diff options
Diffstat (limited to 'generic/tclOODefineCmds.c')
| -rw-r--r-- | generic/tclOODefineCmds.c | 103 |
1 files changed, 71 insertions, 32 deletions
diff --git a/generic/tclOODefineCmds.c b/generic/tclOODefineCmds.c index 3d72690..69cffb0 100644 --- a/generic/tclOODefineCmds.c +++ b/generic/tclOODefineCmds.c @@ -17,6 +17,13 @@ #include "tclOOInt.h" /* + * The maximum length of fully-qualified object name to use in an errorinfo + * message. Longer than this will be curtailed. + */ + +#define OBJNAME_LENGTH_IN_ERRORINFO_LIMIT 30 + +/* * Some things that make it easier to declare a slot. */ @@ -40,6 +47,8 @@ struct DeclaredSlot { static inline void BumpGlobalEpoch(Tcl_Interp *interp, Class *classPtr); static Tcl_Command FindCommand(Tcl_Interp *interp, Tcl_Obj *stringObj, Tcl_Namespace *const namespacePtr); +static void GenerateErrorInfo(Tcl_Interp *interp, Object *oPtr, + Tcl_Obj *savedNameObj, const char *typeOfSubject); static inline Class * GetClassInOuterContext(Tcl_Interp *interp, Tcl_Obj *className, const char *errMsg); static inline int InitDefineContext(Tcl_Interp *interp, @@ -673,6 +682,7 @@ TclOOGetDefineCmdContext( Tcl_Interp *interp) { Interp *iPtr = (Interp *) interp; + Tcl_Object object; if ((iPtr->varFramePtr == NULL) || (iPtr->varFramePtr->isProcCallFrame != FRAME_IS_OO_DEFINE)) { @@ -682,7 +692,14 @@ TclOOGetDefineCmdContext( Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL); return NULL; } - return (Tcl_Object) iPtr->varFramePtr->clientData; + object = iPtr->varFramePtr->clientData; + if (Tcl_ObjectDeleted(object)) { + Tcl_AppendResult(interp, "this command cannot be called when the " + "object has been deleted", NULL); + Tcl_SetErrorCode(interp, "TCL", "OO", "MONKEY_BUSINESS", NULL); + return NULL; + } + return object; } /* @@ -730,6 +747,44 @@ GetClassInOuterContext( /* * ---------------------------------------------------------------------- * + * GenerateErrorInfo -- + * Factored out code to generate part of the error trace messages. + * + * ---------------------------------------------------------------------- + */ + +static void +GenerateErrorInfo( + Tcl_Interp *interp, /* Where to store the error info trace. */ + Object *oPtr, /* What object (or class) was being configured + * when the error occurred? */ + Tcl_Obj *savedNameObj, /* Name of object saved from before script was + * evaluated, which is needed if the object + * goes away part way through execution. OTOH, + * if the object isn't deleted then its + * current name (post-execution) has to be + * used. This matters, because the object + * could have been renamed... */ + const char *typeOfSubject) /* Part of the message, saying whether it was + * an object, class or class-as-object that + * was being configured. */ +{ + int length; + Tcl_Obj *realNameObj = Tcl_ObjectDeleted((Tcl_Object) oPtr) + ? savedNameObj : TclOOObjectName(interp, oPtr); + const char *objName = Tcl_GetStringFromObj(realNameObj, &length); + int limit = OBJNAME_LENGTH_IN_ERRORINFO_LIMIT; + int overflow = (length > limit); + + Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( + "\n (in definition script for %s \"%.*s%s\" line %d)", + typeOfSubject, (overflow ? limit : length), objName, + (overflow ? "..." : ""), Tcl_GetErrorLine(interp))); +} + +/* + * ---------------------------------------------------------------------- + * * TclOODefineObjCmd -- * Implementation of the "oo::define" command. Works by effectively doing * the same as 'namespace eval', but with extra magic applied so that the @@ -779,20 +834,15 @@ TclOODefineObjCmd( AddRef(oPtr); if (objc == 3) { + Tcl_Obj *objNameObj = TclOOObjectName(interp, oPtr); + + Tcl_IncrRefCount(objNameObj); result = TclEvalObjEx(interp, objv[2], 0, ((Interp *)interp)->cmdFramePtr, 2); - if (result == TCL_ERROR) { - int length; - const char *objName = Tcl_GetStringFromObj(objv[1], &length); - int limit = 60; - int overflow = (length > limit); - - Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( - "\n (in definition script for object \"%.*s%s\" line %d)", - (overflow ? limit : length), objName, - (overflow ? "..." : ""), Tcl_GetErrorLine(interp))); + GenerateErrorInfo(interp, oPtr, objNameObj, "class"); } + TclDecrRefCount(objNameObj); } else { Tcl_Obj *objPtr, *obj2Ptr, **objs; Interp *iPtr = (Interp *) interp; @@ -898,20 +948,15 @@ TclOOObjDefObjCmd( AddRef(oPtr); if (objc == 3) { + Tcl_Obj *objNameObj = TclOOObjectName(interp, oPtr); + + Tcl_IncrRefCount(objNameObj); result = TclEvalObjEx(interp, objv[2], 0, ((Interp *)interp)->cmdFramePtr, 2); - if (result == TCL_ERROR) { - int length; - const char *objName = Tcl_GetStringFromObj(objv[1], &length); - int limit = 60; - int overflow = (length > limit); - - Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( - "\n (in definition script for object \"%.*s%s\" line %d)", - (overflow ? limit : length), objName, - (overflow ? "..." : ""), Tcl_GetErrorLine(interp))); + GenerateErrorInfo(interp, oPtr, objNameObj, "object"); } + TclDecrRefCount(objNameObj); } else { Tcl_Obj *objPtr, *obj2Ptr, **objs; Interp *iPtr = (Interp *) interp; @@ -1017,21 +1062,15 @@ TclOODefineSelfObjCmd( AddRef(oPtr); if (objc == 2) { + Tcl_Obj *objNameObj = TclOOObjectName(interp, oPtr); + + Tcl_IncrRefCount(objNameObj); result = TclEvalObjEx(interp, objv[1], 0, ((Interp *)interp)->cmdFramePtr, 2); - if (result == TCL_ERROR) { - int length; - const char *objName = Tcl_GetStringFromObj( - TclOOObjectName(interp, oPtr), &length); - int limit = 60; - int overflow = (length > limit); - - Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf( - "\n (in definition script for object \"%.*s%s\" line %d)", - (overflow ? limit : length), objName, - (overflow ? "..." : ""), Tcl_GetErrorLine(interp))); + GenerateErrorInfo(interp, oPtr, objNameObj, "class object"); } + TclDecrRefCount(objNameObj); } else { Tcl_Obj *objPtr, *obj2Ptr, **objs; Interp *iPtr = (Interp *) interp; |