", (Tcl_CmdProc *) NULL, Tcl_FcopyObjCmd, |
| 94 |
|
(CompileProc *) NULL, 1}, |
| 95 |
|
{"fileevent", (Tcl_CmdProc *) NULL, Tcl_FileEventObjCmd, |
| 96 |
|
(CompileProc *) NULL, 1}, |
| 97 |
|
{"for", (Tcl_CmdProc *) NULL, Tcl_ForObjCmd, |
| 98 |
|
TclCompileForCmd, 1}, |
| 99 |
|
{"foreach", (Tcl_CmdProc *) NULL, Tcl_ForeachObjCmd, |
| 100 |
|
TclCompileForeachCmd, 1}, |
| 101 |
|
{"format", (Tcl_CmdProc *) NULL, Tcl_FormatObjCmd, |
| 102 |
|
(CompileProc *) NULL, 1}, |
| 103 |
|
{"global", (Tcl_CmdProc *) NULL, Tcl_GlobalObjCmd, |
| 104 |
|
(CompileProc *) NULL, 1}, |
| 105 |
|
{"if", (Tcl_CmdProc *) NULL, Tcl_IfObjCmd, |
| 106 |
|
TclCompileIfCmd, 1}, |
| 107 |
|
{"incr", (Tcl_CmdProc *) NULL, Tcl_IncrObjCmd, |
| 108 |
|
TclCompileIncrCmd, 1}, |
| 109 |
|
{"info", (Tcl_CmdProc *) NULL, Tcl_InfoObjCmd, |
| 110 |
|
(CompileProc *) NULL, 1}, |
| 111 |
|
{"join", (Tcl_CmdProc *) NULL, Tcl_JoinObjCmd, |
| 112 |
|
(CompileProc *) NULL, 1}, |
| 113 |
|
{"lappend", (Tcl_CmdProc *) NULL, Tcl_LappendObjCmd, |
| 114 |
|
(CompileProc *) NULL, 1}, |
| 115 |
|
{"lindex", (Tcl_CmdProc *) NULL, Tcl_LindexObjCmd, |
| 116 |
|
(CompileProc *) NULL, 1}, |
| 117 |
|
{"linsert", (Tcl_CmdProc *) NULL, Tcl_LinsertObjCmd, |
| 118 |
|
(CompileProc *) NULL, 1}, |
| 119 |
|
{"list", (Tcl_CmdProc *) NULL, Tcl_ListObjCmd, |
| 120 |
|
(CompileProc *) NULL, 1}, |
| 121 |
|
{"llength", (Tcl_CmdProc *) NULL, Tcl_LlengthObjCmd, |
| 122 |
|
(CompileProc *) NULL, 1}, |
| 123 |
|
{"load", (Tcl_CmdProc *) NULL, Tcl_LoadObjCmd, |
| 124 |
|
(CompileProc *) NULL, 0}, |
| 125 |
|
{"lrange", (Tcl_CmdProc *) NULL, Tcl_LrangeObjCmd, |
| 126 |
|
(CompileProc *) NULL, 1}, |
| 127 |
|
{"lreplace", (Tcl_CmdProc *) NULL, Tcl_LreplaceObjCmd, |
| 128 |
|
(CompileProc *) NULL, 1}, |
| 129 |
|
{"lsearch", (Tcl_CmdProc *) NULL, Tcl_LsearchObjCmd, |
| 130 |
|
(CompileProc *) NULL, 1}, |
| 131 |
|
{"lsort", (Tcl_CmdProc *) NULL, Tcl_LsortObjCmd, |
| 132 |
|
(CompileProc *) NULL, 1}, |
| 133 |
|
{"namespace", (Tcl_CmdProc *) NULL, Tcl_NamespaceObjCmd, |
| 134 |
|
(CompileProc *) NULL, 1}, |
| 135 |
|
{"package", (Tcl_CmdProc *) NULL, Tcl_PackageObjCmd, |
| 136 |
|
(CompileProc *) NULL, 1}, |
| 137 |
|
{"proc", (Tcl_CmdProc *) NULL, Tcl_ProcObjCmd, |
| 138 |
|
(CompileProc *) NULL, 1}, |
| 139 |
|
{"regexp", (Tcl_CmdProc *) NULL, Tcl_RegexpObjCmd, |
| 140 |
|
(CompileProc *) NULL, 1}, |
| 141 |
|
{"regsub", (Tcl_CmdProc *) NULL, Tcl_RegsubObjCmd, |
| 142 |
|
(CompileProc *) NULL, 1}, |
| 143 |
|
{"rename", (Tcl_CmdProc *) NULL, Tcl_RenameObjCmd, |
| 144 |
|
(CompileProc *) NULL, 1}, |
| 145 |
|
{"return", (Tcl_CmdProc *) NULL, Tcl_ReturnObjCmd, |
| 146 |
|
(CompileProc *) NULL, 1}, |
| 147 |
|
{"scan", (Tcl_CmdProc *) NULL, Tcl_ScanObjCmd, |
| 148 |
|
(CompileProc *) NULL, 1}, |
| 149 |
|
{"set", (Tcl_CmdProc *) NULL, Tcl_SetObjCmd, |
| 150 |
|
TclCompileSetCmd, 1}, |
| 151 |
|
{"split", (Tcl_CmdProc *) NULL, Tcl_SplitObjCmd, |
| 152 |
|
(CompileProc *) NULL, 1}, |
| 153 |
|
{"string", (Tcl_CmdProc *) NULL, Tcl_StringObjCmd, |
| 154 |
|
(CompileProc *) NULL, 1}, |
| 155 |
|
{"subst", (Tcl_CmdProc *) NULL, Tcl_SubstObjCmd, |
| 156 |
|
(CompileProc *) NULL, 1}, |
| 157 |
|
{"switch", (Tcl_CmdProc *) NULL, Tcl_SwitchObjCmd, |
| 158 |
|
(CompileProc *) NULL, 1}, |
| 159 |
|
{"trace", (Tcl_CmdProc *) NULL, Tcl_TraceObjCmd, |
| 160 |
|
(CompileProc *) NULL, 1}, |
| 161 |
|
{"unset", (Tcl_CmdProc *) NULL, Tcl_UnsetObjCmd, |
| 162 |
|
(CompileProc *) NULL, 1}, |
| 163 |
|
{"uplevel", (Tcl_CmdProc *) NULL, Tcl_UplevelObjCmd, |
| 164 |
|
(CompileProc *) NULL, 1}, |
| 165 |
|
{"upvar", (Tcl_CmdProc *) NULL, Tcl_UpvarObjCmd, |
| 166 |
|
(CompileProc *) NULL, 1}, |
| 167 |
|
{"variable", (Tcl_CmdProc *) NULL, Tcl_VariableObjCmd, |
| 168 |
|
(CompileProc *) NULL, 1}, |
| 169 |
|
{"while", (Tcl_CmdProc *) NULL, Tcl_WhileObjCmd, |
| 170 |
|
TclCompileWhileCmd, 1}, |
| 171 |
|
|
| 172 |
|
/* |
| 173 |
|
* Commands in the UNIX core: |
| 174 |
|
*/ |
| 175 |
|
|
| 176 |
|
#ifndef TCL_GENERIC_ONLY |
| 177 |
|
{"after", (Tcl_CmdProc *) NULL, Tcl_AfterObjCmd, |
| 178 |
|
(CompileProc *) NULL, 1}, |
| 179 |
|
{"cd", (Tcl_CmdProc *) NULL, Tcl_CdObjCmd, |
| 180 |
|
(CompileProc *) NULL, 0}, |
| 181 |
|
{"close", (Tcl_CmdProc *) NULL, Tcl_CloseObjCmd, |
| 182 |
|
(CompileProc *) NULL, 1}, |
| 183 |
|
{"eof", (Tcl_CmdProc *) NULL, Tcl_EofObjCmd, |
| 184 |
|
(CompileProc *) NULL, 1}, |
| 185 |
|
{"fblocked", (Tcl_CmdProc *) NULL, Tcl_FblockedObjCmd, |
| 186 |
|
(CompileProc *) NULL, 1}, |
| 187 |
|
{"fconfigure", (Tcl_CmdProc *) NULL, Tcl_FconfigureObjCmd, |
| 188 |
|
(CompileProc *) NULL, 0}, |
| 189 |
|
{"file", (Tcl_CmdProc *) NULL, Tcl_FileObjCmd, |
| 190 |
|
(CompileProc *) NULL, 0}, |
| 191 |
|
{"flush", (Tcl_CmdProc *) NULL, Tcl_FlushObjCmd, |
| 192 |
|
(CompileProc *) NULL, 1}, |
| 193 |
|
{"gets", (Tcl_CmdProc *) NULL, Tcl_GetsObjCmd, |
| 194 |
|
(CompileProc *) NULL, 1}, |
| 195 |
|
{"glob", (Tcl_CmdProc *) NULL, Tcl_GlobObjCmd, |
| 196 |
|
(CompileProc *) NULL, 0}, |
| 197 |
|
{"open", (Tcl_CmdProc *) NULL, Tcl_OpenObjCmd, |
| 198 |
|
(CompileProc *) NULL, 0}, |
| 199 |
|
{"pid", (Tcl_CmdProc *) NULL, Tcl_PidObjCmd, |
| 200 |
|
(CompileProc *) NULL, 1}, |
| 201 |
|
{"puts", (Tcl_CmdProc *) NULL, Tcl_PutsObjCmd, |
| 202 |
|
(CompileProc *) NULL, 1}, |
| 203 |
|
{"pwd", (Tcl_CmdProc *) NULL, Tcl_PwdObjCmd, |
| 204 |
|
(CompileProc *) NULL, 0}, |
| 205 |
|
{"read", (Tcl_CmdProc *) NULL, Tcl_ReadObjCmd, |
| 206 |
|
(CompileProc *) NULL, 1}, |
| 207 |
|
{"seek", (Tcl_CmdProc *) NULL, Tcl_SeekObjCmd, |
| 208 |
|
(CompileProc *) NULL, 1}, |
| 209 |
|
{"socket", (Tcl_CmdProc *) NULL, Tcl_SocketObjCmd, |
| 210 |
|
(CompileProc *) NULL, 0}, |
| 211 |
|
{"tell", (Tcl_CmdProc *) NULL, Tcl_TellObjCmd, |
| 212 |
|
(CompileProc *) NULL, 1}, |
| 213 |
|
{"time", (Tcl_CmdProc *) NULL, Tcl_TimeObjCmd, |
| 214 |
|
(CompileProc *) NULL, 1}, |
| 215 |
|
{"update", (Tcl_CmdProc *) NULL, Tcl_UpdateObjCmd, |
| 216 |
|
(CompileProc *) NULL, 1}, |
| 217 |
|
{"vwait", (Tcl_CmdProc *) NULL, Tcl_VwaitObjCmd, |
| 218 |
|
(CompileProc *) NULL, 1}, |
| 219 |
|
|
| 220 |
|
#ifdef MAC_TCL |
| 221 |
|
{"beep", (Tcl_CmdProc *) NULL, Tcl_BeepObjCmd, |
| 222 |
|
(CompileProc *) NULL, 0}, |
| 223 |
|
{"echo", Tcl_EchoCmd, (Tcl_ObjCmdProc *) NULL, |
| 224 |
|
(CompileProc *) NULL, 0}, |
| 225 |
|
{"ls", (Tcl_CmdProc *) NULL, Tcl_LsObjCmd, |
| 226 |
|
(CompileProc *) NULL, 0}, |
| 227 |
|
{"resource", (Tcl_CmdProc *) NULL, Tcl_ResourceObjCmd, |
| 228 |
|
(CompileProc *) NULL, 1}, |
| 229 |
|
{"source", (Tcl_CmdProc *) NULL, Tcl_MacSourceObjCmd, |
| 230 |
|
(CompileProc *) NULL, 0}, |
| 231 |
|
#else |
| 232 |
|
{"exec", (Tcl_CmdProc *) NULL, Tcl_ExecObjCmd, |
| 233 |
|
(CompileProc *) NULL, 0}, |
| 234 |
|
{"source", (Tcl_CmdProc *) NULL, Tcl_SourceObjCmd, |
| 235 |
|
(CompileProc *) NULL, 0}, |
| 236 |
|
#endif /* MAC_TCL */ |
| 237 |
|
|
| 238 |
|
#endif /* TCL_GENERIC_ONLY */ |
| 239 |
|
{NULL, (Tcl_CmdProc *) NULL, (Tcl_ObjCmdProc *) NULL, |
| 240 |
|
(CompileProc *) NULL, 0} |
| 241 |
|
}; |
| 242 |
|
|
| 243 |
|
|
| 244 |
|
/* |
| 245 |
|
*---------------------------------------------------------------------- |
| 246 |
|
* |
| 247 |
|
* Tcl_CreateInterp -- |
| 248 |
|
* |
| 249 |
|
* Create a new TCL command interpreter. |
| 250 |
|
* |
| 251 |
|
* Results: |
| 252 |
|
* The return value is a token for the interpreter, which may be |
| 253 |
|
* used in calls to procedures like Tcl_CreateCmd, Tcl_Eval, or |
| 254 |
|
* Tcl_DeleteInterp. |
| 255 |
|
* |
| 256 |
|
* Side effects: |
| 257 |
|
* The command interpreter is initialized with an empty variable |
| 258 |
|
* table and the built-in commands. |
| 259 |
|
* |
| 260 |
|
*---------------------------------------------------------------------- |
| 261 |
|
*/ |
| 262 |
|
|
| 263 |
|
Tcl_Interp * |
| 264 |
|
Tcl_CreateInterp() |
| 265 |
|
{ |
| 266 |
|
Interp *iPtr; |
| 267 |
|
Tcl_Interp *interp; |
| 268 |
|
Command *cmdPtr; |
| 269 |
|
BuiltinFunc *builtinFuncPtr; |
| 270 |
|
MathFunc *mathFuncPtr; |
| 271 |
|
Tcl_HashEntry *hPtr; |
| 272 |
|
CmdInfo *cmdInfoPtr; |
| 273 |
|
int i; |
| 274 |
|
union { |
| 275 |
|
char c[sizeof(short)]; |
| 276 |
|
short s; |
| 277 |
|
} order; |
| 278 |
|
#ifdef TCL_COMPILE_STATS |
| 279 |
|
ByteCodeStats *statsPtr; |
| 280 |
|
#endif /* TCL_COMPILE_STATS */ |
| 281 |
|
|
| 282 |
|
TclInitSubsystems(NULL); |
| 283 |
|
|
| 284 |
|
/* |
| 285 |
|
* Panic if someone updated the CallFrame structure without |
| 286 |
|
* also updating the Tcl_CallFrame structure (or vice versa). |
| 287 |
|
*/ |
| 288 |
|
|
| 289 |
|
if (sizeof(Tcl_CallFrame) != sizeof(CallFrame)) { |
| 290 |
|
/*NOTREACHED*/ |
| 291 |
|
panic("Tcl_CallFrame and CallFrame are not the same size"); |
| 292 |
|
} |
| 293 |
|
|
| 294 |
|
/* |
| 295 |
|
* Initialize support for namespaces and create the global namespace |
| 296 |
|
* (whose name is ""; an alias is "::"). This also initializes the |
| 297 |
|
* Tcl object type table and other object management code. |
| 298 |
|
*/ |
| 299 |
|
|
| 300 |
|
iPtr = (Interp *) ckalloc(sizeof(Interp)); |
| 301 |
|
interp = (Tcl_Interp *) iPtr; |
| 302 |
|
|
| 303 |
|
iPtr->result = iPtr->resultSpace; |
| 304 |
|
iPtr->freeProc = NULL; |
| 305 |
|
iPtr->errorLine = 0; |
| 306 |
|
iPtr->objResultPtr = Tcl_NewObj(); |
| 307 |
|
Tcl_IncrRefCount(iPtr->objResultPtr); |
| 308 |
|
iPtr->handle = TclHandleCreate(iPtr); |
| 309 |
|
iPtr->globalNsPtr = NULL; |
| 310 |
|
iPtr->hiddenCmdTablePtr = NULL; |
| 311 |
|
iPtr->interpInfo = NULL; |
| 312 |
|
Tcl_InitHashTable(&iPtr->mathFuncTable, TCL_STRING_KEYS); |
| 313 |
|
|
| 314 |
|
iPtr->numLevels = 0; |
| 315 |
|
iPtr->maxNestingDepth = 1000; |
| 316 |
|
iPtr->framePtr = NULL; |
| 317 |
|
iPtr->varFramePtr = NULL; |
| 318 |
|
iPtr->activeTracePtr = NULL; |
| 319 |
|
iPtr->returnCode = TCL_OK; |
| 320 |
|
iPtr->errorInfo = NULL; |
| 321 |
|
iPtr->errorCode = NULL; |
| 322 |
|
|
| 323 |
|
iPtr->appendResult = NULL; |
| 324 |
|
iPtr->appendAvl = 0; |
| 325 |
|
iPtr->appendUsed = 0; |
| 326 |
|
|
| 327 |
|
Tcl_InitHashTable(&iPtr->packageTable, TCL_STRING_KEYS); |
| 328 |
|
iPtr->packageUnknown = NULL; |
| 329 |
|
iPtr->cmdCount = 0; |
| 330 |
|
iPtr->termOffset = 0; |
| 331 |
|
TclInitLiteralTable(&(iPtr->literalTable)); |
| 332 |
|
iPtr->compileEpoch = 0; |
| 333 |
|
iPtr->compiledProcPtr = NULL; |
| 334 |
|
iPtr->resolverPtr = NULL; |
| 335 |
|
iPtr->evalFlags = 0; |
| 336 |
|
iPtr->scriptFile = NULL; |
| 337 |
|
iPtr->flags = 0; |
| 338 |
|
iPtr->tracePtr = NULL; |
| 339 |
|
iPtr->assocData = (Tcl_HashTable *) NULL; |
| 340 |
|
iPtr->execEnvPtr = NULL; /* set after namespaces initialized */ |
| 341 |
|
iPtr->emptyObjPtr = Tcl_NewObj(); /* another empty object */ |
| 342 |
|
Tcl_IncrRefCount(iPtr->emptyObjPtr); |
| 343 |
|
iPtr->resultSpace[0] = 0; |
| 344 |
|
|
| 345 |
|
iPtr->globalNsPtr = NULL; /* force creation of global ns below */ |
| 346 |
|
iPtr->globalNsPtr = (Namespace *) Tcl_CreateNamespace(interp, "", |
| 347 |
|
(ClientData) NULL, (Tcl_NamespaceDeleteProc *) NULL); |
| 348 |
|
if (iPtr->globalNsPtr == NULL) { |
| 349 |
|
panic("Tcl_CreateInterp: can't create global namespace"); |
| 350 |
|
} |
| 351 |
|
|
| 352 |
|
/* |
| 353 |
|
* Initialize support for code compilation and execution. We call |
| 354 |
|
* TclCreateExecEnv after initializing namespaces since it tries to |
| 355 |
|
* reference a Tcl variable (it links to the Tcl "tcl_traceExec" |
| 356 |
|
* variable). |
| 357 |
|
*/ |
| 358 |
|
|
| 359 |
|
iPtr->execEnvPtr = TclCreateExecEnv(interp); |
| 360 |
|
|
| 361 |
|
/* |
| 362 |
|
* Initialize the compilation and execution statistics kept for this |
| 363 |
|
* interpreter. |
| 364 |
|
*/ |
| 365 |
|
|
| 366 |
|
#ifdef TCL_COMPILE_STATS |
| 367 |
|
statsPtr = &(iPtr->stats); |
| 368 |
|
statsPtr->numExecutions = 0; |
| 369 |
|
statsPtr->numCompilations = 0; |
| 370 |
|
statsPtr->numByteCodesFreed = 0; |
| 371 |
|
(VOID *) memset(statsPtr->instructionCount, 0, |
| 372 |
|
sizeof(statsPtr->instructionCount)); |
| 373 |
|
|
| 374 |
|
statsPtr->totalSrcBytes = 0.0; |
| 375 |
|
statsPtr->totalByteCodeBytes = 0.0; |
| 376 |
|
statsPtr->currentSrcBytes = 0.0; |
| 377 |
|
statsPtr->currentByteCodeBytes = 0.0; |
| 378 |
|
(VOID *) memset(statsPtr->srcCount, 0, sizeof(statsPtr->srcCount)); |
| 379 |
|
(VOID *) memset(statsPtr->byteCodeCount, 0, |
| 380 |
|
sizeof(statsPtr->byteCodeCount)); |
| 381 |
|
(VOID *) memset(statsPtr->lifetimeCount, 0, |
| 382 |
|
sizeof(statsPtr->lifetimeCount)); |
| 383 |
|
|
| 384 |
|
statsPtr->currentInstBytes = 0.0; |
| 385 |
|
statsPtr->currentLitBytes = 0.0; |
| 386 |
|
statsPtr->currentExceptBytes = 0.0; |
| 387 |
|
statsPtr->currentAuxBytes = 0.0; |
| 388 |
|
statsPtr->currentCmdMapBytes = 0.0; |
| 389 |
|
|
| 390 |
|
statsPtr->numLiteralsCreated = 0; |
| 391 |
|
statsPtr->totalLitStringBytes = 0.0; |
| 392 |
|
statsPtr->currentLitStringBytes = 0.0; |
| 393 |
|
(VOID *) memset(statsPtr->literalCount, 0, |
| 394 |
|
sizeof(statsPtr->literalCount)); |
| 395 |
|
#endif /* TCL_COMPILE_STATS */ |
| 396 |
|
|
| 397 |
|
/* |
| 398 |
|
* Initialise the stub table pointer. |
| 399 |
|
*/ |
| 400 |
|
|
| 401 |
|
iPtr->stubTable = &tclStubs; |
| 402 |
|
|
| 403 |
|
|
| 404 |
|
/* |
| 405 |
|
* Create the core commands. Do it here, rather than calling |
| 406 |
|
* Tcl_CreateCommand, because it's faster (there's no need to check for |
| 407 |
|
* a pre-existing command by the same name). If a command has a |
| 408 |
|
* Tcl_CmdProc but no Tcl_ObjCmdProc, set the Tcl_ObjCmdProc to |
| 409 |
|
* TclInvokeStringCommand. This is an object-based wrapper procedure |
| 410 |
|
* that extracts strings, calls the string procedure, and creates an |
| 411 |
|
* object for the result. Similarly, if a command has a Tcl_ObjCmdProc |
| 412 |
|
* but no Tcl_CmdProc, set the Tcl_CmdProc to TclInvokeObjectCommand. |
| 413 |
|
*/ |
| 414 |
|
|
| 415 |
|
for (cmdInfoPtr = builtInCmds; cmdInfoPtr->name != NULL; |
| 416 |
|
cmdInfoPtr++) { |
| 417 |
|
int new; |
| 418 |
|
Tcl_HashEntry *hPtr; |
| 419 |
|
|
| 420 |
|
if ((cmdInfoPtr->proc == (Tcl_CmdProc *) NULL) |
| 421 |
|
&& (cmdInfoPtr->objProc == (Tcl_ObjCmdProc *) NULL) |
| 422 |
|
&& (cmdInfoPtr->compileProc == (CompileProc *) NULL)) { |
| 423 |
|
panic("Tcl_CreateInterp: builtin command with NULL string and object command procs and a NULL compile proc\n"); |
| 424 |
|
} |
| 425 |
|
|
| 426 |
|
hPtr = Tcl_CreateHashEntry(&iPtr->globalNsPtr->cmdTable, |
| 427 |
|
cmdInfoPtr->name, &new); |
| 428 |
|
if (new) { |
| 429 |
|
cmdPtr = (Command *) ckalloc(sizeof(Command)); |
| 430 |
|
cmdPtr->hPtr = hPtr; |
| 431 |
|
cmdPtr->nsPtr = iPtr->globalNsPtr; |
| 432 |
|
cmdPtr->refCount = 1; |
| 433 |
|
cmdPtr->cmdEpoch = 0; |
| 434 |
|
cmdPtr->compileProc = cmdInfoPtr->compileProc; |
| 435 |
|
if (cmdInfoPtr->proc == (Tcl_CmdProc *) NULL) { |
| 436 |
|
cmdPtr->proc = TclInvokeObjectCommand; |
| 437 |
|
cmdPtr->clientData = (ClientData) cmdPtr; |
| 438 |
|
} else { |
| 439 |
|
cmdPtr->proc = cmdInfoPtr->proc; |
| 440 |
|
cmdPtr->clientData = (ClientData) NULL; |
| 441 |
|
} |
| 442 |
|
if (cmdInfoPtr->objProc == (Tcl_ObjCmdProc *) NULL) { |
| 443 |
|
cmdPtr->objProc = TclInvokeStringCommand; |
| 444 |
|
cmdPtr->objClientData = (ClientData) cmdPtr; |
| 445 |
|
} else { |
| 446 |
|
cmdPtr->objProc = cmdInfoPtr->objProc; |
| 447 |
|
cmdPtr->objClientData = (ClientData) NULL; |
| 448 |
|
} |
| 449 |
|
cmdPtr->deleteProc = NULL; |
| 450 |
|
cmdPtr->deleteData = (ClientData) NULL; |
| 451 |
|
cmdPtr->deleted = 0; |
| 452 |
|
cmdPtr->importRefPtr = NULL; |
| 453 |
|
Tcl_SetHashValue(hPtr, cmdPtr); |
| 454 |
|
} |
| 455 |
|
} |
| 456 |
|
|
| 457 |
|
/* |
| 458 |
|
* Register the builtin math functions. |
| 459 |
|
*/ |
| 460 |
|
|
| 461 |
|
i = 0; |
| 462 |
|
for (builtinFuncPtr = builtinFuncTable; builtinFuncPtr->name != NULL; |
| 463 |
|
builtinFuncPtr++) { |
| 464 |
|
Tcl_CreateMathFunc((Tcl_Interp *) iPtr, builtinFuncPtr->name, |
| 465 |
|
builtinFuncPtr->numArgs, builtinFuncPtr->argTypes, |
| 466 |
|
(Tcl_MathProc *) NULL, (ClientData) 0); |
| 467 |
|
hPtr = Tcl_FindHashEntry(&iPtr->mathFuncTable, |
| 468 |
|
builtinFuncPtr->name); |
| 469 |
|
if (hPtr == NULL) { |
| 470 |
|
panic("Tcl_CreateInterp: Tcl_CreateMathFunc incorrectly registered '%s'", builtinFuncPtr->name); |
| 471 |
|
return NULL; |
| 472 |
|
} |
| 473 |
|
mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr); |
| 474 |
|
mathFuncPtr->builtinFuncIndex = i; |
| 475 |
|
i++; |
| 476 |
|
} |
| 477 |
|
iPtr->flags |= EXPR_INITIALIZED; |
| 478 |
|
|
| 479 |
|
/* |
| 480 |
|
* Do Multiple/Safe Interps Tcl init stuff |
| 481 |
|
*/ |
| 482 |
|
|
| 483 |
|
TclInterpInit(interp); |
| 484 |
|
|
| 485 |
|
/* |
| 486 |
|
* We used to create the "errorInfo" and "errorCode" global vars at this |
| 487 |
|
* point because so much of the Tcl implementation assumes they already |
| 488 |
|
* exist. This is not quite enough, however, since they can be unset |
| 489 |
|
* at any time. |
| 490 |
|
* |
| 491 |
|
* There are 2 choices: |
| 492 |
|
* + Check every place where a GetVar of those is used |
| 493 |
|
* and the NULL result is not checked (like in tclLoad.c) |
| 494 |
|
* + Make SetVar,... NULL friendly |
| 495 |
|
* We choose the second option because : |
| 496 |
|
* + It is easy and low cost to check for NULL pointer before |
| 497 |
|
* calling strlen() |
| 498 |
|
* + It can be helpfull to other people using those API |
| 499 |
|
* + Passing a NULL value to those closest 'meaning' is empty string |
| 500 |
|
* (specially with the new objects where 0 bytes strings are ok) |
| 501 |
|
* So the following init is commented out: -- dl |
| 502 |
|
* |
| 503 |
|
* (void) Tcl_SetVar2((Tcl_Interp *)iPtr, "errorInfo", (char *) NULL, |
| 504 |
|
* "", TCL_GLOBAL_ONLY); |
| 505 |
|
* (void) Tcl_SetVar2((Tcl_Interp *)iPtr, "errorCode", (char *) NULL, |
| 506 |
|
* "NONE", TCL_GLOBAL_ONLY); |
| 507 |
|
*/ |
| 508 |
|
|
| 509 |
|
#ifndef TCL_GENERIC_ONLY |
| 510 |
|
TclSetupEnv(interp); |
| 511 |
|
#endif |
| 512 |
|
|
| 513 |
|
/* |
| 514 |
|
* Compute the byte order of this machine. |
| 515 |
|
*/ |
| 516 |
|
|
| 517 |
|
order.s = 1; |
| 518 |
|
Tcl_SetVar2(interp, "tcl_platform", "byteOrder", |
| 519 |
|
((order.c[0] == 1) ? "littleEndian" : "bigEndian"), |
| 520 |
|
TCL_GLOBAL_ONLY); |
| 521 |
|
|
| 522 |
|
/* |
| 523 |
|
* Set up other variables such as tcl_version and tcl_library |
| 524 |
|
*/ |
| 525 |
|
|
| 526 |
|
Tcl_SetVar(interp, "tcl_patchLevel", TCL_PATCH_LEVEL, TCL_GLOBAL_ONLY); |
| 527 |
|
Tcl_SetVar(interp, "tcl_version", TCL_VERSION, TCL_GLOBAL_ONLY); |
| 528 |
|
Tcl_TraceVar2(interp, "tcl_precision", (char *) NULL, |
| 529 |
|
TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, |
| 530 |
|
TclPrecTraceProc, (ClientData) NULL); |
| 531 |
|
TclpSetVariables(interp); |
| 532 |
|
|
| 533 |
|
#ifdef TCL_THREADS |
| 534 |
|
/* |
| 535 |
|
* The existence of the "threaded" element of the tcl_platform array indicates |
| 536 |
|
* that this particular Tcl shell has been compiled with threads turned on. |
| 537 |
|
* Using "info exists tcl_platform(threaded)" a Tcl script can introspect on the |
| 538 |
|
* interpreter level of thread safety. |
| 539 |
|
*/ |
| 540 |
|
|
| 541 |
|
|
| 542 |
|
Tcl_SetVar2(interp, "tcl_platform", "threaded", "1", |
| 543 |
|
TCL_GLOBAL_ONLY); |
| 544 |
|
#endif |
| 545 |
|
|
| 546 |
|
/* |
| 547 |
|
* Register Tcl's version number. |
| 548 |
|
*/ |
| 549 |
|
|
| 550 |
|
Tcl_PkgProvideEx(interp, "Tcl", TCL_VERSION, (ClientData) &tclStubs); |
| 551 |
|
|
| 552 |
|
#ifdef Tcl_InitStubs |
| 553 |
|
#undef Tcl_InitStubs |
| 554 |
|
#endif |
| 555 |
|
Tcl_InitStubs(interp, TCL_VERSION, 1); |
| 556 |
|
|
| 557 |
|
return interp; |
| 558 |
|
} |
| 559 |
|
|
| 560 |
|
/* |
| 561 |
|
*---------------------------------------------------------------------- |
| 562 |
|
* |
| 563 |
|
* TclHideUnsafeCommands -- |
| 564 |
|
* |
| 565 |
|
* Hides base commands that are not marked as safe from this |
| 566 |
|
* interpreter. |
| 567 |
|
* |
| 568 |
|
* Results: |
| 569 |
|
* TCL_OK if it succeeds, TCL_ERROR else. |
| 570 |
|
* |
| 571 |
|
* Side effects: |
| 572 |
|
* Hides functionality in an interpreter. |
| 573 |
|
* |
| 574 |
|
*---------------------------------------------------------------------- |
| 575 |
|
*/ |
| 576 |
|
|
| 577 |
|
int |
| 578 |
|
TclHideUnsafeCommands(interp) |
| 579 |
|
Tcl_Interp *interp; /* Hide commands in this interpreter. */ |
| 580 |
|
{ |
| 581 |
|
register CmdInfo *cmdInfoPtr; |
| 582 |
|
|
| 583 |
|
if (interp == (Tcl_Interp *) NULL) { |
| 584 |
|
return TCL_ERROR; |
| 585 |
|
} |
| 586 |
|
for (cmdInfoPtr = builtInCmds; cmdInfoPtr->name != NULL; cmdInfoPtr++) { |
| 587 |
|
if (!cmdInfoPtr->isSafe) { |
| 588 |
|
Tcl_HideCommand(interp, cmdInfoPtr->name, cmdInfoPtr->name); |
