diff options
Diffstat (limited to 'generic/tclNamesp.c')
| -rw-r--r-- | generic/tclNamesp.c | 3311 |
1 files changed, 2623 insertions, 688 deletions
diff --git a/generic/tclNamesp.c b/generic/tclNamesp.c index 8f2f10e..4b72e03 100644 --- a/generic/tclNamesp.c +++ b/generic/tclNamesp.c @@ -5,7 +5,8 @@ * commands and global variables. The global :: namespace is the * traditional Tcl "global" scope. Other namespaces are created as * children of the global namespace. These other namespaces contain - * special-purpose commands and variables for packages. + * special-purpose commands and variables for packages. Also includes the + * TIP#112 ensemble machinery. * * Copyright (c) 1993-1997 Lucent Technologies. * Copyright (c) 1997 Sun Microsystems, Inc. @@ -24,7 +25,6 @@ */ #include "tclInt.h" -#include "tclCompile.h" /* for TclLogCommandInfo visibility */ /* * Thread-local storage used to avoid having a global lock on data that is not @@ -53,12 +53,12 @@ static Tcl_ThreadDataKey dataKey; */ typedef struct ResolvedNsName { - Namespace *nsPtr; /* A cached pointer to the Namespace that the - * name resolved to. */ - Namespace *refNsPtr; /* Points to the namespace context in which - * the name was resolved. NULL if the name is - * fully qualified and thus the resolution - * does not depend on the context. */ + Namespace *nsPtr; /* A cached pointer to the Namespace that the + * name resolved to. */ + Namespace *refNsPtr; /* Points to the namespace context in which the + * name was resolved. NULL if the name is fully + * qualified and thus the resolution does not + * depend on the context. */ int refCount; /* Reference count: 1 for each nsName object * that has a pointer to this ResolvedNsName * structure as its internal rep. This @@ -67,6 +67,82 @@ typedef struct ResolvedNsName { } ResolvedNsName; /* + * The client data for an ensemble command. This consists of the table of + * commands that are actually exported by the namespace, and an epoch counter + * that, combined with the exportLookupEpoch field of the namespace structure, + * defines whether the table contains valid data or will need to be recomputed + * next time the ensemble command is called. + */ + +typedef struct EnsembleConfig { + Namespace *nsPtr; /* The namspace backing this ensemble up. */ + Tcl_Command token; /* The token for the command that provides + * ensemble support for the namespace, or NULL + * if the command has been deleted (or never + * existed; the global namespace never has an + * ensemble command.) */ + int epoch; /* The epoch at which this ensemble's table of + * exported commands is valid. */ + char **subcommandArrayPtr; /* Array of ensemble subcommand names. At all + * consistent points, this will have the same + * number of entries as there are entries in + * the subcommandTable hash. */ + Tcl_HashTable subcommandTable; + /* Hash table of ensemble subcommand names, + * which are its keys so this also provides + * the storage management for those subcommand + * names. The contents of the entry values are + * object version the prefix lists to use when + * substituting for the command/subcommand to + * build the ensemble implementation command. + * Has to be stored here as well as in + * subcommandDict because that field is NULL + * when we are deriving the ensemble from the + * namespace exports list. FUTURE WORK: use + * object hash table here. */ + struct EnsembleConfig *next;/* The next ensemble in the linked list of + * ensembles associated with a namespace. If + * this field points to this ensemble, the + * structure has already been unlinked from + * all lists, and cannot be found by scanning + * the list from the namespace's ensemble + * field. */ + int flags; /* ORed combo of TCL_ENSEMBLE_PREFIX, ENS_DEAD + * and ENSEMBLE_COMPILE. */ + + /* OBJECT FIELDS FOR ENSEMBLE CONFIGURATION */ + + Tcl_Obj *subcommandDict; /* Dictionary providing mapping from + * subcommands to their implementing command + * prefixes, or NULL if we are to build the + * map automatically from the namespace + * exports. */ + Tcl_Obj *subcmdList; /* List of commands that this ensemble + * actually provides, and whose implementation + * will be built using the subcommandDict (if + * present and defined) and by simple mapping + * to the namespace otherwise. If NULL, + * indicates that we are using the (dynamic) + * list of currently exported commands. */ + Tcl_Obj *unknownHandler; /* Script prefix used to handle the case when + * no match is found (according to the rule + * defined by flag bit TCL_ENSEMBLE_PREFIX) or + * NULL to use the default error-generating + * behaviour. The script execution gets all + * the arguments to the ensemble command + * (including objv[0]) and will have the + * results passed directly back to the caller + * (including the error code) unless the code + * is TCL_CONTINUE in which case the + * subcommand will be reparsed by the ensemble + * core, presumably because the ensemble + * itself has been updated. */ +} EnsembleConfig; + +#define ENS_DEAD 0x1 /* Flag value to say that the ensemble is dead + * and on its way out. */ + +/* * Declarations for functions local to this file: */ @@ -91,8 +167,6 @@ static int GetNamespaceFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Namespace **nsPtrPtr); static int InvokeImportedCmd(ClientData clientData, Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); -static int InvokeImportedNRCmd(ClientData clientData, - Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); static int NamespaceChildrenCmd(ClientData dummy, Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); static int NamespaceCodeCmd(ClientData dummy, Tcl_Interp *interp, @@ -101,10 +175,10 @@ static int NamespaceCurrentCmd(ClientData dummy, Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); static int NamespaceDeleteCmd(ClientData dummy,Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); +static int NamespaceEnsembleCmd(ClientData dummy, + Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); static int NamespaceEvalCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); -static int NRNamespaceEvalCmd(ClientData dummy, - Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); static int NamespaceExistsCmd(ClientData dummy,Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int NamespaceExportCmd(ClientData dummy,Tcl_Interp *interp, @@ -116,8 +190,6 @@ static int NamespaceImportCmd(ClientData dummy,Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int NamespaceInscopeCmd(ClientData dummy, Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); -static int NRNamespaceInscopeCmd(ClientData dummy, - Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); static int NamespaceOriginCmd(ClientData dummy,Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int NamespaceParentCmd(ClientData dummy,Tcl_Interp *interp, @@ -131,14 +203,25 @@ static int NamespaceTailCmd(ClientData dummy, Tcl_Interp *interp, static int NamespaceUpvarCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int NamespaceUnknownCmd(ClientData dummy, - Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); + Tcl_Interp *interp, int objc, + Tcl_Obj *const objv[]); static int NamespaceWhichCmd(ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); static int SetNsNameFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr); +static int NsEnsembleImplementationCmd(ClientData clientData, + Tcl_Interp *interp,int objc,Tcl_Obj *const objv[]); +static void BuildEnsembleConfig(EnsembleConfig *ensemblePtr); +static int NsEnsembleStringOrder(const void *strPtr1, + const void *strPtr2); +static void DeleteEnsembleConfig(ClientData clientData); +static void MakeCachedEnsembleCommand(Tcl_Obj *objPtr, + EnsembleConfig *ensemblePtr, + const char *subcmdName, Tcl_Obj *prefixObjPtr); +static void FreeEnsembleCmdRep(Tcl_Obj *objPtr); +static void DupEnsembleCmdRep(Tcl_Obj *objPtr, Tcl_Obj *copyPtr); +static void StringOfEnsembleCmdRep(Tcl_Obj *objPtr); static void UnlinkNsPath(Namespace *nsPtr); -static Tcl_NRPostProc NsEval_Callback; - /* * This structure defines a Tcl object type that contains a namespace * reference. It is used in commands that take the name of a namespace as an @@ -146,7 +229,7 @@ static Tcl_NRPostProc NsEval_Callback; * the object. */ -static const Tcl_ObjType nsNameType = { +static Tcl_ObjType nsNameType = { "nsName", /* the type's name */ FreeNsNameInternalRep, /* freeIntRepProc */ DupNsNameInternalRep, /* dupIntRepProc */ @@ -155,31 +238,18 @@ static const Tcl_ObjType nsNameType = { }; /* - * Array of values describing how to implement each standard subcommand of the - * "namespace" command. + * This structure defines a Tcl object type that contains a reference to an + * ensemble subcommand (e.g. the "length" in [string length ab]). It is used + * to cache the mapping between the subcommand itself and the real command + * that implements it. */ -static const EnsembleImplMap defaultNamespaceMap[] = { - {"children", NamespaceChildrenCmd, TclCompileBasic0To2ArgCmd, NULL, NULL, 0}, - {"code", NamespaceCodeCmd, TclCompileNamespaceCodeCmd, NULL, NULL, 0}, - {"current", NamespaceCurrentCmd, TclCompileNamespaceCurrentCmd, NULL, NULL, 0}, - {"delete", NamespaceDeleteCmd, TclCompileBasicMin0ArgCmd, NULL, NULL, 0}, - {"ensemble", TclNamespaceEnsembleCmd, NULL, NULL, NULL, 0}, - {"eval", NamespaceEvalCmd, NULL, NRNamespaceEvalCmd, NULL, 0}, - {"exists", NamespaceExistsCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0}, - {"export", NamespaceExportCmd, TclCompileBasicMin0ArgCmd, NULL, NULL, 0}, - {"forget", NamespaceForgetCmd, TclCompileBasicMin0ArgCmd, NULL, NULL, 0}, - {"import", NamespaceImportCmd, TclCompileBasicMin0ArgCmd, NULL, NULL, 0}, - {"inscope", NamespaceInscopeCmd, NULL, NRNamespaceInscopeCmd, NULL, 0}, - {"origin", NamespaceOriginCmd, TclCompileNamespaceOriginCmd, NULL, NULL, 0}, - {"parent", NamespaceParentCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0}, - {"path", NamespacePathCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0}, - {"qualifiers", NamespaceQualifiersCmd, TclCompileNamespaceQualifiersCmd, NULL, NULL, 0}, - {"tail", NamespaceTailCmd, TclCompileNamespaceTailCmd, NULL, NULL, 0}, - {"unknown", NamespaceUnknownCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0}, - {"upvar", NamespaceUpvarCmd, TclCompileNamespaceUpvarCmd, NULL, NULL, 0}, - {"which", NamespaceWhichCmd, TclCompileNamespaceWhichCmd, NULL, NULL, 0}, - {NULL, NULL, NULL, NULL, NULL, 0} +Tcl_ObjType tclEnsembleCmdType = { + "ensembleCommand", /* the type's name */ + FreeEnsembleCmdRep, /* freeIntRepProc */ + DupEnsembleCmdRep, /* dupIntRepProc */ + StringOfEnsembleCmdRep, /* updateStringProc */ + NULL /* setFromAnyProc */ }; /* @@ -342,8 +412,7 @@ Tcl_PushCallFrame( framePtr->compiledLocals = NULL; framePtr->clientData = NULL; framePtr->localCachePtr = NULL; - framePtr->tailcallPtr = NULL; - + /* * Push the new call frame onto the interpreter's stack of procedure call * frames making it the current frame. @@ -351,7 +420,6 @@ Tcl_PushCallFrame( iPtr->framePtr = framePtr; iPtr->varFramePtr = framePtr; - return TCL_OK; } @@ -397,7 +465,7 @@ Tcl_PopCallFrame( if (framePtr->varTablePtr != NULL) { TclDeleteVars(iPtr, framePtr->varTablePtr); - ckfree(framePtr->varTablePtr); + ckfree((char *) framePtr->varTablePtr); framePtr->varTablePtr = NULL; } if (framePtr->numCompiledLocals > 0) { @@ -421,10 +489,6 @@ Tcl_PopCallFrame( Tcl_DeleteNamespace((Tcl_Namespace *) nsPtr); } framePtr->nsPtr = NULL; - - if (framePtr->tailcallPtr) { - TclSetTailcall(interp, framePtr->tailcallPtr); - } } /* @@ -465,7 +529,7 @@ TclPushStackFrame( * treated as references to namespace * variables. */ { - *framePtrPtr = TclStackAlloc(interp, sizeof(CallFrame)); + *framePtrPtr = (Tcl_CallFrame *) TclStackAlloc(interp, sizeof(CallFrame)); return Tcl_PushCallFrame(interp, *framePtrPtr, namespacePtr, isProcCallFrame); } @@ -474,7 +538,7 @@ void TclPopStackFrame( Tcl_Interp *interp) /* Interpreter with call frame to pop. */ { - CallFrame *freePtr = ((Interp *) interp)->framePtr; + CallFrame *freePtr = ((Interp *)interp)->framePtr; Tcl_PopCallFrame(interp); TclStackFree(interp, freePtr); @@ -505,9 +569,9 @@ EstablishErrorCodeTraces( const char *name2, int flags) { - Tcl_TraceVar2(interp, "errorCode", NULL, TCL_GLOBAL_ONLY|TCL_TRACE_READS, + Tcl_TraceVar(interp, "errorCode", TCL_GLOBAL_ONLY | TCL_TRACE_READS, ErrorCodeRead, NULL); - Tcl_TraceVar2(interp, "errorCode", NULL, TCL_GLOBAL_ONLY|TCL_TRACE_UNSETS, + Tcl_TraceVar(interp, "errorCode", TCL_GLOBAL_ONLY | TCL_TRACE_UNSETS, EstablishErrorCodeTraces, NULL); return NULL; } @@ -537,7 +601,7 @@ ErrorCodeRead( const char *name2, int flags) { - Interp *iPtr = (Interp *) interp; + Interp *iPtr = (Interp *)interp; if (Tcl_InterpDeleted(interp) || !(iPtr->flags & ERR_LEGACY_COPY)) { return NULL; @@ -579,9 +643,9 @@ EstablishErrorInfoTraces( const char *name2, int flags) { - Tcl_TraceVar2(interp, "errorInfo", NULL, TCL_GLOBAL_ONLY|TCL_TRACE_READS, + Tcl_TraceVar(interp, "errorInfo", TCL_GLOBAL_ONLY | TCL_TRACE_READS, ErrorInfoRead, NULL); - Tcl_TraceVar2(interp, "errorInfo", NULL, TCL_GLOBAL_ONLY|TCL_TRACE_UNSETS, + Tcl_TraceVar(interp, "errorInfo", TCL_GLOBAL_ONLY | TCL_TRACE_UNSETS, EstablishErrorInfoTraces, NULL); return NULL; } @@ -717,10 +781,9 @@ Tcl_CreateNamespace( */ if (*name == '\0') { - Tcl_SetObjResult(interp, Tcl_NewStringObj("can't create namespace" - " \"\": only global namespace can have empty name", -1)); - Tcl_SetErrorCode(interp, "TCL", "OPERATION", "NAMESPACE", - "CREATEGLOBAL", NULL); + Tcl_ResetResult(interp); + Tcl_AppendResult(interp, "can't create namespace \"\": " + "only global namespace can have empty name", NULL); Tcl_DStringFree(&tmpBuffer); return NULL; } @@ -748,18 +811,9 @@ Tcl_CreateNamespace( * already exist in the parent namespace. */ - if ( -#ifndef BREAK_NAMESPACE_COMPAT - Tcl_FindHashEntry(&parentPtr->childTable, simpleName) != NULL -#else - parentPtr->childTablePtr != NULL && - Tcl_FindHashEntry(parentPtr->childTablePtr, simpleName) != NULL -#endif - ) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "can't create namespace \"%s\": already exists", name)); - Tcl_SetErrorCode(interp, "TCL", "OPERATION", "NAMESPACE", - "CREATEEXISTING", NULL); + if (Tcl_FindHashEntry(&parentPtr->childTable, simpleName) != NULL) { + Tcl_AppendResult(interp, "can't create namespace \"", name, + "\": already exists", NULL); Tcl_DStringFree(&tmpBuffer); return NULL; } @@ -770,19 +824,14 @@ Tcl_CreateNamespace( */ doCreate: - nsPtr = ckalloc(sizeof(Namespace)); - nameLen = strlen(simpleName) + 1; - nsPtr->name = ckalloc(nameLen); - memcpy(nsPtr->name, simpleName, nameLen); + nsPtr = (Namespace *) ckalloc(sizeof(Namespace)); + nsPtr->name = ckalloc((unsigned) (strlen(simpleName)+1)); + strcpy(nsPtr->name, simpleName); nsPtr->fullName = NULL; /* Set below. */ nsPtr->clientData = clientData; nsPtr->deleteProc = deleteProc; nsPtr->parentPtr = parentPtr; -#ifndef BREAK_NAMESPACE_COMPAT Tcl_InitHashTable(&nsPtr->childTable, TCL_STRING_KEYS); -#else - nsPtr->childTablePtr = NULL; -#endif nsPtr->nsId = ++(tsdPtr->numNsCreated); nsPtr->interp = interp; nsPtr->flags = 0; @@ -804,12 +853,10 @@ Tcl_CreateNamespace( nsPtr->commandPathLength = 0; nsPtr->commandPathArray = NULL; nsPtr->commandPathSourceList = NULL; - nsPtr->earlyDeleteProc = NULL; if (parentPtr != NULL) { - entryPtr = Tcl_CreateHashEntry( - TclGetNamespaceChildTable((Tcl_Namespace *) parentPtr), - simpleName, &newEntry); + entryPtr = Tcl_CreateHashEntry(&parentPtr->childTable, simpleName, + &newEntry); Tcl_SetHashValue(entryPtr, nsPtr); } else { /* @@ -835,9 +882,10 @@ Tcl_CreateNamespace( if (ancestorPtr != globalNsPtr) { register Tcl_DString *tempPtr = namePtr; - TclDStringAppendLiteral(buffPtr, "::"); + Tcl_DStringAppend(buffPtr, "::", 2); Tcl_DStringAppend(buffPtr, ancestorPtr->name, -1); - TclDStringAppendDString(buffPtr, namePtr); + Tcl_DStringAppend(buffPtr, Tcl_DStringValue(namePtr), + Tcl_DStringLength(namePtr)); /* * Clear the unwanted buffer or we end up appending to previous @@ -845,7 +893,7 @@ Tcl_CreateNamespace( * very wrong (and strange). */ - TclDStringClear(namePtr); + Tcl_DStringSetLength(namePtr, 0); /* * Now swap