CurrentThisInsideBlockGetterTest.mm   [plain text]

/*
* 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/

#import "config.h"
#import "CurrentThisInsideBlockGetterTest.h"

#if JSC_OBJC_API_ENABLED

#import <Foundation/Foundation.h>
#import <JavaScriptCore/JavaScriptCore.h>

static JSObjectRef CallAsConstructor(JSContextRef ctx, JSObjectRef constructor, size_t, const JSValueRef[], JSValueRef*)
{
JSObjectRef newObjectRef = NULL;
NSMutableDictionary *constructorPrivateProperties = (__bridge NSMutableDictionary *)(JSObjectGetPrivate(constructor));
NSDictionary *constructorDescriptor = constructorPrivateProperties[@"constructorDescriptor"];
newObjectRef = JSObjectMake(ctx, NULL, NULL);
NSDictionary *objectProperties = constructorDescriptor[@"objectProperties"];

if (objectProperties) {
JSValue *newObject = [JSValue valueWithJSValueRef:newObjectRef inContext:[JSContext contextWithJSGlobalContextRef:JSContextGetGlobalContext(ctx)]];
for (NSString *objectProperty in objectProperties) {
[newObject defineProperty:objectProperty descriptor:objectProperties[objectProperty]];
}
}

return newObjectRef;
}

static void ConstructorFinalize(JSObjectRef object)
{
NSMutableDictionary *privateProperties = (__bridge NSMutableDictionary *)(JSObjectGetPrivate(object));
CFBridgingRelease((__bridge CFTypeRef)(privateProperties));
JSObjectSetPrivate(object, NULL);
}

static JSClassRef ConstructorClass(void)
{
static JSClassRef constructorClass = NULL;

if (constructorClass == NULL) {
JSClassDefinition classDefinition = kJSClassDefinitionEmpty;
classDefinition.className = "Constructor";
classDefinition.callAsConstructor = CallAsConstructor;
classDefinition.finalize = ConstructorFinalize;
constructorClass = JSClassCreate(&classDefinition);
}

return constructorClass;
}

@interface JSValue (ConstructorCreation)

+ (JSValue *)valueWithConstructorDescriptor:(NSDictionary *)constructorDescriptor inContext:(JSContext *)context;

@end

@implementation JSValue (ConstructorCreation)

+ (JSValue *)valueWithConstructorDescriptor:(id)constructorDescriptor inContext:(JSContext *)context
{
NSMutableDictionary *privateProperties = [@{ @"constructorDescriptor" : constructorDescriptor } mutableCopy];
JSGlobalContextRef ctx = [context JSGlobalContextRef];
JSObjectRef constructorRef = JSObjectMake(ctx, ConstructorClass(), const_cast<void*>(CFBridgingRetain(privateProperties)));
JSValue *constructor = [JSValue valueWithJSValueRef:constructorRef inContext:context];
return constructor;
}

@end

@interface JSContext (ConstructorCreation)

- (JSValue *)valueWithConstructorDescriptor:(NSDictionary *)constructorDescriptor;

@end

@implementation JSContext (ConstructorCreation)

- (JSValue *)valueWithConstructorDescriptor:(id)constructorDescriptor
{
return [JSValue valueWithConstructorDescriptor:constructorDescriptor inContext:self];
}

@end

void currentThisInsideBlockGetterTest()
{
@autoreleasepool {
JSContext *context = [[JSContext alloc] init];

JSValue *myConstructor = [context valueWithConstructorDescriptor:@{
@"objectProperties" : @{
@"currentThis" : @{ JSPropertyDescriptorGetKey : ^{ return JSContext.currentThis; } },
},
}];

JSValue *myObj1 = [myConstructor constructWithArguments:nil];
NSLog(@"myObj1.currentThis: %@", myObj1[@"currentThis"]);
JSValue *myObj2 = [myConstructor constructWithArguments:@[ @"bar" ]];
NSLog(@"myObj2.currentThis: %@", myObj2[@"currentThis"]);
}
}

#endif // JSC_OBJC_API_ENABLED