ExternalSemaSource.h revision 212904 
1//===--- ExternalSemaSource.h - External Sema Interface ---------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//  This file defines the ExternalSemaSource interface.
11//
12//===----------------------------------------------------------------------===//
13#ifndef LLVM_CLANG_SEMA_EXTERNAL_SEMA_SOURCE_H
14#define LLVM_CLANG_SEMA_EXTERNAL_SEMA_SOURCE_H
15
16#include "clang/AST/ExternalASTSource.h"
17#include "clang/Sema/ObjCMethodList.h"
18
19namespace clang {
20
21class Sema;
22
23/// \brief An abstract interface that should be implemented by
24/// external AST sources that also provide information for semantic
25/// analysis.
26class ExternalSemaSource : public ExternalASTSource {
27public:
28  ExternalSemaSource() {
29    ExternalASTSource::SemaSource = true;
30  }
31
32  ~ExternalSemaSource();
33
34  /// \brief Initialize the semantic source with the Sema instance
35  /// being used to perform semantic analysis on the abstract syntax
36  /// tree.
37  virtual void InitializeSema(Sema &S) {}
38
39  /// \brief Inform the semantic consumer that Sema is no longer available.
40  virtual void ForgetSema() {}
41
42  /// \brief Load the contents of the global method pool for a given
43  /// selector.
44  ///
45  /// \returns a pair of Objective-C methods lists containing the
46  /// instance and factory methods, respectively, with this selector.
47  virtual std::pair<ObjCMethodList, ObjCMethodList>
48  ReadMethodPool(Selector Sel) {
49    return std::pair<ObjCMethodList, ObjCMethodList>();
50  }
51
52  // isa/cast/dyn_cast support
53  static bool classof(const ExternalASTSource *Source) {
54    return Source->SemaSource;
55  }
56  static bool classof(const ExternalSemaSource *) { return true; }
57};
58
59} // end namespace clang
60
61#endif
62