| 589 |
|
} |
| 590 |
|
} |
| 591 |
|
return TCL_OK; |
| 592 |
|
} |
| 593 |
|
|
| 594 |
|
/* |
| 595 |
|
*-------------------------------------------------------------- |
| 596 |
|
* |
| 597 |
|
* Tcl_CallWhenDeleted -- |
| 598 |
|
* |
| 599 |
|
* Arrange for a procedure to be called before a given |
| 600 |
|
* interpreter is deleted. The procedure is called as soon |
| 601 |
|
* as Tcl_DeleteInterp is called; if Tcl_CallWhenDeleted is |
| 602 |
|
* called on an interpreter that has already been deleted, |
| 603 |
|
* the procedure will be called when the last Tcl_Release is |
| 604 |
|
* done on the interpreter. |
| 605 |
|
* |
| 606 |
|
* Results: |
| 607 |
|
* None. |
| 608 |
|
* |
| 609 |
|
* Side effects: |
| 610 |
|
* When Tcl_DeleteInterp is invoked to delete interp, |
| 611 |
|
* proc will be invoked. See the manual entry for |
| 612 |
|
* details. |
| 613 |
|
* |
| 614 |
|
*-------------------------------------------------------------- |
| 615 |
|
*/ |
| 616 |
|
|
| 617 |
|
void |
| 618 |
|
Tcl_CallWhenDeleted(interp, proc, clientData) |
| 619 |
|
Tcl_Interp *interp; /* Interpreter to watch. */ |
| 620 |
|
Tcl_InterpDeleteProc *proc; /* Procedure to call when interpreter |
| 621 |
|
* is about to be deleted. */ |
| 622 |
|
ClientData clientData; /* One-word value to pass to proc. */ |
| 623 |
|
{ |
| 624 |
|
Interp *iPtr = (Interp *) interp; |
| 625 |
|
static int assocDataCounter = 0; |
| 626 |
|
#ifdef TCL_THREADS |
| 627 |
|
static Tcl_Mutex assocMutex; |
| 628 |
|
#endif |
| 629 |
|
int new; |
| 630 |
|
char buffer[32 + TCL_INTEGER_SPACE]; |
| 631 |
|
AssocData *dPtr = (AssocData *) ckalloc(sizeof(AssocData)); |
| 632 |
|
Tcl_HashEntry *hPtr; |
| 633 |
|
|
| 634 |
|
Tcl_MutexLock(&assocMutex); |
| 635 |
|
sprintf(buffer, "Assoc Data Key #%d", assocDataCounter); |
| 636 |
|
assocDataCounter++; |
| 637 |
|
Tcl_MutexUnlock(&assocMutex); |
| 638 |
|
|
| 639 |
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
| 640 |
|
iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable)); |
| 641 |
|
Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS); |
| 642 |
|
} |
| 643 |
|
hPtr = Tcl_CreateHashEntry(iPtr->assocData, buffer, &new); |
| 644 |
|
dPtr->proc = proc; |
| 645 |
|
dPtr->clientData = clientData; |
| 646 |
|
Tcl_SetHashValue(hPtr, dPtr); |
| 647 |
|
} |
| 648 |
|
|
| 649 |
|
/* |
| 650 |
|
*-------------------------------------------------------------- |
| 651 |
|
* |
| 652 |
|
* Tcl_DontCallWhenDeleted -- |
| 653 |
|
* |
| 654 |
|
* Cancel the arrangement for a procedure to be called when |
| 655 |
|
* a given interpreter is deleted. |
| 656 |
|
* |
| 657 |
|
* Results: |
| 658 |
|
* None. |
| 659 |
|
* |
| 660 |
|
* Side effects: |
| 661 |
|
* If proc and clientData were previously registered as a |
| 662 |
|
* callback via Tcl_CallWhenDeleted, they are unregistered. |
| 663 |
|
* If they weren't previously registered then nothing |
| 664 |
|
* happens. |
| 665 |
|
* |
| 666 |
|
*-------------------------------------------------------------- |
| 667 |
|
*/ |
| 668 |
|
|
| 669 |
|
void |
| 670 |
|
Tcl_DontCallWhenDeleted(interp, proc, clientData) |
| 671 |
|
Tcl_Interp *interp; /* Interpreter to watch. */ |
| 672 |
|
Tcl_InterpDeleteProc *proc; /* Procedure to call when interpreter |
| 673 |
|
* is about to be deleted. */ |
| 674 |
|
ClientData clientData; /* One-word value to pass to proc. */ |
| 675 |
|
{ |
| 676 |
|
Interp *iPtr = (Interp *) interp; |
| 677 |
|
Tcl_HashTable *hTablePtr; |
| 678 |
|
Tcl_HashSearch hSearch; |
| 679 |
|
Tcl_HashEntry *hPtr; |
| 680 |
|
AssocData *dPtr; |
| 681 |
|
|
| 682 |
|
hTablePtr = iPtr->assocData; |
| 683 |
|
if (hTablePtr == (Tcl_HashTable *) NULL) { |
| 684 |
|
return; |
| 685 |
|
} |
| 686 |
|
for (hPtr = Tcl_FirstHashEntry(hTablePtr, &hSearch); hPtr != NULL; |
| 687 |
|
hPtr = Tcl_NextHashEntry(&hSearch)) { |
| 688 |
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
| 689 |
|
if ((dPtr->proc == proc) && (dPtr->clientData == clientData)) { |
| 690 |
|
ckfree((char *) dPtr); |
| 691 |
|
Tcl_DeleteHashEntry(hPtr); |
| 692 |
|
return; |
| 693 |
|
} |
| 694 |
|
} |
| 695 |
|
} |
| 696 |
|
|
| 697 |
|
/* |
| 698 |
|
*---------------------------------------------------------------------- |
| 699 |
|
* |
| 700 |
|
* Tcl_SetAssocData -- |
| 701 |
|
* |
| 702 |
|
* Creates a named association between user-specified data, a delete |
| 703 |
|
* function and this interpreter. If the association already exists |
| 704 |
|
* the data is overwritten with the new data. The delete function will |
| 705 |
|
* be invoked when the interpreter is deleted. |
| 706 |
|
* |
| 707 |
|
* Results: |
| 708 |
|
* None. |
| 709 |
|
* |
| 710 |
|
* Side effects: |
| 711 |
|
* Sets the associated data, creates the association if needed. |
| 712 |
|
* |
| 713 |
|
*---------------------------------------------------------------------- |
| 714 |
|
*/ |
| 715 |
|
|
| 716 |
|
void |
| 717 |
|
Tcl_SetAssocData(interp, name, proc, clientData) |
| 718 |
|
Tcl_Interp *interp; /* Interpreter to associate with. */ |
| 719 |
|
char *name; /* Name for association. */ |
| 720 |
|
Tcl_InterpDeleteProc *proc; /* Proc to call when interpreter is |
| 721 |
|
* about to be deleted. */ |
| 722 |
|
ClientData clientData; /* One-word value to pass to proc. */ |
| 723 |
|
{ |
| 724 |
|
Interp *iPtr = (Interp *) interp; |
| 725 |
|
AssocData *dPtr; |
| 726 |
|
Tcl_HashEntry *hPtr; |
| 727 |
|
int new; |
| 728 |
|
|
| 729 |
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
| 730 |
|
iPtr->assocData = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable)); |
| 731 |
|
Tcl_InitHashTable(iPtr->assocData, TCL_STRING_KEYS); |
| 732 |
|
} |
| 733 |
|
hPtr = Tcl_CreateHashEntry(iPtr->assocData, name, &new); |
| 734 |
|
if (new == 0) { |
| 735 |
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
| 736 |
|
} else { |
| 737 |
|
dPtr = (AssocData *) ckalloc(sizeof(AssocData)); |
| 738 |
|
} |
| 739 |
|
dPtr->proc = proc; |
| 740 |
|
dPtr->clientData = clientData; |
| 741 |
|
|
| 742 |
|
Tcl_SetHashValue(hPtr, dPtr); |
| 743 |
|
} |
| 744 |
|
|
| 745 |
|
/* |
| 746 |
|
*---------------------------------------------------------------------- |
| 747 |
|
* |
| 748 |
|
* Tcl_DeleteAssocData -- |
| 749 |
|
* |
| 750 |
|
* Deletes a named association of user-specified data with |
| 751 |
|
* the specified interpreter. |
| 752 |
|
* |
| 753 |
|
* Results: |
| 754 |
|
* None. |
| 755 |
|
* |
| 756 |
|
* Side effects: |
| 757 |
|
* Deletes the association. |
| 758 |
|
* |
| 759 |
|
*---------------------------------------------------------------------- |
| 760 |
|
*/ |
| 761 |
|
|
| 762 |
|
void |
| 763 |
|
Tcl_DeleteAssocData(interp, name) |
| 764 |
|
Tcl_Interp *interp; /* Interpreter to associate with. */ |
| 765 |
|
char *name; /* Name of association. */ |
| 766 |
|
{ |
| 767 |
|
Interp *iPtr = (Interp *) interp; |
| 768 |
|
AssocData *dPtr; |
| 769 |
|
Tcl_HashEntry *hPtr; |
| 770 |
|
|
| 771 |
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
| 772 |
|
return; |
| 773 |
|
} |
| 774 |
|
hPtr = Tcl_FindHashEntry(iPtr->assocData, name); |
| 775 |
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
| 776 |
|
return; |
| 777 |
|
} |
| 778 |
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
| 779 |
|
if (dPtr->proc != NULL) { |
| 780 |
|
(dPtr->proc) (dPtr->clientData, interp); |
| 781 |
|
} |
| 782 |
|
ckfree((char *) dPtr); |
| 783 |
|
Tcl_DeleteHashEntry(hPtr); |
| 784 |
|
} |
| 785 |
|
|
| 786 |
|
/* |
| 787 |
|
*---------------------------------------------------------------------- |
| 788 |
|
* |
| 789 |
|
* Tcl_GetAssocData -- |
| 790 |
|
* |
| 791 |
|
* Returns the client data associated with this name in the |
| 792 |
|
* specified interpreter. |
| 793 |
|
* |
| 794 |
|
* Results: |
| 795 |
|
* The client data in the AssocData record denoted by the named |
| 796 |
|
* association, or NULL. |
| 797 |
|
* |
| 798 |
|
* Side effects: |
| 799 |
|
* None. |
| 800 |
|
* |
| 801 |
|
*---------------------------------------------------------------------- |
| 802 |
|
*/ |
| 803 |
|
|
| 804 |
|
ClientData |
| 805 |
|
Tcl_GetAssocData(interp, name, procPtr) |
| 806 |
|
Tcl_Interp *interp; /* Interpreter associated with. */ |
| 807 |
|
char *name; /* Name of association. */ |
| 808 |
|
Tcl_InterpDeleteProc **procPtr; /* Pointer to place to store address |
| 809 |
|
* of current deletion callback. */ |
| 810 |
|
{ |
| 811 |
|
Interp *iPtr = (Interp *) interp; |
| 812 |
|
AssocData *dPtr; |
| 813 |
|
Tcl_HashEntry *hPtr; |
| 814 |
|
|
| 815 |
|
if (iPtr->assocData == (Tcl_HashTable *) NULL) { |
| 816 |
|
return (ClientData) NULL; |
| 817 |
|
} |
| 818 |
|
hPtr = Tcl_FindHashEntry(iPtr->assocData, name); |
| 819 |
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
| 820 |
|
return (ClientData) NULL; |
| 821 |
|
} |
| 822 |
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
| 823 |
|
if (procPtr != (Tcl_InterpDeleteProc **) NULL) { |
| 824 |
|
*procPtr = dPtr->proc; |
| 825 |
|
} |
| 826 |
|
return dPtr->clientData; |
| 827 |
|
} |
| 828 |
|
|
| 829 |
|
/* |
| 830 |
|
*---------------------------------------------------------------------- |
| 831 |
|
* |
| 832 |
|
* Tcl_InterpDeleted -- |
| 833 |
|
* |
| 834 |
|
* Returns nonzero if the interpreter has been deleted with a call |
| 835 |
|
* to Tcl_DeleteInterp. |
| 836 |
|
* |
| 837 |
|
* Results: |
| 838 |
|
* Nonzero if the interpreter is deleted, zero otherwise. |
| 839 |
|
* |
| 840 |
|
* Side effects: |
| 841 |
|
* None. |
| 842 |
|
* |
| 843 |
|
*---------------------------------------------------------------------- |
| 844 |
|
*/ |
| 845 |
|
|
| 846 |
|
int |
| 847 |
|
Tcl_InterpDeleted(interp) |
| 848 |
|
Tcl_Interp *interp; |
| 849 |
|
{ |
| 850 |
|
return (((Interp *) interp)->flags & DELETED) ? 1 : 0; |
| 851 |
|
} |
| 852 |
|
|
| 853 |
|
/* |
| 854 |
|
*---------------------------------------------------------------------- |
| 855 |
|
* |
| 856 |
|
* Tcl_DeleteInterp -- |
| 857 |
|
* |
| 858 |
|
* Ensures that the interpreter will be deleted eventually. If there |
| 859 |
|
* are no Tcl_Preserve calls in effect for this interpreter, it is |
| 860 |
|
* deleted immediately, otherwise the interpreter is deleted when |
| 861 |
|
* the last Tcl_Preserve is matched by a call to Tcl_Release. In either |
| 862 |
|
* case, the procedure runs the currently registered deletion callbacks. |
| 863 |
|
* |
| 864 |
|
* Results: |
| 865 |
|
* None. |
| 866 |
|
* |
| 867 |
|
* Side effects: |
| 868 |
|
* The interpreter is marked as deleted. The caller may still use it |
| 869 |
|
* safely if there are calls to Tcl_Preserve in effect for the |
| 870 |
|
* interpreter, but further calls to Tcl_Eval etc in this interpreter |
| 871 |
|
* will fail. |
| 872 |
|
* |
| 873 |
|
*---------------------------------------------------------------------- |
| 874 |
|
*/ |
| 875 |
|
|
| 876 |
|
void |
| 877 |
|
Tcl_DeleteInterp(interp) |
| 878 |
|
Tcl_Interp *interp; /* Token for command interpreter (returned |
| 879 |
|
* by a previous call to Tcl_CreateInterp). */ |
| 880 |
|
{ |
| 881 |
|
Interp *iPtr = (Interp *) interp; |
| 882 |
|
|
| 883 |
|
/* |
| 884 |
|
* If the interpreter has already been marked deleted, just punt. |
| 885 |
|
*/ |
| 886 |
|
|
| 887 |
|
if (iPtr->flags & DELETED) { |
| 888 |
|
return; |
| 889 |
|
} |
| 890 |
|
|
| 891 |
|
/* |
| 892 |
|
* Mark the interpreter as deleted. No further evals will be allowed. |
| 893 |
|
*/ |
| 894 |
|
|
| 895 |
|
iPtr->flags |= DELETED; |
| 896 |
|
|
| 897 |
|
/* |
| 898 |
|
* Ensure that the interpreter is eventually deleted. |
| 899 |
|
*/ |
| 900 |
|
|
| 901 |
|
Tcl_EventuallyFree((ClientData) interp, |
| 902 |
|
(Tcl_FreeProc *) DeleteInterpProc); |
| 903 |
|
} |
| 904 |
|
|
| 905 |
|
/* |
| 906 |
|
*---------------------------------------------------------------------- |
| 907 |
|
* |
| 908 |
|
* DeleteInterpProc -- |
| 909 |
|
* |
| 910 |
|
* Helper procedure to delete an interpreter. This procedure is |
| 911 |
|
* called when the last call to Tcl_Preserve on this interpreter |
| 912 |
|
* is matched by a call to Tcl_Release. The procedure cleans up |
| 913 |
|
* all resources used in the interpreter and calls all currently |
| 914 |
|
* registered interpreter deletion callbacks. |
| 915 |
|
* |
| 916 |
|
* Results: |
| 917 |
|
* None. |
| 918 |
|
* |
| 919 |
|
* Side effects: |
| 920 |
|
* Whatever the interpreter deletion callbacks do. Frees resources |
| 921 |
|
* used by the interpreter. |
| 922 |
|
* |
| 923 |
|
*---------------------------------------------------------------------- |
| 924 |
|
*/ |
| 925 |
|
|
| 926 |
|
static void |
| 927 |
|
DeleteInterpProc(interp) |
| 928 |
|
Tcl_Interp *interp; /* Interpreter to delete. */ |
| 929 |
|
{ |
| 930 |
|
Interp *iPtr = (Interp *) interp; |
| 931 |
|
Tcl_HashEntry *hPtr; |
| 932 |
|
Tcl_HashSearch search; |
| 933 |
|
Tcl_HashTable *hTablePtr; |
| 934 |
|
ResolverScheme *resPtr, *nextResPtr; |
| 935 |
|
|
| 936 |
|
/* |
| 937 |
|
* Punt if there is an error in the Tcl_Release/Tcl_Preserve matchup. |
| 938 |
|
*/ |
| 939 |
|
|
| 940 |
|
if (iPtr->numLevels > 0) { |
| 941 |
|
panic("DeleteInterpProc called with active evals"); |
| 942 |
|
} |
| 943 |
|
|
| 944 |
|
/* |
| 945 |
|
* The interpreter should already be marked deleted; otherwise how |
| 946 |
|
* did we get here? |
| 947 |
|
*/ |
| 948 |
|
|
| 949 |
|
if (!(iPtr->flags & DELETED)) { |
| 950 |
|
panic("DeleteInterpProc called on interpreter not marked deleted"); |
| 951 |
|
} |
| 952 |
|
|
| 953 |
|
TclHandleFree(iPtr->handle); |
| 954 |
|
|
| 955 |
|
/* |
| 956 |
|
* Dismantle everything in the global namespace except for the |
| 957 |
|
* "errorInfo" and "errorCode" variables. These remain until the |
| 958 |
|
* namespace is actually destroyed, in case any errors occur. |
| 959 |
|
* |
| 960 |
|
* Dismantle the namespace here, before we clear the assocData. If any |
| 961 |
|
* background errors occur here, they will be deleted below. |
| 962 |
|
*/ |
| 963 |
|
|
| 964 |
|
TclTeardownNamespace(iPtr->globalNsPtr); |
| 965 |
|
|
| 966 |
|
/* |
| 967 |
|
* Delete all the hidden commands. |
| 968 |
|
*/ |
| 969 |
|
|
| 970 |
|
hTablePtr = iPtr->hiddenCmdTablePtr; |
| 971 |
|
if (hTablePtr != NULL) { |
| 972 |
|
/* |
| 973 |
|
* Non-pernicious deletion. The deletion callbacks will not be |
| 974 |
|
* allowed to create any new hidden or non-hidden commands. |
| 975 |
|
* Tcl_DeleteCommandFromToken() will remove the entry from the |
| 976 |
|
* hiddenCmdTablePtr. |
| 977 |
|
*/ |
| 978 |
|
|
| 979 |
|
hPtr = Tcl_FirstHashEntry(hTablePtr, &search); |
| 980 |
|
for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
| 981 |
|
Tcl_DeleteCommandFromToken(interp, |
| 982 |
|
(Tcl_Command) Tcl_GetHashValue(hPtr)); |
| 983 |
|
} |
| 984 |
|
Tcl_DeleteHashTable(hTablePtr); |
| 985 |
|
ckfree((char *) hTablePtr); |
| 986 |
|
} |
| 987 |
|
/* |
| 988 |
|
* Tear down the math function table. |
| 989 |
|
*/ |
| 990 |
|
|
| 991 |
|
for (hPtr = Tcl_FirstHashEntry(&iPtr->mathFuncTable, &search); |
| 992 |
|
hPtr != NULL; |
| 993 |
|
hPtr = Tcl_NextHashEntry(&search)) { |
| 994 |
|
ckfree((char *) Tcl_GetHashValue(hPtr)); |
| 995 |
|
} |
| 996 |
|
Tcl_DeleteHashTable(&iPtr->mathFuncTable); |
| 997 |
|
|
| 998 |
|
/* |
| 999 |
|
* Invoke deletion callbacks; note that a callback can create new |
| 1000 |
|
* callbacks, so we iterate. |
| 1001 |
|
*/ |
| 1002 |
|
|
| 1003 |
|
while (iPtr->assocData != (Tcl_HashTable *) NULL) { |
| 1004 |
|
AssocData *dPtr; |
| 1005 |
|
|
| 1006 |
|
hTablePtr = iPtr->assocData; |
| 1007 |
|
iPtr->assocData = (Tcl_HashTable *) NULL; |
| 1008 |
|
for (hPtr = Tcl_FirstHashEntry(hTablePtr, &search); |
| 1009 |
|
hPtr != NULL; |
| 1010 |
|
hPtr = Tcl_FirstHashEntry(hTablePtr, &search)) { |
| 1011 |
|
dPtr = (AssocData *) Tcl_GetHashValue(hPtr); |
| 1012 |
|
Tcl_DeleteHashEntry(hPtr); |
| 1013 |
|
if (dPtr->proc != NULL) { |
| 1014 |
|
(*dPtr->proc)(dPtr->clientData, interp); |
| 1015 |
|
} |
| 1016 |
|
ckfree((char *) dPtr); |
| 1017 |
|
} |
| 1018 |
|
Tcl_DeleteHashTable(hTablePtr); |
| 1019 |
|
ckfree((char *) hTablePtr); |
| 1020 |
|
} |
| 1021 |
|
|
| 1022 |
|
/* |
| 1023 |
|
* Finish deleting the global namespace. |
| 1024 |
|
*/ |
| 1025 |
|
|
| 1026 |
|
Tcl_DeleteNamespace((Tcl_Namespace *) iPtr->globalNsPtr); |
| 1027 |
|
|
| 1028 |
|
/* |
| 1029 |
|
* Free up the result *after* deleting variables, since variable |
| 1030 |
|
* deletion could have transferred ownership of the result string |
| 1031 |
|
* to Tcl. |
| 1032 |
|
*/ |
| 1033 |
|
|
| 1034 |
|
Tcl_FreeResult(interp); |
| 1035 |
|
interp->result = NULL; |
| 1036 |
|
Tcl_DecrRefCount(iPtr->objResultPtr); |
| 1037 |
|
iPtr->objResultPtr = NULL; |
| 1038 |
|
if (iPtr->errorInfo != NULL) { |
| 1039 |
|
ckfree(iPtr->errorInfo); |
| 1040 |
|
iPtr->errorInfo = NULL; |
| 1041 |
|
} |
| 1042 |
|
if (iPtr->errorCode != NULL) { |
| 1043 |
|
ckfree(iPtr->errorCode); |
| 1044 |
|
iPtr->errorCode = NULL; |
| 1045 |
|
} |
| 1046 |
|
if (iPtr->appendResult != NULL) { |
| 1047 |
|
ckfree(iPtr->appendResult); |
| 1048 |
|
iPtr->appendResult = NULL; |
| 1049 |
|
} |
| 1050 |
|
TclFreePackageInfo(iPtr); |
| 1051 |
|
while (iPtr->tracePtr != NULL) { |
| 1052 |
|
Trace *nextPtr = iPtr->tracePtr->nextPtr; |
| 1053 |
|
|
| 1054 |
|
ckfree((char *) iPtr->tracePtr); |
| 1055 |
|
iPtr->tracePtr = nextPtr; |
| 1056 |
|
} |
| 1057 |
|
if (iPtr->execEnvPtr != NULL) { |
| 1058 |
|
TclDeleteExecEnv(iPtr->execEnvPtr); |
| 1059 |
|
} |
| 1060 |
|
Tcl_DecrRefCount(iPtr->emptyObjPtr); |
| 1061 |
|
iPtr->emptyObjPtr = NULL; |
| 1062 |
|
|
| 1063 |
|
resPtr = iPtr->resolverPtr; |
| 1064 |
|
while (resPtr) { |
| 1065 |
|
nextResPtr = resPtr->nextPtr; |
| 1066 |
|
ckfree(resPtr->name); |
| 1067 |
|
ckfree((char *) resPtr); |
| 1068 |
|
resPtr = nextResPtr; |
| 1069 |
|
} |
| 1070 |
|
|
| 1071 |
|
/* |
| 1072 |
|
* Free up literal objects created for scripts compiled by the |
| 1073 |
|
* interpreter. |
| 1074 |
|
*/ |
| 1075 |
|
|
| 1076 |
|
TclDeleteLiteralTable(interp, &(iPtr->literalTable)); |
| 1077 |
|
ckfree((char *) iPtr); |
| 1078 |
|
} |
| 1079 |
|
|
| 1080 |
|
/* |
| 1081 |
|
*--------------------------------------------------------------------------- |
| 1082 |
|
* |
| 1083 |
|
* Tcl_HideCommand -- |
| 1084 |
|
* |
| 1085 |
|
* Makes a command hidden so that it cannot be invoked from within |
| 1086 |
|
* an interpreter, only from within an ancestor. |
| 1087 |
|
* |
| 1088 |
|
* Results: |
| 1089 |
|
* A standard Tcl result; also leaves a message in the interp's result |
| 1090 |
|
* if an error occurs. |
| 1091 |
|
* |
| 1092 |
|
* Side effects: |
| 1093 |
|
* Removes a command from the command table and create an entry |
| 1094 |
|
* into the hidden command table under the specified token name. |
| 1095 |
|
* |
| 1096 |
|
*--------------------------------------------------------------------------- |
| 1097 |
|
*/ |
| 1098 |
|
|
| 1099 |
|
int |
| 1100 |
|
Tcl_HideCommand(interp, cmdName, hiddenCmdToken) |
| 1101 |
|
Tcl_Interp *interp; /* Interpreter in which to hide command. */ |
| 1102 |
|
char *cmdName; /* Name of command to hide. */ |
| 1103 |
|
char *hiddenCmdToken; /* Token name of the to-be-hidden command. */ |
| 1104 |
|
{ |
| 1105 |
|
Interp *iPtr = (Interp *) interp; |
| 1106 |
|
Tcl_Command cmd; |
| 1107 |
|
Command *cmdPtr; |
| 1108 |
|
Tcl_HashTable *hiddenCmdTablePtr; |
| 1109 |
|
Tcl_HashEntry *hPtr; |
| 1110 |
|
int new; |
| 1111 |
|
|
| 1112 |
|
if (iPtr->flags & DELETED) { |
| 1113 |
|
|
| 1114 |
|
/* |
| 1115 |
|
* The interpreter is being deleted. Do not create any new |
| 1116 |
|
* structures, because it is not safe to modify the interpreter. |
| 1117 |
|
*/ |
| 1118 |
|
|
| 1119 |
|
return TCL_ERROR; |
| 1120 |
|
} |
| 1121 |
|
|
| 1122 |
|
/* |
| 1123 |
|
* Disallow hiding of commands that are currently in a namespace or |
| 1124 |
|
* renaming (as part of hiding) into a namespace. |
| 1125 |
|
* |
| 1126 |
|
* (because the current implementation with a single global table |
| 1127 |
|
* and the needed uniqueness of names cause problems with namespaces) |
| 1128 |
|
* |
| 1129 |
|
* we don't need to check for "::" in cmdName because the real check is |
| 1130 |
|
* on the nsPtr below. |
| 1131 |
|
* |
| 1132 |
|
* hiddenCmdToken is just a string which is not interpreted in any way. |
| 1133 |
|
* It may contain :: but the string is not interpreted as a namespace |
| 1134 |
|
* qualifier command name. Thus, hiding foo::bar to foo::bar and then |
| 1135 |
|
* trying to expose or invoke ::foo::bar will NOT work; but if the |
| 1136 |
|
* application always uses the same strings it will get consistent |
| 1137 |
|
* behaviour. |
| 1138 |
|
* |
| 1139 |
|
* But as we currently limit ourselves to the global namespace only |
