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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_INSPECTOR_SCALAR_H_
#define SRC_INSPECTOR_SCALAR_H_
#include <cstdint>
namespace tint {
namespace inspector {
/// Contains a literal scalar value
class Scalar {
public:
/// Null Constructor
Scalar();
/// @param val literal scalar value to contain
explicit Scalar(bool val);
/// @param val literal scalar value to contain
explicit Scalar(uint32_t val);
/// @param val literal scalar value to contain
explicit Scalar(int32_t val);
/// @param val literal scalar value to contain
explicit Scalar(float val);
/// @returns true if this is a null
bool IsNull() const;
/// @returns true if this is a bool
bool IsBool() const;
/// @returns true if this is a unsigned integer.
bool IsU32() const;
/// @returns true if this is a signed integer.
bool IsI32() const;
/// @returns true if this is a float.
bool IsFloat() const;
/// @returns scalar value if bool, otherwise undefined behaviour.
bool AsBool() const;
/// @returns scalar value if unsigned integer, otherwise undefined behaviour.
uint32_t AsU32() const;
/// @returns scalar value if signed integer, otherwise undefined behaviour.
int32_t AsI32() const;
/// @returns scalar value if float, otherwise undefined behaviour.
float AsFloat() const;
private:
typedef enum {
kNull,
kBool,
kU32,
kI32,
kFloat,
} Type;
typedef union {
bool b;
uint32_t u;
int32_t i;
float f;
} Value;
Type type_;
Value value_;
};
} // namespace inspector
} // namespace tint
#endif // SRC_INSPECTOR_SCALAR_H_