104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
/***************************************************************************
|
|
|
|
PAnnotation.hpp
|
|
|
|
Author: Andreas Suter
|
|
e-mail: andreas.suter@psi.ch
|
|
|
|
Based on Joel de Guzman example on calc7,
|
|
see https://github.com/boostorg/spirit
|
|
|
|
***************************************************************************/
|
|
|
|
/***************************************************************************
|
|
* Copyright (C) 2020 by Andreas Suter *
|
|
* andreas.suter@psi.ch *
|
|
* *
|
|
* 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., *
|
|
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
|
|
***************************************************************************/
|
|
|
|
#ifndef _PANNOTATION_HPP_
|
|
#define _PANNOTATION_HPP_
|
|
|
|
#include <map>
|
|
#include <boost/variant/apply_visitor.hpp>
|
|
#include <boost/type_traits/is_base_of.hpp>
|
|
#include <boost/mpl/bool.hpp>
|
|
#include "PAst.hpp"
|
|
|
|
namespace mupp
|
|
{
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// The annotation handler links the AST to a map of iterator positions
|
|
// for the purpose of subsequent semantic error handling when the
|
|
// program is being compiled.
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template <typename Iterator>
|
|
struct PAnnotation
|
|
{
|
|
template <typename, typename>
|
|
struct result { typedef void type; };
|
|
|
|
std::vector<Iterator>& iters;
|
|
PAnnotation(std::vector<Iterator>& iters) : iters(iters) {}
|
|
|
|
struct set_id
|
|
{
|
|
typedef void result_type;
|
|
|
|
int id;
|
|
set_id(int id) : id(id) {}
|
|
|
|
template <typename T>
|
|
void operator()(T& x) const
|
|
{
|
|
this->dispatch(x, boost::is_base_of<ast::tagged, T>());
|
|
}
|
|
|
|
// This will catch all nodes except those inheriting from ast::tagged
|
|
template <typename T>
|
|
void dispatch(T& x, boost::mpl::false_) const
|
|
{
|
|
// (no-op) no need for tags
|
|
}
|
|
|
|
// This will catch all nodes inheriting from ast::tagged
|
|
template <typename T>
|
|
void dispatch(T& x, boost::mpl::true_) const
|
|
{
|
|
x.id = id;
|
|
}
|
|
};
|
|
|
|
void operator()(ast::operand& ast, Iterator pos) const
|
|
{
|
|
int id = iters.size();
|
|
iters.push_back(pos);
|
|
boost::apply_visitor(set_id(id), ast);
|
|
}
|
|
|
|
void operator()(ast::assignment& ast, Iterator pos) const
|
|
{
|
|
int id = iters.size();
|
|
iters.push_back(pos);
|
|
ast.lhs.id = id;
|
|
}
|
|
};
|
|
}
|
|
|
|
#endif // _PANNOTATION_HPP_
|
|
|