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 
20 namespace pp
21 {
22 
23 struct 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.
29 class 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