text: //===--- ASTConsumers.h - ASTConsumer implementations -----------*- C++ -*-===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is distributed under the University of Illinois Open Source
  // License. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  //
  // AST Consumers.
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef LLVM_CLANG_FRONTEND_ASTCONSUMERS_H
  #define LLVM_CLANG_FRONTEND_ASTCONSUMERS_H
  
  #include "clang/Basic/LLVM.h"
  #include <memory>
  
  namespace clang {
  
  class ASTConsumer;
  class CodeGenOptions;
  class DiagnosticsEngine;
  class FileManager;
  class LangOptions;
  class Preprocessor;
  class TargetOptions;
  
  // AST pretty-printer: prints out the AST in a format that is close to the
  // original C code.  The output is intended to be in a format such that
  // clang could re-parse the output back into the same AST, but the
  // implementation is still incomplete.
  std::unique_ptr<ASTConsumer> CreateASTPrinter(std::unique_ptr<raw_ostream> OS,
                                                StringRef FilterString);
  
  // AST dumper: dumps the raw AST in human-readable form to stderr; this is
  // intended for debugging.
  std::unique_ptr<ASTConsumer> CreateASTDumper(StringRef FilterString,
                                               bool DumpDecls,
                                               bool DumpLookups);
  
  // AST Decl node lister: prints qualified names of all filterable AST Decl
  // nodes.
  std::unique_ptr<ASTConsumer> CreateASTDeclNodeLister();
  
  // Graphical AST viewer: for each function definition, creates a graph of
  // the AST and displays it with the graph viewer "dotty".  Also outputs
  // function declarations to stderr.
  std::unique_ptr<ASTConsumer> CreateASTViewer();
  
  // DeclContext printer: prints out the DeclContext tree in human-readable form
  // to stderr; this is intended for debugging.
  std::unique_ptr<ASTConsumer> CreateDeclContextPrinter();
  
  } // end clang namespace
  
  #endif
  