diff options
Diffstat (limited to 'generic/tclDictObj.c')
| -rw-r--r-- | generic/tclDictObj.c | 292 |
1 files changed, 267 insertions, 25 deletions
diff --git a/generic/tclDictObj.c b/generic/tclDictObj.c index ac2cb62..eb3625e 100644 --- a/generic/tclDictObj.c +++ b/generic/tclDictObj.c @@ -76,9 +76,12 @@ static int FinalizeDictWith(ClientData data[], Tcl_Interp *interp, int result); static int DictForNRCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const *objv); +static int DictMapNRCmd(ClientData dummy, Tcl_Interp *interp, + int objc, Tcl_Obj *const *objv); static int DictForLoopCallback(ClientData data[], Tcl_Interp *interp, int result); - +static int DictMapLoopCallback(ClientData data[], + Tcl_Interp *interp, int result); /* * Table of dict subcommand names and implementations. @@ -86,8 +89,8 @@ static int DictForLoopCallback(ClientData data[], static const EnsembleImplMap implementationMap[] = { {"append", DictAppendCmd, TclCompileDictAppendCmd, NULL, NULL, 0 }, - {"create", DictCreateCmd, NULL, NULL, NULL, 0 }, - {"exists", DictExistsCmd, NULL, NULL, NULL, 0 }, + {"create", DictCreateCmd, TclCompileDictCreateCmd, NULL, NULL, 0 }, + {"exists", DictExistsCmd, TclCompileDictExistsCmd, NULL, NULL, 0 }, {"filter", DictFilterCmd, NULL, NULL, NULL, 0 }, {"for", NULL, TclCompileDictForCmd, DictForNRCmd, NULL, 0 }, {"get", DictGetCmd, TclCompileDictGetCmd, NULL, NULL, 0 }, @@ -95,12 +98,13 @@ static const EnsembleImplMap implementationMap[] = { {"info", DictInfoCmd, NULL, NULL, NULL, 0 }, {"keys", DictKeysCmd, NULL, NULL, NULL, 0 }, {"lappend", DictLappendCmd, TclCompileDictLappendCmd, NULL, NULL, 0 }, - {"merge", DictMergeCmd, NULL, NULL, NULL, 0 }, + {"map", NULL, TclCompileDictMapCmd, DictMapNRCmd, NULL, 0 }, + {"merge", DictMergeCmd, TclCompileDictMergeCmd, NULL, NULL, 0 }, {"remove", DictRemoveCmd, NULL, NULL, NULL, 0 }, {"replace", DictReplaceCmd, NULL, NULL, NULL, 0 }, {"set", DictSetCmd, TclCompileDictSetCmd, NULL, NULL, 0 }, {"size", DictSizeCmd, NULL, NULL, NULL, 0 }, - {"unset", DictUnsetCmd, NULL, NULL, NULL, 0 }, + {"unset", DictUnsetCmd, TclCompileDictUnsetCmd, NULL, NULL, 0 }, {"update", DictUpdateCmd, TclCompileDictUpdateCmd, NULL, NULL, 0 }, {"values", DictValuesCmd, NULL, NULL, NULL, 0 }, {"with", DictWithCmd, TclCompileDictWithCmd, NULL, NULL, 0 }, @@ -181,6 +185,23 @@ static const Tcl_HashKeyType chainHashType = { AllocChainEntry, TclFreeObjEntry }; + +/* + * Structure used in implementation of 'dict map' to hold the state that gets + * passed between parts of the implementation. + */ + +typedef struct { + Tcl_Obj *keyVarObj; /* The name of the variable that will have + * keys assigned to it. */ + Tcl_Obj *valueVarObj; /* The name of the variable that will have + * values assigned to it. */ + Tcl_DictSearch search; /* The dictionary search structure. */ + Tcl_Obj *scriptObj; /* The script to evaluate each time through + * the loop. */ + Tcl_Obj *accumulatorObj; /* The dictionary used to accumulate the + * results. */ +} DictMapStorage; /***** START OF FUNCTIONS IMPLEMENTING DICT CORE API *****/ @@ -700,7 +721,8 @@ SetDictFromAny( missingValue: if (interp != NULL) { - Tcl_SetResult(interp, "missing value to go with key", TCL_STATIC); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "missing value to go with key", -1)); Tcl_SetErrorCode(interp, "TCL", "VALUE", "DICTIONARY", NULL); } result = TCL_ERROR; @@ -779,9 +801,9 @@ TclTraceDictPath( } if ((flags & DICT_PATH_CREATE) != DICT_PATH_CREATE) { if (interp != NULL) { - Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "key \"", TclGetString(keyv[i]), - "\" not known in dictionary", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "key \"%s\" not known in dictionary", + TclGetString(keyv[i]))); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "DICT", TclGetString(keyv[i]), NULL); } @@ -953,6 +975,7 @@ Tcl_DictObjGet( if (dictPtr->typePtr != &tclDictType) { int result = SetDictFromAny(interp, dictPtr); if (result != TCL_OK) { + *valuePtrPtr = NULL; return result; } } @@ -1571,9 +1594,9 @@ DictGetCmd( return result; } if (valuePtr == NULL) { - Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "key \"", TclGetString(objv[objc-1]), - "\" not known