2 lily-guile.cc -- implement assorted guile functions
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
8 Han-Wen Nienhuys <hanwen@cs.uu.nl>
14 #include <math.h> /* isinf */
15 #include <string.h> /* strdup, strchr */
18 #include "lily-proto.hh"
22 source-file.hh includes cmath which undefines isinf and isnan
24 FIXME: #ifdef MACOS_X?
26 inline int my_isinf (Real r) { return isinf (r); }
27 inline int my_isnan (Real r) { return isnan (r); }
30 #include "libc-extension.hh"
31 #include "lily-guile.hh"
33 #include "file-path.hh"
35 #include "direction.hh"
37 #include "interval.hh"
39 #include "dimensions.hh"
40 #include "source-file.hh"
47 return ly_car (scm_last_pair (list));
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 gh_call2 (write, s, port);
63 return scm_strport_to_string (port);
70 return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
74 ly_symbol2string (SCM s)
76 assert (gh_symbol_p (s));
77 return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s));
81 gulp_file_to_string (String fn)
83 String s = global_path.find (fn);
86 String e = _f ("can't find file: `%s'", fn);
88 e += _f ("(load path: `%s')", global_path.to_string ());
91 else if (verbose_global_b)
92 progress_indication ("[" + s);
95 char * str = gulp_file (s, &n);
100 progress_indication ("]");
105 LY_DEFINE (ly_gulp_file, "ly:gulp-file",
107 "Read the file @var{name}, and return its contents in a string. "
108 "The file is looked up using the search path.")
110 SCM_ASSERT_TYPE (gh_string_p (name), name, SCM_ARG1, __FUNCTION__, "string");
111 return scm_makfrom0str (gulp_file_to_string (ly_scm2string (name)).to_str0 ());
116 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
118 ly_display_scm (SCM s)
126 ly_scm2string (SCM s)
128 assert (gh_string_p (s));
130 char *p = SCM_STRING_CHARS (s);
136 index_get_cell (SCM s, Direction d)
140 return (d == LEFT) ? ly_car (s) : ly_cdr (s);
144 index_set_cell (SCM s, Direction d, SCM v)
153 LY_DEFINE (ly_warning,"ly:warn", 1, 0, 0,
154 (SCM str), "Scheme callable function to issue the warning @code{msg}.")
156 SCM_ASSERT_TYPE (gh_string_p (str), str, SCM_ARG1, __FUNCTION__, "string");
157 progress_indication ("\n");
158 warning ("lily-guile: " + ly_scm2string (str));
162 LY_DEFINE (ly_dir_p, "ly:dir?", 1,0, 0, (SCM s),
163 "type predicate. A direction is @code{-1}, @code{0} or "
164 "@code{1}, where @code{-1} represents "
165 "left or down and @code{1} represents right or up.")
169 int i = gh_scm2int (s);
170 return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
176 is_number_pair (SCM p)
178 return gh_pair_p (p) && gh_number_p (ly_car (p)) && gh_number_p (ly_cdr (p));
181 typedef void (*Void_fptr) ();
182 Array<Void_fptr> *scm_init_funcs_;
184 void add_scm_init_func (void (*f) ())
186 if (!scm_init_funcs_)
187 scm_init_funcs_ = new Array<Void_fptr>;
189 scm_init_funcs_->push (f);
194 ly_init_ly_module (void *)
196 for (int i=scm_init_funcs_->size () ; i--;)
197 (scm_init_funcs_->elem (i)) ();
199 if (verbose_global_b)
200 progress_indication ("\n");
202 scm_primitive_load_path (scm_makfrom0str ("lily.scm"));
206 SCM global_lily_module;
211 global_lily_module = scm_c_define_module ("lily", ly_init_ly_module, 0);
212 scm_c_use_module ("lily");
215 unsigned int ly_scm_hash (SCM s)
217 return scm_ihashv (s, ~1u);
227 int i = gh_scm2int (s);
228 return i>= -1 && i <= 1;
239 int i = gh_scm2int (s);
240 return i== 0 || i == 1;
248 return SCM_INUMP (s) ? (Direction) gh_scm2int (s) : CENTER;
252 ly_scm2interval (SCM p)
254 return Interval (gh_scm2double (ly_car (p)), gh_scm2double (ly_cdr (p)));
258 ly_scm2realdrul (SCM p)
260 return Drul_array<Real> (gh_scm2double (ly_car (p)),
261 gh_scm2double (ly_cdr (p)));
265 ly_interval2scm (Drul_array<Real> i)
267 return gh_cons (gh_double2scm (i[LEFT]), gh_double2scm (i[RIGHT]));
273 return gh_boolean_p (s) && gh_scm2bool (s);
276 /* Appendable list L: the cdr contains the list, the car the last cons
281 SCM s = gh_cons (SCM_EOL, SCM_EOL);
288 appendable_list_append (SCM l, SCM elt)
290 SCM newcons = gh_cons (elt, SCM_EOL);
292 gh_set_cdr_x (ly_car (l), newcons);
293 gh_set_car_x (l, newcons);
298 ly_offset2scm (Offset o)
300 return gh_cons (gh_double2scm (o[X_AXIS]), gh_double2scm (o[Y_AXIS]));
304 ly_scm2offset (SCM s)
306 return Offset (gh_scm2double (ly_car (s)),
307 gh_scm2double (ly_cdr (s)));
311 LY_DEFINE (ly_number2string, "ly:number->string",
313 "Convert @var{num} to a string without generating many decimals.")
