diff options
Diffstat (limited to 'generic/tclNamesp.c')
| -rw-r--r-- | generic/tclNamesp.c | 3304 |
1 files changed, 686 insertions, 2618 deletions
diff --git a/generic/tclNamesp.c b/generic/tclNamesp.c index 5dbffc6..73bc644 100644 --- a/generic/tclNamesp.c +++ b/generic/tclNamesp.c @@ -5,8 +5,7 @@ * 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. Also includes the - * TIP#112 ensemble machinery. + * special-purpose commands and variables for packages. * * Copyright (c) 1993-1997 Lucent Technologies. * Copyright (c) 1997 Sun Microsystems, Inc. @@ -25,6 +24,7 @@ */ #include "tclInt.h" +#include "tclCompile.h" /* for NRCommand; and 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 @@ -67,82 +67,6 @@ 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: */ @@ -167,6 +91,8 @@ 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, @@ -175,10 +101,10 @@ 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, @@ -190,6 +116,8 @@ 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, @@ -203,25 +131,14 @@ 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 @@ -229,7 +146,7 @@ static void UnlinkNsPath(Namespace *nsPtr); * the object. */ -static Tcl_ObjType nsNameType = { +static const Tcl_ObjType nsNameType = { "nsName", /* the type's name */ FreeNsNameInternalRep, /* freeIntRepProc */ DupNsNameInternalRep, /* dupIntRepProc */ @@ -238,18 +155,31 @@ static Tcl_ObjType nsNameType = { }; /* - * 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. + * Array of values describing how to implement each standard subcommand of the + * "namespace" command. */ -Tcl_ObjType tclEnsembleCmdType = { - "ensembleCommand", /* the type's name */ - FreeEnsembleCmdRep, /* freeIntRepProc */ - DupEnsembleCmdRep, /* dupIntRepProc */ - StringOfEnsembleCmdRep, /* updateStringProc */ - NULL /* setFromAnyProc */ +static const EnsembleImplMap defaultNamespaceMap[] = { + {"children", NamespaceChildrenCmd, NULL, NULL, NULL, 0}, + {"code", NamespaceCodeCmd, NULL, NULL, NULL, 0}, + {"current", NamespaceCurrentCmd, NULL, NULL, NULL, 0}, + {"delete", NamespaceDeleteCmd, NULL, NULL, NULL, 0}, + {"ensemble", TclNamespaceEnsembleCmd, NULL, NULL, NULL, 0}, + {"eval", NamespaceEvalCmd, NULL, NRNamespaceEvalCmd, NULL, 0}, + {"exists", NamespaceExistsCmd, NULL, NULL, NULL, 0}, + {"export", NamespaceExportCmd, NULL, NULL, NULL, 0}, + {"forget", NamespaceForgetCmd, NULL, NULL, NULL, 0}, + {"import", NamespaceImportCmd, NULL, NULL, NULL, 0}, + {"inscope", NamespaceInscopeCmd, NULL, NRNamespaceInscopeCmd, NULL, 0}, + {"origin", NamespaceOriginCmd, NULL, NULL, NULL, 0}, + {"parent", NamespaceParentCmd, NULL, NULL, NULL, 0}, + {"path", NamespacePathCmd, NULL, NULL, NULL, 0}, + {"qualifiers", NamespaceQualifiersCmd, NULL, NULL, NULL, 0}, + {"tail", NamespaceTailCmd, NULL, NULL, NULL, 0}, + {"unknown", NamespaceUnknownCmd, NULL, NULL, NULL, 0}, + {"upvar", NamespaceUpvarCmd, TclCompileNamespaceUpvarCmd, NULL, NULL, 0}, + {"which", NamespaceWhichCmd, NULL, NULL, NULL, 0}, + {NULL, NULL, NULL, NULL, NULL, 0} }; /* @@ -412,7 +342,8 @@ 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. @@ -420,6 +351,7 @@ Tcl_PushCallFrame( iPtr->framePtr = framePtr; iPtr->varFramePtr = framePtr; + return TCL_OK; } @@ -465,7 +397,7 @@ Tcl_PopCallFrame( if (framePtr->varTablePtr != NULL) { TclDeleteVars(iPtr, framePtr->varTablePtr); - ckfree((char *) framePtr->varTablePtr); + ckfree(framePtr->varTablePtr); framePtr->varTablePtr = NULL; } if (framePtr->numCompiledLocals > 0) { @@ -489,6 +421,10 @@ Tcl_PopCallFrame( Tcl_DeleteNamespace((Tcl_Namespace *) nsPtr); } framePtr->nsPtr = NULL; + + if (framePtr->tailcallPtr) { + TclSpliceTailcall(interp, framePtr->tailcallPtr); + } } /* @@ -529,7 +465,7 @@ TclPushStackFrame( * treated as references to namespace * variables. */ { - *framePtrPtr = (Tcl_CallFrame *) TclStackAlloc(interp, sizeof(CallFrame)); + *framePtrPtr = TclStackAlloc(interp, sizeof(CallFrame)); return Tcl_PushCallFrame(interp, *framePtrPtr, namespacePtr, isProcCallFrame); } @@ -538,7 +474,7 @@ 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); @@ -601,7 +537,7 @@ 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; @@ -754,6 +690,8 @@ Tcl_CreateNamespace( Tcl_ResetResult(interp); Tcl_AppendResult(interp, "can't create namespace \"\": " "only global namespace can have empty name", NULL); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "NAMESPACE", + "CREATEGLOBAL", NULL); return NULL; } else { /* @@ -779,9 +717,18 @@ Tcl_CreateNamespace( * already exist in the parent namespace. */ - if (Tcl_FindHashEntry(&parentPtr->childTable, simpleName) != NULL) { + if ( +#ifndef BREAK_NAMESPACE_COMPAT + Tcl_FindHashEntry(&parentPtr->childTable, simpleName) != NULL +#else + parentPtr->childTablePtr != NULL && + Tcl_FindHashEntry(parentPtr->childTablePtr, simpleName) != NULL +#endif + ) { Tcl_AppendResult(interp, "can't create namespace \"", name, "\": already exists", NULL); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "NAMESPACE", + "CREATEEXISTING", NULL); return NULL; } } @@ -791,14 +738,19 @@ Tcl_CreateNamespace( * of namespaces created. */ - nsPtr = (Namespace *) ckalloc(sizeof(Namespace)); - nsPtr->name = ckalloc((unsigned) (strlen(simpleName)+1)); - strcpy(nsPtr->name, simpleName); + nsPtr = ckalloc(sizeof(Namespace)); + nameLen = strlen(simpleName) + 1; + nsPtr->name = ckalloc(nameLen); + memcpy(nsPtr->name, simpleName, nameLen); 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; @@ -820,10 +772,12 @@ Tcl_CreateNamespace( nsPtr->commandPathLength = 0; nsPtr->commandPathArray = NULL; nsPtr->commandPathSourceList = NULL; + nsPtr->earlyDeleteProc = NULL; if (parentPtr != NULL) { - entryPtr = Tcl_CreateHashEntry(&parentPtr->childTable, simpleName, - &newEntry); + entryPtr = Tcl_CreateHashEntry( + TclGetNamespaceChildTable((Tcl_Namespace *) parentPtr), + simpleName, &newEntry); Tcl_SetHashValue(entryPtr, nsPtr); } else { /* @@ -875,13 +829,23 @@ Tcl_CreateNamespace( name = Tcl_DStringValue(namePtr); nameLen = Tcl_DStringLength(namePtr); - nsPtr->fullName = ckalloc((unsigned) (nameLen+1)); + nsPtr->fullName = ckalloc(nameLen + 1); memcpy(nsPtr->fullName, name, (unsigned) nameLen + 1); Tcl_DStringFree(&buffer1); Tcl_DStringFree(&buffer2); /* + * 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. */ @@ -916,6 +880,50 @@ 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 == NRInterpCoroutine) { + 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. @@ -966,8 +974,9 @@ Tcl_DeleteNamespace( if (nsPtr->activationCount - (nsPtr == globalNsPtr) > 0) { nsPtr->flags |= NS_DYING; if (nsPtr->parentPtr != NULL) { - entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable, - nsPtr->name); + entryPtr = Tcl_FindHashEntry( + TclGetNamespaceChildTable((Tcl_Namespace *) + nsPtr->parentPtr), nsPtr->name); if (entryPtr != NULL) { Tcl_DeleteHashEntry(entryPtr); } @@ -996,7 +1005,14 @@ 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); /* @@ -1092,8 +1108,9 @@ TclTeardownNamespace( */ if (nsPtr->parentPtr != NULL) { - entryPtr = Tcl_FindHashEntry(&nsPtr->parentPtr->childTable, - nsPtr->name); + entryPtr = Tcl_FindHashEntry( + TclGetNamespaceChildTable((Tcl_Namespace *) + nsPtr->parentPtr), nsPtr->name); if (entryPtr != NULL) { Tcl_DeleteHashEntry(entryPtr); } @@ -1110,6 +1127,7 @@ TclTeardownNamespace( } if (nsPtr->commandPathSourceList != NULL) { NamespacePathEntry *nsPathPtr = nsPtr->commandPathSourceList; + do { if (nsPathPtr->nsPtr != NULL && nsPathPtr->creatorNsPtr != NULL) { nsPathPtr->creatorNsPtr->cmdRefEpoch++; @@ -1130,12 +1148,23 @@ 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. @@ -1145,7 +1174,7 @@ TclTeardownNamespace( for (i = 0; i < nsPtr->numExportPatterns; i++) { ckfree(nsPtr->exportArrayPtr[i]); } - ckfree((char *) nsPtr->exportArrayPtr); + ckfree(nsPtr->exportArrayPtr); nsPtr->exportArrayPtr = NULL; nsPtr->numExportPatterns = 0; nsPtr->maxExportPatterns = 0; @@ -1156,7 +1185,7 @@ TclTeardownNamespace( */ if (nsPtr->deleteProc != NULL) { - (*nsPtr->deleteProc)(nsPtr->clientData); + nsPtr->deleteProc(nsPtr->clientData); } nsPtr->deleteProc = NULL; nsPtr->clientData = NULL; @@ -1199,8 +1228,34 @@ 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. + * + *---------------------------------------------------------------------- + */ - ckfree((char *) nsPtr); +void +TclNsDecrRefCount( + Namespace *nsPtr) +{ + nsPtr->refCount--; + if ((nsPtr->refCount == 0) && (nsPtr->flags & NS_DEAD)) { + NamespaceFree(nsPtr); + } } /* @@ -1265,7 +1320,7 @@ Tcl_Export( for (i = 0; i < nsPtr->numExportPatterns; i++) { ckfree(nsPtr->exportArrayPtr[i]); } - ckfree((char *) nsPtr->exportArrayPtr); + ckfree(nsPtr->exportArrayPtr); nsPtr->exportArrayPtr = NULL; TclInvalidateNsCmdLookup(nsPtr); nsPtr->numExportPatterns = 0; @@ -1284,6 +1339,7 @@ Tcl_Export( if ((exportNsPtr != nsPtr) || (strcmp(pattern, simplePattern) != 0)) { Tcl_AppendResult(interp, "invalid export pattern \"", pattern, "\": pattern can't specify a namespace", NULL); + Tcl_SetErrorCode(interp, "TCL", "EXPORT", "INVALID", NULL); return TCL_ERROR; } @@ -1312,8 +1368,7 @@ Tcl_Export( if (neededElems > nsPtr->maxExportPatterns) { nsPtr->maxExportPatterns = nsPtr->maxExportPatterns ? 2 * nsPtr->maxExportPatterns : INIT_EXPORT_PATTERNS; - nsPtr->exportArrayPtr = (char **) - ckrealloc((char *) nsPtr->exportArrayPtr, + nsPtr->exportArrayPtr = ckrealloc(nsPtr->exportArrayPtr, sizeof(char *) * nsPtr->maxExportPatterns); } @@ -1322,7 +1377,7 @@ Tcl_Export( */ len = strlen(pattern); - patternCpy = ckalloc((unsigned) (len + 1)); + patternCpy = ckalloc(len + 1); memcpy(patternCpy, pattern, (unsigned) len + 1); nsPtr->exportArrayPtr[nsPtr->numExportPatterns] = patternCpy; @@ -1488,7 +1543,8 @@ Tcl_Import( */ if (strlen(pattern) == 0) { - Tcl_SetObjResult(interp, Tcl_NewStringObj("empty import pattern", -1)); + Tcl_SetObjResult(interp, Tcl_NewStringObj("empty import pattern",-1)); + Tcl_SetErrorCode(interp, "TCL", "IMPORT", "EMPTY", NULL); return TCL_ERROR; } TclGetNamespaceForQualName(interp, pattern, nsPtr, @@ -1506,10 +1562,12 @@ Tcl_Import( Tcl_AppendResult(interp, "no namespace specified in import pattern \"", pattern, "\"", NULL); + Tcl_SetErrorCode(interp, "TCL", "IMPORT", "ORIGIN", NULL); } else { Tcl_AppendResult(interp, "import pattern \"", pattern, "\" tries to import from namespace \"", importNsPtr->name, "\" into itself", NULL); + Tcl_SetErrorCode(interp, "TCL", "IMPORT", "SELF", NULL); } return TCL_ERROR; } @@ -1532,6 +1590,7 @@ 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) { @@ -1579,7 +1638,8 @@ 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; @@ -1619,25 +1679,26 @@ DoImport( cmdPtr = Tcl_GetHashValue(hPtr); if (found != NULL && cmdPtr->deleteProc == DeleteImportedCmd) { Command *overwrite = Tcl_GetHashValue(found); - Command *link = cmdPtr; - - while (link->deleteProc == DeleteImportedCmd) { - ImportedCmdData *dataPtr = link->objClientData; + Command *linkCmd = cmdPtr; - link = dataPtr->realCmdPtr; - if (overwrite == link) { + while (linkCmd->deleteProc == DeleteImportedCmd) { + dataPtr = linkCmd->objClientData; + linkCmd = dataPtr->realCmdPtr; + if (overwrite == linkCmd) { 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 = (ImportedCmdData *) ckalloc(sizeof(ImportedCmdData)); - importedCmd = Tcl_CreateObjCommand(interp, Tcl_DStringValue(&ds), - InvokeImportedCmd, dataPtr, DeleteImportedCmd); + dataPtr = ckalloc(sizeof(ImportedCmdData)); + importedCmd = Tcl_NRCreateCommand(interp, Tcl_DStringValue(&ds), + InvokeImportedCmd, InvokeImportedNRCmd, dataPtr, + DeleteImportedCmd); dataPtr->realCmdPtr = cmdPtr; dataPtr->selfPtr = (Command *) importedCmd; dataPtr->selfPtr->compileProc = cmdPtr->compileProc; @@ -1648,7 +1709,7 @@ DoImport( * and add it to the import ref list in the "real" command. */ - refPtr = (ImportRef *) ckalloc(sizeof(ImportRef)); + refPtr = ckalloc(sizeof(ImportRef)); refPtr->importedCmdPtr = (Command *) importedCmd; refPtr->nextPtr = cmdPtr->importRefPtr; cmdPtr->importRefPtr = refPtr; @@ -1668,6 +1729,7 @@ DoImport( } Tcl_AppendResult(interp, "can't import command \"", cmdName, "\": already exists", NULL); + Tcl_SetErrorCode(interp, "TCL", "IMPORT", "OVERWRITE", NULL); return TCL_ERROR; } return TCL_OK; @@ -1748,13 +1810,13 @@ Tcl_ForgetImport( */ if (TclMatchIsTrivial(simplePattern)) { - Command *cmdPtr; - hPtr = Tcl_FindHashEntry(&nsPtr->cmdTable, simplePattern); - if ((hPtr != NULL) - && (cmdPtr = Tcl_GetHashValue(hPtr)) - && (cmdPtr->deleteProc == DeleteImportedCmd)) { - Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); + if (hPtr != NULL) { + Command *cmdPtr = Tcl_GetHashValue(hPtr); + + if (cmdPtr && (cmdPtr->deleteProc == DeleteImportedCmd)) { + Tcl_DeleteCommandFromToken(interp, (Tcl_Command) cmdPtr); + } } return TCL_OK; } @@ -1805,7 +1867,7 @@ Tcl_ForgetImport( } origin = firstToken; } - if (Tcl_StringMatch(Tcl_GetCommandName(NULL, origin), simplePattern)) { + if (Tcl_StringMatch(Tcl_GetCommandName(NULL, origin), simplePattern)){ Tcl_DeleteCommandFromToken(interp, token); } } @@ -1874,17 +1936,29 @@ TclGetOriginalCommand( */ static int -InvokeImportedCmd( +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. */ { - register ImportedCmdData *dataPtr = clientData; - register Command *realCmdPtr = dataPtr->realCmdPtr; + ImportedCmdData *dataPtr = clientData; + Command *realCmdPtr = dataPtr->realCmdPtr; - return (*realCmdPtr->objProc)(realCmdPtr->objClientData, interp, + ((Interp *) interp)->evalFlags |= TCL_EVAL_REDIRECT; + return Tcl_NRCmdSwap(interp, (Tcl_Command) realCmdPtr, objc, objv, 0); +} + +static int +InvokeImportedCmd( + 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. */ +{ + return Tcl_NRCallObjProc(interp, InvokeImportedNRCmd, clientData, objc, objv); } @@ -1933,8 +2007,8 @@ DeleteImportedCmd( } else { prevPtr->nextPtr = refPtr->nextPtr; } - ckfree((char *) refPtr); - ckfree((char *) dataPtr); + ckfree(refPtr); + ckfree(dataPtr); return; } prevPtr = refPtr; @@ -2180,7 +2254,15 @@ 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) { @@ -2189,8 +2271,8 @@ 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) { @@ -2207,7 +2289,15 @@ 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 { @@ -2310,7 +2400,9 @@ Tcl_FindNamespace( if (nsPtr != NULL) { return (Tcl_Namespace *) nsPtr; - } else if (flags & TCL_LEAVE_ERR_MSG) { + } + + if (flags & TCL_LEAVE_ERR_MSG) { Tcl_ResetResult(interp); Tcl_AppendResult(interp, "unknown namespace \"", name, "\"", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "NAMESPACE", name, NULL); @@ -2387,7 +2479,7 @@ 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; @@ -2395,7 +2487,7 @@ 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; @@ -2550,8 +2642,8 @@ TclResetShadowedCmdRefs( int found, i; int trailFront = -1; int trailSize = 5; /* Formerly NUM_TRAIL_ELEMS. */ - Namespace **trailPtr = (Namespace **) - TclStackAlloc(interp, trailSize * sizeof(Namespace *)); + Namespace **trailPtr = TclStackAlloc(interp, + trailSize * sizeof(Namespace *)); /* * Start at the namespace containing the new command, and work up through @@ -2587,8 +2679,17 @@ 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 { @@ -2616,7 +2717,7 @@ TclResetShadowedCmdRefs( * for a fresh compilation of every bytecode. */ - if (((Command *)Tcl_GetHashValue(hPtr))->compileProc != NULL) { + if (((Command *)Tcl_GetHashValue(hPtr))->compileProc != NULL){ nsPtr->resolverEpoch++; } } @@ -2630,8 +2731,9 @@ TclResetShadowedCmdRefs( trailFront++; if (trailFront == trailSize) { int newSize = 2 * trailSize; - trailPtr = (Namespace **) TclStackRealloc(interp, - trailPtr, newSize * sizeof(Namespace *)); + + trailPtr = TclStackRealloc(interp, trailPtr, + newSize * sizeof(Namespace *)); trailSize = newSize; } trailPtr[trailFront] = nsPtr; @@ -2679,7 +2781,7 @@ TclGetNamespaceFromObj( * Get the current namespace name. */ - NamespaceCurrentCmd(NULL, interp, 2, NULL); + NamespaceCurrentCmd(NULL, interp, 1, NULL); Tcl_SetObjResult(interp, Tcl_ObjPrintf( "namespace \"%s\" not found in \"%s\"", name, Tcl_GetStringResult(interp))); @@ -2702,22 +2804,22 @@ 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 = (ResolvedNsName *) objPtr->internalRep.twoPtrValue.ptr1; + resNamePtr = 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 = (ResolvedNsName *) objPtr->internalRep.twoPtrValue.ptr1; + resNamePtr = objPtr->internalRep.twoPtrValue.ptr1; *nsPtrPtr = (Tcl_Namespace *) resNamePtr->nsPtr; return TCL_OK; } @@ -2727,139 +2829,25 @@ GetNamespaceFromObj( /* *---------------------------------------------------------------------- * - * Tcl_NamespaceObjCmd -- + * TclInitNamespaceCmd -- * - * 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 + * This function is called to create the "namespace" Tcl command. See the + * user documentation for details on what it does. * * Results: - * Returns TCL_OK if the command is successful. Returns TCL_ERROR if - * anything goes wrong. + * Handle for the namespace command, or NULL on failure. * * Side effects: - * 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. + * none * *---------------------------------------------------------------------- */ -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. */ +Tcl_Command +TclInitNamespaceCmd( + Tcl_Interp *interp) /* Current interpreter. */ { - 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; + return TclMakeEnsemble(interp, "namespace", defaultNamespaceMap); } /* @@ -2893,7 +2881,7 @@ NamespaceChildrenCmd( Tcl_Namespace *namespacePtr; Namespace *nsPtr, *childNsPtr; Namespace *globalNsPtr = (Namespace *) TclGetGlobalNamespace(interp); - char *pattern = NULL; + const char *pattern = NULL; Tcl_DString buffer; register Tcl_HashEntry *entryPtr; Tcl_HashSearch search; @@ -2903,15 +2891,15 @@ NamespaceChildrenCmd( * Get a pointer to the specified namespace, or the current namespace. */ - if (objc == 2) { + if (objc == 1) { nsPtr = (Namespace *) TclGetCurrentNamespace(interp); - } else if ((objc == 3) || (objc == 4)) { - if (TclGetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) { + } else if ((objc == 2) || (objc == 3)) { + if (TclGetNamespaceFromObj(interp, objv[1], &namespacePtr) != TCL_OK){ return TCL_ERROR; } nsPtr = (Namespace *) namespacePtr; } else { - Tcl_WrongNumArgs(interp, 2, objv, "?name? ?pattern?"); + Tcl_WrongNumArgs(interp, 1, objv, "?name? ?pattern?"); return TCL_ERROR; } @@ -2920,8 +2908,8 @@ NamespaceChildrenCmd( */ Tcl_DStringInit(&buffer); - if (objc == 4) { - char *name = TclGetString(objv[3]); + if (objc == 3) { + const char *name = TclGetString(objv[2]); if ((*name == ':') && (*(name+1) == ':')) { pattern = name; @@ -2947,13 +2935,27 @@ NamespaceChildrenCmd( if (strncmp(pattern, nsPtr->fullName, length) != 0) { goto searchDone; } - if (Tcl_FindHashEntry(&nsPtr->childTable, pattern+length) != NULL) { + if ( +#ifndef BREAK_NAMESPACE_COMPAT + Tcl_FindHashEntry(&nsPtr->childTable, pattern+length) != NULL +#else + nsPtr->childTablePtr != NULL && + Tcl_FindHashEntry(nsPtr->childTablePtr, pattern+length) != NULL +#endif + ) { 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) @@ -3007,11 +3009,11 @@ NamespaceCodeCmd( { Namespace *currNsPtr; Tcl_Obj *listPtr, *objPtr; - register char *arg; + register const char *arg; int length; - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "arg"); + if (objc != 2) { + Tcl_WrongNumArgs(interp, 1, objv, "arg"); return TCL_ERROR; } @@ -3023,10 +3025,10 @@ NamespaceCodeCmd( " "namespace" command. [Bug 3202171]. */ - arg = TclGetStringFromObj(objv[2], &length); + arg = TclGetStringFromObj(objv[1], &length); if (*arg==':' && length > 20 && strncmp(arg, "::namespace inscope ", 20) == 0) { - Tcl_SetObjResult(interp, objv[2]); + Tcl_SetObjResult(interp, objv[1]); return TCL_OK; } @@ -3052,7 +3054,7 @@ NamespaceCodeCmd( } Tcl_ListObjAppendElement(interp, listPtr, objPtr); - Tcl_ListObjAppendElement(interp, listPtr, objv[2]); + Tcl_ListObjAppendElement(interp, listPtr, objv[1]); Tcl_SetObjResult(interp, listPtr); return TCL_OK; @@ -3088,8 +3090,8 @@ NamespaceCurrentCmd( { register Namespace *currNsPtr; - if (objc != 2) { - Tcl_WrongNumArgs(interp, 2, objv, NULL); + if (objc != 1) { + Tcl_WrongNumArgs(interp, 1, objv, NULL); return TCL_ERROR; } @@ -3150,11 +3152,11 @@ NamespaceDeleteCmd( Tcl_Obj *const objv[]) /* Argument objects. */ { Tcl_Namespace *namespacePtr; - char *name; + const char *name; register int i; - if (objc < 2) { - Tcl_WrongNumArgs(interp, 2, objv, "?name name...?"); + if (objc < 1) { + Tcl_WrongNumArgs(interp, 1, objv, "?name name...?"); return TCL_ERROR; } @@ -3164,11 +3166,11 @@ NamespaceDeleteCmd( * command line are valid, and report any errors. */ - for (i = 2; i < objc; i++) { + for (i = 1; i < objc; i++) { name = TclGetString(objv[i]); namespacePtr = Tcl_FindNamespace(interp, name, NULL, /*flags*/ 0); if ((namespacePtr == NULL) - || (((Namespace *)namespacePtr)->flags & NS_KILLED)) { + || (((Namespace *) namespacePtr)->flags & NS_KILLED)) { Tcl_AppendResult(interp, "unknown namespace \"", TclGetString(objv[i]), "\" in namespace delete command", NULL); @@ -3182,7 +3184,7 @@ NamespaceDeleteCmd( * Okay, now delete each namespace. */ - for (i = 2; i < objc; i++) { + for (i = 1; i < objc; i++) { name = TclGetString(objv[i]); namespacePtr = Tcl_FindNamespace(interp, name, NULL, /* flags */ 0); if (namespacePtr) { @@ -3221,18 +3223,32 @@ 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 < 4) { - Tcl_WrongNumArgs(interp, 2, objv, "name arg ?arg...?"); + if (objc < 3) { + Tcl_WrongNumArgs(interp, 1, objv, "name arg ?arg...?"); return TCL_ERROR; } @@ -3241,14 +3257,14 @@ NamespaceEvalCmd( * namespace object along the way. */ - result = GetNamespaceFromObj(interp, objv[2], &namespacePtr); + result = GetNamespaceFromObj(interp, objv[1], &namespacePtr); /* * If the namespace wasn't found, try to create it. */ if (result == TCL_ERROR) { - char *name = TclGetString(objv[2]); + const char *name = TclGetString(objv[1]); namespacePtr = Tcl_CreateNamespace(interp, name, NULL, NULL); if (namespacePtr == NULL) { @@ -3269,20 +3285,24 @@ NamespaceEvalCmd( return TCL_ERROR; } - framePtr->objc = objc; - framePtr->objv = objv; + 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; + } - if (objc == 4) { + if (objc == 3) { /* * TIP #280: Make actual argument location available to eval'd script. */ - 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); + objPtr = objv[2]; + invoker = iPtr->cmdFramePtr; + word = 3; + TclArgumentGet(interp, objPtr, &invoker, &word); } else { /* * More than one argument: concatenate them together with spaces @@ -3290,24 +3310,39 @@ NamespaceEvalCmd( * object when it decrements its refcount after eval'ing it. */ - objPtr = Tcl_ConcatObj(objc-3, objv+3); + objPtr = Tcl_ConcatObj(objc-2, objv+2); + invoker = NULL; + word = 0; + } - /* - * TIP #280: Make invoking context available to eval'd script. - */ + /* + * TIP #280: Make invoking context available to eval'd script. + */ - result = TclEvalObjEx(interp, objPtr, TCL_EVAL_DIRECT, NULL, 0); - } + TclNRAddCallback(interp, NsEval_Callback, namespacePtr, "eval", + NULL, NULL); + return TclNREvalObjEx(interp, objPtr, 0, invoker, word); +} + +static int +NsEval_Callback( + ClientData data[], + Tcl_Interp *interp, + int result) +{ + Tcl_Namespace *namespacePtr = data[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 eval \"%.*s%s\" script line %d)", + "\n (in namespace %s \"%.*s%s\" script line %d)", + cmd, (overflow ? limit : length), namespacePtr->fullName, - (overflow ? "..." : ""), interp->errorLine)); + (overflow ? "..." : ""), Tcl_GetErrorLine(interp))); } /* @@ -3348,13 +3383,13 @@ NamespaceExistsCmd( { Tcl_Namespace *namespacePtr; - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "name"); + if (objc != 2) { + Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_NewBooleanObj( - GetNamespaceFromObj(interp, objv[2], &namespacePtr) == TCL_OK)); + GetNamespaceFromObj(interp, objv[1], &namespacePtr) == TCL_OK)); return TCL_OK; } @@ -3402,12 +3437,12 @@ NamespaceExportCmd( Tcl_Obj *const objv[]) /* Argument objects. */ { Namespace *currNsPtr = (Namespace *) TclGetCurrentNamespace(interp); - char *pattern, *string; + const char *pattern, *string; int resetListFirst = 0; int firstArg, patternCt, i, result; - if (objc < 2) { - Tcl_WrongNumArgs(interp, 2, objv, "?-clear? ?pattern pattern...?"); + if (objc < 1) { + Tcl_WrongNumArgs(interp, 1, objv, "?