in dictionary", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "key \"%s\" not known in dictionary", + TclGetString(objv[objc-1]))); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "DICT", TclGetString(objv[objc-1]), NULL); return TCL_ERROR; @@ -2027,6 +2050,7 @@ DictInfoCmd( { Tcl_Obj *dictPtr; Dict *dict; + char *statsStr; if (objc != 2) { Tcl_WrongNumArgs(interp, 1, objv, "dictionary"); @@ -2042,7 +2066,9 @@ DictInfoCmd( } dict = dictPtr->internalRep.otherValuePtr; - Tcl_SetResult(interp, Tcl_HashStats(&dict->table), TCL_DYNAMIC); + statsStr = Tcl_HashStats(&dict->table); + Tcl_SetObjResult(interp, Tcl_NewStringObj(statsStr, -1)); + ckfree(statsStr); return TCL_OK; } @@ -2331,7 +2357,7 @@ DictAppendCmd( * * DictForNRCmd -- * - * This function implements the "dict for" Tcl command. See the user + * These functions implement the "dict for" Tcl command. See the user * documentation for details on what it does, and TIP#111 for the formal * specification. * @@ -2371,8 +2397,8 @@ DictForNRCmd( return TCL_ERROR; } if (varc != 2) { - Tcl_SetResult(interp, "must have exactly two variable names", - TCL_STATIC); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "must have exactly two variable names", -1)); return TCL_ERROR; } searchPtr = TclStackAlloc(interp, sizeof(Tcl_DictSearch)); @@ -2484,13 +2510,15 @@ DictForLoopCallback( */ Tcl_IncrRefCount(valueObj); - if (Tcl_ObjSetVar2(interp, keyVarObj, NULL, keyObj, TCL_LEAVE_ERR_MSG) == NULL) { + if (Tcl_ObjSetVar2(interp, keyVarObj, NULL, keyObj, + TCL_LEAVE_ERR_MSG) == NULL) { TclDecrRefCount(valueObj); result = TCL_ERROR; goto done; } TclDecrRefCount(valueObj); - if (Tcl_ObjSetVar2(interp, valueVarObj, NULL, valueObj, TCL_LEAVE_ERR_MSG) == NULL) { + if (Tcl_ObjSetVar2(interp, valueVarObj, NULL, valueObj, + TCL_LEAVE_ERR_MSG) == NULL) { result = TCL_ERROR; goto done; } @@ -2519,6 +2547,217 @@ DictForLoopCallback( /* *---------------------------------------------------------------------- * + * DictMapNRCmd -- + * + * These functions implement the "dict map" Tcl command. See the user + * documentation for details on what it does, and TIP#405 for the formal + * specification. + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + +static int +DictMapNRCmd( + ClientData dummy, + Tcl_Interp *interp, + int objc, + Tcl_Obj *const *objv) +{ + Interp *iPtr = (Interp *) interp; + Tcl_Obj **varv, *keyObj, *valueObj; + DictMapStorage *storagePtr; + int varc, done; + + if (objc != 4) { + Tcl_WrongNumArgs(interp, 1, objv, + "{keyVar valueVar} dictionary script"); + return TCL_ERROR; + } + + /* + * Parse arguments. + */ + + if (TclListObjGetElements(interp, objv[1], &varc, &varv) != TCL_OK) { + return TCL_ERROR; + } + if (varc != 2) { + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "must have exactly two variable names", -1)); + return TCL_ERROR; + } + storagePtr = TclStackAlloc(interp, sizeof(DictMapStorage)); + if (Tcl_DictObjFirst(interp, objv[2], &storagePtr->search, &keyObj, + &valueObj, &done) != TCL_OK) { + TclStackFree(interp, storagePtr); + return TCL_ERROR; + } + if (done) { + /* + * Note that this exit leaves an empty value in the result (due to + * command calling conventions) but that is OK since an empty value is + * an empty dictionary. + */ + + TclStackFree(interp, storagePtr); + return TCL_OK; + } + TclNewObj(storagePtr->accumulatorObj); + TclListObjGetElements(NULL, objv[1], &varc, &varv); + storagePtr->keyVarObj = varv[0]; + storagePtr->valueVarObj = varv[1]; + storagePtr->scriptObj = objv[3]; + + /* + * Make sure that these objects (which we need throughout the body of the + * loop) don't vanish. Note that the dictionary internal rep is locked + * internally so that updates, shimmering, etc are not a problem. + */ + + Tcl_IncrRefCount(storagePtr->accumulatorObj); + Tcl_IncrRefCount(storagePtr->keyVarObj); + Tcl_IncrRefCount(storagePtr->valueVarObj); + Tcl_IncrRefCount(storagePtr->scriptObj); + + /* + * Stop the value from getting hit in any way by any traces on the key + * variable. + */ + + Tcl_IncrRefCount(valueObj); + if (Tcl_ObjSetVar2(interp, storagePtr->keyVarObj, NULL, keyObj, + TCL_LEAVE_ERR_MSG) == NULL) { + TclDecrRefCount(valueObj); + goto error; + } + if (Tcl_ObjSetVar2(interp, storagePtr->valueVarObj, NULL, valueObj, + TCL_LEAVE_ERR_MSG) == NULL) { + TclDecrRefCount(valueObj); + goto error; + } + TclDecrRefCount(valueObj); + + /* + * Run the script. + */ + + TclNRAddCallback(interp, DictMapLoopCallback, storagePtr, NULL,NULL,NULL); + return TclNREvalObjEx(interp, storagePtr->scriptObj, 0, + iPtr->cmdFramePtr, 3); + + /* + * For unwinding everything on error. + */ + + error: + TclDecrRefCount(storagePtr->keyVarObj); + TclDecrRefCount(storagePtr->valueVarObj); + TclDecrRefCount(storagePtr->scriptObj); + TclDecrRefCount(storagePtr->accumulatorObj); + Tcl_DictObjDone(&storagePtr->search); + TclStackFree(interp, storagePtr); + return TCL_ERROR; +} + +static int +DictMapLoopCallback( + ClientData data[], + Tcl_Interp *interp, + int result) +{ + Interp *iPtr = (Interp *) interp; + DictMapStorage *storagePtr = data[0]; + Tcl_Obj *keyObj, *valueObj; + int done; + + /* + * Process the result from the previous execution of the script body. + */ + + if (result == TCL_CONTINUE) { + result = TCL_OK; + } else if (result != TCL_OK) { + if (result == TCL_BREAK) { + Tcl_ResetResult(interp); + result = TCL_OK; + } else if (result == TCL_ERROR) { + Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( + "\n (\"dict map\" body line %d)", + Tcl_GetErrorLine(interp))); + } + goto done; + } else { + keyObj = Tcl_ObjGetVar2(interp, storagePtr->keyVarObj, NULL, + TCL_LEAVE_ERR_MSG); + if (keyObj == NULL) { + result = TCL_ERROR; + goto done; + } + Tcl_DictObjPut(NULL, storagePtr->accumulatorObj, keyObj, + Tcl_GetObjResult(interp)); + } + + /* + * Get the next mapping from the dictionary. + */ + + Tcl_DictObjNext(&storagePtr->search, &keyObj, &valueObj, &done); + if (done) { + Tcl_SetObjResult(interp, storagePtr->accumulatorObj); + goto done; + } + + /* + * Stop the value from getting hit in any way by any traces on the key + * variable. + */ + + Tcl_IncrRefCount(valueObj); + if (Tcl_ObjSetVar2(interp, storagePtr->keyVarObj, NULL, keyObj, + TCL_LEAVE_ERR_MSG) == NULL) { + TclDecrRefCount(valueObj); + result = TCL_ERROR; + goto done; + } + if (Tcl_ObjSetVar2(interp, storagePtr->valueVarObj, NULL, valueObj, + TCL_LEAVE_ERR_MSG) == NULL) { + TclDecrRefCount(valueObj); + result = TCL_ERROR; + goto done; + } + TclDecrRefCount(valueObj); + + /* + * Run the script. + */ + + TclNRAddCallback(interp, DictMapLoopCallback, storagePtr, NULL,NULL,NULL); + return TclNREvalObjEx(interp, storagePtr->scriptObj, 0, + iPtr->cmdFramePtr, 3); + + /* + * For unwinding everything once the iterating is done. + */ + + done: + TclDecrRefCount(storagePtr->keyVarObj); + TclDecrRefCount(storagePtr->valueVarObj); + TclDecrRefCount(storagePtr->scriptObj); + TclDecrRefCount(storagePtr->accumulatorObj); + Tcl_DictObjDone(&storagePtr->search); + TclStackFree(interp, storagePtr); + return result; +} + +/* + *---------------------------------------------------------------------- + * * DictSetCmd -- * * This function implements the "dict set" Tcl command. See the user @@ -2787,8 +3026,8 @@ DictFilterCmd( return TCL_ERROR; } if (varc != 2) { - Tcl_SetResult(interp, "must have exactly two variable names", - TCL_STATIC); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "must have exactly two variable names", -1)); return TCL_ERROR; } keyVarObj = varv[0]; @@ -2828,16 +3067,19 @@ DictFilterCmd( if (Tcl_ObjSetVar2(interp, keyVarObj, NULL, keyObj, TCL_LEAVE_ERR_MSG) == NULL) { Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "couldn't set key variable: \"", - TclGetString(keyVarObj), "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "couldn't set key variable: \"%s\"", + TclGetString(keyVarObj))); result = TCL_ERROR; goto abnormalResult; } if (Tcl_ObjSetVar2(interp, valueVarObj, NULL, valueObj, TCL_LEAVE_ERR_MSG) == NULL) { Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "couldn't set value variable: \"", - TclGetString(valueVarObj), "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "couldn't set value variable: \"%s\"", + TclGetString(valueVarObj))); + result = TCL_ERROR; goto abnormalResult; } @@ -3438,7 +3680,7 @@ TclInitDictCmd( { return TclMakeEnsemble(interp, "dict", implementationMap); } - + /* * Local Variables: * mode: c |