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/*
* Copyright (C) 2006, 2007 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"
#include "JSValueRef.h"
#include "APICast.h"
#include "JSAPIWrapperObject.h"
#include "JSCJSValue.h"
#include "JSCallbackObject.h"
#include "JSGlobalObject.h"
#include "JSONObject.h"
#include "JSString.h"
#include "LiteralParser.h"
#include "JSCInlines.h"
#include "Protect.h"
#include <wtf/Assertions.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
#include <algorithm> // for std::min
#if PLATFORM(MAC)
#include <mach-o/dyld.h>
#endif
#if ENABLE(REMOTE_INSPECTOR)
#include "JSGlobalObjectInspectorController.h"
#endif
using namespace JSC;
#if PLATFORM(MAC)
static bool evernoteHackNeeded()
{
static const int32_t webkitLastVersionWithEvernoteHack = 35133959;
static bool hackNeeded = CFEqual(CFBundleGetIdentifier(CFBundleGetMainBundle()), CFSTR("com.evernote.Evernote"))
&& NSVersionOfLinkTimeLibrary("JavaScriptCore") <= webkitLastVersionWithEvernoteHack;
return hackNeeded;
}
#endif
::JSType JSValueGetType(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return kJSTypeUndefined;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
if (jsValue.isUndefined())
return kJSTypeUndefined;
if (jsValue.isNull())
return kJSTypeNull;
if (jsValue.isBoolean())
return kJSTypeBoolean;
if (jsValue.isNumber())
return kJSTypeNumber;
if (jsValue.isString())
return kJSTypeString;
ASSERT(jsValue.isObject());
return kJSTypeObject;
}
bool JSValueIsUndefined(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isUndefined();
}
bool JSValueIsNull(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isNull();
}
bool JSValueIsBoolean(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isBoolean();
}
bool JSValueIsNumber(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isNumber();
}
bool JSValueIsString(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isString();
}
bool JSValueIsObject(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.isObject();
}
bool JSValueIsObjectOfClass(JSContextRef ctx, JSValueRef value, JSClassRef jsClass)
{
if (!ctx || !jsClass) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
if (JSObject* o = jsValue.getObject()) {
if (o->inherits(JSProxy::info()))
o = jsCast<JSProxy*>(o)->target();
if (o->inherits(JSCallbackObject<JSGlobalObject>::info()))
return jsCast<JSCallbackObject<JSGlobalObject>*>(o)->inherits(jsClass);
if (o->inherits(JSCallbackObject<JSDestructibleObject>::info()))
return jsCast<JSCallbackObject<JSDestructibleObject>*>(o)->inherits(jsClass);
#if JSC_OBJC_API_ENABLED
if (o->inherits(JSCallbackObject<JSAPIWrapperObject>::info()))
return jsCast<JSCallbackObject<JSAPIWrapperObject>*>(o)->inherits(jsClass);
#endif
}
return false;
}
bool JSValueIsEqual(JSContextRef ctx, JSValueRef a, JSValueRef b, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsA = toJS(exec, a);
JSValue jsB = toJS(exec, b);
bool result = JSValue::equal(exec, jsA, jsB); // false if an exception is thrown
if (exec->hadException()) {
JSValue exceptionValue = exec->exception();
if (exception)
*exception = toRef(exec, exceptionValue);
exec->clearException();
#if ENABLE(REMOTE_INSPECTOR)
exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exceptionValue);
#endif
}
return result;
}
bool JSValueIsStrictEqual(JSContextRef ctx, JSValueRef a, JSValueRef b)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsA = toJS(exec, a);
JSValue jsB = toJS(exec, b);
return JSValue::strictEqual(exec, jsA, jsB);
}
bool JSValueIsInstanceOfConstructor(JSContextRef ctx, JSValueRef value, JSObjectRef constructor, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
JSObject* jsConstructor = toJS(constructor);
if (!jsConstructor->structure()->typeInfo().implementsHasInstance())
return false;
bool result = jsConstructor->hasInstance(exec, jsValue); // false if an exception is thrown
if (exec->hadException()) {
JSValue exceptionValue = exec->exception();
if (exception)
*exception = toRef(exec, exceptionValue);
exec->clearException();
#if ENABLE(REMOTE_INSPECTOR)
exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exceptionValue);
#endif
}
return result;
}
JSValueRef JSValueMakeUndefined(JSContextRef ctx)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
return toRef(exec, jsUndefined());
}
JSValueRef JSValueMakeNull(JSContextRef ctx)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
return toRef(exec, jsNull());
}
JSValueRef JSValueMakeBoolean(JSContextRef ctx, bool value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
return toRef(exec, jsBoolean(value));
}
JSValueRef JSValueMakeNumber(JSContextRef ctx, double value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
return toRef(exec, jsNumber(purifyNaN(value)));
}
JSValueRef JSValueMakeString(JSContextRef ctx, JSStringRef string)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
return toRef(exec, jsString(exec, string->string()));
}
JSValueRef JSValueMakeFromJSONString(JSContextRef ctx, JSStringRef string)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
String str = string->string();
unsigned length = str.length();
if (!length || str.is8Bit()) {
LiteralParser<LChar> parser(exec, str.characters8(), length, StrictJSON);
return toRef(exec, parser.tryLiteralParse());
}
LiteralParser<UChar> parser(exec, str.characters16(), length, StrictJSON);
return toRef(exec, parser.tryLiteralParse());
}
JSStringRef JSValueCreateJSONString(JSContextRef ctx, JSValueRef apiValue, unsigned indent, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue value = toJS(exec, apiValue);
String result = JSONStringify(exec, value, indent);
if (exception)
*exception = 0;
if (exec->hadException()) {
JSValue exceptionValue = exec->exception();
if (exception)
*exception = toRef(exec, exceptionValue);
exec->clearException();
#if ENABLE(REMOTE_INSPECTOR)
exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exceptionValue);
#endif
return 0;
}
return OpaqueJSString::create(result).leakRef();
}
bool JSValueToBoolean(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return false;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
return jsValue.toBoolean(exec);
}
double JSValueToNumber(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return PNaN;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
double number = jsValue.toNumber(exec);
if (exec->hadException()) {
JSValue exceptionValue = exec->exception();
if (exception)
*exception = toRef(exec, exceptionValue);
exec->clearException();
#if ENABLE(REMOTE_INSPECTOR)
exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exceptionValue);
#endif
number = PNaN;
}
return number;
}
JSStringRef JSValueToStringCopy(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
RefPtr<OpaqueJSString> stringRef(OpaqueJSString::create(jsValue.toString(exec)->value(exec)));
if (exec->hadException()) {
JSValue exceptionValue = exec->exception();
if (exception)
*exception = toRef(exec, exceptionValue);
exec->clearException();
#if ENABLE(REMOTE_INSPECTOR)
exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exceptionValue);
#endif
stringRef.clear();
}
return stringRef.release().leakRef();
}
JSObjectRef JSValueToObject(JSContextRef ctx, JSValueRef value, JSValueRef* exception)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return 0;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJS(exec, value);
JSObjectRef objectRef = toRef(jsValue.toObject(exec));
if (exec->hadException()) {
JSValue exceptionValue = exec->exception();
if (exception)
*exception = toRef(exec, exceptionValue);
exec->clearException();
#if ENABLE(REMOTE_INSPECTOR)
exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exceptionValue);
#endif
objectRef = 0;
}
return objectRef;
}
void JSValueProtect(JSContextRef ctx, JSValueRef value)
{
if (!ctx) {
ASSERT_NOT_REACHED();
return;
}
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJSForGC(exec, value);
gcProtect(jsValue);
}
void JSValueUnprotect(JSContextRef ctx, JSValueRef value)
{
#if PLATFORM(MAC)
if ((!value || !ctx) && evernoteHackNeeded())
return;
#endif
ExecState* exec = toJS(ctx);
JSLockHolder locker(exec);
JSValue jsValue = toJSForGC(exec, value);
gcUnprotect(jsValue);
}