src/main/interactive_shell.h

   1 /*********************                                                        */
   2 /*! \file interactive_shell.h
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Morgan Deters, Christopher L. Conway, Aina Niemetz
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS
   8  ** in the top-level source directory) and their institutional affiliations.
   9  ** All rights reserved.  See the file COPYING in the top-level source
  10  ** directory for licensing information.\endverbatim
  11  **
  12  ** \brief Interactive shell for CVC4
  13  **/
  14
  15 #ifndef __CVC4__INTERACTIVE_SHELL_H
  16 #define __CVC4__INTERACTIVE_SHELL_H
  17
  18 #include <iosfwd>
  19 #include <string>
  20
  21 #include "options/language.h"
  22 #include "options/options.h"
  23 #include "util/unsafe_interrupt_exception.h"
  24
  25 namespace CVC4 {
  26
  27 class Command;
  28 class ExprManager;
  29 class Options;
  30
  31 namespace parser {
  32   class Parser;
  33 }/* CVC4::parser namespace */
  34
  35 class CVC4_PUBLIC InteractiveShell
  36 {
  37   const Options& d_options;
  38   std::istream& d_in;
  39   std::ostream& d_out;
  40   parser::Parser* d_parser;
  41   bool d_quit;
  42   bool d_usingReadline;
  43
  44   std::string d_historyFilename;
  45
  46   static const std::string INPUT_FILENAME;
  47   static const unsigned s_historyLimit = 500;
  48
  49 public:
  50  InteractiveShell(ExprManager& exprManager);
  51
  52  /**
  53   * Close out the interactive session.
  54   */
  55  ~InteractiveShell();
  56
  57  /**
  58   * Read a command from the interactive shell. This will read as
  59   * many lines as necessary to parse a well-formed command.
  60   */
  61  Command* readCommand();
  62
  63  /**
  64   * Return the internal parser being used.
  65   */
  66  parser::Parser* getParser() { return d_parser; }
  67
  68 };/* class InteractiveShell */
  69
  70 }/* CVC4 namespace */
  71
  72 #endif /* __CVC4__INTERACTIVE_SHELL_H */