ExternalSemaSource.h revision 208954 
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/DeclObjC.h"
17#include "clang/AST/ExternalASTSource.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  /// \brief Initialize the semantic source with the Sema instance
33  /// being used to perform semantic analysis on the abstract syntax
34  /// tree.
35  virtual void InitializeSema(Sema &S) {}
36
37  /// \brief Inform the semantic consumer that Sema is no longer available.
38  virtual void ForgetSema() {}
39
40  /// \brief Load the contents of the global method pool for a given
41  /// selector.
42  ///
43  /// \returns a pair of Objective-C methods lists containing the
44  /// instance and factory methods, respectively, with this selector.
45  virtual std::pair<ObjCMethodList, ObjCMethodList>
46  ReadMethodPool(Selector Sel) {
47    return std::pair<ObjCMethodList, ObjCMethodList>();
48  }
49
50  // isa/cast/dyn_cast support
51  static bool classof(const ExternalASTSource *Source) {
52    return Source->SemaSource;
53  }
54  static bool classof(const ExternalSemaSource *) { return true; }
55};
56
57} // end namespace clang
58
59#endif
60