| 1140 |
|
* for the source, in order to avoid potential confusion, |
| 1141 |
|
* lets prevent "::" in the token too. --dl |
| 1142 |
|
*/ |
| 1143 |
|
|
| 1144 |
|
if (strstr(hiddenCmdToken, "::") != NULL) { |
| 1145 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1146 |
|
"cannot use namespace qualifiers as hidden command", |
| 1147 |
|
"token (rename)", (char *) NULL); |
| 1148 |
|
return TCL_ERROR; |
| 1149 |
|
} |
| 1150 |
|
|
| 1151 |
|
/* |
| 1152 |
|
* Find the command to hide. An error is returned if cmdName can't |
| 1153 |
|
* be found. Look up the command only from the global namespace. |
| 1154 |
|
* Full path of the command must be given if using namespaces. |
| 1155 |
|
*/ |
| 1156 |
|
|
| 1157 |
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
| 1158 |
|
/*flags*/ TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY); |
| 1159 |
|
if (cmd == (Tcl_Command) NULL) { |
| 1160 |
|
return TCL_ERROR; |
| 1161 |
|
} |
| 1162 |
|
cmdPtr = (Command *) cmd; |
| 1163 |
|
|
| 1164 |
|
/* |
| 1165 |
|
* Check that the command is really in global namespace |
| 1166 |
|
*/ |
| 1167 |
|
|
| 1168 |
|
if ( cmdPtr->nsPtr != iPtr->globalNsPtr ) { |
| 1169 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1170 |
|
"can only hide global namespace commands", |
| 1171 |
|
" (use rename then hide)", (char *) NULL); |
| 1172 |
|
return TCL_ERROR; |
| 1173 |
|
} |
| 1174 |
|
|
| 1175 |
|
/* |
| 1176 |
|
* Initialize the hidden command table if necessary. |
| 1177 |
|
*/ |
| 1178 |
|
|
| 1179 |
|
hiddenCmdTablePtr = iPtr->hiddenCmdTablePtr; |
| 1180 |
|
if (hiddenCmdTablePtr == NULL) { |
| 1181 |
|
hiddenCmdTablePtr = (Tcl_HashTable *) |
| 1182 |
|
ckalloc((unsigned) sizeof(Tcl_HashTable)); |
| 1183 |
|
Tcl_InitHashTable(hiddenCmdTablePtr, TCL_STRING_KEYS); |
| 1184 |
|
iPtr->hiddenCmdTablePtr = hiddenCmdTablePtr; |
| 1185 |
|
} |
| 1186 |
|
|
| 1187 |
|
/* |
| 1188 |
|
* It is an error to move an exposed command to a hidden command with |
| 1189 |
|
* hiddenCmdToken if a hidden command with the name hiddenCmdToken already |
| 1190 |
|
* exists. |
| 1191 |
|
*/ |
| 1192 |
|
|
| 1193 |
|
hPtr = Tcl_CreateHashEntry(hiddenCmdTablePtr, hiddenCmdToken, &new); |
| 1194 |
|
if (!new) { |
| 1195 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1196 |
|
"hidden command named \"", hiddenCmdToken, "\" already exists", |
| 1197 |
|
(char *) NULL); |
| 1198 |
|
return TCL_ERROR; |
| 1199 |
|
} |
| 1200 |
|
|
| 1201 |
|
/* |
| 1202 |
|
* Nb : This code is currently 'like' a rename to a specialy set apart |
| 1203 |
|
* name table. Changes here and in TclRenameCommand must |
| 1204 |
|
* be kept in synch untill the common parts are actually |
| 1205 |
|
* factorized out. |
| 1206 |
|
*/ |
| 1207 |
|
|
| 1208 |
|
/* |
| 1209 |
|
* Remove the hash entry for the command from the interpreter command |
| 1210 |
|
* table. This is like deleting the command, so bump its command epoch; |
| 1211 |
|
* this invalidates any cached references that point to the command. |
| 1212 |
|
*/ |
| 1213 |
|
|
| 1214 |
|
if (cmdPtr->hPtr != NULL) { |
| 1215 |
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
| 1216 |
|
cmdPtr->hPtr = (Tcl_HashEntry *) NULL; |
| 1217 |
|
cmdPtr->cmdEpoch++; |
| 1218 |
|
} |
| 1219 |
|
|
| 1220 |
|
/* |
| 1221 |
|
* Now link the hash table entry with the command structure. |
| 1222 |
|
* We ensured above that the nsPtr was right. |
| 1223 |
|
*/ |
| 1224 |
|
|
| 1225 |
|
cmdPtr->hPtr = hPtr; |
| 1226 |
|
Tcl_SetHashValue(hPtr, (ClientData) cmdPtr); |
| 1227 |
|
|
| 1228 |
|
/* |
| 1229 |
|
* If the command being hidden has a compile procedure, increment the |
| 1230 |
|
* interpreter's compileEpoch to invalidate its compiled code. This |
| 1231 |
|
* makes sure that we don't later try to execute old code compiled with |
| 1232 |
|
* command-specific (i.e., inline) bytecodes for the now-hidden |
| 1233 |
|
* command. This field is checked in Tcl_EvalObj and ObjInterpProc, |
| 1234 |
|
* and code whose compilation epoch doesn't match is recompiled. |
| 1235 |
|
*/ |
| 1236 |
|
|
| 1237 |
|
if (cmdPtr->compileProc != NULL) { |
| 1238 |
|
iPtr->compileEpoch++; |
| 1239 |
|
} |
| 1240 |
|
return TCL_OK; |
| 1241 |
|
} |
| 1242 |
|
|
| 1243 |
|
/* |
| 1244 |
|
*---------------------------------------------------------------------- |
| 1245 |
|
* |
| 1246 |
|
* Tcl_ExposeCommand -- |
| 1247 |
|
* |
| 1248 |
|
* Makes a previously hidden command callable from inside the |
| 1249 |
|
* interpreter instead of only by its ancestors. |
| 1250 |
|
* |
| 1251 |
|
* Results: |
| 1252 |
|
* A standard Tcl result. If an error occurs, a message is left |
| 1253 |
|
* in the interp's result. |
| 1254 |
|
* |
| 1255 |
|
* Side effects: |
| 1256 |
|
* Moves commands from one hash table to another. |
| 1257 |
|
* |
| 1258 |
|
*---------------------------------------------------------------------- |
| 1259 |
|
*/ |
| 1260 |
|
|
| 1261 |
|
int |
| 1262 |
|
Tcl_ExposeCommand(interp, hiddenCmdToken, cmdName) |
| 1263 |
|
Tcl_Interp *interp; /* Interpreter in which to make command |
| 1264 |
|
* callable. */ |
| 1265 |
|
char *hiddenCmdToken; /* Name of hidden command. */ |
| 1266 |
|
char *cmdName; /* Name of to-be-exposed command. */ |
| 1267 |
|
{ |
| 1268 |
|
Interp *iPtr = (Interp *) interp; |
| 1269 |
|
Command *cmdPtr; |
| 1270 |
|
Namespace *nsPtr; |
| 1271 |
|
Tcl_HashEntry *hPtr; |
| 1272 |
|
Tcl_HashTable *hiddenCmdTablePtr; |
| 1273 |
|
int new; |
| 1274 |
|
|
| 1275 |
|
if (iPtr->flags & DELETED) { |
| 1276 |
|
/* |
| 1277 |
|
* The interpreter is being deleted. Do not create any new |
| 1278 |
|
* structures, because it is not safe to modify the interpreter. |
| 1279 |
|
*/ |
| 1280 |
|
|
| 1281 |
|
return TCL_ERROR; |
| 1282 |
|
} |
| 1283 |
|
|
| 1284 |
|
/* |
| 1285 |
|
* Check that we have a regular name for the command |
| 1286 |
|
* (that the user is not trying to do an expose and a rename |
| 1287 |
|
* (to another namespace) at the same time) |
| 1288 |
|
*/ |
| 1289 |
|
|
| 1290 |
|
if (strstr(cmdName, "::") != NULL) { |
| 1291 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1292 |
|
"can not expose to a namespace ", |
| 1293 |
|
"(use expose to toplevel, then rename)", |
| 1294 |
|
(char *) NULL); |
| 1295 |
|
return TCL_ERROR; |
| 1296 |
|
} |
| 1297 |
|
|
| 1298 |
|
/* |
| 1299 |
|
* Get the command from the hidden command table: |
| 1300 |
|
*/ |
| 1301 |
|
|
| 1302 |
|
hPtr = NULL; |
| 1303 |
|
hiddenCmdTablePtr = iPtr->hiddenCmdTablePtr; |
| 1304 |
|
if (hiddenCmdTablePtr != NULL) { |
| 1305 |
|
hPtr = Tcl_FindHashEntry(hiddenCmdTablePtr, hiddenCmdToken); |
| 1306 |
|
} |
| 1307 |
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
| 1308 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1309 |
|
"unknown hidden command \"", hiddenCmdToken, |
| 1310 |
|
"\"", (char *) NULL); |
| 1311 |
|
return TCL_ERROR; |
| 1312 |
|
} |
| 1313 |
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
| 1314 |
|
|
| 1315 |
|
|
| 1316 |
|
/* |
| 1317 |
|
* Check that we have a true global namespace |
| 1318 |
|
* command (enforced by Tcl_HideCommand() but let's double |
| 1319 |
|
* check. (If it was not, we would not really know how to |
| 1320 |
|
* handle it). |
| 1321 |
|
*/ |
| 1322 |
|
if ( cmdPtr->nsPtr != iPtr->globalNsPtr ) { |
| 1323 |
|
/* |
| 1324 |
|
* This case is theoritically impossible, |
| 1325 |
|
* we might rather panic() than 'nicely' erroring out ? |
| 1326 |
|
*/ |
| 1327 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1328 |
|
"trying to expose a non global command name space command", |
| 1329 |
|
(char *) NULL); |
| 1330 |
|
return TCL_ERROR; |
| 1331 |
|
} |
| 1332 |
|
|
| 1333 |
|
/* This is the global table */ |
| 1334 |
|
nsPtr = cmdPtr->nsPtr; |
| 1335 |
|
|
| 1336 |
|
/* |
| 1337 |
|
* It is an error to overwrite an existing exposed command as a result |
| 1338 |
|
* of exposing a previously hidden command. |
| 1339 |
|
*/ |
| 1340 |
|
|
| 1341 |
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, cmdName, &new); |
| 1342 |
|
if (!new) { |
| 1343 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1344 |
|
"exposed command \"", cmdName, |
| 1345 |
|
"\" already exists", (char *) NULL); |
| 1346 |
|
return TCL_ERROR; |
| 1347 |
|
} |
| 1348 |
|
|
| 1349 |
|
/* |
| 1350 |
|
* Remove the hash entry for the command from the interpreter hidden |
| 1351 |
|
* command table. |
| 1352 |
|
*/ |
| 1353 |
|
|
| 1354 |
|
if (cmdPtr->hPtr != NULL) { |
| 1355 |
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
| 1356 |
|
cmdPtr->hPtr = NULL; |
| 1357 |
|
} |
| 1358 |
|
|
| 1359 |
|
/* |
| 1360 |
|
* Now link the hash table entry with the command structure. |
| 1361 |
|
* This is like creating a new command, so deal with any shadowing |
| 1362 |
|
* of commands in the global namespace. |
| 1363 |
|
*/ |
| 1364 |
|
|
| 1365 |
|
cmdPtr->hPtr = hPtr; |
| 1366 |
|
|
| 1367 |
|
Tcl_SetHashValue(hPtr, (ClientData) cmdPtr); |
| 1368 |
|
|
| 1369 |
|
/* |
| 1370 |
|
* Not needed as we are only in the global namespace |
| 1371 |
|
* (but would be needed again if we supported namespace command hiding) |
| 1372 |
|
* |
| 1373 |
|
* TclResetShadowedCmdRefs(interp, cmdPtr); |
| 1374 |
|
*/ |
| 1375 |
|
|
| 1376 |
|
|
| 1377 |
|
/* |
| 1378 |
|
* If the command being exposed has a compile procedure, increment |
| 1379 |
|
* interpreter's compileEpoch to invalidate its compiled code. This |
| 1380 |
|
* makes sure that we don't later try to execute old code compiled |
| 1381 |
|
* assuming the command is hidden. This field is checked in Tcl_EvalObj |
| 1382 |
|
* and ObjInterpProc, and code whose compilation epoch doesn't match is |
| 1383 |
|
* recompiled. |
| 1384 |
|
*/ |
| 1385 |
|
|
| 1386 |
|
if (cmdPtr->compileProc != NULL) { |
| 1387 |
|
iPtr->compileEpoch++; |
| 1388 |
|
} |
| 1389 |
|
return TCL_OK; |
| 1390 |
|
} |
| 1391 |
|
|
| 1392 |
|
/* |
| 1393 |
|
*---------------------------------------------------------------------- |
| 1394 |
|
* |
| 1395 |
|
* Tcl_CreateCommand -- |
| 1396 |
|
* |
| 1397 |
|
* Define a new command in a command table. |
| 1398 |
|
* |
| 1399 |
|
* Results: |
| 1400 |
|
* The return value is a token for the command, which can |
| 1401 |
|
* be used in future calls to Tcl_GetCommandName. |
| 1402 |
|
* |
| 1403 |
|
* Side effects: |
| 1404 |
|
* If a command named cmdName already exists for interp, it is deleted. |
| 1405 |
|
* In the future, when cmdName is seen as the name of a command by |
| 1406 |
|
* Tcl_Eval, proc will be called. To support the bytecode interpreter, |
| 1407 |
|
* the command is created with a wrapper Tcl_ObjCmdProc |
| 1408 |
|
* (TclInvokeStringCommand) that eventially calls proc. When the |
| 1409 |
|
* command is deleted from the table, deleteProc will be called. |
| 1410 |
|
* See the manual entry for details on the calling sequence. |
| 1411 |
|
* |
| 1412 |
|
*---------------------------------------------------------------------- |
| 1413 |
|
*/ |
| 1414 |
|
|
| 1415 |
|
Tcl_Command |
| 1416 |
|
Tcl_CreateCommand(interp, cmdName, proc, clientData, deleteProc) |
| 1417 |
|
Tcl_Interp *interp; /* Token for command interpreter returned by |
| 1418 |
|
* a previous call to Tcl_CreateInterp. */ |
| 1419 |
|
char *cmdName; /* Name of command. If it contains namespace |
| 1420 |
|
* qualifiers, the new command is put in the |
| 1421 |
|
* specified namespace; otherwise it is put |
| 1422 |
|
* in the global namespace. */ |
| 1423 |
|
Tcl_CmdProc *proc; /* Procedure to associate with cmdName. */ |
| 1424 |
|
ClientData clientData; /* Arbitrary value passed to string proc. */ |
| 1425 |
|
Tcl_CmdDeleteProc *deleteProc; |
| 1426 |
|
/* If not NULL, gives a procedure to call |
| 1427 |
|
* when this command is deleted. */ |
| 1428 |
|
{ |
| 1429 |
|
Interp *iPtr = (Interp *) interp; |
| 1430 |
|
ImportRef *oldRefPtr = NULL; |
| 1431 |
|
Namespace *nsPtr, *dummy1, *dummy2; |
| 1432 |
|
Command *cmdPtr, *refCmdPtr; |
| 1433 |
|
Tcl_HashEntry *hPtr; |
| 1434 |
|
char *tail; |
| 1435 |
|
int new; |
| 1436 |
|
ImportedCmdData *dataPtr; |
| 1437 |
|
|
| 1438 |
|
if (iPtr->flags & DELETED) { |
| 1439 |
|
/* |
| 1440 |
|
* The interpreter is being deleted. Don't create any new |
| 1441 |
|
* commands; it's not safe to muck with the interpreter anymore. |
| 1442 |
|
*/ |
| 1443 |
|
|
| 1444 |
|
return (Tcl_Command) NULL; |
| 1445 |
|
} |
| 1446 |
|
|
| 1447 |
|
/* |
| 1448 |
|
* Determine where the command should reside. If its name contains |
| 1449 |
|
* namespace qualifiers, we put it in the specified namespace; |
| 1450 |
|
* otherwise, we always put it in the global namespace. |
| 1451 |
|
*/ |
| 1452 |
|
|
| 1453 |
|
if (strstr(cmdName, "::") != NULL) { |
| 1454 |
|
TclGetNamespaceForQualName(interp, cmdName, (Namespace *) NULL, |
| 1455 |
|
CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail); |
| 1456 |
|
if ((nsPtr == NULL) || (tail == NULL)) { |
| 1457 |
|
return (Tcl_Command) NULL; |
| 1458 |
|
} |
| 1459 |
|
} else { |
| 1460 |
|
nsPtr = iPtr->globalNsPtr; |
| 1461 |
|
tail = cmdName; |
| 1462 |
|
} |
| 1463 |
|
|
| 1464 |
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
| 1465 |
|
if (!new) { |
| 1466 |
|
/* |
| 1467 |
|
* Command already exists. Delete the old one. |
| 1468 |
|
* Be careful to preserve any existing import links so we can |
| 1469 |
|
* restore them down below. That way, you can redefine a |
| 1470 |
|
* command and its import status will remain intact. |
| 1471 |
|
*/ |
| 1472 |
|
|
| 1473 |
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
| 1474 |
|
oldRefPtr = cmdPtr->importRefPtr; |
| 1475 |
|
cmdPtr->importRefPtr = NULL; |
| 1476 |
|
|
| 1477 |
|
Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); |
| 1478 |
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
| 1479 |
|
if (!new) { |
| 1480 |
|
/* |
| 1481 |
|
* If the deletion callback recreated the command, just throw |
| 1482 |
|
* away the new command (if we try to delete it again, we |
| 1483 |
|
* could get stuck in an infinite loop). |
| 1484 |
|
*/ |
| 1485 |
|
|
| 1486 |
|
ckfree((char*) Tcl_GetHashValue(hPtr)); |
| 1487 |
|
} |
| 1488 |
|
} |
| 1489 |
|
cmdPtr = (Command *) ckalloc(sizeof(Command)); |
| 1490 |
|
Tcl_SetHashValue(hPtr, cmdPtr); |
| 1491 |
|
cmdPtr->hPtr = hPtr; |
| 1492 |
|
cmdPtr->nsPtr = nsPtr; |
| 1493 |
|
cmdPtr->refCount = 1; |
| 1494 |
|
cmdPtr->cmdEpoch = 0; |
| 1495 |
|
cmdPtr->compileProc = (CompileProc *) NULL; |
| 1496 |
|
cmdPtr->objProc = TclInvokeStringCommand; |
| 1497 |
|
cmdPtr->objClientData = (ClientData) cmdPtr; |
| 1498 |
|
cmdPtr->proc = proc; |
| 1499 |
|
cmdPtr->clientData = clientData; |
| 1500 |
|
cmdPtr->deleteProc = deleteProc; |
| 1501 |
|
cmdPtr->deleteData = clientData; |
| 1502 |
|
cmdPtr->deleted = 0; |
| 1503 |
|
cmdPtr->importRefPtr = NULL; |
| 1504 |
|
|
| 1505 |
|
/* |
| 1506 |
|
* Plug in any existing import references found above. Be sure |
| 1507 |
|
* to update all of these references to point to the new command. |
| 1508 |
|
*/ |
| 1509 |
|
|
| 1510 |
|
if (oldRefPtr != NULL) { |
| 1511 |
|
cmdPtr->importRefPtr = oldRefPtr; |
| 1512 |
|
while (oldRefPtr != NULL) { |
| 1513 |
|
refCmdPtr = oldRefPtr->importedCmdPtr; |
| 1514 |
|
dataPtr = (ImportedCmdData*)refCmdPtr->objClientData; |
| 1515 |
|
dataPtr->realCmdPtr = cmdPtr; |
| 1516 |
|
oldRefPtr = oldRefPtr->nextPtr; |
| 1517 |
|
} |
| 1518 |
|
} |
| 1519 |
|
|
| 1520 |
|
/* |
| 1521 |
|
* We just created a command, so in its namespace and all of its parent |
| 1522 |
|
* namespaces, it may shadow global commands with the same name. If any |
| 1523 |
|
* shadowed commands are found, invalidate all cached command references |
| 1524 |
|
* in the affected namespaces. |
| 1525 |
|
*/ |
| 1526 |
|
|
| 1527 |
|
TclResetShadowedCmdRefs(interp, cmdPtr); |
| 1528 |
|
return (Tcl_Command) cmdPtr; |
| 1529 |
|
} |
| 1530 |
|
|
| 1531 |
|
/* |
| 1532 |
|
*---------------------------------------------------------------------- |
| 1533 |
|
* |
| 1534 |
|
* Tcl_CreateObjCommand -- |
| 1535 |
|
* |
| 1536 |
|
* Define a new object-based command in a command table. |
| 1537 |
|
* |
| 1538 |
|
* Results: |
| 1539 |
|
* The return value is a token for the command, which can |
| 1540 |
|
* be used in future calls to Tcl_GetCommandName. |
| 1541 |
|
* |
| 1542 |
|
* Side effects: |
| 1543 |
|
* If no command named "cmdName" already exists for interp, one is |
| 1544 |
|
* created. Otherwise, if a command does exist, then if the |
| 1545 |
|
* object-based Tcl_ObjCmdProc is TclInvokeStringCommand, we assume |
| 1546 |
|
* Tcl_CreateCommand was called previously for the same command and |
| 1547 |
|
* just set its Tcl_ObjCmdProc to the argument "proc"; otherwise, we |
| 1548 |
|
* delete the old command. |
| 1549 |
|
* |
| 1550 |
|
* In the future, during bytecode evaluation when "cmdName" is seen as |
| 1551 |
|
* the name of a command by Tcl_EvalObj or Tcl_Eval, the object-based |
| 1552 |
|
* Tcl_ObjCmdProc proc will be called. When the command is deleted from |
| 1553 |
|
* the table, deleteProc will be called. See the manual entry for |
| 1554 |
|
* details on the calling sequence. |
| 1555 |
|
* |
| 1556 |
|
*---------------------------------------------------------------------- |
| 1557 |
|
*/ |
| 1558 |
|
|
| 1559 |
|
Tcl_Command |
| 1560 |
|
Tcl_CreateObjCommand(interp, cmdName, proc, clientData, deleteProc) |
| 1561 |
|
Tcl_Interp *interp; /* Token for command interpreter (returned |
| 1562 |
|
* by previous call to Tcl_CreateInterp). */ |
| 1563 |
|
char *cmdName; /* Name of command. If it contains namespace |
| 1564 |
|
* qualifiers, the new command is put in the |
| 1565 |
|
* specified namespace; otherwise it is put |
| 1566 |
|
* in the global namespace. */ |
| 1567 |
|
Tcl_ObjCmdProc *proc; /* Object-based procedure to associate with |
| 1568 |
|
* name. */ |
| 1569 |
|
ClientData clientData; /* Arbitrary value to pass to object |
| 1570 |
|
* procedure. */ |
| 1571 |
|
Tcl_CmdDeleteProc *deleteProc; |
| 1572 |
|
/* If not NULL, gives a procedure to call |
| 1573 |
|
* when this command is deleted. */ |
| 1574 |
|
{ |
| 1575 |
|
Interp *iPtr = (Interp *) interp; |
| 1576 |
|
ImportRef *oldRefPtr = NULL; |
| 1577 |
|
Namespace *nsPtr, *dummy1, *dummy2; |
| 1578 |
|
Command *cmdPtr, *refCmdPtr; |
| 1579 |
|
Tcl_HashEntry *hPtr; |
| 1580 |
|
char *tail; |
| 1581 |
|
int new; |
| 1582 |
|
ImportedCmdData *dataPtr; |
| 1583 |
|
|
| 1584 |
|
if (iPtr->flags & DELETED) { |
| 1585 |
|
/* |
| 1586 |
|
* The interpreter is being deleted. Don't create any new |
| 1587 |
|
* commands; it's not safe to muck with the interpreter anymore. |
| 1588 |
|
*/ |
| 1589 |
|
|
| 1590 |
|
return (Tcl_Command) NULL; |
| 1591 |
|
} |
| 1592 |
|
|
| 1593 |
|
/* |
| 1594 |
|
* Determine where the command should reside. If its name contains |
| 1595 |
|
* namespace qualifiers, we put it in the specified namespace; |
| 1596 |
|
* otherwise, we always put it in the global namespace. |
| 1597 |
|
*/ |
| 1598 |
|
|
| 1599 |
|
if (strstr(cmdName, "::") != NULL) { |
| 1600 |
|
TclGetNamespaceForQualName(interp, cmdName, (Namespace *) NULL, |
| 1601 |
|
CREATE_NS_IF_UNKNOWN, &nsPtr, &dummy1, &dummy2, &tail); |
| 1602 |
|
if ((nsPtr == NULL) || (tail == NULL)) { |
| 1603 |
|
return (Tcl_Command) NULL; |
| 1604 |
|
} |
| 1605 |
|
} else { |
| 1606 |
|
nsPtr = iPtr->globalNsPtr; |
| 1607 |
|
tail = cmdName; |
| 1608 |
|
} |
| 1609 |
|
|
| 1610 |
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
| 1611 |
|
if (!new) { |
| 1612 |
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
| 1613 |
|
|
| 1614 |
|
/* |
| 1615 |
|
* Command already exists. If its object-based Tcl_ObjCmdProc is |
| 1616 |
|
* TclInvokeStringCommand, we just set its Tcl_ObjCmdProc to the |
| 1617 |
|
* argument "proc". Otherwise, we delete the old command. |
| 1618 |
|
*/ |
| 1619 |
|
|
| 1620 |
|
if (cmdPtr->objProc == TclInvokeStringCommand) { |
| 1621 |
|
cmdPtr->objProc = proc; |
| 1622 |
|
cmdPtr->objClientData = clientData; |
| 1623 |
|
cmdPtr->deleteProc = deleteProc; |
| 1624 |
|
cmdPtr->deleteData = clientData; |
| 1625 |
|
return (Tcl_Command) cmdPtr; |
| 1626 |
|
} |
| 1627 |
|
|
| 1628 |
|
/* |
| 1629 |
|
* Otherwise, we delete the old command. Be careful to preserve |
| 1630 |
|
* any existing import links so we can restore them down below. |
| 1631 |
|
* That way, you can redefine a command and its import status |
| 1632 |
|
* will remain intact. |
| 1633 |
|
*/ |
| 1634 |
|
|
| 1635 |
|
oldRefPtr = cmdPtr->importRefPtr; |
| 1636 |
|
cmdPtr->importRefPtr = NULL; |
| 1637 |
|
|
| 1638 |
|
Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); |
| 1639 |
|
hPtr = Tcl_CreateHashEntry(&nsPtr->cmdTable, tail, &new); |
| 1640 |
|
if (!new) { |
| 1641 |
|
/* |
| 1642 |
|
* If the deletion callback recreated the command, just throw |
