35 lines
1.0 KiB
C++
35 lines
1.0 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_RULE_CONJUNCTION_HH
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#define TAO_CPP_PEGTL_INTERNAL_RULE_CONJUNCTION_HH
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#include "../apply_mode.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< typename ... Rules >
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struct rule_conjunction
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{
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template< apply_mode A, template< typename ... > class Action, template< typename ... > class Control, typename Input, typename ... States >
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static bool match( Input & in, States && ... st )
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{
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#ifdef __cpp_fold_expressions
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return ( Control< Rules >::template match< A, Action, Control >( in, st ... ) && ... );
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#else
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bool result = true;
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using swallow = bool[];
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(void)swallow{ result = result && Control< Rules >::template match< A, Action, Control >( in, st ... ) ..., true };
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return result;
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#endif
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}
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};
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} // namespace internal
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} // namespace tao_json_pegtl
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#endif
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