48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/*
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* Copyright 2019 by its authors. See AUTHORS.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef EOLIAN_CXX_EPS_HH
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#define EOLIAN_CXX_EPS_HH
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#include "grammar/generator.hpp"
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namespace efl { namespace eolian { namespace grammar {
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struct eps_generator
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{
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eps_generator () : r(true) {}
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eps_generator (bool r) : r(r) {}
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bool r;
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template <typename OutputIterator, typename Attribute, typename Context>
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bool generate(OutputIterator, Attribute const&, Context const&) const
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{
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return r;
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}
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eps_generator operator()(bool r) const { return {r}; }
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};
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template <>
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struct is_eager_generator<eps_generator> : std::true_type {};
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template <>
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struct is_generator<eps_generator> : std::true_type {};
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eps_generator const eps = {};
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} } }
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#endif
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