/* * 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 COMPUTER, 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 COMPUTER, 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 "APIShims.h" #include "JSAPIWrapperObject.h" #include "JSCJSValue.h" #include "JSCallbackObject.h" #include "JSGlobalObject.h" #include "JSONObject.h" #include "JSString.h" #include "LiteralParser.h" #include "Operations.h" #include "Protect.h" #include #include #include #include // for std::min #if PLATFORM(MAC) #include #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") inherits(JSCallbackObject::info())) return jsCast*>(o)->inherits(jsClass); if (o->inherits(JSCallbackObject::info())) return jsCast*>(o)->inherits(jsClass); #if JSC_OBJC_API_ENABLED if (o->inherits(JSCallbackObject::info())) return jsCast*>(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); APIEntryShim entryShim(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()) { if (exception) *exception = toRef(exec, exec->exception()); exec->clearException(); } return result; } bool JSValueIsStrictEqual(JSContextRef ctx, JSValueRef a, JSValueRef b) { if (!ctx) { ASSERT_NOT_REACHED(); return false; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(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); APIEntryShim entryShim(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()) { if (exception) *exception = toRef(exec, exec->exception()); exec->clearException(); } return result; } JSValueRef JSValueMakeUndefined(JSContextRef ctx) { if (!ctx) { ASSERT_NOT_REACHED(); return 0; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(exec); return toRef(exec, jsUndefined()); } JSValueRef JSValueMakeNull(JSContextRef ctx) { if (!ctx) { ASSERT_NOT_REACHED(); return 0; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(exec); return toRef(exec, jsNull()); } JSValueRef JSValueMakeBoolean(JSContextRef ctx, bool value) { if (!ctx) { ASSERT_NOT_REACHED(); return 0; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(exec); return toRef(exec, jsBoolean(value)); } JSValueRef JSValueMakeNumber(JSContextRef ctx, double value) { if (!ctx) { ASSERT_NOT_REACHED(); return 0; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(exec); // Our JSValue representation relies on a standard bit pattern for NaN. NaNs // generated internally to JavaScriptCore naturally have that representation, // but an external NaN might not. if (std::isnan(value)) value = QNaN; return toRef(exec, jsNumber(value)); } JSValueRef JSValueMakeString(JSContextRef ctx, JSStringRef string) { if (!ctx) { ASSERT_NOT_REACHED(); return 0; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(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); APIEntryShim entryShim(exec); String str = string->string(); unsigned length = str.length(); if (length && str.is8Bit()) { LiteralParser parser(exec, str.characters8(), length, StrictJSON); return toRef(exec, parser.tryLiteralParse()); } LiteralParser parser(exec, str.characters(), 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); APIEntryShim entryShim(exec); JSValue value = toJS(exec, apiValue); String result = JSONStringify(exec, value, indent); if (exception) *exception = 0; if (exec->hadException()) { if (exception) *exception = toRef(exec, exec->exception()); exec->clearException(); return 0; } return OpaqueJSString::create(result).leakRef(); } bool JSValueToBoolean(JSContextRef ctx, JSValueRef value) { if (!ctx) { ASSERT_NOT_REACHED(); return false; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(exec); JSValue jsValue = toJS(exec, value); return jsValue.toBoolean(exec); } double JSValueToNumber(JSContextRef ctx, JSValueRef value, JSValueRef* exception) { if (!ctx) { ASSERT_NOT_REACHED(); return QNaN; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(exec); JSValue jsValue = toJS(exec, value); double number = jsValue.toNumber(exec); if (exec->hadException()) { if (exception) *exception = toRef(exec, exec->exception()); exec->clearException(); number = QNaN; } return number; } JSStringRef JSValueToStringCopy(JSContextRef ctx, JSValueRef value, JSValueRef* exception) { if (!ctx) { ASSERT_NOT_REACHED(); return 0; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(exec); JSValue jsValue = toJS(exec, value); RefPtr stringRef(OpaqueJSString::create(jsValue.toString(exec)->value(exec))); if (exec->hadException()) { if (exception) *exception = toRef(exec, exec->exception()); exec->clearException(); 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); APIEntryShim entryShim(exec); JSValue jsValue = toJS(exec, value); JSObjectRef objectRef = toRef(jsValue.toObject(exec)); if (exec->hadException()) { if (exception) *exception = toRef(exec, exec->exception()); exec->clearException(); objectRef = 0; } return objectRef; } void JSValueProtect(JSContextRef ctx, JSValueRef value) { if (!ctx) { ASSERT_NOT_REACHED(); return; } ExecState* exec = toJS(ctx); APIEntryShim entryShim(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); APIEntryShim entryShim(exec); JSValue jsValue = toJSForGC(exec, value); gcUnprotect(jsValue); }