61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// Copyright (c) 2014-2015 Dr. Colin Hirsch and Daniel Frey
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// Please see LICENSE for license or visit https://github.com/ColinH/PEGTL/
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#ifndef TAO_CPP_PEGTL_INTERNAL_RANGE_HH
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#define TAO_CPP_PEGTL_INTERNAL_RANGE_HH
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#include "any.hh"
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#include "bump_util.hh"
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#include "skip_control.hh"
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#include "result_on_found.hh"
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#include "../analysis/generic.hh"
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namespace tao_json_pegtl
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{
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namespace internal
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{
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template< result_on_found R, typename Peek, typename Peek::data_t Lo, typename Peek::data_t Hi >
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struct range
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{
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using analyze_t = analysis::generic< analysis::rule_type::ANY >;
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template< int Eol >
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struct can_match_eol
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{
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static constexpr bool value = ( ( ( Lo <= Eol ) && ( Eol <= Hi ) ) == bool( R ) );
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};
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// suppress warning with GCC 4.7
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template< typename T >
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static inline bool dummy_less_or_equal( const T a, const T b )
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{
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return a <= b;
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}
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template< typename Input >
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static bool match( Input & in )
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{
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using eol_t = typename Input::eol_t;
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if ( ! in.empty() ) {
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if ( const auto t = Peek::peek( in ) ) {
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if ( ( dummy_less_or_equal( Lo, t.data ) && dummy_less_or_equal( t.data, Hi ) ) == bool( R ) ) {
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bump_impl< can_match_eol< eol_t::ch >::value >::bump( in, t.size );
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return true;
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}
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}
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}
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return false;
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}
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};
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template< result_on_found R, typename Peek, typename Peek::data_t Lo, typename Peek::data_t Hi >
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struct skip_control< range< R, Peek, Lo, Hi > > : std::true_type {};
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} // namespace internal
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} // namespace tao_json_pegtl
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#endif
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