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