src/main/interactive_shell.h

   1 /*********************                                                        */
   2 /*! \file interactive_shell.h
   3  ** \verbatim
   4  ** Original author: cconway
   5  ** Major contributors: mdeters
   6  ** Minor contributors (to current version): none
   7  ** This file is part of the CVC4 prototype.
   8  ** Copyright (c) 2009-2012  The Analysis of Computer Systems Group (ACSys)
   9  ** Courant Institute of Mathematical Sciences
  10  ** New York University
  11  ** See the file COPYING in the top-level source directory for licensing
  12  ** information.\endverbatim
  13  **
  14  ** \brief Interactive shell for CVC4
  15  **/
  16
  17 #ifndef __CVC4__INTERACTIVE_SHELL_H
  18 #define __CVC4__INTERACTIVE_SHELL_H
  19
  20 #include <iostream>
  21 #include <string>
  22
  23 #include "util/language.h"
  24 #include "options/options.h"
  25
  26 namespace CVC4 {
  27
  28 class Command;
  29 class ExprManager;
  30 class Options;
  31
  32 namespace parser {
  33   class Parser;
  34 }/* CVC4::parser namespace */
  35
  36 class CVC4_PUBLIC InteractiveShell {
  37   std::istream& d_in;
  38   std::ostream& d_out;
  39   parser::Parser* d_parser;
  40   const Options& d_options;
  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, const Options& options);
  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() {
  67     return d_parser;
  68   }
  69
  70 };/* class InteractiveShell */
  71
  72 }/* CVC4 namespace */
  73
  74 #endif /* __CVC4__INTERACTIVE_SHELL_H */