src/sem/bool_type.h

// 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_BOOL_TYPE_H_
#define SRC_SEM_BOOL_TYPE_H_

#include <string>

#include "src/sem/type.h"

// X11 likes to #define Bool leading to confusing error messages.
// If its defined, undefine it.
#ifdef Bool
#undef Bool
#endif

namespace tint {
namespace sem {

/// A boolean type
class Bool : public Castable<Bool, Type> {
 public:
  /// Constructor
  Bool();
  /// Move constructor
  Bool(Bool&&);
  ~Bool() override;

  /// @returns the name for this type
  std::string type_name() const override;

  /// @param symbols the program's symbol table
  /// @returns the name for this type that closely resembles how it would be
  /// declared in WGSL.
  std::string FriendlyName(const SymbolTable& symbols) const override;

  /// @returns true if constructible as per
  /// https://gpuweb.github.io/gpuweb/wgsl/#constructible-types
  bool IsConstructible() const override;

  /// @returns the size in bytes of the type.
  /// @note: booleans are not host-sharable, but still may exist in workgroup
  /// storage.
  uint32_t Size() const override;

  /// @returns the alignment in bytes of the type.
  /// @note: booleans are not host-sharable, but still may exist in workgroup
  /// storage.
  uint32_t Align() const override;
};

}  // namespace sem
}  // namespace tint

#endif  // SRC_SEM_BOOL_TYPE_H_