the buffer pointers so that we build in the other @@ -860,7 +908,7 @@ Tcl_CreateNamespace( name = Tcl_DStringValue(namePtr); nameLen = Tcl_DStringLength(namePtr); - nsPtr->fullName = ckalloc(nameLen + 1); + nsPtr->fullName = ckalloc((unsigned) (nameLen+1)); memcpy(nsPtr->fullName, name, (unsigned) nameLen + 1); Tcl_DStringFree(&buffer1); @@ -868,16 +916,6 @@ Tcl_CreateNamespace( Tcl_DStringFree(&tmpBuffer); /* - * If compilation of commands originating from the parent NS is - * suppressed, suppress it for commands originating in this one too. - */ - - if (nsPtr->parentPtr != NULL && - nsPtr->parentPtr->flags & NS_SUPPRESS_COMPILATION) { - nsPtr->flags |= NS_SUPPRESS_COMPILATION; - } - - /* * Return a pointer to the new namespace. */ @@ -912,50 +950,6 @@ Tcl_DeleteNamespace( Namespace *globalNsPtr = (Namespace *) TclGetGlobalNamespace((Tcl_Interp *) iPtr); Tcl_HashEntry *entryPtr; - Tcl_HashSearch search; - Command *cmdPtr; - - /* - * Give anyone interested - notably TclOO - a chance to use this namespace - * normally despite the fact that the namespace is going to go. Allows the - * calling of destructors. Will only be called once (unless re-established - * by the called function). [Bug 2950259] - * - * Note that setting this field requires access to the internal definition - * of namespaces, so it should only be accessed by code that knows about - * being careful with reentrancy. - */ - - if (nsPtr->earlyDeleteProc != NULL) { - Tcl_NamespaceDeleteProc *earlyDeleteProc = nsPtr->earlyDeleteProc; - - nsPtr->earlyDeleteProc = NULL; - nsPtr->activationCount++; - earlyDeleteProc(nsPtr->clientData); - nsPtr->activationCount--; - } - - /* - * Delete all coroutine commands now: break the circular ref cycle between - * the namespace and the coroutine command [Bug 2724403]. This code is - * essentially duplicated in TclTeardownNamespace() for all other - * commands. Don't optimize to Tcl_NextHashEntry() because of traces. - * - * NOTE: we could avoid traversing the ns's command list by keeping a - * separate list of coros. - */ - - for (entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search); - entryPtr != NULL;) { - cmdPtr = Tcl_GetHashValue(entryPtr); - if (cmdPtr->nreProc == TclNRInterpCoroutine) { - Tcl_DeleteCommandFromToken((Tcl_Interp *) iPtr, - (Tcl_Command) cmdPtr); - entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search); - } else { - entryPtr = Tcl_NextHashEntry(&search); - } - } /* * If the namespace has associated ensemble commands, delete them first. @@ -1006,9 +1000,8 @@ Tcl_DeleteNamespace( if (nsPtr->activationCount - (nsPtr == globalNsPtr) > 0) { nsPtr->flags |= NS_DYING; if (nsPtr->parentPtr != NULL) { - entryPtr = Tcl_FindHashEntry( - TclGetNamespaceChildTable((Tcl_Namespace *) - nsPtr->parentPtr), nsPtr->name); + entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable, + nsPtr->name); if (entryPtr != NULL) { Tcl_DeleteHashEntry(entryPtr); } @@ -1037,14 +1030,7 @@ Tcl_DeleteNamespace( TclDeleteNamespaceVars(nsPtr); -#ifndef BREAK_NAMESPACE_COMPAT Tcl_DeleteHashTable(&nsPtr->childTable); -#else - if (nsPtr->childTablePtr != NULL) { - Tcl_DeleteHashTable(nsPtr->childTablePtr); - ckfree(nsPtr->childTablePtr); - } -#endif Tcl_DeleteHashTable(&nsPtr->cmdTable); /* @@ -1140,9 +1126,8 @@ TclTeardownNamespace( */ if (nsPtr->parentPtr != NULL) { - entryPtr = Tcl_FindHashEntry( - TclGetNamespaceChildTable((Tcl_Namespace *) - nsPtr->parentPtr), nsPtr->name); + entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable, + nsPtr->name); if (entryPtr != NULL) { Tcl_DeleteHashEntry(entryPtr); } @@ -1159,7 +1144,6 @@ TclTeardownNamespace( } if (nsPtr->commandPathSourceList != NULL) { NamespacePathEntry *nsPathPtr = nsPtr->commandPathSourceList; - do { if (nsPathPtr->nsPtr != NULL && nsPathPtr->creatorNsPtr != NULL) { nsPathPtr->creatorNsPtr->cmdRefEpoch++; @@ -1180,23 +1164,12 @@ TclTeardownNamespace( * Don't optimize to Tcl_NextHashEntry() because of traces. */ -#ifndef BREAK_NAMESPACE_COMPAT for (entryPtr = Tcl_FirstHashEntry(&nsPtr->childTable, &search); entryPtr != NULL; entryPtr = Tcl_FirstHashEntry(&nsPtr->childTable, &search)) { childNsPtr = Tcl_GetHashValue(entryPtr); Tcl_DeleteNamespace(childNsPtr); } -#else - if (nsPtr->childTablePtr != NULL) { - for (entryPtr = Tcl_FirstHashEntry(nsPtr->childTablePtr, &search); - entryPtr != NULL; - entryPtr = Tcl_FirstHashEntry(nsPtr->childTablePtr,&search)) { - childNsPtr = Tcl_GetHashValue(entryPtr); - Tcl_DeleteNamespace(childNsPtr); - } - } -#endif /* * Free the namespace's export pattern array. @@ -1206,7 +1179,7 @@ TclTeardownNamespace( for (i = 0; i < nsPtr->numExportPatterns; i++) { ckfree(nsPtr->exportArrayPtr[i]); } - ckfree(nsPtr->exportArrayPtr); + ckfree((char *) nsPtr->exportArrayPtr); nsPtr->exportArrayPtr = NULL; nsPtr->numExportPatterns = 0; nsPtr->maxExportPatterns = 0; @@ -1217,7 +1190,7 @@ TclTeardownNamespace( */ if (nsPtr->deleteProc != NULL) { - nsPtr->deleteProc(nsPtr->clientData); + (*nsPtr->deleteProc)(nsPtr->clientData); } nsPtr->deleteProc = NULL; nsPtr->clientData = NULL; @@ -1260,34 +1233,8 @@ NamespaceFree( ckfree(nsPtr->name); ckfree(nsPtr->fullName); - ckfree(nsPtr); -} - -/* - *---------------------------------------------------------------------- - * - * TclNsDecrRefCount -- - * - * Drops a reference to a namespace and frees it if the namespace has - * been deleted and the last reference has just been dropped. - * - * Results: - * None. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ -void -TclNsDecrRefCount( - Namespace *nsPtr) -{ - nsPtr->refCount--; - if ((nsPtr->refCount == 0) && (nsPtr->flags & NS_DEAD)) { - NamespaceFree(nsPtr); - } + ckfree((char *) nsPtr); } /* @@ -1352,7 +1299,7 @@ Tcl_Export( for (i = 0; i < nsPtr->numExportPatterns; i++) { ckfree(nsPtr->exportArrayPtr[i]); } - ckfree(nsPtr->exportArrayPtr); + ckfree((char *) nsPtr->exportArrayPtr); nsPtr->exportArrayPtr = NULL; TclInvalidateNsCmdLookup(nsPtr); nsPtr->numExportPatterns = 0; @@ -1368,9 +1315,8 @@ Tcl_Export( &exportNsPtr, &dummyPtr, &dummyPtr, &simplePattern); if ((exportNsPtr != nsPtr) || (strcmp(pattern, simplePattern) != 0)) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf("invalid export pattern" - " \"%s\": pattern can't specify a namespace", pattern)); - Tcl_SetErrorCode(interp, "TCL", "EXPORT", "INVALID", NULL); + Tcl_AppendResult(interp, "invalid export pattern \"", pattern, + "\": pattern can't specify a namespace", NULL); return TCL_ERROR; } @@ -1399,7 +1345,8 @@ Tcl_Export( if (neededElems > nsPtr->maxExportPatterns) { nsPtr->maxExportPatterns = nsPtr->maxExportPatterns ? 2 * nsPtr->maxExportPatterns : INIT_EXPORT_PATTERNS; - nsPtr->exportArrayPtr = ckrealloc(nsPtr->exportArrayPtr, + nsPtr->exportArrayPtr = (char **) + ckrealloc((char *) nsPtr->exportArrayPtr, sizeof(char *) * nsPtr->maxExportPatterns); } @@ -1408,7 +1355,7 @@ Tcl_Export( */ len = strlen(pattern); - patternCpy = ckalloc(len + 1); + patternCpy = ckalloc((unsigned) (len + 1)); memcpy(patternCpy, pattern, (unsigned) len + 1); nsPtr->exportArrayPtr[nsPtr->numExportPatterns] = patternCpy; @@ -1574,30 +1521,27 @@ Tcl_Import( */ if (strlen(pattern) == 0) { - Tcl_SetObjResult(interp, Tcl_NewStringObj("empty import pattern",-1)); - Tcl_SetErrorCode(interp, "TCL", "IMPORT", "EMPTY", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj("empty import pattern", -1)); return TCL_ERROR; } TclGetNamespaceForQualName(interp, pattern, nsPtr, TCL_NAMESPACE_ONLY, &importNsPtr, &dummyPtr, &dummyPtr, &simplePattern); if (importNsPtr == NULL) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "unknown namespace in import pattern \"%s\"", pattern)); + Tcl_AppendResult(interp, "unknown namespace in import pattern \"", + pattern, "\"", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", pattern, NULL); return TCL_ERROR; } if (importNsPtr == nsPtr) { if (pattern == simplePattern) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "no namespace specified in import pattern \"%s\"", - pattern)); - Tcl_SetErrorCode(interp, "TCL", "IMPORT", "ORIGIN", NULL); + Tcl_AppendResult(interp, + "no namespace specified in import pattern \"", pattern, + "\"", NULL); } else { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "import pattern \"%s\" tries to import from namespace" - " \"%s\" into itself", pattern, importNsPtr->name)); - Tcl_SetErrorCode(interp, "TCL", "IMPORT", "SELF", NULL); + Tcl_AppendResult(interp, "import pattern \"", pattern, + "\" tries to import from namespace \"", + importNsPtr->name, "\" into itself", NULL); } return TCL_ERROR; } @@ -1620,7 +1564,6 @@ Tcl_Import( for (hPtr = Tcl_FirstHashEntry(&importNsPtr->cmdTable, &search); (hPtr != NULL); hPtr = Tcl_NextHashEntry(&search)) { char *cmdName = Tcl_GetHashKey(&importNsPtr->cmdTable, hPtr); - if (Tcl_StringMatch(cmdName, simplePattern) && DoImport(interp, nsPtr, hPtr, cmdName, pattern, importNsPtr, allowOverwrite) == TCL_ERROR) { @@ -1668,8 +1611,7 @@ DoImport( */ while (!exported && (i < importNsPtr->numExportPatterns)) { - exported |= Tcl_StringMatch(cmdName, - importNsPtr->exportArrayPtr[i++]); + exported |= Tcl_StringMatch(cmdName, importNsPtr->exportArrayPtr[i++]); } if (!exported) { return TCL_OK; @@ -1697,7 +1639,7 @@ DoImport( Tcl_DStringInit(&ds); Tcl_DStringAppend(&ds, nsPtr->fullName, -1); if (nsPtr != ((Interp *) interp)->globalNsPtr) { - TclDStringAppendLiteral(&ds, "::"); + Tcl_DStringAppend(&ds, "::", 2); } Tcl_DStringAppend(&ds, cmdName, -1); @@ -1709,27 +1651,25 @@ DoImport( cmdPtr = Tcl_GetHashValue(hPtr); if (found != NULL && cmdPtr->deleteProc == DeleteImportedCmd) { Command *overwrite = Tcl_GetHashValue(found); - Command *linkCmd = cmdPtr; - - while (linkCmd->deleteProc == DeleteImportedCmd) { - dataPtr = linkCmd->objClientData; - linkCmd = dataPtr->realCmdPtr; - if (overwrite == linkCmd) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "import pattern \"%s\" would create a loop" - " containing command \"%s\"", - pattern, Tcl_DStringValue(&ds))); + Command *link = cmdPtr; + + while (link->deleteProc == DeleteImportedCmd) { + ImportedCmdData *dataPtr = link->objClientData; + + link = dataPtr->realCmdPtr; + if (overwrite == link) { + Tcl_AppendResult(interp, "import pattern \"", pattern, + "\" would create a loop containing command \"", + Tcl_DStringValue(&ds), "\"", NULL); Tcl_DStringFree(&ds); - Tcl_SetErrorCode(interp, "TCL", "IMPORT", "LOOP", NULL); return TCL_ERROR; } } } - dataPtr = ckalloc(sizeof(ImportedCmdData)); - importedCmd = Tcl_NRCreateCommand(interp, Tcl_DStringValue(&ds), - InvokeImportedCmd, InvokeImportedNRCmd, dataPtr, - DeleteImportedCmd); + dataPtr = (ImportedCmdData *) ckalloc(sizeof(ImportedCmdData)); + importedCmd = Tcl_CreateObjCommand(interp, Tcl_DStringValue(&ds), + InvokeImportedCmd, dataPtr, DeleteImportedCmd); dataPtr->realCmdPtr = cmdPtr; dataPtr->selfPtr = (Command *) importedCmd; dataPtr->selfPtr->compileProc = cmdPtr->compileProc; @@ -1740,7 +1680,7 @@ DoImport( * and add it to the import ref list in the "real" command. */ - refPtr = ckalloc(sizeof(ImportRef)); + refPtr = (ImportRef *) ckalloc(sizeof(ImportRef)); refPtr->importedCmdPtr = (Command *) importedCmd; refPtr->nextPtr = cmdPtr->importRefPtr; cmdPtr->importRefPtr = refPtr; @@ -1758,9 +1698,8 @@ DoImport( return TCL_OK; } } - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "can't import command \"%s\": already exists", cmdName)); - Tcl_SetErrorCode(interp, "TCL", "IMPORT", "OVERWRITE", NULL); + Tcl_AppendResult(interp, "can't import command \"", cmdName, + "\": already exists", NULL); return TCL_ERROR; } return TCL_OK; @@ -1827,9 +1766,9 @@ Tcl_ForgetImport( &sourceNsPtr, &dummyPtr, &dummyPtr, &simplePattern); if (sourceNsPtr == NULL) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "unknown namespace in namespace forget pattern \"%s\"", - pattern)); + Tcl_AppendResult(interp, + "unknown namespace in namespace forget pattern \"", + pattern, "\"", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", pattern, NULL); return TCL_ERROR; } @@ -1840,13 +1779,13 @@ Tcl_ForgetImport( */ if (TclMatchIsTrivial(simplePattern)) { - hPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern); - if (hPtr != NULL) { - Command *cmdPtr = Tcl_GetHashValue(hPtr); + Command *cmdPtr; - if (cmdPtr && (cmdPtr->deleteProc == DeleteImportedCmd)) { - Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); - } + hPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern); + if ((hPtr != NULL) + && (cmdPtr = Tcl_GetHashValue(hPtr)) + && (cmdPtr->deleteProc == DeleteImportedCmd)) { + Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); } return TCL_OK; } @@ -1897,7 +1836,7 @@ Tcl_ForgetImport( } origin = firstToken; } - if (Tcl_StringMatch(Tcl_GetCommandName(NULL, origin), simplePattern)){ + if (Tcl_StringMatch(Tcl_GetCommandName(NULL, origin), simplePattern)) { Tcl_DeleteCommandFromToken(interp, token); } } @@ -1966,21 +1905,6 @@ TclGetOriginalCommand( */ static int -InvokeImportedNRCmd( - ClientData clientData, /* Points to the imported command's - * ImportedCmdData structure. */ - Tcl_Interp *interp, /* Current interpreter. */ - int objc, /* Number of arguments. */ - Tcl_Obj *const objv[]) /* The argument objects. */ -{ - ImportedCmdData *dataPtr = clientData; - Command *realCmdPtr = dataPtr->realCmdPtr; - - TclSkipTailcall(interp); - return TclNREvalObjv(interp, objc, objv, TCL_EVAL_NOERR, realCmdPtr); -} - -static int InvokeImportedCmd( ClientData clientData, /* Points to the imported command's * ImportedCmdData structure. */ @@ -1988,7 +1912,10 @@ InvokeImportedCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* The argument objects. */ { - return Tcl_NRCallObjProc(interp, InvokeImportedNRCmd, clientData, + register ImportedCmdData *dataPtr = clientData; + register Command *realCmdPtr = dataPtr->realCmdPtr; + + return (*realCmdPtr->objProc)(realCmdPtr->objClientData, interp, objc, objv); } @@ -2037,8 +1964,8 @@ DeleteImportedCmd( } else { prevPtr->nextPtr = refPtr->nextPtr; } - ckfree(refPtr); - ckfree(dataPtr); + ckfree((char *) refPtr); + ckfree((char *) dataPtr); return; } prevPtr = refPtr; @@ -2271,7 +2198,7 @@ TclGetNamespaceForQualName( * qualName since it may be a string constant. */ - TclDStringClear(&buffer); + Tcl_DStringSetLength(&buffer, 0); Tcl_DStringAppend(&buffer, start, len); nsName = Tcl_DStringValue(&buffer); } @@ -2284,15 +2211,7 @@ TclGetNamespaceForQualName( */ if (nsPtr != NULL) { -#ifndef BREAK_NAMESPACE_COMPAT entryPtr = Tcl_FindHashEntry(&nsPtr->childTable, nsName); -#else - if (nsPtr->childTablePtr == NULL) { - entryPtr = NULL; - } else { - entryPtr = Tcl_FindHashEntry(nsPtr->childTablePtr, nsName); - } -#endif if (entryPtr != NULL) { nsPtr = Tcl_GetHashValue(entryPtr); } else if (flags & TCL_CREATE_NS_IF_UNKNOWN) { @@ -2301,8 +2220,8 @@ TclGetNamespaceForQualName( (void) TclPushStackFrame(interp, &framePtr, (Tcl_Namespace *) nsPtr, /*isProcCallFrame*/ 0); - nsPtr = (Namespace *) - Tcl_CreateNamespace(interp, nsName, NULL, NULL); + nsPtr = (Namespace *) Tcl_CreateNamespace(interp, nsName, + NULL, NULL); TclPopStackFrame(interp); if (nsPtr == NULL) { @@ -2319,15 +2238,7 @@ TclGetNamespaceForQualName( */ if (altNsPtr != NULL) { -#ifndef BREAK_NAMESPACE_COMPAT entryPtr = Tcl_FindHashEntry(&altNsPtr->childTable, nsName); -#else - if (altNsPtr->childTablePtr != NULL) { - entryPtr = Tcl_FindHashEntry(altNsPtr->childTablePtr, nsName); - } else { - entryPtr = NULL; - } -#endif if (entryPtr != NULL) { altNsPtr = Tcl_GetHashValue(entryPtr); } else { @@ -2430,11 +2341,9 @@ Tcl_FindNamespace( if (nsPtr != NULL) { return (Tcl_Namespace *) nsPtr; - } - - if (flags & TCL_LEAVE_ERR_MSG) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "unknown namespace \"%s\"", name)); + } else if (flags & TCL_LEAVE_ERR_MSG) { + Tcl_ResetResult(interp); + Tcl_AppendResult(interp, "unknown namespace \"", name, "\"", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", name, NULL); } return NULL; @@ -2509,7 +2418,7 @@ Tcl_FindCommand( Tcl_Command cmd; if (cxtNsPtr->cmdResProc) { - result = cxtNsPtr->cmdResProc(interp, name, + result = (*cxtNsPtr->cmdResProc)(interp, name, (Tcl_Namespace *) cxtNsPtr, flags, &cmd); } else { result = TCL_CONTINUE; @@ -2517,7 +2426,7 @@ Tcl_FindCommand( while (result == TCL_CONTINUE && resPtr) { if (resPtr->cmdResProc) { - result = resPtr->cmdResProc(interp, name, + result = (*resPtr->cmdResProc)(interp, name, (Tcl_Namespace *) cxtNsPtr, flags, &cmd); } resPtr = resPtr->nextPtr; @@ -2620,8 +2529,8 @@ Tcl_FindCommand( } if (flags & TCL_LEAVE_ERR_MSG) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "unknown command \"%s\"", name)); + Tcl_ResetResult(interp); + Tcl_AppendResult(interp, "unknown command \"", name, "\"", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COMMAND", name, NULL); } return NULL; @@ -2672,8 +2581,8 @@ TclResetShadowedCmdRefs( int found, i; int trailFront = -1; int trailSize = 5; /* Formerly NUM_TRAIL_ELEMS. */ - Namespace **trailPtr = TclStackAlloc(interp, - trailSize * sizeof(Namespace *)); + Namespace **trailPtr = (Namespace **) + TclStackAlloc(interp, trailSize * sizeof(Namespace *)); /* * Start at the namespace containing the new command, and work up through @@ -2709,17 +2618,8 @@ TclResetShadowedCmdRefs( for (i = trailFront; i >= 0; i--) { trailNsPtr = trailPtr[i]; -#ifndef BREAK_NAMESPACE_COMPAT hPtr = Tcl_FindHashEntry(&shadowNsPtr->childTable, trailNsPtr->name); -#else - if (shadowNsPtr->childTablePtr != NULL) { - hPtr = Tcl_FindHashEntry(shadowNsPtr->childTablePtr, - trailNsPtr->name); - } else { - hPtr = NULL; - } -#endif if (hPtr != NULL) { shadowNsPtr = Tcl_GetHashValue(hPtr); } else { @@ -2747,7 +2647,7 @@ TclResetShadowedCmdRefs( * for a fresh compilation of every bytecode. */ - if (((Command *)Tcl_GetHashValue(hPtr))->compileProc != NULL){ + if (((Command *)Tcl_GetHashValue(hPtr))->compileProc != NULL) { nsPtr->resolverEpoch++; } } @@ -2761,9 +2661,8 @@ TclResetShadowedCmdRefs( trailFront++; if (trailFront == trailSize) { int newSize = 2 * trailSize; - - trailPtr = TclStackRealloc(interp, trailPtr, - newSize * sizeof(Namespace *)); + trailPtr = (Namespace **) TclStackRealloc(interp, + trailPtr, newSize * sizeof(Namespace *)); trailSize = newSize; } trailPtr[trailFront] = nsPtr; @@ -2811,7 +2710,7 @@ TclGetNamespaceFromObj( * Get the current namespace name. */ - NamespaceCurrentCmd(NULL, interp, 1, NULL); + NamespaceCurrentCmd(NULL, interp, 2, NULL); Tcl_SetObjResult(interp, Tcl_ObjPrintf( "namespace \"%s\" not found in \"%s\"", name, Tcl_GetStringResult(interp))); @@ -2834,22 +2733,22 @@ GetNamespaceFromObj( if (objPtr->typePtr == &nsNameType) { /* - * Check that the ResolvedNsName is still valid; avoid letting the ref + * Check that the ResolvedNsName is still valid; avoid letting the ref * cross interps. */ - resNamePtr = objPtr->internalRep.twoPtrValue.ptr1; + resNamePtr = (ResolvedNsName *) objPtr->internalRep.twoPtrValue.ptr1; nsPtr = resNamePtr->nsPtr; refNsPtr = resNamePtr->refNsPtr; if (!(nsPtr->flags & NS_DYING) && (interp == nsPtr->interp) && (!refNsPtr || ((interp == refNsPtr->interp) && - (refNsPtr== (Namespace *) Tcl_GetCurrentNamespace(interp))))){ + (refNsPtr== (Namespace *) Tcl_GetCurrentNamespace(interp))))) { *nsPtrPtr = (Tcl_Namespace *) nsPtr; return TCL_OK; } } if (SetNsNameFromAny(interp, objPtr) == TCL_OK) { - resNamePtr = objPtr->internalRep.twoPtrValue.ptr1; + resNamePtr = (ResolvedNsName *) objPtr->internalRep.twoPtrValue.ptr1; *nsPtrPtr = (Tcl_Namespace *) resNamePtr->nsPtr; return TCL_OK; } @@ -2859,25 +2758,139 @@ GetNamespaceFromObj( /* *---------------------------------------------------------------------- * - * TclInitNamespaceCmd -- + * Tcl_NamespaceObjCmd -- * - * This function is called to create the "namespace" Tcl command. See the - * user documentation for details on what it does. + * Invoked to implement the "namespace" command that creates, deletes, or + * manipulates Tcl namespaces. Handles the following syntax: + * + * namespace children ?name? ?pattern? + * namespace code arg + * namespace current + * namespace delete ?name name...? + * namespace ensemble subcommand ?arg...? + * namespace eval name arg ?arg...? + * namespace exists name + * namespace export ?-clear? ?pattern pattern...? + * namespace forget ?pattern pattern...? + * namespace import ?-force? ?pattern pattern...? + * namespace inscope name arg ?arg...? + * namespace origin name + * namespace parent ?name? + * namespace qualifiers string + * namespace tail string + * namespace which ?-command? ?-variable? name * * Results: - * Handle for the namespace command, or NULL on failure. + * Returns TCL_OK if the command is successful. Returns TCL_ERROR if + * anything goes wrong. * * Side effects: - * none + * Based on the subcommand name (e.g., "import"), this function + * dispatches to a corresponding function NamespaceXXXCmd defined + * statically in this file. This function's side effects depend on + * whatever that subcommand function does. If there is an error, this + * function returns an error message in the interpreter's result object. + * Otherwise it may return a result in the interpreter's result object. * *---------------------------------------------------------------------- */ -Tcl_Command -TclInitNamespaceCmd( - Tcl_Interp *interp) /* Current interpreter. */ +int +Tcl_NamespaceObjCmd( + ClientData clientData, /* Arbitrary value passed to cmd. */ + Tcl_Interp *interp, /* Current interpreter. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[]) /* Argument objects. */ { - return TclMakeEnsemble(interp, "namespace", defaultNamespaceMap); + static const char *subCmds[] = { + "children", "code", "current", "delete", "ensemble", + "eval", "exists", "export", "forget", "import", + "inscope", "origin", "parent", "path", "qualifiers", + "tail", "unknown", "upvar", "which", NULL + }; + enum NSSubCmdIdx { + NSChildrenIdx, NSCodeIdx, NSCurrentIdx, NSDeleteIdx, NSEnsembleIdx, + NSEvalIdx, NSExistsIdx, NSExportIdx, NSForgetIdx, NSImportIdx, + NSInscopeIdx, NSOriginIdx, NSParentIdx, NSPathIdx, NSQualifiersIdx, + NSTailIdx, NSUnknownIdx, NSUpvarIdx, NSWhichIdx + }; + int index, result; + + if (objc < 2) { + Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?arg ...?"); + return TCL_ERROR; + } + + /* + * Return an index reflecting the particular subcommand. + */ + + result = Tcl_GetIndexFromObj((Tcl_Interp *) interp, objv[1], subCmds, + "option", /*flags*/ 0, (int *) &index); + if (result != TCL_OK) { + return result; + } + + switch (index) { + case NSChildrenIdx: + result = NamespaceChildrenCmd(clientData, interp, objc, objv); + break; + case NSCodeIdx: + result = NamespaceCodeCmd(clientData, interp, objc, objv); + break; + case NSCurrentIdx: + result = NamespaceCurrentCmd(clientData, interp, objc, objv); + break; + case NSDeleteIdx: + result = NamespaceDeleteCmd(clientData, interp, objc, objv); + break; + case NSEnsembleIdx: + result = NamespaceEnsembleCmd(clientData, interp, objc, objv); + break; + case NSEvalIdx: + result = NamespaceEvalCmd(clientData, interp, objc, objv); + break; + case NSExistsIdx: + result = NamespaceExistsCmd(clientData, interp, objc, objv); + break; + case NSExportIdx: + result = NamespaceExportCmd(clientData, interp, objc, objv); + break; + case NSForgetIdx: + result = NamespaceForgetCmd(clientData, interp, objc, objv); + break; + case NSImportIdx: + result = NamespaceImportCmd(clientData, interp, objc, objv); + break; + case NSInscopeIdx: + result = NamespaceInscopeCmd(clientData, interp, objc, objv); + break; + case NSOriginIdx: + result = NamespaceOriginCmd(clientData, interp, objc, objv); + break; + case NSParentIdx: + result = NamespaceParentCmd(clientData, interp, objc, objv); + break; + case NSPathIdx: + result = NamespacePathCmd(clientData, interp, objc, objv); + break; + case NSQualifiersIdx: + result = NamespaceQualifiersCmd(clientData, interp, objc, objv); + break; + case NSTailIdx: + result = NamespaceTailCmd(clientData, interp, objc, objv); + break; + case NSUpvarIdx: + result = NamespaceUpvarCmd(clientData, interp, objc, objv); + break; + case NSUnknownIdx: + result = NamespaceUnknownCmd(clientData, interp, objc, objv); + break; + case NSWhichIdx: + result = NamespaceWhichCmd(clientData, interp, objc, objv); + break; + } + return result; } /* @@ -2911,7 +2924,7 @@ NamespaceChildrenCmd( Tcl_Namespace *namespacePtr; Namespace *nsPtr, *childNsPtr; Namespace *globalNsPtr = (Namespace *) TclGetGlobalNamespace(interp); - const char *pattern = NULL; + char *pattern = NULL; Tcl_DString buffer; register Tcl_HashEntry *entryPtr; Tcl_HashSearch search; @@ -2921,15 +2934,15 @@ NamespaceChildrenCmd( * Get a pointer to the specified namespace, or the current namespace. */ - if (objc == 1) { + if (objc == 2) { nsPtr = (Namespace *) TclGetCurrentNamespace(interp); - } else if ((objc == 2) || (objc == 3)) { - if (TclGetNamespaceFromObj(interp, objv[1], &namespacePtr) != TCL_OK){ + } else if ((objc == 3) || (objc == 4)) { + if (TclGetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) { return TCL_ERROR; } nsPtr = (Namespace *) namespacePtr; } else { - Tcl_WrongNumArgs(interp, 1, objv, "?name? ?pattern?"); + Tcl_WrongNumArgs(interp, 2, objv, "?name? ?pattern?"); return TCL_ERROR; } @@ -2938,15 +2951,15 @@ NamespaceChildrenCmd( */ Tcl_DStringInit(&buffer); - if (objc == 3) { - const char *name = TclGetString(objv[2]); + if (objc == 4) { + char *name = TclGetString(objv[3]); if ((*name == ':') && (*(name+1) == ':')) { pattern = name; } else { Tcl_DStringAppend(&buffer, nsPtr->fullName, -1); if (nsPtr != globalNsPtr) { - TclDStringAppendLiteral(&buffer, "::"); + Tcl_DStringAppend(&buffer, "::", 2); } Tcl_DStringAppend(&buffer, name, -1); pattern = Tcl_DStringValue(&buffer); @@ -2965,27 +2978,13 @@ NamespaceChildrenCmd( if (strncmp(pattern, nsPtr->fullName, length) != 0) { goto searchDone; } - if ( -#ifndef BREAK_NAMESPACE_COMPAT - Tcl_FindHashEntry(&nsPtr->childTable, pattern+length) != NULL -#else - nsPtr->childTablePtr != NULL && - Tcl_FindHashEntry(nsPtr->childTablePtr, pattern+length) != NULL -#endif - ) { + if (Tcl_FindHashEntry(&nsPtr->childTable, pattern+length) != NULL) { Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj(pattern, -1)); } goto searchDone; } -#ifndef BREAK_NAMESPACE_COMPAT entryPtr = Tcl_FirstHashEntry(&nsPtr->childTable, &search); -#else - if (nsPtr->childTablePtr == NULL) { - goto searchDone; - } - entryPtr = Tcl_FirstHashEntry(nsPtr->childTablePtr, &search); -#endif while (entryPtr != NULL) { childNsPtr = Tcl_GetHashValue(entryPtr); if ((pattern == NULL) @@ -3039,11 +3038,11 @@ NamespaceCodeCmd( { Namespace *currNsPtr; Tcl_Obj *listPtr, *objPtr; - register const char *arg; + register char *arg; int length; - if (objc != 2) { - Tcl_WrongNumArgs(interp, 1, objv, "arg"); + if (objc != 3) { + Tcl_WrongNumArgs(interp, 2, objv, "arg"); return TCL_ERROR; } @@ -3055,10 +3054,10 @@ NamespaceCodeCmd( " "namespace" command. [Bug 3202171]. */ - arg = TclGetStringFromObj(objv[1], &length); + arg = TclGetStringFromObj(objv[2], &length); if (*arg==':' && length > 20 && strncmp(arg, "::namespace inscope ", 20) == 0) { - Tcl_SetObjResult(interp, objv[1]); + Tcl_SetObjResult(interp, objv[2]); return TCL_OK; } @@ -3084,7 +3083,7 @@ NamespaceCodeCmd( } Tcl_ListObjAppendElement(interp, listPtr, objPtr); - Tcl_ListObjAppendElement(interp, listPtr, objv[1]); + Tcl_ListObjAppendElement(interp, listPtr, objv[2]); Tcl_SetObjResult(interp, listPtr); return TCL_OK; @@ -3120,8 +3119,8 @@ NamespaceCurrentCmd( { register Namespace *currNsPtr; - if (objc != 1) { - Tcl_WrongNumArgs(interp, 1, objv, NULL); + if (objc != 2) { + Tcl_WrongNumArgs(interp, 2, objv, NULL); return TCL_ERROR; } @@ -3182,11 +3181,11 @@ NamespaceDeleteCmd( Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_Namespace *namespacePtr; - const char *name; + char *name; register int i; - if (objc < 1) { - Tcl_WrongNumArgs(interp, 1, objv, "?name name...?"); + if (objc < 2) { + Tcl_WrongNumArgs(interp, 2, objv, "?name name...?"); return TCL_ERROR; } @@ -3196,14 +3195,14 @@ NamespaceDeleteCmd( * command line are valid, and report any errors. */ - for (i = 1; i < objc; i++) { + for (i = 2; i < objc; i++) { name = TclGetString(objv[i]); namespacePtr = Tcl_FindNamespace(interp, name, NULL, /*flags*/ 0); if ((namespacePtr == NULL) - || (((Namespace *) namespacePtr)->flags & NS_KILLED)) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "unknown namespace \"%s\" in namespace delete command", - TclGetString(objv[i]))); + || (((Namespace *)namespacePtr)->flags & NS_KILLED)) { + Tcl_AppendResult(interp, "unknown namespace \"", + TclGetString(objv[i]), + "\" in namespace delete command", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", TclGetString(objv[i]), NULL); return TCL_ERROR; @@ -3214,7 +3213,7 @@ NamespaceDeleteCmd( * Okay, now delete each namespace. */ - for (i = 1; i < objc; i++) { + for (i = 2; i < objc; i++) { name = TclGetString(objv[i]); namespacePtr = Tcl_FindNamespace(interp, name, NULL, /* flags */ 0); if (namespacePtr) { @@ -3253,32 +3252,18 @@ NamespaceDeleteCmd( static int NamespaceEvalCmd( - ClientData clientData, /* Arbitrary value passed to cmd. */ - Tcl_Interp *interp, /* Current interpreter. */ - int objc, /* Number of arguments. */ - Tcl_Obj *const objv[]) /* Argument objects. */ -{ - return Tcl_NRCallObjProc(interp, NRNamespaceEvalCmd, clientData, objc, - objv); -} - -static int -NRNamespaceEvalCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - Interp *iPtr = (Interp *) interp; - CmdFrame *invoker; - int word; Tcl_Namespace *namespacePtr; CallFrame *framePtr, **framePtrPtr; Tcl_Obj *objPtr; int result; - if (objc < 3) { - Tcl_WrongNumArgs(interp, 1, objv, "name arg ?arg...?"); + if (objc < 4) { + Tcl_WrongNumArgs(interp, 2, objv, "name arg ?arg...?"); return TCL_ERROR; } @@ -3287,14 +3272,14 @@ NRNamespaceEvalCmd( * namespace object along the way. */ - result = GetNamespaceFromObj(interp, objv[1], &namespacePtr); + result = GetNamespaceFromObj(interp, objv[2], &namespacePtr); /* * If the namespace wasn't found, try to create it. */ if (result == TCL_ERROR) { - const char *name = TclGetString(objv[1]); + char *name = TclGetString(objv[2]); namespacePtr = Tcl_CreateNamespace(interp, name, NULL, NULL); if (namespacePtr == NULL) { @@ -3315,24 +3300,20 @@ NRNamespaceEvalCmd( return TCL_ERROR; } - if (iPtr->ensembleRewrite.sourceObjs == NULL) { - framePtr->objc = objc; - framePtr->objv = objv; - } else { - framePtr->objc = objc + iPtr->ensembleRewrite.numRemovedObjs - - iPtr->ensembleRewrite.numInsertedObjs; - framePtr->objv = iPtr->ensembleRewrite.sourceObjs; - } + framePtr->objc = objc; + framePtr->objv = objv; - if (objc == 3) { + if (objc == 4) { /* * TIP #280: Make actual argument location available to eval'd script. */ - objPtr = objv[2]; - invoker = iPtr->cmdFramePtr; - word = 3; - TclArgumentGet(interp, objPtr, &invoker, &word); + Interp *iPtr = (Interp *) interp; + CmdFrame* invoker = iPtr->cmdFramePtr; + int word = 3; + + TclArgumentGet (interp, objv[3], &invoker, &word); + result = TclEvalObjEx(interp, objv[3], 0, invoker, word); } else { /* * More than one argument: concatenate them together with spaces @@ -3340,39 +3321,24 @@ NRNamespaceEvalCmd( * object when it decrements its refcount after eval'ing it. */ - objPtr = Tcl_ConcatObj(objc-2, objv+2); - invoker = NULL; - word = 0; - } + objPtr = Tcl_ConcatObj(objc-3, objv+3); - /* - * TIP #280: Make invoking context available to eval'd script. - */ - - TclNRAddCallback(interp, NsEval_Callback, namespacePtr, "eval", - NULL, NULL); - return TclNREvalObjEx(interp, objPtr, 0, invoker, word); -} + /* + * TIP #280: Make invoking context available to eval'd script. + */ -static int -NsEval_Callback( - ClientData data[], - Tcl_Interp *interp, - int result) -{ - Tcl_Namespace *namespacePtr = data[0]; + result = TclEvalObjEx(interp, objPtr, TCL_EVAL_DIRECT, NULL, 0); + } if (result == TCL_ERROR) { int length = strlen(namespacePtr->fullName); int limit = 200; int overflow = (length > limit); - char *cmd = data[1]; Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( - "\n (in namespace %s \"%.*s%s\" script line %d)", - cmd, + "\n (in namespace eval \"%.