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Diffstat (limited to 'Source/JavaScriptCore/API/ObjCCallbackFunction.mm')
| -rw-r--r-- | Source/JavaScriptCore/API/ObjCCallbackFunction.mm | 615 |
1 files changed, 0 insertions, 615 deletions
diff --git a/Source/JavaScriptCore/API/ObjCCallbackFunction.mm b/Source/JavaScriptCore/API/ObjCCallbackFunction.mm deleted file mode 100644 index cc342f59e..000000000 --- a/Source/JavaScriptCore/API/ObjCCallbackFunction.mm +++ /dev/null @@ -1,615 +0,0 @@ -/* - * Copyright (C) 2013 Apple Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#import "JavaScriptCore.h" - -#if JSC_OBJC_API_ENABLED - -#import "APICast.h" -#import "APIShims.h" -#import "Error.h" -#import "JSCJSValueInlines.h" -#import "JSCell.h" -#import "JSCellInlines.h" -#import "JSContextInternal.h" -#import "JSWrapperMap.h" -#import "JSValueInternal.h" -#import "ObjCCallbackFunction.h" -#import "ObjcRuntimeExtras.h" -#import <objc/runtime.h> -#import <wtf/RetainPtr.h> - -class CallbackArgument { -public: - virtual ~CallbackArgument(); - virtual void set(NSInvocation *, NSInteger, JSContext *, JSValueRef, JSValueRef*) = 0; - - OwnPtr<CallbackArgument> m_next; -}; - -CallbackArgument::~CallbackArgument() -{ -} - -class CallbackArgumentBoolean : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef*) override - { - bool value = JSValueToBoolean([context JSGlobalContextRef], argument); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -template<typename T> -class CallbackArgumentInteger : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - T value = (T)JSC::toInt32(JSValueToNumber([context JSGlobalContextRef], argument, exception)); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -template<typename T> -class CallbackArgumentDouble : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - T value = (T)JSValueToNumber([context JSGlobalContextRef], argument, exception); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentJSValue : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef*) override - { - JSValue *value = [JSValue valueWithJSValueRef:argument inContext:context]; - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentId : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef*) override - { - id value = valueToObject(context, argument); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentOfClass : public CallbackArgument { -public: - CallbackArgumentOfClass(Class cls) - : CallbackArgument() - , m_class(cls) - { - [m_class retain]; - } - -private: - virtual ~CallbackArgumentOfClass() - { - [m_class release]; - } - - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - JSGlobalContextRef contextRef = [context JSGlobalContextRef]; - - id object = tryUnwrapObjcObject(contextRef, argument); - if (object && [object isKindOfClass:m_class]) { - [invocation setArgument:&object atIndex:argumentNumber]; - return; - } - - if (JSValueIsNull(contextRef, argument) || JSValueIsUndefined(contextRef, argument)) { - object = nil; - [invocation setArgument:&object atIndex:argumentNumber]; - return; - } - - *exception = toRef(JSC::createTypeError(toJS(contextRef), "Argument does not match Objective-C Class")); - } - - Class m_class; -}; - -class CallbackArgumentNSNumber : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - id value = valueToNumber([context JSGlobalContextRef], argument, exception); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentNSString : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - id value = valueToString([context JSGlobalContextRef], argument, exception); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentNSDate : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - id value = valueToDate([context JSGlobalContextRef], argument, exception); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentNSArray : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - id value = valueToArray([context JSGlobalContextRef], argument, exception); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentNSDictionary : public CallbackArgument { - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef* exception) override - { - id value = valueToDictionary([context JSGlobalContextRef], argument, exception); - [invocation setArgument:&value atIndex:argumentNumber]; - } -}; - -class CallbackArgumentStruct : public CallbackArgument { -public: - CallbackArgumentStruct(NSInvocation *conversionInvocation, const char* encodedType) - : m_conversionInvocation(conversionInvocation) - , m_buffer(encodedType) - { - } - -private: - virtual void set(NSInvocation *invocation, NSInteger argumentNumber, JSContext *context, JSValueRef argument, JSValueRef*) override - { - JSValue *value = [JSValue valueWithJSValueRef:argument inContext:context]; - [m_conversionInvocation invokeWithTarget:value]; - [m_conversionInvocation getReturnValue:m_buffer]; - [invocation setArgument:m_buffer atIndex:argumentNumber]; - } - - RetainPtr<NSInvocation> m_conversionInvocation; - StructBuffer m_buffer; -}; - -class ArgumentTypeDelegate { -public: - typedef CallbackArgument* ResultType; - - template<typename T> - static ResultType typeInteger() - { - return new CallbackArgumentInteger<T>; - } - - template<typename T> - static ResultType typeDouble() - { - return new CallbackArgumentDouble<T>; - } - - static ResultType typeBool() - { - return new CallbackArgumentBoolean; - } - - static ResultType typeVoid() - { - RELEASE_ASSERT_NOT_REACHED(); - return 0; - } - - static ResultType typeId() - { - return new CallbackArgumentId; - } - - static ResultType typeOfClass(const char* begin, const char* end) - { - StringRange copy(begin, end); - Class cls = objc_getClass(copy); - if (!cls) - return 0; - - if (cls == [JSValue class]) - return new CallbackArgumentJSValue; - if (cls == [NSString class]) - return new CallbackArgumentNSString; - if (cls == [NSNumber class]) - return new CallbackArgumentNSNumber; - if (cls == [NSDate class]) - return new CallbackArgumentNSDate; - if (cls == [NSArray class]) - return new CallbackArgumentNSArray; - if (cls == [NSDictionary class]) - return new CallbackArgumentNSDictionary; - - return new CallbackArgumentOfClass(cls); - } - - static ResultType typeBlock(const char*, const char*) - { - return nil; - } - - static ResultType typeStruct(const char* begin, const char* end) - { - StringRange copy(begin, end); - if (NSInvocation *invocation = valueToTypeInvocationFor(copy)) - return new CallbackArgumentStruct(invocation, copy); - return 0; - } -}; - -class CallbackResult { -public: - virtual ~CallbackResult() - { - } - - virtual JSValueRef get(NSInvocation *, JSContext *, JSValueRef*) = 0; -}; - -class CallbackResultVoid : public CallbackResult { - virtual JSValueRef get(NSInvocation *, JSContext *context, JSValueRef*) override - { - return JSValueMakeUndefined([context JSGlobalContextRef]); - } -}; - -class CallbackResultId : public CallbackResult { - virtual JSValueRef get(NSInvocation *invocation, JSContext *context, JSValueRef*) override - { - id value; - [invocation getReturnValue:&value]; - return objectToValue(context, value); - } -}; - -template<typename T> -class CallbackResultNumeric : public CallbackResult { - virtual JSValueRef get(NSInvocation *invocation, JSContext *context, JSValueRef*) override - { - T value; - [invocation getReturnValue:&value]; - return JSValueMakeNumber([context JSGlobalContextRef], value); - } -}; - -class CallbackResultBoolean : public CallbackResult { - virtual JSValueRef get(NSInvocation *invocation, JSContext *context, JSValueRef*) override - { - bool value; - [invocation getReturnValue:&value]; - return JSValueMakeBoolean([context JSGlobalContextRef], value); - } -}; - -class CallbackResultStruct : public CallbackResult { -public: - CallbackResultStruct(NSInvocation *conversionInvocation, const char* encodedType) - : m_conversionInvocation(conversionInvocation) - , m_buffer(encodedType) - { - } - -private: - virtual JSValueRef get(NSInvocation *invocation, JSContext *context, JSValueRef*) override - { - [invocation getReturnValue:m_buffer]; - - [m_conversionInvocation setArgument:m_buffer atIndex:2]; - [m_conversionInvocation setArgument:&context atIndex:3]; - [m_conversionInvocation invokeWithTarget:[JSValue class]]; - - JSValue *value; - [m_conversionInvocation getReturnValue:&value]; - return valueInternalValue(value); - } - - RetainPtr<NSInvocation> m_conversionInvocation; - StructBuffer m_buffer; -}; - -class ResultTypeDelegate { -public: - typedef CallbackResult* ResultType; - - template<typename T> - static ResultType typeInteger() - { - return new CallbackResultNumeric<T>; - } - - template<typename T> - static ResultType typeDouble() - { - return new CallbackResultNumeric<T>; - } - - static ResultType typeBool() - { - return new CallbackResultBoolean; - } - - static ResultType typeVoid() - { - return new CallbackResultVoid; - } - - static ResultType typeId() - { - return new CallbackResultId(); - } - - static ResultType typeOfClass(const char*, const