Chris@16: /*=============================================================================
Chris@16:     Boost.Wave: A Standard compliant C++ preprocessor library
Chris@16: 
Chris@16:     http://www.boost.org/
Chris@16: 
Chris@16:     Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
Chris@16:     Software License, Version 1.0. (See accompanying file
Chris@16:     LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: =============================================================================*/
Chris@16: 
Chris@16: #if !defined(ITERATION_CONTEXT_HPP_9556CD16_F11E_4ADC_AC8B_FB9A174BE664_INCLUDED)
Chris@16: #define ITERATION_CONTEXT_HPP_9556CD16_F11E_4ADC_AC8B_FB9A174BE664_INCLUDED
Chris@16: 
Chris@16: #include <cstdlib>
Chris@16: #include <cstdio>
Chris@16: #include <stack>
Chris@16: 
Chris@16: #include <boost/wave/wave_config.hpp>
Chris@16: #include <boost/wave/cpp_exceptions.hpp>
Chris@16: 
Chris@16: // this must occur after all of the includes and before any code appears
Chris@16: #ifdef BOOST_HAS_ABI_HEADERS
Chris@16: #include BOOST_ABI_PREFIX
Chris@16: #endif
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: namespace boost {
Chris@16: namespace wave {
Chris@16: namespace util {
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: template <typename IterationContextT>
Chris@16: class iteration_context_stack
Chris@16: {
Chris@16:     typedef std::stack<IterationContextT> base_type;
Chris@16: 
Chris@16: public:
Chris@16:     typedef typename base_type::size_type size_type;
Chris@16: 
Chris@16:     iteration_context_stack()
Chris@16:     :   max_include_nesting_depth(BOOST_WAVE_MAX_INCLUDE_LEVEL_DEPTH)
Chris@16:     {}
Chris@16: 
Chris@16:     void set_max_include_nesting_depth(size_type new_depth)
Chris@16:         {  max_include_nesting_depth = new_depth; }
Chris@16:     size_type get_max_include_nesting_depth() const
Chris@16:         { return max_include_nesting_depth; }
Chris@16: 
Chris@16:     typename base_type::size_type size() const { return iter_ctx.size(); }
Chris@16:     typename base_type::value_type &top() { return iter_ctx.top(); }
Chris@16:     void pop() { iter_ctx.pop(); }
Chris@16: 
Chris@16:     template <typename Context, typename PositionT>
Chris@16:     void push(Context& ctx, PositionT const &pos,
Chris@16:         typename base_type::value_type const &val)
Chris@16:     {
Chris@16:         if (iter_ctx.size() == max_include_nesting_depth) {
Chris@16:         char buffer[22];    // 21 bytes holds all NUL-terminated unsigned 64-bit numbers
Chris@16: 
Chris@16:             using namespace std;    // for some systems sprintf is in namespace std
Chris@16:             sprintf(buffer, "%d", (int)max_include_nesting_depth);
Chris@16:             BOOST_WAVE_THROW_CTX(ctx, preprocess_exception,
Chris@16:                 include_nesting_too_deep, buffer, pos);
Chris@16:         }
Chris@16:         iter_ctx.push(val);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     size_type max_include_nesting_depth;
Chris@16:     base_type iter_ctx;
Chris@16: };
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: }   // namespace util
Chris@16: }   // namespace wave
Chris@16: }   // namespace boost
Chris@16: 
Chris@16: // the suffix header occurs after all of the code
Chris@16: #ifdef BOOST_HAS_ABI_HEADERS
Chris@16: #include BOOST_ABI_SUFFIX
Chris@16: #endif
Chris@16: 
Chris@16: #endif // !defined(ITERATION_CONTEXT_HPP_9556CD16_F11E_4ADC_AC8B_FB9A174BE664_INCLUDED)