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75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
#ifndef SPROUT_WEED_TRAITS_PARSER_IS_PARSER_HPP
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#define SPROUT_WEED_TRAITS_PARSER_IS_PARSER_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/weed/unused.hpp>
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#include <sprout/weed/parser/parser_base.hpp>
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#include <sprout/weed/traits/type/is_char_type.hpp>
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#include <sprout/weed/traits/type/is_c_str.hpp>
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#include <sprout/weed/traits/expr/is_expr.hpp>
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namespace sprout {
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namespace weed {
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namespace traits {
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//
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// is_parser
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//
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template<typename T, typename = void>
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struct is_parser;
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template<typename T>
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struct is_parser<
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T,
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typename std::enable_if<
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std::is_base_of<sprout::weed::parser_base, T>::value
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&& !std::is_const<T>::value
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>::type
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>
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: public std::true_type
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{};
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template<typename T>
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struct is_parser<
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T,
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typename std::enable_if<
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sprout::weed::traits::is_expr<T>::value
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&& !std::is_const<T>::value
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>::type
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>
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: public std::true_type
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{};
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template<typename T>
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struct is_parser<
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T,
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typename std::enable_if<
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sprout::weed::traits::is_char_type<T>::value
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&& !std::is_const<T>::value
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>::type
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>
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: public std::true_type
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{};
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template<typename T>
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struct is_parser<
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T,
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typename std::enable_if<
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sprout::weed::traits::is_c_str<T>::value
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&& !std::is_const<T>::value
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>::type
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>
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: public std::true_type
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{};
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template<typename T>
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struct is_parser<
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T,
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typename std::enable_if<
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std::is_const<T>::value
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>::type
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>
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: public sprout::weed::traits::is_parser<
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typename std::remove_const<T>::type
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>
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{};
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} // namespace traits
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} // namespace weed
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} // namespace sprout
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#endif // #ifndef SPROUT_WEED_TRAITS_PARSER_IS_PARSER_HPP
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