60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
#pragma once
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#include <mbgl/style/expression/expression.hpp>
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#include <mbgl/style/expression/parsing_context.hpp>
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namespace mbgl {
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namespace style {
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namespace expression {
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struct FormatExpressionSection {
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explicit FormatExpressionSection(std::unique_ptr<Expression> content_);
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void setTextSectionOptions(std::unique_ptr<Expression>&& fontScale_,
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std::unique_ptr<Expression>&& textFont_,
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std::unique_ptr<Expression>&& textColor_);
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// Content can be expression that evaluates to String or Image.
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std::shared_ptr<Expression> content;
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// Text related section options.
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std::shared_ptr<Expression> fontScale;
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std::shared_ptr<Expression> textFont;
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std::shared_ptr<Expression> textColor;
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};
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class FormatExpression final : public Expression {
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public:
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explicit FormatExpression(std::vector<FormatExpressionSection> sections);
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EvaluationResult evaluate(const EvaluationContext&) const override;
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static ParseResult parse(const mbgl::style::conversion::Convertible&, ParsingContext&);
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void eachChild(const std::function<void(const Expression&)>&) const override;
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bool operator==(const Expression& e) const override;
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std::vector<std::optional<Value>> possibleOutputs() const override {
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// Technically the combinatoric set of all children
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// Usually, this.text will be undefined anyway
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return {std::nullopt};
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}
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const std::vector<FormatExpressionSection>& getSections() const { return sections; }
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mbgl::Value serialize() const override;
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std::string getOperator() const override { return "format"; }
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private:
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static Dependency depsOfSection(const FormatExpressionSection& s) {
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return depsOf(s.content) | depsOf(s.fontScale) | depsOf(s.textFont) | depsOf(s.textColor);
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}
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private:
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std::vector<FormatExpressionSection> sections;
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};
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} // namespace expression
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} // namespace style
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} // namespace mbgl
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