diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | generic/tclCompCmds.c | 21 | ||||
| -rw-r--r-- | generic/tclEnsemble.c | 14 |
3 files changed, 37 insertions, 6 deletions
@@ -1,3 +1,11 @@ +2013-01-17 Donal K. Fellows <dkf@users.sf.net> + + * generic/tclCompCmds.c (PushVarName): [Bug 3600328]: Added mechanism + for suppressing compilation of variables when we couldn't cope with + the results. Useful for some [array] subcommands. + * generic/tclEnsemble.c (CompileToCompiledCommand): Must restore the + compilation environment when a command compiler fails. + 2013-01-16 Donal K. Fellows <dkf@users.sf.net> * generic/tclZlib.c (TclZlibInit): [Bug 3601086]: Register the config diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c index 752db93..503f339 100644 --- a/generic/tclCompCmds.c +++ b/generic/tclCompCmds.c @@ -107,6 +107,7 @@ static int CompileDictEachCmd(Tcl_Interp *interp, */ #define TCL_NO_LARGE_INDEX 1 /* Do not return localIndex value > 255 */ +#define TCL_NO_ELEMENT 2 /* Do not push the array element. */ /* * The structures below define the AuxData types defined in this file. @@ -259,7 +260,7 @@ TclCompileArrayExistsCmd( } tokenPtr = TokenAfter(parsePtr->tokenPtr); - PushVarNameWord(interp, tokenPtr, envPtr, 0, + PushVarNameWord(interp, tokenPtr, envPtr, TCL_NO_ELEMENT, &localIndex, &simpleVarName, &isScalar, 1); if (!isScalar) { return TCL_ERROR; @@ -294,7 +295,14 @@ TclCompileArraySetCmd( } tokenPtr = TokenAfter(parsePtr->tokenPtr); - PushVarNameWord(interp, tokenPtr, envPtr, 0, + if (envPtr->procPtr == NULL) { + Tcl_Token *tokPtr = TokenAfter(tokenPtr); + + if (tokPtr->type != TCL_TOKEN_SIMPLE_WORD || tokPtr[1].size != 0) { + return TCL_ERROR; + } + } + PushVarNameWord(interp, tokenPtr, envPtr, TCL_NO_ELEMENT, &localIndex, &simpleVarName, &isScalar, 1); if (!isScalar) { return TCL_ERROR; @@ -437,7 +445,7 @@ TclCompileArrayUnsetCmd( return TCL_ERROR; } - PushVarNameWord(interp, tokenPtr, envPtr, 0, + PushVarNameWord(interp, tokenPtr, envPtr, TCL_NO_ELEMENT, &localIndex, &simpleVarName, &isScalar, 1); if (!isScalar) { return TCL_ERROR; @@ -6006,7 +6014,7 @@ PushVarName( Tcl_Interp *interp, /* Used for error reporting. */ Tcl_Token *varTokenPtr, /* Points to a variable token. */ CompileEnv *envPtr, /* Holds resulting instructions. */ - int flags, /* TCL_NO_LARGE_INDEX. */ + int flags, /* TCL_NO_LARGE_INDEX | TCL_NO_ELEMENT. */ int *localIndexPtr, /* Must not be NULL. */ int *simpleVarNamePtr, /* Must not be NULL. */ int *isScalarPtr, /* Must not be NULL. */ @@ -6187,10 +6195,11 @@ PushVarName( } /* - * Compile the element script, if any. + * Compile the element script, if any, and only if not inhibited. [Bug + * 3600328] */ - if (elName != NULL) { + if (elName != NULL && !(flags & TCL_NO_ELEMENT)) { if (elNameChars) { envPtr->line = line; envPtr->clNext = clNext; diff --git a/generic/tclEnsemble.c b/generic/tclEnsemble.c index 058590a..88de9f3 100644 --- a/generic/tclEnsemble.c +++ b/generic/tclEnsemble.c @@ -3056,6 +3056,9 @@ CompileToCompiledCommand( Tcl_Parse synthetic; Tcl_Token *tokenPtr; int result, i; + int savedNumCmds = envPtr->numCommands; + int savedStackDepth = envPtr->currStackDepth; + unsigned savedCodeNext = envPtr->codeNext - envPtr->codeStart; if (cmdPtr->compileProc == NULL) { return TCL_ERROR; @@ -3110,6 +3113,17 @@ CompileToCompiledCommand( result = cmdPtr->compileProc(interp, &synthetic, cmdPtr, envPtr); /* + * If our target fails to compile, revert the number of commands and the + * pointer to the place to issue the next instruction. [Bug 3600328] + */ + + if (result != TCL_OK) { + envPtr->numCommands = savedNumCmds; + envPtr->currStackDepth = savedStackDepth; + envPtr->codeNext = envPtr->codeStart + savedCodeNext; + } + + /* * Clean up if necessary. */ |