gdb/interps.h

   1 /* Manages interpreters for GDB, the GNU debugger.
   2
   3    Copyright (C) 2000-2014 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 #include "exceptions.h"
  26
  27 struct ui_out;
  28 struct interp;
  29
  30 extern int interp_resume (struct interp *interp);
  31 extern int interp_suspend (struct interp *interp);
  32 extern int interp_prompt_p (struct interp *interp);
  33 extern struct gdb_exception interp_exec (struct interp *interp,
  34                                          const char *command);
  35 extern int interp_quiet_p (struct interp *interp);
  36
  37 typedef void *(interp_init_ftype) (struct interp *self, int top_level);
  38 typedef int (interp_resume_ftype) (void *data);
  39 typedef int (interp_suspend_ftype) (void *data);
  40 typedef int (interp_prompt_p_ftype) (void *data);
  41 typedef struct gdb_exception (interp_exec_ftype) (void *data,
  42                                                   const char *command);
  43 typedef void (interp_command_loop_ftype) (void *data);
  44 typedef struct ui_out *(interp_ui_out_ftype) (struct interp *self);
  45
  46 typedef int (interp_set_logging_ftype) (struct interp *self, int start_log,
  47                                         struct ui_file *out,
  48                                         struct ui_file *logfile);
  49
  50 struct interp_procs
  51 {
  52   interp_init_ftype *init_proc;
  53   interp_resume_ftype *resume_proc;
  54   interp_suspend_ftype *suspend_proc;
  55   interp_exec_ftype *exec_proc;
  56   interp_prompt_p_ftype *prompt_proc_p;
  57
  58   /* Returns the ui_out currently used to collect results for this
  59      interpreter.  It can be a formatter for stdout, as is the case
  60      for the console & mi outputs, or it might be a result
  61      formatter.  */
  62   interp_ui_out_ftype *ui_out_proc;
  63
  64   /* Provides a hook for interpreters to do any additional
  65      setup/cleanup that they might need when logging is enabled or
  66      disabled.  */
  67   interp_set_logging_ftype *set_logging_proc;
  68
  69   interp_command_loop_ftype *command_loop_proc;
  70 };
  71
  72 extern struct interp *interp_new (const char *name, const struct interp_procs *procs);
  73 extern void interp_add (struct interp *interp);
  74 extern int interp_set (struct interp *interp, int top_level);
  75 extern struct interp *interp_lookup (const char *name);
  76 extern struct ui_out *interp_ui_out (struct interp *interp);
  77 extern void *interp_data (struct interp *interp);
  78 extern const char *interp_name (struct interp *interp);
  79 extern struct interp *interp_set_temp (const char *name);
  80
  81 extern int current_interp_named_p (const char *name);
  82 extern int current_interp_display_prompt_p (void);
  83 extern void current_interp_command_loop (void);
  84
  85 /* Call this function to give the current interpreter an opportunity
  86    to do any special handling of streams when logging is enabled or
  87    disabled.  START_LOG is 1 when logging is starting, 0 when it ends,
  88    and OUT is the stream for the log file; it will be NULL when
  89    logging is ending.  LOGFILE is non-NULL if the output streams
  90    are to be tees, with the log file as one of the outputs.  */
  91
  92 extern int current_interp_set_logging (int start_log, struct ui_file *out,
  93                                        struct ui_file *logfile);
  94
  95 /* Returns opaque data associated with the top-level interpreter.  */
  96 extern void *top_level_interpreter_data (void);
  97 extern struct interp *top_level_interpreter (void);
  98
  99 extern struct interp *command_interp (void);
 100
 101 /* True if the current interpreter is in async mode, false if in sync
 102    mode.  If in sync mode, running a synchronous execution command
 103    (with execute_command, e.g, "next") will not return until the
 104    command is finished.  If in async mode, then running a synchronous
 105    command returns right after resuming the target.  Waiting for the
 106    command's completion is later done on the top event loop (using
 107    continuations).  */
 108 extern int interpreter_async;
 109
 110 extern void clear_interpreter_hooks (void);
 111
 112 /* well-known interpreters */
 113 #define INTERP_CONSOLE          "console"
 114 #define INTERP_MI1             "mi1"
 115 #define INTERP_MI2             "mi2"
 116 #define INTERP_MI3             "mi3"
 117 #define INTERP_MI               "mi"
 118 #define INTERP_TUI              "tui"
 119 #define INTERP_INSIGHT          "insight"
 120
 121 #endif