diff options
Diffstat (limited to 'generic/tclCompile.c')
| -rw-r--r-- | generic/tclCompile.c | 577 |
1 files changed, 483 insertions, 94 deletions
diff --git a/generic/tclCompile.c b/generic/tclCompile.c index a34966d..309682d 100644 --- a/generic/tclCompile.c +++ b/generic/tclCompile.c @@ -10,8 +10,6 @@ * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. - * - * RCS: @(#) $Id: tclCompile.c,v 1.188 2010/09/27 19:42:38 msofer Exp $ */ #include "tclInt.h" @@ -39,7 +37,7 @@ TCL_DECLARE_MUTEX(tableMutex) int tclTraceCompile = 0; static int traceInitialized = 0; #endif - + /* * A table describing the Tcl bytecode instructions. Entries in this table * must correspond to the instruction opcode definitions in tclCompile.h. The @@ -343,14 +341,16 @@ InstructionDesc const tclInstructionTable[] = { * Stack: ... key valueToAppend => ... newDict */ {"dictFirst", 5, +2, 1, {OPERAND_LVT4}}, /* Begin iterating over the dictionary, using the local scalar - * indicated by op4 to hold the iterator state. If doneBool is true, - * dictDone *must* be called later on. + * indicated by op4 to hold the iterator state. The local scalar + * should not refer to a named variable as the value is not wholly + * managed correctly. * Stack: ... dict => ... value key doneBool */ {"dictNext", 5, +3, 1, {OPERAND_LVT4}}, /* Get the next iteration from the iterator in op4's local scalar. * Stack: ... => ... value key doneBool */ {"dictDone", 5, 0, 1, {OPERAND_LVT4}}, - /* Terminate the iterator in op4's local scalar. */ + /* Terminate the iterator in op4's local scalar. Use unsetScalar + * instead (with 0 for flags). */ {"dictUpdateStart", 9, 0, 2, {OPERAND_LVT4, OPERAND_AUX4}}, /* Create the variables (described in the aux data referred to by the * second immediate argument) to mirror the state of the dictionary in @@ -372,13 +372,13 @@ InstructionDesc const tclInstructionTable[] = { * Stack: ... value => ... * Note that the jump table contains offsets relative to the PC when * it points to this instruction; the code is relocatable. */ - {"upvar", 5, 0, 1, {OPERAND_LVT4}}, + {"upvar", 5, -1, 1, {OPERAND_LVT4}}, /* finds level and otherName in stack, links to local variable at * index op1. Leaves the level on stack. */ - {"nsupvar", 5, 0, 1, {OPERAND_LVT4}}, + {"nsupvar", 5, -1, 1, {OPERAND_LVT4}}, /* finds namespace and otherName in stack, links to local variable at * index op1. Leaves the namespace on stack. */ - {"variable", 5, 0, 1, {OPERAND_LVT4}}, + {"variable", 5, -1, 1, {OPERAND_LVT4}}, /* finds namespace and otherName in stack, links to local variable at * index op1. Leaves the namespace on stack. */ {"syntax", 9, -1, 2, {OPERAND_INT4, OPERAND_UINT4}}, @@ -421,6 +421,114 @@ InstructionDesc const tclInstructionTable[] = { /* Make general variable cease to exist; unparsed variable name is * stktop; op1 is 1 for errors on problems, 0 otherwise */ + {"dictExpand", 1, -1, 0, {OPERAND_NONE}}, + /* Probe into a dict and extract it (or a subdict of it) into + * variables with matched names. Produces list of keys bound as + * result. Part of [dict with]. + * Stack: ... dict path => ... keyList */ + {"dictRecombineStk", 1, -3, 0, {OPERAND_NONE}}, + /* Map variable contents back into a dictionary in a variable. Part of + * [dict with]. + * Stack: ... dictVarName path keyList => ... */ + {"dictRecombineImm", 1, -2, 1, {OPERAND_LVT4}}, + /* Map variable contents back into a dictionary in the local variable + * indicated by the LVT index. Part of [dict with]. + * Stack: ... path keyList => ... */ + {"dictExists", 5, INT_MIN, 1, {OPERAND_UINT4}}, + /* The top op4 words (min 1) are a key path into the dictionary just + * below the keys on the stack, and all those values are replaced by a + * boolean indicating whether it is possible to read out a value from + * that key-path (like [dict exists]). + * Stack: ... dict key1 ... keyN => ... boolean */ + {"verifyDict", 1, -1, 0, {OPERAND_NONE}}, + /* Verifies that the word on the top of