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Io2Objc.m
460 lines (403 loc) · 15.5 KB
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Io2Objc.m
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/* Copyright (c) 2003, Steve Dekorte
* All rights reserved. See _BSDLicense.txt.
*/
#import <Foundation/Foundation.h>
//#import <Foundation/NSObjCRuntime.h>
#include "Io2Objc.h"
#include "List.h"
#include "IoBlock.h"
#define DATA(self) ((Io2ObjcData *)IoObject_dataPointer(self))
IoTag *Io2Objc_newTag(void *state)
{
IoTag *tag = IoTag_newWithName_("Io2Objc");
IoTag_state_(tag, state);
IoTag_cloneFunc_(tag, (IoTagCloneFunc *)Io2Objc_rawClone);
IoTag_freeFunc_(tag, (IoTagFreeFunc *)Io2Objc_free);
IoTag_markFunc_(tag, (IoTagMarkFunc *)Io2Objc_mark);
IoTag_performFunc_(tag, (IoTagPerformFunc *)Io2Objc_perform);
return tag;
}
Io2Objc *Io2Objc_proto(void *state)
{
IoObject *self = IoObject_new(state);
IoObject_tag_(self, Io2Objc_newTag(state));
IoObject_setDataPointer_(self, objc_calloc(1, sizeof(Io2ObjcData)));
DATA(self)->returnBufferSize = 128;
DATA(self)->returnBuffer = objc_malloc(DATA(self)->returnBufferSize);
DATA(self)->object = nil;
DATA(self)->bridge = IoObjcBridge_sharedBridge();
assert(DATA(self)->bridge != NULL);
IoState_registerProtoWithFunc_(state, self, Io2Objc_proto);
IoMethodTable methodTable[] = {
{"newSubclassNamed:", Io2Objc_newSubclassNamed},
{"metaclass", Io2Objc_metaclass},
{"setSlot", Io2Objc_setSlot},
{"updateSlot", Io2Objc_updateSlot},
{"super", Io2Objc_super},
//{"print", Io2Objc_print},
//{"slotSummary", Io2Objc_slotSummary},
{NULL, NULL}
};
IoObject_addMethodTable_(self, methodTable);
return self;
}
Io2Objc *Io2Objc_rawClone(Io2Objc *proto)
{
IoObject *self = IoObject_rawClonePrimitive(proto);
IoObject_setDataPointer_(self, cpalloc(DATA(proto), sizeof(Io2ObjcData)));
DATA(self)->returnBufferSize = 128;
DATA(self)->returnBuffer = objc_malloc(DATA(self)->returnBufferSize);
return self;
}
Io2Objc *Io2Objc_new(void *state)
{
IoObject *proto = IoState_protoWithInitFunction_(state, Io2Objc_proto);
return IOCLONE(proto);
}
Io2Objc *Io2Objc_newWithId_(void *state, id obj)
{
Io2Objc *self = Io2Objc_new(state);
Io2Objc_setObject(self, obj);
return self;
}
void Io2Objc_free(Io2Objc *self)
{
id object = DATA(self)->object;
if (IoObjcBridge_sharedBridge()) IoObjcBridge_removeId_(DATA(self)->bridge, object);
//printf("Io2Objc_free %p that referenced a %s\n", (void *)object, [[object className] cString]);
if (object != nil && [object class] != object) // && (((Class)object)->info & CLS_META) != CLS_META)
[object autorelease];
objc_free(DATA(self)->returnBuffer);
objc_free(DATA(self));
IoObject_dataPointer(self) = NULL;
}
void Io2Objc_mark(Io2Objc *self)
{
IoObject_shouldMark(DATA(self)->bridge);
}
void Io2Objc_setBridge(Io2Objc *self, void *bridge)
{
DATA(self)->bridge = bridge;
}
void Io2Objc_setObject(Io2Objc *self, void *object)
{
if (object != nil && ([(id)object class] != (id)object)) //&& (((Class)object)->info & CLS_META) != CLS_META)
DATA(self)->object = [(id)object retain];
else
DATA(self)->object = (id)object;
}
void *Io2Objc_object(Io2Objc *self)
{
return DATA(self)->object;
}
void Io2Objc_nullObjcBridge(Io2Objc *self)
{
DATA(self)->bridge = NULL;
}
/* ----------------------------------------------------------------- */
IoObject *Io2Objc_perform(Io2Objc *self, IoObject *locals, IoMessage *m)
{
/* --- get the method signature ------------ */
NSInvocation *invocation = nil;
NSMethodSignature *methodSignature;
char *methodName = IoObjcBridge_objcMethodFor_(DATA(self)->bridge, CSTRING(IoMessage_name(m)));
SEL selector = sel_getUid(methodName);
id object = DATA(self)->object;
BOOL debug = IoObjcBridge_rawDebugOn(DATA(self)->bridge);
IoObject *result;
//NSLog(@"[%@<%i> %s]", NSStringFromClass( [object class] ), object, CSTRING(m->method));
