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1 // Copyright 2021 The Tint Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef SRC_SEM_BEHAVIOR_H_
16 #define SRC_SEM_BEHAVIOR_H_
17 
18 #include "src/utils/enum_set.h"
19 
20 namespace tint {
21 namespace sem {
22 
23 /// Behavior enumerates the possible behaviors of an expression or statement.
24 /// @see https://www.w3.org/TR/WGSL/#behaviors
25 enum class Behavior {
26   kReturn,
27   kDiscard,
28   kBreak,
29   kContinue,
30   kFallthrough,
31   kNext,
32 };
33 
34 /// Behaviors is a set of Behavior
35 using Behaviors = utils::EnumSet<Behavior>;
36 
37 /// Writes the Behavior to the std::ostream.
38 /// @param out the std::ostream to write to
39 /// @param behavior the Behavior to write
40 /// @returns out so calls can be chained
41 std::ostream& operator<<(std::ostream& out, Behavior behavior);
42 
43 }  // namespace sem
44 }  // namespace tint
45 
46 #endif  // SRC_SEM_BEHAVIOR_H_
47