1//===- llvm/TableGen/TableGenAction.h - defines TableGenAction --*- 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 TableGenAction base class to be derived from by
11// tblgen tools.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_TABLEGEN_TABLEGENACTION_H
16#define LLVM_TABLEGEN_TABLEGENACTION_H
17
18namespace llvm {
19
20class raw_ostream;
21class RecordKeeper;
22
23class TableGenAction {
24  virtual void anchor();
25public:
26  virtual ~TableGenAction() {}
27
28  /// Perform the action using Records, and write output to OS.
29  /// @returns true on error, false otherwise
30  virtual bool operator()(raw_ostream &OS, RecordKeeper &Records) = 0;
31};
32
33}
34
35#endif
36