Constraints.h

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#pragma once

#include <wtf/OptionSet.h>

namespace WGSL {

struct Type;
class TypeStore;


using Constraint = uint8_t;

namespace Constraints {

constexpr Constraint None = 0;

constexpr Constraint Bool          = 1 << 0;
constexpr Constraint AbstractInt   = 1 << 1;
constexpr Constraint I32           = 1 << 2;
constexpr Constraint U32           = 1 << 3;
constexpr Constraint AbstractFloat = 1 << 4;
constexpr Constraint F32           = 1 << 5;
constexpr Constraint F16           = 1 << 6;

constexpr Constraint ConcreteFloat = F16 | F32;
constexpr Constraint Float = ConcreteFloat | AbstractFloat;

constexpr Constraint ConcreteInteger = I32 | U32;
constexpr Constraint Integer = ConcreteInteger | AbstractInt;
constexpr Constraint SignedInteger = I32 | AbstractInt;

constexpr Constraint Scalar = Bool | Integer | Float;
constexpr Constraint ConcreteScalar = Bool | ConcreteInteger | ConcreteFloat;

constexpr Constraint Concrete32BitNumber = ConcreteInteger | F32;

constexpr Constraint SignedNumber = Float | SignedInteger;
constexpr Constraint Number = Float | Integer;

}

bool satisfies(const Type*, Constraint);
const Type* satisfyOrPromote(const Type*, Constraint, const TypeStore&);
const Type* concretize(const Type*, TypeStore&);

} // namespace WGSL