gdb/mi/mi-out.c

   1 /* MI Command Set - output generating routines.
   2
   3    Copyright (C) 2000-2017 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 "ui-out.h"
  24 #include "mi-out.h"
  25 #include <vector>
  26
  27 /* Mark beginning of a table.  */
  28
  29 void
  30 mi_ui_out::do_table_begin (int nr_cols, int nr_rows,
  31                            const char *tblid)
  32 {
  33   open (tblid, ui_out_type_tuple);
  34   do_field_int (-1, -1, ui_left, "nr_rows", nr_rows);
  35   do_field_int (-1, -1, ui_left, "nr_cols", nr_cols);
  36   open ("hdr", ui_out_type_list);
  37 }
  38
  39 /* Mark beginning of a table body.  */
  40
  41 void
  42 mi_ui_out::do_table_body ()
  43 {
  44   /* close the table header line if there were any headers */
  45   close (ui_out_type_list);
  46   open ("body", ui_out_type_list);
  47 }
  48
  49 /* Mark end of a table.  */
  50
  51 void
  52 mi_ui_out::do_table_end ()
  53 {
  54   close (ui_out_type_list); /* body */
  55   close (ui_out_type_tuple);
  56 }
  57
  58 /* Specify table header.  */
  59
  60 void
  61 mi_ui_out::do_table_header (int width, ui_align alignment,
  62                             const std::string &col_name,
  63                             const std::string &col_hdr)
  64 {
  65   open (NULL, ui_out_type_tuple);
  66   do_field_int (0, 0, ui_center, "width", width);
  67   do_field_int (0, 0, ui_center, "alignment", alignment);
  68   do_field_string (0, 0, ui_center, "col_name", col_name.c_str ());
  69   do_field_string (0, width, alignment, "colhdr", col_hdr.c_str ());
  70   close (ui_out_type_tuple);
  71 }
  72
  73 /* Mark beginning of a list.  */
  74
  75 void
  76 mi_ui_out::do_begin (ui_out_type type, const char *id)
  77 {
  78   open (id, type);
  79 }
  80
  81 /* Mark end of a list.  */
  82
  83 void
  84 mi_ui_out::do_end (ui_out_type type)
  85 {
  86   close (type);
  87 }
  88
  89 /* Output an int field.  */
  90
  91 void
  92 mi_ui_out::do_field_int (int fldno, int width, ui_align alignment,
  93                          const char *fldname, int value)
  94 {
  95   char buffer[20];      /* FIXME: how many chars long a %d can become? */
  96
  97   xsnprintf (buffer, sizeof (buffer), "%d", value);
  98   do_field_string (fldno, width, alignment, fldname, buffer);
  99 }
 100
 101 /* Used to omit a field.  */
 102
 103 void
 104 mi_ui_out::do_field_skip (int fldno, int width, ui_align alignment,
 105                           const char *fldname)
 106 {
 107 }
 108
 109 /* Other specific mi_field_* end up here so alignment and field
 110    separators are both handled by mi_field_string. */
 111
 112 void
 113 mi_ui_out::do_field_string (int fldno, int width, ui_align align,
 114                             const char *fldname, const char *string)
 115 {
 116   ui_file *stream = m_streams.back ();
 117   field_separator ();
 118
 119   if (fldname)
 120     fprintf_unfiltered (stream, "%s=", fldname);
 121   fprintf_unfiltered (stream, "\"");
 122   if (string)
 123     fputstr_unfiltered (string, '"', stream);
 124   fprintf_unfiltered (stream, "\"");
 125 }
 126
 127 /* This is the only field function that does not align.  */
 128
 129 void
 130 mi_ui_out::do_field_fmt (int fldno, int width, ui_align align,
 131                          const char *fldname, const char *format,
 132                          va_list args)
 133 {
 134   ui_file *stream = m_streams.back ();
 135   field_separator ();
 136
 137   if (fldname)
 138     fprintf_unfiltered (stream, "%s=\"", fldname);
 139   else
 140     fputs_unfiltered ("\"", stream);
 141   vfprintf_unfiltered (stream, format, args);
 142   fputs_unfiltered ("\"", stream);
 143 }
 144
 145 void
 146 mi_ui_out::do_spaces (int numspaces)
 147 {
 148 }
 149
 150 void
