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Move away from obj->isa, and wrap the workAroundMacOSXABIBreakingBug... #141

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Move away from obj->isa, and wrap the workAroundMacOSXABIBreakingBug... #141

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39 changes: 20 additions & 19 deletions JSONKit.m
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Original file line number Diff line number Diff line change
Expand Up @@ -677,7 +677,7 @@ + (id)allocWithZone:(NSZone *)zone
NSCParameterAssert((objects != NULL) && (_JKArrayClass != NULL) && (_JKArrayInstanceSize > 0UL));
JKArray *array = NULL;
if(JK_EXPECT_T((array = (JKArray *)calloc(1UL, _JKArrayInstanceSize)) != NULL)) { // Directly allocate the JKArray instance via calloc.
array->isa = _JKArrayClass;
object_setClass(array, _JKArrayClass);
if((array = [array init]) == NULL) { return(NULL); }
array->capacity = count;
array->count = count;
Expand Down Expand Up @@ -928,7 +928,7 @@ static void _JKDictionaryResizeIfNeccessary(JKDictionary *dictionary) {
NSCParameterAssert((keys != NULL) && (keyHashes != NULL) && (objects != NULL) && (_JKDictionaryClass != NULL) && (_JKDictionaryInstanceSize > 0UL));
JKDictionary *dictionary = NULL;
if(JK_EXPECT_T((dictionary = (JKDictionary *)calloc(1UL, _JKDictionaryInstanceSize)) != NULL)) { // Directly allocate the JKDictionary instance via calloc.
dictionary->isa = _JKDictionaryClass;
object_setClass(dictionary, _JKDictionaryClass);
if((dictionary = [dictionary init]) == NULL) { return(NULL); }
dictionary->capacity = _JKDictionaryCapacityForCount(count);
dictionary->count = 0UL;
Expand Down Expand Up @@ -2595,22 +2595,25 @@ static int jk_encode_add_atom_to_buffer(JKEncodeState *encodeState, void *object
// XXX XXX XXX XXX


BOOL workAroundMacOSXABIBreakingBug = (JK_EXPECT_F(((NSUInteger)object) & 0x1)) ? YES : NO;
void *objectISA = (JK_EXPECT_F(workAroundMacOSXABIBreakingBug)) ? NULL : *((void **)objectPtr);
if(JK_EXPECT_F(workAroundMacOSXABIBreakingBug)) { goto slowClassLookup; }
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-objc-pointer-introspection"
BOOL workAroundMacOSXABIBreakingBug = (JK_EXPECT_F(((NSUInteger)object) & 0x1)) ? YES : NO;
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this wont work on 64bit iOS devices.

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odyth is right. So thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

#pragma clang diagnostic pop

if(JK_EXPECT_T(objectISA == encodeState->fastClassLookup.stringClass)) { isClass = JKClassString; }
else if(JK_EXPECT_T(objectISA == encodeState->fastClassLookup.numberClass)) { isClass = JKClassNumber; }
else if(JK_EXPECT_T(objectISA == encodeState->fastClassLookup.dictionaryClass)) { isClass = JKClassDictionary; }
else if(JK_EXPECT_T(objectISA == encodeState->fastClassLookup.arrayClass)) { isClass = JKClassArray; }
else if(JK_EXPECT_T(objectISA == encodeState->fastClassLookup.nullClass)) { isClass = JKClassNull; }
if(JK_EXPECT_F(workAroundMacOSXABIBreakingBug)) { goto slowClassLookup; }

