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