testapi.c

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

{
    UNUSED_PARAM(context);

    if (TestInitializeFinalize) {
        ASSERT((void*)1 == JSObjectGetPrivate(object));
        JSObjectSetPrivate(object, (void*)2);
    }
}

static unsigned Base_didFinalize;
static void Base_finalize(JSObjectRef object)
{
    UNUSED_PARAM(object);
    if (TestInitializeFinalize) {
        ASSERT((void*)4 == JSObjectGetPrivate(object));
        Base_didFinalize = true;
    }
}

static JSClassRef Base_class(JSContextRef context)
{
    UNUSED_PARAM(context);

    static JSClassRef jsClass;
    if (!jsClass) {
        JSClassDefinition definition = kJSClassDefinitionEmpty;
        definition.staticValues = Base_staticValues;
        definition.staticFunctions = Base_staticFunctions;
        definition.initialize = Base_initialize;
        definition.finalize = Base_finalize;
        jsClass = JSClassCreate(&definition);
    }
    return jsClass;
}

static JSValueRef Derived_get(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
{
    UNUSED_PARAM(object);
    UNUSED_PARAM(propertyName);
    UNUSED_PARAM(exception);

    return JSValueMakeNumber(ctx, 2); // distinguish base get form derived get
}

static bool Derived_set(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value, JSValueRef* exception)
{
    UNUSED_PARAM(ctx);
    UNUSED_PARAM(object);
    UNUSED_PARAM(propertyName);
    UNUSED_PARAM(value);

    *exception = JSValueMakeNumber(ctx, 2); // distinguish base set from derived set
    return true;
}

static JSValueRef Derived_callAsFunction(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
{
    UNUSED_PARAM(function);
    UNUSED_PARAM(thisObject);
    UNUSED_PARAM(argumentCount);
    UNUSED_PARAM(arguments);
    UNUSED_PARAM(exception);
    
    return JSValueMakeNumber(ctx, 2); // distinguish base call from derived call
}

static JSStaticFunction Derived_staticFunctions[] = {
    { "protoOnly", Derived_callAsFunction, kJSPropertyAttributeNone },
    { "protoDup", NULL, kJSPropertyAttributeNone },
    { "baseProtoDup", Derived_callAsFunction, kJSPropertyAttributeNone },
    { 0, 0, 0 }
};

static JSStaticValue Derived_staticValues[] = {
    { "derivedOnly", Derived_get, Derived_set, kJSPropertyAttributeNone },
    { "protoDup", Derived_get, Derived_set, kJSPropertyAttributeNone },
    { "baseDup", Derived_get, Derived_set, kJSPropertyAttributeNone },
    { 0, 0, 0, 0 }
};

static void Derived_initialize(JSContextRef context, JSObjectRef object)
{
    UNUSED_PARAM(context);

    if (TestInitializeFinalize) {
        ASSERT((void*)2 == JSObjectGetPrivate(object));
        JSObjectSetPrivate(object, (void*)3);
    }
}

static void Derived_finalize(JSObjectRef object)
{
    if (TestInitializeFinalize) {
        ASSERT((void*)3 == JSObjectGetPrivate(object));
        JSObjectSetPrivate(object, (void*)4);
    }
}

static JSClassRef Derived_class(JSContextRef context)
{
    static JSClassRef jsClass;
    if (!jsClass) {
        JSClassDefinition definition = kJSClassDefinitionEmpty;
        definition.parentClass = Base_class(context);
        definition.staticValues = Derived_staticValues;
        definition.staticFunctions = Derived_staticFunctions;
        definition.initialize = Derived_initialize;
        definition.finalize = Derived_finalize;
        jsClass = JSClassCreate(&definition);
    }
    return jsClass;
}

static JSValueRef print_callAsFunction(JSContextRef context, JSObjectRef functionObject, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
{
    UNUSED_PARAM(functionObject);
    UNUSED_PARAM(thisObject);
    UNUSED_PARAM(exception);
    
    if (argumentCount > 0) {
        JSStringRef string = JSValueToStringCopy(context, arguments[0], NULL);
        size_t sizeUTF8 = JSStringGetMaximumUTF8CStringSize(string);
        char* stringUTF8 = (char*)malloc(sizeUTF8);
        JSStringGetUTF8CString(string, stringUTF8, sizeUTF8);
        printf("%s\n", stringUTF8);
        free(stringUTF8);
        JSStringRelease(string);
    }
    
    return JSValueMakeUndefined(context);
}

static JSObjectRef myConstructor_callAsConstructor(JSContextRef context, JSObjectRef constructorObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
{
    UNUSED_PARAM(constructorObject);
    UNUSED_PARAM(exception);
    
