2 lily-guile.cc -- implement assorted guile functions
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
8 Han-Wen Nienhuys <hanwen@cs.uu.nl>
14 #include <math.h> /* isinf */
15 #include <string.h> /* strdup, strchr */
16 #include "libc-extension.hh"
17 #include "lily-guile.hh"
19 #include "simple-file-storage.hh"
20 #include "file-path.hh"
22 #include "direction.hh"
24 #include "interval.hh"
26 #include "dimensions.hh"
32 #include <libguile/gc.h>
38 assert (!SCM_CONSP (x) || (*(scm_t_bits*) SCM2PTR (SCM_CAR (x))) != scm_tc_free_cell);
39 assert (!SCM_CONSP (x) || (*(scm_t_bits*) SCM2PTR (SCM_CDR (x))) != scm_tc_free_cell);
40 #elif GUILE_MINOR_VERSION < 5
41 assert (!SCM_CONSP (x) || !SCM_FREEP (SCM_CAR (x)));
42 assert (!SCM_CONSP (x) || !SCM_FREEP (SCM_CDR (x)));
44 assert (!SCM_CONSP (x) || !SCM_FREE_CELL_P (SCM_CAR (x)));
45 assert (!SCM_CONSP (x) || !SCM_FREE_CELL_P (SCM_CDR (x)));
47 //return SCM_NFALSEP (scm_pair_p (x));
50 #define gh_pair_p ly_pair_p
56 return ly_car (scm_last_pair (list));
60 ly_str02scm (char const*c)
62 // this all really sucks, guile should take char const* arguments!
63 return gh_str02scm ((char*)c);
70 SCM port = scm_mkstrport (SCM_INUM0,
71 scm_make_string (SCM_INUM0, SCM_UNDEFINED),
74 // SCM write = scm_eval_3 (ly_symbol2scm ("write"), s, SCM_EOL);
75 SCM write = scm_primitive_eval (ly_symbol2scm ("write"));
77 // scm_apply (write, port, SCM_EOL);
78 gh_call2 (write, s, port);
79 return scm_strport_to_string (port);
86 return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
92 ly_symbol2string (SCM s)
94 assert (gh_symbol_p (s));
95 return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s));
100 gulp_file_to_string (String fn)
102 String s = global_path.find (fn);
105 String e = _f ("can't find file: `%s'", fn);
107 e += _f ("(load path: `%s')", global_path.string ());
110 else if (verbose_global_b)
111 progress_indication ("[" + s);
114 Simple_file_storage f (s);
115 String result (f.to_str0 ());
116 if (verbose_global_b)
117 progress_indication ("]");
121 LY_DEFINE(ly_gulp_file, "ly-gulp-file", 1,0, 0,
123 "Read the file named @var{name}, and return its contents in a string. The
124 file is looked up using the lilypond search path.
128 return ly_str02scm (gulp_file_to_string (ly_scm2string (name)).to_str0 ());
133 Read a file, and shove it down GUILE. GUILE also has file read
134 functions, but you can't fiddle with the path of those.
140 read_lily_scm_file (String fn)
142 gh_eval_str ((char *) gulp_file_to_string (fn).to_str0 ());
146 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
148 ly_display_scm (SCM s)
156 ly_scm2string (SCM s)
158 assert (gh_string_p (s));
160 char *p = SCM_STRING_CHARS(s);
166 index_get_cell (SCM s, Direction d)
169 return (d == LEFT) ? ly_car (s) : ly_cdr (s);
173 index_set_cell (SCM s, Direction d, SCM v)
182 LY_DEFINE(ly_warning,"ly-warn", 1, 0, 0,
183 (SCM str),"Scheme callable function to issue the warning @code{msg}.
186 assert (gh_string_p (str));
187 warning ("lily-guile: " + ly_scm2string (str));
191 LY_DEFINE(ly_isdir, "dir?", 1,0, 0, (SCM s),
192 "type predicate. A direction is a -1, 0 or 1, where -1 represents left or
193 down and 1 represents right or up.
