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/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#if !defined(BOOST_SPIRIT_MINIC_ANNOTATION_HPP)
#define BOOST_SPIRIT_MINIC_ANNOTATION_HPP
#include <map>
#include <boost/variant/apply_visitor.hpp>
#include <boost/type_traits/is_base_of.hpp>
#include <boost/mpl/bool.hpp>
#include "ast.hpp"
namespace client
{
///////////////////////////////////////////////////////////////////////////////
// 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 annotation
{
template <typename, typename>
struct result { typedef void type; };
std::vector<Iterator>& iters;
annotation(std::vector<Iterator>& iters)
: iters(iters) {}
struct set_id
{
typedef void result_type;
int id;
set_id(int id) : id(id) {}
void operator()(ast::function_call& x) const
{
x.function_name.id = id;
}
void operator()(ast::identifier& x) const
{
x.id = id;
}
template <typename T>
void operator()(T& x) const
{
// no-op
}
};
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::variable_declaration& ast, Iterator pos) const
{
int id = iters.size();
iters.push_back(pos);
ast.lhs.id = id;
}
void operator()(ast::assignment& ast, Iterator pos) const
{
int id = iters.size();
iters.push_back(pos);
ast.lhs.id = id;
}
void operator()(ast::return_statement& ast, Iterator pos) const
{
int id = iters.size();
iters.push_back(pos);
ast.id = id;
}
void operator()(ast::identifier& ast, Iterator pos) const
{
int id = iters.size();
iters.push_back(pos);
ast.id = id;
}
};
}
#endif