if(JK_EXPECT_T(object_getClass(object) == encodeState->fastClassLookup.stringClass)) { isClass = JKClassString; }
else if(JK_EXPECT_T(object_getClass(object) == encodeState->fastClassLookup.numberClass)) { isClass = JKClassNumber; }
else if(JK_EXPECT_T(object_getClass(object) == encodeState->fastClassLookup.dictionaryClass)) { isClass = JKClassDictionary; }
else if(JK_EXPECT_T(object_getClass(object) == encodeState->fastClassLookup.arrayClass)) { isClass = JKClassArray; }
else if(JK_EXPECT_T(object_getClass(object) == encodeState->fastClassLookup.nullClass)) { isClass = JKClassNull; }
else {
slowClassLookup:
if(JK_EXPECT_T([object isKindOfClass:[NSString class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.stringClass = objectISA; } isClass = JKClassString; }
else if(JK_EXPECT_T([object isKindOfClass:[NSNumber class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.numberClass = objectISA; } isClass = JKClassNumber; }
else if(JK_EXPECT_T([object isKindOfClass:[NSDictionary class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.dictionaryClass = objectISA; } isClass = JKClassDictionary; }
else if(JK_EXPECT_T([object isKindOfClass:[NSArray class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.arrayClass = objectISA; } isClass = JKClassArray; }
else if(JK_EXPECT_T([object isKindOfClass:[NSNull class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.nullClass = objectISA; } isClass = JKClassNull; }
if(JK_EXPECT_T([object isKindOfClass:[NSString class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.stringClass = object_getClass(object); } isClass = JKClassString; }
else if(JK_EXPECT_T([object isKindOfClass:[NSNumber class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.numberClass = object_getClass(object); } isClass = JKClassNumber; }
else if(JK_EXPECT_T([object isKindOfClass:[NSDictionary class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.dictionaryClass = object_getClass(object); } isClass = JKClassDictionary; }
else if(JK_EXPECT_T([object isKindOfClass:[NSArray class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.arrayClass = object_getClass(object); } isClass = JKClassArray; }
else if(JK_EXPECT_T([object isKindOfClass:[NSNull class]])) { if(workAroundMacOSXABIBreakingBug == NO) { encodeState->fastClassLookup.nullClass = object_getClass(object); } isClass = JKClassNull; }
else {
if((rerunningAfterClassFormatter == NO) && (
#ifdef __BLOCKS__
Expand Down Expand Up @@ -2792,8 +2795,7 @@ static int jk_encode_add_atom_to_buffer(JKEncodeState *encodeState, void *object
for(id keyObject in enumerateObject) {
if(JK_EXPECT_T(printComma)) { if(JK_EXPECT_F(jk_encode_write1(encodeState, 0L, ","))) { return(1); } }
printComma = 1;
void *keyObjectISA = *((void **)keyObject);
if(JK_EXPECT_F((keyObjectISA != encodeState->fastClassLookup.stringClass)) && JK_EXPECT_F(([keyObject isKindOfClass:[NSString class]] == NO))) { jk_encode_error(encodeState, @"Key must be a string object."); return(1); }
if(JK_EXPECT_F((object_getClass(keyObject) != encodeState->fastClassLookup.stringClass)) && JK_EXPECT_F(([keyObject isKindOfClass:[NSString class]] == NO))) { jk_encode_error(encodeState, @"Key must be a string object."); return(1); }
if(JK_EXPECT_F(jk_encode_add_atom_to_buffer(encodeState, keyObject))) { return(1); }
if(JK_EXPECT_F(jk_encode_write1(encodeState, 0L, ":"))) { return(1); }
if(JK_EXPECT_F(jk_encode_add_atom_to_buffer(encodeState, (void *)CFDictionaryGetValue((CFDictionaryRef)object, keyObject)))) { return(1); }
Expand All @@ -2804,8 +2806,7 @@ static int jk_encode_add_atom_to_buffer(JKEncodeState *encodeState, void *object
for(idx = 0L; idx < dictionaryCount; idx++) {
if(JK_EXPECT_T(printComma)) { if(JK_EXPECT_F(jk_encode_write1(encodeState, 0L, ","))) { return(1); } }
printComma = 1;
void *keyObjectISA = *((void **)keys[idx]);
if(JK_EXPECT_F(keyObjectISA != encodeState->fastClassLookup.stringClass) && JK_EXPECT_F([(id)keys[idx] isKindOfClass:[NSString class]] == NO)) { jk_encode_error(encodeState, @"Key must be a string object."); return(1); }
if(JK_EXPECT_F(object_getClass(((id)keys[idx])) != encodeState->fastClassLookup.stringClass) && JK_EXPECT_F([(id)keys[idx] isKindOfClass:[NSString class]] == NO)) { jk_encode_error(encodeState, @"Key must be a string object."); return(1); }
if(JK_EXPECT_F(jk_encode_add_atom_to_buffer(encodeState, keys[idx]))) { return(1); }
if(JK_EXPECT_F(jk_encode_write1(encodeState, 0L, ":"))) { return(1); }
if(JK_EXPECT_F(jk_encode_add_atom_to_buffer(encodeState, objects[idx]))) { return(1); }
Expand Down