*s%s\" script line %d)", (overflow ? limit : length), namespacePtr->fullName, - (overflow ? "..." : ""), Tcl_GetErrorLine(interp))); + (overflow ? "..." : ""), interp->errorLine)); } /* @@ -3413,13 +3379,13 @@ NamespaceExistsCmd( { Tcl_Namespace *namespacePtr; - if (objc != 2) { - Tcl_WrongNumArgs(interp, 1, objv, "name"); + if (objc != 3) { + Tcl_WrongNumArgs(interp, 2, objv, "name"); return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_NewBooleanObj( - GetNamespaceFromObj(interp, objv[1], &namespacePtr) == TCL_OK)); + GetNamespaceFromObj(interp, objv[2], &namespacePtr) == TCL_OK)); return TCL_OK; } @@ -3468,8 +3434,8 @@ NamespaceExportCmd( { int firstArg, i; - if (objc < 1) { - Tcl_WrongNumArgs(interp, 1, objv, "?-clear? ?pattern pattern...?"); + if (objc < 2) { + Tcl_WrongNumArgs(interp, 2, objv, "?-clear? ?pattern pattern...?"); return TCL_ERROR; } @@ -3478,7 +3444,7 @@ NamespaceExportCmd( * the namespace's current export pattern list. */ - if (objc == 1) { + if (objc == 2) { Tcl_Obj *listPtr = Tcl_NewObj(); (void) Tcl_AppendExportList(interp, NULL, listPtr); @@ -3490,7 +3456,7 @@ NamespaceExportCmd( * Process the optional "-clear" argument. */ - firstArg = 1; + firstArg = 2; if (strcmp("-clear", Tcl_GetString(objv[firstArg])) == 0) { Tcl_Export(interp, NULL, "::", 1); Tcl_ResetResult(interp); @@ -3547,15 +3513,15 @@ NamespaceForgetCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - const char *pattern; + char *pattern; register int i, result; - if (objc < 1) { - Tcl_WrongNumArgs(interp, 1, objv, "?pattern pattern...?"); + if (objc < 2) { + Tcl_WrongNumArgs(interp, 2, objv, "?pattern pattern...?"); return TCL_ERROR; } - for (i = 1; i < objc; i++) { + for (i = 2; i < objc; i++) { pattern = TclGetString(objv[i]); result = Tcl_ForgetImport(interp, NULL, pattern); if (result != TCL_OK) { @@ -3613,12 +3579,12 @@ NamespaceImportCmd( Tcl_Obj *const objv[]) /* Argument objects. */ { int allowOverwrite = 0; - const char *string, *pattern; + char *string, *pattern; register int i, result; int firstArg; - if (objc < 1) { - Tcl_WrongNumArgs(interp, 1, objv, "?-force? ?pattern pattern...?"); + if (objc < 2) { + Tcl_WrongNumArgs(interp, 2, objv, "?-force? ?pattern pattern...?"); return TCL_ERROR; } @@ -3626,7 +3592,7 @@ NamespaceImportCmd( * Skip over the optional "-force" as the first argument. */ - firstArg = 1; + firstArg = 2; if (firstArg < objc) { string = TclGetString(objv[firstArg]); if ((*string == '-') && (strcmp(string, "-force") == 0)) { @@ -3635,7 +3601,7 @@ NamespaceImportCmd( } } else { /* - * When objc == 1, command is just [namespace import]. Introspection + * When objc == 2, command is just [namespace import]. Introspection * form to return list of imported commands. */ @@ -3711,17 +3677,6 @@ NamespaceImportCmd( static int NamespaceInscopeCmd( - ClientData clientData, /* Arbitrary value passed to cmd. */ - Tcl_Interp *interp, /* Current interpreter. */ - int objc, /* Number of arguments. */ - Tcl_Obj *const objv[]) /* Argument objects. */ -{ - return Tcl_NRCallObjProc(interp, NRNamespaceInscopeCmd, clientData, objc, - objv); -} - -static int -NRNamespaceInscopeCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ @@ -3729,12 +3684,10 @@ NRNamespaceInscopeCmd( { Tcl_Namespace *namespacePtr; CallFrame *framePtr, **framePtrPtr; - register Interp *iPtr = (Interp *) interp; int i, result; - Tcl_Obj *cmdObjPtr; - if (objc < 3) { - Tcl_WrongNumArgs(interp, 1, objv, "name arg ?arg...?"); + if (objc < 4) { + Tcl_WrongNumArgs(interp, 2, objv, "name arg ?arg...?"); return TCL_ERROR; } @@ -3742,7 +3695,7 @@ NRNamespaceInscopeCmd( * Resolve the namespace reference. */ - if (TclGetNamespaceFromObj(interp, objv[1], &namespacePtr) != TCL_OK) { + if (TclGetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) { return TCL_ERROR; } @@ -3758,14 +3711,8 @@ NRNamespaceInscopeCmd( return result; } - if (iPtr->ensembleRewrite.sourceObjs == NULL) { - framePtr->objc = objc; - framePtr->objv = objv; - } else { - framePtr->objc = objc + iPtr->ensembleRewrite.numRemovedObjs - - iPtr->ensembleRewrite.numInsertedObjs; - framePtr->objv = iPtr->ensembleRewrite.sourceObjs; - } + framePtr->objc = objc; + framePtr->objv = objv; /* * Execute the command. If there is just one argument, just treat it as a @@ -3774,29 +3721,44 @@ NRNamespaceInscopeCmd( * of extra arguments to form the command to evaluate. */ - if (objc == 3) { - cmdObjPtr = objv[2]; + if (objc == 4) { + result = Tcl_EvalObjEx(interp, objv[3], 0); } else { Tcl_Obj *concatObjv[2]; - register Tcl_Obj *listPtr; + register Tcl_Obj *listPtr, *cmdObjPtr; listPtr = Tcl_NewListObj(0, NULL); - for (i = 3; i < objc; i++) { - if (Tcl_ListObjAppendElement(interp, listPtr, objv[i]) != TCL_OK){ + for (i = 4; i < objc; i++) { + if (Tcl_ListObjAppendElement(interp, listPtr, objv[i]) != TCL_OK) { Tcl_DecrRefCount(listPtr); /* Free unneeded obj. */ return TCL_ERROR; } } - concatObjv[0] = objv[2]; + concatObjv[0] = objv[3]; concatObjv[1] = listPtr; cmdObjPtr = Tcl_ConcatObj(2, concatObjv); + result = Tcl_EvalObjEx(interp, cmdObjPtr, TCL_EVAL_DIRECT); Tcl_DecrRefCount(listPtr); /* We're done with the list object. */ } - TclNRAddCallback(interp, NsEval_Callback, namespacePtr, "inscope", - NULL, NULL); - return TclNREvalObjEx(interp, cmdObjPtr, 0, NULL, 0); + if (result == TCL_ERROR) { + int length = strlen(namespacePtr->fullName); + int limit = 200; + int overflow = (length > limit); + + Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( + "\n (in namespace inscope \"%.*s%s\" script line %d)", + (overflow ? limit : length), namespacePtr->fullName, + (overflow ? "..." : ""), interp->errorLine)); + } + + /* + * Restore the previous "current" namespace. + */ + + TclPopStackFrame(interp); + return result; } /* @@ -3838,17 +3800,17 @@ NamespaceOriginCmd( Tcl_Command command, origCommand; Tcl_Obj *resultPtr; - if (objc != 2) { - Tcl_WrongNumArgs(interp, 1, objv, "name"); + if (objc != 3) { + Tcl_WrongNumArgs(interp, 2, objv, "name"); return TCL_ERROR; } - command = Tcl_GetCommandFromObj(interp, objv[1]); + command = Tcl_GetCommandFromObj(interp, objv[2]); if (command == NULL) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "invalid command name \"%s\"", TclGetString(objv[1]))); + Tcl_AppendResult(interp, "invalid command name \"", + TclGetString(objv[2]), "\"", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COMMAND", - TclGetString(objv[1]), NULL); + TclGetString(objv[2]), NULL); return TCL_ERROR; } origCommand = TclGetOriginalCommand(command); @@ -3898,14 +3860,14 @@ NamespaceParentCmd( { Tcl_Namespace *nsPtr; - if (objc == 1) { + if (objc == 2) { nsPtr = TclGetCurrentNamespace(interp); - } else if (objc == 2) { - if (TclGetNamespaceFromObj(interp, objv[1], &nsPtr) != TCL_OK) { + } else if (objc == 3) { + if (TclGetNamespaceFromObj(interp, objv[2], &nsPtr) != TCL_OK) { return TCL_ERROR; } } else { - Tcl_WrongNumArgs(interp, 1, objv, "?name?"); + Tcl_WrongNumArgs(interp, 2, objv, "?name?"); return TCL_ERROR; } @@ -3959,8 +3921,8 @@ NamespacePathCmd( Tcl_Obj **nsObjv; Tcl_Namespace **namespaceList = NULL; - if (objc > 2) { - Tcl_WrongNumArgs(interp, 1, objv, "?pathList?"); + if (objc > 3) { + Tcl_WrongNumArgs(interp, 2, objv, "?pathList?"); return TCL_ERROR; } @@ -3968,16 +3930,17 @@ NamespacePathCmd( * If no path is given, return the current path. */ - if (objc == 1) { - Tcl_Obj *resultObj = Tcl_NewObj(); + if (objc == 2) { + /* + * Not a very fast way to compute this, but easy to get right. + */ for (i=0 ; i<nsPtr->commandPathLength ; i++) { if (nsPtr->commandPathArray[i].nsPtr != NULL) { - Tcl_ListObjAppendElement(NULL, resultObj, Tcl_NewStringObj( - nsPtr->commandPathArray[i].nsPtr->fullName, -1)); + Tcl_AppendElement(interp, + nsPtr->commandPathArray[i].nsPtr->fullName); } } - Tcl_SetObjResult(interp, resultObj); return TCL_OK; } @@ -3985,12 +3948,12 @@ NamespacePathCmd( * There is a path given, so parse it into an array of namespace pointers. */ - if (TclListObjGetElements(interp, objv[1], &nsObjc, &nsObjv) != TCL_OK) { + if (TclListObjGetElements(interp, objv[2], &nsObjc, &nsObjv) != TCL_OK) { goto badNamespace; } if (nsObjc != 0) { - namespaceList = TclStackAlloc(interp, - sizeof(Tcl_Namespace *) * nsObjc); + namespaceList = (Tcl_Namespace **) + TclStackAlloc(interp, sizeof(Tcl_Namespace *) * nsObjc); for (i=0 ; i<nsObjc ; i++) { if (TclGetNamespaceFromObj(interp, nsObjv[i], @@ -4041,7 +4004,7 @@ TclSetNsPath( Tcl_Namespace *pathAry[]) /* Array of namespaces that are the path. */ { if (pathLength != 0) { - NamespacePathEntry *tmpPathArray = + NamespacePathEntry *tmpPathArray = (NamespacePathEntry *) ckalloc(sizeof(NamespacePathEntry) * pathLength); int i; @@ -4097,7 +4060,6 @@ UnlinkNsPath( int i; for (i=0 ; i<nsPtr->commandPathLength ; i++) { NamespacePathEntry *nsPathPtr = &nsPtr->commandPathArray[i]; - if (nsPathPtr->prevPtr != NULL) { nsPathPtr->prevPtr->nextPtr = nsPathPtr->nextPtr; } @@ -4110,7 +4072,7 @@ UnlinkNsPath( } } } - ckfree(nsPtr->commandPathArray); + ckfree((char *) nsPtr->commandPathArray); } /* @@ -4138,7 +4100,6 @@ TclInvalidateNsPath( Namespace *nsPtr) { NamespacePathEntry *nsPathPtr = nsPtr->commandPathSourceList; - while (nsPathPtr != NULL) { if (nsPathPtr->nsPtr != NULL) { nsPathPtr->creatorNsPtr->cmdRefEpoch++; @@ -4179,11 +4140,11 @@ NamespaceQualifiersCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - register const char *name, *p; + register char *name, *p; int length; - if (objc != 2) { - Tcl_WrongNumArgs(interp, 1, objv, "string"); + if (objc != 3) { + Tcl_WrongNumArgs(interp, 2, objv, "string"); return TCL_ERROR; } @@ -4192,7 +4153,7 @@ NamespaceQualifiersCmd( * the last "::" qualifier. */ - name = TclGetString(objv[1]); + name = TclGetString(objv[2]); for (p = name; *p != '\0'; p++) { /* empty body */ } @@ -4251,14 +4212,14 @@ NamespaceUnknownCmd( Tcl_Obj *resultPtr; int rc; - if (objc > 2) { - Tcl_WrongNumArgs(interp, 1, objv, "?script?"); + if (objc > 3) { + Tcl_WrongNumArgs(interp, 2, objv, "?script?"); return TCL_ERROR; } currNsPtr = TclGetCurrentNamespace(interp); - if (objc == 1) { + if (objc == 2) { /* * Introspection - return the current namespace handler. */ @@ -4269,9 +4230,9 @@ NamespaceUnknownCmd( } Tcl_SetObjResult(interp, resultPtr); } else { - rc = Tcl_SetNamespaceUnknownHandler(interp, currNsPtr, objv[1]); + rc = Tcl_SetNamespaceUnknownHandler(interp, currNsPtr, objv[2]); if (rc == TCL_OK) { - Tcl_SetObjResult(interp, objv[1]); + Tcl_SetObjResult(interp, objv[2]); } return rc; } @@ -4302,10 +4263,10 @@ Tcl_GetNamespaceUnknownHandler( * exists. */ Tcl_Namespace *nsPtr) /* The namespace. */ { - Namespace *currNsPtr = (Namespace *) nsPtr; + Namespace *currNsPtr = (Namespace *)nsPtr; if (currNsPtr->unknownHandlerPtr == NULL && - currNsPtr == ((Interp *) interp)->globalNsPtr) { + currNsPtr == ((Interp *)interp)->globalNsPtr) { /* * Default handler for global namespace is "::unknown". For all other * namespaces, it is NULL (which falls back on the global unknown @@ -4346,7 +4307,7 @@ Tcl_SetNamespaceUnknownHandler( Tcl_Obj *handlerPtr) /* The new handler, or NULL to reset. */ { int lstlen = 0; - Namespace *currNsPtr = (Namespace *) nsPtr; + Namespace *currNsPtr = (Namespace *)nsPtr; /* * Ensure that we check for errors *first* before we change anything. @@ -4434,10 +4395,10 @@ NamespaceTailCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - register const char *name, *p; + register char *name, *p; - if (objc != 2) { - Tcl_WrongNumArgs(interp, 1, objv, "string"); + if (objc != 3) { + Tcl_WrongNumArgs(interp, 2, objv, "string"); return TCL_ERROR; } @@ -4446,7 +4407,7 @@ NamespaceTailCmd( * qualifier. */ - name = TclGetString(objv[1]); + name = TclGetString(objv[2]); for (p = name; *p != '\0'; p++) { /* empty body */ } @@ -4495,23 +4456,24 @@ NamespaceUpvarCmd( Interp *iPtr = (Interp *) interp; Tcl_Namespace *nsPtr, *savedNsPtr; Var *otherPtr, *arrayPtr; - const char *myName; + char *myName; - if (objc < 2 || (objc & 1)) { - Tcl_WrongNumArgs(interp, 1, objv, "ns ?otherVar myVar ...?"); + if (objc < 5 || !(objc & 1)) { + Tcl_WrongNumArgs(interp, 2, objv, + "ns otherVar myVar ?otherVar myVar ...?"); return TCL_ERROR; } - if (TclGetNamespaceFromObj(interp, objv[1], &nsPtr) != TCL_OK) { + if (TclGetNamespaceFromObj(interp, objv[2], &nsPtr) != TCL_OK) { return TCL_ERROR; } - objc -= 2; - objv += 2; + objc -= 3; + objv += 3; for (; objc>0 ; objc-=2, objv+=2) { /* - * Locate the other variable. + * Locate the other variable */ savedNsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr; @@ -4566,22 +4528,22 @@ NamespaceWhichCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - static const char *const opts[] = { + static const char *opts[] = { "-command", "-variable", NULL }; int lookupType = 0; Tcl_Obj *resultPtr; - if (objc < 2 || objc > 3) { + if (objc < 3 || objc > 4) { badArgs: - Tcl_WrongNumArgs(interp, 1, objv, "?-command? ?-variable? name"); + Tcl_WrongNumArgs(interp, 2, objv, "?-command? ?-variable? name"); return TCL_ERROR; - } else if (objc == 3) { + } else if (objc == 4) { /* * Look for a flag controlling the lookup. */ - if (Tcl_GetIndexFromObj(interp, objv[1], opts, "option", 0, + if (Tcl_GetIndexFromObj(interp, objv[2], opts, "option", 0, &lookupType) != TCL_OK) { /* * Preserve old style of error message! @@ -4640,7 +4602,9 @@ FreeNsNameInternalRep( register Tcl_Obj *objPtr) /* nsName object with internal representation * to free. */ { - ResolvedNsName *resNamePtr = objPtr->internalRep.twoPtrValue.ptr1; + register ResolvedNsName *resNamePtr = (ResolvedNsName *) + objPtr->internalRep.twoPtrValue.ptr1; + Namespace *nsPtr; /* * Decrement the reference count of the namespace. If there are no more @@ -4649,14 +4613,19 @@ FreeNsNameInternalRep( resNamePtr->refCount--; if (resNamePtr->refCount == 0) { + /* * Decrement the reference count for the cached namespace. If the * namespace is dead, and there are no more references to it, free * it. */ - TclNsDecrRefCount(resNamePtr->nsPtr); - ckfree(resNamePtr); + nsPtr = resNamePtr->nsPtr; + nsPtr->refCount--; + if ((nsPtr->refCount == 0) && (nsPtr->flags & NS_DEAD)) { + NamespaceFree(nsPtr); + } + ckfree((char *) resNamePtr); } objPtr->typePtr = NULL; } @@ -4685,7 +4654,8 @@ DupNsNameInternalRep( Tcl_Obj *srcPtr, /* Object with internal rep to copy. */ register Tcl_Obj *copyPtr) /* Object with internal rep to set. */ { - ResolvedNsName *resNamePtr = srcPtr->internalRep.twoPtrValue.ptr1; + register ResolvedNsName *resNamePtr = (ResolvedNsName *) + srcPtr->internalRep.twoPtrValue.ptr1; copyPtr->internalRep.twoPtrValue.ptr1 = resNamePtr; resNamePtr->refCount++; @@ -4748,12 +4718,13 @@ SetNsNameFromAny( if (objPtr->typePtr == &nsNameType) { TclFreeIntRep(objPtr); + objPtr->typePtr = NULL; } return TCL_ERROR; } nsPtr->refCount++; - resNamePtr = ckalloc(sizeof(ResolvedNsName)); + resNamePtr = (ResolvedNsName *) ckalloc(sizeof(ResolvedNsName)); resNamePtr->nsPtr = nsPtr; if ((name[0] == ':') && (name[1] == ':')) { resNamePtr->refNsPtr = NULL; @@ -4770,271 +4741,2177 @@ SetNsNameFromAny( /* *---------------------------------------------------------------------- * - * TclGetNamespaceCommandTable -- + * NamespaceEnsembleCmd -- * - * Returns the hash table of commands. + * Invoked to implement the "namespace ensemble" command that creates and + * manipulates ensembles built on top of namespaces. Handles the + * following syntax: + * + * namespace ensemble name ?dictionary? * * Results: - * Pointer to the hash table. + * Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong. * * Side effects: - * None. + * Creates the ensemble for the namespace if one did not previously + * exist. Alternatively, alters the way that the ensemble's subcommand => + * implementation prefix is configured. + * + *---------------------------------------------------------------------- + */ + +static int +NamespaceEnsembleCmd( + ClientData dummy, + Tcl_Interp *interp, + int objc, + Tcl_Obj *const objv[]) +{ + Namespace *nsPtr; + Tcl_Command token; + static const char *subcommands[] = { + "configure", "create", "exists", NULL + }; + enum EnsSubcmds { + ENS_CONFIG, ENS_CREATE, ENS_EXISTS + }; + static const char *createOptions[] = { + "-command", "-map", "-prefixes", "-subcommands", "-unknown", NULL + }; + enum EnsCreateOpts { + CRT_CMD, CRT_MAP, CRT_PREFIX, CRT_SUBCMDS, CRT_UNKNOWN + }; + static const char *configOptions[] = { + "-map", "-namespace", "-prefixes", "-subcommands", "-unknown", NULL + }; + enum EnsConfigOpts { + CONF_MAP, CONF_NAMESPACE, CONF_PREFIX, CONF_SUBCMDS, CONF_UNKNOWN + }; + int index; + + nsPtr = (Namespace *) TclGetCurrentNamespace(interp); + if (nsPtr == NULL || nsPtr->flags & NS_DYING) { + if (!Tcl_InterpDeleted(interp)) { + Tcl_AppendResult(interp, + "tried to manipulate ensemble of deleted namespace", NULL); + } + return TCL_ERROR; + } + + if (objc < 3) { + Tcl_WrongNumArgs(interp, 2, objv, "subcommand ?arg ...?"); + return TCL_ERROR; + } + if (Tcl_GetIndexFromObj(interp, objv[2], subcommands, "subcommand", 0, + &index) != TCL_OK) { + return TCL_ERROR; + } + + switch ((enum EnsSubcmds) index) { + case ENS_CREATE: { + char *name; + Tcl_DictSearch search; + Tcl_Obj *listObj; + int done, len, allocatedMapFlag = 0; + /* + * Defaults + */ + Tcl_Obj *subcmdObj = NULL; + Tcl_Obj *mapObj = NULL; + int permitPrefix = 1; + Tcl_Obj *unknownObj = NULL; + + objv += 3; + objc -= 3; + + /* + * Work out what name to use for the command to create. If supplied, + * it is either fully specified or relative to the current namespace. + * If not supplied, it is exactly the name of the current namespace. + */ + + name = nsPtr->fullName; + + /* + * Parse the option list, applying type checks as we go. Note that we + * are not incrementing any reference counts in the objects at this + * stage, so the presence of an option multiple times won't cause any + * memory leaks. + */ + + for (; objc>1 ; objc-=2,objv+=2 ) { + if (Tcl_GetIndexFromObj(interp, objv[0], createOptions, "option", + 0, &index) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + switch ((enum EnsCreateOpts) index) { + case CRT_CMD: + name = TclGetString(objv[1]); + continue; + case CRT_SUBCMDS: + if (TclListObjLength(interp, objv[1], &len) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + subcmdObj = (len > 0 ? objv[1] : NULL); + continue; + case CRT_MAP: { + Tcl_Obj *patchedDict = NULL, *subcmdObj; + + /* + * Verify that the map is sensible. + */ + + if (Tcl_DictObjFirst(interp, objv[1], &search, + &subcmdObj, &listObj, &done) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + if (done) { + mapObj = NULL; + continue; + } + do { + Tcl_Obj **listv; + char *cmd; + + if (TclListObjGetElements(interp, listObj, &len, + &listv) != TCL_OK) { + Tcl_DictObjDone(&search); + if (patchedDict) { + Tcl_DecrRefCount(patchedDict); + } + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + if (len < 1) { + Tcl_SetResult(interp, + "ensemble subcommand implementations " + "must be non-empty lists", TCL_STATIC); + Tcl_DictObjDone(&search); + if (patchedDict) { + Tcl_DecrRefCount(patchedDict); + } + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + cmd = TclGetString(listv[0]); + if (!(cmd[0] == ':' && cmd[1] == ':')) { + Tcl_Obj *newList = Tcl_NewListObj(len, listv); + Tcl_Obj *newCmd = Tcl_NewStringObj(nsPtr->fullName,-1); + + if (nsPtr->parentPtr) { + Tcl_AppendStringsToObj(newCmd, "::", NULL); + } + Tcl_AppendObjToObj(newCmd, listv[0]); + Tcl_ListObjReplace(NULL, newList, 0, 1, 1, &newCmd); + if (patchedDict == NULL) { + patchedDict = Tcl_DuplicateObj(objv[1]); + } + Tcl_DictObjPut(NULL, patchedDict, subcmdObj, newList); + } + Tcl_DictObjNext(&search, &subcmdObj, &listObj, &done); + } while (!done); + + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + mapObj = (patchedDict ? patchedDict : objv[1]); + if (patchedDict) { + allocatedMapFlag = 1; + } + continue; + } + case CRT_PREFIX: + if (Tcl_GetBooleanFromObj(interp, objv[1], + &permitPrefix) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + continue; + case CRT_UNKNOWN: + if (TclListObjLength(interp, objv[1], &len) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + unknownObj = (len > 0 ? objv[1] : NULL); + continue; + } + } + + /* + * Create the ensemble. Note that this might delete another ensemble + * linked to the same namespace, so we must be careful. However, we + * should be OK because we only link the namespace into the list once + * we've created it (and after any deletions have occurred.) + */ + + token = Tcl_CreateEnsemble(interp, name, NULL, + (permitPrefix ? TCL_ENSEMBLE_PREFIX : 0)); + Tcl_SetEnsembleSubcommandList(interp, token, subcmdObj); + Tcl_SetEnsembleMappingDict(interp, token, mapObj); + Tcl_SetEnsembleUnknownHandler(interp, token, unknownObj); + + /* + * Tricky! Must ensure that the result is not shared (command delete + * traces could have corrupted the pristine object that we started + * with). [Snit test rename-1.5] + */ + + Tcl_ResetResult(interp); + Tcl_GetCommandFullName(interp, token, Tcl_GetObjResult(interp)); + return TCL_OK; + } + + case ENS_EXISTS: + if (objc != 4) { + Tcl_WrongNumArgs(interp, 3, objv, "cmdname"); + return TCL_ERROR; + } + Tcl_SetObjResult(interp, Tcl_NewBooleanObj( + Tcl_FindEnsemble(interp, objv[3], 0) != NULL)); + return TCL_OK; + + case ENS_CONFIG: + if (objc < 4 || (objc != 5 && objc & 1)) { + Tcl_WrongNumArgs(interp, 3, objv, "cmdname ?opt? ?value? ..."); + return TCL_ERROR; + } + token = Tcl_FindEnsemble(interp, objv[3], TCL_LEAVE_ERR_MSG); + if (token == NULL) { + return TCL_ERROR; + } + + if (objc == 5) { + Tcl_Obj *resultObj = NULL; /* silence gcc 4 warning */ + + if (Tcl_GetIndexFromObj(interp, objv[4], configOptions, "option", + 0, &index) != TCL_OK) { + return TCL_ERROR; + } + switch ((enum EnsConfigOpts) index) { + case CONF_SUBCMDS: + Tcl_GetEnsembleSubcommandList(NULL, token, &resultObj); + if (resultObj != NULL) { + Tcl_SetObjResult(interp, resultObj); + } + break; + case CONF_MAP: + Tcl_GetEnsembleMappingDict(NULL, token, &resultObj); + if (resultObj != NULL) { + Tcl_SetObjResult(interp, resultObj); + } + break; + case CONF_NAMESPACE: { + Tcl_Namespace *namespacePtr = NULL; /* silence gcc 4 warning */ + + Tcl_GetEnsembleNamespace(NULL, token, &namespacePtr); + Tcl_SetResult(interp, ((Namespace *)namespacePtr)->fullName, + TCL_VOLATILE); + break; + } + case CONF_PREFIX: { + int flags = 0; /* silence gcc 4 warning */ + + Tcl_GetEnsembleFlags(NULL, token, &flags); + Tcl_SetObjResult(interp, + Tcl_NewBooleanObj(flags & TCL_ENSEMBLE_PREFIX)); + break; + } + case CONF_UNKNOWN: + Tcl_GetEnsembleUnknownHandler(NULL, token, &resultObj); + if (resultObj != NULL) { + Tcl_SetObjResult(interp, resultObj); + } + break; + } + return TCL_OK; + + } else if (objc == 4) { + /* + * Produce list of all information. + */ + + Tcl_Obj *resultObj, *tmpObj = NULL; /* silence gcc 4 warning */ + Tcl_Namespace *namespacePtr = NULL; /* silence gcc 4 warning */ + int flags = 0; /* silence gcc 4 warning */ + + TclNewObj(resultObj); + + /* -map option */ + Tcl_ListObjAppendElement(NULL, resultObj, + Tcl_NewStringObj(configOptions[CONF_MAP], -1)); + Tcl_GetEnsembleMappingDict(NULL, token, &tmpObj); + Tcl_ListObjAppendElement(NULL, resultObj, + (tmpObj != NULL) ? tmpObj : Tcl_NewObj()); + + /* -namespace option */ + Tcl_ListObjAppendElement(NULL, resultObj, + Tcl_NewStringObj(configOptions[CONF_NAMESPACE], -1)); + Tcl_GetEnsembleNamespace(NULL, token, &namespacePtr); + Tcl_ListObjAppendElement(NULL, resultObj, + Tcl_NewStringObj(((Namespace *)namespacePtr)->fullName, + -1)); + + /* -prefix option */ + Tcl_ListObjAppendElement(NULL, resultObj, + Tcl_NewStringObj(configOptions[CONF_PREFIX], -1)); + Tcl_GetEnsembleFlags(NULL, token, &flags); + Tcl_ListObjAppendElement(NULL, resultObj, + Tcl_NewBooleanObj(flags & TCL_ENSEMBLE_PREFIX)); + + /* -subcommands option */ + Tcl_ListObjAppendElement(NULL, resultObj, + Tcl_NewStringObj(configOptions[CONF_SUBCMDS], -1)); + Tcl_GetEnsembleSubcommandList(NULL, token, &tmpObj); + Tcl_ListObjAppendElement(NULL, resultObj, + (tmpObj != NULL) ? tmpObj : Tcl_NewObj()); + + /* -unknown option */ + Tcl_ListObjAppendElement(NULL, resultObj, + Tcl_NewStringObj(configOptions[CONF_UNKNOWN], -1)); + Tcl_GetEnsembleUnknownHandler(NULL, token, &tmpObj); + Tcl_ListObjAppendElement(NULL, resultObj, + (tmpObj != NULL) ? tmpObj : Tcl_NewObj()); + + Tcl_SetObjResult(interp, resultObj); + return TCL_OK; + } else { + Tcl_DictSearch search; + Tcl_Obj *listObj; + int done, len, allocatedMapFlag = 0; + Tcl_Obj *subcmdObj = NULL, *mapObj = NULL, + *unknownObj = NULL; /* Defaults, silence gcc 4 warnings */ + int permitPrefix, flags = 0; /* silence gcc 4 warning */ + + Tcl_GetEnsembleSubcommandList(NULL, token, &subcmdObj); + Tcl_GetEnsembleMappingDict(NULL, token, &mapObj); + Tcl_GetEnsembleUnknownHandler(NULL, token, &unknownObj); + Tcl_GetEnsembleFlags(NULL, token, &flags); + permitPrefix = (flags & TCL_ENSEMBLE_PREFIX) != 0; + + objv += 4; + objc -= 4; + + /* + * Parse the option list, applying type checks as we go. Note that + * we are not incrementing any reference counts in the objects at + * this stage, so the presence of an option multiple times won't + * cause any memory leaks. + */ + + for (; objc>0 ; objc-=2,objv+=2 ) { + if (Tcl_GetIndexFromObj(interp, objv[0], configOptions, + "option", 0, &index) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + switch ((enum EnsConfigOpts) index) { + case CONF_SUBCMDS: + if (TclListObjLength(interp, objv[1], &len) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + subcmdObj = (len > 0 ? objv[1] : NULL); + continue; + case CONF_MAP: { + Tcl_Obj *patchedDict = NULL, *subcmdObj; + + /* + * Verify that the map is sensible. + */ + + if (Tcl_DictObjFirst(interp, objv[1], &search, + &subcmdObj, &listObj, &done) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + if (done) { + mapObj = NULL; + continue; + } + do { + Tcl_Obj **listv; + char *cmd; + + if (TclListObjGetElements(interp, listObj, &len, + &listv) != TCL_OK) { + Tcl_DictObjDone(&search); + if (patchedDict) { + Tcl_DecrRefCount(patchedDict); + } + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + if (len < 1) { + Tcl_SetResult(interp, + "ensemble subcommand implementations " + "must be non-empty lists", TCL_STATIC); + Tcl_DictObjDone(&search); + if (patchedDict) { + Tcl_DecrRefCount(patchedDict); + } + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + cmd = TclGetString(listv[0]); + if (!(cmd[0] == ':' && cmd[1] == ':')) { + Tcl_Obj *newList = Tcl_NewListObj(len, listv); + Tcl_Obj *newCmd = + Tcl_NewStringObj(nsPtr->fullName, -1); + if (nsPtr->parentPtr) { + Tcl_AppendStringsToObj(newCmd, "::", NULL); + } + Tcl_AppendObjToObj(newCmd, listv[0]); + Tcl_ListObjReplace(NULL, newList, 0,1, 1,&newCmd); + if (patchedDict == NULL) { + patchedDict = Tcl_DuplicateObj(objv[1]); + } + Tcl_DictObjPut(NULL, patchedDict, subcmdObj, + newList); + } + Tcl_DictObjNext(&search, &subcmdObj, &listObj, &done); + } while (!done); + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + mapObj = (patchedDict ? patchedDict : objv[1]); + if (patchedDict) { + allocatedMapFlag = 1; + } + continue; + } + case CONF_NAMESPACE: + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + Tcl_AppendResult(interp, "option -namespace is read-only", + NULL); + return TCL_ERROR; + case CONF_PREFIX: + if (Tcl_GetBooleanFromObj(interp, objv[1], + &permitPrefix) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + continue; + case CONF_UNKNOWN: + if (TclListObjLength(interp, objv[1], &len) != TCL_OK) { + if (allocatedMapFlag) { + Tcl_DecrRefCount(mapObj); + } + return TCL_ERROR; + } + unknownObj = (len > 0 ? objv[1] : NULL); + continue; + } + } + + /* + * Update the namespace now that we've finished the parsing stage. + */ + + flags = (permitPrefix ? flags|TCL_ENSEMBLE_PREFIX + : flags&~TCL_ENSEMBLE_PREFIX); + Tcl_SetEnsembleSubcommandList(interp, token, subcmdObj); + Tcl_SetEnsembleMappingDict(interp, token, mapObj); + Tcl_SetEnsembleUnknownHandler(interp, token, unknownObj); + Tcl_SetEnsembleFlags(interp, token, flags); + return TCL_OK; + } + + default: + Tcl_Panic("unexpected ensemble command"); + } + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_CreateEnsemble -- + * + * Create a simple ensemble attached to the given namespace. + * + * Results: + * The token for the command created. + * + * Side effects: + * The ensemble is created and marked for compilation. + * + *---------------------------------------------------------------------- + */ + +Tcl_Command +Tcl_CreateEnsemble( + Tcl_Interp *interp, + const char *name, + Tcl_Namespace *namespacePtr, + int flags) +{ + Namespace *nsPtr = (Namespace *) namespacePtr; + EnsembleConfig *ensemblePtr = (EnsembleConfig *) + ckalloc(sizeof(EnsembleConfig)); + Tcl_Obj *nameObj = NULL; + + if (nsPtr == NULL) { + nsPtr = (Namespace *) TclGetCurrentNamespace(interp); + } + + /* + * Make the name of the ensemble into a fully qualified name. This might + * allocate a temporary object. + */ + + if (!(name[0] == ':' && name[1] == ':')) { + nameObj = Tcl_NewStringObj(nsPtr->fullName, -1); + if (nsPtr->parentPtr == NULL) { + Tcl_AppendStringsToObj(nameObj, name, NULL); + } else { + Tcl_AppendStringsToObj(nameObj, "::", name, NULL); + } + Tcl_IncrRefCount(nameObj); + name = TclGetString(nameObj); + } + + ensemblePtr->nsPtr = nsPtr; + ensemblePtr->epoch = 0; + Tcl_InitHashTable(&ensemblePtr->subcommandTable, TCL_STRING_KEYS); + ensemblePtr->subcommandArrayPtr = NULL; + ensemblePtr->subcmdList = NULL; + ensemblePtr->subcommandDict = NULL; + ensemblePtr->flags = flags; + ensemblePtr->unknownHandler = NULL; + ensemblePtr->token = Tcl_CreateObjCommand(interp, name, + NsEnsembleImplementationCmd, ensemblePtr, DeleteEnsembleConfig); + ensemblePtr->next = (EnsembleConfig *) nsPtr->ensembles; + nsPtr->ensembles = (Tcl_Ensemble *) ensemblePtr; + + /* + * Trigger an eventual recomputation of the ensemble command set. Note + * that this is slightly tricky, as it means that we are not actually + * counting the number of namespace export actions, but it is the simplest + * way to go! + */ + + nsPtr->exportLookupEpoch++; + + if (flags & ENSEMBLE_COMPILE) { + ((Command *) ensemblePtr->token)->compileProc = TclCompileEnsemble; + } + + if (nameObj != NULL) { + TclDecrRefCount(nameObj); + } + return ensemblePtr->token; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_SetEnsembleSubcommandList -- + * + * Set the subcommand list for a particular ensemble. + * + * Results: + * Tcl result code (error if command token does not indicate an ensemble + * or the subcommand list - if non-NULL - is not a list). + * + * Side effects: + * The ensemble is updated and marked for recompilation. + * + *---------------------------------------------------------------------- + */ + +int +Tcl_SetEnsembleSubcommandList( + Tcl_Interp *interp, + Tcl_Command token, + Tcl_Obj *subcmdList) +{ + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + Tcl_Obj *oldList; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + return TCL_ERROR; + } + if (subcmdList != NULL) { + int length; + + if (TclListObjLength(interp, subcmdList, &length) != TCL_OK) { + return TCL_ERROR; + } + if (length < 1) { + subcmdList = NULL; + } + } + + ensemblePtr = cmdPtr->objClientData; + oldList = ensemblePtr->subcmdList; + ensemblePtr->subcmdList = subcmdList; + if (subcmdList != NULL) { + Tcl_IncrRefCount(subcmdList); + } + if (oldList != NULL) { + TclDecrRefCount(oldList); + } + + /* + * Trigger an eventual recomputation of the ensemble command set. Note + * that this is slightly tricky, as it means that we are not actually + * counting the number of namespace export actions, but it is the simplest + * way to go! + */ + + ensemblePtr->nsPtr->exportLookupEpoch++; + + /* + * Special hack to make compiling of [info exists] work when the + * dictionary is modified. + */ + + if (cmdPtr->compileProc != NULL) { + ((Interp *)interp)->compileEpoch++; + } + + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_SetEnsembleMappingDict -- + * + * Set the mapping dictionary for a particular ensemble. + * + * Results: + * Tcl result code (error if command token does not indicate an ensemble + * or the mapping - if non-NULL - is not a dict). + * + * Side effects: + * The ensemble is updated and marked for recompilation. * *---------------------------------------------------------------------- */ -Tcl_HashTable * -TclGetNamespaceCommandTable( - Tcl_Namespace *nsPtr) +int +Tcl_SetEnsembleMappingDict( + Tcl_Interp *interp, + Tcl_Command token, + Tcl_Obj *mapDict) { - return &((Namespace *) nsPtr)->cmdTable; + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + Tcl_Obj *oldDict; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + return TCL_ERROR; + } + if (mapDict != NULL) { + int size, done; + Tcl_DictSearch search; + Tcl_Obj *valuePtr; + + if (Tcl_DictObjSize(interp, mapDict, &size) != TCL_OK) { + return TCL_ERROR; + } + + for (Tcl_DictObjFirst(NULL, mapDict, &search, NULL, &valuePtr, &done); + !done; Tcl_DictObjNext(&search, NULL, &valuePtr, &done)) { + Tcl_Obj *cmdPtr; + const char *bytes; + + if (Tcl_ListObjIndex(interp, valuePtr, 0, &cmdPtr) != TCL_OK) { + Tcl_DictObjDone(&search); + return TCL_ERROR; + } + bytes = TclGetString(cmdPtr); + if (bytes[0] != ':' || bytes[1] != ':') { + Tcl_AppendResult(interp, + "ensemble target is not a fully-qualified command", + NULL); + Tcl_DictObjDone(&search); + return TCL_ERROR; + } + } + + if (size < 1) { + mapDict = NULL; + } + } + + ensemblePtr = cmdPtr->objClientData; + oldDict = ensemblePtr->subcommandDict; + ensemblePtr->subcommandDict = mapDict; + if (mapDict != NULL) { + Tcl_IncrRefCount(mapDict); + } + if (oldDict != NULL) { + TclDecrRefCount(oldDict); + } + + /* + * Trigger an eventual recomputation of the ensemble command set. Note + * that this is slightly tricky, as it means that we are not actually + * counting the number of namespace export actions, but it is the simplest + * way to go! + */ + + ensemblePtr->nsPtr->exportLookupEpoch++; + + /* + * Special hack to make compiling of [info exists] work when the + * dictionary is modified. + */ + + if (cmdPtr->compileProc != NULL) { + ((Interp *)interp)->compileEpoch++; + } + + return TCL_OK; } /* *---------------------------------------------------------------------- * - * TclGetNamespaceChildTable -- + * Tcl_SetEnsembleUnknownHandler -- * - * Returns the hash table of child namespaces. + * Set the unknown handler for a particular ensemble. * * Results: - * Pointer to the hash table. + * Tcl result code (error if command token does not indicate an ensemble + * or the unknown handler - if non-NULL - is not a list). * * Side effects: - * Might allocate memory. + * The ensemble is updated and marked for recompilation. * *---------------------------------------------------------------------- */ -Tcl_HashTable * -TclGetNamespaceChildTable( - Tcl_Namespace *nsPtr) +int +Tcl_SetEnsembleUnknownHandler( + Tcl_Interp *interp, + Tcl_Command token, + Tcl_Obj *unknownList) { - Namespace *nPtr = (Namespace *) nsPtr; -#ifndef BREAK_NAMESPACE_COMPAT - return &nPtr->childTable; -#else - if (nPtr->childTablePtr == NULL) { - nPtr->childTablePtr = ckalloc(sizeof(Tcl_HashTable)); - Tcl_InitHashTable(nPtr->childTablePtr, TCL_STRING_KEYS); - } - return nPtr->childTablePtr; -#endif + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + Tcl_Obj *oldList; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + return TCL_ERROR; + } + if (unknownList != NULL) { + int length; + + if (TclListObjLength(interp, unknownList, &length) != TCL_OK) { + return TCL_ERROR; + } + if (length < 1) { + unknownList = NULL; + } + } + + ensemblePtr = cmdPtr->objClientData; + oldList = ensemblePtr->unknownHandler; + ensemblePtr->unknownHandler = unknownList; + if (unknownList != NULL) { + Tcl_IncrRefCount(unknownList); + } + if (oldList != NULL) { + TclDecrRefCount(oldList); + } + + /* + * Trigger an eventual recomputation of the ensemble command set. Note + * that this is slightly tricky, as it means that we are not actually + * counting the number of namespace export actions, but it is the simplest + * way to go! + */ + + ensemblePtr->nsPtr->exportLookupEpoch++; + + return TCL_OK; } /* *---------------------------------------------------------------------- * - * TclLogCommandInfo -- + * Tcl_SetEnsembleFlags -- * - * This function is invoked after an error occurs in an interpreter. It - * adds information to iPtr->errorInfo/errorStack fields to describe the - * command that was being executed when the error occurred. When pc and - * tosPtr are non-NULL, conveying a bytecode execution "inner context", - * and the offending instruction is suitable, that inner context is - * recorded in errorStack. + * Set the flags for a particular ensemble. * * Results: - * None. + * Tcl result code (error if command token does not indicate an + * ensemble). * * Side effects: - * Information about the command is added to errorInfo/errorStack and the - * line number stored internally in the interpreter is set. + * The ensemble is updated and marked for recompilation. * *---------------------------------------------------------------------- */ -void -TclLogCommandInfo( - Tcl_Interp *interp, /* Interpreter in which to log information. */ - const char *script, /* First character in script containing - * command (must be <= command). */ - const char *command, /* First character in command that generated - * the error. */ - int length, /* Number of bytes in command (-1 means use - * all bytes up to first null byte). */ - const unsigned char *pc, /* Current pc of bytecode execution context */ - Tcl_Obj **tosPtr) /* Current stack of bytecode execution - * context */ +int +Tcl_SetEnsembleFlags( + Tcl_Interp *interp, + Tcl_Command token, + int flags) { - register const char *p; - Interp *iPtr = (Interp *) interp; - int overflow, limit = 150; - Var *varPtr, *arrayPtr; + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + int wasCompiled; - if (iPtr->flags & ERR_ALREADY_LOGGED) { + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + return TCL_ERROR; + } + + ensemblePtr = cmdPtr->objClientData; + wasCompiled = ensemblePtr->flags & ENSEMBLE_COMPILE; + + /* + * This API refuses to set the ENS_DEAD flag... + */ + + ensemblePtr->flags &= ENS_DEAD; + ensemblePtr->flags |= flags & ~ENS_DEAD; + + /* + * Trigger an eventual recomputation of the ensemble command set. Note + * that this is slightly tricky, as it means that we are not actually + * counting the number of namespace export actions, but it is the simplest + * way to go! + */ + + ensemblePtr->nsPtr->exportLookupEpoch++; + + /* + * If the ENSEMBLE_COMPILE flag status was changed, install or remove the + * compiler function and bump the interpreter's compilation epoch so that + * bytecode gets regenerated. + */ + + if (flags & ENSEMBLE_COMPILE) { + if (!wasCompiled) { + ((Command*) ensemblePtr->token)->compileProc = TclCompileEnsemble; + ((Interp *) interp)->compileEpoch++; + } + } else { + if (wasCompiled) { + ((Command*) ensemblePtr->token)->compileProc = NULL; + ((Interp *) interp)->compileEpoch++; + } + } + + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_GetEnsembleSubcommandList -- + * + * Get the list of subcommands associated with a particular ensemble. + * + * Results: + * Tcl result code (error if command token does not indicate an + * ensemble). The list of subcommands is returned by updating the + * variable pointed to by the last parameter (NULL if this is to be + * derived from the mapping dictionary or the associated namespace's + * exported commands). + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ + +int +Tcl_GetEnsembleSubcommandList( + Tcl_Interp *interp, + Tcl_Command token, + Tcl_Obj **subcmdListPtr) +{ + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + if (interp != NULL) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + } + return TCL_ERROR; + } + + ensemblePtr = cmdPtr->objClientData; + *subcmdListPtr = ensemblePtr->subcmdList; + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_GetEnsembleMappingDict -- + * + * Get the command mapping dictionary associated with a particular + * ensemble. + * + * Results: + * Tcl result code (error if command token does not indicate an + * ensemble). The mapping dict is returned by updating the variable + * pointed to by the last parameter (NULL if none is installed). + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ + +int +Tcl_GetEnsembleMappingDict( + Tcl_Interp *interp, + Tcl_Command token, + Tcl_Obj **mapDictPtr) +{ + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + if (interp != NULL) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + } + return TCL_ERROR; + } + + ensemblePtr = cmdPtr->objClientData; + *mapDictPtr = ensemblePtr->subcommandDict; + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_GetEnsembleUnknownHandler -- + * + * Get the unknown handler associated with a particular ensemble. + * + * Results: + * Tcl result code (error if command token does not indicate an + * ensemble). The unknown handler is returned by updating the variable + * pointed to by the last parameter (NULL if no handler is installed). + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ + +int +Tcl_GetEnsembleUnknownHandler( + Tcl_Interp *interp, + Tcl_Command token, + Tcl_Obj **unknownListPtr) +{ + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + if (interp != NULL) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + } + return TCL_ERROR; + } + + ensemblePtr = cmdPtr->objClientData; + *unknownListPtr = ensemblePtr->unknownHandler; + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_GetEnsembleFlags -- + * + * Get the flags for a particular ensemble. + * + * Results: + * Tcl result code (error if command token does not indicate an + * ensemble). The flags are returned by updating the variable pointed to + * by the last parameter. + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ + +int +Tcl_GetEnsembleFlags( + Tcl_Interp *interp, + Tcl_Command token, + int *flagsPtr) +{ + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + if (interp != NULL) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + } + return TCL_ERROR; + } + + ensemblePtr = cmdPtr->objClientData; + *flagsPtr = ensemblePtr->flags; + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_GetEnsembleNamespace -- + * + * Get the namespace associated with a particular ensemble. + * + * Results: + * Tcl result code (error if command token does not indicate an + * ensemble). Namespace is returned by updating the variable pointed to + * by the last parameter. + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ + +int +Tcl_GetEnsembleNamespace( + Tcl_Interp *interp, + Tcl_Command token, + Tcl_Namespace **namespacePtrPtr) +{ + Command *cmdPtr = (Command *) token; + EnsembleConfig *ensemblePtr; + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { + if (interp != NULL) { + Tcl_AppendResult(interp, "command is not an ensemble", NULL); + } + return TCL_ERROR; + } + + ensemblePtr = cmdPtr->objClientData; + *namespacePtrPtr = (Tcl_Namespace *) ensemblePtr->nsPtr; + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_FindEnsemble -- + * + * Given a command name, get the ensemble token for it, allowing for + * [namespace import]s. [Bug 1017022] + * + * Results: + * The token for the ensemble command with the given name, or NULL if the + * command either does not exist or is not an ensemble (when an error + * message will be written into the interp if thats non-NULL). + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ + +Tcl_Command +Tcl_FindEnsemble( + Tcl_Interp *interp, /* Where to do the lookup, and where to write + * the errors if TCL_LEAVE_ERR_MSG is set in + * the flags. */ + Tcl_Obj *cmdNameObj, /* Name of command to look up. */ + int flags) /* Either 0 or TCL_LEAVE_ERR_MSG; other flags + * are probably not useful. */ +{ + Command *cmdPtr; + + cmdPtr = (Command *) + Tcl_FindCommand(interp, TclGetString(cmdNameObj), NULL, flags); + if (cmdPtr == NULL) { + return NULL; + } + + if (cmdPtr->objProc != NsEnsembleImplementationCmd) { /* - * Someone else has already logged error information for this command; - * we shouldn't add anything more. + * Reuse existing infrastructure for following import link chains + * rather than duplicating it. */ - return; + cmdPtr = (Command *) TclGetOriginalCommand((Tcl_Command) cmdPtr); + + if (cmdPtr == NULL || cmdPtr->objProc != NsEnsembleImplementationCmd) { + if (flags & TCL_LEAVE_ERR_MSG) { + Tcl_AppendResult(interp, "\"", TclGetString(cmdNameObj), + "\" is not an ensemble command", NULL); + Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ENSEMBLE", + TclGetString(cmdNameObj), NULL); + } + return NULL; + } + } + + return (Tcl_Command) cmdPtr; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_IsEnsemble -- + * + * Simple test for ensemble-hood that takes into account imported + * ensemble commands as well. + * + * Results: + * Boolean value + * + * Side effects: + * None + * + *---------------------------------------------------------------------- + */ + +int +Tcl_IsEnsemble( + Tcl_Command token) +{ + Command *cmdPtr = (Command *) token; + if (cmdPtr->objProc == NsEnsembleImplementationCmd) { + return 1; + } + cmdPtr = (Command *) TclGetOriginalCommand((Tcl_Command) cmdPtr); + if (cmdPtr == NULL || cmdPtr->objProc != NsEnsembleImplementationCmd) { + return 0; + } + return 1; +} + +/* + *---------------------------------------------------------------------- + * + * TclMakeEnsemble -- + * + * Create an ensemble from a table of implementation commands. The + * ensemble will be subject to (limited) compilation if any of the + * implementation commands are compilable. + * + * Results: + * Handle for the ensemble, or NULL if creation of it fails. + * + * Side effects: + * May advance bytecode compilation epoch. + * + *---------------------------------------------------------------------- + */ + +Tcl_Command +TclMakeEnsemble( + Tcl_Interp *interp, + const char *name, + const EnsembleImplMap map[]) +{ + Tcl_Command ensemble; /* The overall ensemble. */ + Tcl_Namespace *tclNsPtr; /* Reference to the "::tcl" namespace. */ + Tcl_DString buf; + + tclNsPtr = Tcl_FindNamespace(interp, "::tcl", NULL, + TCL_CREATE_NS_IF_UNKNOWN); + if (tclNsPtr == NULL) { + Tcl_Panic("unable to find or create ::tcl namespace!"); + } + Tcl_DStringInit(&buf); + Tcl_DStringAppend(&buf, "::tcl::", -1); + Tcl_DStringAppend(&buf, name, -1); + tclNsPtr = Tcl_FindNamespace(interp, Tcl_DStringValue(&buf), NULL, + TCL_CREATE_NS_IF_UNKNOWN); + if (tclNsPtr == NULL) { + Tcl_Panic("unable to find or create %s namespace!", + Tcl_DStringValue(&buf)); + } + ensemble = Tcl_CreateEnsemble(interp, Tcl_DStringValue(&buf)+5, tclNsPtr, + TCL_ENSEMBLE_PREFIX); + Tcl_DStringAppend(&buf, "::", -1); + if (ensemble != NULL) { + Tcl_Obj *mapDict; + int i, compile = 0; + + TclNewObj(mapDict); + for (i=0 ; map[i].name != NULL ; i++) { + Tcl_Obj *fromObj, *toObj; + Command *cmdPtr; + + fromObj = Tcl_NewStringObj(map[i].name, -1); + TclNewStringObj(toObj, Tcl_DStringValue(&buf), + Tcl_DStringLength(&buf)); + Tcl_AppendToObj(toObj, map[i].name, -1); + Tcl_DictObjPut(NULL, mapDict, fromObj, toObj); + cmdPtr = (Command *) Tcl_CreateObjCommand(interp, + TclGetString(toObj), map[i].proc, NULL, NULL); + cmdPtr->compileProc = map[i].compileProc; + compile |= (map[i].compileProc != NULL); + } + Tcl_SetEnsembleMappingDict(interp, ensemble, mapDict); + if (compile) { + Tcl_SetEnsembleFlags(interp, ensemble, + TCL_ENSEMBLE_PREFIX | ENSEMBLE_COMPILE); + } + } + Tcl_DStringFree(&buf); + + return ensemble; +} + +/* + *---------------------------------------------------------------------- + * + * NsEnsembleImplementationCmd -- + * + * Implements an ensemble of commands (being those exported by a + * namespace other than the global namespace) as a command with the same + * (short) name as the namespace in the parent namespace. + * + * Results: + * A standard Tcl result code. Will be TCL_ERROR if the command is not an + * unambiguous prefix of any command exported by the ensemble's + * namespace. + * + * Side effects: + * Depends on the command within the namespace that gets executed. If the + * ensemble itself returns TCL_ERROR, a descriptive error message will be + * placed in the interpreter's result. + * + *---------------------------------------------------------------------- + */ + +static int +NsEnsembleImplementationCmd( + ClientData clientData, + Tcl_Interp *interp, + int objc, + Tcl_Obj *const objv[]) +{ + EnsembleConfig *ensemblePtr = clientData; + /* The ensemble itself. */ + Tcl_Obj **tempObjv; /* Space used to construct the list of + * arguments to pass to the command that + * implements the ensemble subcommand. */ + int result; /* The result of the subcommand execution. */ + Tcl_Obj *prefixObj; /* An object containing the prefix