Files
MapLibreParticleLab/include/mbgl/style/expression/array_assertion.hpp
Chris Loer 75feda12f1 [core] Implement Expression::serialize()
Issue #10714
- Each expression stores its operator as a string, and default serialization is [operator, serialize(child1), ...]
- Custom implementations of `serialize` for Expression types that don't follow the pattern
- expression::Value -> mbgl::Value converter
- node_expression bindings to expose `serialize`
2018-02-28 16:09:09 -08:00

47 lines
1.3 KiB
C++

#pragma once
#include <mbgl/style/expression/expression.hpp>
#include <mbgl/style/expression/type.hpp>
#include <mbgl/style/expression/parsing_context.hpp>
#include <mbgl/style/conversion.hpp>
#include <memory>
namespace mbgl {
namespace style {
namespace expression {
class ArrayAssertion : public Expression {
public:
ArrayAssertion(type::Array type_, std::unique_ptr<Expression> input_) :
Expression(type_),
input(std::move(input_))
{}
static ParseResult parse(const mbgl::style::conversion::Convertible& value, ParsingContext& ctx);
EvaluationResult evaluate(const EvaluationContext& params) const override;
void eachChild(const std::function<void(const Expression&)>& visit) const override;
bool operator==(const Expression& e) const override {
if (auto rhs = dynamic_cast<const ArrayAssertion*>(&e)) {
return getType() == rhs->getType() && *input == *(rhs->input);
}
return false;
}
std::vector<optional<Value>> possibleOutputs() const override {
return input->possibleOutputs();
}
mbgl::Value serialize() const override;
std::string getOperator() const override { return "array"; }
private:
std::unique_ptr<Expression> input;
};
} // namespace expression
} // namespace style
} // namespace mbgl