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// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_SEM_TYPE_H_
#define SRC_SEM_TYPE_H_
#include <string>
#include "src/sem/node.h"
namespace tint {
// Forward declarations
class ProgramBuilder;
class SymbolTable;
namespace sem {
/// Supported memory layouts for calculating sizes
enum class MemoryLayout { kUniformBuffer, kStorageBuffer };
/// Base class for a type in the system
class Type : public Castable<Type, Node> {
public:
/// Move constructor
Type(Type&&);
~Type() override;
/// @returns the name for this type. The type name is unique over all types.
virtual std::string type_name() const = 0;
/// @param symbols the program's symbol table
/// @returns the name for this type that closely resembles how it would be
/// declared in WGSL.
virtual std::string FriendlyName(const SymbolTable& symbols) const = 0;
/// @returns the inner most pointee type if this is a pointer, `this`
/// otherwise
const Type* UnwrapPtr() const;
/// @returns the inner type if this is a reference, `this` otherwise
const Type* UnwrapRef() const;
/// @returns the size in bytes of the type. This may include tail padding.
/// @note opaque types will return a size of 0.
virtual uint32_t Size() const;
/// @returns the alignment in bytes of the type. This may include tail
/// padding.
/// @note opaque types will return a size of 0.
virtual uint32_t Align() const;
/// @returns true if constructible as per
/// https://gpuweb.github.io/gpuweb/wgsl/#constructible-types
virtual bool IsConstructible() const;
/// @returns true if this type is a scalar
bool is_scalar() const;
/// @returns true if this type is a numeric scalar
bool is_numeric_scalar() const;
/// @returns true if this type is a float scalar
bool is_float_scalar() const;
/// @returns true if this type is a float matrix
bool is_float_matrix() const;
/// @returns true if this type is a float vector
bool is_float_vector() const;
/// @returns true if this type is a float scalar or vector
bool is_float_scalar_or_vector() const;
/// @returns true if this type is a float scalar or vector or matrix
bool is_float_scalar_or_vector_or_matrix() const;
/// @returns true if this type is an integer scalar
bool is_integer_scalar() const;
/// @returns true if this type is a signed integer scalar
bool is_signed_integer_scalar() const;
/// @returns true if this type is an unsigned integer scalar
bool is_unsigned_integer_scalar() const;
/// @returns true if this type is a signed integer vector
bool is_signed_integer_vector() const;
/// @returns true if this type is an unsigned vector
bool is_unsigned_integer_vector() const;
/// @returns true if this type is an unsigned scalar or vector
bool is_unsigned_scalar_or_vector() const;
/// @returns true if this type is a signed scalar or vector
bool is_signed_scalar_or_vector() const;
/// @returns true if this type is an integer scalar or vector
bool is_integer_scalar_or_vector() const;
/// @returns true if this type is a boolean vector
bool is_bool_vector() const;
/// @returns true if this type is boolean scalar or vector
bool is_bool_scalar_or_vector() const;
/// @returns true if this type is a numeric vector
bool is_numeric_vector() const;
/// @returns true if this type is a vector of scalar type
bool is_scalar_vector() const;
/// @returns true if this type is a numeric scale or vector
bool is_numeric_scalar_or_vector() const;
/// @returns true if this type is a handle type
bool is_handle() const;
protected:
Type();
};
} // namespace sem
} // namespace tint
#endif // SRC_SEM_TYPE_H_