diff options
| -rw-r--r-- | generic/tclBasic.c | 77 |
1 files changed, 40 insertions, 37 deletions
diff --git a/generic/tclBasic.c b/generic/tclBasic.c index 3f579d1..af747cd 100644 --- a/generic/tclBasic.c +++ b/generic/tclBasic.c @@ -4121,13 +4121,21 @@ EvalObjvCore( Tcl_Interp *interp, int result) { - Command *cmdPtr = data[0]; + Command *cmdPtr = NULL, *preCmdPtr = data[0]; int flags = PTR2INT(data[1]); int objc = PTR2INT(data[2]); Tcl_Obj **objv = data[3]; Interp *iPtr = (Interp *) interp; + + /* + * Capture the namespace we should do command name resolution in, as + * instructed by our caller sneaking it in to us in a private interp + * field. Clear that field right away so we cannot possibly have its + * use leak where it should not. The sneaky message pass is done. + */ + Namespace *lookupNsPtr = iPtr->lookupNsPtr; - int weLookUp = (cmdPtr == NULL); + iPtr->lookupNsPtr = NULL; if (TCL_OK != TclInterpReady(interp)) { return TCL_ERROR; @@ -4141,8 +4149,6 @@ EvalObjvCore( return TCL_ERROR; } - iPtr->lookupNsPtr = NULL; - /* * Push records for task to be done on return, in INVERSE order. First, if * needed, the exception handlers (as they should happen last). @@ -4152,45 +4158,43 @@ EvalObjvCore( TEOV_PushExceptionHandlers(interp, objc, objv, flags); } - if (!weLookUp) { - goto commandFound; - } - - /* - * Configure evaluation context to match the requested flags. - */ - - if ((flags & TCL_EVAL_INVOKE) || lookupNsPtr) { - if (!lookupNsPtr) { - lookupNsPtr = iPtr->globalNsPtr; - } + if (preCmdPtr) { + cmdPtr = preCmdPtr; } else { - if (flags & TCL_EVAL_GLOBAL) { - TEOV_SwitchVarFrame(interp); - lookupNsPtr = iPtr->globalNsPtr; - } /* - * TCL_EVAL_INVOKE was not set: clear rewrite rules + * Configure evaluation context to match the requested flags. */ - iPtr->ensembleRewrite.sourceObjs = NULL; - } + if (lookupNsPtr) { + /* + * Do nothing. Caller gave us the lookup namespace. Use it. + * Overrides TCL_EVAL_GLOBAL. For both lookup and eval. + */ + } else if (flags & TCL_EVAL_INVOKE) { + lookupNsPtr = iPtr->globalNsPtr; + } else { - /* - * Lookup the command - */ + /* + * TCL_EVAL_INVOKE was not set: clear rewrite rules + */ - cmdPtr = TEOV_LookupCmdFromObj(interp, objv[0], lookupNsPtr); - if (!cmdPtr) { - return TEOV_NotFound(interp, objc, objv, lookupNsPtr); - } + iPtr->ensembleRewrite.sourceObjs = NULL; - /* - * Found a command! The real work begins now ... - */ + if (flags & TCL_EVAL_GLOBAL) { + /* TODO: Check we do this whenever needed. */ + TEOV_SwitchVarFrame(interp); + lookupNsPtr = iPtr->globalNsPtr; + } + } + + cmdPtr = TEOV_LookupCmdFromObj(interp, objv[0], lookupNsPtr); + if (!cmdPtr) { + return TEOV_NotFound(interp, objc, objv, lookupNsPtr); + } + + } - commandFound: if (iPtr->tracePtr || (cmdPtr->flags & CMD_HAS_EXEC_TRACES)) { /* * Call enter traces. They will schedule a call to the leave traces if @@ -4244,7 +4248,7 @@ EvalObjvCore( * If we got the trace command by looking up a command name, we * should just look it up again. */ - if (weLookUp) { + if (preCmdPtr == NULL) { cmdPtr = TEOV_LookupCmdFromObj(interp, objv[0], lookupNsPtr); } else { @@ -4273,7 +4277,7 @@ EvalObjvCore( } if (cmdPtr == NULL) { - if (weLookUp) { + if (preCmdPtr == NULL) { return TEOV_NotFound(interp, objc, objv, lookupNsPtr); } /* Is this right??? */ @@ -4798,7 +4802,6 @@ TEOV_LookupCmdFromObj( if (lookupNsPtr) { iPtr->varFramePtr->nsPtr = lookupNsPtr; - iPtr->lookupNsPtr = NULL; } cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, namePtr); iPtr->varFramePtr->nsPtr = savedNsPtr; |