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