diff options
Diffstat (limited to 'include/mbgl/style/conversion/filter.hpp')
-rw-r--r-- | include/mbgl/style/conversion/filter.hpp | 243 |
1 files changed, 1 insertions, 242 deletions
diff --git a/include/mbgl/style/conversion/filter.hpp b/include/mbgl/style/conversion/filter.hpp index 986d1bf80d..9daf6ea7a4 100644 --- a/include/mbgl/style/conversion/filter.hpp +++ b/include/mbgl/style/conversion/filter.hpp @@ -2,7 +2,6 @@ #include <mbgl/style/filter.hpp> #include <mbgl/style/conversion.hpp> -#include <mbgl/util/geometry.hpp> namespace mbgl { namespace style { @@ -11,247 +10,7 @@ namespace conversion { template <> struct Converter<Filter> { public: - template <class V> - optional<Filter> operator()(const V& value, Error& error) const { - if (!isArray(value)) { - error = { "filter expression must be an array" }; - return {}; - } - - if (arrayLength(value) < 1) { - error = { "filter expression must have at least 1 element" }; - return {}; - } - - optional<std::string> op = toString(arrayMember(value, 0)); - if (!op) { - error = { "filter operator must be a string" }; - return {}; - } - - if (*op == "==") { - return convertEqualityFilter<EqualsFilter, TypeEqualsFilter, IdentifierEqualsFilter>(value, error); - } else if (*op == "!=") { - return convertEqualityFilter<NotEqualsFilter, TypeNotEqualsFilter, IdentifierNotEqualsFilter>(value, error); - } else if (*op == ">") { - return convertBinaryFilter<GreaterThanFilter>(value, error); - } else if (*op == ">=") { - return convertBinaryFilter<GreaterThanEqualsFilter>(value, error); - } else if (*op == "<") { - return convertBinaryFilter<LessThanFilter>(value, error); - } else if (*op == "<=") { - return convertBinaryFilter<LessThanEqualsFilter>(value, error); - } else if (*op == "in") { - return convertSetFilter<InFilter, TypeInFilter, IdentifierInFilter>(value, error); - } else if (*op == "!in") { - return convertSetFilter<NotInFilter, TypeNotInFilter, IdentifierNotInFilter>(value, error); - } else if (*op == "all") { - return convertCompoundFilter<AllFilter>(value, error); - } else if (*op == "any") { - return convertCompoundFilter<AnyFilter>(value, error); - } else if (*op == "none") { - return convertCompoundFilter<NoneFilter>(value, error); - } else if (*op == "has") { - return convertUnaryFilter<HasFilter, HasIdentifierFilter>(value, error); - } else if (*op == "!has") { - return convertUnaryFilter<NotHasFilter, NotHasIdentifierFilter>(value, error); - } - - error = { R"(filter operator must be one of "==", "!=", ">", ">=", "<", "<=", "in", "!in", "all", "any", "none", "has", or "!has")" }; - return {}; - } - -private: - optional<Value> normalizeValue(const optional<Value>& value, Error& error) const { - if (!value) { - error = { "filter expression value must be a boolean, number, or string" }; - return {}; - } else { - return *value; - } - } - - template <class V> - optional<FeatureType> toFeatureType(const V& value, Error& error) const { - optional<std::string> type = toString(value); - if (!type) { - error = { "value for $type filter must be a string" }; - return {}; - } else if (*type == "Point") { - return FeatureType::Point; - } else if (*type == "LineString") { - return FeatureType::LineString; - } else if (*type == "Polygon") { - return FeatureType::Polygon; - } else { - error = { "value for $type filter must be Point, LineString, or Polygon" }; - return {}; - } - } - - template <class V> - optional<FeatureIdentifier> toFeatureIdentifier(const V& value, Error& error) const { - optional<Value> identifier = toValue(value); - if (!identifier) { - error = { "filter expression value must be a boolean, number, or string" }; - return {}; - } else { - return (*identifier).match( - [] (uint64_t t) -> optional<FeatureIdentifier> { return { t }; }, - [] ( int64_t t) -> optional<FeatureIdentifier> { return { t }; }, - [] ( double t) -> optional<FeatureIdentifier> { return { t }; }, - [] (const std::string& t) -> optional<FeatureIdentifier> { return { t }; }, - [&] (const auto&) -> optional<FeatureIdentifier> { - error = { "filter expression value must be a boolean, number, or