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