| 1643 |
|
* away the new command (if we try to delete it again, we |
| 1644 |
|
* could get stuck in an infinite loop). |
| 1645 |
|
*/ |
| 1646 |
|
|
| 1647 |
|
ckfree((char *) Tcl_GetHashValue(hPtr)); |
| 1648 |
|
} |
| 1649 |
|
} |
| 1650 |
|
cmdPtr = (Command *) ckalloc(sizeof(Command)); |
| 1651 |
|
Tcl_SetHashValue(hPtr, cmdPtr); |
| 1652 |
|
cmdPtr->hPtr = hPtr; |
| 1653 |
|
cmdPtr->nsPtr = nsPtr; |
| 1654 |
|
cmdPtr->refCount = 1; |
| 1655 |
|
cmdPtr->cmdEpoch = 0; |
| 1656 |
|
cmdPtr->compileProc = (CompileProc *) NULL; |
| 1657 |
|
cmdPtr->objProc = proc; |
| 1658 |
|
cmdPtr->objClientData = clientData; |
| 1659 |
|
cmdPtr->proc = TclInvokeObjectCommand; |
| 1660 |
|
cmdPtr->clientData = (ClientData) cmdPtr; |
| 1661 |
|
cmdPtr->deleteProc = deleteProc; |
| 1662 |
|
cmdPtr->deleteData = clientData; |
| 1663 |
|
cmdPtr->deleted = 0; |
| 1664 |
|
cmdPtr->importRefPtr = NULL; |
| 1665 |
|
|
| 1666 |
|
/* |
| 1667 |
|
* Plug in any existing import references found above. Be sure |
| 1668 |
|
* to update all of these references to point to the new command. |
| 1669 |
|
*/ |
| 1670 |
|
|
| 1671 |
|
if (oldRefPtr != NULL) { |
| 1672 |
|
cmdPtr->importRefPtr = oldRefPtr; |
| 1673 |
|
while (oldRefPtr != NULL) { |
| 1674 |
|
refCmdPtr = oldRefPtr->importedCmdPtr; |
| 1675 |
|
dataPtr = (ImportedCmdData*)refCmdPtr->objClientData; |
| 1676 |
|
dataPtr->realCmdPtr = cmdPtr; |
| 1677 |
|
oldRefPtr = oldRefPtr->nextPtr; |
| 1678 |
|
} |
| 1679 |
|
} |
| 1680 |
|
|
| 1681 |
|
/* |
| 1682 |
|
* We just created a command, so in its namespace and all of its parent |
| 1683 |
|
* namespaces, it may shadow global commands with the same name. If any |
| 1684 |
|
* shadowed commands are found, invalidate all cached command references |
| 1685 |
|
* in the affected namespaces. |
| 1686 |
|
*/ |
| 1687 |
|
|
| 1688 |
|
TclResetShadowedCmdRefs(interp, cmdPtr); |
| 1689 |
|
return (Tcl_Command) cmdPtr; |
| 1690 |
|
} |
| 1691 |
|
|
| 1692 |
|
/* |
| 1693 |
|
*---------------------------------------------------------------------- |
| 1694 |
|
* |
| 1695 |
|
* TclInvokeStringCommand -- |
| 1696 |
|
* |
| 1697 |
|
* "Wrapper" Tcl_ObjCmdProc used to call an existing string-based |
| 1698 |
|
* Tcl_CmdProc if no object-based procedure exists for a command. A |
| 1699 |
|
* pointer to this procedure is stored as the Tcl_ObjCmdProc in a |
| 1700 |
|
* Command structure. It simply turns around and calls the string |
| 1701 |
|
* Tcl_CmdProc in the Command structure. |
| 1702 |
|
* |
| 1703 |
|
* Results: |
| 1704 |
|
* A standard Tcl object result value. |
| 1705 |
|
* |
| 1706 |
|
* Side effects: |
| 1707 |
|
* Besides those side effects of the called Tcl_CmdProc, |
| 1708 |
|
* TclInvokeStringCommand allocates and frees storage. |
| 1709 |
|
* |
| 1710 |
|
*---------------------------------------------------------------------- |
| 1711 |
|
*/ |
| 1712 |
|
|
| 1713 |
|
int |
| 1714 |
|
TclInvokeStringCommand(clientData, interp, objc, objv) |
| 1715 |
|
ClientData clientData; /* Points to command's Command structure. */ |
| 1716 |
|
Tcl_Interp *interp; /* Current interpreter. */ |
| 1717 |
|
register int objc; /* Number of arguments. */ |
| 1718 |
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
| 1719 |
|
{ |
| 1720 |
|
register Command *cmdPtr = (Command *) clientData; |
| 1721 |
|
register int i; |
| 1722 |
|
int result; |
| 1723 |
|
|
| 1724 |
|
/* |
| 1725 |
|
* This procedure generates an argv array for the string arguments. It |
| 1726 |
|
* starts out with stack-allocated space but uses dynamically-allocated |
| 1727 |
|
* storage if needed. |
| 1728 |
|
*/ |
| 1729 |
|
|
| 1730 |
|
#define NUM_ARGS 20 |
| 1731 |
|
char *(argStorage[NUM_ARGS]); |
| 1732 |
|
char **argv = argStorage; |
| 1733 |
|
|
| 1734 |
|
/* |
| 1735 |
|
* Create the string argument array "argv". Make sure argv is large |
| 1736 |
|
* enough to hold the objc arguments plus 1 extra for the zero |
| 1737 |
|
* end-of-argv word. |
| 1738 |
|
*/ |
| 1739 |
|
|
| 1740 |
|
if ((objc + 1) > NUM_ARGS) { |
| 1741 |
|
argv = (char **) ckalloc((unsigned)(objc + 1) * sizeof(char *)); |
| 1742 |
|
} |
| 1743 |
|
|
| 1744 |
|
for (i = 0; i < objc; i++) { |
| 1745 |
|
argv[i] = Tcl_GetString(objv[i]); |
| 1746 |
|
} |
| 1747 |
|
argv[objc] = 0; |
| 1748 |
|
|
| 1749 |
|
/* |
| 1750 |
|
* Invoke the command's string-based Tcl_CmdProc. |
| 1751 |
|
*/ |
| 1752 |
|
|
| 1753 |
|
result = (*cmdPtr->proc)(cmdPtr->clientData, interp, objc, argv); |
| 1754 |
|
|
| 1755 |
|
/* |
| 1756 |
|
* Free the argv array if malloc'ed storage was used. |
| 1757 |
|
*/ |
| 1758 |
|
|
| 1759 |
|
if (argv != argStorage) { |
| 1760 |
|
ckfree((char *) argv); |
| 1761 |
|
} |
| 1762 |
|
return result; |
| 1763 |
|
#undef NUM_ARGS |
| 1764 |
|
} |
| 1765 |
|
|
| 1766 |
|
/* |
| 1767 |
|
*---------------------------------------------------------------------- |
| 1768 |
|
* |
| 1769 |
|
* TclInvokeObjectCommand -- |
| 1770 |
|
* |
| 1771 |
|
* "Wrapper" Tcl_CmdProc used to call an existing object-based |
| 1772 |
|
* Tcl_ObjCmdProc if no string-based procedure exists for a command. |
| 1773 |
|
* A pointer to this procedure is stored as the Tcl_CmdProc in a |
| 1774 |
|
* Command structure. It simply turns around and calls the object |
| 1775 |
|
* Tcl_ObjCmdProc in the Command structure. |
| 1776 |
|
* |
| 1777 |
|
* Results: |
| 1778 |
|
* A standard Tcl string result value. |
| 1779 |
|
* |
| 1780 |
|
* Side effects: |
| 1781 |
|
* Besides those side effects of the called Tcl_CmdProc, |
| 1782 |
|
* TclInvokeStringCommand allocates and frees storage. |
| 1783 |
|
* |
| 1784 |
|
*---------------------------------------------------------------------- |
| 1785 |
|
*/ |
| 1786 |
|
|
| 1787 |
|
int |
| 1788 |
|
TclInvokeObjectCommand(clientData, interp, argc, argv) |
| 1789 |
|
ClientData clientData; /* Points to command's Command structure. */ |
| 1790 |
|
Tcl_Interp *interp; /* Current interpreter. */ |
| 1791 |
|
int argc; /* Number of arguments. */ |
| 1792 |
|
register char **argv; /* Argument strings. */ |
| 1793 |
|
{ |
| 1794 |
|
Command *cmdPtr = (Command *) clientData; |
| 1795 |
|
register Tcl_Obj *objPtr; |
| 1796 |
|
register int i; |
| 1797 |
|
int length, result; |
| 1798 |
|
|
| 1799 |
|
/* |
| 1800 |
|
* This procedure generates an objv array for object arguments that hold |
| 1801 |
|
* the argv strings. It starts out with stack-allocated space but uses |
| 1802 |
|
* dynamically-allocated storage if needed. |
| 1803 |
|
*/ |
| 1804 |
|
|
| 1805 |
|
#define NUM_ARGS 20 |
| 1806 |
|
Tcl_Obj *(argStorage[NUM_ARGS]); |
| 1807 |
|
register Tcl_Obj **objv = argStorage; |
| 1808 |
|
|
| 1809 |
|
/* |
| 1810 |
|
* Create the object argument array "objv". Make sure objv is large |
| 1811 |
|
* enough to hold the objc arguments plus 1 extra for the zero |
| 1812 |
|
* end-of-objv word. |
| 1813 |
|
*/ |
| 1814 |
|
|
| 1815 |
|
if ((argc + 1) > NUM_ARGS) { |
| 1816 |
|
objv = (Tcl_Obj **) |
| 1817 |
|
ckalloc((unsigned)(argc + 1) * sizeof(Tcl_Obj *)); |
| 1818 |
|
} |
| 1819 |
|
|
| 1820 |
|
for (i = 0; i < argc; i++) { |
| 1821 |
|
length = strlen(argv[i]); |
| 1822 |
|
TclNewObj(objPtr); |
| 1823 |
|
TclInitStringRep(objPtr, argv[i], length); |
| 1824 |
|
Tcl_IncrRefCount(objPtr); |
| 1825 |
|
objv[i] = objPtr; |
| 1826 |
|
} |
| 1827 |
|
objv[argc] = 0; |
| 1828 |
|
|
| 1829 |
|
/* |
| 1830 |
|
* Invoke the command's object-based Tcl_ObjCmdProc. |
| 1831 |
|
*/ |
| 1832 |
|
|
| 1833 |
|
result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp, argc, objv); |
| 1834 |
|
|
| 1835 |
|
/* |
| 1836 |
|
* Move the interpreter's object result to the string result, |
| 1837 |
|
* then reset the object result. |
| 1838 |
|
*/ |
| 1839 |
|
|
| 1840 |
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
| 1841 |
|
TCL_VOLATILE); |
| 1842 |
|
|
| 1843 |
|
/* |
| 1844 |
|
* Decrement the ref counts for the argument objects created above, |
| 1845 |
|
* then free the objv array if malloc'ed storage was used. |
| 1846 |
|
*/ |
| 1847 |
|
|
| 1848 |
|
for (i = 0; i < argc; i++) { |
| 1849 |
|
objPtr = objv[i]; |
| 1850 |
|
Tcl_DecrRefCount(objPtr); |
| 1851 |
|
} |
| 1852 |
|
if (objv != argStorage) { |
| 1853 |
|
ckfree((char *) objv); |
| 1854 |
|
} |
| 1855 |
|
return result; |
| 1856 |
|
#undef NUM_ARGS |
| 1857 |
|
} |
| 1858 |
|
|
| 1859 |
|
/* |
| 1860 |
|
*---------------------------------------------------------------------- |
| 1861 |
|
* |
| 1862 |
|
* TclRenameCommand -- |
| 1863 |
|
* |
| 1864 |
|
* Called to give an existing Tcl command a different name. Both the |
| 1865 |
|
* old command name and the new command name can have "::" namespace |
| 1866 |
|
* qualifiers. If the new command has a different namespace context, |
| 1867 |
|
* the command will be moved to that namespace and will execute in |
| 1868 |
|
* the context of that new namespace. |
| 1869 |
|
* |
| 1870 |
|
* If the new command name is NULL or the null string, the command is |
| 1871 |
|
* deleted. |
| 1872 |
|
* |
| 1873 |
|
* Results: |
| 1874 |
|
* Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong. |
| 1875 |
|
* |
| 1876 |
|
* Side effects: |
| 1877 |
|
* If anything goes wrong, an error message is returned in the |
| 1878 |
|
* interpreter's result object. |
| 1879 |
|
* |
| 1880 |
|
*---------------------------------------------------------------------- |
| 1881 |
|
*/ |
| 1882 |
|
|
| 1883 |
|
int |
| 1884 |
|
TclRenameCommand(interp, oldName, newName) |
| 1885 |
|
Tcl_Interp *interp; /* Current interpreter. */ |
| 1886 |
|
char *oldName; /* Existing command name. */ |
| 1887 |
|
char *newName; /* New command name. */ |
| 1888 |
|
{ |
| 1889 |
|
Interp *iPtr = (Interp *) interp; |
| 1890 |
|
char *newTail; |
| 1891 |
|
Namespace *cmdNsPtr, *newNsPtr, *dummy1, *dummy2; |
| 1892 |
|
Tcl_Command cmd; |
| 1893 |
|
Command *cmdPtr; |
| 1894 |
|
Tcl_HashEntry *hPtr, *oldHPtr; |
| 1895 |
|
int new, result; |
| 1896 |
|
|
| 1897 |
|
/* |
| 1898 |
|
* Find the existing command. An error is returned if cmdName can't |
| 1899 |
|
* be found. |
| 1900 |
|
*/ |
| 1901 |
|
|
| 1902 |
|
cmd = Tcl_FindCommand(interp, oldName, (Tcl_Namespace *) NULL, |
| 1903 |
|
/*flags*/ 0); |
| 1904 |
|
cmdPtr = (Command *) cmd; |
| 1905 |
|
if (cmdPtr == NULL) { |
| 1906 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "can't ", |
| 1907 |
|
((newName == NULL)||(*newName == '\0'))? "delete":"rename", |
| 1908 |
|
" \"", oldName, "\": command doesn't exist", (char *) NULL); |
| 1909 |
|
return TCL_ERROR; |
| 1910 |
|
} |
| 1911 |
|
cmdNsPtr = cmdPtr->nsPtr; |
| 1912 |
|
|
| 1913 |
|
/* |
| 1914 |
|
* If the new command name is NULL or empty, delete the command. Do this |
| 1915 |
|
* with Tcl_DeleteCommandFromToken, since we already have the command. |
| 1916 |
|
*/ |
| 1917 |
|
|
| 1918 |
|
if ((newName == NULL) || (*newName == '\0')) { |
| 1919 |
|
Tcl_DeleteCommandFromToken(interp, cmd); |
| 1920 |
|
return TCL_OK; |
| 1921 |
|
} |
| 1922 |
|
|
| 1923 |
|
/* |
| 1924 |
|
* Make sure that the destination command does not already exist. |
| 1925 |
|
* The rename operation is like creating a command, so we should |
| 1926 |
|
* automatically create the containing namespaces just like |
| 1927 |
|
* Tcl_CreateCommand would. |
| 1928 |
|
*/ |
| 1929 |
|
|
| 1930 |
|
TclGetNamespaceForQualName(interp, newName, (Namespace *) NULL, |
| 1931 |
|
CREATE_NS_IF_UNKNOWN, &newNsPtr, &dummy1, &dummy2, &newTail); |
| 1932 |
|
|
| 1933 |
|
if ((newNsPtr == NULL) || (newTail == NULL)) { |
| 1934 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1935 |
|
"can't rename to \"", newName, "\": bad command name", |
| 1936 |
|
(char *) NULL); |
| 1937 |
|
return TCL_ERROR; |
| 1938 |
|
} |
| 1939 |
|
if (Tcl_FindHashEntry(&newNsPtr->cmdTable, newTail) != NULL) { |
| 1940 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 1941 |
|
"can't rename to \"", newName, |
| 1942 |
|
"\": command already exists", (char *) NULL); |
| 1943 |
|
return TCL_ERROR; |
| 1944 |
|
} |
| 1945 |
|
|
| 1946 |
|
|
| 1947 |
|
/* |
| 1948 |
|
* Warning: any changes done in the code here are likely |
| 1949 |
|
* to be needed in Tcl_HideCommand() code too. |
| 1950 |
|
* (until the common parts are extracted out) --dl |
| 1951 |
|
*/ |
| 1952 |
|
|
| 1953 |
|
/* |
| 1954 |
|
* Put the command in the new namespace so we can check for an alias |
| 1955 |
|
* loop. Since we are adding a new command to a namespace, we must |
| 1956 |
|
* handle any shadowing of the global commands that this might create. |
| 1957 |
|
*/ |
| 1958 |
|
|
| 1959 |
|
oldHPtr = cmdPtr->hPtr; |
| 1960 |
|
hPtr = Tcl_CreateHashEntry(&newNsPtr->cmdTable, newTail, &new); |
| 1961 |
|
Tcl_SetHashValue(hPtr, (ClientData) cmdPtr); |
| 1962 |
|
cmdPtr->hPtr = hPtr; |
| 1963 |
|
cmdPtr->nsPtr = newNsPtr; |
| 1964 |
|
TclResetShadowedCmdRefs(interp, cmdPtr); |
| 1965 |
|
|
| 1966 |
|
/* |
| 1967 |
|
* Now check for an alias loop. If we detect one, put everything back |
| 1968 |
|
* the way it was and report the error. |
| 1969 |
|
*/ |
| 1970 |
|
|
| 1971 |
|
result = TclPreventAliasLoop(interp, interp, (Tcl_Command) cmdPtr); |
| 1972 |
|
if (result != TCL_OK) { |
| 1973 |
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
| 1974 |
|
cmdPtr->hPtr = oldHPtr; |
| 1975 |
|
cmdPtr->nsPtr = cmdNsPtr; |
| 1976 |
|
return result; |
| 1977 |
|
} |
| 1978 |
|
|
| 1979 |
|
/* |
| 1980 |
|
* The new command name is okay, so remove the command from its |
| 1981 |
|
* current namespace. This is like deleting the command, so bump |
| 1982 |
|
* the cmdEpoch to invalidate any cached references to the command. |
| 1983 |
|
*/ |
| 1984 |
|
|
| 1985 |
|
Tcl_DeleteHashEntry(oldHPtr); |
| 1986 |
|
cmdPtr->cmdEpoch++; |
| 1987 |
|
|
| 1988 |
|
/* |
| 1989 |
|
* If the command being renamed has a compile procedure, increment the |
| 1990 |
|
* interpreter's compileEpoch to invalidate its compiled code. This |
| 1991 |
|
* makes sure that we don't later try to execute old code compiled for |
| 1992 |
|
* the now-renamed command. |
| 1993 |
|
*/ |
| 1994 |
|
|
| 1995 |
|
if (cmdPtr->compileProc != NULL) { |
| 1996 |
|
iPtr->compileEpoch++; |
| 1997 |
|
} |
| 1998 |
|
|
| 1999 |
|
return TCL_OK; |
| 2000 |
|
} |
| 2001 |
|
|
| 2002 |
|
/* |
| 2003 |
|
*---------------------------------------------------------------------- |
| 2004 |
|
* |
| 2005 |
|
* Tcl_SetCommandInfo -- |
| 2006 |
|
* |
| 2007 |
|
* Modifies various information about a Tcl command. Note that |
| 2008 |
|
* this procedure will not change a command's namespace; use |
| 2009 |
|
* Tcl_RenameCommand to do that. Also, the isNativeObjectProc |
| 2010 |
|
* member of *infoPtr is ignored. |
| 2011 |
|
* |
| 2012 |
|
* Results: |
| 2013 |
|
* If cmdName exists in interp, then the information at *infoPtr |
| 2014 |
|
* is stored with the command in place of the current information |
| 2015 |
|
* and 1 is returned. If the command doesn't exist then 0 is |
| 2016 |
|
* returned. |
| 2017 |
|
* |
| 2018 |
|
* Side effects: |
| 2019 |
|
* None. |
| 2020 |
|
* |
| 2021 |
|
*---------------------------------------------------------------------- |
| 2022 |
|
*/ |
| 2023 |
|
|
| 2024 |
|
int |
| 2025 |
|
Tcl_SetCommandInfo(interp, cmdName, infoPtr) |
| 2026 |
|
Tcl_Interp *interp; /* Interpreter in which to look |
| 2027 |
|
* for command. */ |
| 2028 |
|
char *cmdName; /* Name of desired command. */ |
| 2029 |
|
Tcl_CmdInfo *infoPtr; /* Where to find information |
| 2030 |
|
* to store in the command. */ |
| 2031 |
|
{ |
| 2032 |
|
Tcl_Command cmd; |
| 2033 |
|
Command *cmdPtr; |
| 2034 |
|
|
| 2035 |
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
| 2036 |
|
/*flags*/ 0); |
| 2037 |
|
if (cmd == (Tcl_Command) NULL) { |
| 2038 |
|
return 0; |
| 2039 |
|
} |
| 2040 |
|
|
| 2041 |
|
/* |
| 2042 |
|
* The isNativeObjectProc and nsPtr members of *infoPtr are ignored. |
| 2043 |
|
*/ |
| 2044 |
|
|
| 2045 |
|
cmdPtr = (Command *) cmd; |
| 2046 |
|
cmdPtr->proc = infoPtr->proc; |
| 2047 |
|
cmdPtr->clientData = infoPtr->clientData; |
| 2048 |
|
if (infoPtr->objProc == (Tcl_ObjCmdProc *) NULL) { |
| 2049 |
|
cmdPtr->objProc = TclInvokeStringCommand; |
| 2050 |
|
cmdPtr->objClientData = (ClientData) cmdPtr; |
| 2051 |
|
} else { |
| 2052 |
|
cmdPtr->objProc = infoPtr->objProc; |
| 2053 |
|
cmdPtr->objClientData = infoPtr->objClientData; |
| 2054 |
|
} |
| 2055 |
|
cmdPtr->deleteProc = infoPtr->deleteProc; |
| 2056 |
|
cmdPtr->deleteData = infoPtr->deleteData; |
| 2057 |
|
return 1; |
| 2058 |
|
} |
| 2059 |
|
|
| 2060 |
|
/* |
| 2061 |
|
*---------------------------------------------------------------------- |
| 2062 |
|
* |
| 2063 |
|
* Tcl_GetCommandInfo -- |
| 2064 |
|
* |
| 2065 |
|
* Returns various information about a Tcl command. |
| 2066 |
|
* |
| 2067 |
|
* Results: |
| 2068 |
|
* If cmdName exists in interp, then *infoPtr is modified to |
| 2069 |
|
* hold information about cmdName and 1 is returned. If the |
| 2070 |
|
* command doesn't exist then 0 is returned and *infoPtr isn't |
| 2071 |
|
* modified. |
| 2072 |
|
* |
| 2073 |
|
* Side effects: |
| 2074 |
|
* None. |
| 2075 |
|
* |
| 2076 |
|
*---------------------------------------------------------------------- |
| 2077 |
|
*/ |
| 2078 |
|
|
| 2079 |
|
int |
| 2080 |
|
Tcl_GetCommandInfo(interp, cmdName, infoPtr) |
| 2081 |
|
Tcl_Interp *interp; /* Interpreter in which to look |
| 2082 |
|
* for command. */ |
| 2083 |
|
char *cmdName; /* Name of desired command. */ |
| 2084 |
|
Tcl_CmdInfo *infoPtr; /* Where to store information about |
| 2085 |
|
* command. */ |
| 2086 |
|
{ |
| 2087 |
|
Tcl_Command cmd; |
| 2088 |
|
Command *cmdPtr; |
| 2089 |
|
|
| 2090 |
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
| 2091 |
|
/*flags*/ 0); |
| 2092 |
|
if (cmd == (Tcl_Command) NULL) { |
| 2093 |
|
return 0; |
| 2094 |
|
} |
| 2095 |
|
|
| 2096 |
|
/* |
| 2097 |
|
* Set isNativeObjectProc 1 if objProc was registered by a call to |
| 2098 |
|
* Tcl_CreateObjCommand. Otherwise set it to 0. |
| 2099 |
|
*/ |
| 2100 |
|
|
| 2101 |
|
cmdPtr = (Command *) cmd; |
| 2102 |
|
infoPtr->isNativeObjectProc = |
| 2103 |
|
(cmdPtr->objProc != TclInvokeStringCommand); |
| 2104 |
|
infoPtr->objProc = cmdPtr->objProc; |
| 2105 |
|
infoPtr->objClientData = cmdPtr->objClientData; |
| 2106 |
|
infoPtr->proc = cmdPtr->proc; |
| 2107 |
|
infoPtr->clientData = cmdPtr->clientData; |
| 2108 |
|
infoPtr->deleteProc = cmdPtr->deleteProc; |
| 2109 |
|
infoPtr->deleteData = cmdPtr->deleteData; |
| 2110 |
|
infoPtr->namespacePtr = (Tcl_Namespace *) cmdPtr->nsPtr; |
| 2111 |
|
return 1; |
| 2112 |
|
} |
| 2113 |
|
|
| 2114 |
|
/* |
| 2115 |
|
*---------------------------------------------------------------------- |
| 2116 |
|
* |
| 2117 |
|
* Tcl_GetCommandName -- |
| 2118 |
|
* |
| 2119 |
|
* Given a token returned by Tcl_CreateCommand, this procedure |
| 2120 |
|
* returns the current name of the command (which may have changed |
| 2121 |
|
* due to renaming). |
| 2122 |
|
* |
| 2123 |
|
* Results: |
| 2124 |
|
* The return value is the name of the given command. |
| 2125 |
|
* |
| 2126 |
|
* Side effects: |
| 2127 |
|
* None. |
| 2128 |
|
* |
| 2129 |
|
*---------------------------------------------------------------------- |
| 2130 |
|
*/ |
| 2131 |
|
|
| 2132 |
|
char * |
| 2133 |
|
Tcl_GetCommandName(interp, command) |
| 2134 |
|
Tcl_Interp *interp; /* Interpreter containing the command. */ |
| 2135 |
|
Tcl_Command command; /* Token for command returned by a previous |
| 2136 |
|
* call to Tcl_CreateCommand. The command |
| 2137 |
|
* must not have been deleted. */ |
| 2138 |
|
{ |
| 2139 |
|
Command *cmdPtr = (Command *) command; |
| 2140 |
|
|
| 2141 |
|
if ((cmdPtr == NULL) || (cmdPtr->hPtr == NULL)) { |
| 2142 |
|
|
| 2143 |
|
/* |
| 2144 |
|
* This should only happen if command was "created" after the |
| 2145 |
|
* interpreter began to be deleted, so there isn't really any |
| 2146 |
|
* command. Just return an empty string. |
| 2147 |
|
*/ |
| 2148 |
|
|
| 2149 |
|
return ""; |
| 2150 |
|
} |
| 2151 |
|
return Tcl_GetHashKey(cmdPtr->hPtr->tablePtr, cmdPtr->hPtr); |
| 2152 |
|
} |
| 2153 |
|
|
| 2154 |
|
/* |
| 2155 |
|
*---------------------------------------------------------------------- |
| 2156 |
|
* |
| 2157 |
|
* Tcl_GetCommandFullName -- |
| 2158 |
|
* |
| 2159 |
|
* Given a token returned by, e.g., Tcl_CreateCommand or |
| 2160 |
|
* Tcl_FindCommand, this procedure appends to an object the command's |
| 2161 |
|
* full name, qualified by a sequence of parent namespace names. The |
| 2162 |
|
* command's fully-qualified name may have changed due to renaming. |
| 2163 |
|
* |
| 2164 |
|
* Results: |
| 2165 |
|
* None. |
| 2166 |
|
* |
| 2167 |
|
* Side effects: |
| 2168 |
|
* The command's fully-qualified name is appended to the string |
