110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
#ifndef MBGL_STYLE_VALUE_COMPARISON
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#define MBGL_STYLE_VALUE_COMPARISON
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#include "value.hpp"
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#include <cstdlib>
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#include <cerrno>
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namespace mbgl {
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namespace util {
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namespace detail {
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template <typename Operator>
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struct relaxed_operator_visitor {
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typedef bool result_type;
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inline bool operator()(bool lhs, bool rhs) const { return Operator()(lhs, rhs); }
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template <typename T, class = typename std::enable_if<std::is_arithmetic<T>::value>::type>
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inline bool operator()(bool lhs, T rhs) const { return Operator()(T(lhs), rhs); }
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template <typename T, class = typename std::enable_if<std::is_arithmetic<T>::value>::type>
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inline bool operator()(T lhs, bool rhs) const { return Operator()(lhs, T(rhs)); }
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inline bool operator()(int64_t lhs, uint64_t rhs) const {
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return lhs < 0 ? false : Operator()(uint64_t(lhs), rhs);
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}
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inline bool operator()(uint64_t lhs, int64_t rhs) const {
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return rhs < 0 ? false : Operator()(lhs, uint64_t(rhs));
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}
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template <typename T, class = typename std::enable_if<std::is_arithmetic<T>::value>::type>
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inline bool operator()(const std::string &lhs, T rhs) const {
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double value;
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return parseNumericString(lhs, value) ? Operator()(value, double(rhs)) : false;
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}
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template <typename T, class = typename std::enable_if<std::is_arithmetic<T>::value>::type>
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inline bool operator()(T lhs, const std::string &rhs) const {
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double value;
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return parseNumericString(rhs, value) ? Operator()(double(lhs), value) : false;
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}
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template <typename T0, typename T1>
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inline bool operator()(T0 lhs, T1 rhs) const { return Operator()(lhs, rhs); }
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};
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struct relaxed_equal_operator {
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template <typename T0, typename T1>
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inline bool operator()(T0 lhs, T1 rhs) const { return lhs == rhs; }
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};
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struct relaxed_not_equal_operator {
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template <typename T0, typename T1>
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inline bool operator()(T0 lhs, T1 rhs) const { return lhs != rhs; }
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};
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struct relaxed_greater_operator {
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template <typename T0, typename T1>
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inline bool operator()(T0 lhs, T1 rhs) const { return lhs > rhs; }
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};
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struct relaxed_greater_equal_operator {
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template <typename T0, typename T1>
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inline bool operator()(T0 lhs, T1 rhs) const { return lhs >= rhs; }
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};
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struct relaxed_less_operator {
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template <typename T0, typename T1>
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inline bool operator()(T0 lhs, T1 rhs) const { return lhs < rhs; }
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};
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struct relaxed_less_equal_operator {
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template <typename T0, typename T1>
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inline bool operator()(T0 lhs, T1 rhs) const { return lhs <= rhs; }
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};
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} // end namespace detail
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inline bool relaxed_equal(Value const &lhs, Value const &rhs) {
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return apply_visitor(detail::relaxed_operator_visitor<detail::relaxed_equal_operator>(), lhs, rhs);
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}
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inline bool relaxed_not_equal(Value const &lhs, Value const &rhs) {
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return apply_visitor(detail::relaxed_operator_visitor<detail::relaxed_not_equal_operator>(), lhs, rhs);
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}
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inline bool relaxed_greater(Value const &lhs, Value const &rhs) {
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return apply_visitor(detail::relaxed_operator_visitor<detail::relaxed_greater_operator>(), lhs, rhs);
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}
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inline bool relaxed_greater_equal(Value const &lhs, Value const &rhs) {
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return apply_visitor(detail::relaxed_operator_visitor<detail::relaxed_greater_equal_operator>(), lhs, rhs);
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}
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inline bool relaxed_less(Value const &lhs, Value const &rhs) {
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return apply_visitor(detail::relaxed_operator_visitor<detail::relaxed_less_operator>(), lhs, rhs);
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}
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inline bool relaxed_less_equal(Value const &lhs, Value const &rhs) {
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return apply_visitor(detail::relaxed_operator_visitor<detail::relaxed_less_equal_operator>(), lhs, rhs);
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}
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}
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}
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#endif
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