315 SCM_ASSERT_TYPE (gh_number_p (s), s, SCM_ARG1, __FUNCTION__, "number");
317 char str[400]; // ugh.
319 if (scm_exact_p (s) == SCM_BOOL_F)
321 Real r (gh_scm2double (s));
323 if (my_isinf (r) || my_isnan (r))
325 programming_error ("Infinity or NaN encountered while converting Real number; setting to zero.");
329 sprintf (str, "%08.4f", r);
332 sprintf (str, "%d", gh_scm2int (s));
334 return scm_makfrom0str (str);
338 Undef this to see if GUILE GC is causing too many swaps.
344 #include <libguile/gc.h>
347 greet_sweep (void *dummy1, void *dummy2, void *dummy3)
349 fprintf (stderr, "entering sweep\n");
353 wave_sweep_goodbye (void *dummy1, void *dummy2, void *dummy3)
355 fprintf (stderr, "leaving sweep\n");
360 LY_DEFINE (ly_version, "ly:version", 0, 0, 0, (),
361 "Return the current lilypond version as a list, e.g. @code{(1 3 127 uu1)}. ")
363 char const* vs = "\'(" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ;
365 return gh_eval_str ((char*)vs);
368 LY_DEFINE (ly_unit, "ly:unit", 0, 0, 0, (),
369 "Return the unit used for lengths as a string.")
371 return scm_makfrom0str (INTERNAL_UNIT);
376 LY_DEFINE (ly_dimension_p, "ly:dimension?", 1, 0, 0, (SCM d),
377 "Return @var{d} is a number. Used to distinguish length "
378 "variables from normal numbers.")
380 return scm_number_p (d);
387 scm_c_hook_add (&scm_before_mark_c_hook, greet_sweep, 0, 0);
388 scm_c_hook_add (&scm_before_sweep_c_hook, wave_sweep_goodbye, 0, 0);
392 ADD_SCM_INIT_FUNC (funcs, init_functions);
395 ly_deep_copy (SCM src)
398 return gh_cons (ly_deep_copy (ly_car (src)), ly_deep_copy (ly_cdr (src)));
399 else if (gh_vector_p (src))
401 int len = SCM_VECTOR_LENGTH (src);
402 SCM nv = scm_c_make_vector (len, SCM_UNDEFINED);
403 for (int i =0 ; i < len ; i++)
405 SCM si = gh_int2scm (i);
406 scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si)));
416 ly_assoc_chain (SCM key, SCM achain)
418 if (gh_pair_p (achain))
420 SCM handle = scm_assoc (key, ly_car (achain));
421 if (gh_pair_p (handle))
424 return ly_assoc_chain (key, ly_cdr (achain));
430 /* looks the key up in the cdrs of the alist-keys
431 - ignoring the car and ignoring non-pair keys.
432 Returns first match found, i.e.
440 I would like (ly_assoc_cdr 1) to return 12 - because it's the first
441 element with the cdr of the key = 1. In other words (alloc_cdr key)
444 (alloc (anything . key))
450 ly_assoc_cdr (SCM key, SCM alist)
452 if (gh_pair_p (alist))
454 SCM trykey = ly_caar (alist);
455 if (gh_pair_p (trykey) && to_boolean (scm_equal_p (key, ly_cdr (trykey))))
456 return ly_car (alist);
458 return ly_assoc_cdr (key, ly_cdr (alist));
463 /* LST has the form "sym1 sym2 sym3\nsym4\nsym5"
464 i.e. \n and ' ' can be used interchangeably as separators. */
466 parse_symbol_list (char const *lst)
468 char *s = strdup (lst);
470 SCM create_list = SCM_EOL;
472 char * e = s + strlen (s) - 1;
473 while (e >= s && isspace (*e))
476 for (char * p = s; *p; p++)
485 char *next = strchr (s, ' ');
489 create_list = gh_cons (ly_symbol2scm (s), create_list);
498 ly_truncate_list (int k, SCM lst)
506 for (; gh_pair_p (s) && k--; s = ly_cdr (s))
510 gh_set_cdr_x (s, SCM_EOL);
516 print_scm_val (SCM val)
518 String realval = ly_scm2string (ly_write2scm (val));
519 if (realval.length () > 200)
520 realval = realval.left_string (100)
522 + realval.right_string (100);
