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author | dgp <dgp@users.sourceforge.net> | 2013-05-23 18:32:19 (GMT) |
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committer | dgp <dgp@users.sourceforge.net> | 2013-05-23 18:32:19 (GMT) |
commit | 749f9c4ee0a50a7cedec339c2b3a69733fedf172 (patch) | |
tree | 5e1a029263e1a5f7a750bc5d49ce8a125cf0ed07 /generic/tclCompCmdsGR.c | |
parent | 3591223be29f8da7f1f92f8fc8c1ad89dd6bd461 (diff) | |
download | tcl-749f9c4ee0a50a7cedec339c2b3a69733fedf172.zip tcl-749f9c4ee0a50a7cedec339c2b3a69733fedf172.tar.gz tcl-749f9c4ee0a50a7cedec339c2b3a69733fedf172.tar.bz2 |
Eliminate code duplication.
Diffstat (limited to 'generic/tclCompCmdsGR.c')
-rw-r--r-- | generic/tclCompCmdsGR.c | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/generic/tclCompCmdsGR.c b/generic/tclCompCmdsGR.c index 26e63e8..2bd43b6 100644 --- a/generic/tclCompCmdsGR.c +++ b/generic/tclCompCmdsGR.c @@ -27,71 +27,7 @@ static void CompileReturnInternal(CompileEnv *envPtr, Tcl_Obj *returnOpts); static int IndexTailVarIfKnown(Tcl_Interp *interp, Tcl_Token *varTokenPtr, CompileEnv *envPtr); -static int PushVarName(Tcl_Interp *interp, - Tcl_Token *varTokenPtr, CompileEnv *envPtr, - int flags, int *localIndexPtr, - int *simpleVarNamePtr, int *isScalarPtr, - int line, int *clNext); -/* - * Macro that encapsulates an efficiency trick that avoids a function call for - * the simplest of compiles. The ANSI C "prototype" for this macro is: - * - * static void CompileWord(CompileEnv *envPtr, Tcl_Token *tokenPtr, - * Tcl_Interp *interp, int word); - */ - -#define CompileWord(envPtr, tokenPtr, interp, word) \ - if ((tokenPtr)->type == TCL_TOKEN_SIMPLE_WORD) { \ - TclEmitPush(TclRegisterNewLiteral((envPtr), (tokenPtr)[1].start, \ - (tokenPtr)[1].size), (envPtr)); \ - } else { \ - envPtr->line = mapPtr->loc[eclIndex].line[word]; \ - envPtr->clNext = mapPtr->loc[eclIndex].next[word]; \ - TclCompileTokens((interp), (tokenPtr)+1, (tokenPtr)->numComponents, \ - (envPtr)); \ - } - -/* - * TIP #280: Remember the per-word line information of the current command. An - * index is used instead of a pointer as recursive compilation may reallocate, - * i.e. move, the array. This is also the reason to save the nuloc now, it may - * change during the course of the function. - * - * Macro to encapsulate the variable definition and setup. - */ - -#define DefineLineInformation \ - ExtCmdLoc *mapPtr = envPtr->extCmdMapPtr; \ - int eclIndex = mapPtr->nuloc - 1 - -#define SetLineInformation(word) \ - envPtr->line = mapPtr->loc[eclIndex].line[(word)]; \ - envPtr->clNext = mapPtr->loc[eclIndex].next[(word)] - -#define PushVarNameWord(i,v,e,f,l,s,sc,word) \ - PushVarName(i,v,e,f,l,s,sc, \ - mapPtr->loc[eclIndex].line[(word)], \ - mapPtr->loc[eclIndex].next[(word)]) - -/* - * Often want to issue one of two versions of an instruction based on whether - * the argument will fit in a single byte or not. This makes it much clearer. - */ - -#define Emit14Inst(nm,idx,envPtr) \ - if (idx <= 255) { \ - TclEmitInstInt1(nm##1,idx,envPtr); \ - } else { \ - TclEmitInstInt4(nm##4,idx,envPtr); \ - } - -/* - * Flags bits used by PushVarName. - */ - -#define TCL_NO_LARGE_INDEX 1 /* Do not return localIndex value > 255 */ -#define TCL_NO_ELEMENT 2 /* Do not push the array element. */ /* *---------------------------------------------------------------------- @@ -2988,247 +2924,6 @@ TclCompileObjectSelfCmd( } /* - *---------------------------------------------------------------------- - * - * PushVarName -- - * - * Procedure used in the compiling where pushing a variable name is - * necessary (append, lappend, set). - * - * Results: - * Returns TCL_OK for a successful compile. Returns TCL_ERROR to defer - * evaluation to runtime. - * - * Side effects: - * Instructions are added to envPtr to execute the "set" command at - * runtime. - * - *---------------------------------------------------------------------- - */ - -static int -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 | TCL_NO_ELEMENT. */ - int *localIndexPtr, /* Must not be NULL. */ - int *simpleVarNamePtr, /* Must not be NULL. */ - int *isScalarPtr, /* Must not be NULL. */ - int line, /* Line the token starts on. */ - int *clNext) /* Reference to offset of next hidden cont. - * line. */ -{ - register const char *p; - const char *name, *elName; - register int i, n; - Tcl_Token *elemTokenPtr = NULL; - int nameChars, elNameChars, simpleVarName, localIndex; - int elemTokenCount = 0, allocedTokens = 0, removedParen = 0; - - /* - * Decide if we can use a frame slot for the var/array name or if we need - * to emit code to compute and push the name at runtime. We use