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