    JSObjectRef result = JSObjectMake(context, NULL, NULL);
    if (argumentCount > 0) {
        JSStringRef value = JSStringCreateWithUTF8CString("value");
        JSObjectSetProperty(context, result, value, arguments[0], kJSPropertyAttributeNone, NULL);
        JSStringRelease(value);
    }
    
    return result;
}


static void globalObject_initialize(JSContextRef context, JSObjectRef object)
{
    UNUSED_PARAM(object);
    // Ensure that an execution context is passed in
    ASSERT(context);

    // Ensure that the global object is set to the object that we were passed
    JSObjectRef globalObject = JSContextGetGlobalObject(context);
    ASSERT(globalObject);
    ASSERT(object == globalObject);

    // Ensure that the standard global properties have been set on the global object
    JSStringRef array = JSStringCreateWithUTF8CString("Array");
    JSObjectRef arrayConstructor = JSValueToObject(context, JSObjectGetProperty(context, globalObject, array, NULL), NULL);
    JSStringRelease(array);

    UNUSED_PARAM(arrayConstructor);
    ASSERT(arrayConstructor);
}

static JSValueRef globalObject_get(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
{
    UNUSED_PARAM(object);
    UNUSED_PARAM(propertyName);
    UNUSED_PARAM(exception);

    return JSValueMakeNumber(ctx, 3);
}

static bool globalObject_set(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value, JSValueRef* exception)
{
    UNUSED_PARAM(object);
    UNUSED_PARAM(propertyName);
    UNUSED_PARAM(value);

    *exception = JSValueMakeNumber(ctx, 3);
    return true;
}

static JSValueRef globalObject_call(JSContextRef ctx, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
{
    UNUSED_PARAM(function);
    UNUSED_PARAM(thisObject);
    UNUSED_PARAM(argumentCount);
    UNUSED_PARAM(arguments);
    UNUSED_PARAM(exception);

    return JSValueMakeNumber(ctx, 3);
}

static JSStaticValue globalObject_staticValues[] = {
    { "globalStaticValue", globalObject_get, globalObject_set, kJSPropertyAttributeNone },
    { 0, 0, 0, 0 }
};

static JSStaticFunction globalObject_staticFunctions[] = {
    { "globalStaticFunction", globalObject_call, kJSPropertyAttributeNone },
    { 0, 0, 0 }
};

static char* createStringWithContentsOfFile(const char* fileName);

static void testInitializeFinalize()
{
    JSObjectRef o = JSObjectMake(context, Derived_class(context), (void*)1);
    UNUSED_PARAM(o);
    ASSERT(JSObjectGetPrivate(o) == (void*)3);
}

int main(int argc, char* argv[])
{
    const char *scriptPath = "testapi.js";
    if (argc > 1) {
        scriptPath = argv[1];
    }
    
    // Test garbage collection with a fresh context
    context = JSGlobalContextCreateInGroup(NULL, NULL);
    TestInitializeFinalize = true;
    testInitializeFinalize();
    JSGlobalContextRelease(context);
    TestInitializeFinalize = false;

    ASSERT(Base_didFinalize);

    JSClassDefinition globalObjectClassDefinition = kJSClassDefinitionEmpty;
    globalObjectClassDefinition.initialize = globalObject_initialize;
    globalObjectClassDefinition.staticValues = globalObject_staticValues;
    globalObjectClassDefinition.staticFunctions = globalObject_staticFunctions;
    globalObjectClassDefinition.attributes = kJSClassAttributeNoAutomaticPrototype;
    JSClassRef globalObjectClass = JSClassCreate(&globalObjectClassDefinition);
    context = JSGlobalContextCreateInGroup(NULL, globalObjectClass);

    JSGlobalContextRetain(context);
    JSGlobalContextRelease(context);
    
    JSReportExtraMemoryCost(context, 0);
    JSReportExtraMemoryCost(context, 1);
    JSReportExtraMemoryCost(context, 1024);

    JSObjectRef globalObject = JSContextGetGlobalObject(context);
    ASSERT(JSValueIsObject(context, globalObject));
    
    JSValueRef jsUndefined = JSValueMakeUndefined(context);
    JSValueRef jsNull = JSValueMakeNull(context);
    JSValueRef jsTrue = JSValueMakeBoolean(context, true);
    JSValueRef jsFalse = JSValueMakeBoolean(context, false);
    JSValueRef jsZero = JSValueMakeNumber(context, 0);
    JSValueRef jsOne = JSValueMakeNumber(context, 1);
    JSValueRef jsOneThird = JSValueMakeNumber(context, 1.0 / 3.0);
    JSObjectRef jsObjectNoProto = JSObjectMake(context, NULL, NULL);
    JSObjectSetPrototype(context, jsObjectNoProto, JSValueMakeNull(context));