char*) - { - return new CallbackResultId(); - } - - static ResultType typeBlock(const char*, const char*) - { - return new CallbackResultId(); - } - - static ResultType typeStruct(const char* begin, const char* end) - { - StringRange copy(begin, end); - if (NSInvocation *invocation = typeToValueInvocationFor(copy)) - return new CallbackResultStruct(invocation, copy); - return 0; - } -}; - -enum CallbackType { - CallbackInstanceMethod, - CallbackClassMethod, - CallbackBlock -}; - -namespace JSC { - -class ObjCCallbackFunctionImpl { -public: - ObjCCallbackFunctionImpl(JSContext *context, NSInvocation *invocation, CallbackType type, Class instanceClass, PassOwnPtr<CallbackArgument> arguments, PassOwnPtr<CallbackResult> result) - : m_context(context) - , m_type(type) - , m_instanceClass([instanceClass retain]) - , m_invocation(invocation) - , m_arguments(arguments) - , m_result(result) - { - ASSERT(type != CallbackInstanceMethod || instanceClass); - } - - ~ObjCCallbackFunctionImpl() - { - if (m_type != CallbackInstanceMethod) - [[m_invocation.get() target] release]; - [m_instanceClass release]; - } - - JSValueRef call(JSContext *context, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception); - - JSContext *context() - { - return m_context.get(); - } - - void setContext(JSContext *context) - { - ASSERT(!m_context.get()); - m_context.set(context); - } - - id wrappedBlock() - { - return m_type == CallbackBlock ? [m_invocation target] : nil; - } - -private: - WeakContextRef m_context; - CallbackType m_type; - Class m_instanceClass; - RetainPtr<NSInvocation> m_invocation; - OwnPtr<CallbackArgument> m_arguments; - OwnPtr<CallbackResult> m_result; -}; - -static JSValueRef objCCallbackFunctionCallAsFunction(JSContextRef callerContext, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception) -{ - // Retake the API lock - we need this for a few reasons: - // (1) We don't want to support the C-API's confusing drops-locks-once policy - should only drop locks if we can do so recursively. - // (2) We're calling some JSC internals that require us to be on the 'inside' - e.g. createTypeError. - // (3) We need to be locked (per context would be fine) against conflicting usage of the ObjCCallbackFunction's NSInvocation. - JSC::APIEntryShim entryShim(toJS(callerContext)); - - ObjCCallbackFunction* callback = static_cast<ObjCCallbackFunction*>(toJS(function)); - ObjCCallbackFunctionImpl* impl = callback->impl(); - JSContext *context = impl->context(); - if (!context) { - context = [JSContext contextWithJSGlobalContextRef:toGlobalRef(toJS(callerContext)->lexicalGlobalObject()->globalExec())]; - impl->setContext(context); - } - - CallbackData callbackData; - JSValueRef result; - @autoreleasepool { - [context beginCallbackWithData:&callbackData thisValue:thisObject argumentCount:argumentCount arguments:arguments]; - result = impl->call(context, thisObject, argumentCount, arguments, exception); - if (context.exception) - *exception = valueInternalValue(context.exception); - [context endCallbackWithData:&callbackData]; - } - return result; -} - -const JSC::ClassInfo ObjCCallbackFunction::s_info = { "CallbackFunction", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(ObjCCallbackFunction) }; - -ObjCCallbackFunction::ObjCCallbackFunction(JSC::JSGlobalObject* globalObject, JSObjectCallAsFunctionCallback callback, PassOwnPtr<ObjCCallbackFunctionImpl> impl) - : Base(globalObject, globalObject->objcCallbackFunctionStructure(), callback) - , m_impl(impl) -{ -} - -ObjCCallbackFunction* ObjCCallbackFunction::create(JSC::ExecState* exec, JSC::JSGlobalObject* globalObject, const String& name, PassOwnPtr<ObjCCallbackFunctionImpl> impl) -{ - ObjCCallbackFunction* function = new (NotNull, allocateCell<ObjCCallbackFunction>(*exec->heap())) ObjCCallbackFunction(globalObject, objCCallbackFunctionCallAsFunction, impl); - function->finishCreation(exec->vm(), name); - return function; -} - -void ObjCCallbackFunction::destroy(JSCell* cell) -{ - static_cast<ObjCCallbackFunction*>(cell)->ObjCCallbackFunction::~ObjCCallbackFunction(); -} - -JSValueRef ObjCCallbackFunctionImpl::call(JSContext *context, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception) -{ - JSGlobalContextRef contextRef = [context JSGlobalContextRef]; - - size_t firstArgument; - switch (m_type) { - case CallbackInstanceMethod: { - id target = tryUnwrapObjcObject(contextRef, thisObject); - if (!target || ![target isKindOfClass:m_instanceClass]) { - *exception = toRef(JSC::createTypeError(toJS(contextRef), "self type check failed for Objective-C instance method")); - return JSValueMakeUndefined(contextRef); - } - [m_invocation setTarget:target]; - } - // fallthrough - firstArgument for CallbackInstanceMethod is also 2! - case CallbackClassMethod: - firstArgument = 2; - break; - case CallbackBlock: - firstArgument = 1; - } - - size_t argumentNumber = 0; - for (CallbackArgument* argument = m_arguments.get(); argument; argument = argument->m_next.get()) { - JSValueRef value = argumentNumber < argumentCount ? arguments[argumentNumber] : JSValueMakeUndefined(contextRef); - argument->set(m_invocation.get(), argumentNumber + firstArgument, context, value, exception); - if (*exception) - return JSValueMakeUndefined(contextRef); - ++argumentNumber; - } - - [m_invocation invoke]; - - return m_result->get(m_invocation.get(), context, exception); -} - -} // namespace JSC - -static bool blockSignatureContainsClass() -{ - static bool containsClass = ^{ - id block = ^(NSString *string){ return string; }; - return _Block_has_signature(block) && strstr(_Block_signature(block), "NSString"); - }(); - return containsClass; -} - -inline bool skipNumber(const char*& position) -{ - if (!isASCIIDigit(*position)) - return false; - while (isASCIIDigit(*++position)) { } - return true; -} - -static JSObjectRef objCCallbackFunctionForInvocation(JSContext *context, NSInvocation *invocation, CallbackType type, Class instanceClass, const char* signatureWithObjcClasses) -{ - const char* position = signatureWithObjcClasses; - - OwnPtr<CallbackResult> result = adoptPtr(parseObjCType<ResultTypeDelegate>(position)); - if (!result || !skipNumber(position)) - return nil; - - switch (type) { - case CallbackInstanceMethod: - case CallbackClassMethod: - // Methods are passed two implicit arguments - (id)self, and the selector. - if ('@' != *position++ || !skipNumber(position) || ':' != *position++ || !skipNumber(position)) - return nil; - break; - case CallbackBlock: - // Blocks are passed one implicit argument - the block, of type "@?". - if (('@' != *position++) || ('?' != *position++) || !skipNumber(position)) - return nil; - // Only allow arguments of type 'id' if the block signature contains the NS type information. - if ((!blockSignatureContainsClass() && strchr(position, '@'))) - return nil; - break; - } - - OwnPtr<CallbackArgument> arguments = 0; - OwnPtr<CallbackArgument>* nextArgument = &arguments; - unsigned argumentCount = 0; - while (*position) { - OwnPtr<CallbackArgument> argument = adoptPtr(parseObjCType<ArgumentTypeDelegate>(position)); - if (!argument || !skipNumber(position)) - return nil; - - *nextArgument = argument.release(); - nextArgument = &(*nextArgument)->m_next; - ++argumentCount; - } - - JSC::ExecState* exec = toJS([context JSGlobalContextRef]); - JSC::APIEntryShim shim(exec); - OwnPtr<JSC::ObjCCallbackFunctionImpl> impl = adoptPtr(new JSC::ObjCCallbackFunctionImpl(context, invocation, type, instanceClass, arguments.release(), result.release())); - // FIXME: Maybe we could support having the selector as the name of the function to make it a bit more user-friendly from the JS side? - return toRef(JSC::ObjCCallbackFunction::create(exec, exec->lexicalGlobalObject(), "", impl.release())); -} - -JSObjectRef objCCallbackFunctionForMethod(JSContext *context, Class cls, Protocol *protocol, BOOL isInstanceMethod, SEL sel, const char* types) -{ - NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[NSMethodSignature signatureWithObjCTypes:types]]; - [invocation setSelector:sel]; - if (!isInstanceMethod) - [invocation setTarget:cls]; - return objCCallbackFunctionForInvocation(context, invocation, isInstanceMethod ? CallbackInstanceMethod : CallbackClassMethod, isInstanceMethod ? cls : nil, _protocol_getMethodTypeEncoding(protocol, sel, YES, isInstanceMethod)); -} - -JSObjectRef objCCallbackFunctionForBlock(JSContext *context, id target) -{ - if (!_Block_has_signature(target)) - return 0; - const char* signature = _Block_signature(target); - NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[NSMethodSignature signatureWithObjCTypes:signature]]; - [invocation setTarget:[target copy]]; - return objCCallbackFunctionForInvocation(context, invocation, CallbackBlock, nil, signature); -} - -id tryUnwrapBlock(JSObjectRef object) -{ - if (!toJS(object)->inherits(&JSC::ObjCCallbackFunction::s_info)) - return nil; - return static_cast<JSC::ObjCCallbackFunction*>(toJS(object))->impl()->wrappedBlock(); -} - -#endif |