| 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. |
| 26 | class ExternalPreprocessorSource { |
| 27 | public: |
| 28 | virtual ~ExternalPreprocessorSource(); |
| 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| 33 | /// Update an out-of-date identifier.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 |
| 48 |