the stack is a dictionary, + * popping it if it is and throwing an error if it is not. + * Stack: ... value => ... */ + + {"strmap", 1, -2, 0, {OPERAND_NONE}}, + /* Simplified version of [string map] that only applies one change + * string, and only case-sensitively. + * Stack: ... from to string => ... changedString */ + {"strfind", 1, -1, 0, {OPERAND_NONE}}, + /* Find the first index of a needle string in a haystack string, + * producing the index (integer) or -1 if nothing found. + * Stack: ... needle haystack => ... index */ + {"strrfind", 1, -1, 0, {OPERAND_NONE}}, + /* Find the last index of a needle string in a haystack string, + * producing the index (integer) or -1 if nothing found. + * Stack: ... needle haystack => ... index */ + {"strrangeImm", 9, 0, 2, {OPERAND_IDX4, OPERAND_IDX4}}, + /* String Range: push (string range stktop op4 op4) */ + {"strrange", 1, -2, 0, {OPERAND_NONE}}, + /* String Range with non-constant arguments. + * Stack: ... string idxA idxB => ... substring */ + + {"yield", 1, 0, 0, {OPERAND_NONE}}, + /* Makes the current coroutine yield the value at the top of the + * stack, and places the response back on top of the stack when it + * resumes. + * Stack: ... valueToYield => ... resumeValue */ + {"coroName", 1, +1, 0, {OPERAND_NONE}}, + /* Push the name of the interpreter's current coroutine as an object + * on the stack. */ + {"tailcall", 2, INT_MIN, 1, {OPERAND_UINT1}}, + /* Do a tailcall with the opnd items on the stack as the thing to + * tailcall to; opnd must be greater than 0 for the semantics to work + * right. */ + + {"currentNamespace", 1, +1, 0, {OPERAND_NONE}}, + /* Push the name of the interpreter's current namespace as an object + * on the stack. */ + {"infoLevelNumber", 1, +1, 0, {OPERAND_NONE}}, + /* Push the stack depth (i.e., [info level]) of the interpreter as an + * object on the stack. */ + {"infoLevelArgs", 1, 0, 0, {OPERAND_NONE}}, + /* Push the argument words to a stack depth (i.e., [info level <n>]) + * of the interpreter as an object on the stack. + * Stack: ... depth => ... argList */ + {"resolveCmd", 1, 0, 0, {OPERAND_NONE}}, + /* Resolves the command named on the top of the stack to its fully + * qualified version, or produces the empty string if no such command + * exists. Never generates errors. + * Stack: ... cmdName => ... fullCmdName */ + {"tclooSelf", 1, +1, 0, {OPERAND_NONE}}, + /* Push the identity of the current TclOO object (i.e., the name of + * its current public access command) on the stack. */ + {"tclooClass", 1, 0, 0, {OPERAND_NONE}}, + /* Push the class of the TclOO object named at the top of the stack + * onto the stack. + * Stack: ... object => ... class */ + {"tclooNamespace", 1, 0, 0, {OPERAND_NONE}}, + /* Push the namespace of the TclOO object named at the top of the + * stack onto the stack. + * Stack: ... object => ... namespace */ + {"tclooIsObject", 1, 0, 0, {OPERAND_NONE}}, + /* Push whether the value named at the top of the stack is a TclOO + * object (i.e., a boolean). Can corrupt the interpreter result + * despite not throwing, so not safe for use in a post-exception + * context. + * Stack: ... value => ... boolean */ + + {"arrayExistsStk", 1, 0, 0, {OPERAND_NONE}}, + /* Looks up the element on the top of the stack and tests whether it + * is an array. Pushes a boolean describing whether this is the + * case. Also runs the whole-array trace on the named variable, so can + * throw anything. + * Stack: ... varName => ... boolean */ + {"arrayExistsImm", 5, +1, 1, {OPERAND_UINT4}}, + /* Looks up the variable indexed by opnd and tests whether it is an + * array. Pushes a boolean describing whether this is the case. Also + * runs the whole-array trace on the named variable, so can throw + * anything. + * Stack: ... => ... boolean */ + {"arrayMakeStk", 1, -1, 0, {OPERAND_NONE}}, + /* Forces the element on the top of the stack to be the name of an + * array. + * Stack: ... varName => ... */ + {"arrayMakeImm", 5, 0, 