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author | dgp <dgp@users.sourceforge.net> | 2016-06-16 16:27:01 (GMT) |
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committer | dgp <dgp@users.sourceforge.net> | 2016-06-16 16:27:01 (GMT) |
commit | 3cbd3b2bede59c6fd03330ac014e626a0a776522 (patch) | |
tree | 8e125264e32e68a389be074bfb8795cd212b9114 /generic/tclOO.c | |
parent | 95fb48bf07be37ad0717475514d2c444602a0a6c (diff) | |
parent | 4fac9b8d0fb5648943635cf4c956c9518e610921 (diff) | |
download | tcl-bug_16828b3744.zip tcl-bug_16828b3744.tar.gz tcl-bug_16828b3744.tar.bz2 |
Merge tip of core-8-6-branchbug_16828b3744
Diffstat (limited to 'generic/tclOO.c')
-rw-r--r-- | generic/tclOO.c | 147 |
1 files changed, 106 insertions, 41 deletions
diff --git a/generic/tclOO.c b/generic/tclOO.c index cb22de6..9df5029 100644 --- a/generic/tclOO.c +++ b/generic/tclOO.c @@ -58,6 +58,8 @@ static const struct { static Class * AllocClass(Tcl_Interp *interp, Object *useThisObj); static Object * AllocObject(Tcl_Interp *interp, const char *nameStr, const char *nsNameStr); +static void ClearMixins(Class *clsPtr); +static void ClearSuperclasses(Class *clsPtr); static int CloneClassMethod(Tcl_Interp *interp, Class *clsPtr, Method *mPtr, Tcl_Obj *namePtr, Method **newMPtrPtr); @@ -271,7 +273,7 @@ TclOOInit( return TCL_ERROR; } - return Tcl_PkgProvideEx(interp, "TclOO", TCLOO_VERSION, + return Tcl_PkgProvideEx(interp, "TclOO", TCLOO_PATCHLEVEL, (ClientData) &tclOOStubs); } @@ -394,6 +396,7 @@ InitFoundation( fPtr->classCls->flags |= ROOT_CLASS; TclOOAddToInstances(fPtr->objectCls->thisPtr, fPtr->classCls); TclOOAddToInstances(fPtr->classCls->thisPtr, fPtr->classCls); + TclOOAddToSubclasses(fPtr->classCls, fPtr->objectCls); AddRef(fPtr->objectCls->thisPtr); AddRef(fPtr->objectCls); @@ -437,10 +440,12 @@ InitFoundation( * ensemble. */ - Tcl_CreateObjCommand(interp, "::oo::Helpers::next", TclOONextObjCmd, NULL, - NULL); - Tcl_CreateObjCommand(interp, "::oo::Helpers::nextto", TclOONextToObjCmd, - NULL, NULL); + cmdPtr = (Command *) Tcl_NRCreateCommand(interp, "::oo::Helpers::next", + NULL, TclOONextObjCmd, NULL, NULL); + cmdPtr->compileProc = TclCompileObjectNextCmd; + cmdPtr = (Command *) Tcl_NRCreateCommand(interp, "::oo::Helpers::nextto", + NULL, TclOONextToObjCmd, NULL, NULL); + cmdPtr->compileProc = TclCompileObjectNextToCmd; cmdPtr = (Command *) Tcl_CreateObjCommand(interp, "::oo::Helpers::self", TclOOSelfObjCmd, NULL, NULL); cmdPtr->compileProc = TclCompileObjectSelfCmd; @@ -790,7 +795,7 @@ ObjectRenamedTrace( ClientData clientData, /* The object being deleted. */ Tcl_Interp *interp, /* The interpreter containing the object. */ const char *oldName, /* What the object was (last) called. */ - const char *newName, /* Always NULL. */ + const char *newName, /* What it's getting renamed to. (unused) */ int flags) /* Why was the object deleted? */ { Object *oPtr = clientData; @@ -893,6 +898,55 @@ ObjectRenamedTrace( /* * ---------------------------------------------------------------------- * + * ClearMixins, ClearSuperclasses -- + * + * Utility functions for correctly clearing the list of mixins or + * superclasses of a class. Will ckfree() the list storage. + * + * ---------------------------------------------------------------------- + */ + +static void +ClearMixins( + Class *clsPtr) +{ + int i; + Class *mixinPtr; + + if (clsPtr->mixins.num == 0) { + return; + } + + FOREACH(mixinPtr, clsPtr->mixins) { + TclOORemoveFromMixinSubs(clsPtr, mixinPtr); + } + ckfree(clsPtr->mixins.list); + clsPtr->mixins.list = NULL; + clsPtr->mixins.num = 0; +} + +static void +ClearSuperclasses( + Class *clsPtr) +{ + int i; + Class *superPtr; + + if (clsPtr->superclasses.num == 0) { + return; + } + + FOREACH(superPtr, clsPtr->superclasses) { + TclOORemoveFromSubclasses(clsPtr, superPtr); + } + ckfree(clsPtr->superclasses.list); + clsPtr->superclasses.list = NULL; + clsPtr->superclasses.num = 0; +} + +/* + * ---------------------------------------------------------------------- + * * ReleaseClassContents -- * * Tear down the special class data structure, including deleting all @@ -948,6 +1002,16 @@ ReleaseClassContents( } if (!IsRootClass(oPtr)) { FOREACH(instancePtr, clsPtr->instances) { + int j; + if (instancePtr->selfCls == clsPtr) { + instancePtr->flags |= CLASS_GONE; + } + for(j=0 ; j<instancePtr->mixins.num ; j++) { + Class *mixin = instancePtr->mixins.list[j]; + if (mixin == clsPtr) { + instancePtr->mixins.list[j] = NULL; + } + } if (instancePtr != NULL && !IsRoot(instancePtr)) { AddRef(instancePtr); } @@ -959,13 +1023,11 @@ ReleaseClassContents( */ FOREACH(mixinSubclassPtr, clsPtr->mixinSubs) { - if (mixinSubclassPtr == NULL) { - continue; - } if (!Deleted(mixinSubclassPtr->thisPtr)) { Tcl_DeleteCommandFromToken(interp, mixinSubclassPtr->thisPtr->command); } + ClearMixins(mixinSubclassPtr); DelRef(mixinSubclassPtr->thisPtr); DelRef(mixinSubclassPtr); } @@ -980,12 +1042,13 @@ ReleaseClassContents( */ FOREACH(subclassPtr, clsPtr->subclasses) { - if (subclassPtr == NULL || IsRoot(subclassPtr)) { + if (IsRoot(subclassPtr)) { continue; } if (!Deleted(subclassPtr->thisPtr)) { Tcl_DeleteCommandFromToken(interp, subclassPtr->thisPtr->command); } + ClearSuperclasses(subclassPtr); DelRef(subclassPtr->thisPtr); DelRef(subclassPtr); } @@ -1006,6 +1069,12 @@ ReleaseClassContents( } if (!Deleted(instancePtr)) { Tcl_DeleteCommandFromToken(interp, instancePtr->command); + /* + * Tcl_DeleteCommandFromToken() may have done to whole + * job for us. Roll back and check again. + */ + i--; + continue; } DelRef(instancePtr); } @@ -1122,12 +1191,14 @@ ObjectNamespaceDeleted( * methods on the object. */ - if (!IsRootObject(oPtr)) { + if (!IsRootObject(oPtr) && !