1// Copyright 2017 The SwiftShader Authors. All Rights Reserved.
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 COMPILER_PREPROCESSOR_DIRECTIVEHANDLERBASE_H_
16#define COMPILER_PREPROCESSOR_DIRECTIVEHANDLERBASE_H_
17
18#include <string>
19
20namespace pp
21{
22
23struct SourceLocation;
24
25// Base class for handling directives.
26// Preprocessor uses this class to notify the clients about certain
27// preprocessor directives. Derived classes are responsible for
28// handling them in an appropriate manner.
29class DirectiveHandler
30{
31 public:
32 virtual ~DirectiveHandler();
33
34 virtual void handleError(const SourceLocation &loc, const std::string &msg) = 0;
35
36 // Handle pragma of form: #pragma name[(value)]
37 virtual void handlePragma(const SourceLocation &loc,
38 const std::string &name,
39 const std::string &value,
40 bool stdgl) = 0;
41
42 virtual void handleExtension(const SourceLocation &loc,
43 const std::string &name,
44 const std::string &behavior) = 0;
45
46 virtual void handleVersion(const SourceLocation &loc, int version) = 0;
47};
48
49} // namespace pp
50
51#endif // COMPILER_PREPROCESSOR_DIRECTIVEHANDLERBASE_H_
52