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/***************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
**
** Non-Open Source Usage
**
** Licensees may use this file in accordance with the Qt Beta Version
** License Agreement, Agreement version 2.2 provided with the Software or,
** alternatively, in accordance with the terms contained in a written
** agreement between you and Nokia.
**
** GNU General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the packaging
** of this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
**
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt GPL Exception
** version 1.3, included in the file GPL_EXCEPTION.txt in this package.
**
***************************************************************************/
#ifndef CPLUSPLUS_TYPEOFEXPRESSION_H
#define CPLUSPLUS_TYPEOFEXPRESSION_H
#include "CppDocument.h"
#include "LookupContext.h"
#include <ASTfwd.h>
#include <QtCore/QMap>
#include <QtCore/QObject>
#include <QtCore/QString>
namespace CPlusPlus {
class Environment;
class Macro;
class CPLUSPLUS_EXPORT TypeOfExpression
{
public:
typedef QPair<FullySpecifiedType, Symbol *> Result;
public:
TypeOfExpression();
Snapshot snapshot() const;
/**
* Sets the documents used to evaluate expressions. Should be set before
* calling this functor.
*
* Also clears the lookup context, so can be used to make sure references
* to the documents previously used are removed.
*/
void setSnapshot(const Snapshot &documents);
enum PreprocessMode {
NoPreprocess,
Preprocess
};
/**
* Returns a list of possible fully specified types associated with the
* given expression.
*
* NOTE: The fully specified types only stay valid for as long as this
* expression evaluator instance still exists, and no new call to evaluate
* has been made!
*
* @param expression The expression to evaluate.
* @param document The document the expression is part of.
* @param lastVisibleSymbol The last visible symbol in the document.
*/
QList<Result> operator()(const QString &expression, Document::Ptr document,
Symbol *lastVisibleSymbol,
PreprocessMode mode = NoPreprocess);
QString preprocess(const QString &expression, Document::Ptr document) const;
/**
* Returns the AST of the last evaluated expression.
*/
ExpressionAST *ast() const;
/**
* Returns the lookup context of the last evaluated expression.
*/
const LookupContext &lookupContext() const;
ExpressionAST *expressionAST() const;
private:
ExpressionAST *extractExpressionAST(Document::Ptr doc) const;
Document::Ptr documentForExpression(const QString &expression) const;
void processEnvironment(CPlusPlus::Snapshot documents,
CPlusPlus::Document::Ptr doc, CPlusPlus::Environment *env,
QSet<QString> *processed) const;
QString preprocessedExpression(const QString &expression,
CPlusPlus::Snapshot documents,
CPlusPlus::Document::Ptr thisDocument) const;
Snapshot m_snapshot;
ExpressionAST *m_ast;
LookupContext m_lookupContext;
};
} // namespace CPlusPlus
#endif // CPLUSPLUS_TYPEOFEXPRESSION_H
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