| 2169 |
|
* representation of objPtr. |
| 2170 |
|
* |
| 2171 |
|
*---------------------------------------------------------------------- |
| 2172 |
|
*/ |
| 2173 |
|
|
| 2174 |
|
void |
| 2175 |
|
Tcl_GetCommandFullName(interp, command, objPtr) |
| 2176 |
|
Tcl_Interp *interp; /* Interpreter containing the command. */ |
| 2177 |
|
Tcl_Command command; /* Token for command returned by a previous |
| 2178 |
|
* call to Tcl_CreateCommand. The command |
| 2179 |
|
* must not have been deleted. */ |
| 2180 |
|
Tcl_Obj *objPtr; /* Points to the object onto which the |
| 2181 |
|
* command's full name is appended. */ |
| 2182 |
|
|
| 2183 |
|
{ |
| 2184 |
|
Interp *iPtr = (Interp *) interp; |
| 2185 |
|
register Command *cmdPtr = (Command *) command; |
| 2186 |
|
char *name; |
| 2187 |
|
|
| 2188 |
|
/* |
| 2189 |
|
* Add the full name of the containing namespace, followed by the "::" |
| 2190 |
|
* separator, and the command name. |
| 2191 |
|
*/ |
| 2192 |
|
|
| 2193 |
|
if (cmdPtr != NULL) { |
| 2194 |
|
if (cmdPtr->nsPtr != NULL) { |
| 2195 |
|
Tcl_AppendToObj(objPtr, cmdPtr->nsPtr->fullName, -1); |
| 2196 |
|
if (cmdPtr->nsPtr != iPtr->globalNsPtr) { |
| 2197 |
|
Tcl_AppendToObj(objPtr, "::", 2); |
| 2198 |
|
} |
| 2199 |
|
} |
| 2200 |
|
if (cmdPtr->hPtr != NULL) { |
| 2201 |
|
name = Tcl_GetHashKey(cmdPtr->hPtr->tablePtr, cmdPtr->hPtr); |
| 2202 |
|
Tcl_AppendToObj(objPtr, name, -1); |
| 2203 |
|
} |
| 2204 |
|
} |
| 2205 |
|
} |
| 2206 |
|
|
| 2207 |
|
/* |
| 2208 |
|
*---------------------------------------------------------------------- |
| 2209 |
|
* |
| 2210 |
|
* Tcl_DeleteCommand -- |
| 2211 |
|
* |
| 2212 |
|
* Remove the given command from the given interpreter. |
| 2213 |
|
* |
| 2214 |
|
* Results: |
| 2215 |
|
* 0 is returned if the command was deleted successfully. |
| 2216 |
|
* -1 is returned if there didn't exist a command by that name. |
| 2217 |
|
* |
| 2218 |
|
* Side effects: |
| 2219 |
|
* cmdName will no longer be recognized as a valid command for |
| 2220 |
|
* interp. |
| 2221 |
|
* |
| 2222 |
|
*---------------------------------------------------------------------- |
| 2223 |
|
*/ |
| 2224 |
|
|
| 2225 |
|
int |
| 2226 |
|
Tcl_DeleteCommand(interp, cmdName) |
| 2227 |
|
Tcl_Interp *interp; /* Token for command interpreter (returned |
| 2228 |
|
* by a previous Tcl_CreateInterp call). */ |
| 2229 |
|
char *cmdName; /* Name of command to remove. */ |
| 2230 |
|
{ |
| 2231 |
|
Tcl_Command cmd; |
| 2232 |
|
|
| 2233 |
|
/* |
| 2234 |
|
* Find the desired command and delete it. |
| 2235 |
|
*/ |
| 2236 |
|
|
| 2237 |
|
cmd = Tcl_FindCommand(interp, cmdName, (Tcl_Namespace *) NULL, |
| 2238 |
|
/*flags*/ 0); |
| 2239 |
|
if (cmd == (Tcl_Command) NULL) { |
| 2240 |
|
return -1; |
| 2241 |
|
} |
| 2242 |
|
return Tcl_DeleteCommandFromToken(interp, cmd); |
| 2243 |
|
} |
| 2244 |
|
|
| 2245 |
|
/* |
| 2246 |
|
*---------------------------------------------------------------------- |
| 2247 |
|
* |
| 2248 |
|
* Tcl_DeleteCommandFromToken -- |
| 2249 |
|
* |
| 2250 |
|
* Removes the given command from the given interpreter. This procedure |
| 2251 |
|
* resembles Tcl_DeleteCommand, but takes a Tcl_Command token instead |
| 2252 |
|
* of a command name for efficiency. |
| 2253 |
|
* |
| 2254 |
|
* Results: |
| 2255 |
|
* 0 is returned if the command was deleted successfully. |
| 2256 |
|
* -1 is returned if there didn't exist a command by that name. |
| 2257 |
|
* |
| 2258 |
|
* Side effects: |
| 2259 |
|
* The command specified by "cmd" will no longer be recognized as a |
| 2260 |
|
* valid command for "interp". |
| 2261 |
|
* |
| 2262 |
|
*---------------------------------------------------------------------- |
| 2263 |
|
*/ |
| 2264 |
|
|
| 2265 |
|
int |
| 2266 |
|
Tcl_DeleteCommandFromToken(interp, cmd) |
| 2267 |
|
Tcl_Interp *interp; /* Token for command interpreter returned by |
| 2268 |
|
* a previous call to Tcl_CreateInterp. */ |
| 2269 |
|
Tcl_Command cmd; /* Token for command to delete. */ |
| 2270 |
|
{ |
| 2271 |
|
Interp *iPtr = (Interp *) interp; |
| 2272 |
|
Command *cmdPtr = (Command *) cmd; |
| 2273 |
|
ImportRef *refPtr, *nextRefPtr; |
| 2274 |
|
Tcl_Command importCmd; |
| 2275 |
|
|
| 2276 |
|
/* |
| 2277 |
|
* The code here is tricky. We can't delete the hash table entry |
| 2278 |
|
* before invoking the deletion callback because there are cases |
| 2279 |
|
* where the deletion callback needs to invoke the command (e.g. |
| 2280 |
|
* object systems such as OTcl). However, this means that the |
| 2281 |
|
* callback could try to delete or rename the command. The deleted |
| 2282 |
|
* flag allows us to detect these cases and skip nested deletes. |
| 2283 |
|
*/ |
| 2284 |
|
|
| 2285 |
|
if (cmdPtr->deleted) { |
| 2286 |
|
/* |
| 2287 |
|
* Another deletion is already in progress. Remove the hash |
| 2288 |
|
* table entry now, but don't invoke a callback or free the |
| 2289 |
|
* command structure. |
| 2290 |
|
*/ |
| 2291 |
|
|
| 2292 |
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
| 2293 |
|
cmdPtr->hPtr = NULL; |
| 2294 |
|
return 0; |
| 2295 |
|
} |
| 2296 |
|
|
| 2297 |
|
/* |
| 2298 |
|
* If the command being deleted has a compile procedure, increment the |
| 2299 |
|
* interpreter's compileEpoch to invalidate its compiled code. This |
| 2300 |
|
* makes sure that we don't later try to execute old code compiled with |
| 2301 |
|
* command-specific (i.e., inline) bytecodes for the now-deleted |
| 2302 |
|
* command. This field is checked in Tcl_EvalObj and ObjInterpProc, and |
| 2303 |
|
* code whose compilation epoch doesn't match is recompiled. |
| 2304 |
|
*/ |
| 2305 |
|
|
| 2306 |
|
if (cmdPtr->compileProc != NULL) { |
| 2307 |
|
iPtr->compileEpoch++; |
| 2308 |
|
} |
| 2309 |
|
|
| 2310 |
|
cmdPtr->deleted = 1; |
| 2311 |
|
if (cmdPtr->deleteProc != NULL) { |
| 2312 |
|
/* |
| 2313 |
|
* Delete the command's client data. If this was an imported command |
| 2314 |
|
* created when a command was imported into a namespace, this client |
| 2315 |
|
* data will be a pointer to a ImportedCmdData structure describing |
| 2316 |
|
* the "real" command that this imported command refers to. |
| 2317 |
|
*/ |
| 2318 |
|
|
| 2319 |
|
/* |
| 2320 |
|
* If you are getting a crash during the call to deleteProc and |
| 2321 |
|
* cmdPtr->deleteProc is a pointer to the function free(), the |
| 2322 |
|
* most likely cause is that your extension allocated memory |
| 2323 |
|
* for the clientData argument to Tcl_CreateObjCommand() with |
| 2324 |
|
* the ckalloc() macro and you are now trying to deallocate |
| 2325 |
|
* this memory with free() instead of ckfree(). You should |
| 2326 |
|
* pass a pointer to your own method that calls ckfree(). |
| 2327 |
|
*/ |
| 2328 |
|
|
| 2329 |
|
(*cmdPtr->deleteProc)(cmdPtr->deleteData); |
| 2330 |
|
} |
| 2331 |
|
|
| 2332 |
|
/* |
| 2333 |
|
* Bump the command epoch counter. This will invalidate all cached |
| 2334 |
|
* references that point to this command. |
| 2335 |
|
*/ |
| 2336 |
|
|
| 2337 |
|
cmdPtr->cmdEpoch++; |
| 2338 |
|
|
| 2339 |
|
/* |
| 2340 |
|
* If this command was imported into other namespaces, then imported |
| 2341 |
|
* commands were created that refer back to this command. Delete these |
| 2342 |
|
* imported commands now. |
| 2343 |
|
*/ |
| 2344 |
|
|
| 2345 |
|
for (refPtr = cmdPtr->importRefPtr; refPtr != NULL; |
| 2346 |
|
refPtr = nextRefPtr) { |
| 2347 |
|
nextRefPtr = refPtr->nextPtr; |
| 2348 |
|
importCmd = (Tcl_Command) refPtr->importedCmdPtr; |
| 2349 |
|
Tcl_DeleteCommandFromToken(interp, importCmd); |
| 2350 |
|
} |
| 2351 |
|
|
| 2352 |
|
/* |
| 2353 |
|
* Don't use hPtr to delete the hash entry here, because it's |
| 2354 |
|
* possible that the deletion callback renamed the command. |
| 2355 |
|
* Instead, use cmdPtr->hptr, and make sure that no-one else |
| 2356 |
|
* has already deleted the hash entry. |
| 2357 |
|
*/ |
| 2358 |
|
|
| 2359 |
|
if (cmdPtr->hPtr != NULL) { |
| 2360 |
|
Tcl_DeleteHashEntry(cmdPtr->hPtr); |
| 2361 |
|
} |
| 2362 |
|
|
| 2363 |
|
/* |
| 2364 |
|
* Mark the Command structure as no longer valid. This allows |
| 2365 |
|
* TclExecuteByteCode to recognize when a Command has logically been |
| 2366 |
|
* deleted and a pointer to this Command structure cached in a CmdName |
| 2367 |
|
* object is invalid. TclExecuteByteCode will look up the command again |
| 2368 |
|
* in the interpreter's command hashtable. |
| 2369 |
|
*/ |
| 2370 |
|
|
| 2371 |
|
cmdPtr->objProc = NULL; |
| 2372 |
|
|
| 2373 |
|
/* |
| 2374 |
|
* Now free the Command structure, unless there is another reference to |
| 2375 |
|
* it from a CmdName Tcl object in some ByteCode code sequence. In that |
| 2376 |
|
* case, delay the cleanup until all references are either discarded |
| 2377 |
|
* (when a ByteCode is freed) or replaced by a new reference (when a |
| 2378 |
|
* cached CmdName Command reference is found to be invalid and |
| 2379 |
|
* TclExecuteByteCode looks up the command in the command hashtable). |
| 2380 |
|
*/ |
| 2381 |
|
|
| 2382 |
|
TclCleanupCommand(cmdPtr); |
| 2383 |
|
return 0; |
| 2384 |
|
} |
| 2385 |
|
|
| 2386 |
|
/* |
| 2387 |
|
*---------------------------------------------------------------------- |
| 2388 |
|
* |
| 2389 |
|
* TclCleanupCommand -- |
| 2390 |
|
* |
| 2391 |
|
* This procedure frees up a Command structure unless it is still |
| 2392 |
|
* referenced from an interpreter's command hashtable or from a CmdName |
| 2393 |
|
* Tcl object representing the name of a command in a ByteCode |
| 2394 |
|
* instruction sequence. |
| 2395 |
|
* |
| 2396 |
|
* Results: |
| 2397 |
|
* None. |
| 2398 |
|
* |
| 2399 |
|
* Side effects: |
| 2400 |
|
* Memory gets freed unless a reference to the Command structure still |
| 2401 |
|
* exists. In that case the cleanup is delayed until the command is |
| 2402 |
|
* deleted or when the last ByteCode referring to it is freed. |
| 2403 |
|
* |
| 2404 |
|
*---------------------------------------------------------------------- |
| 2405 |
|
*/ |
| 2406 |
|
|
| 2407 |
|
void |
| 2408 |
|
TclCleanupCommand(cmdPtr) |
| 2409 |
|
register Command *cmdPtr; /* Points to the Command structure to |
| 2410 |
|
* be freed. */ |
| 2411 |
|
{ |
| 2412 |
|
cmdPtr->refCount--; |
| 2413 |
|
if (cmdPtr->refCount <= 0) { |
| 2414 |
|
ckfree((char *) cmdPtr); |
| 2415 |
|
} |
| 2416 |
|
} |
| 2417 |
|
|
| 2418 |
|
/* |
| 2419 |
|
*---------------------------------------------------------------------- |
| 2420 |
|
* |
| 2421 |
|
* Tcl_CreateMathFunc -- |
| 2422 |
|
* |
| 2423 |
|
* Creates a new math function for expressions in a given |
| 2424 |
|
* interpreter. |
| 2425 |
|
* |
| 2426 |
|
* Results: |
| 2427 |
|
* None. |
| 2428 |
|
* |
| 2429 |
|
* Side effects: |
| 2430 |
|
* The function defined by "name" is created or redefined. If the |
| 2431 |
|
* function already exists then its definition is replaced; this |
| 2432 |
|
* includes the builtin functions. Redefining a builtin function forces |
| 2433 |
|
* all existing code to be invalidated since that code may be compiled |
| 2434 |
|
* using an instruction specific to the replaced function. In addition, |
| 2435 |
|
* redefioning a non-builtin function will force existing code to be |
| 2436 |
|
* invalidated if the number of arguments has changed. |
| 2437 |
|
* |
| 2438 |
|
*---------------------------------------------------------------------- |
| 2439 |
|
*/ |
| 2440 |
|
|
| 2441 |
|
void |
| 2442 |
|
Tcl_CreateMathFunc(interp, name, numArgs, argTypes, proc, clientData) |
| 2443 |
|
Tcl_Interp *interp; /* Interpreter in which function is |
| 2444 |
|
* to be available. */ |
| 2445 |
|
char *name; /* Name of function (e.g. "sin"). */ |
| 2446 |
|
int numArgs; /* Nnumber of arguments required by |
| 2447 |
|
* function. */ |
| 2448 |
|
Tcl_ValueType *argTypes; /* Array of types acceptable for |
| 2449 |
|
* each argument. */ |
| 2450 |
|
Tcl_MathProc *proc; /* Procedure that implements the |
| 2451 |
|
* math function. */ |
| 2452 |
|
ClientData clientData; /* Additional value to pass to the |
| 2453 |
|
* function. */ |
| 2454 |
|
{ |
| 2455 |
|
Interp *iPtr = (Interp *) interp; |
| 2456 |
|
Tcl_HashEntry *hPtr; |
| 2457 |
|
MathFunc *mathFuncPtr; |
| 2458 |
|
int new, i; |
| 2459 |
|
|
| 2460 |
|
hPtr = Tcl_CreateHashEntry(&iPtr->mathFuncTable, name, &new); |
| 2461 |
|
if (new) { |
| 2462 |
|
Tcl_SetHashValue(hPtr, ckalloc(sizeof(MathFunc))); |
| 2463 |
|
} |
| 2464 |
|
mathFuncPtr = (MathFunc *) Tcl_GetHashValue(hPtr); |
| 2465 |
|
|
| 2466 |
|
if (!new) { |
| 2467 |
|
if (mathFuncPtr->builtinFuncIndex >= 0) { |
| 2468 |
|
/* |
| 2469 |
|
* We are redefining a builtin math function. Invalidate the |
| 2470 |
|
* interpreter's existing code by incrementing its |
| 2471 |
|
* compileEpoch member. This field is checked in Tcl_EvalObj |
| 2472 |
|
* and ObjInterpProc, and code whose compilation epoch doesn't |
| 2473 |
|
* match is recompiled. Newly compiled code will no longer |
| 2474 |
|
* treat the function as builtin. |
| 2475 |
|
*/ |
| 2476 |
|
|
| 2477 |
|
iPtr->compileEpoch++; |
| 2478 |
|
} else { |
| 2479 |
|
/* |
| 2480 |
|
* A non-builtin function is being redefined. We must invalidate |
| 2481 |
|
* existing code if the number of arguments has changed. This |
| 2482 |
|
* is because existing code was compiled assuming that number. |
| 2483 |
|
*/ |
| 2484 |
|
|
| 2485 |
|
if (numArgs != mathFuncPtr->numArgs) { |
| 2486 |
|
iPtr->compileEpoch++; |
| 2487 |
|
} |
| 2488 |
|
} |
| 2489 |
|
} |
| 2490 |
|
|
| 2491 |
|
mathFuncPtr->builtinFuncIndex = -1; /* can't be a builtin function */ |
| 2492 |
|
if (numArgs > MAX_MATH_ARGS) { |
| 2493 |
|
numArgs = MAX_MATH_ARGS; |
| 2494 |
|
} |
| 2495 |
|
mathFuncPtr->numArgs = numArgs; |
| 2496 |
|
for (i = 0; i < numArgs; i++) { |
| 2497 |
|
mathFuncPtr->argTypes[i] = argTypes[i]; |
| 2498 |
|
} |
| 2499 |
|
mathFuncPtr->proc = proc; |
| 2500 |
|
mathFuncPtr->clientData = clientData; |
| 2501 |
|
} |
| 2502 |
|
|
| 2503 |
|
/* |
| 2504 |
|
*---------------------------------------------------------------------- |
| 2505 |
|
* |
| 2506 |
|
* Tcl_EvalObjEx -- |
| 2507 |
|
* |
| 2508 |
|
* Execute Tcl commands stored in a Tcl object. These commands are |
| 2509 |
|
* compiled into bytecodes if necessary, unless TCL_EVAL_DIRECT |
| 2510 |
|
* is specified. |
| 2511 |
|
* |
| 2512 |
|
* Results: |
| 2513 |
|
* The return value is one of the return codes defined in tcl.h |
| 2514 |
|
* (such as TCL_OK), and the interpreter's result contains a value |
| 2515 |
|
* to supplement the return code. |
| 2516 |
|
* |
| 2517 |
|
* Side effects: |
| 2518 |
|
* The object is converted, if necessary, to a ByteCode object that |
| 2519 |
|
* holds the bytecode instructions for the commands. Executing the |
| 2520 |
|
* commands will almost certainly have side effects that depend |
| 2521 |
|
* on those commands. |
| 2522 |
|
* |
| 2523 |
|
* Just as in Tcl_Eval, interp->termOffset is set to the offset of the |
| 2524 |
|
* last character executed in the objPtr's string. |
| 2525 |
|
* |
| 2526 |
|
*---------------------------------------------------------------------- |
| 2527 |
|
*/ |
| 2528 |
|
|
| 2529 |
|
int |
| 2530 |
|
Tcl_EvalObjEx(interp, objPtr, flags) |
| 2531 |
|
Tcl_Interp *interp; /* Token for command interpreter |
| 2532 |
|
* (returned by a previous call to |
| 2533 |
|
* Tcl_CreateInterp). */ |
| 2534 |
|
register Tcl_Obj *objPtr; /* Pointer to object containing |
| 2535 |
|
* commands to execute. */ |
| 2536 |
|
int flags; /* Collection of OR-ed bits that |
| 2537 |
|
* control the evaluation of the |
| 2538 |
|
* script. Supported values are |
| 2539 |
|
* TCL_EVAL_GLOBAL and |
| 2540 |
|
* TCL_EVAL_DIRECT. */ |
| 2541 |
|
{ |
| 2542 |
|
register Interp *iPtr = (Interp *) interp; |
| 2543 |
|
int evalFlags; /* Interp->evalFlags value when the |
| 2544 |
|
* procedure was called. */ |
| 2545 |
|
register ByteCode* codePtr; /* Tcl Internal type of bytecode. */ |
| 2546 |
|
int oldCount = iPtr->cmdCount; /* Used to tell whether any commands |
| 2547 |
|
* at all were executed. */ |
| 2548 |
|
int numSrcBytes; |
| 2549 |
|
int result; |
| 2550 |
|
CallFrame *savedVarFramePtr; /* Saves old copy of iPtr->varFramePtr |
| 2551 |
|
* in case TCL_EVAL_GLOBAL was set. */ |
| 2552 |
|
Namespace *namespacePtr; |
| 2553 |
|
|
| 2554 |
|
Tcl_IncrRefCount(objPtr); |
| 2555 |
|
|
| 2556 |
|
if ((iPtr->flags & USE_EVAL_DIRECT) || (flags & TCL_EVAL_DIRECT)) { |
| 2557 |
|
/* |
| 2558 |
|
* We're not supposed to use the compiler or byte-code interpreter. |
| 2559 |
|
* Let Tcl_EvalEx evaluate the command directly (and probably |
| 2560 |
|
* more slowly). |
| 2561 |
|
* |
| 2562 |
|
* Pure List Optimization (no string representation). In this |
| 2563 |
|
* case, we can safely use Tcl_EvalObjv instead and get an |
| 2564 |
|
* appreciable improvement in execution speed. This is because it |
| 2565 |
|
* allows us to avoid a setFromAny step that would just pack |
| 2566 |
|
* everything into a string and back out again. |
| 2567 |
|
* |
| 2568 |
|
* USE_EVAL_DIRECT is a special flag used for testing purpose only |
| 2569 |
|
* (ensure we go into the TCL_EVAL_DIRECT path, avoiding opt) |
| 2570 |
|
*/ |
| 2571 |
|
if (!(iPtr->flags & USE_EVAL_DIRECT) && |
| 2572 |
|
(objPtr->typePtr == &tclListType) && /* is a list... */ |
| 2573 |
|
(objPtr->bytes == NULL) /* ...without a string rep */) { |
| 2574 |
|
register List *listRepPtr = |
| 2575 |
|
(List *) objPtr->internalRep.otherValuePtr; |
| 2576 |
|
result = Tcl_EvalObjv(interp, listRepPtr->elemCount, |
| 2577 |
|
listRepPtr->elements, flags); |
| 2578 |
|
} else { |
| 2579 |
|
register char *p; |
| 2580 |
|
p = Tcl_GetStringFromObj(objPtr, &numSrcBytes); |
| 2581 |
|
result = Tcl_EvalEx(interp, p, numSrcBytes, flags); |
| 2582 |
|
} |
| 2583 |
|
Tcl_DecrRefCount(objPtr); |
| 2584 |
|
return result; |
| 2585 |
|
} |
| 2586 |
|
|
| 2587 |
|
/* |
| 2588 |
|
* Prevent the object from being deleted as a side effect of evaling it. |
| 2589 |
|
*/ |
| 2590 |
|
|
| 2591 |
|
savedVarFramePtr = iPtr->varFramePtr; |
| 2592 |
|
if (flags & TCL_EVAL_GLOBAL) { |
| 2593 |
|
iPtr->varFramePtr = NULL; |
| 2594 |
|
} |
| 2595 |
|
|
| 2596 |
|
/* |
| 2597 |
|
* Reset both the interpreter's string and object results and clear out |
| 2598 |
|
* any error information. This makes sure that we return an empty |
| 2599 |
|
* result if there are no commands in the command string. |
| 2600 |
|
*/ |
| 2601 |
|
|
| 2602 |
|
Tcl_ResetResult(interp); |
| 2603 |
|
|
| 2604 |
|
/* |
| 2605 |
|
* Check depth of nested calls to Tcl_Eval: if this gets too large, |
| 2606 |
|
* it's probably because of an infinite loop somewhere. |
| 2607 |
|
*/ |
| 2608 |
|
|
| 2609 |
|
iPtr->numLevels++; |
| 2610 |
|
if (iPtr->numLevels > iPtr->maxNestingDepth) { |
| 2611 |
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
| 2612 |
|
"too many nested calls to Tcl_EvalObj (infinite loop?)", -1); |
| 2613 |
|
result = TCL_ERROR; |
| 2614 |
|
goto done; |
| 2615 |
|
} |
| 2616 |
|
|
| 2617 |
|
/* |
| 2618 |
|
* On the Mac, we will never reach the default recursion limit before |
| 2619 |
|
* blowing the stack. So we need to do a check here. |
| 2620 |
|
*/ |
| 2621 |
|
|
| 2622 |
|
if (TclpCheckStackSpace() == 0) { |
| 2623 |
|
/*NOTREACHED*/ |
| 2624 |
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
| 2625 |
|
"too many nested calls to Tcl_EvalObj (infinite loop?)", -1); |
| 2626 |
|
result = TCL_ERROR; |
| 2627 |
|
goto done; |
| 2628 |
|
} |
| 2629 |
|
|
| 2630 |
|
/* |
| 2631 |
|
* If the interpreter has been deleted, return an error. |
| 2632 |
|
*/ |
| 2633 |
|
|
| 2634 |
|
if (iPtr->flags & DELETED) { |
| 2635 |
|
Tcl_ResetResult(interp); |
| 2636 |
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
| 2637 |
|
"attempt to call eval in deleted interpreter", -1); |
| 2638 |
|
Tcl_SetErrorCode(interp, "CORE", "IDELETE", |
| 2639 |
|
"attempt to call eval in deleted interpreter", |
| 2640 |
|
(char *) NULL); |
| 2641 |
|
result = TCL_ERROR; |
| 2642 |
|
goto done; |
| 2643 |
|
} |
| 2644 |
|
|
| 2645 |
|
/* |
| 2646 |
|
* Get the ByteCode from the object. If it exists, make sure it hasn't |
| 2647 |
|
* been invalidated by, e.g., someone redefining a command with a |
| 2648 |
|
* compile procedure (this might make the compiled code wrong). If |
| 2649 |
|
* necessary, convert the object to be a ByteCode object and compile it. |
| 2650 |
|
* Also, if the code was compiled in/for a different interpreter, |
| 2651 |
|
* or for a different namespace, or for the same namespace but |
| 2652 |
|
* with different name resolution rules, we recompile it. |
| 2653 |
|
* |
| 2654 |
|
* Precompiled objects, however, are immutable and therefore |
| 2655 |
|
