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/*=============================================================================
Wave: A Standard compliant C++ preprocessor
Copyright (c) 2001-2004 Hartmut Kaiser
http://spirit.sourceforge.net/
Use, modification and distribution is subject to 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)
See Copyright.txt for full acknowledgements.
=============================================================================*/
#if !defined(MACRO_DEFINITION_HPP_D68A639E_2DA5_4E9C_8ACD_CFE6B903831E_INCLUDED)
#define MACRO_DEFINITION_HPP_D68A639E_2DA5_4E9C_8ACD_CFE6B903831E_INCLUDED
#include <vector>
#include <list>
#include "wave/token_ids.hpp"
///////////////////////////////////////////////////////////////////////////////
namespace wave {
namespace util {
///////////////////////////////////////////////////////////////////////////////
//
// macro_definition
//
// This class containes all infos for a defined macro.
//
///////////////////////////////////////////////////////////////////////////////
template <typename TokenT, typename ContainerT>
struct macro_definition {
typedef std::vector<TokenT> parameter_container_t;
typedef ContainerT definition_container_t;
typedef typename parameter_container_t::const_iterator
const_parameter_iterator_t;
typedef typename definition_container_t::const_iterator
const_definition_iterator_t;
macro_definition(TokenT const &token_, bool has_parameters,
bool is_predefined_, long uid_)
: macroname(token_), uid(uid_), is_functionlike(has_parameters),
replaced_parameters(false), is_available_for_replacement(true),
is_predefined(is_predefined_)
#if defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
, has_ellipsis(false)
#endif // defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
{
}
// generated copy constructor
// generated destructor
// generated assignment operator
// Replace all occurrences of the parameters throughout the macrodefinition
// with special parameter tokens to simplify later macro replacement.
// Additionally mark all occurrences of the macro name itself throughout
// the macro definition
void replace_parameters()
{
using namespace WAVE_LEXER_NS;
if (!replaced_parameters) {
typename definition_container_t::iterator end = macrodefinition.end();
typename definition_container_t::iterator it = macrodefinition.begin();
for (/**/; it != end; ++it) {
if (T_IDENTIFIER == token_id(*it) ||
IS_CATEGORY(token_id(*it), KeywordTokenType))
{
// may be a parameter to replace
const_parameter_iterator_t cend = macroparameters.end();
const_parameter_iterator_t cit = macroparameters.begin();
for (typename parameter_container_t::size_type i = 0;
cit != cend; ++cit, ++i)
{
if ((*it).get_value() == (*cit).get_value()) {
(*it).set_token_id(token_id(T_PARAMETERBASE+i));
break;
}
#if defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
else if (T_ELLIPSIS == token_id(*cit) &&
"__VA_ARGS__" == (*it).get_value())
{
// __VA_ARGS__ requires special handling
(*it).set_token_id(token_id(T_EXTPARAMETERBASE+i));
break;
}
#endif // defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
}
}
}
#if defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
// we need to know, if the last of the formal arguments is an ellipsis
if (macroparameters.size() > 0 &&
T_ELLIPSIS == token_id(macroparameters.back()))
{
has_ellipsis = true;
}
#endif // defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
replaced_parameters = true; // do it only once
}
}
TokenT macroname; // macro name
parameter_container_t macroparameters; // formal parameters
definition_container_t macrodefinition; // macro definition token sequence
long uid; // unique id of this macro
bool is_functionlike;
bool replaced_parameters;
bool is_available_for_replacement;
bool is_predefined;
#if defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
bool has_ellipsis;
#endif // defined(WAVE_SUPPORT_VARIADICS_PLACEMARKERS)
};
///////////////////////////////////////////////////////////////////////////////
} // namespace util
} // namespace wave
#endif // !defined(MACRO_DEFINITION_HPP_D68A639E_2DA5_4E9C_8ACD_CFE6B903831E_INCLUDED)
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