gdb/ui-out.h

   1 /* Output generating routines for GDB.
   2
   3    Copyright (C) 1999-2016 Free Software Foundation, Inc.
   4
   5    Contributed by Cygnus Solutions.
   6    Written by Fernando Nasser for Cygnus.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  22
  23 #ifndef UI_OUT_H
  24 #define UI_OUT_H 1
  25
  26 /* The ui_out structure */
  27
  28 struct ui_out;
  29 struct ui_file;
  30
  31 /* the current ui_out */
  32
  33 /* FIXME: This should not be a global but something passed down from main.c
  34    or top.c.  */
  35 extern struct ui_out *current_uiout;
  36
  37 /* alignment enum */
  38 enum ui_align
  39   {
  40     ui_left = -1,
  41     ui_center,
  42     ui_right,
  43     ui_noalign
  44   };
  45
  46 /* flags enum */
  47 enum ui_flags
  48   {
  49     ui_from_tty = 1,
  50     ui_source_list = 2
  51   };
  52
  53
  54 /* Prototypes for ui-out API.  */
  55
  56 /* A result is a recursive data structure consisting of lists and
  57    tuples.  */
  58
  59 enum ui_out_type
  60   {
  61     ui_out_type_tuple,
  62     ui_out_type_list
  63   };
  64
  65 extern void ui_out_begin (struct ui_out *uiout,
  66                           enum ui_out_type level_type,
  67                           const char *id);
  68
  69 extern void ui_out_end (struct ui_out *uiout, enum ui_out_type type);
  70
  71 extern struct cleanup *ui_out_begin_cleanup_end (struct ui_out *uiout,
  72                                                  enum ui_out_type level_type,
  73                                                  const char *id);
  74
  75 /* A table can be considered a special tuple/list combination with the
  76    implied structure: ``table = { hdr = { header, ... } , body = [ {
  77    field, ... }, ... ] }''.  If NR_ROWS is negative then there is at
  78    least one row.  */
  79 extern void ui_out_table_header (struct ui_out *uiout, int width,
  80                                  enum ui_align align, const char *col_name,
  81                                  const char *colhdr);
  82
  83 extern void ui_out_table_body (struct ui_out *uiout);
  84
  85 extern struct cleanup *make_cleanup_ui_out_table_begin_end (struct ui_out *ui_out,
  86                                                             int nr_cols,
  87                                                             int nr_rows,
  88                                                             const char *tblid);
  89 /* Compatibility wrappers.  */
  90
  91 extern struct cleanup *make_cleanup_ui_out_list_begin_end (struct ui_out *uiout,
  92                                                            const char *id);
  93
  94 extern struct cleanup *make_cleanup_ui_out_tuple_begin_end (struct ui_out *uiout,
  95                                                             const char *id);
  96
  97 extern void ui_out_field_int (struct ui_out *uiout, const char *fldname,
  98                               int value);
  99
 100 extern void ui_out_field_fmt_int (struct ui_out *uiout, int width,
 101                                   enum ui_align align, const char *fldname,
 102                                   int value);
 103
 104 /* Output a field containing an address.  */
 105
 106 extern void ui_out_field_core_addr (struct ui_out *uiout, const char *fldname,
 107                                     struct gdbarch *gdbarch, CORE_ADDR address);
 108
 109 extern void ui_out_field_string (struct ui_out * uiout, const char *fldname,
 110                                  const char *string);
 111
 112 extern void ui_out_field_stream (struct ui_out *uiout, const char *fldname,
 113                                  struct ui_file *stream);
 114
 115 extern void ui_out_field_fmt (struct ui_out *uiout, const char *fldname,
 116                               const char *format, ...)
 117      ATTRIBUTE_PRINTF (3, 4);
 118
 119 extern void ui_out_field_skip (struct ui_out *uiout, const char *fldname);
 120
 121 extern void ui_out_spaces (struct ui_out *uiout, int numspaces);
 122
 123 extern void ui_out_text (struct ui_out *uiout, const char *string);
 124
 125 extern void ui_out_message (struct ui_out *uiout, int verbosity,
 126                             const char *format, ...)