527 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
535 TODO: should remove #f from allowed vals?
537 if (val == SCM_EOL || val == SCM_BOOL_F)
540 if (!gh_symbol_p (sym))
545 This is used for autoBeamSettings.
547 TODO: deprecate the use of \override and \revert for
550 or use a symbol autoBeamSettingS?
555 SCM type = scm_object_property (sym, type_symbol);
557 if (type != SCM_EOL && !gh_procedure_p (type))
559 warning (_f ("Can't find property type-check for `%s' (%s).",
560 ly_symbol2string (sym).to_str0 (),
561 ly_symbol2string (type_symbol).to_str0 ())
562 + " " + _ ("Perhaps you made a typing error?"));
564 /* Be strict when being anal :) */
565 if (internal_type_checking_global_b)
568 warning (_ ("Doing assignment anyway."));
573 && gh_procedure_p (type)
574 && gh_call1 (type, val) == SCM_BOOL_F)
576 SCM errport = scm_current_error_port ();
578 SCM typefunc = ly_scheme_function ("type-name");
579 SCM type_name = gh_call1 (typefunc, type);
582 scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
583 ly_symbol2string (sym).to_str0 (),
585 ly_scm2string (type_name).to_str0 ()).to_str0 (),
587 scm_puts ("\n", errport);
596 zijn deze nou handig?
597 zijn ze er al in scheme, maar heten ze anders? */
600 /* Remove doubles from (sorted) list */
604 SCM unique = SCM_EOL;
605 for (SCM i = list; gh_pair_p (i); i = ly_cdr (i))
607 if (!gh_pair_p (ly_cdr (i))
608 || !gh_equal_p (ly_car (i), ly_cadr (i)))
609 unique = gh_cons (ly_car (i), unique);
611 return scm_reverse_x (unique, SCM_EOL);
616 ly_snoc (SCM s, SCM list)
618 return gh_append2 (list, scm_list_n (s, SCM_UNDEFINED));
621 /* Split list at member s, removing s.
622 Return (BEFORE . AFTER) */
624 ly_split_list (SCM s, SCM list)
626 SCM before = SCM_EOL;
628 for (; gh_pair_p (after);)
630 SCM i = ly_car (after);
631 after = ly_cdr (after);
632 if (gh_equal_p (i, s))
634 before = gh_cons (i, before);
636 return gh_cons ( scm_reverse_x (before, SCM_EOL), after);
650 display stuff without using stack
655 SCM p = scm_current_output_port ();
658 for (; gh_pair_p (s); s =gh_cdr (s))
660 scm_display (gh_car (s), p);
664 return SCM_UNSPECIFIED;
668 int_list_to_slice (SCM l)
672 for (; gh_pair_p (l); l = gh_cdr (l))
673 if (gh_number_p (gh_car (l)))
674 s.add_point (gh_scm2int (gh_car (l)));
678 /* Return I-th element, or last elt L. If I < 0, then we take the first
681 PRE: length (L) > 0 */
683 robust_list_ref (int i, SCM l)
685 while (i-- > 0 && gh_pair_p (gh_cdr (l)))
691 robust_scm2double (SCM k, double x)
694 x = gh_scm2double (k);
699 robust_scm2interval (SCM k, Drul_array<Real> v)
704 if (is_number_pair (k))
705 i = ly_scm2interval (k);
710 robust_scm2drul (SCM k, Drul_array<Real> v)
712 if (is_number_pair (k))
713 v = ly_scm2interval (k);
718 robust_scm2offset (SCM k, Offset o)
720 if (is_number_pair (k))
721 o = ly_scm2offset (k);
726 robust_scm2int (SCM k, int o)
728 if (scm_integer_p (k) == SCM_BOOL_T)
734 alist_to_hashq (SCM alist)
736 int i = scm_ilength (alist);
738 return scm_make_vector (gh_int2scm (0), SCM_EOL);
740 SCM tab = scm_make_vector (gh_int2scm (i), SCM_EOL);
741 for (SCM s = alist; gh_pair_p (s); s = ly_cdr (s))
743 SCM pt = ly_cdar (s);
744 scm_hashq_set_x (tab, ly_caar (s), pt);
753 LY_DEFINE (ly_protects, "ly:protects", 0, 0, 0, (),
754 "Return hash of protected objects.")