84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
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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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* Copyright 2018 Danny Robson <danny@nerdcruft.net>
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*/
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#include "length.hpp"
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#include "../tree.hpp"
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using util::json::schema::constraint::length;
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///////////////////////////////////////////////////////////////////////////////
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namespace {
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template <typename ComparatorT>
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struct field_name { };
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template <>
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struct field_name<std::greater_equal<std::size_t>> {
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static constexpr char const *const value = "minLength";
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};
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template <>
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struct field_name<std::less_equal<std::size_t>> {
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static constexpr char const *const value = "maxLength";
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};
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template <typename ComparatorT>
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static constexpr auto field_name_v = field_name<ComparatorT>::value;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <typename ComparatorT>
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length<ComparatorT>::length(::json::tree::node const &def):
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m_length(def.as<std::size_t> ())
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{ ; }
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///////////////////////////////////////////////////////////////////////////////
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template <typename ComparatorT>
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typename length<ComparatorT>::output_iterator
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length<ComparatorT>::validate (output_iterator res, ::json::tree::node &target) const noexcept
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{
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if (!target.is_string ()) {
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return *res++ = failure { .rule = *this, .target = target };
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}
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auto const &val = target.as_string ();
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if (!ComparatorT{}(val.size (), m_length))
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*res++ = failure { .rule = *this, .target = target };
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return res;
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}
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///////////////////////////////////////////////////////////////////////////////
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template <typename ComparatorT>
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std::ostream&
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length<ComparatorT>::describe (std::ostream &os) const
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{
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return os << "{ " << ::field_name_v<ComparatorT> << ": " << m_length << " }";
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}
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///////////////////////////////////////////////////////////////////////////////
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template class util::json::schema::constraint::length<std::less_equal<std::size_t>>;
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template class util::json::schema::constraint::length<std::greater_equal<std::size_t>>;
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