lily/input-scheme.cc

   1 /*
   2   input-scheme.cc -- implement Input bindings.
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "std-string.hh"
  10 #include "input.hh"
  11
  12 /* We don't use IMPLEMENT_TYPE_P, since the smobification part is
  13    implemented separately from the class.  */
  14 LY_DEFINE (ly_input_location_p, "ly:input-location?", 1, 0, 0,
  15            (SCM x),
  16            "Is @var{x} an @code{input-location}?")
  17 {
  18   return unsmob_input (x) ? SCM_BOOL_T : SCM_BOOL_F;
  19 }
  20
  21 LY_DEFINE (ly_input_message, "ly:input-message", 2, 0, 1, (SCM sip, SCM msg, SCM rest),
  22            "Print @var{msg} as a GNU compliant error message, pointing"
  23            " to the location in @var{sip}.  @var{msg} is interpreted"
  24            " similar to @code{format}'s argument, using @var{rest}.")
  25 {
  26   Input *ip = unsmob_input (sip);
  27
  28   LY_ASSERT_TYPE (unsmob_input, sip, 1);
  29   LY_ASSERT_TYPE (scm_is_string, msg,2);
  30
  31   msg = scm_simple_format (SCM_BOOL_F, msg, rest);
  32
  33   string m = ly_scm2string (msg);
  34   ip->message (m);
  35
  36   return SCM_UNSPECIFIED;
  37 }
  38
  39
  40 LY_DEFINE (ly_input_file_line_char_column,
  41            "ly:input-file-line-char-column",
  42            1, 0, 0, (SCM sip),
  43            "Return input location in @var{sip} as"
  44            " @code{(file-name line char column)}.")
  45 {
  46   LY_ASSERT_TYPE (unsmob_input, sip, 1);
  47   Input *ip = unsmob_input (sip);
  48
  49   int l, ch, col, offset = 0;
  50   ip->get_counts (&l, &ch, &col, &offset);
  51   return scm_list_4 (ly_string2scm (ip->file_string ()),
  52                      scm_from_int (l),
  53                      scm_from_int (ch),
  54                      scm_from_int (col));
  55 }
  56
  57 LY_DEFINE (ly_input_both_locations,
  58            "ly:input-both-locations",
  59            1, 0, 0, (SCM sip),
  60            "Return input location in @var{sip} as"
  61            " @code{(file-name first-line first-column last-line last-column)}.")
  62 {
  63
  64   LY_ASSERT_TYPE (unsmob_input, sip, 1);
  65   Input *ip = unsmob_input (sip);
  66
  67   return scm_list_5 (ly_string2scm (ip->file_string ()),
  68                      scm_from_int (ip->line_number ()),
  69                      scm_from_int (ip->column_number ()),
  70                      scm_from_int (ip->end_line_number ()),
  71                      scm_from_int (ip->end_column_number ()));
  72 }