(oPtr->flags & CLASS_GONE)) { TclOORemoveFromInstances(oPtr, oPtr->selfCls); } FOREACH(mixinPtr, oPtr->mixins) { - TclOORemoveFromInstances(oPtr, mixinPtr); + if (mixinPtr) { + TclOORemoveFromInstances(oPtr, mixinPtr); + } } if (i) { ckfree(oPtr->mixins.list); @@ -1173,8 +1244,11 @@ ObjectNamespaceDeleted( oPtr->metadataPtr = NULL; } + /* + * If this was a class, there's additional deletion work to do. + */ + if (clsPtr != NULL) { - Class *superPtr; Tcl_ObjectMetadataType *metadataTypePtr; ClientData value; @@ -1194,24 +1268,11 @@ ObjectNamespaceDeleted( ckfree(clsPtr->filters.list); clsPtr->filters.num = 0; } - FOREACH(mixinPtr, clsPtr->mixins) { - if (!Deleted(mixinPtr->thisPtr)) { - TclOORemoveFromMixinSubs(clsPtr, mixinPtr); - } - } - if (i) { - ckfree(clsPtr->mixins.list); - clsPtr->mixins.num = 0; - } - FOREACH(superPtr, clsPtr->superclasses) { - if (!Deleted(superPtr->thisPtr)) { - TclOORemoveFromSubclasses(clsPtr, superPtr); - } - } - if (i) { - ckfree(clsPtr->superclasses.list); - clsPtr->superclasses.num = 0; - } + + ClearMixins(clsPtr); + + ClearSuperclasses(clsPtr); + if (clsPtr->subclasses.list) { ckfree(clsPtr->subclasses.list); clsPtr->subclasses.num = 0; @@ -1278,6 +1339,9 @@ TclOORemoveFromInstances( removeInstance: if (Deleted(clsPtr->thisPtr)) { + if (!IsRootClass(clsPtr)) { + DelRef(clsPtr->instances.list[i]); + } clsPtr->instances.list[i] = NULL; } else { clsPtr->instances.num--; @@ -1350,9 +1414,7 @@ TclOORemoveFromSubclasses( return; removeSubclass: - if (Deleted(superPtr->thisPtr)) { - superPtr->subclasses.list[i] = NULL; - } else { + if (!Deleted(superPtr->thisPtr)) { superPtr->subclasses.num--; if (i < superPtr->subclasses.num) { superPtr->subclasses.list[i] = @@ -1423,9 +1485,7 @@ TclOORemoveFromMixinSubs( return; removeSubclass: - if (Deleted(superPtr->thisPtr)) { - superPtr->mixinSubs.list[i] = NULL; - } else { + if (!Deleted(superPtr->thisPtr)) { superPtr->mixinSubs.num--; if (i < superPtr->mixinSubs.num) { superPtr->mixinSubs.list[i] = @@ -1663,10 +1723,13 @@ Tcl_NewObjectInstance( /* * Take care to not delete a deleted object; that would be - * bad. [Bug 2903011] + * bad. [Bug 2903011] Also take care to make sure that we have + * the name of the command before we delete it. [Bug + * 9dd1bd7a74] */ if (!Deleted(oPtr)) { + (void) TclOOObjectName(interp, oPtr); Tcl_DeleteCommandFromToken(interp, oPtr->command); } return NULL; @@ -1809,10 +1872,12 @@ FinalizeAlloc( /* * Take care to not delete a deleted object; that would be bad. [Bug - * 2903011] + * 2903011] Also take care to make sure that we have the name of the + * command before we delete it. [Bug 9dd1bd7a74] */ if (!Deleted(oPtr)) { + (void) TclOOObjectName(interp, oPtr); Tcl_DeleteCommandFromToken(interp, oPtr->command); } DelRef(oPtr); @@ -1891,13 +1956,13 @@ Tcl_CopyObjectInstance( */ FOREACH(mixinPtr, o2Ptr->mixins) { - if (mixinPtr != o2Ptr->selfCls) { + if (mixinPtr && mixinPtr != o2Ptr->selfCls) { TclOORemoveFromInstances(o2Ptr, mixinPtr); } } DUPLICATE(o2Ptr->mixins, oPtr->mixins, Class *); FOREACH(mixinPtr, o2Ptr->mixins) { - if (mixinPtr != o2Ptr->selfCls) { + if (mixinPtr && mixinPtr != o2Ptr->selfCls) { TclOOAddToInstances(o2Ptr, mixinPtr); } } |