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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#ifndef CPLUSPLUS_TYPEOFEXPRESSION_H
#define CPLUSPLUS_TYPEOFEXPRESSION_H
#include "CppDocument.h"
#include "LookupContext.h"
#include "PreprocessorEnvironment.h"
#include <ASTfwd.h>
#include <QtCore/QMap>
#include <QtCore/QObject>
#include <QtCore/QString>
namespace CPlusPlus {
class Environment;
class Macro;
class CPLUSPLUS_EXPORT TypeOfExpression
{
Q_DISABLE_COPY(TypeOfExpression)
public:
TypeOfExpression();
/**
* 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 init(Document::Ptr thisDocument, const Snapshot &snapshot,
QSharedPointer<CreateBindings> bindings = QSharedPointer<CreateBindings>());
void reset();
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 scope The scope enclosing the expression.
*/
QList<LookupItem> operator()(const QString &expression,
Scope *scope,
PreprocessMode mode = NoPreprocess);
/**
* Returns a list of possible fully specified types associated with the
* given expression AST from the given document.
*
* 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 in which the expression lives.
* @param scope The scope enclosing the expression.
*/
QList<LookupItem> operator()(ExpressionAST *expression,
Document::Ptr document,
Scope *scope);
QList<LookupItem> reference(const QString &expression,
Scope *scope,
PreprocessMode mode = NoPreprocess);
QList<LookupItem> reference(ExpressionAST *expression,
Document::Ptr document,
Scope *scope);
QString preprocess(const QString &expression) const;
/**
* Returns the AST of the last evaluated expression.
*/
ExpressionAST *ast() const;
/**
* Returns the lookup context of the last evaluated expression.
*/
const LookupContext &context() const;
Scope *scope() const;
ExpressionAST *expressionAST() const;
private:
ExpressionAST *extractExpressionAST(Document::Ptr doc) const;
Document::Ptr documentForExpression(const QString &expression) const;
void processEnvironment(Document::Ptr doc, Environment *env,
QSet<QString> *processed) const;
QString preprocessedExpression(const QString &expression) const;
private:
Document::Ptr m_thisDocument;
Snapshot m_snapshot;
QSharedPointer<CreateBindings> m_bindings;
ExpressionAST *m_ast;
Scope *m_scope;
LookupContext m_lookupContext;
mutable QSharedPointer<Environment> m_environment;
};
} // namespace CPlusPlus
#endif // CPLUSPLUS_TYPEOFEXPRESSION_H
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