lily/input-scheme.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2005--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "std-string.hh"
  21 #include "input.hh"
  22
  23 /* We don't use IMPLEMENT_TYPE_P, since the smobification part is
  24    implemented separately from the class.  */
  25 LY_DEFINE (ly_input_location_p, "ly:input-location?", 1, 0, 0,
  26            (SCM x),
  27            "Is @var{x} an @code{input-location}?")
  28 {
  29   return unsmob_input (x) ? SCM_BOOL_T : SCM_BOOL_F;
  30 }
  31
  32 LY_DEFINE (ly_input_message, "ly:input-message", 2, 0, 1, (SCM sip, SCM msg, SCM rest),
  33            "Print @var{msg} as a GNU compliant error message, pointing"
  34            " to the location in @var{sip}.  @var{msg} is interpreted"
  35            " similar to @code{format}'s argument, using @var{rest}.")
  36 {
  37   Input *ip = unsmob_input (sip);
  38
  39   LY_ASSERT_TYPE (unsmob_input, sip, 1);
  40   LY_ASSERT_TYPE (scm_is_string, msg,2);
  41
  42   msg = scm_simple_format (SCM_BOOL_F, msg, rest);
  43
  44   string m = ly_scm2string (msg);
  45   ip->message (m);
  46
  47   return SCM_UNSPECIFIED;
  48 }
  49
  50
  51 LY_DEFINE (ly_input_file_line_char_column,
  52            "ly:input-file-line-char-column",
  53            1, 0, 0, (SCM sip),
  54            "Return input location in @var{sip} as"
  55            " @code{(file-name line char column)}.")
  56 {
  57   LY_ASSERT_TYPE (unsmob_input, sip, 1);
  58   Input *ip = unsmob_input (sip);
  59
  60   int l, ch, col, offset = 0;
  61   ip->get_counts (&l, &ch, &col, &offset);
  62   return scm_list_4 (ly_string2scm (ip->file_string ()),
  63                      scm_from_int (l),
  64                      scm_from_int (ch),
  65                      scm_from_int (col));
  66 }
  67
  68 LY_DEFINE (ly_input_both_locations,
  69            "ly:input-both-locations",
  70            1, 0, 0, (SCM sip),
  71            "Return input location in @var{sip} as"
  72            " @code{(file-name first-line first-column last-line last-column)}.")
  73 {
  74
  75   LY_ASSERT_TYPE (unsmob_input, sip, 1);
  76   Input *ip = unsmob_input (sip);
  77
  78   return scm_list_5 (ly_string2scm (ip->file_string ()),
  79                      scm_from_int (ip->line_number ()),
  80                      scm_from_int (ip->column_number ()),
  81                      scm_from_int (ip->end_line_number ()),
  82                      scm_from_int (ip->end_column_number ()));
  83 }