198 int i = gh_scm2int (s);
199 return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
205 ly_number_pair_p (SCM p)
207 return gh_pair_p (p) && gh_number_p (ly_car (p)) && gh_number_p (ly_cdr (p));
210 typedef void (*Void_fptr) ();
211 Array<Void_fptr> *scm_init_funcs_;
213 void add_scm_init_func (void (*f) ())
215 if (!scm_init_funcs_)
216 scm_init_funcs_ = new Array<Void_fptr>;
218 scm_init_funcs_->push (f);
221 extern void init_cxx_function_smobs ();
227 SCM last_mod = scm_current_module ();
228 scm_set_current_module (scm_c_resolve_module ("guile"));
230 init_cxx_function_smobs ();
231 for (int i=scm_init_funcs_->size () ; i--;)
232 (scm_init_funcs_->elem (i)) ();
234 if (verbose_global_b)
235 progress_indication ("\n");
236 read_lily_scm_file ("lily.scm");
238 scm_set_current_module (last_mod);
241 unsigned int ly_scm_hash (SCM s)
243 return scm_ihashv (s, ~1u);
253 int i = gh_scm2int (s);
254 return i>= -1 && i <= 1;
265 int i = gh_scm2int (s);
266 return i== 0 || i == 1;
275 return (Direction) gh_scm2int (s);
279 ly_scm2interval (SCM p)
281 return Interval (gh_scm2double (ly_car (p)),
282 gh_scm2double (ly_cdr (p)));
286 ly_interval2scm (Drul_array<Real> i)
288 return gh_cons (gh_double2scm (i[LEFT]),
289 gh_double2scm (i[RIGHT]));
298 return gh_boolean_p (s) && gh_scm2bool (s);
302 Appendable list L: the cdr contains the list, the car the last cons
308 SCM s = gh_cons (SCM_EOL, SCM_EOL);
315 appendable_list_append (SCM l, SCM elt)
317 SCM newcons = gh_cons (elt, SCM_EOL);
319 gh_set_cdr_x (ly_car (l), newcons);
320 gh_set_car_x (l, newcons);
325 ly_offset2scm (Offset o)
327 return gh_cons (gh_double2scm (o[X_AXIS]), gh_double2scm (o[Y_AXIS]));
331 ly_scm2offset (SCM s)
333 return Offset (gh_scm2double (ly_car (s)),
334 gh_scm2double (ly_cdr (s)));
340 char const * cp = "unknown";
341 if (gh_number_p (exp))
345 else if (gh_string_p (exp))
349 else if (gh_procedure_p (exp))
353 else if (gh_boolean_p (exp))
357 else if (gh_pair_p (exp))
362 return ly_str02scm (cp);
366 convert without too many decimals, and leave a space at the end.
370 LY_DEFINE(ly_number2string, "ly-number->string", 1, 0,0,
372 " converts @var{num} to a string without generating many decimals. It
373 leaves a space at the end.
376 assert (gh_number_p (s));
378 char str[400]; // ugh.
380 if (scm_exact_p (s) == SCM_BOOL_F)
382 Real r (gh_scm2double (s));
384 if (isinf (r) || isnan (r))
386 programming_error ("Infinity or NaN encountered while converting Real number; setting to zero.");
390 sprintf (str, "%8.4f ", r);
394 sprintf (str, "%d ", gh_scm2int (s));
397 return ly_str02scm (str);
401 Undef this to see if GUILE GC is causing too many swaps.
407 #include <libguile/gc.h>
410 greet_sweep (void *dummy1, void *dummy2, void *dummy3)
412 fprintf (stderr, "entering sweep\n");
416 wave_sweep_goodbye (void *dummy1, void *dummy2, void *dummy3)
418 fprintf (stderr, "leaving sweep\n");
423 #include "version.hh"
424 LY_DEFINE(ly_version, "ly-version", 0, 0, 0, (),
425 "Return the current lilypond version as a list, e.g.
426 @code{(1 3 127 uu1)}.
429 char const* vs = "\' (" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ;
431 return gh_eval_str ((char*)vs);
434 LY_DEFINE(ly_unit, "ly-unit", 0, 0, 0, (),
435 "Return the unit used for lengths as a string.")
437 return ly_str02scm (INTERNAL_UNIT);
440 LY_DEFINE(ly_verbose, "ly-verbose", 0, 0, 0, (),
441 "Return whether lilypond is being run in verbose mode.")
443 return gh_bool2scm (verbose_global_b);
450 scm_c_hook_add (&scm_before_mark_c_hook, greet_sweep, 0, 0);
451 scm_c_hook_add (&scm_before_sweep_c_hook, wave_sweep_goodbye, 0, 0);
455 ADD_SCM_INIT_FUNC (funcs, init_functions);
458 ly_deep_copy (SCM src)
462 return gh_cons (ly_deep_copy (ly_car (src)), ly_deep_copy (ly_cdr (src)));
464 else if (gh_vector_p (src))
466 int l = SCM_VECTOR_LENGTH (src);
467 SCM nv = scm_c_make_vector (l, SCM_UNDEFINED);
468 for (int i =0 ; i< l ; i++)
470 SCM si = gh_int2scm (i);
471 scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si)));
484 ly_assoc_chain (SCM key, SCM achain)
486 if (gh_pair_p (achain))
488 SCM handle = scm_assoc (key, ly_car (achain));
489 if (gh_pair_p (handle))
492 return ly_assoc_chain (key, ly_cdr (achain));
498 /* looks the key up in the cdrs of the alist-keys
499 - ignoring the car and ignoring non-pair keys.