1, {OPERAND_UINT4}}, + /* Forces the variable indexed by opnd to be an array. Does not touch + * the stack. */ + {NULL, 0, 0, 0, {OPERAND_NONE}} }; @@ -450,6 +558,8 @@ static int FormatInstruction(ByteCode *codePtr, const unsigned char *pc, Tcl_Obj *bufferObj); static void PrintSourceToObj(Tcl_Obj *appendObj, const char *stringPtr, int maxChars); +static void UpdateStringOfInstName(Tcl_Obj *objPtr); + /* * TIP #280: Helper for building the per-word line information of all compiled * commands. @@ -484,6 +594,19 @@ static const Tcl_ObjType substCodeType = { NULL, /* updateStringProc */ NULL, /* setFromAnyProc */ }; + +/* + * The structure below defines an instruction name Tcl object to allow + * reporting of inner contexts in errorstack without string allocation. + */ + +static const Tcl_ObjType tclInstNameType = { + "instname", /* name */ + NULL, /* freeIntRepProc */ + NULL, /* dupIntRepProc */ + UpdateStringOfInstName, /* updateStringProc */ + NULL, /* setFromAnyProc */ +}; /* *---------------------------------------------------------------------- @@ -494,12 +617,13 @@ static const Tcl_ObjType substCodeType = { * generate an byte code internal form for the Tcl object "objPtr" by * compiling its string representation. This function also takes a hook * procedure that will be invoked to perform any needed post processing - * on the compilation results before generating byte codes. + * on the compilation results before generating byte codes. interp is + * compilation context and may not be NULL. * * Results: * The return value is a standard Tcl object result. If an error occurs * during compilation, an error message is left in the interpreter's - * result unless "interp" is NULL. + * result. * * Side effects: * Frees the old internal representation. If no error occurs, then the @@ -657,6 +781,9 @@ SetByteCodeFromAny( * compiled. Must not be NULL. */ Tcl_Obj *objPtr) /* The object to make a ByteCode object. */ { + if (interp == NULL) { + return TCL_ERROR; + } TclSetByteCodeFromAny(interp, objPtr, NULL, NULL); return TCL_OK; } @@ -714,12 +841,12 @@ FreeByteCodeInternalRep( { register ByteCode *codePtr = objPtr->internalRep.otherValuePtr; + objPtr->typePtr = NULL; + objPtr->internalRep.otherValuePtr = NULL; codePtr->refCount--; if (codePtr->refCount <= 0) { TclCleanupByteCode(codePtr); } - objPtr->typePtr = NULL; - objPtr->internalRep.otherValuePtr = NULL; } /* @@ -866,16 +993,16 @@ TclCleanupByteCode( Tcl_DecrRefCount(eclPtr->path); } for (i=0 ; i<eclPtr->nuloc ; i++) { - ckfree((char *) eclPtr->loc[i].line); + ckfree(eclPtr->loc[i].line); } if (eclPtr->loc != NULL) { - ckfree((char *) eclPtr->loc); + ckfree(eclPtr->loc); } Tcl_DeleteHashTable(&eclPtr->litInfo); - ckfree((char *) eclPtr); + ckfree(eclPtr); Tcl_DeleteHashEntry(hePtr); } } @@ -885,7 +1012,7 @@ TclCleanupByteCode( } TclHandleRelease(codePtr->interpHandle); - ckfree((char *) codePtr); + ckfree(codePtr); } /* @@ -912,7 +1039,7 @@ Tcl_SubstObj( Tcl_Obj *objPtr, /* The value to be substituted. */ int flags) /* What substitutions to do. */ { - TEOV_callback *rootPtr = TOP_CB(interp); + NRE_callback *rootPtr = TOP_CB(interp); if (TclNRRunCallbacks(interp, Tcl_NRSubstObj(interp, objPtr, flags), rootPtr) != TCL_OK) { @@ -986,7 +1113,7 @@ CompileSubstObj( if (objPtr->typePtr == &substCodeType) { Namespace *nsPtr = iPtr->varFramePtr->nsPtr; - codePtr = (ByteCode *) objPtr->internalRep.ptrAndLongRep.ptr; + codePtr = objPtr->internalRep.ptrAndLongRep.ptr; if ((unsigned long)flags != objPtr->internalRep.ptrAndLongRep.value || ((Interp *) *codePtr->interpHandle != iPtr) || (codePtr->compileEpoch != iPtr->compileEpoch) @@ -1050,12 +1177,12 @@ FreeSubstCodeInternalRep( { register ByteCode *codePtr = objPtr->internalRep.ptrAndLongRep.ptr; + objPtr->typePtr = NULL; + objPtr->internalRep.otherValuePtr = NULL; codePtr->refCount--; if (codePtr->refCount <= 0) { TclCleanupByteCode(codePtr); } - objPtr->typePtr = NULL; - objPtr->internalRep.otherValuePtr = NULL; } /* @@ -1130,7 +1257,7 @@ TclInitCompileEnv( * non-compiling evaluator */ - envPtr->extCmdMapPtr = (ExtCmdLoc *) ckalloc(sizeof(ExtCmdLoc)); + envPtr->extCmdMapPtr = ckalloc(sizeof(ExtCmdLoc)); envPtr->extCmdMapPtr->loc = NULL; envPtr->extCmdMapPtr->nloc = 0; envPtr->extCmdMapPtr->nuloc = 0; @@ -1287,26 +1414,26 @@ TclFreeCompileEnv( register CompileEnv *envPtr)/* Points to the CompileEnv structure. */ { if (envPtr->localLitTable.buckets != envPtr->localLitTable.staticBuckets){ - ckfree((char *) envPtr->localLitTable.buckets); + ckfree(envPtr->localLitTable.buckets); envPtr->localLitTable.buckets = envPtr->localLitTable.staticBuckets; } if (envPtr->mallocedCodeArray) { - ckfree((char *) envPtr->codeStart); + ckfree(envPtr->codeStart); } if (envPtr->mallocedLiteralArray) { - ckfree((char *) envPtr->literalArrayPtr); + ckfree(envPtr->literalArrayPtr); } if (envPtr->mallocedExceptArray) { - ckfree((char *) envPtr->exceptArrayPtr); + ckfree(envPtr->exceptArrayPtr); } if (envPtr->mallocedCmdMap) { - ckfree((char *) envPtr->cmdMapPtr); + ckfree(envPtr->cmdMapPtr); } if (envPtr->mallocedAuxDataArray) { - ckfree((char *) envPtr->auxDataArrayPtr); + ckfree(envPtr->auxDataArrayPtr); } if (envPtr->extCmdMapPtr) { - ckfree((char *) envPtr->extCmdMapPtr); + ckfree(envPtr->extCmdMapPtr); } /* @@ -1378,7 +1505,8 @@ TclWordKnownAtCompileTime( case TCL_TOKEN_BS: if (tempPtr != NULL) { char utfBuf[TCL_UTF_MAX]; - int length = Tcl_UtfBackslash(tokenPtr->start, NULL, utfBuf); + int length = TclParseBackslash(tokenPtr->start, + tokenPtr->size, NULL, utfBuf); Tcl_AppendToObj(tempPtr, utfBuf, length); } @@ -1627,8 +1755,8 @@ TclCompileScript( * have side effects that rely on the unmodified string. */ - Tcl_DStringSetLength(&ds, 0); - Tcl_DStringAppend(&ds, tokenPtr[1].start,tokenPtr[1].size); + TclDStringClear(&ds); + TclDStringAppendToken(&ds, &tokenPtr[1]); cmdPtr = (Command *) Tcl_FindCommand(interp, Tcl_DStringValue(&ds), @@ -1639,10 +1767,13 @@ TclCompileScript( && !(cmdPtr->nsPtr->flags&NS_SUPPRESS_COMPILATION) && !(cmdPtr->flags & CMD_HAS_EXEC_TRACES) && !(iPtr->flags & DONT_COMPILE_CMDS_INLINE)) { - int savedNumCmds = envPtr->numCommands; + int code, savedNumCmds = envPtr->numCommands; unsigned savedCodeNext = envPtr->codeNext - envPtr->codeStart; - int update = 0, code; + int update = 0; +#ifdef TCL_COMPILE_DEBUG + int startStackDepth = envPtr->currStackDepth; +#endif /* * Mark the start of the command; the proper bytecode @@ -1686,6 +1817,25 @@ TclCompileScript( envPtr); if (code == TCL_OK) { + /* + * Confirm that the command compiler generated a + * single value on the stack as its result. This + * is only done in debugging mode, as it *should* + * be correct and normal users have no reasonable + * way to fix it anyway. + */ + +#ifdef TCL_COMPILE_DEBUG + int diff = envPtr->currStackDepth-startStackDepth; + + if (diff != 1 && (diff != 0 || + *(envPtr->codeNext-1) != INST_DONE)) { + Tcl_Panic("bad stack adjustment when compiling" + " %.*s (was %d instead of 1)", + parsePtr->tokenPtr->size, + parsePtr->tokenPtr->start, diff); + } +#endif if (update) { /* * Fix the bytecode length. @@ -1749,6 +1899,7 @@ TclCompileScript( * unmodified. We care only if the we are in a context * which already allows absolute counting. */ + objIndex = TclRegisterNewLiteral(envPtr, tokenPtr[1].start, tokenPtr[1].size); @@ -1797,7 +1948,6 @@ TclCompileScript( &isnew); Tcl_SetHashValue(hePtr, INT2PTR(wlineat)); - if (wordIdx <= 255) { TclEmitInstInt1(INST_INVOKE_STK1, wordIdx, envPtr); } else { @@ -1820,8 +1970,8 @@ TclCompileScript( * reduced form now */ - ckfree((char *) eclPtr->loc[wlineat].line); - ckfree((char *) eclPtr->loc[wlineat].next); + ckfree(eclPtr->loc[wlineat].line); + ckfree(eclPtr->loc[wlineat].next); eclPtr->loc[wlineat].line = wlines; eclPtr->loc[wlineat].next = NULL; } /* end if parsePtr->numWords > 0 */ @@ -1854,16 +2004,10 @@ TclCompileScript( /* * If the source script yielded no instructions (e.g., if it was