mirror of
https://bitbucket.org/smil3y/kde-extraapps.git
synced 2025-02-25 19:32:54 +00:00
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/*
|
|
This file is part of KDevelop
|
|
Copyright 2009 Ramón Zarazúa <killerfox512+kde@gmail.com>
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License version 2 as published by the Free Software Foundation.
|
|
|
|
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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
along with this library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef ASTUTILITIES_H
|
|
#define ASTUTILITIES_H
|
|
|
|
#include "ast.h"
|
|
#include "default_visitor.h"
|
|
|
|
//! All Ast traversing and manipulating convenience functions
|
|
namespace AstUtils
|
|
{
|
|
|
|
/**
|
|
* Convenience function to downcast pointers from AST nodes, since dynamic_cast can't be used.
|
|
* Works mostly like expected with dynamic_cast, except that pointer need not be specified
|
|
* (since the AST works with only pointer). If the types don't match, NULL is returned.
|
|
*/
|
|
template<typename Target, typename Source>
|
|
Target * node_cast(Source * node)
|
|
{
|
|
if(!node)
|
|
return 0;
|
|
|
|
return Target::__node_kind == node->kind ? reinterpret_cast<Target *>(node) : 0;
|
|
}
|
|
|
|
/**
|
|
*Access a declaration node from a translation unit of a known type.
|
|
* @tparam NodeType The known type of the node to be expecting
|
|
* @param tree the top level node of the tree
|
|
* @param index index of the declaration to access, is checked for validity
|
|
* @return the child requested casted to the type, or NULL if invalid
|
|
*/
|
|
template<typename NodeType>
|
|
inline NodeType * childNode(TranslationUnitAST * tree, int index)
|
|
{
|
|
return index < tree->declarations->count() ? node_cast<NodeType>(tree->declarations->at(index)->element) : 0;
|
|
}
|
|
|
|
template<typename NodeType>
|
|
inline NodeType * childNode(ClassSpecifierAST * tree, int index)
|
|
{
|
|
return index < tree->member_specs->count() ? node_cast<NodeType>(tree->member_specs->at(index)->element) : 0;
|
|
}
|
|
|
|
inline InitDeclaratorAST * childInitDeclarator(SimpleDeclarationAST * decl, int index)
|
|
{
|
|
return index < decl->init_declarators->count() ? decl->init_declarators->at(index)->element : 0;
|
|
}
|
|
|
|
inline ParameterDeclarationAST * parameterAtIndex(ParameterDeclarationClauseAST * params, int index)
|
|
{
|
|
return index < params->parameter_declarations->count() ? params->parameter_declarations->at(index)->element : 0;
|
|
}
|
|
|
|
inline ParameterDeclarationAST * parameterAtIndex(DeclaratorAST * decl, int index)
|
|
{
|
|
return decl->parameter_declaration_clause ? parameterAtIndex(decl->parameter_declaration_clause, index) : 0;
|
|
}
|
|
|
|
|
|
//Helper class to collect all the nodes in an AST branch
|
|
struct CollectorVisitor : public DefaultVisitor
|
|
{
|
|
CollectorVisitor(int kind) : m_kind(kind) {}
|
|
|
|
virtual void visit(AST * node)
|
|
{
|
|
if(node && node->kind == m_kind)
|
|
m_nodes.push_back(node);
|
|
|
|
DefaultVisitor::visit(node);
|
|
}
|
|
|
|
int m_kind;
|
|
QList<AST *> m_nodes;
|
|
};
|
|
|
|
/**
|
|
* Find all the AST nodes of the requested type down this @p branch in an AST
|
|
* @tparam Node must be a declared AST type
|
|
* @return A list of all the encountered nodes of the requested type
|
|
*/
|
|
template<typename Node>
|
|
inline QList<AST *> findAllNodesInBranch(AST * branch)
|
|
{
|
|
CollectorVisitor collector(Node::__node_kind);
|
|
collector.visit(branch);
|
|
|
|
return collector.m_nodes;
|
|
}
|
|
|
|
}
|
|
|
|
#endif //ASTUTILITIES_H
|