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#include <mbgl/style/expression/is_expression.hpp>
#include <mbgl/style/expression/compound_expression.hpp>
#include <mbgl/style/expression/parsing_context.hpp>
#include <mbgl/style/conversion_impl.hpp>
#include <unordered_set>
namespace mbgl {
namespace style {
namespace expression {
using namespace mbgl::style::conversion;
bool isExpression(const Convertible& value) {
if (!isArray(value) || arrayLength(value) == 0) return false;
optional<std::string> name = toString(arrayMember(value, 0));
if (!name) return false;
return isExpression(*name) || CompoundExpression::exists(*name);
}
} // namespace expression
} // namespace style
} // namespace mbgl
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