500 Returns first match found, i.e.
508 I would like (ly_assoc_cdr 1) to return 12 - because it's the first
509 element with the cdr of the key = 1. In other words (alloc_cdr key)
512 (alloc (anything . key))
518 ly_assoc_cdr (SCM key, SCM alist)
520 if (gh_pair_p (alist)) {
521 SCM trykey = ly_caar(alist);
522 if(gh_pair_p(trykey) && to_boolean(scm_equal_p(key,ly_cdr(trykey))))
523 return ly_car(alist);
525 return ly_assoc_cdr (key, ly_cdr (alist));
532 LIST has the form "sym1 sym2 sym3\nsym4\nsym5"
534 i.e. \n and ' ' can be used interchangeably as separators.
537 parse_symbol_list (const char * list)
539 char * s = strdup (list);
541 SCM create_list = SCM_EOL;
543 for (char * p = s; *p; p++)
556 char *next = strchr (s, ' ');
560 create_list = gh_cons (ly_symbol2scm (s), create_list);
570 ly_truncate_list (int k, SCM l )
580 for (; gh_pair_p (s) && k--; s = ly_cdr (s))
585 gh_set_cdr_x (s, SCM_EOL);
591 SCM my_gh_symbol2scm (const char* x)
593 return gh_symbol2scm ((char*)x);
597 print_scm_val (SCM val)
599 String realval = ly_scm2string (ly_write2scm (val));
600 if (realval.length () > 200)
601 realval = realval.left_string (100) + "\n :\n :\n" + realval.right_string (100);
607 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
615 TODO: should remove #f from allowed vals?
617 if (val == SCM_EOL || val == SCM_BOOL_F)
623 if (gh_symbol_p (sym))
624 type = scm_object_property (sym, type_symbol);
626 if (type != SCM_EOL && !gh_procedure_p (type))
628 warning (_f ("Can't find property type-check for `%s' (%s). Perhaps you made a typing error? Doing assignment anyway.",
629 ly_symbol2string (sym).to_str0 (),
630 ly_symbol2string (type_symbol).to_str0 ()
637 && gh_procedure_p (type)
638 && gh_call1 (type, val) == SCM_BOOL_F)
640 SCM errport = scm_current_error_port ();
642 SCM typefunc = scm_primitive_eval (ly_symbol2scm ("type-name"));
643 SCM type_name = gh_call1 (typefunc, type);
646 scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
647 ly_symbol2string (sym).to_str0 (),
649 ly_scm2string (type_name).to_str0 ()).to_str0 (),
651 scm_puts ("\n", errport);
660 zijn deze nou handig?
661 zijn ze er al in scheme, maar heten ze anders? */
664 /* Remove doubles from (sorted) list */
668 SCM unique = SCM_EOL;
669 for (SCM i = list; gh_pair_p (i); i = ly_cdr (i))
671 if (!gh_pair_p (ly_cdr (i))
672 || !gh_equal_p (ly_car (i), ly_cadr (i)))
673 unique = gh_cons (ly_car (i), unique);
675 return scm_reverse_x (unique, SCM_EOL);
680 ly_snoc (SCM s, SCM list)
682 return gh_append2 (list, scm_list_n (s, SCM_UNDEFINED));
686 /* Split list at member s, removing s.
687 Return (BEFORE . AFTER) */
689 ly_split_list (SCM s, SCM list)
691 SCM before = SCM_EOL;
693 for (; gh_pair_p (after);)
695 SCM i = ly_car (after);
696 after = ly_cdr (after);
697 if (gh_equal_p (i, s))
699 before = gh_cons (i, before);
701 return gh_cons ( scm_reverse_x (before, SCM_EOL), after);
715 display stuff without using stack
720 SCM p = scm_current_output_port();
723 for (; gh_pair_p(s); s =gh_cdr(s))
725 scm_display (gh_car(s), p);
729 return SCM_UNSPECIFIED;
733 int_list_to_slice (SCM l)
737 for (; gh_pair_p (l); l = gh_cdr (l))
739 if (gh_number_p (gh_car (l)))
740 s.add_point (gh_scm2int (gh_car (l)));
750 Return I-th element, or last elt L. If I < 0, then we take the first
756 robust_list_ref(int i, SCM l)
758 while (i-- > 0 && gh_pair_p (gh_cdr(l)))