-clear? ?pattern pattern...?"); return TCL_ERROR; } @@ -3415,7 +3450,7 @@ NamespaceExportCmd( * Process the optional "-clear" argument. */ - firstArg = 2; + firstArg = 1; if (firstArg < objc) { string = TclGetString(objv[firstArg]); if (strcmp(string, "-clear") == 0) { @@ -3429,9 +3464,9 @@ NamespaceExportCmd( * the namespace's current export pattern list. */ - patternCt = (objc - firstArg); + patternCt = objc - firstArg; if (patternCt == 0) { - if (firstArg > 2) { + if (firstArg > 1) { return TCL_OK; } else { /* @@ -3439,6 +3474,7 @@ NamespaceExportCmd( */ Tcl_Obj *listPtr = Tcl_NewListObj(0, NULL); + result = Tcl_AppendExportList(interp, (Tcl_Namespace *) currNsPtr, listPtr); if (result != TCL_OK) { @@ -3501,15 +3537,15 @@ NamespaceForgetCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - char *pattern; + const char *pattern; register int i, result; - if (objc < 2) { - Tcl_WrongNumArgs(interp, 2, objv, "?pattern pattern...?"); + if (objc < 1) { + Tcl_WrongNumArgs(interp, 1, objv, "?pattern pattern...?"); return TCL_ERROR; } - for (i = 2; i < objc; i++) { + for (i = 1; i < objc; i++) { pattern = TclGetString(objv[i]); result = Tcl_ForgetImport(interp, NULL, pattern); if (result != TCL_OK) { @@ -3567,12 +3603,12 @@ NamespaceImportCmd( Tcl_Obj *const objv[]) /* Argument objects. */ { int allowOverwrite = 0; - char *string, *pattern; + const char *string, *pattern; register int i, result; int firstArg; - if (objc < 2) { - Tcl_WrongNumArgs(interp, 2, objv, "?-force? ?pattern pattern...?"); + if (objc < 1) { + Tcl_WrongNumArgs(interp, 1, objv, "?-force? ?pattern pattern...?"); return TCL_ERROR; } @@ -3580,7 +3616,7 @@ NamespaceImportCmd( * Skip over the optional "-force" as the first argument. */ - firstArg = 2; + firstArg = 1; if (firstArg < objc) { string = TclGetString(objv[firstArg]); if ((*string == '-') && (strcmp(string, "-force") == 0)) { @@ -3589,7 +3625,7 @@ NamespaceImportCmd( } } else { /* - * When objc == 2, command is just [namespace import]. Introspection + * When objc == 1, command is just [namespace import]. Introspection * form to return list of imported commands. */ @@ -3665,6 +3701,17 @@ 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. */ @@ -3672,10 +3719,12 @@ NamespaceInscopeCmd( { Tcl_Namespace *namespacePtr; CallFrame *framePtr, **framePtrPtr; + register Interp *iPtr = (Interp *) interp; int i, result; + Tcl_Obj *cmdObjPtr; - if (objc < 4) { - Tcl_WrongNumArgs(interp, 2, objv, "name arg ?arg...?"); + if (objc < 3) { + Tcl_WrongNumArgs(interp, 1, objv, "name arg ?arg...?"); return TCL_ERROR; } @@ -3683,7 +3732,7 @@ NamespaceInscopeCmd( * Resolve the namespace reference. */ - if (TclGetNamespaceFromObj(interp, objv[2], &namespacePtr) != TCL_OK) { + if (TclGetNamespaceFromObj(interp, objv[1], &namespacePtr) != TCL_OK) { return TCL_ERROR; } @@ -3699,8 +3748,14 @@ NamespaceInscopeCmd( return result; } - framePtr->objc = objc; - framePtr->objv = objv; + 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; + } /* * Execute the command. If there is just one argument, just treat it as a @@ -3709,44 +3764,29 @@ NamespaceInscopeCmd( * of extra arguments to form the command to evaluate. */ - if (objc == 4) { - result = Tcl_EvalObjEx(interp, objv[3], 0); + if (objc == 3) { + cmdObjPtr = objv[2]; } else { Tcl_Obj *concatObjv[2]; - register Tcl_Obj *listPtr, *cmdObjPtr; + register Tcl_Obj *listPtr; listPtr = Tcl_NewListObj(0, NULL); - for (i = 4; i < objc; i++) { - if (Tcl_ListObjAppendElement(interp, listPtr, objv[i]) != TCL_OK) { + for (i = 3; i < objc; i++) { + if (Tcl_ListObjAppendElement(interp, listPtr, objv[i]) != TCL_OK){ Tcl_DecrRefCount(listPtr); /* Free unneeded obj. */ return TCL_ERROR; } } - concatObjv[0] = objv[3]; + concatObjv[0] = objv[2]; 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. */ } - 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; + TclNRAddCallback(interp, NsEval_Callback, namespacePtr, "inscope", + NULL, NULL); + return TclNREvalObjEx(interp, cmdObjPtr, 0, NULL, 0); } /* @@ -3788,17 +3828,17 @@ NamespaceOriginCmd( Tcl_Command command, origCommand; Tcl_Obj *resultPtr; - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "name"); + if (objc != 2) { + Tcl_WrongNumArgs(interp, 1, objv, "name"); return TCL_ERROR; } - command = Tcl_GetCommandFromObj(interp, objv[2]); + command = Tcl_GetCommandFromObj(interp, objv[1]); if (command == NULL) { Tcl_AppendResult(interp, "invalid command name \"", - TclGetString(objv[2]), "\"", NULL); + TclGetString(objv[1]), "\"", NULL); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COMMAND", - TclGetString(objv[2]), NULL); + TclGetString(objv[1]), NULL); return TCL_ERROR; } origCommand = TclGetOriginalCommand(command); @@ -3848,14 +3888,14 @@ NamespaceParentCmd( { Tcl_Namespace *nsPtr; - if (objc == 2) { + if (objc == 1) { nsPtr = TclGetCurrentNamespace(interp); - } else if (objc == 3) { - if (TclGetNamespaceFromObj(interp, objv[2], &nsPtr) != TCL_OK) { + } else if (objc == 2) { + if (TclGetNamespaceFromObj(interp, objv[1], &nsPtr) != TCL_OK) { return TCL_ERROR; } } else { - Tcl_WrongNumArgs(interp, 2, objv, "?name?"); + Tcl_WrongNumArgs(interp, 1, objv, "?name?"); return TCL_ERROR; } @@ -3909,8 +3949,8 @@ NamespacePathCmd( Tcl_Obj **nsObjv; Tcl_Namespace **namespaceList = NULL; - if (objc > 3) { - Tcl_WrongNumArgs(interp, 2, objv, "?pathList?"); + if (objc > 2) { + Tcl_WrongNumArgs(interp, 1, objv, "?pathList?"); return TCL_ERROR; } @@ -3918,17 +3958,16 @@ NamespacePathCmd( * If no path is given, return the current path. */ - if (objc == 2) { - /* - * Not a very fast way to compute this, but easy to get right. - */ + if (objc == 1) { + Tcl_Obj *resultObj = Tcl_NewObj(); for (i=0 ; i<nsPtr->commandPathLength ; i++) { if (nsPtr->commandPathArray[i].nsPtr != NULL) { - Tcl_AppendElement(interp, - nsPtr->commandPathArray[i].nsPtr->fullName); + Tcl_ListObjAppendElement(NULL, resultObj, Tcl_NewStringObj( + nsPtr->commandPathArray[i].nsPtr->fullName, -1)); } } + Tcl_SetObjResult(interp, resultObj); return TCL_OK; } @@ -3936,12 +3975,12 @@ NamespacePathCmd( * There is a path given, so parse it into an array of namespace pointers. */ - if (TclListObjGetElements(interp, objv[2], &nsObjc, &nsObjv) != TCL_OK) { + if (TclListObjGetElements(interp, objv[1], &nsObjc, &nsObjv) != TCL_OK) { goto badNamespace; } if (nsObjc != 0) { - namespaceList = (Tcl_Namespace **) - TclStackAlloc(interp, sizeof(Tcl_Namespace *) * nsObjc); + namespaceList = TclStackAlloc(interp, + sizeof(Tcl_Namespace *) * nsObjc); for (i=0 ; i<nsObjc ; i++) { if (TclGetNamespaceFromObj(interp, nsObjv[i], @@ -3992,7 +4031,7 @@ TclSetNsPath( Tcl_Namespace *pathAry[]) /* Array of namespaces that are the path. */ { if (pathLength != 0) { - NamespacePathEntry *tmpPathArray = (NamespacePathEntry *) + NamespacePathEntry *tmpPathArray = ckalloc(sizeof(NamespacePathEntry) * pathLength); int i; @@ -4048,6 +4087,7 @@ UnlinkNsPath( int i; for (i=0 ; i<nsPtr->commandPathLength ; i++) { NamespacePathEntry *nsPathPtr = &nsPtr->commandPathArray[i]; + if (nsPathPtr->prevPtr != NULL) { nsPathPtr->prevPtr->nextPtr = nsPathPtr->nextPtr; } @@ -4060,7 +4100,7 @@ UnlinkNsPath( } } } - ckfree((char *) nsPtr->commandPathArray); + ckfree(nsPtr->commandPathArray); } /* @@ -4088,6 +4128,7 @@ TclInvalidateNsPath( Namespace *nsPtr) { NamespacePathEntry *nsPathPtr = nsPtr->commandPathSourceList; + while (nsPathPtr != NULL) { if (nsPathPtr->nsPtr != NULL) { nsPathPtr->creatorNsPtr->cmdRefEpoch++; @@ -4128,11 +4169,11 @@ NamespaceQualifiersCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - register char *name, *p; + register const char *name, *p; int length; - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "string"); + if (objc != 2) { + Tcl_WrongNumArgs(interp, 1, objv, "string"); return TCL_ERROR; } @@ -4141,7 +4182,7 @@ NamespaceQualifiersCmd( * the last "::" qualifier. */ - name = TclGetString(objv[2]); + name = TclGetString(objv[1]); for (p = name; *p != '\0'; p++) { /* empty body */ } @@ -4200,14 +4241,14 @@ NamespaceUnknownCmd( Tcl_Obj *resultPtr; int rc; - if (objc > 3) { - Tcl_WrongNumArgs(interp, 2, objv, "?script?"); + if (objc > 2) { + Tcl_WrongNumArgs(interp, 1, objv, "?script?"); return TCL_ERROR; } currNsPtr = TclGetCurrentNamespace(interp); - if (objc == 2) { + if (objc == 1) { /* * Introspection - return the current namespace handler. */ @@ -4218,9 +4259,9 @@ NamespaceUnknownCmd( } Tcl_SetObjResult(interp, resultPtr); } else { - rc = Tcl_SetNamespaceUnknownHandler(interp, currNsPtr, objv[2]); + rc = Tcl_SetNamespaceUnknownHandler(interp, currNsPtr, objv[1]); if (rc == TCL_OK) { - Tcl_SetObjResult(interp, objv[2]); + Tcl_SetObjResult(interp, objv[1]); } return rc; } @@ -4251,10 +4292,10 @@ 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 @@ -4295,7 +4336,7 @@ 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. @@ -4383,10 +4424,10 @@ NamespaceTailCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - register char *name, *p; + register const char *name, *p; - if (objc != 3) { - Tcl_WrongNumArgs(interp, 2, objv, "string"); + if (objc != 2) { + Tcl_WrongNumArgs(interp, 1, objv, "string"); return TCL_ERROR; } @@ -4395,7 +4436,7 @@ NamespaceTailCmd( * qualifier. */ - name = TclGetString(objv[2]); + name = TclGetString(objv[1]); for (p = name; *p != '\0'; p++) { /* empty body */ } @@ -4444,24 +4485,23 @@ NamespaceUpvarCmd( Interp *iPtr = (Interp *) interp; Tcl_Namespace *nsPtr, *savedNsPtr; Var *otherPtr, *arrayPtr; - char *myName; + const char *myName; - if (objc < 5 || !(objc & 1)) { - Tcl_WrongNumArgs(interp, 2, objv, - "ns otherVar myVar ?otherVar myVar ...?"); + if (objc < 2 || (objc & 1)) { + Tcl_WrongNumArgs(interp, 1, objv, "ns ?otherVar myVar ...?"); return TCL_ERROR; } - if (TclGetNamespaceFromObj(interp, objv[2], &nsPtr) != TCL_OK) { + if (TclGetNamespaceFromObj(interp, objv[1], &nsPtr) != TCL_OK) { return TCL_ERROR; } - objc -= 3; - objv += 3; + objc -= 2; + objv += 2; for (; objc>0 ; objc-=2, objv+=2) { /* - * Locate the other variable + * Locate the other variable. */ savedNsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr; @@ -4516,22 +4556,22 @@ NamespaceWhichCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { - static const char *opts[] = { + static const char *const opts[] = { "-command", "-variable", NULL }; int lookupType = 0; Tcl_Obj *resultPtr; - if (objc < 3 || objc > 4) { + if (objc < 2 || objc > 3) { badArgs: - Tcl_WrongNumArgs(interp, 2, objv, "?-command? ?-variable? name"); + Tcl_WrongNumArgs(interp, 1, objv, "?-command? ?-variable? name"); return TCL_ERROR; - } else if (objc == 4) { + } else if (objc == 3) { /* * Look for a flag controlling the lookup. */ - if (Tcl_GetIndexFromObj(interp, objv[2], opts, "option", 0, + if (Tcl_GetIndexFromObj(interp, objv[1], opts, "option", 0, &lookupType) != TCL_OK) { /* * Preserve old style of error message! @@ -4590,9 +4630,7 @@ FreeNsNameInternalRep( register Tcl_Obj *objPtr) /* nsName object with internal representation * to free. */ { - register ResolvedNsName *resNamePtr = (ResolvedNsName *) - objPtr->internalRep.twoPtrValue.ptr1; - Namespace *nsPtr; + ResolvedNsName *resNamePtr = objPtr->internalRep.twoPtrValue.ptr1; /* * Decrement the reference count of the namespace. If there are no more @@ -4601,19 +4639,14 @@ 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. */ - nsPtr = resNamePtr->nsPtr; - nsPtr->refCount--; - if ((nsPtr->refCount == 0) && (nsPtr->flags & NS_DEAD)) { - NamespaceFree(nsPtr); - } - ckfree((char *) resNamePtr); + TclNsDecrRefCount(resNamePtr->nsPtr); + ckfree(resNamePtr); } objPtr->typePtr = NULL; } @@ -4642,8 +4675,7 @@ DupNsNameInternalRep( Tcl_Obj *srcPtr, /* Object with internal rep to copy. */ register Tcl_Obj *copyPtr) /* Object with internal rep to set. */ { - register ResolvedNsName *resNamePtr = (ResolvedNsName *) - srcPtr->internalRep.twoPtrValue.ptr1; + ResolvedNsName *resNamePtr = srcPtr->internalRep.twoPtrValue.ptr1; copyPtr->internalRep.twoPtrValue.ptr1 = resNamePtr; resNamePtr->refCount++; @@ -4706,13 +4738,12 @@ SetNsNameFromAny( if (objPtr->typePtr == &nsNameType) { TclFreeIntRep(objPtr); - objPtr->typePtr = NULL; } return TCL_ERROR; } nsPtr->refCount++; - resNamePtr = (ResolvedNsName *) ckalloc(sizeof(ResolvedNsName)); + resNamePtr = ckalloc(sizeof(ResolvedNsName)); resNamePtr->nsPtr = nsPtr; if ((name[0] == ':') && (name[1] == ':')) { resNamePtr->refNsPtr = NULL; @@ -4729,2177 +4760,271 @@ SetNsNameFromAny( /* *---------------------------------------------------------------------- * - * NamespaceEnsembleCmd -- - * - * 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: - * Returns TCL_OK if successful, and TCL_ERROR if anything goes wrong. - * - * Side effects: - * 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. - * - *---------------------------------------------------------------------- - */ - -int -Tcl_SetEnsembleMappingDict( - Tcl_Interp *interp, - Tcl_Command token, - Tcl_Obj *mapDict) -{ - 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; -} - -/* - *---------------------------------------------------------------------- - * - * Tcl_SetEnsembleUnknownHandler -- - * - * Set the unknown handler for a particular ensemble. - * - * Results: - * 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: - * The ensemble is updated and marked for recompilation. - * - *---------------------------------------------------------------------- - */ - -int -Tcl_SetEnsembleUnknownHandler( - Tcl_Interp *interp, - Tcl_Command token, - Tcl_Obj *unknownList) -{ - 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; -} - -/* - *---------------------------------------------------------------------- - * - * Tcl_SetEnsembleFlags -- - * - * Set the flags for a particular ensemble. - * - * Results: - * Tcl result code (error if command token does not indicate an - * ensemble). - * - * Side effects: - * The ensemble is updated and marked for recompilation. - * - *---------------------------------------------------------------------- - */ - -int -Tcl_SetEnsembleFlags( - Tcl_Interp *interp, - Tcl_Command token, - int flags) -{ - Command *cmdPtr = (Command *) token; - EnsembleConfig *ensemblePtr; - int wasCompiled; - - 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) { - /* - * Reuse existing infrastructure for following import link chains - * rather than duplicating it. - */ - - 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; - } - - /* - * 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) { - /* - * 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. - */ - - if (objv[1]->typePtr == &tclEnsembleCmdType) { - EnsembleCmdRep *ensembleCmd = objv[1]->internalRep.otherValuePtr; - - 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. - */ - - 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; - } - } - if (fullName == NULL) { - /* - * The subcommand is not a prefix of anything, so bail out! - */ - - 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 { - int ni = iPtr->ensembleRewrite.numInsertedObjs; - - 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); - - /* - * 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; - } - - /* - * 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... - */ - - 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; - } - 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; - - 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 -- + * TclGetNamespaceCommandTable -- * - * 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.) + * Returns the hash table of commands. * * Results: - * None + * Pointer to the hash table. * * Side effects: - * Alters the internal representation of the first object parameter. + * None. * *---------------------------------------------------------------------- */ -static void -MakeCachedEnsembleCommand( - Tcl_Obj *objPtr, - EnsembleConfig *ensemblePtr, - const char *subcommandName, - Tcl_Obj *prefixObjPtr) +Tcl_HashTable * +TclGetNamespaceCommandTable( + Tcl_Namespace *nsPtr) { - register EnsembleCmdRep *ensembleCmd; - int length; - - if (objPtr->typePtr == &tclEnsembleCmdType) { - ensembleCmd = objPtr->internalRep.otherValuePtr; - Tcl_DecrRefCount(ensembleCmd->realPrefixObj); - ensembleCmd->nsPtr->refCount--; - if ((ensembleCmd->nsPtr->refCount == 0) - && (ensembleCmd->nsPtr->flags & NS_DEAD)) { - NamespaceFree(ensembleCmd->nsPtr); - } - ckfree(ensembleCmd->fullSubcmdName); - } else { - /* - * Kill the old internal rep, and replace it with a brand new one of - * our own. - */ - - TclFreeIntRep(objPtr); - ensembleCmd = (EnsembleCmdRep *) ckalloc(sizeof(EnsembleCmdRep)); - objPtr->internalRep.otherValuePtr = 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); + return &((Namespace *) nsPtr)->cmdTable; } /* *---------------------------------------------------------------------- * - * DeleteEnsembleConfig -- + * TclGetNamespaceChildTable -- * - * 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. + * Returns the hash table of child namespaces. * * Results: - * None. + * Pointer to the hash table. * * Side effects: - * Memory is (eventually) deallocated. + * Might allocate memory. * *---------------------------------------------------------------------- */ -static void -DeleteEnsembleConfig( - ClientData clientData) +Tcl_HashTable * +TclGetNamespaceChildTable( + Tcl_Namespace *nsPtr) { - 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. - */ - - 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; - } - } - } - - /* - * 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 (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); + 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 } /* *---------------------------------------------------------------------- * - * BuildEnsembleConfig -- + * TclLogCommandInfo -- * - * 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. + * 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. * * 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. + * Information about the command is added to errorInfo/errorStack and the + * line number stored internally in the interpreter is set. * *---------------------------------------------------------------------- */ -static void -BuildEnsembleConfig( - EnsembleConfig *ensemblePtr) +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 */ { - 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) { - /* - * Remove pre-existing table. - */ - - 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) { - /* - * 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_DictSearch dictSearch; - Tcl_Obj *keyObj, *valueObj; - int done; - - Tcl_DictObjFirst(NULL, ensemblePtr->subcommandDict, &dictSearch, - &keyObj, &valueObj, &done); - while (!done) { - char *name = TclGetString(keyObj); + register const char *p; + Interp *iPtr = (Interp *) interp; + int overflow, limit = 150; + Var *varPtr, *arrayPtr; - hPtr = Tcl_CreateHashEntry(hash, name, &isNew); - Tcl_SetHashValue(hPtr, valueObj); - Tcl_IncrRefCount(valueObj); - Tcl_DictObjNext(&dictSearch, &keyObj, &valueObj, &done); - } - } else { + if (iPtr->flags & ERR_ALREADY_LOGGED) { /* - * 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. + * Someone else has already logged error information for this command; + * we shouldn't add anything more. */ - 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); + if (command != NULL) { + /* + * 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); + } + } + } /* - * 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. + * TIP #348 */ - 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); + if (Tcl_IsShared(iPtr->errorStack)) { + Tcl_Obj *newObj; + + newObj = Tcl_DuplicateObj(iPtr->errorStack); + Tcl_DecrRefCount(iPtr->errorStack); + Tcl_IncrRefCount(newObj); + iPtr->errorStack = newObj; + } + if (iPtr->resetErrorStack) { + int len; + + iPtr->resetErrorStack = 0; + Tcl_ListObjLength(interp, iPtr->errorStack, &len); + + /* + * Reset while keeping the list intrep as much as possible. + */ + + Tcl_ListObjReplace(interp, iPtr->errorStack, 0, len, 0, NULL); + if (pc != NULL) { + Tcl_Obj *innerContext; + + innerContext = TclGetInnerContext(interp, pc, tosPtr); + if (innerContext != NULL) { + Tcl_ListObjAppendElement(NULL, iPtr->errorStack, + iPtr->innerLiteral); + Tcl_ListObjAppendElement(NULL, iPtr->errorStack, innerContext); + } + } else if (command != NULL) { + Tcl_ListObjAppendElement(NULL, iPtr->errorStack, + iPtr->innerLiteral); + Tcl_ListObjAppendElement(NULL, iPtr->errorStack, + Tcl_NewStringObj(command, length)); + } + } + + if (!iPtr->framePtr->objc) { + /* + * Special frame, nothing to report. + */ + } else if (iPtr->varFramePtr != iPtr->framePtr) { + /* + * uplevel case, [lappend errorstack UP $relativelevel] + */ + + 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) { + /* + * normal case, [lappend errorstack CALL [info level 0]] + */ + + Tcl_ListObjAppendElement(NULL, iPtr->errorStack, iPtr->callLiteral); + Tcl_ListObjAppendElement(NULL, iPtr->errorStack, Tcl_NewListObj( + iPtr->framePtr->objc, iPtr->framePtr->objv)); } } /* *---------------------------------------------------------------------- * - * NsEnsembleStringOrder -- - * - * 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 -- + * TclErrorStackResetIf -- * - * Destroys the internal representation of a Tcl_Obj that has been - * holding information about a command in an ensemble. + * The TIP 348 reset/no-bc part of TLCI, for specific use by + * TclCompileSyntaxError. * * Results: * None. * * Side effects: - * Memory is deallocated. If this held the last reference to a - * namespace's main structure, that main structure will also be - * destroyed. + * Reset errorstack if it needs be, and in that case remember the + * passed-in error message as inner context. * *---------------------------------------------------------------------- */ -static void -FreeEnsembleCmdRep( - Tcl_Obj *objPtr) -{ - EnsembleCmdRep *ensembleCmd = objPtr->internalRep.otherValuePtr; - - Tcl_DecrRefCount(ensembleCmd->realPrefixObj); - ckfree(ensembleCmd->fullSubcmdName); - ensembleCmd->nsPtr->refCount--; - if ((ensembleCmd->nsPtr->refCount == 0) - && (ensembleCmd->nsPtr->flags & NS_DEAD)) { - NamespaceFree(ensembleCmd->nsPtr); - } - 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. - * - *---------------------------------------------------------------------- - */ - -static void -DupEnsembleCmdRep( - Tcl_Obj *objPtr, - Tcl_Obj *copyPtr) -{ - EnsembleCmdRep *ensembleCmd = objPtr->internalRep.otherValuePtr; - EnsembleCmdRep *ensembleCopy = (EnsembleCmdRep *) - ckalloc(sizeof(EnsembleCmdRep)); - int length = strlen(ensembleCmd->fullSubcmdName); - - copyPtr->typePtr = &tclEnsembleCmdType; - copyPtr->internalRep.otherValuePtr = 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. - * - *---------------------------------------------------------------------- - */ - -static void -StringOfEnsembleCmdRep( - Tcl_Obj *objPtr) +void +TclErrorStackResetIf( + Tcl_Interp *interp, + const char *msg, + int length) { - EnsembleCmdRep *ensembleCmd = objPtr->internalRep.otherValuePtr; - int length = strlen(ensembleCmd->fullSubcmdName); + Interp *iPtr = (Interp *) interp; - objPtr->length = length; - objPtr->bytes = ckalloc((unsigned) length+1); - memcpy(objPtr->bytes, ensembleCmd->fullSubcmdName, (unsigned) length+1); + if (Tcl_IsShared(iPtr->errorStack)) { + Tcl_Obj *newObj; + + newObj = Tcl_DuplicateObj(iPtr->errorStack); + Tcl_DecrRefCount(iPtr->errorStack); + Tcl_IncrRefCount(newObj); + iPtr->errorStack = newObj; + } + if (iPtr->resetErrorStack) { + int len; + + iPtr->resetErrorStack = 0; + Tcl_ListObjLength(interp, iPtr->errorStack, &len); + + /* + * Reset while keeping the list intrep as much as possible. + */ + + 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)); + } } /* @@ -6908,15 +5033,15 @@ StringOfEnsembleCmdRep( * Tcl_LogCommandInfo -- * * This function is invoked after an error occurs in an interpreter. It - * adds information to iPtr->errorInfo field to describe the command that - * was being executed when the error occurred. + * adds information to iPtr->errorInfo/errorStack fields to describe the + * command that was being executed when the error occurred. * * Results: * None. * * Side effects: - * Information about the command is added to errorInfo and the line - * number stored internally in the interpreter is set. + * Information about the command is added to errorInfo/errorStack and the + * line number stored internally in the interpreter is set. * *---------------------------------------------------------------------- */ @@ -6931,73 +5056,16 @@ Tcl_LogCommandInfo( int length) /* Number of bytes in command (-1 means use * all bytes up to first null byte). */ { - 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); - } - } + TclLogCommandInfo(interp, script, command, length, NULL, NULL); } + /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 + * tab-width: 8 + * indent-tabs-mode: nil * End: */ |