source/commandinterpreter.h

   1 /* $Id$
   2
   3 This file is part of gldbg
   4 Copyright © 2009-2010  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the GPL
   6 */
   7
   8 #ifndef COMMANDINTERPRETER_H_
   9 #define COMMANDINTERPRETER_H_
  10
  11 #include <map>
  12 #include <string>
  13
  14 class GlDbg;
  15
  16 class CommandInterpreter
  17 {
  18 public:
  19         struct Command
  20         {
  21         private:
  22                 std::string description;
  23                 std::string help;
  24
  25         protected:
  26                 Command() { }
  27         public:
  28                 virtual ~Command() { }
  29
  30                 void set_help(const std::string &);
  31                 void set_help(const std::string &, const std::string &);
  32                 const std::string &get_description() const { return description; }
  33                 const std::string &get_help() const { return help; }
  34
  35                 virtual void execute(const std::string &) = 0;
  36         };
  37
  38 private:
  39         template<typename T>
  40         class CommandFunction: public Command
  41         {
  42         private:
  43                 typedef void (T::*Func)(const std::string &);
  44
  45                 T *obj;
  46                 Func func;
  47         public:
  48                 CommandFunction(T *o, Func f): obj(o), func(f) { }
  49
  50                 virtual void execute(const std::string &a)
  51                 { (obj->*func)(a); }
  52         };
  53
  54         class CommandAlias: public Command
  55         {
  56         private:
  57                 Command *target;
  58
  59         public:
  60                 CommandAlias(Command *);
  61
  62                 const Command *get_target() const { return target; }
  63
  64                 virtual void execute(const std::string &);
  65         };
  66
  67         typedef std::map<std::string, Command *> CommandMap;
  68
  69         GlDbg &gldbg;
  70         CommandMap commands;
  71
  72 public:
  73         CommandInterpreter(GlDbg &);
  74
  75         template<typename T>
  76         Command &register_command(const std::string &n, T *o, void (T::*f)(const std::string &))
  77         { return *(commands[n] = new CommandFunction<T>(o, f)); }
  78
  79         void execute(const std::string &);
  80
  81 private:
  82         void cmd_help(const std::string &);
  83         void cmd_run(const std::string &);
  84         void cmd_continue(const std::string &);
  85         void cmd_signal(const std::string &);
  86         void cmd_kill(const std::string &);
  87         void cmd_exit(const std::string &);
  88 };
  89
  90 #endif