// see if receiver can handle message -------------
BOOL respondsToSelector;
if (object != nil && [object class] == object) //(((Class)object)->info & CLS_META) == CLS_META)
{
//((Class)object)->info ^= CLS_CLASS;
//((Class)object)->info ^= CLS_META;
respondsToSelector = [object respondsToSelector:selector];
//((Class)object)->info ^= CLS_META;
//((Class)object)->info ^= CLS_CLASS;
}
else
respondsToSelector = [object respondsToSelector:selector];
if (!respondsToSelector)
return IoObject_perform(self, locals, m);
methodSignature = [object methodSignatureForSelector:selector];
/* --- create an invocation ------------- */
invocation = [NSInvocation invocationWithMethodSignature:methodSignature];
[invocation setTarget:object];
[invocation setSelector:selector];
if (debug)
{
const char *cType = [methodSignature methodReturnType];
IoState_print_(IOSTATE, "Io -> Objc: %s (%s)",
[[object className] UTF8String],
IoObjcBridge_nameForTypeChar_(DATA(self)->bridge, *cType));
IoState_print_(IOSTATE, "%s(", methodName);
}
/* --- attach arguments to invocation --- */
{
int n, max = [methodSignature numberOfArguments];
for (n = 2; n < max; n++)
{
char *error;
const char *cType = [methodSignature getArgumentTypeAtIndex:n];
IoObject *ioValue = IoMessage_locals_valueArgAt_(m, locals, n-2);
void *cValue = IoObjcBridge_cValueForIoObject_ofType_error_(DATA(self)->bridge, ioValue, cType, &error);
if (debug)
{
printf("%s", IoObjcBridge_nameForTypeChar_(DATA(self)->bridge, *cType));
if (n < max - 1)
printf(", ");
}
if (error)
IoState_error_(IOSTATE, m, "Io Io2Objc perform %s - argtype:'%s' argnum:%i", error, cType, n-2);
[invocation setArgument:cValue atIndex:n]; /* copies the contents of value as a buffer of the appropriate size */
}
}
if (debug)
IoState_print_(IOSTATE, ")\n");
/* --- invoke --------------------------- */
{
NS_DURING
[invocation invoke];
NS_HANDLER
IoState_error_(IOSTATE, m, "Io Io2Objc perform while sending '%s' %s - %s", methodName, [[localException name] UTF8String], [[localException reason] UTF8String]);
NS_ENDHANDLER
}
/* --- return result --------------------------- */
{
char *error;
const char *cType = [methodSignature methodReturnType];
unsigned int length = [methodSignature methodReturnLength];
if (*cType == 'v')
return IONIL(self); /* void */
if ((unsigned int)DATA(self)->returnBufferSize < length)
{
DATA(self)->returnBuffer = objc_realloc(DATA(self)->returnBuffer, length);
DATA(self)->returnBufferSize = length;
}
[invocation getReturnValue:DATA(self)->returnBuffer];
result = IoObjcBridge_ioValueForCValue_ofType_error_(DATA(self)->bridge, DATA(self)->returnBuffer, cType, &error);
if (error)
IoState_error_(IOSTATE, m, "Io Io2Objc perform %s - return type:'%s'", error, cType);
}
return result;
}
void forwardInvocation(id self, SEL sel, NSInvocation *invocation)
{
Class save, class;
IoObject *result, *context;
IoObjcBridge *bridge = IoObjcBridge_sharedBridge();
IoObject *target = IoObjcBridge_proxyForId_(bridge, [invocation target]);
const char *returnType = [[invocation methodSignature] methodReturnType];
IoMessage *message = IoObjcBridge_ioMessageForNSInvocation_(bridge, invocation);
char *name = objc_malloc(2 + strlen(sel_getName([invocation selector])));
name[0] = '-';
name[1] = 0;
IoSymbol *symbol = IoState_symbolWithCString_(IoObject_state(bridge), strcat(name, sel_getName([invocation selector])));
objc_free(name);
for (class = self->isa ; class != nil ; class = [class superclass]) // class->super_class)
{
Io2Objc *io2objc = PHash_at_(((IoObjcBridgeData *)DATA(bridge))->io2objcs, class);
if (io2objc == NULL)
continue;
IoObject *slotValue = IoObject_rawGetSlot_context_(io2objc, symbol, &context);
if (slotValue == NULL)
continue;
save = DATA(target)->object->isa;
DATA(target)->object->isa = class;
result = IoObject_activate(slotValue, target, target, message, context);