empty), * push an empty string as the command's result. - * - * WARNING: push an unshared object! If the script being compiled is a - * shared empty string, it will otherwise be self-referential and cause - * difficulties with literal management [Bugs 467523, 983660]. We used to - * have special code in TclReleaseLiteral to handle this particular - * self-reference, but now opt for avoiding its creation altogether. */ if (envPtr->codeNext == entryCodeNext) { - TclEmitPush(TclAddLiteralObj(envPtr, Tcl_NewObj(), NULL), envPtr); + TclEmitPush(TclRegisterNewLiteral(envPtr, "", 0), envPtr); } envPtr->numSrcBytes = p - script; @@ -2008,7 +2152,7 @@ TclCompileTokens( if (isLiteral) { maxNumCL = NUM_STATIC_POS; - clPosition = (int *) ckalloc(maxNumCL * sizeof(int)); + clPosition = ckalloc(maxNumCL * sizeof(int)); } Tcl_DStringInit(&textBuffer); @@ -2016,13 +2160,14 @@ TclCompileTokens( for ( ; count > 0; count--, tokenPtr++) { switch (tokenPtr->type) { case TCL_TOKEN_TEXT: - Tcl_DStringAppend(&textBuffer, tokenPtr->start, tokenPtr->size); + TclDStringAppendToken(&textBuffer, tokenPtr); TclAdvanceLines(&envPtr->line, tokenPtr->start, tokenPtr->start + tokenPtr->size); break; case TCL_TOKEN_BS: - length = Tcl_UtfBackslash(tokenPtr->start, NULL, buffer); + length = TclParseBackslash(tokenPtr->start, tokenPtr->size, + NULL, buffer); Tcl_DStringAppend(&textBuffer, buffer, length); /* @@ -2047,8 +2192,8 @@ TclCompileTokens( if (numCL >= maxNumCL) { maxNumCL *= 2; - clPosition = (int *) ckrealloc((char *) clPosition, - maxNumCL * sizeof(int)); + clPosition = ckrealloc(clPosition, + maxNumCL * sizeof(int)); } clPosition[numCL] = clPos; numCL ++; @@ -2062,9 +2207,7 @@ TclCompileTokens( */ if (Tcl_DStringLength(&textBuffer) > 0) { - int literal = TclRegisterNewLiteral(envPtr, - Tcl_DStringValue(&textBuffer), - Tcl_DStringLength(&textBuffer)); + int literal = TclRegisterDStringLiteral(envPtr, &textBuffer); TclEmitPush(literal, envPtr); numObjsToConcat++; @@ -2091,9 +2234,7 @@ TclCompileTokens( if (Tcl_DStringLength(&textBuffer) > 0) { int literal; - literal = TclRegisterNewLiteral(envPtr, - Tcl_DStringValue(&textBuffer), - Tcl_DStringLength(&textBuffer)); + literal = TclRegisterDStringLiteral(envPtr, &textBuffer); TclEmitPush(literal, envPtr); numObjsToConcat++; Tcl_DStringFree(&textBuffer); @@ -2116,13 +2257,10 @@ TclCompileTokens( */ if (Tcl_DStringLength(&textBuffer) > 0) { - int literal; + int literal = TclRegisterDStringLiteral(envPtr, &textBuffer); - literal = TclRegisterNewLiteral(envPtr, Tcl_DStringValue(&textBuffer), - Tcl_DStringLength(&textBuffer)); TclEmitPush(literal, envPtr); numObjsToConcat++; - if (numCL) { TclContinuationsEnter(envPtr->literalArrayPtr[literal].objPtr, numCL, clPosition); @@ -2157,7 +2295,7 @@ TclCompileTokens( */ if (maxNumCL) { - ckfree((char *) clPosition); + ckfree(clPosition); } } @@ -2396,7 +2534,7 @@ TclInitByteCodeObj( namespacePtr = envPtr->iPtr->globalNsPtr; } - p = (unsigned char *) ckalloc((size_t) structureSize); + p = ckalloc(structureSize); codePtr = (ByteCode *) p; codePtr->interpHandle = TclHandlePreserve(iPtr->handle); codePtr->compileEpoch = iPtr->compileEpoch; @@ -2428,7 +2566,27 @@ TclInitByteCodeObj( p += TCL_ALIGN(codeBytes); /* align object array */ codePtr->objArrayPtr = (Tcl_Obj **) p; for (i = 0; i < numLitObjects; i++) { - codePtr->objArrayPtr[i] = envPtr->literalArrayPtr[i].objPtr; + if (objPtr == envPtr->literalArrayPtr[i].objPtr) { + /* + * Prevent circular reference where the bytecode intrep of + * a value contains a literal which is that same value. + * If this is allowed to happen, refcount decrements may not + * reach zero, and memory may leak. Bugs 467523, 3357771 + * + * NOTE: [Bugs 3392070, 3389764] We make a copy based completely + * on the string value, and do not call Tcl_DuplicateObj() so we + * can be sure we do not have any lingering cycles hiding in + * the intrep. + */ + int numBytes; + const char *bytes = Tcl_GetStringFromObj(objPtr, &numBytes); + + codePtr->objArrayPtr[i] = Tcl_NewStringObj(bytes, numBytes); + Tcl_IncrRefCount(codePtr->objArrayPtr[i]); + Tcl_DecrRefCount(objPtr); + } else { + codePtr->objArrayPtr[i] = envPtr->literalArrayPtr[i].objPtr; + } } p += TCL_ALIGN(objArrayBytes); /* align exception range array */ @@ -2453,7 +2611,7 @@ TclInitByteCodeObj( #else nextPtr = EncodeCmdLocMap(envPtr, codePtr, (unsigned char *) p); if (((size_t)(nextPtr - p)) != cmdLocBytes) { - Tcl_Panic("TclInitByteCodeObj: encoded cmd location bytes %d != expected size %d", (nextPtr - p), cmdLocBytes); + Tcl_Panic("TclInitByteCodeObj: encoded cmd location bytes %lu != expected size %lu", (unsigned long)(nextPtr - p), (unsigned long)cmdLocBytes); } #endif @@ -2588,9 +2746,7 @@ TclFindCompiledLocal( if (create || (name == NULL)) { localVar = procPtr->numCompiledLocals; - localPtr = (CompiledLocal *) ckalloc((unsigned) - (sizeof(CompiledLocal) - sizeof(localPtr->name) - + nameBytes + 1)); + localPtr = ckalloc(TclOffset(CompiledLocal, name) + nameBytes + 1); if (procPtr->firstLocalPtr == NULL) { procPtr->firstLocalPtr = procPtr->lastLocalPtr = localPtr; } else { @@ -2651,19 +2807,17 @@ TclExpandCodeArray( */ size_t currBytes = envPtr->codeNext - envPtr->codeStart; - size_t newBytes = 2*(envPtr->codeEnd - envPtr->codeStart); + size_t newBytes = 2 * (envPtr->codeEnd - envPtr->codeStart); if (envPtr->mallocedCodeArray) { - envPtr->codeStart = (unsigned char *) - ckrealloc((char *) envPtr->codeStart, newBytes); + envPtr->codeStart = ckrealloc(envPtr->codeStart, newBytes); } else { /* * envPtr->codeStart isn't a ckalloc'd pointer, so we must code a * ckrealloc equivalent for ourselves. */ - unsigned char *newPtr = (unsigned char *) - ckalloc((unsigned) newBytes); + unsigned char *newPtr = ckalloc(newBytes); memcpy(newPtr, envPtr->codeStart, currBytes); envPtr->codeStart = newPtr; @@ -2718,21 +2872,19 @@ EnterCmdStartData( */ size_t currElems = envPtr->cmdMapEnd; - size_t newElems = 2*currElems; + size_t newElems = 2 * currElems; size_t currBytes = currElems * sizeof(CmdLocation); size_t newBytes = newElems * sizeof(CmdLocation); if (envPtr->mallocedCmdMap) { - envPtr->cmdMapPtr = (CmdLocation *) - ckrealloc((char *) envPtr->cmdMapPtr, newBytes); + envPtr->cmdMapPtr = ckrealloc(envPtr->cmdMapPtr, newBytes); } else { /* * envPtr->cmdMapPtr isn't a ckalloc'd pointer, so we must code a * ckrealloc equivalent for ourselves. */ - CmdLocation *newPtr = (CmdLocation *) - ckalloc((unsigned) newBytes); + CmdLocation *newPtr = ckalloc(newBytes); memcpy(newPtr, envPtr->cmdMapPtr, currBytes); envPtr->cmdMapPtr = newPtr; @@ -2851,16 +3003,16 @@ EnterCmdWordData( size_t newElems = (currElems ? 2*currElems : 1); size_t newBytes = newElems * sizeof(ECL); - eclPtr->loc = (ECL *) ckrealloc((char *) eclPtr->loc, newBytes); + eclPtr->loc = ckrealloc(eclPtr->loc, newBytes); eclPtr->nloc = newElems; } ePtr = &eclPtr->loc[eclPtr->nuloc]; ePtr->srcOffset = srcOffset; - ePtr->line = (int *) ckalloc(numWords * sizeof(int)); - ePtr->next = (int **) ckalloc(numWords * sizeof(int *)); + ePtr->line = ckalloc(numWords * sizeof(int)); + ePtr->next = ckalloc(numWords * sizeof(int *)); ePtr->nline = numWords; - wwlines = (int *) ckalloc(numWords * sizeof(int)); + wwlines = ckalloc(numWords * sizeof(int)); last = cmd; wordLine = line; @@ -2923,16 +3075,15 @@ TclCreateExceptRange( size_t newBytes = newElems * sizeof(ExceptionRange); if (envPtr->mallocedExceptArray) { - envPtr->exceptArrayPtr = (ExceptionRange *) - ckrealloc((char *) envPtr->exceptArrayPtr, newBytes); + envPtr->exceptArrayPtr = + ckrealloc(envPtr->exceptArrayPtr, newBytes); } else { /* * envPtr->exceptArrayPtr isn't a ckalloc'd pointer, so we must * code a ckrealloc equivalent for ourselves. */ - ExceptionRange *newPtr = (ExceptionRange *) - ckalloc((unsigned) newBytes); + ExceptionRange *newPtr = ckalloc(newBytes); memcpy(newPtr, envPtr->exceptArrayPtr, currBytes); envPtr->exceptArrayPtr = newPtr; @@ -3002,15 +3153,15 @@ TclCreateAuxData( size_t newBytes = newElems * sizeof(AuxData); if (envPtr->mallocedAuxDataArray) { - envPtr->auxDataArrayPtr = (AuxData *) - ckrealloc((char *) envPtr->auxDataArrayPtr, newBytes); + envPtr->auxDataArrayPtr = + ckrealloc(envPtr->auxDataArrayPtr, newBytes); } else { /* * envPtr->auxDataArrayPtr isn't a ckalloc'd pointer, so we must * code a ckrealloc equivalent for ourselves. */ - AuxData *newPtr = (AuxData *) ckalloc((unsigned) newBytes); + AuxData *newPtr = ckalloc(newBytes); memcpy(newPtr, envPtr->auxDataArrayPtr, currBytes); envPtr->auxDataArrayPtr = newPtr; @@ -3078,8 +3229,8 @@ TclInitJumpFixupArray( void TclExpandJumpFixupArray( register JumpFixupArray *fixupArrayPtr) - /* Points to the JumpFixupArray structure - * to enlarge. */ + /* Points to the JumpFixupArray structure to + * enlarge. */ { /* * The currently allocated jump fixup entries are stored from fixup[0] up @@ -3092,15 +3243,14 @@ TclExpandJumpFixupArray( size_t newBytes = newElems * sizeof(JumpFixup); if (fixupArrayPtr->mallocedArray) { - fixupArrayPtr->fixup = (JumpFixup *) - ckrealloc((char *) fixupArrayPtr->fixup, newBytes); + fixupArrayPtr->fixup = ckrealloc(fixupArrayPtr->fixup, newBytes); } else { /* * fixupArrayPtr->fixup isn't a ckalloc'd pointer, so we must code a * ckrealloc equivalent for ourselves. */ - JumpFixup *newPtr = (JumpFixup *) ckalloc((unsigned) newBytes); + JumpFixup *newPtr = ckalloc(newBytes); memcpy(newPtr, fixupArrayPtr->fixup, currBytes); fixupArrayPtr->fixup = newPtr; @@ -3132,7 +3282,7 @@ TclFreeJumpFixupArray( * free. */ { if (fixupArrayPtr->mallocedArray) { - ckfree((char *) fixupArrayPtr->fixup); + ckfree(fixupArrayPtr->fixup); } } @@ -3313,6 +3463,70 @@ TclFixupForwardJump( rangePtr->type); } } + + /* + * TIP #280: Adjust the mapping from PC values to the per-command + * information about arguments and their line numbers. + * + * Note: We cannot simply remove an out-of-date entry and then reinsert + * with the proper PC, because then we might overwrite another entry which + * was at that location. Therefore we pull (copy + delete) all effected + * entries (beyond the fixed PC) into an array, update them there, and at + * last reinsert them all. + */ + + { + ExtCmdLoc* eclPtr = envPtr->extCmdMapPtr; + + /* A helper structure */ + + typedef struct { + int pc; + int cmd; + } MAP; + + /* + * And the helper array. At most the whole hashtable is placed into + * this. + */ + + MAP *map = (MAP*) ckalloc (sizeof(MAP) * eclPtr->litInfo.numEntries); + + Tcl_HashSearch hSearch; + Tcl_HashEntry* hPtr; + int n, k, isnew; + + /* + * Phase I: Locate the affected entries, and save them in adjusted + * form to the array. This removes them from the hash. + */ + + for (n = 0, hPtr = Tcl_FirstHashEntry(&eclPtr->litInfo, &hSearch); + hPtr != NULL; + hPtr = Tcl_NextHashEntry(&hSearch)) { + + map [n].cmd = PTR2INT(Tcl_GetHashValue(hPtr)); + map [n].pc = PTR2INT(Tcl_GetHashKey (&eclPtr->litInfo,hPtr)); + + if (map[n].pc >= (jumpFixupPtr->codeOffset + 2)) { + Tcl_DeleteHashEntry(hPtr); + map [n].pc += 3; + n++; + } + } + + /* + * Phase II: Re-insert the modified entries into the hash. + */ + + for (k=0;k<n;k++) { + hPtr = Tcl_CreateHashEntry(&eclPtr->litInfo, INT2PTR(map[k].pc), &isnew); + Tcl_SetHashValue(hPtr, INT2PTR(map[k].cmd)); + } + + ckfree (map); + } + return 1; /* the jump was grown */ } @@ -3467,6 +3681,7 @@ TclInitAuxDataTypeTable(void) TclRegisterAuxDataType(&tclForeachInfoType); TclRegisterAuxDataType(&tclJumptableInfoType); + TclRegisterAuxDataType(&tclDictUpdateInfoType); } /* @@ -4242,6 +4457,173 @@ FormatInstruction( /* *---------------------------------------------------------------------- * + * TclGetInnerContext -- + * + * If possible, returns a list capturing the inner context. Otherwise + * return NULL. + * + *---------------------------------------------------------------------- + */ + +Tcl_Obj * +TclGetInnerContext( + Tcl_Interp *interp, + const unsigned char *pc, + Tcl_Obj **tosPtr) +{ + int objc = 0, off = 0; + Tcl_Obj *result; + Interp *iPtr = (Interp *) interp; + + switch (*pc) { + case INST_STR_LEN: + case INST_LNOT: + case INST_BITNOT: + case INST_UMINUS: + case INST_UPLUS: + case INST_TRY_CVT_TO_NUMERIC: + case INST_EXPAND_STKTOP: + case INST_EXPR_STK: + objc = 1; + break; + + case INST_LIST_IN: + case INST_LIST_NOT_IN: /* Basic list containment operators. */ + case INST_STR_EQ: + case INST_STR_NEQ: /* String (in)equality check */ + case INST_STR_CMP: /* String compare. */ + case INST_STR_INDEX: + case INST_STR_MATCH: + case INST_REGEXP: + case INST_EQ: + case INST_NEQ: + case INST_LT: + case INST_GT: + case INST_LE: + case INST_GE: + case INST_MOD: + case INST_LSHIFT: + case INST_RSHIFT: + case INST_BITOR: + case INST_BITXOR: + case INST_BITAND: + case INST_EXPON: + case INST_ADD: + case INST_SUB: + case INST_DIV: + case INST_MULT: + objc = 2; + break; + + case INST_RETURN_STK: + /* early pop. TODO: dig out opt dict too :/ */ + objc = 1; + break; + + case INST_SYNTAX: + case INST_RETURN_IMM: + objc = 2; + break; + + case INST_INVOKE_STK4: + objc = TclGetUInt4AtPtr(pc+1); + break; + + case INST_INVOKE_STK1: + objc = TclGetUInt1AtPtr(pc+1); + break; + } + + result = iPtr->innerContext; + if (Tcl_IsShared(result)) { + Tcl_DecrRefCount(result); + iPtr->innerContext = result = Tcl_NewListObj(objc + 1, NULL); + Tcl_IncrRefCount(result); + } else { + int len; + + /* + * Reset while keeping the list intrep as much as possible. + */ + + Tcl_ListObjLength(interp, result, &len); + Tcl_ListObjReplace(interp, result, 0, len, 0, NULL); + } + Tcl_ListObjAppendElement(NULL, result, TclNewInstNameObj(*pc)); + + for (; objc>0 ; objc--) { + Tcl_Obj *objPtr; + + objPtr = tosPtr[1 - objc + off]; + if (!objPtr) { + Tcl_Panic("InnerContext: bad tos -- appending null object"); + } + if (objPtr->refCount<=0 || objPtr->refCount==0x61616161) { + Tcl_Panic("InnerContext: bad tos -- appending freed object %p", + objPtr); + } + Tcl_ListObjAppendElement(NULL, result, objPtr); + } + + return result; +} + +/* + *---------------------------------------------------------------------- + * + * TclNewInstNameObj -- + * + * Creates a new InstName Tcl_Obj based on the given instruction + * + *---------------------------------------------------------------------- + */ + +Tcl_Obj * +TclNewInstNameObj( + unsigned char inst) +{ + Tcl_Obj *objPtr = Tcl_NewObj(); + + objPtr->typePtr = &tclInstNameType; + objPtr->internalRep.longValue = (long) inst; + objPtr->bytes = NULL; + + return objPtr; +} + +/* + *---------------------------------------------------------------------- + * + * UpdateStringOfInstName -- + * + * Update the string representation for an instruction name object. + * + *---------------------------------------------------------------------- + */ + +static void +UpdateStringOfInstName( + Tcl_Obj *objPtr) +{ + int inst = objPtr->internalRep.longValue; + char *s, buf[20]; + int len; + + if ((inst < 0) || (inst > LAST_INST_OPCODE)) { + sprintf(buf, "inst_%d", inst); + s = buf; + } else { + s = (char *) tclInstructionTable[objPtr->internalRep.longValue].name; + } + len = strlen(s); + objPtr->bytes = ckalloc(len + 1); + memcpy(objPtr->bytes, s, len + 1); + objPtr->length = len; +} + +/* + *---------------------------------------------------------------------- + * * PrintSourceToObj -- * * Appends a quoted representation of a string to a Tcl_Obj. @@ -4320,7 +4702,13 @@ RecordByteCodeStats( * to add to accumulated statistics. */ { Interp *iPtr = (Interp *) *codePtr->interpHandle; - register ByteCodeStats *statsPtr = &iPtr->stats; + register ByteCodeStats *statsPtr; + + if (iPtr == NULL) { + /* Avoid segfaulting in case we're called in a deleted interp */ + return; + } + statsPtr = &(iPtr->stats); statsPtr->numCompilations++; statsPtr->totalSrcBytes += (double) codePtr->numSrcBytes; @@ -4347,5 +4735,6 @@ RecordByteCodeStats( * mode: c * c-basic-offset: 4 * fill-column: 78 + * tab-width: 8 * End: */ |