* they are not recompiled, even if the epoch has changed. |
| 2656 |
|
* |
| 2657 |
|
* To be pedantically correct, we should also check that the |
| 2658 |
|
* originating procPtr is the same as the current context procPtr |
| 2659 |
|
* (assuming one exists at all - none for global level). This |
| 2660 |
|
* code is #def'ed out because [info body] was changed to never |
| 2661 |
|
* return a bytecode type object, which should obviate us from |
| 2662 |
|
* the extra checks here. |
| 2663 |
|
*/ |
| 2664 |
|
|
| 2665 |
|
if (iPtr->varFramePtr != NULL) { |
| 2666 |
|
namespacePtr = iPtr->varFramePtr->nsPtr; |
| 2667 |
|
} else { |
| 2668 |
|
namespacePtr = iPtr->globalNsPtr; |
| 2669 |
|
} |
| 2670 |
|
|
| 2671 |
|
if (objPtr->typePtr == &tclByteCodeType) { |
| 2672 |
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
| 2673 |
|
|
| 2674 |
|
if (((Interp *) *codePtr->interpHandle != iPtr) |
| 2675 |
|
|| (codePtr->compileEpoch != iPtr->compileEpoch) |
| 2676 |
|
#ifdef CHECK_PROC_ORIGINATION /* [Bug: 3412 Pedantic] */ |
| 2677 |
|
|| (codePtr->procPtr != NULL && !(iPtr->varFramePtr && |
| 2678 |
|
iPtr->varFramePtr->procPtr == codePtr->procPtr)) |
| 2679 |
|
#endif |
| 2680 |
|
|| (codePtr->nsPtr != namespacePtr) |
| 2681 |
|
|| (codePtr->nsEpoch != namespacePtr->resolverEpoch)) { |
| 2682 |
|
if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) { |
| 2683 |
|
if ((Interp *) *codePtr->interpHandle != iPtr) { |
| 2684 |
|
panic("Tcl_EvalObj: compiled script jumped interps"); |
| 2685 |
|
} |
| 2686 |
|
codePtr->compileEpoch = iPtr->compileEpoch; |
| 2687 |
|
} else { |
| 2688 |
|
tclByteCodeType.freeIntRepProc(objPtr); |
| 2689 |
|
} |
| 2690 |
|
} |
| 2691 |
|
} |
| 2692 |
|
if (objPtr->typePtr != &tclByteCodeType) { |
| 2693 |
|
iPtr->errorLine = 1; |
| 2694 |
|
result = tclByteCodeType.setFromAnyProc(interp, objPtr); |
| 2695 |
|
if (result != TCL_OK) { |
| 2696 |
|
goto done; |
| 2697 |
|
} |
| 2698 |
|
} else { |
| 2699 |
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
| 2700 |
|
if (((Interp *) *codePtr->interpHandle != iPtr) |
| 2701 |
|
|| (codePtr->compileEpoch != iPtr->compileEpoch)) { |
| 2702 |
|
(*tclByteCodeType.freeIntRepProc)(objPtr); |
| 2703 |
|
iPtr->errorLine = 1; |
| 2704 |
|
result = (*tclByteCodeType.setFromAnyProc)(interp, objPtr); |
| 2705 |
|
if (result != TCL_OK) { |
| 2706 |
|
iPtr->numLevels--; |
| 2707 |
|
return result; |
| 2708 |
|
} |
| 2709 |
|
} |
| 2710 |
|
} |
| 2711 |
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
| 2712 |
|
|
| 2713 |
|
/* |
| 2714 |
|
* Extract then reset the compilation flags in the interpreter. |
| 2715 |
|
* Resetting the flags must be done after any compilation. |
| 2716 |
|
*/ |
| 2717 |
|
|
| 2718 |
|
evalFlags = iPtr->evalFlags; |
| 2719 |
|
iPtr->evalFlags = 0; |
| 2720 |
|
|
| 2721 |
|
/* |
| 2722 |
|
* Execute the commands. If the code was compiled from an empty string, |
| 2723 |
|
* don't bother executing the code. |
| 2724 |
|
*/ |
| 2725 |
|
|
| 2726 |
|
numSrcBytes = codePtr->numSrcBytes; |
| 2727 |
|
if ((numSrcBytes > 0) || (codePtr->flags & TCL_BYTECODE_PRECOMPILED)) { |
| 2728 |
|
/* |
| 2729 |
|
* Increment the code's ref count while it is being executed. If |
| 2730 |
|
* afterwards no references to it remain, free the code. |
| 2731 |
|
*/ |
| 2732 |
|
|
| 2733 |
|
codePtr->refCount++; |
| 2734 |
|
result = TclExecuteByteCode(interp, codePtr); |
| 2735 |
|
codePtr->refCount--; |
| 2736 |
|
if (codePtr->refCount <= 0) { |
| 2737 |
|
TclCleanupByteCode(codePtr); |
| 2738 |
|
} |
| 2739 |
|
} else { |
| 2740 |
|
result = TCL_OK; |
| 2741 |
|
} |
| 2742 |
|
|
| 2743 |
|
/* |
| 2744 |
|
* If no commands at all were executed, check for asynchronous |
| 2745 |
|
* handlers so that they at least get one change to execute. |
| 2746 |
|
* This is needed to handle event loops written in Tcl with |
| 2747 |
|
* empty bodies. |
| 2748 |
|
*/ |
| 2749 |
|
|
| 2750 |
|
if ((oldCount == iPtr->cmdCount) && Tcl_AsyncReady()) { |
| 2751 |
|
result = Tcl_AsyncInvoke(interp, result); |
| 2752 |
|
} |
| 2753 |
|
|
| 2754 |
|
/* |
| 2755 |
|
* Update the interpreter's evaluation level count. If we are again at |
| 2756 |
|
* the top level, process any unusual return code returned by the |
| 2757 |
|
* evaluated code. |
| 2758 |
|
*/ |
| 2759 |
|
|
| 2760 |
|
if (iPtr->numLevels == 1) { |
| 2761 |
|
if (result == TCL_RETURN) { |
| 2762 |
|
result = TclUpdateReturnInfo(iPtr); |
| 2763 |
|
} |
| 2764 |
|
if ((result != TCL_OK) && (result != TCL_ERROR) |
| 2765 |
|
&& ((evalFlags & TCL_ALLOW_EXCEPTIONS) == 0)) { |
| 2766 |
|
ProcessUnexpectedResult(interp, result); |
| 2767 |
|
result = TCL_ERROR; |
| 2768 |
|
} |
| 2769 |
|
} |
| 2770 |
|
|
| 2771 |
|
/* |
| 2772 |
|
* If an error occurred, record information about what was being |
| 2773 |
|
* executed when the error occurred. |
| 2774 |
|
*/ |
| 2775 |
|
|
| 2776 |
|
if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) { |
| 2777 |
|
RecordTracebackInfo(interp, objPtr, numSrcBytes); |
| 2778 |
|
} |
| 2779 |
|
|
| 2780 |
|
/* |
| 2781 |
|
* Set the interpreter's termOffset member to the offset of the |
| 2782 |
|
* character just after the last one executed. We approximate the offset |
| 2783 |
|
* of the last character executed by using the number of characters |
| 2784 |
|
* compiled. |
| 2785 |
|
*/ |
| 2786 |
|
|
| 2787 |
|
iPtr->termOffset = numSrcBytes; |
| 2788 |
|
iPtr->flags &= ~ERR_ALREADY_LOGGED; |
| 2789 |
|
|
| 2790 |
|
done: |
| 2791 |
|
TclDecrRefCount(objPtr); |
| 2792 |
|
iPtr->varFramePtr = savedVarFramePtr; |
| 2793 |
|
iPtr->numLevels--; |
| 2794 |
|
return result; |
| 2795 |
|
} |
| 2796 |
|
|
| 2797 |
|
/* |
| 2798 |
|
*---------------------------------------------------------------------- |
| 2799 |
|
* |
| 2800 |
|
* ProcessUnexpectedResult -- |
| 2801 |
|
* |
| 2802 |
|
* Procedure called by Tcl_EvalObj to set the interpreter's result |
| 2803 |
|
* value to an appropriate error message when the code it evaluates |
| 2804 |
|
* returns an unexpected result code (not TCL_OK and not TCL_ERROR) to |
| 2805 |
|
* the topmost evaluation level. |
| 2806 |
|
* |
| 2807 |
|
* Results: |
| 2808 |
|
* None. |
| 2809 |
|
* |
| 2810 |
|
* Side effects: |
| 2811 |
|
* The interpreter result is set to an error message appropriate to |
| 2812 |
|
* the result code. |
| 2813 |
|
* |
| 2814 |
|
*---------------------------------------------------------------------- |
| 2815 |
|
*/ |
| 2816 |
|
|
| 2817 |
|
static void |
| 2818 |
|
ProcessUnexpectedResult(interp, returnCode) |
| 2819 |
|
Tcl_Interp *interp; /* The interpreter in which the unexpected |
| 2820 |
|
* result code was returned. */ |
| 2821 |
|
int returnCode; /* The unexpected result code. */ |
| 2822 |
|
{ |
| 2823 |
|
Tcl_ResetResult(interp); |
| 2824 |
|
if (returnCode == TCL_BREAK) { |
| 2825 |
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
| 2826 |
|
"invoked \"break\" outside of a loop", -1); |
| 2827 |
|
} else if (returnCode == TCL_CONTINUE) { |
| 2828 |
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
| 2829 |
|
"invoked \"continue\" outside of a loop", -1); |
| 2830 |
|
} else { |
| 2831 |
|
char buf[30 + TCL_INTEGER_SPACE]; |
| 2832 |
|
|
| 2833 |
|
sprintf(buf, "command returned bad code: %d", returnCode); |
| 2834 |
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
| 2835 |
|
} |
| 2836 |
|
} |
| 2837 |
|
|
| 2838 |
|
/* |
| 2839 |
|
*---------------------------------------------------------------------- |
| 2840 |
|
* |
| 2841 |
|
* RecordTracebackInfo -- |
| 2842 |
|
* |
| 2843 |
|
* Procedure called by Tcl_EvalObj to record information about what was |
| 2844 |
|
* being executed when the error occurred. |
| 2845 |
|
* |
| 2846 |
|
* Results: |
| 2847 |
|
* None. |
| 2848 |
|
* |
| 2849 |
|
* Side effects: |
| 2850 |
|
* Appends information about the script being evaluated to the |
| 2851 |
|
* interpreter's "errorInfo" variable. |
| 2852 |
|
* |
| 2853 |
|
*---------------------------------------------------------------------- |
| 2854 |
|
*/ |
| 2855 |
|
|
| 2856 |
|
static void |
| 2857 |
|
RecordTracebackInfo(interp, objPtr, numSrcBytes) |
| 2858 |
|
Tcl_Interp *interp; /* The interpreter in which the error |
| 2859 |
|
* occurred. */ |
| 2860 |
|
Tcl_Obj *objPtr; /* Points to object containing script whose |
| 2861 |
|
* evaluation resulted in an error. */ |
| 2862 |
|
int numSrcBytes; /* Number of bytes compiled in script. */ |
| 2863 |
|
{ |
| 2864 |
|
Interp *iPtr = (Interp *) interp; |
| 2865 |
|
char buf[200]; |
| 2866 |
|
char *ellipsis, *bytes; |
| 2867 |
|
int length; |
| 2868 |
|
|
| 2869 |
|
/* |
| 2870 |
|
* Decide how much of the command to print in the error message |
| 2871 |
|
* (up to a certain number of bytes). |
| 2872 |
|
*/ |
| 2873 |
|
|
| 2874 |
|
bytes = Tcl_GetStringFromObj(objPtr, &length); |
| 2875 |
|
length = TclMin(numSrcBytes, length); |
| 2876 |
|
|
| 2877 |
|
ellipsis = ""; |
| 2878 |
|
if (length > 150) { |
| 2879 |
|
length = 150; |
| 2880 |
|
ellipsis = " ..."; |
| 2881 |
|
} |
| 2882 |
|
|
| 2883 |
|
if (!(iPtr->flags & ERR_IN_PROGRESS)) { |
| 2884 |
|
sprintf(buf, "\n while executing\n\"%.*s%s\"", |
| 2885 |
|
length, bytes, ellipsis); |
| 2886 |
|
} else { |
| 2887 |
|
sprintf(buf, "\n invoked from within\n\"%.*s%s\"", |
| 2888 |
|
length, bytes, ellipsis); |
| 2889 |
|
} |
| 2890 |
|
Tcl_AddObjErrorInfo(interp, buf, -1); |
| 2891 |
|
} |
| 2892 |
|
|
| 2893 |
|
/* |
| 2894 |
|
*--------------------------------------------------------------------------- |
| 2895 |
|
* |
| 2896 |
|
* Tcl_ExprLong, Tcl_ExprDouble, Tcl_ExprBoolean -- |
| 2897 |
|
* |
| 2898 |
|
* Procedures to evaluate an expression and return its value in a |
| 2899 |
|
* particular form. |
| 2900 |
|
* |
| 2901 |
|
* Results: |
| 2902 |
|
* Each of the procedures below returns a standard Tcl result. If an |
| 2903 |
|
* error occurs then an error message is left in the interp's result. |
| 2904 |
|
* Otherwise the value of the expression, in the appropriate form, |
| 2905 |
|
* is stored at *ptr. If the expression had a result that was |
| 2906 |
|
* incompatible with the desired form then an error is returned. |
| 2907 |
|
* |
| 2908 |
|
* Side effects: |
| 2909 |
|
* None. |
| 2910 |
|
* |
| 2911 |
|
*--------------------------------------------------------------------------- |
| 2912 |
|
*/ |
| 2913 |
|
|
| 2914 |
|
int |
| 2915 |
|
Tcl_ExprLong(interp, string, ptr) |
| 2916 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 2917 |
|
* expression. */ |
| 2918 |
|
char *string; /* Expression to evaluate. */ |
| 2919 |
|
long *ptr; /* Where to store result. */ |
| 2920 |
|
{ |
| 2921 |
|
register Tcl_Obj *exprPtr; |
| 2922 |
|
Tcl_Obj *resultPtr; |
| 2923 |
|
int length = strlen(string); |
| 2924 |
|
int result = TCL_OK; |
| 2925 |
|
|
| 2926 |
|
if (length > 0) { |
| 2927 |
|
exprPtr = Tcl_NewStringObj(string, length); |
| 2928 |
|
Tcl_IncrRefCount(exprPtr); |
| 2929 |
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
| 2930 |
|
if (result == TCL_OK) { |
| 2931 |
|
/* |
| 2932 |
|
* Store an integer based on the expression result. |
| 2933 |
|
*/ |
| 2934 |
|
|
| 2935 |
|
if (resultPtr->typePtr == &tclIntType) { |
| 2936 |
|
*ptr = resultPtr->internalRep.longValue; |
| 2937 |
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
| 2938 |
|
*ptr = (long) resultPtr->internalRep.doubleValue; |
| 2939 |
|
} else { |
| 2940 |
|
Tcl_SetResult(interp, |
| 2941 |
|
"expression didn't have numeric value", TCL_STATIC); |
| 2942 |
|
result = TCL_ERROR; |
| 2943 |
|
} |
| 2944 |
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
| 2945 |
|
} else { |
| 2946 |
|
/* |
| 2947 |
|
* Move the interpreter's object result to the string result, |
| 2948 |
|
* then reset the object result. |
| 2949 |
|
*/ |
| 2950 |
|
|
| 2951 |
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
| 2952 |
|
TCL_VOLATILE); |
| 2953 |
|
} |
| 2954 |
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
| 2955 |
|
} else { |
| 2956 |
|
/* |
| 2957 |
|
* An empty string. Just set the result integer to 0. |
| 2958 |
|
*/ |
| 2959 |
|
|
| 2960 |
|
*ptr = 0; |
| 2961 |
|
} |
| 2962 |
|
return result; |
| 2963 |
|
} |
| 2964 |
|
|
| 2965 |
|
int |
| 2966 |
|
Tcl_ExprDouble(interp, string, ptr) |
| 2967 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 2968 |
|
* expression. */ |
| 2969 |
|
char *string; /* Expression to evaluate. */ |
| 2970 |
|
double *ptr; /* Where to store result. */ |
| 2971 |
|
{ |
| 2972 |
|
register Tcl_Obj *exprPtr; |
| 2973 |
|
Tcl_Obj *resultPtr; |
| 2974 |
|
int length = strlen(string); |
| 2975 |
|
int result = TCL_OK; |
| 2976 |
|
|
| 2977 |
|
if (length > 0) { |
| 2978 |
|
exprPtr = Tcl_NewStringObj(string, length); |
| 2979 |
|
Tcl_IncrRefCount(exprPtr); |
| 2980 |
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
| 2981 |
|
if (result == TCL_OK) { |
| 2982 |
|
/* |
| 2983 |
|
* Store a double based on the expression result. |
| 2984 |
|
*/ |
| 2985 |
|
|
| 2986 |
|
if (resultPtr->typePtr == &tclIntType) { |
| 2987 |
|
*ptr = (double) resultPtr->internalRep.longValue; |
| 2988 |
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
| 2989 |
|
*ptr = resultPtr->internalRep.doubleValue; |
| 2990 |
|
} else { |
| 2991 |
|
Tcl_SetResult(interp, |
| 2992 |
|
"expression didn't have numeric value", TCL_STATIC); |
| 2993 |
|
result = TCL_ERROR; |
| 2994 |
|
} |
| 2995 |
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
| 2996 |
|
} else { |
| 2997 |
|
/* |
| 2998 |
|
* Move the interpreter's object result to the string result, |
| 2999 |
|
* then reset the object result. |
| 3000 |
|
*/ |
| 3001 |
|
|
| 3002 |
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
| 3003 |
|
TCL_VOLATILE); |
| 3004 |
|
} |
| 3005 |
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
| 3006 |
|
} else { |
| 3007 |
|
/* |
| 3008 |
|
* An empty string. Just set the result double to 0.0. |
| 3009 |
|
*/ |
| 3010 |
|
|
| 3011 |
|
*ptr = 0.0; |
| 3012 |
|
} |
| 3013 |
|
return result; |
| 3014 |
|
} |
| 3015 |
|
|
| 3016 |
|
int |
| 3017 |
|
Tcl_ExprBoolean(interp, string, ptr) |
| 3018 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 3019 |
|
* expression. */ |
| 3020 |
|
char *string; /* Expression to evaluate. */ |
| 3021 |
|
int *ptr; /* Where to store 0/1 result. */ |
| 3022 |
|
{ |
| 3023 |
|
register Tcl_Obj *exprPtr; |
| 3024 |
|
Tcl_Obj *resultPtr; |
| 3025 |
|
int length = strlen(string); |
| 3026 |
|
int result = TCL_OK; |
| 3027 |
|
|
| 3028 |
|
if (length > 0) { |
| 3029 |
|
exprPtr = Tcl_NewStringObj(string, length); |
| 3030 |
|
Tcl_IncrRefCount(exprPtr); |
| 3031 |
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
| 3032 |
|
if (result == TCL_OK) { |
| 3033 |
|
/* |
| 3034 |
|
* Store a boolean based on the expression result. |
| 3035 |
|
*/ |
| 3036 |
|
|
| 3037 |
|
if (resultPtr->typePtr == &tclIntType) { |
| 3038 |
|
*ptr = (resultPtr->internalRep.longValue != 0); |
| 3039 |
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
| 3040 |
|
*ptr = (resultPtr->internalRep.doubleValue != 0.0); |
| 3041 |
|
} else { |
| 3042 |
|
result = Tcl_GetBooleanFromObj(interp, resultPtr, ptr); |
| 3043 |
|
} |
| 3044 |
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
| 3045 |
|
} |
| 3046 |
|
if (result != TCL_OK) { |
| 3047 |
|
/* |
| 3048 |
|
* Move the interpreter's object result to the string result, |
| 3049 |
|
* then reset the object result. |
| 3050 |
|
*/ |
| 3051 |
|
|
| 3052 |
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
| 3053 |
|
TCL_VOLATILE); |
| 3054 |
|
} |
| 3055 |
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
| 3056 |
|
} else { |
| 3057 |
|
/* |
| 3058 |
|
* An empty string. Just set the result boolean to 0 (false). |
| 3059 |
|
*/ |
| 3060 |
|
|
| 3061 |
|
*ptr = 0; |
| 3062 |
|
} |
| 3063 |
|
return result; |
| 3064 |
|
} |
| 3065 |
|
|
| 3066 |
|
/* |
| 3067 |
|
*-------------------------------------------------------------- |
| 3068 |
|
* |
| 3069 |
|
* Tcl_ExprLongObj, Tcl_ExprDoubleObj, Tcl_ExprBooleanObj -- |
| 3070 |
|
* |
| 3071 |
|
* Procedures to evaluate an expression in an object and return its |
| 3072 |
|
* value in a particular form. |
| 3073 |
|
* |
| 3074 |
|
* Results: |
| 3075 |
|
* Each of the procedures below returns a standard Tcl result |
| 3076 |
|
* object. If an error occurs then an error message is left in the |
| 3077 |
|
* interpreter's result. Otherwise the value of the expression, in the |
| 3078 |
|
* appropriate form, is stored at *ptr. If the expression had a result |
| 3079 |
|
* that was incompatible with the desired form then an error is |
| 3080 |
|
* returned. |
| 3081 |
|
* |
| 3082 |
|
* Side effects: |
| 3083 |
|
* None. |
| 3084 |
|
* |
| 3085 |
|
*-------------------------------------------------------------- |
| 3086 |
|
*/ |
| 3087 |
|
|
| 3088 |
|
int |
| 3089 |
|
Tcl_ExprLongObj(interp, objPtr, ptr) |
| 3090 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 3091 |
|
* expression. */ |
| 3092 |
|
register Tcl_Obj *objPtr; /* Expression to evaluate. */ |
| 3093 |
|
long *ptr; /* Where to store long result. */ |
| 3094 |
|
{ |
| 3095 |
|
Tcl_Obj *resultPtr; |
| 3096 |
|
int result; |
| 3097 |
|
|
| 3098 |
|
result = Tcl_ExprObj(interp, objPtr, &resultPtr); |
| 3099 |
|
if (result == TCL_OK) { |
| 3100 |
|
if (resultPtr->typePtr == &tclIntType) { |
| 3101 |
|
*ptr = resultPtr->internalRep.longValue; |
| 3102 |
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
| 3103 |
|
*ptr = (long) resultPtr->internalRep.doubleValue; |
| 3104 |
|
} else { |
| 3105 |
|
result = Tcl_GetLongFromObj(interp, resultPtr, ptr); |
| 3106 |
|
if (result != TCL_OK) { |
| 3107 |
|
return result; |
| 3108 |
|
} |
| 3109 |
|
} |
| 3110 |
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
| 3111 |
|
} |
| 3112 |
|
return result; |
| 3113 |
|
} |
| 3114 |
|
|
| 3115 |
|
int |
| 3116 |
|
Tcl_ExprDoubleObj(interp, objPtr, ptr) |
| 3117 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 3118 |
|
* expression. */ |
| 3119 |
|
register Tcl_Obj *objPtr; /* Expression to evaluate. */ |
| 3120 |
|
double *ptr; /* Where to store double result. */ |
| 3121 |
|
{ |
| 3122 |
|
Tcl_Obj *resultPtr; |
| 3123 |
|
int result; |
| 3124 |
|
|
| 3125 |
|
result = Tcl_ExprObj(interp, objPtr, &resultPtr); |
| 3126 |
|
if (result == TCL_OK) { |
| 3127 |
|
if (resultPtr->typePtr == &tclIntType) { |
| 3128 |
|
*ptr = (double) resultPtr->internalRep.longValue; |
| 3129 |
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
| 3130 |
|
*ptr = resultPtr->internalRep.doubleValue; |
| 3131 |
|
} else { |
| 3132 |
|
result = Tcl_GetDoubleFromObj(interp, resultPtr, ptr); |
| 3133 |
|
if (result != TCL_OK) { |
| 3134 |
|
return result; |
| 3135 |
|
} |
| 3136 |
|
} |
| 3137 |
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
| 3138 |
|
} |
| 3139 |
|
return result; |
| 3140 |
|
} |
| 3141 |
|
|
| 3142 |
|
int |
| 3143 |
|
Tcl_ExprBooleanObj(interp, objPtr, ptr) |
| 3144 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 3145 |
|
* expression. */ |
| 3146 |
|
register Tcl_Obj *objPtr; /* Expression to evaluate. */ |
| 3147 |
|
int *ptr; /* Where to store 0/1 result. */ |
| 3148 |
|
{ |
| 3149 |
|
Tcl_Obj *resultPtr; |
| 3150 |
|
int result; |
| 3151 |
|
|
| 3152 |
|
result = Tcl_ExprObj(interp, objPtr, &resultPtr); |
| 3153 |
|
if (result == TCL_OK) { |
| 3154 |
|
if (resultPtr->typePtr == &tclIntType) { |
| 3155 |
|
*ptr = (resultPtr->internalRep.longValue != 0); |
| 3156 |
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
| 3157 |
|
*ptr = (resultPtr->internalRep.doubleValue != 0.0); |
| 3158 |
|
} else { |
| 3159 |
|
result = Tcl_GetBooleanFromObj(interp, resultPtr, ptr); |
| 3160 |
|
} |
| 3161 |
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
| 3162 |
|
} |
| 3163 |
|
return result; |
| 3164 |
|
} |
| 3165 |
|
|
| 3166 |
|
/* |
| 3167 |
|
*---------------------------------------------------------------------- |
| 3168 |
|
* |
| 3169 |
|
* TclInvoke -- |
| 3170 |
|
* |
| 3171 |
|
* Invokes a Tcl command, given an argv/argc, from either the |
| 3172 |
|
* exposed or the hidden sets of commands in the given interpreter. |
| 3173 |
|
* NOTE: The command is invoked in the current stack frame of |
| 3174 |
|
* the interpreter, thus it can modify local variables. |
| 3175 |
|
* |
| 3176 |
|
* Results: |
| 3177 |
|
* A standard Tcl result. |
| 3178 |
|
* |
| 3179 |
|
* Side effects: |
| 3180 |
|
* Whatever the command does. |
| 3181 |
|
* |
| 3182 |
|
*---------------------------------------------------------------------- |
| 3183 |
|
*/ |
| 3184 |
|
|
| 3185 |
|
int |
| 3186 |
|
TclInvoke(interp, argc, argv, flags) |
| 3187 |
|
Tcl_Interp *interp; /* Where to invoke the command. */ |
| 3188 |
|
int argc; /* Count of args. */ |
| 3189 |
|