    // FIXME: test funny utf8 characters
    JSStringRef jsEmptyIString = JSStringCreateWithUTF8CString("");
    JSValueRef jsEmptyString = JSValueMakeString(context, jsEmptyIString);
    
    JSStringRef jsOneIString = JSStringCreateWithUTF8CString("1");
    JSValueRef jsOneString = JSValueMakeString(context, jsOneIString);

    UniChar singleUniChar = 65; // Capital A
    CFMutableStringRef cfString = 
        CFStringCreateMutableWithExternalCharactersNoCopy(kCFAllocatorDefault,
                                                          &singleUniChar,
                                                          1,
                                                          1,
                                                          kCFAllocatorNull);

    JSStringRef jsCFIString = JSStringCreateWithCFString(cfString);
    JSValueRef jsCFString = JSValueMakeString(context, jsCFIString);
    
    CFStringRef cfEmptyString = CFStringCreateWithCString(kCFAllocatorDefault, "", kCFStringEncodingUTF8);
    
    JSStringRef jsCFEmptyIString = JSStringCreateWithCFString(cfEmptyString);
    JSValueRef jsCFEmptyString = JSValueMakeString(context, jsCFEmptyIString);

    CFIndex cfStringLength = CFStringGetLength(cfString);
    UniChar* buffer = (UniChar*)malloc(cfStringLength * sizeof(UniChar));
    CFStringGetCharacters(cfString, 
                          CFRangeMake(0, cfStringLength), 
                          buffer);
    JSStringRef jsCFIStringWithCharacters = JSStringCreateWithCharacters((JSChar*)buffer, cfStringLength);
    JSValueRef jsCFStringWithCharacters = JSValueMakeString(context, jsCFIStringWithCharacters);
    
    JSStringRef jsCFEmptyIStringWithCharacters = JSStringCreateWithCharacters((JSChar*)buffer, CFStringGetLength(cfEmptyString));
    free(buffer);
    JSValueRef jsCFEmptyStringWithCharacters = JSValueMakeString(context, jsCFEmptyIStringWithCharacters);

    ASSERT(JSValueGetType(context, jsUndefined) == kJSTypeUndefined);
    ASSERT(JSValueGetType(context, jsNull) == kJSTypeNull);
    ASSERT(JSValueGetType(context, jsTrue) == kJSTypeBoolean);
    ASSERT(JSValueGetType(context, jsFalse) == kJSTypeBoolean);
    ASSERT(JSValueGetType(context, jsZero) == kJSTypeNumber);
    ASSERT(JSValueGetType(context, jsOne) == kJSTypeNumber);
    ASSERT(JSValueGetType(context, jsOneThird) == kJSTypeNumber);
    ASSERT(JSValueGetType(context, jsEmptyString) == kJSTypeString);
    ASSERT(JSValueGetType(context, jsOneString) == kJSTypeString);
    ASSERT(JSValueGetType(context, jsCFString) == kJSTypeString);
    ASSERT(JSValueGetType(context, jsCFStringWithCharacters) == kJSTypeString);
    ASSERT(JSValueGetType(context, jsCFEmptyString) == kJSTypeString);
    ASSERT(JSValueGetType(context, jsCFEmptyStringWithCharacters) == kJSTypeString);

    JSObjectRef myObject = JSObjectMake(context, MyObject_class(context), NULL);
    JSStringRef myObjectIString = JSStringCreateWithUTF8CString("MyObject");
    JSObjectSetProperty(context, globalObject, myObjectIString, myObject, kJSPropertyAttributeNone, NULL);
    JSStringRelease(myObjectIString);
    
    JSValueRef exception;

    // Conversions that throw exceptions
    exception = NULL;
    ASSERT(NULL == JSValueToObject(context, jsNull, &exception));
    ASSERT(exception);
    
    exception = NULL;
    // FIXME <rdar://4668451> - On i386 the isnan(double) macro tries to map to the isnan(float) function,
    // causing a build break with -Wshorten-64-to-32 enabled.  The issue is known by the appropriate team.
    // After that's resolved, we can remove these casts
    ASSERT(isnan((float)JSValueToNumber(context, jsObjectNoProto, &exception)));
    ASSERT(exception);

    exception = NULL;
    ASSERT(!JSValueToStringCopy(context, jsObjectNoProto, &exception));
    ASSERT(exception);
    
    ASSERT(JSValueToBoolean(context, myObject));
    
    exception = NULL;
    ASSERT(!JSValueIsEqual(context, jsObjectNoProto, JSValueMakeNumber(context, 1), &exception));
    ASSERT(exception);
    
    exception = NULL;
    JSObjectGetPropertyAtIndex(context, myObject, 0, &exception);
    ASSERT(1 == JSValueToNumber(context, exception, NULL));