/* | |
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org) | |
* Copyright (C) 2003, 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 "FunctionConstructor.h" | |
#include "Debugger.h" | |
#include "FunctionPrototype.h" | |
#include "JSFunction.h" | |
#include "JSGlobalObject.h" | |
#include "JSString.h" | |
#include "Lexer.h" | |
#include "Nodes.h" | |
#include "Parser.h" | |
#include "StringBuilder.h" | |
namespace JSC { | |
ASSERT_CLASS_FITS_IN_CELL(FunctionConstructor); | |
FunctionConstructor::FunctionConstructor(ExecState* exec, NonNullPassRefPtr<Structure> structure, FunctionPrototype* functionPrototype) | |
: InternalFunction(&exec->globalData(), structure, Identifier(exec, functionPrototype->classInfo()->className)) | |
{ | |
putDirectWithoutTransition(exec->propertyNames().prototype, functionPrototype, DontEnum | DontDelete | ReadOnly); | |
// Number of arguments for constructor | |
putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontDelete | DontEnum); | |
} | |
static JSObject* constructWithFunctionConstructor(ExecState* exec, JSObject*, const ArgList& args) | |
{ | |
return constructFunction(exec, args); | |
} | |
ConstructType FunctionConstructor::getConstructData(ConstructData& constructData) | |
{ | |
constructData.native.function = constructWithFunctionConstructor; | |
return ConstructTypeHost; | |
} | |
static JSValue JSC_HOST_CALL callFunctionConstructor(ExecState* exec, JSObject*, JSValue, const ArgList& args) | |
{ | |
return constructFunction(exec, args); | |
} | |
// ECMA 15.3.1 The Function Constructor Called as a Function | |
CallType FunctionConstructor::getCallData(CallData& callData) | |
{ | |
callData.native.function = callFunctionConstructor; | |
return CallTypeHost; | |
} | |
// ECMA 15.3.2 The Function Constructor | |
JSObject* constructFunction(ExecState* exec, const ArgList& args, const Identifier& functionName, const UString& sourceURL, int lineNumber) | |
{ | |
// Functions need to have a space following the opening { due to for web compatibility | |
// see https://bugs.webkit.org/show_bug.cgi?id=24350 | |
// We also need \n before the closing } to handle // comments at the end of the last line | |
UString program; | |
if (args.isEmpty()) | |
program = "(function() { \n})"; | |
else if (args.size() == 1) | |
program = makeString("(function() { ", args.at(0).toString(exec), "\n})"); | |
else { | |
StringBuilder builder; | |
builder.append("(function("); | |
builder.append(args.at(0).toString(exec)); | |
for (size_t i = 1; i < args.size() - 1; i++) { | |
builder.append(","); | |
builder.append(args.at(i).toString(exec)); | |
} | |
builder.append(") { "); | |
builder.append(args.at(args.size() - 1).toString(exec)); | |
builder.append("\n})"); | |
program = builder.release(); | |
} | |
int errLine; | |
UString errMsg; | |
SourceCode source = makeSource(program, sourceURL, lineNumber); | |
RefPtr<FunctionExecutable> function = FunctionExecutable::fromGlobalCode(functionName, exec, exec->dynamicGlobalObject()->debugger(), source, &errLine, &errMsg); | |
if (!function) | |
return throwError(exec, SyntaxError, errMsg, errLine, source.provider()->asID(), source.provider()->url()); | |
JSGlobalObject* globalObject = exec->lexicalGlobalObject(); | |
ScopeChain scopeChain(globalObject, globalObject->globalData(), globalObject, exec->globalThisValue()); | |
return new (exec) JSFunction(exec, function, scopeChain.node()); | |
} | |
// ECMA 15.3.2 The Function Constructor | |
JSObject* constructFunction(ExecState* exec, const ArgList& args) | |
{ | |
return constructFunction(exec, args, Identifier(exec, "anonymous"), UString(), 1); | |
} | |
} // namespace JSC |