diff options
author | Steve Block <steveblock@google.com> | 2011-05-13 06:44:40 -0700 |
---|---|---|
committer | Android (Google) Code Review <android-gerrit@google.com> | 2011-05-13 06:44:40 -0700 |
commit | 08014c20784f3db5df3a89b73cce46037b77eb59 (patch) | |
tree | 47749210d31e19e6e2f64036fa8fae2ad693476f /Source/JavaScriptCore/runtime/StringConstructor.cpp | |
parent | 860220379e56aeb66424861ad602b07ee22b4055 (diff) | |
parent | 4c3661f7918f8b3f139f824efb7855bedccb4c94 (diff) | |
download | external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.zip external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.tar.gz external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.tar.bz2 |
Merge changes Ide388898,Ic49f367c,I1158a808,Iacb6ca5d,I2100dd3a,I5c1abe54,Ib0ef9902,I31dbc523,I570314b3
* changes:
Merge WebKit at r75315: Update WebKit version
Merge WebKit at r75315: Add FrameLoaderClient PageCache stubs
Merge WebKit at r75315: Stub out AXObjectCache::remove()
Merge WebKit at r75315: Fix ImageBuffer
Merge WebKit at r75315: Fix PluginData::initPlugins()
Merge WebKit at r75315: Fix conflicts
Merge WebKit at r75315: Fix Makefiles
Merge WebKit at r75315: Move Android-specific WebCore files to Source
Merge WebKit at r75315: Initial merge by git.
Diffstat (limited to 'Source/JavaScriptCore/runtime/StringConstructor.cpp')
-rw-r--r-- | Source/JavaScriptCore/runtime/StringConstructor.cpp | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/StringConstructor.cpp b/Source/JavaScriptCore/runtime/StringConstructor.cpp new file mode 100644 index 0000000..101650c --- /dev/null +++ b/Source/JavaScriptCore/runtime/StringConstructor.cpp @@ -0,0 +1,96 @@ +/* + * Copyright (C) 1999-2001 Harri Porten (porten@kde.org) + * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#include "config.h" +#include "StringConstructor.h" + +#include "Executable.h" +#include "JITCode.h" +#include "JSFunction.h" +#include "JSGlobalObject.h" +#include "PrototypeFunction.h" +#include "StringPrototype.h" + +namespace JSC { + +static NEVER_INLINE JSValue stringFromCharCodeSlowCase(ExecState* exec) +{ + unsigned length = exec->argumentCount(); + UChar* buf; + PassRefPtr<StringImpl> impl = StringImpl::createUninitialized(length, buf); + for (unsigned i = 0; i < length; ++i) + buf[i] = static_cast<UChar>(exec->argument(i).toUInt32(exec)); + return jsString(exec, impl); +} + +static EncodedJSValue JSC_HOST_CALL stringFromCharCode(ExecState* exec) +{ + if (LIKELY(exec->argumentCount() == 1)) + return JSValue::encode(jsSingleCharacterString(exec, exec->argument(0).toUInt32(exec))); + return JSValue::encode(stringFromCharCodeSlowCase(exec)); +} + +ASSERT_CLASS_FITS_IN_CELL(StringConstructor); + +StringConstructor::StringConstructor(ExecState* exec, JSGlobalObject* globalObject, NonNullPassRefPtr<Structure> structure, Structure* prototypeFunctionStructure, StringPrototype* stringPrototype) + : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, stringPrototype->classInfo()->className)) +{ + // ECMA 15.5.3.1 String.prototype + putDirectWithoutTransition(exec->propertyNames().prototype, stringPrototype, ReadOnly | DontEnum | DontDelete); + + // ECMA 15.5.3.2 fromCharCode() +#if ENABLE(JIT) && ENABLE(JIT_OPTIMIZE_NATIVE_CALL) + putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 1, exec->propertyNames().fromCharCode, exec->globalData().getHostFunction(stringFromCharCode, fromCharCodeThunkGenerator)), DontEnum); +#else + putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, globalObject, prototypeFunctionStructure, 1, exec->propertyNames().fromCharCode, stringFromCharCode), DontEnum); +#endif + // no. of arguments for constructor + putDirectWithoutTransition(exec->propertyNames().length, jsNumber(1), ReadOnly | DontEnum | DontDelete); +} + +// ECMA 15.5.2 +static EncodedJSValue JSC_HOST_CALL constructWithStringConstructor(ExecState* exec) +{ + if (!exec->argumentCount()) + return JSValue::encode(new (exec) StringObject(exec, exec->lexicalGlobalObject()->stringObjectStructure())); + return JSValue::encode(new (exec) StringObject(exec, exec->lexicalGlobalObject()->stringObjectStructure(), exec->argument(0).toString(exec))); +} + +ConstructType StringConstructor::getConstructData(ConstructData& constructData) +{ + constructData.native.function = constructWithStringConstructor; + return ConstructTypeHost; +} + +// ECMA 15.5.1 +static EncodedJSValue JSC_HOST_CALL callStringConstructor(ExecState* exec) +{ + if (!exec->argumentCount()) + return JSValue::encode(jsEmptyString(exec)); + return JSValue::encode(jsString(exec, exec->argument(0).toString(exec))); +} + +CallType StringConstructor::getCallData(CallData& callData) +{ + callData.native.function = callStringConstructor; + return CallTypeHost; +} + +} // namespace JSC |