words of + * the command that implements the + * subcommand. */ + Tcl_HashEntry *hPtr; /* Used for efficient lookup of fully + * specified but not yet cached command + * names. */ + Tcl_Obj **prefixObjv; /* The list of objects to substitute in as the + * target command prefix. */ + int prefixObjc; /* Size of prefixObjv of course! */ + int reparseCount = 0; /* Number of reparses. */ + + if (objc < 2) { + Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?argument ...?"); + return TCL_ERROR; + } + + restartEnsembleParse: + if (ensemblePtr->nsPtr->flags & NS_DYING) { + /* + * Don't know how we got here, but make things give up quickly. + */ + + if (!Tcl_InterpDeleted(interp)) { + Tcl_AppendResult(interp, + "ensemble activated for deleted namespace", NULL); + } + return TCL_ERROR; } - if (command != NULL) { + /* + * Determine if the table of subcommands is right. If so, we can just look + * up in there and go straight to dispatch. + */ + + if (ensemblePtr->epoch == ensemblePtr->nsPtr->exportLookupEpoch) { /* - * Compute the line number where the error occurred. + * Table of subcommands is still valid; therefore there might be a + * valid cache of discovered information which we can reuse. Do the + * check here, and if we're still valid, we can jump straight to the + * part where we do the invocation of the subcommand. */ - iPtr->errorLine = 1; - for (p = script; p != command; p++) { - if (*p == '\n') { - iPtr->errorLine++; + if (objv[1]->typePtr == &tclEnsembleCmdType) { + EnsembleCmdRep *ensembleCmd = objv[1]->internalRep.twoPtrValue.ptr1; + + if (ensembleCmd->nsPtr == ensemblePtr->nsPtr && + ensembleCmd->epoch == ensemblePtr->epoch && + ensembleCmd->token == ensemblePtr->token) { + prefixObj = ensembleCmd->realPrefixObj; + Tcl_IncrRefCount(prefixObj); + goto runResultingSubcommand; } } + } else { + BuildEnsembleConfig(ensemblePtr); + ensemblePtr->epoch = ensemblePtr->nsPtr->exportLookupEpoch; + } + + /* + * Look in the hashtable for the subcommand name; this is the fastest way + * of all. + */ + + hPtr = Tcl_FindHashEntry(&ensemblePtr->subcommandTable, + TclGetString(objv[1])); + if (hPtr != NULL) { + char *fullName = Tcl_GetHashKey(&ensemblePtr->subcommandTable, hPtr); + + prefixObj = Tcl_GetHashValue(hPtr); + + /* + * Cache for later in the subcommand object. + */ - if (length < 0) { - length = strlen(command); + MakeCachedEnsembleCommand(objv[1], ensemblePtr, fullName, prefixObj); + } else if (!(ensemblePtr->flags & TCL_ENSEMBLE_PREFIX)) { + /* + * Could not map, no prefixing, go to unknown/error handling. + */ + + goto unknownOrAmbiguousSubcommand; + } else { + /* + * If we've not already confirmed the command with the hash as part of + * building our export table, we need to scan the sorted array for + * matches. + */ + + char *subcmdName; /* Name of the subcommand, or unique prefix of + * it (will be an error for a non-unique + * prefix). */ + char *fullName = NULL; /* Full name of the subcommand. */ + int stringLength, i; + int tableLength = ensemblePtr->subcommandTable.numEntries; + + subcmdName = TclGetString(objv[1]); + stringLength = objv[1]->length; + for (i=0 ; i<tableLength ; i++) { + register int cmp = strncmp(subcmdName, + ensemblePtr->subcommandArrayPtr[i], + (unsigned) stringLength); + + if (cmp == 0) { + if (fullName != NULL) { + /* + * Since there's never the exact-match case to worry about + * (hash search filters this), getting here indicates that + * our subcommand is an ambiguous prefix of (at least) two + * exported subcommands, which is an error case. + */ + + goto unknownOrAmbiguousSubcommand; + } + fullName = ensemblePtr->subcommandArrayPtr[i]; + } else if (cmp < 0) { + /* + * Because we are searching a sorted table, we can now stop + * searching because we have gone past anything that could + * possibly match. + */ + + break; + } } - overflow = (length > limit); - Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( - "\n %s\n\"%.*s%s\"", ((iPtr->errorInfo == NULL) - ? "while executing" : "invoked from within"), - (overflow ? limit : length), command, - (overflow ? "..." : ""))); - - varPtr = TclObjLookupVarEx(interp, iPtr->eiVar, NULL, TCL_GLOBAL_ONLY, - NULL, 0, 0, &arrayPtr); - if ((varPtr == NULL) || !TclIsVarTraced(varPtr)) { + if (fullName == NULL) { /* - * Should not happen. + * The subcommand is not a prefix of anything, so bail out! */ - return; + goto unknownOrAmbiguousSubcommand; + } + hPtr = Tcl_FindHashEntry(&ensemblePtr->subcommandTable, fullName); + if (hPtr == NULL) { + Tcl_Panic("full name %s not found in supposedly synchronized hash", + fullName); + } + prefixObj = Tcl_GetHashValue(hPtr); + + /* + * Cache for later in the subcommand object. + */ + + MakeCachedEnsembleCommand(objv[1], ensemblePtr, fullName, prefixObj); + } + + Tcl_IncrRefCount(prefixObj); + runResultingSubcommand: + + /* + * Do the real work of execution of the subcommand by building an array of + * objects (note that this is potentially not the same length as the + * number of arguments to this ensemble command), populating it and then + * feeding it back through the main command-lookup engine. In theory, we + * could look up the command in the namespace ourselves, as we already + * have the namespace in which it is guaranteed to exist, but we don't do + * that (the cacheing of the command object used should help with that.) + */ + + { + Interp *iPtr = (Interp *) interp; + int isRootEnsemble; + Tcl_Obj *copyObj; + + /* + * Get the prefix that we're rewriting to. To do this we need to + * ensure that the internal representation of the list does not change + * so that we can safely keep the internal representations of the + * elements in the list. + */ + + copyObj = TclListObjCopy(NULL, prefixObj); + TclListObjGetElements(NULL, copyObj, &prefixObjc, &prefixObjv); + + /* + * Record what arguments the script sent in so that things like + * Tcl_WrongNumArgs can give the correct error message. + */ + + isRootEnsemble = (iPtr->ensembleRewrite.sourceObjs == NULL); + if (isRootEnsemble) { + iPtr->ensembleRewrite.sourceObjs = objv; + iPtr->ensembleRewrite.numRemovedObjs = 2; + iPtr->ensembleRewrite.numInsertedObjs = prefixObjc; } else { - Tcl_HashEntry *hPtr - = Tcl_FindHashEntry(&iPtr->varTraces, (char *) varPtr); - VarTrace *tracePtr = Tcl_GetHashValue(hPtr); + int ni = iPtr->ensembleRewrite.numInsertedObjs; - if (tracePtr->traceProc != EstablishErrorInfoTraces) { - /* - * The most recent trace set on ::errorInfo is not the one the - * core itself puts on last. This means some other code is - * tracing the variable, and the additional trace(s) might be - * write traces that expect the timing of writes to - * ::errorInfo that existed Tcl releases before 8.5. To - * satisfy that compatibility need, we write the current - * -errorinfo value to the ::errorInfo variable. - */ + if (ni < 2) { + iPtr->ensembleRewrite.numRemovedObjs += 2 - ni; + iPtr->ensembleRewrite.numInsertedObjs += prefixObjc-1; + } else { + iPtr->ensembleRewrite.numInsertedObjs += prefixObjc-2; + } + } + + /* + * Allocate a workspace and build the list of arguments to pass to the + * target command in it. + */ + + tempObjv = (Tcl_Obj **) TclStackAlloc(interp, + (int) sizeof(Tcl_Obj *) * (objc - 2 + prefixObjc)); + memcpy(tempObjv, prefixObjv, sizeof(Tcl_Obj *) * prefixObjc); + memcpy(tempObjv+prefixObjc, objv+2, sizeof(Tcl_Obj *) * (objc-2)); + + /* + * Hand off to the target command. + */ + + result = Tcl_EvalObjv(interp, objc-2+prefixObjc, tempObjv, + TCL_EVAL_INVOKE); - Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL, iPtr->errorInfo, - TCL_GLOBAL_ONLY); + /* + * Clean up. + */ + + TclStackFree(interp, tempObjv); + Tcl_DecrRefCount(copyObj); + if (isRootEnsemble) { + iPtr->ensembleRewrite.sourceObjs = NULL; + iPtr->ensembleRewrite.numRemovedObjs = 0; + iPtr->ensembleRewrite.numInsertedObjs = 0; + } + } + Tcl_DecrRefCount(prefixObj); + return result; + + unknownOrAmbiguousSubcommand: + /* + * Have not been able to match the subcommand asked for with a real + * subcommand that we export. See whether a handler has been registered + * for dealing with this situation. Will only call (at most) once for any + * particular ensemble invocation. + */ + + if (ensemblePtr->unknownHandler != NULL && reparseCount++ < 1) { + int paramc, i; + Tcl_Obj **paramv, *unknownCmd, *ensObj; + + unknownCmd = Tcl_DuplicateObj(ensemblePtr->unknownHandler); + TclNewObj(ensObj); + Tcl_GetCommandFullName(interp, ensemblePtr->token, ensObj); + Tcl_ListObjAppendElement(NULL, unknownCmd, ensObj); + for (i=1 ; i<objc ; i++) { + Tcl_ListObjAppendElement(NULL, unknownCmd, objv[i]); + } + TclListObjGetElements(NULL, unknownCmd, ¶mc, ¶mv); + Tcl_Preserve(ensemblePtr); + Tcl_IncrRefCount(unknownCmd); + result = Tcl_EvalObjv(interp, paramc, paramv, 0); + if (result == TCL_OK) { + prefixObj = Tcl_GetObjResult(interp); + Tcl_IncrRefCount(prefixObj); + Tcl_DecrRefCount(unknownCmd); + Tcl_Release(ensemblePtr); + Tcl_ResetResult(interp); + if (ensemblePtr->flags & ENS_DEAD) { + Tcl_DecrRefCount(prefixObj); + Tcl_SetResult(interp, + "unknown subcommand handler deleted its ensemble", + TCL_STATIC); + return TCL_ERROR; + } + + /* + * Namespace is still there. Check if the result is a valid list. + * If it is, and it is non-empty, that list is what we are using + * as our replacement. + */ + + if (TclListObjLength(interp, prefixObj, &prefixObjc) != TCL_OK) { + Tcl_DecrRefCount(prefixObj); + Tcl_AddErrorInfo(interp, "\n while parsing result of " + "ensemble unknown subcommand handler"); + return TCL_ERROR; + } + if (prefixObjc > 0) { + goto runResultingSubcommand; } + + /* + * Namespace alive & empty result => reparse. + */ + + Tcl_DecrRefCount(prefixObj); + goto restartEnsembleParse; } + if (!Tcl_InterpDeleted(interp)) { + if (result != TCL_ERROR) { + char buf[TCL_INTEGER_SPACE]; + + Tcl_ResetResult(interp); + Tcl_SetResult(interp, + "unknown subcommand handler returned bad code: ", + TCL_STATIC); + switch (result) { + case TCL_RETURN: + Tcl_AppendResult(interp, "return", NULL); + break; + case TCL_BREAK: + Tcl_AppendResult(interp, "break", NULL); + break; + case TCL_CONTINUE: + Tcl_AppendResult(interp, "continue", NULL); + break; + default: + sprintf(buf, "%d", result); + Tcl_AppendResult(interp, buf, NULL); + } + Tcl_AddErrorInfo(interp, "\n result of " + "ensemble unknown subcommand handler: "); + Tcl_AddErrorInfo(interp, TclGetString(unknownCmd)); + } else { + Tcl_AddErrorInfo(interp, + "\n (ensemble unknown subcommand handler)"); + } + } + Tcl_DecrRefCount(unknownCmd); + Tcl_Release(ensemblePtr); + return TCL_ERROR; } /* - * TIP #348 + * We cannot determine what subcommand to hand off to, so generate a + * (standard) failure message. Note the one odd case compared with + * standard ensemble-like command, which is where a namespace has no + * exported commands at all... */ - if (Tcl_IsShared(iPtr->errorStack)) { - Tcl_Obj *newObj; - - newObj = Tcl_DuplicateObj(iPtr->errorStack); - Tcl_DecrRefCount(iPtr->errorStack); - Tcl_IncrRefCount(newObj); - iPtr->errorStack = newObj; + Tcl_ResetResult(interp); + Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ENSEMBLE", + TclGetString(objv[1]), NULL); + if (ensemblePtr->subcommandTable.numEntries == 0) { + Tcl_AppendResult(interp, "unknown subcommand \"",TclGetString(objv[1]), + "\": namespace ", ensemblePtr->nsPtr->fullName, + " does not export any commands", NULL); + Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "SUBCOMMAND", + TclGetString(objv[1]), NULL); + return TCL_ERROR; } - if (iPtr->resetErrorStack) { - int len; + Tcl_AppendResult(interp, "unknown ", + (ensemblePtr->flags & TCL_ENSEMBLE_PREFIX ? "or ambiguous " : ""), + "subcommand \"", TclGetString(objv[1]), "\": must be ", NULL); + if (ensemblePtr->subcommandTable.numEntries == 1) { + Tcl_AppendResult(interp, ensemblePtr->subcommandArrayPtr[0], NULL); + } else { + int i; - iPtr->resetErrorStack = 0; - Tcl_ListObjLength(interp, iPtr->errorStack, &len); + for (i=0 ; i<ensemblePtr->subcommandTable.numEntries-1 ; i++) { + Tcl_AppendResult(interp, + ensemblePtr->subcommandArrayPtr[i], ", ", NULL); + } + Tcl_AppendResult(interp, "or ", + ensemblePtr->subcommandArrayPtr[i], NULL); + } + Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "SUBCOMMAND", + TclGetString(objv[1]), NULL); + return TCL_ERROR; +} + +/* + *---------------------------------------------------------------------- + * + * MakeCachedEnsembleCommand -- + * + * Cache what we've computed so far; it's not nice to repeatedly copy + * strings about. Note that to do this, we start by deleting any old + * representation that there was (though if it was an out of date + * ensemble rep, we can skip some of the deallocation process.) + * + * Results: + * None + * + * Side effects: + * Alters the internal representation of the first object parameter. + * + *---------------------------------------------------------------------- + */ +static void +MakeCachedEnsembleCommand( + Tcl_Obj *objPtr, + EnsembleConfig *ensemblePtr, + const char *subcommandName, + Tcl_Obj *prefixObjPtr) +{ + register EnsembleCmdRep *ensembleCmd; + int length; + + if (objPtr->typePtr == &tclEnsembleCmdType) { + ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1; + Tcl_DecrRefCount(ensembleCmd->realPrefixObj); + ensembleCmd->nsPtr->refCount--; + if ((ensembleCmd->nsPtr->refCount == 0) + && (ensembleCmd->nsPtr->flags & NS_DEAD)) { + NamespaceFree(ensembleCmd->nsPtr); + } + ckfree(ensembleCmd->fullSubcmdName); + } else { /* - * Reset while keeping the list intrep as much as possible. + * Kill the old internal rep, and replace it with a brand new one of + * our own. */ - Tcl_ListObjReplace(interp, iPtr->errorStack, 0, len, 0, NULL); - if (pc != NULL) { - Tcl_Obj *innerContext; + TclFreeIntRep(objPtr); + ensembleCmd = (EnsembleCmdRep *) ckalloc(sizeof(EnsembleCmdRep)); + objPtr->internalRep.twoPtrValue.ptr1 = ensembleCmd; + objPtr->typePtr = &tclEnsembleCmdType; + } + + /* + * Populate the internal rep. + */ + + ensembleCmd->nsPtr = ensemblePtr->nsPtr; + ensembleCmd->epoch = ensemblePtr->epoch; + ensembleCmd->token = ensemblePtr->token; + ensemblePtr->nsPtr->refCount++; + ensembleCmd->realPrefixObj = prefixObjPtr; + length = strlen(subcommandName)+1; + ensembleCmd->fullSubcmdName = ckalloc((unsigned) length); + memcpy(ensembleCmd->fullSubcmdName, subcommandName, (unsigned) length); + Tcl_IncrRefCount(ensembleCmd->realPrefixObj); +} + +/* + *---------------------------------------------------------------------- + * + * DeleteEnsembleConfig -- + * + * Destroys the data structure used to represent an ensemble. This is + * called when the ensemble's command is deleted (which happens + * automatically if the ensemble's namespace is deleted.) Maintainers + * should note that ensembles should be deleted by deleting their + * commands. + * + * Results: + * None. + * + * Side effects: + * Memory is (eventually) deallocated. + * + *---------------------------------------------------------------------- + */ + +static void +DeleteEnsembleConfig( + ClientData clientData) +{ + EnsembleConfig *ensemblePtr = clientData; + Namespace *nsPtr = ensemblePtr->nsPtr; + Tcl_HashSearch search; + Tcl_HashEntry *hEnt; + + /* + * Unlink from the ensemble chain if it has not been marked as having been + * done already. + */ - innerContext = TclGetInnerContext(interp, pc, tosPtr); - if (innerContext != NULL) { - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, - iPtr->innerLiteral); - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, innerContext); + if (ensemblePtr->next != ensemblePtr) { + EnsembleConfig *ensPtr = (EnsembleConfig *) nsPtr->ensembles; + if (ensPtr == ensemblePtr) { + nsPtr->ensembles = (Tcl_Ensemble *) ensemblePtr->next; + } else { + while (ensPtr != NULL) { + if (ensPtr->next == ensemblePtr) { + ensPtr->next = ensemblePtr->next; + break; + } + ensPtr = ensPtr->next; } - } else if (command != NULL) { - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, - iPtr->innerLiteral); - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, - Tcl_NewStringObj(command, length)); } - } + } + + /* + * Mark the namespace as dead so code that uses Tcl_Preserve() can tell + * whether disaster happened anyway. + */ + + ensemblePtr->flags |= ENS_DEAD; + + /* + * Kill the pointer-containing fields. + */ - if (!iPtr->framePtr->objc) { + if (ensemblePtr->subcommandTable.numEntries != 0) { + ckfree((char *) ensemblePtr->subcommandArrayPtr); + } + hEnt = Tcl_FirstHashEntry(&ensemblePtr->subcommandTable, &search); + while (hEnt != NULL) { + Tcl_Obj *prefixObj = Tcl_GetHashValue(hEnt); + + Tcl_DecrRefCount(prefixObj); + hEnt = Tcl_NextHashEntry(&search); + } + Tcl_DeleteHashTable(&ensemblePtr->subcommandTable); + if (ensemblePtr->subcmdList != NULL) { + Tcl_DecrRefCount(ensemblePtr->subcmdList); + } + if (ensemblePtr->subcommandDict != NULL) { + Tcl_DecrRefCount(ensemblePtr->subcommandDict); + } + if (ensemblePtr->unknownHandler != NULL) { + Tcl_DecrRefCount(ensemblePtr->unknownHandler); + } + + /* + * Arrange for the structure to be reclaimed. Note that this is complex + * because we have to make sure that we can react sensibly when an + * ensemble is deleted during the process of initialising the ensemble + * (especially the unknown callback.) + */ + + Tcl_EventuallyFree(ensemblePtr, TCL_DYNAMIC); +} + +/* + *---------------------------------------------------------------------- + * + * BuildEnsembleConfig -- + * + * Create the internal data structures that describe how an ensemble + * looks, being a hash mapping from the full command name to the Tcl list + * that describes the implementation prefix words, and a sorted array of + * all the full command names to allow for reasonably efficient + * unambiguous prefix handling. + * + * Results: + * None. + * + * Side effects: + * Reallocates and rebuilds the hash table and array stored at the + * ensemblePtr argument. For large ensembles or large namespaces, this is + * a potentially expensive operation. + * + *---------------------------------------------------------------------- + */ + +static void +BuildEnsembleConfig( + EnsembleConfig *ensemblePtr) +{ + Tcl_HashSearch search; /* Used for scanning the set of commands in + * the namespace that backs up this + * ensemble. */ + int i, j, isNew; + Tcl_HashTable *hash = &ensemblePtr->subcommandTable; + Tcl_HashEntry *hPtr; + + if (hash->numEntries != 0) { /* - * Special frame, nothing to report. + * Remove pre-existing table. */ - } else if (iPtr->varFramePtr != iPtr->framePtr) { + + Tcl_HashSearch search; + + ckfree((char *) ensemblePtr->subcommandArrayPtr); + hPtr = Tcl_FirstHashEntry(hash, &search); + while (hPtr != NULL) { + Tcl_Obj *prefixObj = Tcl_GetHashValue(hPtr); + Tcl_DecrRefCount(prefixObj); + hPtr = Tcl_NextHashEntry(&search); + } + Tcl_DeleteHashTable(hash); + Tcl_InitHashTable(hash, TCL_STRING_KEYS); + } + + /* + * See if we've got an export list. If so, we will only export exactly + * those commands, which may be either implemented by the prefix in the + * subcommandDict or mapped directly onto the namespace's commands. + */ + + if (ensemblePtr->subcmdList != NULL) { + Tcl_Obj **subcmdv, *target, *cmdObj, *cmdPrefixObj; + int subcmdc; + + TclListObjGetElements(NULL, ensemblePtr->subcmdList, &subcmdc, + &subcmdv); + for (i=0 ; i<subcmdc ; i++) { + char *name = TclGetString(subcmdv[i]); + + hPtr = Tcl_CreateHashEntry(hash, name, &isNew); + + /* + * Skip non-unique cases. + */ + + if (!isNew) { + continue; + } + + /* + * Look in our dictionary (if present) for the command. + */ + + if (ensemblePtr->subcommandDict != NULL) { + Tcl_DictObjGet(NULL, ensemblePtr->subcommandDict, subcmdv[i], + &target); + if (target != NULL) { + Tcl_SetHashValue(hPtr, target); + Tcl_IncrRefCount(target); + continue; + } + } + + /* + * Not there, so map onto the namespace. Note in this case that we + * do not guarantee that the command is actually there; that is + * the programmer's responsibility (or [::unknown] of course). + */ + + cmdObj = Tcl_NewStringObj(ensemblePtr->nsPtr->fullName, -1); + if (ensemblePtr->nsPtr->parentPtr != NULL) { + Tcl_AppendStringsToObj(cmdObj, "::", name, NULL); + } else { + Tcl_AppendStringsToObj(cmdObj, name, NULL); + } + cmdPrefixObj = Tcl_NewListObj(1, &cmdObj); + Tcl_SetHashValue(hPtr, cmdPrefixObj); + Tcl_IncrRefCount(cmdPrefixObj); + } + } else if (ensemblePtr->subcommandDict != NULL) { /* - * uplevel case, [lappend errorstack UP $relativelevel] + * No subcmd list, but we do have a mapping dictionary so we should + * use the keys of that. Convert the dictionary's contents into the + * form required for the ensemble's internal hashtable. */ - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, iPtr->upLiteral); - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, Tcl_NewIntObj( - iPtr->framePtr->level - iPtr->varFramePtr->level)); - } else if (iPtr->framePtr != iPtr->rootFramePtr) { + Tcl_DictSearch dictSearch; + Tcl_Obj *keyObj, *valueObj; + int done; + + Tcl_DictObjFirst(NULL, ensemblePtr->subcommandDict, &dictSearch, + &keyObj, &valueObj, &done); + while (!done) { + char *name = TclGetString(keyObj); + + hPtr = Tcl_CreateHashEntry(hash, name, &isNew); + Tcl_SetHashValue(hPtr, valueObj); + Tcl_IncrRefCount(valueObj); + Tcl_DictObjNext(&dictSearch, &keyObj, &valueObj, &done); + } + } else { /* - * normal case, [lappend errorstack CALL [info level 0]] + * Discover what commands are actually exported by the namespace. + * What we have is an array of patterns and a hash table whose keys + * are the command names exported by the namespace (the contents do + * not matter here.) We must find out what commands are actually + * exported by filtering each command in the namespace against each of + * the patterns in the export list. Note that we use an intermediate + * hash table to make memory management easier, and because that makes + * exact matching far easier too. + * + * Suggestion for future enhancement: compute the unique prefixes and + * place them in the hash too, which should make for even faster + * matching. */ - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, iPtr->callLiteral); - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, Tcl_NewListObj( - iPtr->framePtr->objc, iPtr->framePtr->objv)); + hPtr = Tcl_FirstHashEntry(&ensemblePtr->nsPtr->cmdTable, &search); + for (; hPtr!= NULL ; hPtr=Tcl_NextHashEntry(&search)) { + char *nsCmdName = /* Name of command in namespace. */ + Tcl_GetHashKey(&ensemblePtr->nsPtr->cmdTable, hPtr); + + for (i=0 ; i<ensemblePtr->nsPtr->numExportPatterns ; i++) { + if (Tcl_StringMatch(nsCmdName, + ensemblePtr->nsPtr->exportArrayPtr[i])) { + hPtr = Tcl_CreateHashEntry(hash, nsCmdName, &isNew); + + /* + * Remember, hash entries have a full reference to the + * substituted part of the command (as a list) as their + * content! + */ + + if (isNew) { + Tcl_Obj *cmdObj, *cmdPrefixObj; + + TclNewObj(cmdObj); + Tcl_AppendStringsToObj(cmdObj, + ensemblePtr->nsPtr->fullName, + (ensemblePtr->nsPtr->parentPtr ? "::" : ""), + nsCmdName, NULL); + cmdPrefixObj = Tcl_NewListObj(1, &cmdObj); + Tcl_SetHashValue(hPtr, cmdPrefixObj); + Tcl_IncrRefCount(cmdPrefixObj); + } + break; + } + } + } + } + + if (hash->numEntries == 0) { + ensemblePtr->subcommandArrayPtr = NULL; + return; + } + + /* + * Create a sorted array of all subcommands in the ensemble; hash tables + * are all very well for a quick look for an exact match, but they can't + * determine things like whether a string is a prefix of another (not + * without lots of preparation anyway) and they're no good for when we're + * generating the error message either. + * + * We do this by filling an array with the names (we use the hash keys + * directly to save a copy, since any time we change the array we change + * the hash too, and vice versa) and running quicksort over the array. + */ + + ensemblePtr->subcommandArrayPtr = (char **) + ckalloc(sizeof(char *) * hash->numEntries); + + /* + * Fill array from both ends as this makes us less likely to end up with + * performance problems in qsort(), which is good. Note that doing this + * makes this code much more opaque, but the naive alternatve: + * + * for (hPtr=Tcl_FirstHashEntry(hash,&search),i=0 ; + * hPtr!=NULL ; hPtr=Tcl_NextHashEntry(&search),i++) { + * ensemblePtr->subcommandArrayPtr[i] = Tcl_GetHashKey(hash, &hPtr); + * } + * + * can produce long runs of precisely ordered table entries when the + * commands in the namespace are declared in a sorted fashion (an ordering + * some people like) and the hashing functions (or the command names + * themselves) are fairly unfortunate. By filling from both ends, it + * requires active malice (and probably a debugger) to get qsort() to have + * awful runtime behaviour. + */ + + i = 0; + j = hash->numEntries; + hPtr = Tcl_FirstHashEntry(hash, &search); + while (hPtr != NULL) { + ensemblePtr->subcommandArrayPtr[i++] = Tcl_GetHashKey(hash, hPtr); + hPtr = Tcl_NextHashEntry(&search); + if (hPtr == NULL) { + break; + } + ensemblePtr->subcommandArrayPtr[--j] = Tcl_GetHashKey(hash, hPtr); + hPtr = Tcl_NextHashEntry(&search); + } + if (hash->numEntries > 1) { + qsort(ensemblePtr->subcommandArrayPtr, (unsigned)hash->numEntries, + sizeof(char *), NsEnsembleStringOrder); } } /* *---------------------------------------------------------------------- * - * TclErrorStackResetIf -- + * NsEnsembleStringOrder -- * - * The TIP 348 reset/no-bc part of TLCI, for specific use by - * TclCompileSyntaxError. + * Helper function to compare two pointers to two strings for use with + * qsort(). + * + * Results: + * -1 if the first string is smaller, 1 if the second string is smaller, + * and 0 if they are equal. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +static int +NsEnsembleStringOrder( + const void *strPtr1, + const void *strPtr2) +{ + return strcmp(*(const char **)strPtr1, *(const char **)strPtr2); +} + +/* + *---------------------------------------------------------------------- + * + * FreeEnsembleCmdRep -- + * + * Destroys the internal representation of a Tcl_Obj that has been + * holding information about a command in an ensemble. * * Results: * None. * * Side effects: - * Reset errorstack if it needs be, and in that case remember the - * passed-in error message as inner context. + * Memory is deallocated. If this held the last reference to a + * namespace's main structure, that main structure will also be + * destroyed. * *---------------------------------------------------------------------- */ -void -TclErrorStackResetIf( - Tcl_Interp *interp, - const char *msg, - int length) +static void +FreeEnsembleCmdRep( + Tcl_Obj *objPtr) { - Interp *iPtr = (Interp *) interp; + EnsembleCmdRep *ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1; - if (Tcl_IsShared(iPtr->errorStack)) { - Tcl_Obj *newObj; - - newObj = Tcl_DuplicateObj(iPtr->errorStack); - Tcl_DecrRefCount(iPtr->errorStack); - Tcl_IncrRefCount(newObj); - iPtr->errorStack = newObj; + Tcl_DecrRefCount(ensembleCmd->realPrefixObj); + ckfree(ensembleCmd->fullSubcmdName); + ensembleCmd->nsPtr->refCount--; + if ((ensembleCmd->nsPtr->refCount == 0) + && (ensembleCmd->nsPtr->flags & NS_DEAD)) { + NamespaceFree(ensembleCmd->nsPtr); } - if (iPtr->resetErrorStack) { - int len; + ckfree((char *) ensembleCmd); +} + +/* + *---------------------------------------------------------------------- + * + * DupEnsembleCmdRep -- + * + * Makes one Tcl_Obj into a copy of another that is a subcommand of an + * ensemble. + * + * Results: + * None. + * + * Side effects: + * Memory is allocated, and the namespace that the ensemble is built on + * top of gains another reference. + * + *---------------------------------------------------------------------- + */ - iPtr->resetErrorStack = 0; - Tcl_ListObjLength(interp, iPtr->errorStack, &len); +static void +DupEnsembleCmdRep( + Tcl_Obj *objPtr, + Tcl_Obj *copyPtr) +{ + EnsembleCmdRep *ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1; + EnsembleCmdRep *ensembleCopy = (EnsembleCmdRep *) + ckalloc(sizeof(EnsembleCmdRep)); + int length = strlen(ensembleCmd->fullSubcmdName); + + copyPtr->typePtr = &tclEnsembleCmdType; + copyPtr->internalRep.twoPtrValue.ptr1 = ensembleCopy; + ensembleCopy->nsPtr = ensembleCmd->nsPtr; + ensembleCopy->epoch = ensembleCmd->epoch; + ensembleCopy->token = ensembleCmd->token; + ensembleCopy->nsPtr->refCount++; + ensembleCopy->realPrefixObj = ensembleCmd->realPrefixObj; + Tcl_IncrRefCount(ensembleCopy->realPrefixObj); + ensembleCopy->fullSubcmdName = ckalloc((unsigned) length+1); + memcpy(ensembleCopy->fullSubcmdName, ensembleCmd->fullSubcmdName, + (unsigned) length+1); +} + +/* + *---------------------------------------------------------------------- + * + * StringOfEnsembleCmdRep -- + * + * Creates a string representation of a Tcl_Obj that holds a subcommand + * of an ensemble. + * + * Results: + * None. + * + * Side effects: + * The object gains a string (UTF-8) representation. + * + *---------------------------------------------------------------------- + */ - /* - * Reset while keeping the list intrep as much as possible. - */ +static void +StringOfEnsembleCmdRep( + Tcl_Obj *objPtr) +{ + EnsembleCmdRep *ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1; + int length = strlen(ensembleCmd->fullSubcmdName); - Tcl_ListObjReplace(interp, iPtr->errorStack, 0, len, 0, NULL); - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, iPtr->innerLiteral); - Tcl_ListObjAppendElement(NULL, iPtr->errorStack, - Tcl_NewStringObj(msg, length)); - } + objPtr->length = length; + objPtr->bytes = ckalloc((unsigned) length+1); + memcpy(objPtr->bytes, ensembleCmd->fullSubcmdName, (unsigned) length+1); } /* @@ -5043,15 +6920,15 @@ TclErrorStackResetIf( * Tcl_LogCommandInfo -- * * This function is invoked after an error occurs in an interpreter. It - * adds information to iPtr->errorInfo/errorStack fields to describe the - * command that was being executed when the error occurred. + * adds information to iPtr->errorInfo field to describe the command that + * was being executed when the error occurred. * * Results: * None. * * Side effects: - * Information about the command is added to errorInfo/errorStack and the - * line number stored internally in the interpreter is set. + * Information about the command is added to errorInfo and the line + * number stored internally in the interpreter is set. * *---------------------------------------------------------------------- */ @@ -5066,15 +6943,73 @@ Tcl_LogCommandInfo( int length) /* Number of bytes in command (-1 means use * all bytes up to first null byte). */ { - TclLogCommandInfo(interp, script, command, length, NULL, NULL); -} + register const char *p; + Interp *iPtr = (Interp *) interp; + int overflow, limit = 150; + Var *varPtr, *arrayPtr; + if (iPtr->flags & ERR_ALREADY_LOGGED) { + /* + * Someone else has already logged error information for this command; + * we shouldn't add anything more. + */ + + return; + } + + /* + * Compute the line number where the error occurred. + */ + + iPtr->errorLine = 1; + for (p = script; p != command; p++) { + if (*p == '\n') { + iPtr->errorLine++; + } + } + + if (length < 0) { + length = strlen(command); + } + overflow = (length > limit); + Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( + "\n %s\n\"%.*s%s\"", ((iPtr->errorInfo == NULL) + ? "while executing" : "invoked from within"), + (overflow ? limit : length), command, (overflow ? "..." : ""))); + + varPtr = TclObjLookupVarEx(interp, iPtr->eiVar, NULL, TCL_GLOBAL_ONLY, + NULL, 0, 0, &arrayPtr); + if ((varPtr == NULL) || !TclIsVarTraced(varPtr)) { + /* + * Should not happen. + */ + + return; + } else { + Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&iPtr->varTraces, + (char *) varPtr); + VarTrace *tracePtr = Tcl_GetHashValue(hPtr); + + if (tracePtr->traceProc != EstablishErrorInfoTraces) { + /* + * The most recent trace set on ::errorInfo is not the one the + * core itself puts on last. This means some other code is tracing + * the variable, and the additional trace(s) might be write traces + * that expect the timing of writes to ::errorInfo that existed + * Tcl releases before 8.5. To satisfy that compatibility need, we + * write the current -errorinfo value to the ::errorInfo variable. + */ + + Tcl_ObjSetVar2(interp, iPtr->eiVar, NULL, iPtr->errorInfo, + TCL_GLOBAL_ONLY); + } + } +} /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 - * tab-width: 8 * End: */ |