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#pragma once
#include <memory>
#include <mbgl/style/expression/parse.hpp>
#include <mbgl/style/expression/type.hpp>
#include <mbgl/style/conversion.hpp>
namespace mbgl {
namespace style {
namespace conversion {
using namespace mbgl::style::expression;
template<> struct Converter<std::unique_ptr<Expression>> {
template <class V>
optional<std::unique_ptr<Expression>> operator()(const V& value, Error& error, type::Type expected) const {
std::vector<ParsingError> errors;
auto parsed = parseExpression(value, ParsingContext(errors, expected));
if (parsed) {
return std::move(*parsed);
}
std::string combinedError;
for (const ParsingError& parsingError : errors) {
if (combinedError.size() > 0) {
combinedError += "\n";
}
combinedError += parsingError.key + ": " + parsingError.message;
}
error = { combinedError };
return {};
};
};
} // namespace conversion
} // namespace style
} // namespace mbgl
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