string" }; - return {}; - }); - } - } - - template <class FilterType, class IdentifierFilterType, class V> - optional<Filter> convertUnaryFilter(const V& value, Error& error) const { - if (arrayLength(value) < 2) { - error = { "filter expression must have 2 elements" }; - return {}; - } - - optional<std::string> key = toString(arrayMember(value, 1)); - if (!key) { - error = { "filter expression key must be a string" }; - return {}; - } - - if (*key == "$id") { - return { IdentifierFilterType {} }; - } else { - return { FilterType { *key } }; - } - } - - template <class FilterType, class TypeFilterType, class IdentifierFilterType, class V> - optional<Filter> convertEqualityFilter(const V& value, Error& error) const { - if (arrayLength(value) < 3) { - error = { "filter expression must have 3 elements" }; - return {}; - } - - optional<std::string> key = toString(arrayMember(value, 1)); - if (!key) { - error = { "filter expression key must be a string" }; - return {}; - } - - if (*key == "$type") { - optional<FeatureType> filterValue = toFeatureType(arrayMember(value, 2), error); - if (!filterValue) { - return {}; - } - - return { TypeFilterType { *filterValue } }; - - } else if (*key == "$id") { - optional<FeatureIdentifier> filterValue = toFeatureIdentifier(arrayMember(value, 2), error); - if (!filterValue) { - return {}; - } - - return { IdentifierFilterType { *filterValue } }; - - } else { - optional<Value> filterValue = normalizeValue(toValue(arrayMember(value, 2)), error); - if (!filterValue) { - return {}; - } - - return { FilterType { *key, *filterValue } }; - } - } - - template <class FilterType, class V> - optional<Filter> convertBinaryFilter(const V& value, Error& error) const { - if (arrayLength(value) < 3) { - error = { "filter expression must have 3 elements" }; - return {}; - } - - optional<std::string> key = toString(arrayMember(value, 1)); - if (!key) { - error = { "filter expression key must be a string" }; - return {}; - } - - optional<Value> filterValue = normalizeValue(toValue(arrayMember(value, 2)), error); - if (!filterValue) { - return {}; - } - - return { FilterType { *key, *filterValue } }; - } - - template <class FilterType, class TypeFilterType, class IdentifierFilterType, class V> - optional<Filter> convertSetFilter(const V& value, Error& error) const { - if (arrayLength(value) < 2) { - error = { "filter expression must at least 2 elements" }; - return {}; - } - - optional<std::string> key = toString(arrayMember(value, 1)); - if (!key) { - error = { "filter expression key must be a string" }; - return {}; - } - - if (*key == "$type") { - std::vector<FeatureType> values; - for (std::size_t i = 2; i < arrayLength(value); ++i) { - optional<FeatureType> filterValue = toFeatureType(arrayMember(value, i), error); - if (!filterValue) { - return {}; - } - values.push_back(*filterValue); - } - - return { TypeFilterType { std::move(values) } }; - - } else if (*key == "$id") { - std::vector<FeatureIdentifier> values; - for (std::size_t i = 2; i < arrayLength(value); ++i) { - optional<FeatureIdentifier> filterValue = toFeatureIdentifier(arrayMember(value, i), error); - if (!filterValue) { - return {}; - } - values.push_back(*filterValue); - } - - return { IdentifierFilterType { std::move(values) } }; - - } else { - std::vector<Value> values; - for (std::size_t i = 2; i < arrayLength(value); ++i) { - optional<Value> filterValue = normalizeValue(toValue(arrayMember(value, i)), error); - if (!filterValue) { - return {}; - } - values.push_back(*filterValue); - } - - return { FilterType { *key, std::move(values) } }; - } - } - - template <class FilterType, class V> - optional<Filter> convertCompoundFilter(const V& value, Error& error) const { - std::vector<Filter> filters; - for (std::size_t i = 1; i < arrayLength(value); ++i) { - optional<Filter> element = operator()(arrayMember(value, i), error); - if (!element) { - return {}; - } - filters.push_back(*element); - } - - return { FilterType { std::move(filters) } }; - } + optional<Filter> operator()(const Convertible& value, Error& error) const; }; } // namespace conversion |