a frame - * slot (entry in the array of local vars) if we are compiling a procedure - * body and if the name is simple text that does not include namespace - * qualifiers. - */ - - simpleVarName = 0; - name = elName = NULL; - nameChars = elNameChars = 0; - localIndex = -1; - - /* - * Check not only that the type is TCL_TOKEN_SIMPLE_WORD, but whether - * curly braces surround the variable name. This really matters for array - * elements to handle things like - * set {x($foo)} 5 - * which raises an undefined var error if we are not careful here. - */ - - if ((varTokenPtr->type == TCL_TOKEN_SIMPLE_WORD) && - (varTokenPtr->start[0] != '{')) { - /* - * A simple variable name. Divide it up into "name" and "elName" - * strings. If it is not a local variable, look it up at runtime. - */ - - simpleVarName = 1; - - name = varTokenPtr[1].start; - nameChars = varTokenPtr[1].size; - if (name[nameChars-1] == ')') { - /* - * last char is ')' => potential array reference. - */ - - for (i=0,p=name ; i<nameChars ; i++,p++) { - if (*p == '(') { - elName = p + 1; - elNameChars = nameChars - i - 2; - nameChars = i; - break; - } - } - - if ((elName != NULL) && elNameChars) { - /* - * An array element, the element name is a simple string: - * assemble the corresponding token. - */ - - elemTokenPtr = TclStackAlloc(interp, sizeof(Tcl_Token)); - allocedTokens = 1; - elemTokenPtr->type = TCL_TOKEN_TEXT; - elemTokenPtr->start = elName; - elemTokenPtr->size = elNameChars; - elemTokenPtr->numComponents = 0; - elemTokenCount = 1; - } - } - } else if (((n = varTokenPtr->numComponents) > 1) - && (varTokenPtr[1].type == TCL_TOKEN_TEXT) - && (varTokenPtr[n].type == TCL_TOKEN_TEXT) - && (varTokenPtr[n].start[varTokenPtr[n].size - 1] == ')')) { - /* - * Check for parentheses inside first token. - */ - - simpleVarName = 0; - for (i = 0, p = varTokenPtr[1].start; - i < varTokenPtr[1].size; i++, p++) { - if (*p == '(') { - simpleVarName = 1; - break; - } - } - if (simpleVarName) { - int remainingChars; - - /* - * Check the last token: if it is just ')', do not count it. - * Otherwise, remove the ')' and flag so that it is restored at - * the end. - */ - - if (varTokenPtr[n].size == 1) { - n--; - } else { - varTokenPtr[n].size--; - removedParen = n; - } - - name = varTokenPtr[1].start; - nameChars = p - varTokenPtr[1].start; - elName = p + 1; - remainingChars = (varTokenPtr[2].start - p) - 1; - elNameChars = (varTokenPtr[n].start-p) + varTokenPtr[n].size - 2; - - if (remainingChars) { - /* - * Make a first token with the extra characters in the first - * token. - */ - - elemTokenPtr = TclStackAlloc(interp, n * sizeof(Tcl_Token)); - allocedTokens = 1; - elemTokenPtr->type = TCL_TOKEN_TEXT; - elemTokenPtr->start = elName; - elemTokenPtr->size = remainingChars; - elemTokenPtr->numComponents = 0; - elemTokenCount = n; - - /* - * Copy the remaining tokens. - */ - - memcpy(elemTokenPtr+1, varTokenPtr+2, - (n-1) * sizeof(Tcl_Token)); - } else { - /* - * Use the already available tokens. - */ - - elemTokenPtr = &varTokenPtr[2]; - elemTokenCount = n - 1; - } - } - } - - if (simpleVarName) { - /* - * See whether name has any namespace separators (::'s). - */ - - int hasNsQualifiers = 0; - - for (i = 0, p = name; i < nameChars; i++, p++) { - if ((*p == ':') && ((i+1) < nameChars) && (*(p+1) == ':')) { - hasNsQualifiers = 1; - break; - } - } - - /* - * Look up the var name's index in the array of local vars in the proc - * frame. If retrieving the var's value and it doesn't already exist, - * push its name and look it up at runtime. - */ - - if (!hasNsQualifiers) { - localIndex = TclFindCompiledLocal(name, nameChars, - 1, envPtr); - if ((flags & TCL_NO_LARGE_INDEX) && (localIndex > 255)) { - /* - * We'll push the name. - */ - - localIndex = -1; - } - } - if (localIndex < 0) { - PushLiteral(envPtr, name, nameChars); - } - - /* - * Compile the element script, if any, and only if not inhibited. [Bug - * 3600328] - */ - - if (elName != NULL && !(flags & TCL_NO_ELEMENT)) { - if (elNameChars) { - envPtr->line = line; - envPtr->clNext = clNext; - TclCompileTokens(interp, elemTokenPtr, elemTokenCount, - envPtr); - } else { - PushLiteral(envPtr, "", 0); - } - } - } else { - /* - * The var name isn't simple: compile and push it. - */ - - envPtr->line = line; - envPtr->clNext = clNext; - CompileTokens(envPtr, varTokenPtr, interp); - } - - if (removedParen) { - varTokenPtr[removedParen].size++; - } - if (allocedTokens) { - TclStackFree(interp, elemTokenPtr); - } - *localIndexPtr = localIndex; - *simpleVarNamePtr = simpleVarName; - *isScalarPtr = (elName == NULL); - return TCL_OK; -} - -/* * Local Variables: * mode: c * c-basic-offset: 4 |