 151 mi_ui_out::do_text (const char *string)
 152 {
 153 }
 154
 155 void
 156 mi_ui_out::do_message (const char *format, va_list args)
 157 {
 158 }
 159
 160 void
 161 mi_ui_out::do_wrap_hint (const char *identstring)
 162 {
 163   wrap_here (identstring);
 164 }
 165
 166 void
 167 mi_ui_out::do_flush ()
 168 {
 169
 170   gdb_flush (m_streams.back ());
 171 }
 172
 173 void
 174 mi_ui_out::do_redirect (ui_file *outstream)
 175 {
 176   if (outstream != NULL)
 177     m_streams.push_back (outstream);
 178   else
 179     m_streams.pop_back ();
 180 }
 181
 182 void
 183 mi_ui_out::field_separator ()
 184 {
 185   if (m_suppress_field_separator)
 186     m_suppress_field_separator = false;
 187   else
 188     fputc_unfiltered (',', m_streams.back ());
 189 }
 190
 191 void
 192 mi_ui_out::open (const char *name, ui_out_type type)
 193 {
 194   ui_file *stream = m_streams.back ();
 195
 196   field_separator ();
 197   m_suppress_field_separator = true;
 198
 199   if (name)
 200     fprintf_unfiltered (stream, "%s=", name);
 201
 202   switch (type)
 203     {
 204     case ui_out_type_tuple:
 205       fputc_unfiltered ('{', stream);
 206       break;
 207
 208     case ui_out_type_list:
 209       fputc_unfiltered ('[', stream);
 210       break;
 211
 212     default:
 213       internal_error (__FILE__, __LINE__, _("bad switch"));
 214     }
 215 }
 216
 217 void
 218 mi_ui_out::close (ui_out_type type)
 219 {
 220   ui_file *stream = m_streams.back ();
 221
 222   switch (type)
 223     {
 224     case ui_out_type_tuple:
 225       fputc_unfiltered ('}', stream);
 226       break;
 227
 228     case ui_out_type_list:
 229       fputc_unfiltered (']', stream);
 230       break;
 231
 232     default:
 233       internal_error (__FILE__, __LINE__, _("bad switch"));
 234     }
 235
 236   m_suppress_field_separator = false;
 237 }
 238
 239 string_file *
 240 mi_ui_out::main_stream ()
 241 {
 242   gdb_assert (m_streams.size () == 1);
 243
 244   return (string_file *) m_streams.back ();
 245 }
 246
 247 /* Clear the buffer.  */
 248
 249 void
 250 mi_ui_out::rewind ()
 251 {
 252   main_stream ()->clear ();
 253 }
 254
 255 /* Dump the buffer onto the specified stream.  */
 256
 257 void
 258 mi_ui_out::put (ui_file *where)
 259 {
 260   string_file *mi_stream = main_stream ();
 261
 262   where->write (mi_stream->data (), mi_stream->size ());
 263   mi_stream->clear ();
 264 }
 265
 266 /* Return the current MI version.  */
 267
 268 int
 269 mi_ui_out::version ()
 270 {
 271   return m_mi_version;
 272 }
 273
 274 /* Constructor for an `mi_out_data' object.  */
 275
 276 mi_ui_out::mi_ui_out (int mi_version)
 277 : m_suppress_field_separator (false),
 278   m_suppress_output (false),
 279   m_mi_version (mi_version)
 280 {
 281   string_file *stream = new string_file ();
 282   m_streams.push_back (stream);
 283 }
 284
 285 mi_ui_out::~mi_ui_out ()
 286 {
 287 }
 288
 289 /* Initialize private members at startup.  */
 290
 291 mi_ui_out *
 292 mi_out_new (int mi_version)
 293 {
 294   return new mi_ui_out (mi_version);
 295 }
 296
 297 /* Helper function to return the given UIOUT as an mi_ui_out.  It is an error
 298    to call this function with an ui_out that is not an MI.  */
 299
 300 static mi_ui_out *
 301 as_mi_ui_out (ui_out *uiout)
 302 {
 303   mi_ui_out *mi_uiout = dynamic_cast<mi_ui_out *> (uiout);
 304
 305   gdb_assert (mi_uiout != NULL);
 306
 307   return mi_uiout;
 308 }
 309
 310 int
 311 mi_version (ui_out *uiout)
 312 {
 313   return as_mi_ui_out (uiout)->version ();
 314 }
 315
 316 void
 317 mi_out_put (ui_out *uiout, struct ui_file *stream)
 318 {
 319   return as_mi_ui_out (uiout)->put (stream);
 320 }
 321
 322 void
 323 mi_out_rewind (ui_out *uiout)
 324 {
 325   return as_mi_ui_out (uiout)->rewind ();
 326 }