81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_INSPECTOR_SCALAR_H_
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#define SRC_INSPECTOR_SCALAR_H_
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#include <cstdint>
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namespace tint {
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namespace inspector {
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/// Contains a literal scalar value
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class Scalar {
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public:
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/// Null Constructor
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Scalar();
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/// @param val literal scalar value to contain
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explicit Scalar(bool val);
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/// @param val literal scalar value to contain
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explicit Scalar(uint32_t val);
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/// @param val literal scalar value to contain
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explicit Scalar(int32_t val);
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/// @param val literal scalar value to contain
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explicit Scalar(float val);
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/// @returns true if this is a null
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bool IsNull() const;
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/// @returns true if this is a bool
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bool IsBool() const;
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/// @returns true if this is a unsigned integer.
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bool IsU32() const;
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/// @returns true if this is a signed integer.
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bool IsI32() const;
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/// @returns true if this is a float.
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bool IsFloat() const;
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/// @returns scalar value if bool, otherwise undefined behaviour.
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bool AsBool() const;
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/// @returns scalar value if unsigned integer, otherwise undefined behaviour.
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uint32_t AsU32() const;
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/// @returns scalar value if signed integer, otherwise undefined behaviour.
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int32_t AsI32() const;
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/// @returns scalar value if float, otherwise undefined behaviour.
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float AsFloat() const;
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private:
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typedef enum {
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kNull,
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kBool,
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kU32,
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kI32,
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kFloat,
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} Type;
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typedef union {
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bool b;
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uint32_t u;
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int32_t i;
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float f;
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} Value;
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Type type_;
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Value value_;
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};
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} // namespace inspector
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} // namespace tint
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#endif // SRC_INSPECTOR_SCALAR_H_
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