gdb/mi/mi-out.c

   1 /* MI Command Set - output generating routines.
   2
   3    Copyright (C) 2000-2019 Free Software Foundation, Inc.
   4
   5    Contributed by Cygnus Solutions (a Red Hat company).
   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 #include "defs.h"
  23 #include "mi-out.h"
  24
  25 #include <vector>
  26
  27 #include "interps.h"
  28 #include "ui-out.h"
  29 #include "utils.h"
  30
  31 /* Mark beginning of a table.  */
  32
  33 void
  34 mi_ui_out::do_table_begin (int nr_cols, int nr_rows,
  35                            const char *tblid)
  36 {
  37   open (tblid, ui_out_type_tuple);
  38   do_field_signed (-1, -1, ui_left, "nr_rows", nr_rows);
  39   do_field_signed (-1, -1, ui_left, "nr_cols", nr_cols);
  40   open ("hdr", ui_out_type_list);
  41 }
  42
  43 /* Mark beginning of a table body.  */
  44
  45 void
  46 mi_ui_out::do_table_body ()
  47 {
  48   /* close the table header line if there were any headers */
  49   close (ui_out_type_list);
  50   open ("body", ui_out_type_list);
  51 }
  52
  53 /* Mark end of a table.  */
  54
  55 void
  56 mi_ui_out::do_table_end ()
  57 {
  58   close (ui_out_type_list); /* body */
  59   close (ui_out_type_tuple);
  60 }
  61
  62 /* Specify table header.  */
  63
  64 void
  65 mi_ui_out::do_table_header (int width, ui_align alignment,
  66                             const std::string &col_name,
  67                             const std::string &col_hdr)
  68 {
  69   open (NULL, ui_out_type_tuple);
  70   do_field_signed (0, 0, ui_center, "width", width);
  71   do_field_signed (0, 0, ui_center, "alignment", alignment);
  72   do_field_string (0, 0, ui_center, "col_name", col_name.c_str (),
  73                    ui_out_style_kind::DEFAULT);
  74   do_field_string (0, width, alignment, "colhdr", col_hdr.c_str (),
  75                    ui_out_style_kind::DEFAULT);
  76   close (ui_out_type_tuple);
  77 }
  78
  79 /* Mark beginning of a list.  */
  80
  81 void
  82 mi_ui_out::do_begin (ui_out_type type, const char *id)
  83 {
  84   open (id, type);
  85 }
  86
  87 /* Mark end of a list.  */
  88
  89 void
  90 mi_ui_out::do_end (ui_out_type type)
  91 {
  92   close (type);
  93 }
  94
  95 /* Output an int field.  */
  96
  97 void
  98 mi_ui_out::do_field_signed (int fldno, int width, ui_align alignment,
  99                             const char *fldname, LONGEST value)
 100 {
 101   do_field_string (fldno, width, alignment, fldname, plongest (value),
 102                    ui_out_style_kind::DEFAULT);
 103 }
 104
 105 /* Output an unsigned field.  */
 106
 107 void
 108 mi_ui_out::do_field_unsigned (int fldno, int width, ui_align alignment,
 109                               const char *fldname, ULONGEST value)
 110 {
 111   do_field_string (fldno, width, alignment, fldname, pulongest (value),
 112                    ui_out_style_kind::DEFAULT);
 113 }
 114
 115 /* Used to omit a field.  */
 116
 117 void
 118 mi_ui_out::do_field_skip (int fldno, int width, ui_align alignment,
 119                           const char *fldname)
 120 {
 121 }
 122
 123 /* Other specific mi_field_* end up here so alignment and field
 124    separators are both handled by mi_field_string. */
 125
 126 void
 127 mi_ui_out::do_field_string (int fldno, int width, ui_align align,
 128                             const char *fldname, const char *string,
 129                             ui_out_style_kind style)
 130 {
 131   ui_file *stream = m_streams.back ();
 132   field_separator ();
 133
 134   if (fldname)
 135     fprintf_unfiltered (stream, "%s=", fldname);
 136   fprintf_unfiltered (stream, "\"");
 137   if (string)
 138     fputstr_unfiltered (string, '"', stream);
 139   fprintf_unfiltered (stream, "\"");
 140 }
 141
 142 void
 143 mi_ui_out::do_field_fmt (int fldno, int width, ui_align align,
 144                          const char *fldname, const char *format,
 145                          va_list args)
 146 {
 147   ui_file *stream = m_streams.back ();
 148   field_separator ();
 149
 150   if (fldname)
 151     fprintf_unfiltered (stream, "%s=\"", fldname);
 152   else
 153     fputs_unfiltered ("\"", stream);
 154   vfprintf_unfiltered (stream, format, args);
 155   fputs_unfiltered ("\"", stream);
