2 lily-guile.cc -- implement assorted SCM interface functions
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
7 Han-Wen Nienhuys <hanwen@xs4all.nl>
10 #include "lily-guile.hh"
14 #include <cstring> /* strdup, strchr */
19 #include "dimensions.hh"
20 #include "direction.hh"
21 #include "file-path.hh"
22 #include "international.hh"
23 #include "libc-extension.hh"
28 #include "string-convert.hh"
29 #include "source-file.hh"
38 ly_to_symbol (SCM scm)
40 return scm_string_to_symbol (ly_to_string (scm));
44 ly_to_string (SCM scm)
46 return scm_call_3 (ly_lily_module_constant ("format"), SCM_BOOL_F,
48 scm_makfrom0str ("~S"), scm);
54 SCM port = scm_mkstrport (SCM_INUM0,
55 scm_make_string (SCM_INUM0, SCM_UNDEFINED),
58 // SCM write = scm_eval_3 (ly_symbol2scm ("write"), s, SCM_EOL);
59 SCM write = scm_primitive_eval (ly_symbol2scm ("write"));
61 // scm_apply (write, port, SCM_EOL);
62 scm_call_2 (write, s, port);
63 return scm_strport_to_string (port);
69 return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
73 ly_symbol2string (SCM s)
76 Ugh. this is not very efficient.
78 SCM str = scm_symbol_to_string (s);
79 return ly_scm2string (str);
83 gulp_file_to_string (string fn, bool must_exist, int size)
85 string s = global_path.find (fn);
90 string e = _f ("can't find file: `%s'", fn);
92 e += _f ("(load path: `%s')", global_path.to_string ());
99 if (be_verbose_global)
100 progress_indication ("[" + s);
102 vector<char> chars = gulp_file (s, size);
103 string result (&chars[0], chars.size ());
105 if (be_verbose_global)
106 progress_indication ("]");
112 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
114 ly_display_scm (SCM s)
116 scm_display (s, scm_current_output_port ());
117 scm_newline (scm_current_output_port ());
125 ly_scm2string (SCM str)
127 assert (scm_is_string (str));
128 return string (scm_i_string_chars (str),
129 (int) scm_i_string_length (str));
133 ly_scm2newstr (SCM str, size_t *lenp)
135 SCM_ASSERT_TYPE (scm_is_string (str), str, SCM_ARG1, __FUNCTION__, "string");
137 size_t len = scm_i_string_length (str);
138 if (char *new_str = (char *) malloc ((len + 1) * sizeof (char)))
140 memcpy (new_str, scm_i_string_chars (str), len);
156 index_get_cell (SCM s, Direction d)
160 return (d == LEFT) ? scm_car (s) : scm_cdr (s);
164 index_set_cell (SCM s, Direction d, SCM v)
167 scm_set_car_x (s, v);
169 scm_set_cdr_x (s, v);
174 is_number_pair (SCM p)
176 return scm_is_pair (p)
177 && scm_is_number (scm_car (p)) && scm_is_number (scm_cdr (p));
184 return scm_ihashv (s, ~1u);
191 if (scm_is_number (s))
193 int i = scm_to_int (s);
194 return i == 0 || i == 1;
202 return scm_is_bool (s) && ly_scm2bool (s);
211 return scm_is_integer (s) ? (Direction) scm_to_int (s) : CENTER;
215 robust_scm2dir (SCM d, Direction def)
217 if (is_direction (d))
225 if (scm_is_number (s))
227 int i = scm_to_int (s);
228 return i >= -1 && i <= 1;
237 ly_scm2interval (SCM p)
239 return Interval (scm_to_double (scm_car (p)), scm_to_double (scm_cdr (p)));
243 ly_scm2realdrul (SCM p)
245 return Drul_array<Real> (scm_to_double (scm_car (p)),
246 scm_to_double (scm_cdr (p)));
250 ly_interval2scm (Drul_array<Real> i)
252 return scm_cons (scm_from_double (i[LEFT]), scm_from_double (i[RIGHT]));
257 robust_scm2interval (SCM k, Drul_array<Real> v)
262 if (is_number_pair (k))
263 i = ly_scm2interval (k);
268 robust_scm2drul (SCM k, Drul_array<Real> v)
270 if (is_number_pair (k))
271 v = ly_scm2interval (k);
276 robust_scm2booldrul (SCM k, Drul_array<bool> def)
280 def[LEFT] = to_boolean (scm_car (k));
281 def[RIGHT] = to_boolean (scm_cdr (k));
290 ly_offset2scm (Offset o)
292 return scm_cons (scm_from_double (o[X_AXIS]), scm_from_double (o[Y_AXIS]));
296 ly_scm2offset (SCM s)
298 return Offset (scm_to_double (scm_car (s)),
299 scm_to_double (scm_cdr (s)));
303 robust_scm2offset (SCM k, Offset o)
305 if (is_number_pair (k))
306 o = ly_scm2offset (k);
310 ly_offsets2scm (vector<Offset> os)
314 for (vsize i = 0; i < os.size (); i++)
316 *tail = scm_cons (ly_offset2scm (os[i]), SCM_EOL);
317 tail = SCM_CDRLOC(*tail);
323 ly_scm2offsets (SCM s)
326 for (; scm_is_pair (s); s = scm_cdr (s))
327 os.push_back (ly_scm2offset (scm_car (s)));
338 /* looks the key up in the cdrs of the alist-keys
339 - ignoring the car and ignoring non-pair keys.