register char **argv; /* The arg strings; argv[0] is the name of |
| 3190 |
|
* the command to invoke. */ |
| 3191 |
|
int flags; /* Combination of flags controlling the |
| 3192 |
|
* call: TCL_INVOKE_HIDDEN and |
| 3193 |
|
* TCL_INVOKE_NO_UNKNOWN. */ |
| 3194 |
|
{ |
| 3195 |
|
register Tcl_Obj *objPtr; |
| 3196 |
|
register int i; |
| 3197 |
|
int length, result; |
| 3198 |
|
|
| 3199 |
|
/* |
| 3200 |
|
* This procedure generates an objv array for object arguments that hold |
| 3201 |
|
* the argv strings. It starts out with stack-allocated space but uses |
| 3202 |
|
* dynamically-allocated storage if needed. |
| 3203 |
|
*/ |
| 3204 |
|
|
| 3205 |
|
#define NUM_ARGS 20 |
| 3206 |
|
Tcl_Obj *(objStorage[NUM_ARGS]); |
| 3207 |
|
register Tcl_Obj **objv = objStorage; |
| 3208 |
|
|
| 3209 |
|
/* |
| 3210 |
|
* Create the object argument array "objv". Make sure objv is large |
| 3211 |
|
* enough to hold the objc arguments plus 1 extra for the zero |
| 3212 |
|
* end-of-objv word. |
| 3213 |
|
*/ |
| 3214 |
|
|
| 3215 |
|
if ((argc + 1) > NUM_ARGS) { |
| 3216 |
|
objv = (Tcl_Obj **) |
| 3217 |
|
ckalloc((unsigned)(argc + 1) * sizeof(Tcl_Obj *)); |
| 3218 |
|
} |
| 3219 |
|
|
| 3220 |
|
for (i = 0; i < argc; i++) { |
| 3221 |
|
length = strlen(argv[i]); |
| 3222 |
|
objv[i] = Tcl_NewStringObj(argv[i], length); |
| 3223 |
|
Tcl_IncrRefCount(objv[i]); |
| 3224 |
|
} |
| 3225 |
|
objv[argc] = 0; |
| 3226 |
|
|
| 3227 |
|
/* |
| 3228 |
|
* Use TclObjInterpProc to actually invoke the command. |
| 3229 |
|
*/ |
| 3230 |
|
|
| 3231 |
|
result = TclObjInvoke(interp, argc, objv, flags); |
| 3232 |
|
|
| 3233 |
|
/* |
| 3234 |
|
* Move the interpreter's object result to the string result, |
| 3235 |
|
* then reset the object result. |
| 3236 |
|
*/ |
| 3237 |
|
|
| 3238 |
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
| 3239 |
|
TCL_VOLATILE); |
| 3240 |
|
|
| 3241 |
|
/* |
| 3242 |
|
* Decrement the ref counts on the objv elements since we are done |
| 3243 |
|
* with them. |
| 3244 |
|
*/ |
| 3245 |
|
|
| 3246 |
|
for (i = 0; i < argc; i++) { |
| 3247 |
|
objPtr = objv[i]; |
| 3248 |
|
Tcl_DecrRefCount(objPtr); |
| 3249 |
|
} |
| 3250 |
|
|
| 3251 |
|
/* |
| 3252 |
|
* Free the objv array if malloc'ed storage was used. |
| 3253 |
|
*/ |
| 3254 |
|
|
| 3255 |
|
if (objv != objStorage) { |
| 3256 |
|
ckfree((char *) objv); |
| 3257 |
|
} |
| 3258 |
|
return result; |
| 3259 |
|
#undef NUM_ARGS |
| 3260 |
|
} |
| 3261 |
|
|
| 3262 |
|
/* |
| 3263 |
|
*---------------------------------------------------------------------- |
| 3264 |
|
* |
| 3265 |
|
* TclGlobalInvoke -- |
| 3266 |
|
* |
| 3267 |
|
* Invokes a Tcl command, given an argv/argc, from either the |
| 3268 |
|
* exposed or hidden sets of commands in the given interpreter. |
| 3269 |
|
* NOTE: The command is invoked in the global stack frame of |
| 3270 |
|
* the interpreter, thus it cannot see any current state on |
| 3271 |
|
* the stack for that interpreter. |
| 3272 |
|
* |
| 3273 |
|
* Results: |
| 3274 |
|
* A standard Tcl result. |
| 3275 |
|
* |
| 3276 |
|
* Side effects: |
| 3277 |
|
* Whatever the command does. |
| 3278 |
|
* |
| 3279 |
|
*---------------------------------------------------------------------- |
| 3280 |
|
*/ |
| 3281 |
|
|
| 3282 |
|
int |
| 3283 |
|
TclGlobalInvoke(interp, argc, argv, flags) |
| 3284 |
|
Tcl_Interp *interp; /* Where to invoke the command. */ |
| 3285 |
|
int argc; /* Count of args. */ |
| 3286 |
|
register char **argv; /* The arg strings; argv[0] is the name of |
| 3287 |
|
* the command to invoke. */ |
| 3288 |
|
int flags; /* Combination of flags controlling the |
| 3289 |
|
* call: TCL_INVOKE_HIDDEN and |
| 3290 |
|
* TCL_INVOKE_NO_UNKNOWN. */ |
| 3291 |
|
{ |
| 3292 |
|
register Interp *iPtr = (Interp *) interp; |
| 3293 |
|
int result; |
| 3294 |
|
CallFrame *savedVarFramePtr; |
| 3295 |
|
|
| 3296 |
|
savedVarFramePtr = iPtr->varFramePtr; |
| 3297 |
|
iPtr->varFramePtr = NULL; |
| 3298 |
|
result = TclInvoke(interp, argc, argv, flags); |
| 3299 |
|
iPtr->varFramePtr = savedVarFramePtr; |
| 3300 |
|
return result; |
| 3301 |
|
} |
| 3302 |
|
|
| 3303 |
|
/* |
| 3304 |
|
*---------------------------------------------------------------------- |
| 3305 |
|
* |
| 3306 |
|
* TclObjInvokeGlobal -- |
| 3307 |
|
* |
| 3308 |
|
* Object version: Invokes a Tcl command, given an objv/objc, from |
| 3309 |
|
* either the exposed or hidden set of commands in the given |
| 3310 |
|
* interpreter. |
| 3311 |
|
* NOTE: The command is invoked in the global stack frame of the |
| 3312 |
|
* interpreter, thus it cannot see any current state on the |
| 3313 |
|
* stack of that interpreter. |
| 3314 |
|
* |
| 3315 |
|
* Results: |
| 3316 |
|
* A standard Tcl result. |
| 3317 |
|
* |
| 3318 |
|
* Side effects: |
| 3319 |
|
* Whatever the command does. |
| 3320 |
|
* |
| 3321 |
|
*---------------------------------------------------------------------- |
| 3322 |
|
*/ |
| 3323 |
|
|
| 3324 |
|
int |
| 3325 |
|
TclObjInvokeGlobal(interp, objc, objv, flags) |
| 3326 |
|
Tcl_Interp *interp; /* Interpreter in which command is to be |
| 3327 |
|
* invoked. */ |
| 3328 |
|
int objc; /* Count of arguments. */ |
| 3329 |
|
Tcl_Obj *CONST objv[]; /* Argument objects; objv[0] points to the |
| 3330 |
|
* name of the command to invoke. */ |
| 3331 |
|
int flags; /* Combination of flags controlling the |
| 3332 |
|
* call: TCL_INVOKE_HIDDEN, |
| 3333 |
|
* TCL_INVOKE_NO_UNKNOWN, or |
| 3334 |
|
* TCL_INVOKE_NO_TRACEBACK. */ |
| 3335 |
|
{ |
| 3336 |
|
register Interp *iPtr = (Interp *) interp; |
| 3337 |
|
int result; |
| 3338 |
|
CallFrame *savedVarFramePtr; |
| 3339 |
|
|
| 3340 |
|
savedVarFramePtr = iPtr->varFramePtr; |
| 3341 |
|
iPtr->varFramePtr = NULL; |
| 3342 |
|
result = TclObjInvoke(interp, objc, objv, flags); |
| 3343 |
|
iPtr->varFramePtr = savedVarFramePtr; |
| 3344 |
|
return result; |
| 3345 |
|
} |
| 3346 |
|
|
| 3347 |
|
/* |
| 3348 |
|
*---------------------------------------------------------------------- |
| 3349 |
|
* |
| 3350 |
|
* TclObjInvoke -- |
| 3351 |
|
* |
| 3352 |
|
* Invokes a Tcl command, given an objv/objc, from either the |
| 3353 |
|
* exposed or the hidden sets of commands in the given interpreter. |
| 3354 |
|
* |
| 3355 |
|
* Results: |
| 3356 |
|
* A standard Tcl object result. |
| 3357 |
|
* |
| 3358 |
|
* Side effects: |
| 3359 |
|
* Whatever the command does. |
| 3360 |
|
* |
| 3361 |
|
*---------------------------------------------------------------------- |
| 3362 |
|
*/ |
| 3363 |
|
|
| 3364 |
|
int |
| 3365 |
|
TclObjInvoke(interp, objc, objv, flags) |
| 3366 |
|
Tcl_Interp *interp; /* Interpreter in which command is to be |
| 3367 |
|
* invoked. */ |
| 3368 |
|
int objc; /* Count of arguments. */ |
| 3369 |
|
Tcl_Obj *CONST objv[]; /* Argument objects; objv[0] points to the |
| 3370 |
|
* name of the command to invoke. */ |
| 3371 |
|
int flags; /* Combination of flags controlling the |
| 3372 |
|
* call: TCL_INVOKE_HIDDEN, |
| 3373 |
|
* TCL_INVOKE_NO_UNKNOWN, or |
| 3374 |
|
* TCL_INVOKE_NO_TRACEBACK. */ |
| 3375 |
|
{ |
| 3376 |
|
register Interp *iPtr = (Interp *) interp; |
| 3377 |
|
Tcl_HashTable *hTblPtr; /* Table of hidden commands. */ |
| 3378 |
|
char *cmdName; /* Name of the command from objv[0]. */ |
| 3379 |
|
register Tcl_HashEntry *hPtr; |
| 3380 |
|
Tcl_Command cmd; |
| 3381 |
|
Command *cmdPtr; |
| 3382 |
|
int localObjc; /* Used to invoke "unknown" if the */ |
| 3383 |
|
Tcl_Obj **localObjv = NULL; /* command is not found. */ |
| 3384 |
|
register int i; |
| 3385 |
|
int length, result; |
| 3386 |
|
char *bytes; |
| 3387 |
|
|
| 3388 |
|
if (interp == (Tcl_Interp *) NULL) { |
| 3389 |
|
return TCL_ERROR; |
| 3390 |
|
} |
| 3391 |
|
|
| 3392 |
|
if ((objc < 1) || (objv == (Tcl_Obj **) NULL)) { |
| 3393 |
|
Tcl_AppendToObj(Tcl_GetObjResult(interp), |
| 3394 |
|
"illegal argument vector", -1); |
| 3395 |
|
return TCL_ERROR; |
| 3396 |
|
} |
| 3397 |
|
|
| 3398 |
|
cmdName = Tcl_GetString(objv[0]); |
| 3399 |
|
if (flags & TCL_INVOKE_HIDDEN) { |
| 3400 |
|
/* |
| 3401 |
|
* We never invoke "unknown" for hidden commands. |
| 3402 |
|
*/ |
| 3403 |
|
|
| 3404 |
|
hPtr = NULL; |
| 3405 |
|
hTblPtr = ((Interp *) interp)->hiddenCmdTablePtr; |
| 3406 |
|
if (hTblPtr != NULL) { |
| 3407 |
|
hPtr = Tcl_FindHashEntry(hTblPtr, cmdName); |
| 3408 |
|
} |
| 3409 |
|
if (hPtr == NULL) { |
| 3410 |
|
Tcl_ResetResult(interp); |
| 3411 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 3412 |
|
"invalid hidden command name \"", cmdName, "\"", |
| 3413 |
|
(char *) NULL); |
| 3414 |
|
return TCL_ERROR; |
| 3415 |
|
} |
| 3416 |
|
cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
| 3417 |
|
} else { |
| 3418 |
|
cmdPtr = NULL; |
| 3419 |
|
cmd = Tcl_FindCommand(interp, cmdName, |
| 3420 |
|
(Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY); |
| 3421 |
|
if (cmd != (Tcl_Command) NULL) { |
| 3422 |
|
cmdPtr = (Command *) cmd; |
| 3423 |
|
} |
| 3424 |
|
if (cmdPtr == NULL) { |
| 3425 |
|
if (!(flags & TCL_INVOKE_NO_UNKNOWN)) { |
| 3426 |
|
cmd = Tcl_FindCommand(interp, "unknown", |
| 3427 |
|
(Tcl_Namespace *) NULL, /*flags*/ TCL_GLOBAL_ONLY); |
| 3428 |
|
if (cmd != (Tcl_Command) NULL) { |
| 3429 |
|
cmdPtr = (Command *) cmd; |
| 3430 |
|
} |
| 3431 |
|
if (cmdPtr != NULL) { |
| 3432 |
|
localObjc = (objc + 1); |
| 3433 |
|
localObjv = (Tcl_Obj **) |
| 3434 |
|
ckalloc((unsigned) (sizeof(Tcl_Obj *) * localObjc)); |
| 3435 |
|
localObjv[0] = Tcl_NewStringObj("unknown", -1); |
| 3436 |
|
Tcl_IncrRefCount(localObjv[0]); |
| 3437 |
|
for (i = 0; i < objc; i++) { |
| 3438 |
|
localObjv[i+1] = objv[i]; |
| 3439 |
|
} |
| 3440 |
|
objc = localObjc; |
| 3441 |
|
objv = localObjv; |
| 3442 |
|
} |
| 3443 |
|
} |
| 3444 |
|
|
| 3445 |
|
/* |
| 3446 |
|
* Check again if we found the command. If not, "unknown" is |
| 3447 |
|
* not present and we cannot help, or the caller said not to |
| 3448 |
|
* call "unknown" (they specified TCL_INVOKE_NO_UNKNOWN). |
| 3449 |
|
*/ |
| 3450 |
|
|
| 3451 |
|
if (cmdPtr == NULL) { |
| 3452 |
|
Tcl_ResetResult(interp); |
| 3453 |
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), |
| 3454 |
|
"invalid command name \"", cmdName, "\"", |
| 3455 |
|
(char *) NULL); |
| 3456 |
|
return TCL_ERROR; |
| 3457 |
|
} |
| 3458 |
|
} |
| 3459 |
|
} |
| 3460 |
|
|
| 3461 |
|
/* |
| 3462 |
|
* Invoke the command procedure. First reset the interpreter's string |
| 3463 |
|
* and object results to their default empty values since they could |
| 3464 |
|
* have gotten changed by earlier invocations. |
| 3465 |
|
*/ |
| 3466 |
|
|
| 3467 |
|
Tcl_ResetResult(interp); |
| 3468 |
|
iPtr->cmdCount++; |
| 3469 |
|
result = (*cmdPtr->objProc)(cmdPtr->objClientData, interp, objc, objv); |
| 3470 |
|
|
| 3471 |
|
/* |
| 3472 |
|
* If an error occurred, record information about what was being |
| 3473 |
|
* executed when the error occurred. |
| 3474 |
|
*/ |
| 3475 |
|
|
| 3476 |
|
if ((result == TCL_ERROR) |
| 3477 |
|
&& ((flags & TCL_INVOKE_NO_TRACEBACK) == 0) |
| 3478 |
|
&& ((iPtr->flags & ERR_ALREADY_LOGGED) == 0)) { |
| 3479 |
|
Tcl_DString ds; |
| 3480 |
|
|
| 3481 |
|
Tcl_DStringInit(&ds); |
| 3482 |
|
if (!(iPtr->flags & ERR_IN_PROGRESS)) { |
| 3483 |
|
Tcl_DStringAppend(&ds, "\n while invoking\n\"", -1); |
| 3484 |
|
} else { |
| 3485 |
|
Tcl_DStringAppend(&ds, "\n invoked from within\n\"", -1); |
| 3486 |
|
} |
| 3487 |
|
for (i = 0; i < objc; i++) { |
| 3488 |
|
bytes = Tcl_GetStringFromObj(objv[i], &length); |
| 3489 |
|
Tcl_DStringAppend(&ds, bytes, length); |
| 3490 |
|
if (i < (objc - 1)) { |
| 3491 |
|
Tcl_DStringAppend(&ds, " ", -1); |
| 3492 |
|
} else if (Tcl_DStringLength(&ds) > 100) { |
| 3493 |
|
Tcl_DStringSetLength(&ds, 100); |
| 3494 |
|
Tcl_DStringAppend(&ds, "...", -1); |
| 3495 |
|
break; |
| 3496 |
|
} |
| 3497 |
|
} |
| 3498 |
|
|
| 3499 |
|
Tcl_DStringAppend(&ds, "\"", -1); |
| 3500 |
|
Tcl_AddObjErrorInfo(interp, Tcl_DStringValue(&ds), -1); |
| 3501 |
|
Tcl_DStringFree(&ds); |
| 3502 |
|
iPtr->flags &= ~ERR_ALREADY_LOGGED; |
| 3503 |
|
} |
| 3504 |
|
|
| 3505 |
|
/* |
| 3506 |
|
* Free any locally allocated storage used to call "unknown". |
| 3507 |
|
*/ |
| 3508 |
|
|
| 3509 |
|
if (localObjv != (Tcl_Obj **) NULL) { |
| 3510 |
|
Tcl_DecrRefCount(localObjv[0]); |
| 3511 |
|
ckfree((char *) localObjv); |
| 3512 |
|
} |
| 3513 |
|
return result; |
| 3514 |
|
} |
| 3515 |
|
|
| 3516 |
|
/* |
| 3517 |
|
*--------------------------------------------------------------------------- |
| 3518 |
|
* |
| 3519 |
|
* Tcl_ExprString -- |
| 3520 |
|
* |
| 3521 |
|
* Evaluate an expression in a string and return its value in string |
| 3522 |
|
* form. |
| 3523 |
|
* |
| 3524 |
|
* Results: |
| 3525 |
|
* A standard Tcl result. If the result is TCL_OK, then the interp's |
| 3526 |
|
* result is set to the string value of the expression. If the result |
| 3527 |
|
* is TCL_ERROR, then the interp's result contains an error message. |
| 3528 |
|
* |
| 3529 |
|
* Side effects: |
| 3530 |
|
* A Tcl object is allocated to hold a copy of the expression string. |
| 3531 |
|
* This expression object is passed to Tcl_ExprObj and then |
| 3532 |
|
* deallocated. |
| 3533 |
|
* |
| 3534 |
|
*--------------------------------------------------------------------------- |
| 3535 |
|
*/ |
| 3536 |
|
|
| 3537 |
|
int |
| 3538 |
|
Tcl_ExprString(interp, string) |
| 3539 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 3540 |
|
* expression. */ |
| 3541 |
|
char *string; /* Expression to evaluate. */ |
| 3542 |
|
{ |
| 3543 |
|
register Tcl_Obj *exprPtr; |
| 3544 |
|
Tcl_Obj *resultPtr; |
| 3545 |
|
int length = strlen(string); |
| 3546 |
|
char buf[TCL_DOUBLE_SPACE]; |
| 3547 |
|
int result = TCL_OK; |
| 3548 |
|
|
| 3549 |
|
if (length > 0) { |
| 3550 |
|
TclNewObj(exprPtr); |
| 3551 |
|
TclInitStringRep(exprPtr, string, length); |
| 3552 |
|
Tcl_IncrRefCount(exprPtr); |
| 3553 |
|
|
| 3554 |
|
result = Tcl_ExprObj(interp, exprPtr, &resultPtr); |
| 3555 |
|
if (result == TCL_OK) { |
| 3556 |
|
/* |
| 3557 |
|
* Set the interpreter's string result from the result object. |
| 3558 |
|
*/ |
| 3559 |
|
|
| 3560 |
|
if (resultPtr->typePtr == &tclIntType) { |
| 3561 |
|
sprintf(buf, "%ld", resultPtr->internalRep.longValue); |
| 3562 |
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
| 3563 |
|
} else if (resultPtr->typePtr == &tclDoubleType) { |
| 3564 |
|
Tcl_PrintDouble((Tcl_Interp *) NULL, |
| 3565 |
|
resultPtr->internalRep.doubleValue, buf); |
| 3566 |
|
Tcl_SetResult(interp, buf, TCL_VOLATILE); |
| 3567 |
|
} else { |
| 3568 |
|
/* |
| 3569 |
|
* Set interpreter's string result from the result object. |
| 3570 |
|
*/ |
| 3571 |
|
|
| 3572 |
|
Tcl_SetResult(interp, TclGetString(resultPtr), |
| 3573 |
|
TCL_VOLATILE); |
| 3574 |
|
} |
| 3575 |
|
Tcl_DecrRefCount(resultPtr); /* discard the result object */ |
| 3576 |
|
} else { |
| 3577 |
|
/* |
| 3578 |
|
* Move the interpreter's object result to the string result, |
| 3579 |
|
* then reset the object result. |
| 3580 |
|
*/ |
| 3581 |
|
|
| 3582 |
|
Tcl_SetResult(interp, TclGetString(Tcl_GetObjResult(interp)), |
| 3583 |
|
TCL_VOLATILE); |
| 3584 |
|
} |
| 3585 |
|
Tcl_DecrRefCount(exprPtr); /* discard the expression object */ |
| 3586 |
|
} else { |
| 3587 |
|
/* |
| 3588 |
|
* An empty string. Just set the interpreter's result to 0. |
| 3589 |
|
*/ |
| 3590 |
|
|
| 3591 |
|
Tcl_SetResult(interp, "0", TCL_VOLATILE); |
| 3592 |
|
} |
| 3593 |
|
return result; |
| 3594 |
|
} |
| 3595 |
|
|
| 3596 |
|
/* |
| 3597 |
|
*-------------------------------------------------------------- |
| 3598 |
|
* |
| 3599 |
|
* Tcl_ExprObj -- |
| 3600 |
|
* |
| 3601 |
|
* Evaluate an expression in a Tcl_Obj. |
| 3602 |
|
* |
| 3603 |
|
* Results: |
| 3604 |
|
* A standard Tcl object result. If the result is other than TCL_OK, |
| 3605 |
|
* then the interpreter's result contains an error message. If the |
| 3606 |
|
* result is TCL_OK, then a pointer to the expression's result value |
| 3607 |
|
* object is stored in resultPtrPtr. In that case, the object's ref |
| 3608 |
|
* count is incremented to reflect the reference returned to the |
| 3609 |
|
* caller; the caller is then responsible for the resulting object |
| 3610 |
|
* and must, for example, decrement the ref count when it is finished |
| 3611 |
|
* with the object. |
| 3612 |
|
* |
| 3613 |
|
* Side effects: |
| 3614 |
|
* Any side effects caused by subcommands in the expression, if any. |
| 3615 |
|
* The interpreter result is not modified unless there is an error. |
| 3616 |
|
* |
| 3617 |
|
*-------------------------------------------------------------- |
| 3618 |
|
*/ |
| 3619 |
|
|
| 3620 |
|
int |
| 3621 |
|
Tcl_ExprObj(interp, objPtr, resultPtrPtr) |
| 3622 |
|
Tcl_Interp *interp; /* Context in which to evaluate the |
| 3623 |
|
* expression. */ |
| 3624 |
|
register Tcl_Obj *objPtr; /* Points to Tcl object containing |
| 3625 |
|
* expression to evaluate. */ |
| 3626 |
|
Tcl_Obj **resultPtrPtr; /* Where the Tcl_Obj* that is the expression |
| 3627 |
|
* result is stored if no errors occur. */ |
| 3628 |
|
{ |
| 3629 |
|
Interp *iPtr = (Interp *) interp; |
| 3630 |
|
CompileEnv compEnv; /* Compilation environment structure |
| 3631 |
|
* allocated in frame. */ |
| 3632 |
|
LiteralTable *localTablePtr = &(compEnv.localLitTable); |
| 3633 |
|
register ByteCode *codePtr = NULL; |
| 3634 |
|
/* Tcl Internal type of bytecode. |
| 3635 |
|
* Initialized to avoid compiler warning. */ |
| 3636 |
|
AuxData *auxDataPtr; |
| 3637 |
|
LiteralEntry *entryPtr; |
| 3638 |
|
Tcl_Obj *saveObjPtr; |
| 3639 |
|
char *string; |
| 3640 |
|
int length, i, result; |
| 3641 |
|
|
| 3642 |
|
/* |
| 3643 |
|
* First handle some common expressions specially. |
| 3644 |
|
*/ |
| 3645 |
|
|
| 3646 |
|
string = Tcl_GetStringFromObj(objPtr, &length); |
| 3647 |
|
if (length == 1) { |
| 3648 |
|
if (*string == '0') { |
| 3649 |
|
*resultPtrPtr = Tcl_NewLongObj(0); |
| 3650 |
|
Tcl_IncrRefCount(*resultPtrPtr); |
| 3651 |
|
return TCL_OK; |
| 3652 |
|
} else if (*string == '1') { |
| 3653 |
|
*resultPtrPtr = Tcl_NewLongObj(1); |
| 3654 |
|
Tcl_IncrRefCount(*resultPtrPtr); |
| 3655 |
|
return TCL_OK; |
| 3656 |
|
} |
| 3657 |
|
} else if ((length == 2) && (*string == '!')) { |
| 3658 |
|
if (*(string+1) == '0') { |
| 3659 |
|
*resultPtrPtr = Tcl_NewLongObj(1); |
| 3660 |
|
Tcl_IncrRefCount(*resultPtrPtr); |
| 3661 |
|
return TCL_OK; |
| 3662 |
|
} else if (*(string+1) == '1') { |
| 3663 |
|
*resultPtrPtr = Tcl_NewLongObj(0); |
| 3664 |
|
Tcl_IncrRefCount(*resultPtrPtr); |
| 3665 |
|
return TCL_OK; |
| 3666 |
|
} |
| 3667 |
|
} |
| 3668 |
|
|
| 3669 |
|
/* |
| 3670 |
|
* Get the ByteCode from the object. If it exists, make sure it hasn't |
| 3671 |
|
* been invalidated by, e.g., someone redefining a command with a |
| 3672 |
|
* compile procedure (this might make the compiled code wrong). If |
| 3673 |
|
* necessary, convert the object to be a ByteCode object and compile it. |
| 3674 |
|
* Also, if the code was compiled in/for a different interpreter, we |
| 3675 |
|
* recompile it. |
| 3676 |
|
* |
| 3677 |
|
* Precompiled expressions, however, are immutable and therefore |
| 3678 |
|
* they are not recompiled, even if the epoch has changed. |
| 3679 |
|
* |
| 3680 |
|
*/ |
| 3681 |
|
|
| 3682 |
|
if (objPtr->typePtr == &tclByteCodeType) { |
| 3683 |
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
| 3684 |
|
if (((Interp *) *codePtr->interpHandle != iPtr) |
| 3685 |
|
|| (codePtr->compileEpoch != iPtr->compileEpoch)) { |
| 3686 |
|
if (codePtr->flags & TCL_BYTECODE_PRECOMPILED) { |
| 3687 |
|
if ((Interp *) *codePtr->interpHandle != iPtr) { |
| 3688 |
|
panic("Tcl_ExprObj: compiled expression jumped interps"); |
| 3689 |
|
} |
| 3690 |
|
codePtr->compileEpoch = iPtr->compileEpoch; |
| 3691 |
|
} else { |
| 3692 |
|
(*tclByteCodeType.freeIntRepProc)(objPtr); |
| 3693 |
|
objPtr->typePtr = (Tcl_ObjType *) NULL; |
| 3694 |
|
} |
| 3695 |
|
} |
| 3696 |
|
} |
| 3697 |
|
if (objPtr->typePtr != &tclByteCodeType) { |
| 3698 |
|
TclInitCompileEnv(interp, &compEnv, string, length); |
| 3699 |
|
result = TclCompileExpr(interp, string, length, &compEnv); |
| 3700 |
|
|
| 3701 |
|
/* |
| 3702 |
|
* Free the compilation environment's literal table bucket array if |
| 3703 |
|
* it was dynamically allocated. |
| 3704 |
|
*/ |
| 3705 |
|
|
| 3706 |
|
if (localTablePtr->buckets != localTablePtr->staticBuckets) { |
| 3707 |
|
ckfree((char *) localTablePtr->buckets); |
| 3708 |
|
} |
| 3709 |
|
|
| 3710 |
|
if (result != TCL_OK) { |
| 3711 |
|
/* |
| 3712 |
|
* Compilation errors. Free storage allocated for compilation. |
| 3713 |
|
*/ |
| 3714 |
|
|
| 3715 |
|
#ifdef TCL_COMPILE_DEBUG |
| 3716 |
|
TclVerifyLocalLiteralTable(&compEnv); |
| 3717 |
|
