gdb/interps.h

   1 /* Manages interpreters for GDB, the GNU debugger.
   2
   3    Copyright (C) 2000-2016 Free Software Foundation, Inc.
   4
   5    Written by Jim Ingham <jingham@apple.com> of Apple Computer, Inc.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef INTERPS_H
  23 #define INTERPS_H
  24
  25 struct ui_out;
  26 struct interp;
  27 struct ui;
  28
  29 typedef struct interp *(*interp_factory_func) (const char *name);
  30
  31 /* Each interpreter kind (CLI, MI, etc.) registers itself with a call
  32    to this function, passing along its name, and a pointer to a
  33    function that creates a new instance of an interpreter with that
  34    name.  */
  35 extern void interp_factory_register (const char *name,
  36                                      interp_factory_func func);
  37
  38 extern int interp_resume (struct interp *interp);
  39 extern int interp_suspend (struct interp *interp);
  40 extern struct gdb_exception interp_exec (struct interp *interp,
  41                                          const char *command);
  42 extern int interp_quiet_p (struct interp *interp);
  43
  44 typedef void *(interp_init_ftype) (struct interp *self, int top_level);
  45 typedef int (interp_resume_ftype) (void *data);
  46 typedef int (interp_suspend_ftype) (void *data);
  47 typedef struct gdb_exception (interp_exec_ftype) (void *data,
  48                                                   const char *command);
  49 typedef void (interp_command_loop_ftype) (void *data);
  50 typedef struct ui_out *(interp_ui_out_ftype) (struct interp *self);
  51
  52 typedef int (interp_set_logging_ftype) (struct interp *self, int start_log,
  53                                         struct ui_file *out,
  54                                         struct ui_file *logfile);
  55
  56 typedef int (interp_supports_command_editing_ftype) (struct interp *self);
  57
  58 struct interp_procs
  59 {
  60   interp_init_ftype *init_proc;
  61   interp_resume_ftype *resume_proc;
  62   interp_suspend_ftype *suspend_proc;
  63   interp_exec_ftype *exec_proc;
  64
  65   /* Returns the ui_out currently used to collect results for this
  66      interpreter.  It can be a formatter for stdout, as is the case
  67      for the console & mi outputs, or it might be a result
  68      formatter.  */
  69   interp_ui_out_ftype *ui_out_proc;
  70
  71   /* Provides a hook for interpreters to do any additional
  72      setup/cleanup that they might need when logging is enabled or
  73      disabled.  */
  74   interp_set_logging_ftype *set_logging_proc;
  75
  76   interp_command_loop_ftype *command_loop_proc;
  77
  78   /* Returns true if this interpreter supports using the readline
  79      library; false if it uses GDB's own simplified readline
  80      emulation.  */
  81   interp_supports_command_editing_ftype *supports_command_editing_proc;
  82 };
  83
  84 extern struct interp *interp_new (const char *name,
  85                                   const struct interp_procs *procs,
  86                                   void *data);
  87 extern void interp_add (struct ui *ui, struct interp *interp);
  88 extern int interp_set (struct interp *interp, int top_level);
  89
  90 /* Look up the interpreter for NAME, creating one if none exists yet.
  91    If NAME is not a interpreter type previously registered with
  92    interp_factory_register, return NULL; otherwise return a pointer to
  93    the interpreter.  */
  94 extern struct interp *interp_lookup (struct ui *ui, const char *name);
  95
  96 extern struct ui_out *interp_ui_out (struct interp *interp);
  97 extern void *interp_data (struct interp *interp);
  98 extern const char *interp_name (struct interp *interp);
  99 extern struct interp *interp_set_temp (const char *name);
 100
 101 extern int current_interp_named_p (const char *name);
 102
 103 extern void current_interp_command_loop (void);
 104
 105 /* Call this function to give the current interpreter an opportunity
 106    to do any special handling of streams when logging is enabled or
 107    disabled.  START_LOG is 1 when logging is starting, 0 when it ends,
 108    and OUT is the stream for the log file; it will be NULL when
 109    logging is ending.  LOGFILE is non-NULL if the output streams
 110    are to be tees, with the log file as one of the outputs.  */
 111
 112 extern int current_interp_set_logging (int start_log, struct ui_file *out,
 113                                        struct ui_file *logfile);
 114
 115 /* Returns opaque data associated with the top-level interpreter.  */
 116 extern void *top_level_interpreter_data (void);
 117 extern struct interp *top_level_interpreter (void);
 118
 119 extern struct interp *command_interp (void);
 120
 121 extern void clear_interpreter_hooks (void);
 122
 123 /* Returns true if INTERP supports using the readline library; false
 124    if it uses GDB's own simplified form of readline.  */
 125 extern int interp_supports_command_editing (struct interp *interp);
 126
 127 /* well-known interpreters */
 128 #define INTERP_CONSOLE          "console"
 129 #define INTERP_MI1             "mi1"
 130 #define INTERP_MI2             "mi2"
 131 #define INTERP_MI3             "mi3"
 132 #define INTERP_MI               "mi"
 133 #define INTERP_TUI              "tui"
 134 #define INTERP_INSIGHT          "insight"
 135
 136 #endif