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#pragma once
#include <mbgl/util/optional.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/util/variant.hpp>
#include <vector>
namespace mbgl {
namespace style {
namespace expression {
namespace type {
template <class T>
std::string toString(const T& t);
struct NullType {
constexpr NullType() = default;
std::string getName() const { return "null"; }
bool operator==(const NullType&) const { return true; }
};
struct NumberType {
constexpr NumberType() = default;
std::string getName() const { return "number"; }
bool operator==(const NumberType&) const { return true; }
};
struct BooleanType {
constexpr BooleanType() = default;
std::string getName() const { return "boolean"; }
bool operator==(const BooleanType&) const { return true; }
};
struct StringType {
constexpr StringType() = default;
std::string getName() const { return "string"; }
bool operator==(const StringType&) const { return true; }
};
struct ColorType {
constexpr ColorType() = default;
std::string getName() const { return "color"; }
bool operator==(const ColorType&) const { return true; }
};
struct ObjectType {
constexpr ObjectType() = default;
std::string getName() const { return "object"; }
bool operator==(const ObjectType&) const { return true; }
};
struct ErrorType {
constexpr ErrorType() = default;
std::string getName() const { return "error"; }
bool operator==(const ErrorType&) const { return true; }
};
struct ValueType {
constexpr ValueType() = default;
std::string getName() const { return "value"; }
bool operator==(const ValueType&) const { return true; }
};
constexpr NullType Null;
constexpr NumberType Number;
constexpr StringType String;
constexpr BooleanType Boolean;
constexpr ColorType Color;
constexpr ValueType Value;
constexpr ObjectType Object;
constexpr ErrorType Error;
struct Array;
using Type = variant<
NullType,
NumberType,
BooleanType,
StringType,
ColorType,
ObjectType,
ValueType,
mapbox::util::recursive_wrapper<Array>,
ErrorType>;
struct Array {
explicit Array(Type itemType_) : itemType(std::move(itemType_)) {}
Array(Type itemType_, std::size_t N_) : itemType(std::move(itemType_)), N(N_) {}
Array(Type itemType_, optional<std::size_t> N_) : itemType(std::move(itemType_)), N(std::move(N_)) {}
std::string getName() const {
if (N) {
return "array<" + toString(itemType) + ", " + util::toString(*N) + ">";
} else if (itemType == Value) {
return "array";
} else {
return "array<" + toString(itemType) + ">";
}
}
bool operator==(const Array& rhs) const { return itemType == rhs.itemType && N == rhs.N; }
Type itemType;
optional<std::size_t> N;
};
template <class T>
std::string toString(const T& type) { return type.match([&] (const auto& t) { return t.getName(); }); }
} // namespace type
} // namespace expression
} // namespace style
} // namespace mbgl
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