#endif /*TCL_COMPILE_DEBUG*/ |
| 3718 |
|
entryPtr = compEnv.literalArrayPtr; |
| 3719 |
|
for (i = 0; i < compEnv.literalArrayNext; i++) { |
| 3720 |
|
TclReleaseLiteral(interp, entryPtr->objPtr); |
| 3721 |
|
entryPtr++; |
| 3722 |
|
} |
| 3723 |
|
#ifdef TCL_COMPILE_DEBUG |
| 3724 |
|
TclVerifyGlobalLiteralTable(iPtr); |
| 3725 |
|
#endif /*TCL_COMPILE_DEBUG*/ |
| 3726 |
|
|
| 3727 |
|
auxDataPtr = compEnv.auxDataArrayPtr; |
| 3728 |
|
for (i = 0; i < compEnv.auxDataArrayNext; i++) { |
| 3729 |
|
if (auxDataPtr->type->freeProc != NULL) { |
| 3730 |
|
auxDataPtr->type->freeProc(auxDataPtr->clientData); |
| 3731 |
|
} |
| 3732 |
|
auxDataPtr++; |
| 3733 |
|
} |
| 3734 |
|
TclFreeCompileEnv(&compEnv); |
| 3735 |
|
return result; |
| 3736 |
|
} |
| 3737 |
|
|
| 3738 |
|
/* |
| 3739 |
|
* Successful compilation. If the expression yielded no |
| 3740 |
|
* instructions, push an zero object as the expression's result. |
| 3741 |
|
*/ |
| 3742 |
|
|
| 3743 |
|
if (compEnv.codeNext == compEnv.codeStart) { |
| 3744 |
|
TclEmitPush(TclRegisterLiteral(&compEnv, "0", 1, /*onHeap*/ 0), |
| 3745 |
|
&compEnv); |
| 3746 |
|
} |
| 3747 |
|
|
| 3748 |
|
/* |
| 3749 |
|
* Add a "done" instruction as the last instruction and change the |
| 3750 |
|
* object into a ByteCode object. Ownership of the literal objects |
| 3751 |
|
* and aux data items is given to the ByteCode object. |
| 3752 |
|
*/ |
| 3753 |
|
|
| 3754 |
|
compEnv.numSrcBytes = iPtr->termOffset; |
| 3755 |
|
TclEmitOpcode(INST_DONE, &compEnv); |
| 3756 |
|
TclInitByteCodeObj(objPtr, &compEnv); |
| 3757 |
|
TclFreeCompileEnv(&compEnv); |
| 3758 |
|
codePtr = (ByteCode *) objPtr->internalRep.otherValuePtr; |
| 3759 |
|
#ifdef TCL_COMPILE_DEBUG |
| 3760 |
|
if (tclTraceCompile == 2) { |
| 3761 |
|
TclPrintByteCodeObj(interp, objPtr); |
| 3762 |
|
} |
| 3763 |
|
#endif /* TCL_COMPILE_DEBUG */ |
| 3764 |
|
} |
| 3765 |
|
|
| 3766 |
|
/* |
| 3767 |
|
* Execute the expression after first saving the interpreter's result. |
| 3768 |
|
*/ |
| 3769 |
|
|
| 3770 |
|
saveObjPtr = Tcl_GetObjResult(interp); |
| 3771 |
|
Tcl_IncrRefCount(saveObjPtr); |
| 3772 |
|
Tcl_ResetResult(interp); |
| 3773 |
|
|
| 3774 |
|
/* |
| 3775 |
|
* Increment the code's ref count while it is being executed. If |
| 3776 |
|
* afterwards no references to it remain, free the code. |
| 3777 |
|
*/ |
| 3778 |
|
|
| 3779 |
|
codePtr->refCount++; |
| 3780 |
|
result = TclExecuteByteCode(interp, codePtr); |
| 3781 |
|
codePtr->refCount--; |
| 3782 |
|
if (codePtr->refCount <= 0) { |
| 3783 |
|
TclCleanupByteCode(codePtr); |
| 3784 |
|
objPtr->typePtr = NULL; |
| 3785 |
|
objPtr->internalRep.otherValuePtr = NULL; |
| 3786 |
|
} |
| 3787 |
|
|
| 3788 |
|
/* |
| 3789 |
|
* If the expression evaluated successfully, store a pointer to its |
| 3790 |
|
* value object in resultPtrPtr then restore the old interpreter result. |
| 3791 |
|
* We increment the object's ref count to reflect the reference that we |
| 3792 |
|
* are returning to the caller. We also decrement the ref count of the |
| 3793 |
|
* interpreter's result object after calling Tcl_SetResult since we |
| 3794 |
|
* next store into that field directly. |
| 3795 |
|
*/ |
| 3796 |
|
|
| 3797 |
|
if (result == TCL_OK) { |
| 3798 |
|
*resultPtrPtr = iPtr->objResultPtr; |
| 3799 |
|
Tcl_IncrRefCount(iPtr->objResultPtr); |
| 3800 |
|
|
| 3801 |
|
Tcl_SetObjResult(interp, saveObjPtr); |
| 3802 |
|
} |
| 3803 |
|
Tcl_DecrRefCount(saveObjPtr); |
| 3804 |
|
return result; |
| 3805 |
|
} |
| 3806 |
|
|
| 3807 |
|
/* |
| 3808 |
|
*---------------------------------------------------------------------- |
| 3809 |
|
* |
| 3810 |
|
* Tcl_CreateTrace -- |
| 3811 |
|
* |
| 3812 |
|
* Arrange for a procedure to be called to trace command execution. |
| 3813 |
|
* |
| 3814 |
|
* Results: |
| 3815 |
|
* The return value is a token for the trace, which may be passed |
| 3816 |
|
* to Tcl_DeleteTrace to eliminate the trace. |
| 3817 |
|
* |
| 3818 |
|
* Side effects: |
| 3819 |
|
* From now on, proc will be called just before a command procedure |
| 3820 |
|
* is called to execute a Tcl command. Calls to proc will have the |
| 3821 |
|
* following form: |
| 3822 |
|
* |
| 3823 |
|
* void |
| 3824 |
|
* proc(clientData, interp, level, command, cmdProc, cmdClientData, |
| 3825 |
|
* argc, argv) |
| 3826 |
|
* ClientData clientData; |
| 3827 |
|
* Tcl_Interp *interp; |
| 3828 |
|
* int level; |
| 3829 |
|
* char *command; |
| 3830 |
|
* int (*cmdProc)(); |
| 3831 |
|
* ClientData cmdClientData; |
| 3832 |
|
* int argc; |
| 3833 |
|
* char **argv; |
| 3834 |
|
* { |
| 3835 |
|
* } |
| 3836 |
|
* |
| 3837 |
|
* The clientData and interp arguments to proc will be the same |
| 3838 |
|
* as the corresponding arguments to this procedure. Level gives |
| 3839 |
|
* the nesting level of command interpretation for this interpreter |
| 3840 |
|
* (0 corresponds to top level). Command gives the ASCII text of |
| 3841 |
|
* the raw command, cmdProc and cmdClientData give the procedure that |
| 3842 |
|
* will be called to process the command and the ClientData value it |
| 3843 |
|
* will receive, and argc and argv give the arguments to the |
| 3844 |
|
* command, after any argument parsing and substitution. Proc |
| 3845 |
|
* does not return a value. |
| 3846 |
|
* |
| 3847 |
|
*---------------------------------------------------------------------- |
| 3848 |
|
*/ |
| 3849 |
|
|
| 3850 |
|
Tcl_Trace |
| 3851 |
|
Tcl_CreateTrace(interp, level, proc, clientData) |
| 3852 |
|
Tcl_Interp *interp; /* Interpreter in which to create trace. */ |
| 3853 |
|
int level; /* Only call proc for commands at nesting |
| 3854 |
|
* level<=argument level (1=>top level). */ |
| 3855 |
|
Tcl_CmdTraceProc *proc; /* Procedure to call before executing each |
| 3856 |
|
* command. */ |
| 3857 |
|
ClientData clientData; /* Arbitrary value word to pass to proc. */ |
| 3858 |
|
{ |
| 3859 |
|
register Trace *tracePtr; |
| 3860 |
|
register Interp *iPtr = (Interp *) interp; |
| 3861 |
|
|
| 3862 |
|
/* |
| 3863 |
|
* Invalidate existing compiled code for this interpreter and arrange |
| 3864 |
|
* (by setting the DONT_COMPILE_CMDS_INLINE flag) that when compiling |
| 3865 |
|
* new code, no commands will be compiled inline (i.e., into an inline |
| 3866 |
|
* sequence of instructions). We do this because commands that were |
| 3867 |
|
* compiled inline will never result in a command trace being called. |
| 3868 |
|
*/ |
| 3869 |
|
|
| 3870 |
|
iPtr->compileEpoch++; |
| 3871 |
|
iPtr->flags |= DONT_COMPILE_CMDS_INLINE; |
| 3872 |
|
|
| 3873 |
|
tracePtr = (Trace *) ckalloc(sizeof(Trace)); |
| 3874 |
|
tracePtr->level = level; |
| 3875 |
|
tracePtr->proc = proc; |
| 3876 |
|
tracePtr->clientData = clientData; |
| 3877 |
|
tracePtr->nextPtr = iPtr->tracePtr; |
| 3878 |
|
iPtr->tracePtr = tracePtr; |
| 3879 |
|
|
| 3880 |
|
return (Tcl_Trace) tracePtr; |
| 3881 |
|
} |
| 3882 |
|
|
| 3883 |
|
/* |
| 3884 |
|
*---------------------------------------------------------------------- |
| 3885 |
|
* |
| 3886 |
|
* Tcl_DeleteTrace -- |
| 3887 |
|
* |
| 3888 |
|
* Remove a trace. |
| 3889 |
|
* |
| 3890 |
|
* Results: |
| 3891 |
|
* None. |
| 3892 |
|
* |
| 3893 |
|
* Side effects: |
| 3894 |
|
* From now on there will be no more calls to the procedure given |
| 3895 |
|
* in trace. |
| 3896 |
|
* |
| 3897 |
|
*---------------------------------------------------------------------- |
| 3898 |
|
*/ |
| 3899 |
|
|
| 3900 |
|
void |
| 3901 |
|
Tcl_DeleteTrace(interp, trace) |
| 3902 |
|
Tcl_Interp *interp; /* Interpreter that contains trace. */ |
| 3903 |
|
Tcl_Trace trace; /* Token for trace (returned previously by |
| 3904 |
|
* Tcl_CreateTrace). */ |
| 3905 |
|
{ |
| 3906 |
|
register Interp *iPtr = (Interp *) interp; |
| 3907 |
|
register Trace *tracePtr = (Trace *) trace; |
| 3908 |
|
register Trace *tracePtr2; |
| 3909 |
|
|
| 3910 |
|
if (iPtr->tracePtr == tracePtr) { |
| 3911 |
|
iPtr->tracePtr = tracePtr->nextPtr; |
| 3912 |
|
ckfree((char *) tracePtr); |
| 3913 |
|
} else { |
| 3914 |
|
for (tracePtr2 = iPtr->tracePtr; tracePtr2 != NULL; |
| 3915 |
|
tracePtr2 = tracePtr2->nextPtr) { |
| 3916 |
|
if (tracePtr2->nextPtr == tracePtr) { |
| 3917 |
|
tracePtr2->nextPtr = tracePtr->nextPtr; |
| 3918 |
|
ckfree((char *) tracePtr); |
| 3919 |
|
break; |
| 3920 |
|
} |
| 3921 |
|
} |
| 3922 |
|
} |
| 3923 |
|
|
| 3924 |
|
if (iPtr->tracePtr == NULL) { |
| 3925 |
|
/* |
| 3926 |
|
* When compiling new code, allow commands to be compiled inline. |
| 3927 |
|
*/ |
| 3928 |
|
|
| 3929 |
|
iPtr->flags &= ~DONT_COMPILE_CMDS_INLINE; |
| 3930 |
|
} |
| 3931 |
|
} |
| 3932 |
|
|
| 3933 |
|
/* |
| 3934 |
|
*---------------------------------------------------------------------- |
| 3935 |
|
* |
| 3936 |
|
* Tcl_AddErrorInfo -- |
| 3937 |
|
* |
| 3938 |
|
* Add information to the "errorInfo" variable that describes the |
| 3939 |
|
* current error. |
| 3940 |
|
* |
| 3941 |
|
* Results: |
| 3942 |
|
* None. |
| 3943 |
|
* |
| 3944 |
|
* Side effects: |
| 3945 |
|
* The contents of message are added to the "errorInfo" variable. |
| 3946 |
|
* If Tcl_Eval has been called since the current value of errorInfo |
| 3947 |
|
* was set, errorInfo is cleared before adding the new message. |
| 3948 |
|
* If we are just starting to log an error, errorInfo is initialized |
| 3949 |
|
* from the error message in the interpreter's result. |
| 3950 |
|
* |
| 3951 |
|
*---------------------------------------------------------------------- |
| 3952 |
|
*/ |
| 3953 |
|
|
| 3954 |
|
void |
| 3955 |
|
Tcl_AddErrorInfo(interp, message) |
| 3956 |
|
Tcl_Interp *interp; /* Interpreter to which error information |
| 3957 |
|
* pertains. */ |
| 3958 |
|
CONST char *message; /* Message to record. */ |
| 3959 |
|
{ |
| 3960 |
|
Tcl_AddObjErrorInfo(interp, message, -1); |
| 3961 |
|
} |
| 3962 |
|
|
| 3963 |
|
/* |
| 3964 |
|
*---------------------------------------------------------------------- |
| 3965 |
|
* |
| 3966 |
|
* Tcl_AddObjErrorInfo -- |
| 3967 |
|
* |
| 3968 |
|
* Add information to the "errorInfo" variable that describes the |
| 3969 |
|
* current error. This routine differs from Tcl_AddErrorInfo by |
| 3970 |
|
* taking a byte pointer and length. |
| 3971 |
|
* |
| 3972 |
|
* Results: |
| 3973 |
|
* None. |
| 3974 |
|
* |
| 3975 |
|
* Side effects: |
| 3976 |
|
* "length" bytes from "message" are added to the "errorInfo" variable. |
| 3977 |
|
* If "length" is negative, use bytes up to the first NULL byte. |
| 3978 |
|
* If Tcl_EvalObj has been called since the current value of errorInfo |
| 3979 |
|
* was set, errorInfo is cleared before adding the new message. |
| 3980 |
|
* If we are just starting to log an error, errorInfo is initialized |
| 3981 |
|
* from the error message in the interpreter's result. |
| 3982 |
|
* |
| 3983 |
|
*---------------------------------------------------------------------- |
| 3984 |
|
*/ |
| 3985 |
|
|
| 3986 |
|
void |
| 3987 |
|
Tcl_AddObjErrorInfo(interp, message, length) |
| 3988 |
|
Tcl_Interp *interp; /* Interpreter to which error information |
| 3989 |
|
* pertains. */ |
| 3990 |
|
CONST char *message; /* Points to the first byte of an array of |
| 3991 |
|
* bytes of the message. */ |
| 3992 |
|
int length; /* The number of bytes in the message. |
| 3993 |
|
* If < 0, then append all bytes up to a |
| 3994 |
|
* NULL byte. */ |
| 3995 |
|
{ |
| 3996 |
|
register Interp *iPtr = (Interp *) interp; |
| 3997 |
|
Tcl_Obj *messagePtr; |
| 3998 |
|
|
| 3999 |
|
/* |
| 4000 |
|
* If we are just starting to log an error, errorInfo is initialized |
| 4001 |
|
* from the error message in the interpreter's result. |
| 4002 |
|
*/ |
| 4003 |
|
|
| 4004 |
|
if (!(iPtr->flags & ERR_IN_PROGRESS)) { /* just starting to log error */ |
| 4005 |
|
iPtr->flags |= ERR_IN_PROGRESS; |
| 4006 |
|
|
| 4007 |
|
if (iPtr->result[0] == 0) { |
| 4008 |
|
(void) Tcl_SetVar2Ex(interp, "errorInfo", NULL, iPtr->objResultPtr, |
| 4009 |
|
TCL_GLOBAL_ONLY); |
| 4010 |
|
} else { /* use the string result */ |
| 4011 |
|
Tcl_SetVar2(interp, "errorInfo", (char *) NULL, interp->result, |
| 4012 |
|
TCL_GLOBAL_ONLY); |
| 4013 |
|
} |
| 4014 |
|
|
| 4015 |
|
/* |
| 4016 |
|
* If the errorCode variable wasn't set by the code that generated |
| 4017 |
|
* the error, set it to "NONE". |
| 4018 |
|
*/ |
| 4019 |
|
|
| 4020 |
|
if (!(iPtr->flags & ERROR_CODE_SET)) { |
| 4021 |
|
(void) Tcl_SetVar2(interp, "errorCode", (char *) NULL, "NONE", |
| 4022 |
|
TCL_GLOBAL_ONLY); |
| 4023 |
|
} |
| 4024 |
|
} |
| 4025 |
|
|
| 4026 |
|
/* |
| 4027 |
|
* Now append "message" to the end of errorInfo. |
| 4028 |
|
*/ |
| 4029 |
|
|
| 4030 |
|
if (length != 0) { |
| 4031 |
|
messagePtr = Tcl_NewStringObj(message, length); |
| 4032 |
|
Tcl_IncrRefCount(messagePtr); |
| 4033 |
|
Tcl_SetVar2Ex(interp, "errorInfo", NULL, messagePtr, |
| 4034 |
|
(TCL_GLOBAL_ONLY | TCL_APPEND_VALUE)); |
| 4035 |
|
Tcl_DecrRefCount(messagePtr); /* free msg object appended above */ |
| 4036 |
|
} |
| 4037 |
|
} |
| 4038 |
|
|
| 4039 |
|
/* |
| 4040 |
|
*--------------------------------------------------------------------------- |
| 4041 |
|
* |
| 4042 |
|
* Tcl_VarEvalVA -- |
| 4043 |
|
* |
| 4044 |
|
* Given a variable number of string arguments, concatenate them |
| 4045 |
|
* all together and execute the result as a Tcl command. |
| 4046 |
|
* |
| 4047 |
|
* Results: |
| 4048 |
|
* A standard Tcl return result. An error message or other result may |
| 4049 |
|
* be left in the interp's result. |
| 4050 |
|
* |
| 4051 |
|
* Side effects: |
| 4052 |
|
* Depends on what was done by the command. |
| 4053 |
|
* |
| 4054 |
|
*--------------------------------------------------------------------------- |
| 4055 |
|
*/ |
| 4056 |
|
|
| 4057 |
|
int |
| 4058 |
|
Tcl_VarEvalVA (interp, argList) |
| 4059 |
|
Tcl_Interp *interp; /* Interpreter in which to evaluate command. */ |
| 4060 |
|
va_list argList; /* Variable argument list. */ |
| 4061 |
|
{ |
| 4062 |
|
Tcl_DString buf; |
| 4063 |
|
char *string; |
| 4064 |
|
int result; |
| 4065 |
|
|
| 4066 |
|
/* |
| 4067 |
|
* Copy the strings one after the other into a single larger |
| 4068 |
|
* string. Use stack-allocated space for small commands, but if |
| 4069 |
|
* the command gets too large than call ckalloc to create the |
| 4070 |
|
* space. |
| 4071 |
|
*/ |
| 4072 |
|
|
| 4073 |
|
Tcl_DStringInit(&buf); |
| 4074 |
|
while (1) { |
| 4075 |
|
string = va_arg(argList, char *); |
| 4076 |
|
if (string == NULL) { |
| 4077 |
|
break; |
| 4078 |
|
} |
| 4079 |
|
Tcl_DStringAppend(&buf, string, -1); |
| 4080 |
|
} |
| 4081 |
|
|
| 4082 |
|
result = Tcl_Eval(interp, Tcl_DStringValue(&buf)); |
| 4083 |
|
Tcl_DStringFree(&buf); |
| 4084 |
|
return result; |
| 4085 |
|
} |
| 4086 |
|
|
| 4087 |
|
/* |
| 4088 |
|
*---------------------------------------------------------------------- |
| 4089 |
|
* |
| 4090 |
|
* Tcl_VarEval -- |
| 4091 |
|
* |
| 4092 |
|
* Given a variable number of string arguments, concatenate them |
| 4093 |
|
* all together and execute the result as a Tcl command. |
| 4094 |
|
* |
| 4095 |
|
* Results: |
| 4096 |
|
* A standard Tcl return result. An error message or other |
| 4097 |
|
* result may be left in interp->result. |
| 4098 |
|
* |
| 4099 |
|
* Side effects: |
| 4100 |
|
* Depends on what was done by the command. |
| 4101 |
|
* |
| 4102 |
|
*---------------------------------------------------------------------- |
| 4103 |
|
*/ |
| 4104 |
|
/* VARARGS2 */ /* ARGSUSED */ |
| 4105 |
|
int |
| 4106 |
|
Tcl_VarEval TCL_VARARGS_DEF(Tcl_Interp *,arg1) |
| 4107 |
|
{ |
| 4108 |
|
Tcl_Interp *interp; |
| 4109 |
|
va_list argList; |
| 4110 |
|
int result; |
| 4111 |
|
|
| 4112 |
|
interp = TCL_VARARGS_START(Tcl_Interp *,arg1,argList); |
| 4113 |
|
result = Tcl_VarEvalVA(interp, argList); |
| 4114 |
|
va_end(argList); |
| 4115 |
|
|
| 4116 |
|
return result; |
| 4117 |
|
} |
| 4118 |
|
|
| 4119 |
|
/* |
| 4120 |
|
*--------------------------------------------------------------------------- |
| 4121 |
|
* |
| 4122 |
|
* Tcl_GlobalEval -- |
| 4123 |
|
* |
| 4124 |
|
* Evaluate a command at global level in an interpreter. |
| 4125 |
|
* |
| 4126 |
|
* Results: |
| 4127 |
|
* A standard Tcl result is returned, and the interp's result is |
| 4128 |
|
* modified accordingly. |
| 4129 |
|
* |
| 4130 |
|
* Side effects: |
| 4131 |
|
* The command string is executed in interp, and the execution |
| 4132 |
|
* is carried out in the variable context of global level (no |
| 4133 |
|
* procedures active), just as if an "uplevel #0" command were |
| 4134 |
|
* being executed. |
| 4135 |
|
* |
| 4136 |
|
--------------------------------------------------------------------------- |
| 4137 |
|
*/ |
| 4138 |
|
|
| 4139 |
|
int |
| 4140 |
|
Tcl_GlobalEval(interp, command) |
| 4141 |
|
Tcl_Interp *interp; /* Interpreter in which to evaluate command. */ |
| 4142 |
|
char *command; /* Command to evaluate. */ |
| 4143 |
|
{ |
| 4144 |
|
register Interp *iPtr = (Interp *) interp; |
| 4145 |
|
int result; |
| 4146 |
|
CallFrame *savedVarFramePtr; |
| 4147 |
|
|
| 4148 |
|
savedVarFramePtr = iPtr->varFramePtr; |
| 4149 |
|
iPtr->varFramePtr = NULL; |
| 4150 |
|
result = Tcl_Eval(interp, command); |
| 4151 |
|
iPtr->varFramePtr = savedVarFramePtr; |
| 4152 |
|
return result; |
| 4153 |
|
} |
| 4154 |
|
|
| 4155 |
|
/* |
| 4156 |
|
*---------------------------------------------------------------------- |
| 4157 |
|
* |
| 4158 |
|
* Tcl_SetRecursionLimit -- |
| 4159 |
|
* |
| 4160 |
|
* Set the maximum number of recursive calls that may be active |
| 4161 |
|
* for an interpreter at once. |
| 4162 |
|
* |
| 4163 |
|
* Results: |
| 4164 |
|
* The return value is the old limit on nesting for interp. |
| 4165 |
|
* |
| 4166 |
|
* Side effects: |
| 4167 |
|
* None. |
| 4168 |
|
* |
| 4169 |
|
*---------------------------------------------------------------------- |
| 4170 |
|
*/ |
| 4171 |
|
|
| 4172 |
|
int |
| 4173 |
|
Tcl_SetRecursionLimit(interp, depth) |
| 4174 |
|
Tcl_Interp *interp; /* Interpreter whose nesting limit |
| 4175 |
|
* is to be set. */ |
| 4176 |
|
int depth; /* New value for maximimum depth. */ |
| 4177 |
|
{ |
| 4178 |
|
Interp *iPtr = (Interp *) interp; |
| 4179 |
|
int old; |
| 4180 |
|
|
| 4181 |
|
old = iPtr->maxNestingDepth; |
| 4182 |
|
if (depth > 0) { |
| 4183 |
|
iPtr->maxNestingDepth = depth; |
| 4184 |
|
} |
| 4185 |
|
return old; |
| 4186 |
|
} |
| 4187 |
|
|
| 4188 |
|
/* |
| 4189 |
|
*---------------------------------------------------------------------- |
| 4190 |
|
* |
| 4191 |
|
* Tcl_AllowExceptions -- |
| 4192 |
|
* |
| 4193 |
|
* Sets a flag in an interpreter so that exceptions can occur |
| 4194 |
|
* in the next call to Tcl_Eval without them being turned into |
| 4195 |
|
* errors. |
| 4196 |
|
* |
| 4197 |
|
* Results: |
| 4198 |
|
* None. |
| 4199 |
|
* |
| 4200 |
|
* Side effects: |
| 4201 |
|
* The TCL_ALLOW_EXCEPTIONS flag gets set in the interpreter's |
| 4202 |
|
* evalFlags structure. See the reference documentation for |
| 4203 |
|
* more details. |
| 4204 |
|
* |
| 4205 |
|
*---------------------------------------------------------------------- |
| 4206 |
|
*/ |
| 4207 |
|
|
| 4208 |
|
void |
| 4209 |
|
Tcl_AllowExceptions(interp) |
| 4210 |
|
Tcl_Interp *interp; /* Interpreter in which to set flag. */ |
| 4211 |
|
{ |
| 4212 |
|
Interp *iPtr = (Interp *) interp; |
| 4213 |
|
|
| 4214 |
|
iPtr->evalFlags |= TCL_ALLOW_EXCEPTIONS; |
| 4215 |
|
} |
| 4216 |
|
|
| 4217 |
|
|
| 4218 |
|
/* |
| 4219 |
|
*---------------------------------------------------------------------- |
| 4220 |
|
* |
| 4221 |
|
* Tcl_GetVersion |
| 4222 |
|
* |
| 4223 |
|
* Get the Tcl major, minor, and patchlevel version numbers and |
| 4224 |
|
* the release type. A patch is a release type TCL_FINAL_RELEASE |
| 4225 |
|
* with a patchLevel > 0. |
| 4226 |
|
* |
| 4227 |
|
* Results: |
| 4228 |
|
* None. |
| 4229 |
|
* |
| 4230 |
|
* Side effects: |
| 4231 |
|
* None. |
| 4232 |
|
* |
| 4233 |
|
*---------------------------------------------------------------------- |
| 4234 |
|
*/ |
| 4235 |
|
|
| 4236 |
|
void Tcl_GetVersion(majorV, minorV, patchLevelV, type) |
| 4237 |
|
int *majorV; |
| 4238 |
|
int *minorV; |
| 4239 |
|
int *patchLevelV; |
| 4240 |
|
int *type; |
| 4241 |
|
{ |
| 4242 |
|
if (majorV != NULL) { |
| 4243 |
|
*majorV = TCL_MAJOR_VERSION; |
| 4244 |
|
} |
| 4245 |
|
if (minorV != NULL) { |
| 4246 |
|
*minorV = TCL_MINOR_VERSION; |
| 4247 |
|
} |
| 4248 |
|
if (patchLevelV != NULL) { |
| 4249 |
|
*patchLevelV = TCL_RELEASE_SERIAL; |
| 4250 |
|
} |
| 4251 |
|
if (type != NULL) { |
| 4252 |
|
*type = TCL_RELEASE_LEVEL; |
| 4253 |
|
} |
| 4254 |
|
} |
| 4255 |
|
|
| 4256 |
|
/* End of tclbasic.c */ |
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