| 1 | #pragma once |
|---|---|
| 2 | |
| 3 | #include <mbgl/style/expression/expression.hpp> |
| 4 | #include <mbgl/style/expression/parsing_context.hpp> |
| 5 | #include <mbgl/style/conversion.hpp> |
| 6 | |
| 7 | #include <memory> |
| 8 | |
| 9 | namespace mbgl { |
| 10 | namespace style { |
| 11 | namespace expression { |
| 12 | |
| 13 | class Literal : public Expression { |
| 14 | public: |
| 15 | Literal(Value value_) |
| 16 | : Expression(Kind::Literal, typeOf(value: value_)) |
| 17 | , value(value_) |
| 18 | {} |
| 19 | |
| 20 | Literal(type::Array type_, std::vector<Value> value_) |
| 21 | : Expression(Kind::Literal, type_) |
| 22 | , value(value_) |
| 23 | {} |
| 24 | |
| 25 | EvaluationResult evaluate(const EvaluationContext&) const override { |
| 26 | return value; |
| 27 | } |
| 28 | |
| 29 | static ParseResult parse(const mbgl::style::conversion::Convertible&, ParsingContext&); |
| 30 | |
| 31 | void eachChild(const std::function<void(const Expression&)>&) const override {} |
| 32 | |
| 33 | bool operator==(const Expression& e) const override { |
| 34 | if (e.getKind() == Kind::Literal) { |
| 35 | auto rhs = static_cast<const Literal*>(&e); |
| 36 | return value == rhs->value; |
| 37 | } |
| 38 | return false; |
| 39 | } |
| 40 | |
| 41 | std::vector<optional<Value>> possibleOutputs() const override { |
| 42 | return {{ value }}; |
| 43 | } |
| 44 | |
| 45 | Value getValue() const { |
| 46 | return value; |
| 47 | } |
| 48 | |
| 49 | mbgl::Value serialize() const override; |
| 50 | std::string getOperator() const override { return "literal"; } |
| 51 | |
| 52 | private: |
| 53 | Value value; |
| 54 | }; |
| 55 | |
| 56 | } // namespace expression |
| 57 | } // namespace style |
| 58 | } // namespace mbgl |
| 59 |