DATA(target)->object->isa = save;
if (*returnType != 'v')
{
char *error;
void *cResult = IoObjcBridge_cValueForIoObject_ofType_error_(bridge, result, returnType, &error);
if (error)
IoState_error_(IoObject_state(bridge), message, "Io Io2Objc forwardInvocation %s - return type:'%s'", error, returnType);
[invocation setReturnValue:cResult];
}
return;
}
IoState_error_(IoObject_state(bridge), message, "'%s' does not respond to message '%s'", [[[invocation target] className] UTF8String], CSTRING(symbol));
}
BOOL respondsToSelector(id self, SEL sel, SEL selector)
{
Io2Objc *io2objc = PHash_at_(((IoObjcBridgeData *)DATA(IoObjcBridge_sharedBridge()))->io2objcs, self->isa);
IoObjcBridge *bridge = DATA(io2objc)->bridge;
IoState *state = IoObject_state(bridge);
BOOL debug = IoObjcBridge_rawDebugOn(bridge);
char *ioMethodName = IoObjcBridge_ioMethodFor_(bridge, (char *)sel_getName(selector));
if (debug)
IoState_print_(state, "[Io2Objc respondsToSelector:\"%s\"] ", ioMethodName);
BOOL result = class_getInstanceMethod(self->isa, selector) ? YES : NO;
if (debug)
IoState_print_(state, "= %i\n", result);
return result;
}
NSMethodSignature *methodSignatureForSelector(id self, SEL sel, SEL selector)
{
Method method = class_getInstanceMethod(self->isa, selector);
if (method)
return [NSMethodSignature signatureWithObjCTypes:method_getTypeEncoding(method)]; //(method->method_types)];
else
return nil;
}
Io2Objc *Io2Objc_newSubclassNamed(Io2Objc *self, IoObject *locals, IoMessage *m)
{
/*
Class class = objc_makeClass(IoMessage_locals_cStringArgAt_(m, locals, 0), [[DATA(self)->object className] UTF8String], NO);
objc_addClass(class);
Io_class_addMethod(class, sel_getUid("forwardInvocation:"), "v12@0:4@8", (IMP)forwardInvocation, NO);
Io_class_addMethod(class, sel_getUid("forwardInvocation:"), "v12@0:4@8", (IMP)forwardInvocation, YES);
Io_class_addMethod(class, sel_getUid("respondsToSelector:"), "C12@0:4:8", (IMP)respondsToSelector, YES);
Io_class_addMethod(class, sel_getUid("methodSignatureForSelector:"), "@12@0:4:8", (IMP)methodSignatureForSelector, YES);
((IoObjcBridgeData *)DATA(DATA(self)->bridge))->allClasses = NULL;
return IoObjcBridge_proxyForId_(DATA(self)->bridge, class);
*/
printf("Io2Objc_newSubclassNamed not supported\n");
return nil;
}
IoObject *Io2Objc_metaclass(Io2Objc *self, IoObject *locals, IoMessage *m)
{
return IoObjcBridge_proxyForId_(DATA(self)->bridge, DATA(self)->object->isa);
}
IoObject *Io2Objc_setSlot(Io2Objc *self, IoObject *locals, IoMessage *m)
{
/*
// char *name = IoMessage_locals_cStringArgAt_(m, locals, 0);
// if (*name == '"') *(++name + strlen(name) - 1) = 0;
// IoSymbol *slotName = IOSYMBOL(name);
IoSymbol *slotName = IoMessage_locals_symbolArgAt_(m, locals, 0);
IoObject *slotValue = IoMessage_locals_valueArgAt_(m, locals, 1);
if (ISBLOCK(slotValue))
{
unsigned int argCount = IoMessage_argCount(slotValue);
unsigned int expectedArgCount = 0;
const char *name = CSTRING(slotName);
while (*name) expectedArgCount += (*name++ == ':');
if (argCount != expectedArgCount)
IoState_error_(IOSTATE, m, "Method '%s' is waiting for %i arguments, %i given\n", CSTRING(slotName), expectedArgCount, argCount);
Class class = DATA(self)->object;
// if ((class->info & CLS_CLASS) != CLS_CLASS && (class->info & CLS_META) != CLS_META)
// IoState_error_(IOSTATE, m, "You cannot add method '%s' to instance '%s'\n", CSTRING(slotName), [[class description] UTF8String]);
Method method = class_getInstanceMethod(class, sel_getUid(CSTRING(slotName)));
if (method)
{
const char *types = method_getTypeEncoding(method);
SEL selector = sel_get_typed_uid(CSTRING(slotName), types); //method->method_types);
if (!selector) selector = sel_register_typed_name(CSTRING(slotName), types);
Io_class_addMethod(class, selector, types, __objc_get_forward_imp(selector), YES);
}
else
{
