clang  10.0.0svn
ExternalPreprocessorSource.h
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1 //===- ExternalPreprocessorSource.h - Abstract Macro Interface --*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file defines the ExternalPreprocessorSource interface, which enables
10 // construction of macro definitions from some external source.
11 //
12 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_CLANG_LEX_EXTERNALPREPROCESSORSOURCE_H
14 #define LLVM_CLANG_LEX_EXTERNALPREPROCESSORSOURCE_H
15 
16 namespace clang {
17 
18 class IdentifierInfo;
19 class Module;
20 
21 /// Abstract interface for external sources of preprocessor
22 /// information.
23 ///
24 /// This abstract class allows an external sources (such as the \c ASTReader)
25 /// to provide additional preprocessing information.
27 public:
29 
30  /// Read the set of macros defined by this external macro source.
31  virtual void ReadDefinedMacros() = 0;
32 
33  /// Update an out-of-date identifier.
34  virtual void updateOutOfDateIdentifier(IdentifierInfo &II) = 0;
35 
36  /// Return the identifier associated with the given ID number.
37  ///
38  /// The ID 0 is associated with the NULL identifier.
39  virtual IdentifierInfo *GetIdentifier(unsigned ID) = 0;
40 
41  /// Map a module ID to a module.
42  virtual Module *getModule(unsigned ModuleID) = 0;
43 };
44 
45 }
46 
47 #endif
virtual IdentifierInfo * GetIdentifier(unsigned ID)=0
Return the identifier associated with the given ID number.
One of these records is kept for each identifier that is lexed.
Describes a module or submodule.
Definition: Module.h:64
Abstract interface for external sources of preprocessor information.
virtual void ReadDefinedMacros()=0
Read the set of macros defined by this external macro source.
Dataflow Directional Tag Classes.
virtual Module * getModule(unsigned ModuleID)=0
Map a module ID to a module.
virtual void updateOutOfDateIdentifier(IdentifierInfo &II)=0
Update an out-of-date identifier.