340 Returns first match found, i.e.
348 I would like (ly_assoc_cdr 1) to return 12 - because it's the first
349 element with the cdr of the key = 1. In other words (alloc_cdr key)
352 (alloc (anything . key))
355 ly_assoc_cdr (SCM key, SCM alist)
357 if (scm_is_pair (alist))
359 SCM trykey = scm_caar (alist);
360 if (scm_is_pair (trykey)
361 && to_boolean (scm_equal_p (key, scm_cdr (trykey))))
362 return scm_car (alist);
363 return ly_assoc_cdr (key, scm_cdr (alist));
370 alist_equal_p (SCM a, SCM b)
373 scm_is_pair (s); s = scm_cdr (s))
375 SCM key = scm_caar (s);
376 SCM val = scm_cdar (s);
377 SCM l = scm_assoc (key, b);
380 || !ly_is_equal (scm_cdr (l), val))
388 ly_alist_vals (SCM alist)
391 for (SCM p = alist; scm_is_pair (p); p = scm_cdr (p))
392 x = scm_cons (scm_cdar (p), x);
400 /* Return I-th element, or last elt L. If I < 0, then we take the first
403 PRE: length (L) > 0 */
405 robust_list_ref (int i, SCM l)
407 while (i-- > 0 && scm_is_pair (scm_cdr (l)))
414 ly_deep_copy (SCM src)
416 if (scm_is_pair (src))
417 return scm_cons (ly_deep_copy (scm_car (src)), ly_deep_copy (scm_cdr (src)));
418 else if (scm_is_vector (src))
420 int len = scm_c_vector_length (src);
421 SCM nv = scm_c_make_vector (len, SCM_UNDEFINED);
422 for (int i = 0;i < len; i++)
424 SCM si = scm_from_int (i);
425 scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si)));
433 ly_truncate_list (int k, SCM lst)
441 for (; scm_is_pair (s) && k--; s = scm_cdr (s))
445 scm_set_cdr_x (s, SCM_EOL);
453 /* Appendable list L: the cdr contains the list, the car the last cons
458 SCM s = scm_cons (SCM_EOL, SCM_EOL);
459 scm_set_car_x (s, s);
465 appendable_list_append (SCM l, SCM elt)
467 SCM newcons = scm_cons (elt, SCM_EOL);
469 scm_set_cdr_x (scm_car (l), newcons);
470 scm_set_car_x (l, newcons);
475 print_scm_val (SCM val)
477 string realval = ly_scm2string (ly_write2scm (val));
478 if (realval.length () > 200)
479 realval = realval.substr (0, 100)
481 + realval.substr (realval.length () - 100);
486 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
494 TODO: should remove #f from allowed vals?
496 if (val == SCM_EOL || val == SCM_BOOL_F)
499 if (!scm_is_symbol (sym))
504 This is used for autoBeamSettings.
506 TODO: deprecate the use of \override and \revert for
509 or use a symbol autoBeamSettingS?
514 SCM type = scm_object_property (sym, type_symbol);
516 if (type != SCM_EOL && !ly_is_procedure (type))
518 warning (_f ("can't find property type-check for `%s' (%s).",
519 ly_symbol2string (sym).c_str (),
520 ly_symbol2string (type_symbol).c_str ())
521 + " " + _ ("perhaps a typing error?"));
523 /* Be strict when being anal :) */
524 if (do_internal_type_checking_global)
527 warning (_ ("doing assignment anyway"));
532 && ly_is_procedure (type)
533 && scm_call_1 (type, val) == SCM_BOOL_F)
536 SCM typefunc = ly_lily_module_constant ("type-name");
537 SCM type_name = scm_call_1 (typefunc, type);
539 warning (_f ("type check for `%s' failed; value `%s' must be of type `%s'",
540 ly_symbol2string (sym).c_str (),
542 ly_scm2string (type_name).c_str ()));
543 progress_indication ("\n");
551 zijn deze nou handig?
