diff options
Diffstat (limited to 'src/mbgl/style/conversion/stringify.hpp')
-rw-r--r-- | src/mbgl/style/conversion/stringify.hpp | 159 |
1 files changed, 3 insertions, 156 deletions
diff --git a/src/mbgl/style/conversion/stringify.hpp b/src/mbgl/style/conversion/stringify.hpp index 7b7727d7c4..74171763a0 100644 --- a/src/mbgl/style/conversion/stringify.hpp +++ b/src/mbgl/style/conversion/stringify.hpp @@ -126,162 +126,9 @@ void stringify(Writer& writer, const FeatureIdentifier& id) { } template <class Writer> -class StringifyFilter { -public: - Writer& writer; - - void operator()(const NullFilter&) { - writer.Null(); - } - - void operator()(const EqualsFilter& f) { - stringifyBinaryFilter(f, "=="); - } - - void operator()(const NotEqualsFilter& f) { - stringifyBinaryFilter(f, "!="); - } - - void operator()(const LessThanFilter& f) { - stringifyBinaryFilter(f, "<"); - } - - void operator()(const LessThanEqualsFilter& f) { - stringifyBinaryFilter(f, "<="); - } - - void operator()(const GreaterThanFilter& f) { - stringifyBinaryFilter(f, ">"); - } - - void operator()(const GreaterThanEqualsFilter& f) { - stringifyBinaryFilter(f, ">="); - } - - void operator()(const InFilter& f) { - stringifySetFilter(f, "in"); - } - - void operator()(const NotInFilter& f) { - stringifySetFilter(f, "!in"); - } - - void operator()(const AllFilter& f) { - stringifyCompoundFilter(f, "all"); - } - - void operator()(const AnyFilter& f) { - stringifyCompoundFilter(f, "any"); - } - - void operator()(const NoneFilter& f) { - stringifyCompoundFilter(f, "none"); - } - - void operator()(const HasFilter& f) { - stringifyUnaryFilter("has", f.key); - } - - void operator()(const NotHasFilter& f) { - stringifyUnaryFilter("!has", f.key); - } - - void operator()(const TypeEqualsFilter& f) { - stringifyBinaryFilter(f, "==", "$type"); - } - - void operator()(const TypeNotEqualsFilter& f) { - stringifyBinaryFilter(f, "!=", "$type"); - } - - void operator()(const TypeInFilter& f) { - stringifySetFilter(f, "in", "$type"); - } - - void operator()(const TypeNotInFilter& f) { - stringifySetFilter(f, "!in", "$type"); - } - - void operator()(const IdentifierEqualsFilter& f) { - stringifyBinaryFilter(f, "==", "$id"); - } - - void operator()(const IdentifierNotEqualsFilter& f) { - stringifyBinaryFilter(f, "!=", "$id"); - } - - void operator()(const IdentifierInFilter& f) { - stringifySetFilter(f, "in", "$id"); - } - - void operator()(const IdentifierNotInFilter& f) { - stringifySetFilter(f, "!in", "$id"); - } - - void operator()(const HasIdentifierFilter&) { - stringifyUnaryFilter("has", "$id"); - } - - void operator()(const NotHasIdentifierFilter&) { - stringifyUnaryFilter("!has", "$id"); - } - - void operator()(const ExpressionFilter& filter) { - stringify(writer, filter.expression->serialize()); - } - -private: - template <class F> - void stringifyBinaryFilter(const F& f, const char * op) { - stringifyBinaryFilter(f, op, f.key); - } - - template <class F> - void stringifyBinaryFilter(const F& f, const char * op, const std::string& key) { - writer.StartArray(); - writer.String(op); - writer.String(key); - stringify(writer, f.value); - writer.EndArray(); - } - - template <class F> - void stringifySetFilter(const F& f, const char * op) { - stringifySetFilter(f, op, f.key); - } - - template <class F> - void stringifySetFilter(const F& f, const char * op, const std::string& key) { - writer.StartArray(); - writer.String(op); - writer.String(key); - for (const auto& value : f.values) { - stringify(writer, value); - } - writer.EndArray(); - } - - template <class F> - void stringifyCompoundFilter(const F& f, const char * op) { - writer.StartArray(); - writer.String(op); - for (const auto& filter : f.filters) { - Filter::visit(filter, *this); - } - writer.EndArray(); - } - - void stringifyUnaryFilter(const char * op, const std::string& key) { - writer.StartArray(); - writer.String(op); - writer.String(key); - writer.EndArray(); - } -}; - -template <class Writer> -void stringify(Writer& writer, const Filter& f) { - Filter::visit(f, StringifyFilter<Writer> { writer }); +void stringify(Writer& writer, const Filter& filter) { + if (!filter.expression) writer.Null(); + else stringify(writer, (*filter.expression)->serialize()); } template <class Writer> |