const char *encoding = IoObjcBridge_selectorEncoding(DATA(self)->bridge, sel_getUid(CSTRING(slotName)));
if (encoding)
{
SEL selector = sel_get_typed_uid(CSTRING(slotName), encoding);
if (!selector) selector = sel_register_typed_name(CSTRING(slotName), encoding);
Io_class_addMethod(class, selector, encoding, __objc_get_forward_imp(selector), YES);
}
else
{
char *types = objc_malloc((argCount + 4) * sizeof(char));
memset(types, '@', argCount + 3);
types[argCount + 3] = 0;
types[2] = ':';
SEL selector = sel_get_typed_uid(CSTRING(slotName), types);
if (!selector) selector = sel_register_typed_name(CSTRING(slotName), types);
Io_class_addMethod(class, selector, types, __objc_get_forward_imp(selector), YES);
objc_free(types);
}
}
{
char *name = objc_malloc(2 + strlen(CSTRING(slotName)));
name[0] = '-';
name[1] = 0;
IoSymbol *symbol = IoState_symbolWithCString_(IOSTATE, strcat(name, CSTRING(slotName)));
objc_free(name);
IoObject_inlineSetSlot_to_(self, symbol, slotValue);
}
}
else
IoObject_inlineSetSlot_to_(self, slotName, slotValue);
return slotValue;
*/
printf("Io2Objc_setSlot ERROR setSlot not supported\n");
return self;
}
IoObject *Io2Objc_updateSlot(Io2Objc *self, IoObject *locals, IoMessage *m)
{
// char *name = IoMessage_locals_cStringArgAt_(m, locals, 0);
// if (*name == '"') *(++name + strlen(name) - 1) = 0;
// IoSymbol *slotName = IOSYMBOL(name);
IoSymbol *slotName = IoMessage_locals_symbolArgAt_(m, locals, 0);
IoObject *slotValue = IoMessage_locals_valueArgAt_(m, locals, 1);
if (ISBLOCK(slotValue))
{
unsigned int argCount = IoMessage_argCount(slotValue);
unsigned int expectedArgCount = 0;
const char *name = CSTRING(slotName);
while (*name) expectedArgCount += (*name++ == ':');
if (argCount != expectedArgCount)
IoState_error_(IOSTATE, m, "Method '%s' is waiting for %i arguments, %i given\n", CSTRING(slotName), expectedArgCount, argCount);
{
char *name = objc_malloc(2 + strlen(CSTRING(slotName)));
name[0] = '-';
name[1] = 0;
IoSymbol *symbol = IoState_symbolWithCString_(IOSTATE, strcat(name, CSTRING(slotName)));
objc_free(name);
if (IoObject_rawGetSlot_(self, symbol))
IoObject_inlineSetSlot_to_(self, symbol, slotValue);
else
IoState_error_(IOSTATE, m, "Slot %s not found. Must define slot using := operator before updating.", CSTRING(slotName));
}
}
else
if (IoObject_rawGetSlot_(self, slotName))
IoObject_inlineSetSlot_to_(self, slotName, slotValue);
else
IoState_error_(IOSTATE, m, "Slot %s not found. Must define slot using := operator before updating.", CSTRING(slotName));
return slotValue;
}
IoObject *Io2Objc_super(Io2Objc *self, IoObject *locals, IoMessage *m)
{
IoMessage *message = List_at_(IOMESSAGEDATA(m)->args, 0);
Class save = DATA(self)->object->isa;
DATA(self)->object->isa = [save superclass]; // save->super_class;
IoObject *result = Io2Objc_perform(self, locals, message);
DATA(self)->object->isa = save;
return result;
}
/*IoObject *Io2Objc_print(Io2Objc *self, IoObject *locals, IoMessage *m)
{
printf("%s", [[DATA(self)->object description] cString]);
return IONIL(self);
}*/
/*IoObject *Io2Objc_slotSummary(Io2Objc *self, IoObject *locals, IoMessage *m)
{
int i;
struct objc_method_list *methods;
Class class = DATA(self)->object->isa;
NSMutableSet *set = [[NSMutableSet alloc] initWithCapacity:32];
while (class != nil)
{
void *iterator = 0;
while ((methods = class_nextMethodList(class, &iterator)))
{
for (i = 0; i < methods->method_count; i++)
{
struct objc_method *method = &methods->method_list[i];
if (method->method_name != 0)
{
NSString *name = [[NSString alloc] initWithUTF8String:sel_getName(method->method_name)];
[set addObject:name];
[name release];
}
}
}
class = class->super_class;
}
NSArray *array = [[set allObjects] sortedArrayUsingSelector:@selector(compare:)];
[set release];
for (i = 0; i < [array count]; i++) printf("%i: %s\n", i, [[[array objectAtIndex:i] description] cString]);
return IONIL(self);
}*/