552 zijn ze er al in scheme, maar heten ze anders? */
554 /* Remove doubles from (sorted) list */
558 SCM unique = SCM_EOL;
559 for (SCM i = list; scm_is_pair (i); i = scm_cdr (i))
561 if (!scm_is_pair (scm_cdr (i))
562 || !ly_is_equal (scm_car (i), scm_cadr (i)))
563 unique = scm_cons (scm_car (i), unique);
565 return scm_reverse_x (unique, SCM_EOL);
570 scm_default_compare (void const *a, void const *b)
576 return pa < pb ? -1 : 1;
579 /* Modify LST in place: qsort it.
581 FIXME: unused, junk? */
583 ly_list_qsort_uniq_x (SCM lst)
585 int len = scm_ilength (lst);
586 SCM *arr = new SCM[len];
588 for (SCM s = lst; SCM_NNULLP (s); s = scm_cdr (s))
589 arr[k++] = scm_car (s);
592 qsort (arr, len, sizeof (SCM), &scm_default_compare);
595 for (int i = 0; i < len; i++)
596 if (!i || arr[i] != arr[i - 1])
598 SCM_SETCAR (*tail, arr[i]);
599 tail = SCM_CDRLOC (*tail);
608 /* Split list at member s, removing s.
609 Return (BEFORE . AFTER) */
611 ly_split_list (SCM s, SCM list)
613 SCM before = SCM_EOL;
615 for (; scm_is_pair (after);)
617 SCM i = scm_car (after);
618 after = scm_cdr (after);
619 if (ly_is_equal (i, s))
621 before = scm_cons (i, before);
623 return scm_cons (scm_reverse_x (before, SCM_EOL), after);
635 display stuff without using stack
640 SCM p = scm_current_output_port ();
643 for (; scm_is_pair (s); s = scm_cdr (s))
645 scm_display (scm_car (s), p);
649 return SCM_UNSPECIFIED;
653 int_list_to_slice (SCM l)
657 for (; scm_is_pair (l); l = scm_cdr (l))
658 if (scm_is_number (scm_car (l)))
659 s.add_point (scm_to_int (scm_car (l)));
664 robust_scm2double (SCM k, double x)
666 if (scm_is_number (k))
667 x = scm_to_double (k);
673 robust_scm2string (SCM k, string s)
675 if (scm_is_string (k))
676 s = ly_scm2string (k);
681 robust_scm2int (SCM k, int o)
683 if (scm_integer_p (k) == SCM_BOOL_T)
690 ly_rational2scm (Rational r)
692 return scm_divide (scm_from_int (r.numerator ()), scm_from_int (r.denominator ()));
697 ly_scm2rational (SCM r)
699 return Rational (scm_to_int (scm_numerator (r)),
700 scm_to_int (scm_denominator (r)));
705 alist_to_hashq (SCM alist)
707 int i = scm_ilength (alist);
709 return scm_c_make_hash_table (0);
711 SCM tab = scm_c_make_hash_table (i);
712 for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
714 SCM pt = scm_cdar (s);
715 scm_hashq_set_x (tab, scm_caar (s), pt);
721 ly_hash2alist (SCM tab)
723 SCM func = ly_lily_module_constant ("hash-table->alist");
724 return scm_call_1 (func, tab);
728 procedure_arity (SCM proc)
730 assert (ly_is_procedure (proc));
731 SCM arity = scm_procedure_property (proc,
732 ly_symbol2scm ("arity"));
734 SCM fixed = scm_car (arity);
735 return scm_to_int (fixed);
743 mangle_cxx_identifier (string cxx_id)
745 if (cxx_id.substr (0, 3) == "ly_")
746 cxx_id = cxx_id.replace (0, 3, "ly:");
749 cxx_id = String_convert::to_lower (cxx_id);
750 cxx_id = "ly:" + cxx_id;
752 if (cxx_id.substr (cxx_id.length () - 2) == "_p")
753 cxx_id = cxx_id.replace (cxx_id.length () - 2, 1, "?");
754 else if (cxx_id.substr (cxx_id.length () - 2) == "_x")
755 cxx_id = cxx_id.replace (cxx_id.length () - 2, 1, "!");
757 cxx_id = replace_all (cxx_id, '_', '-');
764 ly_string_array_to_scm (vector<string> a)
767 for (vsize i = a.size (); i ; i--)
768 s = scm_cons (ly_symbol2scm (a[i - 1].c_str ()), s);
772 /* SYMBOLS is a whitespace separated list. */
774 parse_symbol_list (char const *symbols)
776 while (isspace (*symbols))
779 replace_all (s, '\n', ' ');
780 replace_all (s, '\t', ' ');
781 return ly_string_array_to_scm (string_split (s, ' '));
786 ly_is_fraction (SCM x)
788 return SCM_FRACTIONP(x);
791 struct ly_t_double_cell