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author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:34:13 (GMT) |
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committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:34:13 (GMT) |
commit | 67ad0519fd165acee4a4d2a94fa502e9e4847bd0 (patch) | |
tree | 1dbf50b3dff8d5ca7e9344733968c72704eb15ff /src/3rdparty/webkit/JavaScriptCore/runtime/FunctionConstructor.cpp | |
download | Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.zip Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.tar.gz Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.tar.bz2 |
Long live Qt!
Diffstat (limited to 'src/3rdparty/webkit/JavaScriptCore/runtime/FunctionConstructor.cpp')
-rw-r--r-- | src/3rdparty/webkit/JavaScriptCore/runtime/FunctionConstructor.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/FunctionConstructor.cpp b/src/3rdparty/webkit/JavaScriptCore/runtime/FunctionConstructor.cpp new file mode 100644 index 0000000..e8cfe65 --- /dev/null +++ b/src/3rdparty/webkit/JavaScriptCore/runtime/FunctionConstructor.cpp @@ -0,0 +1,128 @@ +/* + * 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 "FunctionPrototype.h" +#include "JSFunction.h" +#include "JSGlobalObject.h" +#include "JSString.h" +#include "Parser.h" +#include "Debugger.h" +#include "Lexer.h" +#include "Nodes.h" + +namespace JSC { + +ASSERT_CLASS_FITS_IN_CELL(FunctionConstructor); + +FunctionConstructor::FunctionConstructor(ExecState* exec, PassRefPtr<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 JSValuePtr callFunctionConstructor(ExecState* exec, JSObject*, JSValuePtr, 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; +} + +static FunctionBodyNode* functionBody(ProgramNode* program) +{ + if (!program) + return 0; + + StatementVector& children = program->children(); + if (children.size() != 1) + return 0; + + ExprStatementNode* exprStatement = static_cast<ExprStatementNode*>(children[0].get()); + ASSERT(exprStatement->isExprStatement()); + if (!exprStatement || !exprStatement->isExprStatement()) + return 0; + + FuncExprNode* funcExpr = static_cast<FuncExprNode*>(exprStatement->expr()); + ASSERT(funcExpr->isFuncExprNode()); + if (!funcExpr || !funcExpr->isFuncExprNode()) + return 0; + + FunctionBodyNode* body = funcExpr->body(); + ASSERT(body); + return body; +} + +// ECMA 15.3.2 The Function Constructor +JSObject* constructFunction(ExecState* exec, const ArgList& args, const Identifier& functionName, const UString& sourceURL, int lineNumber) +{ + UString program; + if (args.isEmpty()) + program = "(function(){})"; + else if (args.size() == 1) + program = "(function(){" + args.at(exec, 0)->toString(exec) + "})"; + else { + program = "(function(" + args.at(exec, 0)->toString(exec); + for (size_t i = 1; i < args.size() - 1; i++) + program += "," + args.at(exec, i)->toString(exec); + program += "){" + args.at(exec, args.size() - 1)->toString(exec) + "})"; + } + + int errLine; + UString errMsg; + SourceCode source = makeSource(program, sourceURL, lineNumber); + RefPtr<ProgramNode> programNode = exec->globalData().parser->parse<ProgramNode>(exec, exec->dynamicGlobalObject()->debugger(), source, &errLine, &errMsg); + + FunctionBodyNode* body = functionBody(programNode.get()); + if (!body) + return throwError(exec, SyntaxError, errMsg, errLine, source.provider()->asID(), source.provider()->url()); + + JSGlobalObject* globalObject = exec->lexicalGlobalObject(); + ScopeChain scopeChain(globalObject, globalObject->globalData(), exec->globalThisValue()); + return new (exec) JSFunction(exec, functionName, body, 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 |