 156 }
 157
 158 void
 159 mi_ui_out::do_spaces (int numspaces)
 160 {
 161 }
 162
 163 void
 164 mi_ui_out::do_text (const char *string)
 165 {
 166 }
 167
 168 void
 169 mi_ui_out::do_message (const char *format, va_list args)
 170 {
 171 }
 172
 173 void
 174 mi_ui_out::do_wrap_hint (const char *identstring)
 175 {
 176   wrap_here (identstring);
 177 }
 178
 179 void
 180 mi_ui_out::do_flush ()
 181 {
 182
 183   gdb_flush (m_streams.back ());
 184 }
 185
 186 void
 187 mi_ui_out::do_redirect (ui_file *outstream)
 188 {
 189   if (outstream != NULL)
 190     m_streams.push_back (outstream);
 191   else
 192     m_streams.pop_back ();
 193 }
 194
 195 void
 196 mi_ui_out::field_separator ()
 197 {
 198   if (m_suppress_field_separator)
 199     m_suppress_field_separator = false;
 200   else
 201     fputc_unfiltered (',', m_streams.back ());
 202 }
 203
 204 void
 205 mi_ui_out::open (const char *name, ui_out_type type)
 206 {
 207   ui_file *stream = m_streams.back ();
 208
 209   field_separator ();
 210   m_suppress_field_separator = true;
 211
 212   if (name)
 213     fprintf_unfiltered (stream, "%s=", name);
 214
 215   switch (type)
 216     {
 217     case ui_out_type_tuple:
 218       fputc_unfiltered ('{', stream);
 219       break;
 220
 221     case ui_out_type_list:
 222       fputc_unfiltered ('[', stream);
 223       break;
 224
 225     default:
 226       internal_error (__FILE__, __LINE__, _("bad switch"));
 227     }
 228 }
 229
 230 void
 231 mi_ui_out::close (ui_out_type type)
 232 {
 233   ui_file *stream = m_streams.back ();
 234
 235   switch (type)
 236     {
 237     case ui_out_type_tuple:
 238       fputc_unfiltered ('}', stream);
 239       break;
 240
 241     case ui_out_type_list:
 242       fputc_unfiltered (']', stream);
 243       break;
 244
 245     default:
 246       internal_error (__FILE__, __LINE__, _("bad switch"));
 247     }
 248
 249   m_suppress_field_separator = false;
 250 }
 251
 252 string_file *
 253 mi_ui_out::main_stream ()
 254 {
 255   gdb_assert (m_streams.size () == 1);
 256
 257   return (string_file *) m_streams.back ();
 258 }
 259
 260 /* Clear the buffer.  */
 261
 262 void
 263 mi_ui_out::rewind ()
 264 {
 265   main_stream ()->clear ();
 266 }
 267
 268 /* Dump the buffer onto the specified stream.  */
 269
 270 void
 271 mi_ui_out::put (ui_file *where)
 272 {
 273   string_file *mi_stream = main_stream ();
 274
 275   where->write (mi_stream->data (), mi_stream->size ());
 276   mi_stream->clear ();
 277 }
 278
 279 /* Return the current MI version.  */
 280
 281 int
 282 mi_ui_out::version ()
 283 {
 284   return m_mi_version;
 285 }
 286
 287 /* Constructor for an `mi_out_data' object.  */
 288
 289 mi_ui_out::mi_ui_out (int mi_version)
 290 : ui_out (mi_version >= 3
 291           ? fix_multi_location_breakpoint_output : (ui_out_flag) 0),
 292   m_suppress_field_separator (false),
 293   m_suppress_output (false),
 294   m_mi_version (mi_version)
 295 {
 296   string_file *stream = new string_file ();
 297   m_streams.push_back (stream);
 298 }
 299
 300 mi_ui_out::~mi_ui_out ()
 301 {
 302 }
 303
 304 /* See mi/mi-out.h.  */
 305
 306 mi_ui_out *
 307 mi_out_new (const char *mi_version)
 308 {
 309   if (streq (mi_version, INTERP_MI3) ||  streq (mi_version, INTERP_MI))
 310     return new mi_ui_out (3);
 311
 312   if (streq (mi_version, INTERP_MI2))
 313     return new mi_ui_out (2);
 314
 315   if (streq (mi_version, INTERP_MI1))
 316     return new mi_ui_out (1);
 317
 318   return nullptr;
 319 }
 320
 321 /* Helper function to return the given UIOUT as an mi_ui_out.  It is an error
 322    to call this function with an ui_out that is not an MI.  */
 323
 324 static mi_ui_out *
 325 as_mi_ui_out (ui_out *uiout)
 326 {
 327   mi_ui_out *mi_uiout = dynamic_cast<mi_ui_out *> (uiout);
 328
 329   gdb_assert (mi_uiout != NULL);
 330
 331   return mi_uiout;
 332 }
 333
 334 int
 335 mi_version (ui_out *uiout)
 336 {
 337   return as_mi_ui_out (uiout)->version ();
 338 }
 339
 340 void
 341 mi_out_put (ui_out *uiout, struct ui_file *stream)
 342 {
 343   return as_mi_ui_out (uiout)->put (stream);
 344 }
 345
 346 void
 347 mi_out_rewind (ui_out *uiout)
 348 {
 349   return as_mi_ui_out (uiout)->rewind ();
 350 }