152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the V4VM module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QMLJS_ENVIRONMENT_H
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#define QMLJS_ENVIRONMENT_H
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#include <qmljs_runtime.h>
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namespace QQmlJS {
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namespace VM {
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struct Value;
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struct Object;
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struct ExecutionEngine;
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struct ExecutionContext;
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struct DeclarativeEnvironment;
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struct DiagnosticMessage
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{
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enum { Error, Warning };
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String *fileName;
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quint32 offset;
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quint32 length;
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quint32 startLine;
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unsigned startColumn: 31;
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unsigned type: 1;
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String *message;
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DiagnosticMessage *next;
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DiagnosticMessage();
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String *buildFullMessage(ExecutionContext *ctx) const;
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};
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// This merges LexicalEnvironment and EnvironmentRecord from
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// Sec. 10.2 into one class
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struct DeclarativeEnvironment
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{
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ExecutionEngine *engine;
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DeclarativeEnvironment *outer;
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Value *arguments;
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unsigned int argumentCount;
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Value *locals;
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String **formals;
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unsigned int formalCount;
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String **vars;
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unsigned int varCount;
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bool strictMode;
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Object *activation;
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struct With {
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Object *object;
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With *next;
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} *withObject;
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void init(ExecutionEngine *e);
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void init(FunctionObject *f, Value *args, uint argc);
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bool hasBinding(String *name) const;
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void createMutableBinding(ExecutionContext *ctx, String *name, bool deletable);
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void setMutableBinding(String *name, Value value, bool strict);
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Value getBindingValue(String *name, bool strict) const;
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bool deleteBinding(ExecutionContext *ctx, String *name);
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// ### needs a bit of work in exception handlers
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void pushWithObject(Object *with);
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void popWithObject();
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};
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struct ExecutionContext
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{
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ExecutionEngine *engine;
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ExecutionContext *parent;
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// ### Should be a general environment
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DeclarativeEnvironment *lexicalEnvironment;
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Value thisObject;
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void init(ExecutionEngine *eng);
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void initCallContext(ExecutionContext *parent, const Value that, FunctionObject *f, Value *args, unsigned argc);
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void leaveCallContext();
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void initConstructorContext(ExecutionContext *parent, Value that, FunctionObject *f, Value *args, unsigned argc);
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void leaveConstructorContext(FunctionObject *f);
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void wireUpPrototype(FunctionObject *f);
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void throwError(Value value);
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void throwError(const QString &message);
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void throwSyntaxError(DiagnosticMessage *message);
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void throwTypeError();
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void throwReferenceError(Value value);
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void throwUnimplemented(const QString &message);
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PropertyDescriptor *lookupPropertyDescriptor(String *name, PropertyDescriptor *tmp);
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void inplaceBitOp(Value value, String *name, BinOp op);
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bool deleteProperty(String *name);
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inline uint argumentCount() const { return lexicalEnvironment->argumentCount; }
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inline Value argument(unsigned int index = 0)
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{
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if (index < lexicalEnvironment->argumentCount)
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return lexicalEnvironment->arguments[index];
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return Value::undefinedValue();
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}
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};
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} // namespace VM
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} // namespace QQmlJS
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#endif
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