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/*
Copyright (C) 2010 Ciprian Ciubotariu <cheepeero@gmx.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef CPP_ADLHELPER_H
#define CPP_ADLHELPER_H
#include <QSet>
#include "overloadresolution.h"
#include <language/duchain/types/typesystem.h>
namespace Cpp
{
using namespace KDevelop;
/**
* @brief Performs type traversal by ADLHelper in type traversal.
*/
class ADLTypeVisitor : public KDevelop::TypeVisitor
{
public:
explicit ADLTypeVisitor(ADLHelper & helper);
virtual bool preVisit(const AbstractType * type);
virtual void postVisit(const AbstractType *);
virtual bool visit(const AbstractType* type);
virtual void visit(const KDevelop::IntegralType * type);
virtual bool visit(const KDevelop::PointerType * type);
virtual void endVisit(const KDevelop::PointerType *);
virtual bool visit(const KDevelop::ReferenceType * type);
virtual void endVisit(const KDevelop::ReferenceType *);
virtual bool visit(const KDevelop::FunctionType * type);
virtual void endVisit(const KDevelop::FunctionType *);
virtual bool visit(const KDevelop::StructureType * type);
virtual void endVisit(const KDevelop::StructureType *);
virtual bool visit(const KDevelop::ArrayType * type);
virtual void endVisit(const KDevelop::ArrayType *);
private:
ADLHelper & m_helper;
bool seen(const KDevelop::AbstractType* type);
};
/**
* @brief Used for implementing ADL lookup.
* See ISO 14882.2003, section 3.4.2 Argument-dependent name lookup [basic.lookup.koenig]
*
* Add all function arguments (or their types) to an object.
* Uninteresting arguments and types are skipped by the helper.
* If an argument is found to match conditions for ADL it is added to the associated namespace list.
*
* Already seen types/classes/function declarations are skipped by the ADLTypeVisitor object.
*/
class ADLHelper
{
public:
/**
* @copydoc Cpp::OverloadResolver::OverloadResolver()
*/
ADLHelper(DUContextPointer context, TopDUContextPointer topContext);
/** @brief Adds an function argument for lookup. */
void addArgument(const OverloadResolver::Parameter & argument);
/** @brief Adds an function argument type for lookup. */
void addArgumentType(const AbstractType::Ptr type);
/** @brief Retrieves the list of associated namespaces . */
QSet<QualifiedIdentifier> associatedNamespaces() const;
private:
/**
* @brief Adds an associated class type and its associated classes.
*
* If T is a class type (including unions), its associated classes are: the class itself; the class of which it is a
* member, if any; and its direct and indirect base classes. Its associated namespaces are the namespaces
* in which its associated classes are defined.
*/
void addAssociatedClass(Declaration * declaration);
/**
* @brief Adds an associated namespace by identifier.
*/
void addAssociatedNamespace(const KDevelop::QualifiedIdentifier & identifier);
void addBaseClasses(Declaration* decl);
/** @brief Finds and adds the namespace of a declaration. */
void addDeclarationScopeIdentifier(Declaration * decl);
private:
/** @brief List of namespaces found by the ADL. */
QSet<QualifiedIdentifier> m_associatedNamespaces;
// AbstractType* or Declaration*
QSet<const void*> m_alreadyProcessed;
KDevelop::DUContextPointer m_context;
KDevelop::TopDUContextPointer m_topContext;
friend class ADLTypeVisitor;
ADLTypeVisitor m_typeVisitor;
/**
* @brief Flags processing of the arguments of a template type.
*
* If equal to 0, we are processing the function call arguments.
* If greater than 0, we are processing template arguments of one of the function call arguments.
* The value itself represents the instantiation depth of template arguments.
*/
int m_templateArgsDepth;
/**
* @brief Possibly the function named used as argument by the caller.
* May be @c NULL .
* See the comments inside @code ADLTypeVisitor::endVisit(const FunctionType *) @endcode for details.
*/
IndexedDeclaration m_possibleFunctionName;
};
}
#endif // CPP_ADLHELPER_H
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