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83 lines
2.8 KiB
83 lines
2.8 KiB
/*============================================================================= |
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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) 2001-2011 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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