 127      ATTRIBUTE_PRINTF (3, 4);
 128
 129 extern void ui_out_wrap_hint (struct ui_out *uiout, char *identstring);
 130
 131 extern void ui_out_flush (struct ui_out *uiout);
 132
 133 extern int ui_out_set_flags (struct ui_out *uiout, int mask);
 134
 135 extern int ui_out_clear_flags (struct ui_out *uiout, int mask);
 136
 137 extern int ui_out_get_verblvl (struct ui_out *uiout);
 138
 139 extern int ui_out_test_flags (struct ui_out *uiout, int mask);
 140
 141 extern int ui_out_query_field (struct ui_out *uiout, int colno,
 142                                int *width, int *alignment, char **col_name);
 143
 144 /* HACK: Code in GDB is currently checking to see the type of ui_out
 145    builder when determining which output to produce.  This function is
 146    a hack to encapsulate that test.  Once GDB manages to separate the
 147    CLI/MI from the core of GDB the problem should just go away ....  */
 148
 149 extern int ui_out_is_mi_like_p (struct ui_out *uiout);
 150
 151 /* From here on we have things that are only needed by implementation
 152    routines and main.c.   We should pehaps have a separate file for that,
 153    like a  ui-out-impl.h  file.  */
 154
 155 /* User Interface Output Implementation Function Table */
 156
 157 /* Type definition of all implementation functions.  */
 158
 159 typedef void (table_begin_ftype) (struct ui_out * uiout,
 160                                   int nbrofcols, int nr_rows,
 161                                   const char *tblid);
 162 typedef void (table_body_ftype) (struct ui_out * uiout);
 163 typedef void (table_end_ftype) (struct ui_out * uiout);
 164 typedef void (table_header_ftype) (struct ui_out * uiout, int width,
 165                                    enum ui_align align, const char *col_name,
 166                                    const char *colhdr);
 167 /* Note: level 0 is the top-level so LEVEL is always greater than
 168    zero.  */
 169 typedef void (ui_out_begin_ftype) (struct ui_out *uiout,
 170                                    enum ui_out_type type,
 171                                    int level, const char *id);
 172 typedef void (ui_out_end_ftype) (struct ui_out *uiout,
 173                                  enum ui_out_type type,
 174                                  int level);
 175 typedef void (field_int_ftype) (struct ui_out * uiout, int fldno, int width,
 176                                 enum ui_align align,
 177                                 const char *fldname, int value);
 178 typedef void (field_skip_ftype) (struct ui_out * uiout, int fldno, int width,
 179                                  enum ui_align align,
 180                                  const char *fldname);
 181 typedef void (field_string_ftype) (struct ui_out * uiout, int fldno, int width,
 182                                    enum ui_align align,
 183                                    const char *fldname,
 184                                    const char *string);
 185 typedef void (field_fmt_ftype) (struct ui_out * uiout, int fldno, int width,
 186                                 enum ui_align align,
 187                                 const char *fldname,
 188                                 const char *format,
 189                                 va_list args) ATTRIBUTE_FPTR_PRINTF(6,0);
 190 typedef void (spaces_ftype) (struct ui_out * uiout, int numspaces);
 191 typedef void (text_ftype) (struct ui_out * uiout,
 192                            const char *string);
 193 typedef void (message_ftype) (struct ui_out * uiout, int verbosity,
 194                               const char *format, va_list args)
 195      ATTRIBUTE_FPTR_PRINTF(3,0);
 196 typedef void (wrap_hint_ftype) (struct ui_out * uiout, char *identstring);
 197 typedef void (flush_ftype) (struct ui_out * uiout);
 198 typedef int (redirect_ftype) (struct ui_out * uiout,
 199                               struct ui_file * outstream);
 200 typedef void (data_destroy_ftype) (struct ui_out *uiout);
 201
 202 /* ui-out-impl */
 203
 204 /* IMPORTANT: If you change this structure, make sure to change the default
 205    initialization in ui-out.c.  */
 206
 207 struct ui_out_impl
 208   {
 209     table_begin_ftype *table_begin;
 210     table_body_ftype *table_body;
 211     table_end_ftype *table_end;
 212     table_header_ftype *table_header;
 213     ui_out_begin_ftype *begin;
 214     ui_out_end_ftype *end;
 215     field_int_ftype *field_int;
 216     field_skip_ftype *field_skip;
 217     field_string_ftype *field_string;
 218     field_fmt_ftype *field_fmt;
 219     spaces_ftype *spaces;
 220     text_ftype *text;
 221     message_ftype *message;
 222     wrap_hint_ftype *wrap_hint;
 223     flush_ftype *flush;
 224     redirect_ftype *redirect;
 225     data_destroy_ftype *data_destroy;
 226     int is_mi_like_p;
 227   };
 228
 229 extern void *ui_out_data (struct ui_out *uiout);
 230
 231 extern void uo_field_string (struct ui_out *uiout, int fldno, int width,
 232                              enum ui_align align, const char *fldname,
 233                              const char *string);
 234
 235 /* Create a ui_out object */
 236
 237 extern struct ui_out *ui_out_new (const struct ui_out_impl *impl,
 238                                   void *data,
 239                                   int flags);
 240
 241 /* Destroy a ui_out object.  */
 242
 243 extern void ui_out_destroy (struct ui_out *uiout);
 244
 245 /* Redirect the ouptut of a ui_out object temporarily.  */
 246
 247 extern int ui_out_redirect (struct ui_out *uiout, struct ui_file *outstream);
 248
 249 #endif /* UI_OUT_H */