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) 2009-2019 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 Options;
  29
  30 namespace api {
  31 class Solver;
  32 }
  33
  34 namespace parser {
  35   class Parser;
  36 }/* CVC4::parser namespace */
  37
  38 class CVC4_PUBLIC InteractiveShell
  39 {
  40   const Options& d_options;
  41   std::istream& d_in;
  42   std::ostream& d_out;
  43   parser::Parser* d_parser;
  44   bool d_quit;
  45   bool d_usingReadline;
  46
  47   std::string d_historyFilename;
  48
  49   static const std::string INPUT_FILENAME;
  50   static const unsigned s_historyLimit = 500;
  51
  52 public:
  53  InteractiveShell(api::Solver* solver);
  54
  55  /**
  56   * Close out the interactive session.
  57   */
  58  ~InteractiveShell();
  59
  60  /**
  61   * Read a command from the interactive shell. This will read as
  62   * many lines as necessary to parse a well-formed command.
  63   */
  64  Command* readCommand();
  65
  66  /**
  67   * Return the internal parser being used.
  68   */
  69  parser::Parser* getParser() { return d_parser; }
  70
  71 };/* class InteractiveShell */
  72
  73 }/* CVC4 namespace */
  74
  75 #endif /* __CVC4__INTERACTIVE_SHELL_H */