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 */
18 #include "lily-proto.hh"
23 source-file.hh includes cmath which undefines isinf and isnan
25 inline int my_isinf(Real r) { return isinf(r); }
26 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);
76 ly_symbol2string (SCM s)
78 assert (gh_symbol_p (s));
79 return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s));
84 gulp_file_to_string (String fn)
86 String s = global_path.find (fn);
89 String e = _f ("can't find file: `%s'", fn);
91 e += _f ("(load path: `%s')", global_path.string ());
94 else if (verbose_global_b)
95 progress_indication ("[" + s);
99 char * str = gulp_file (s, &n);
103 if (verbose_global_b)
104 progress_indication ("]");
109 LY_DEFINE(ly_gulp_file, "ly-gulp-file", 1,0, 0,
111 "Read the file named @var{name}, and return its contents in a string. The
112 file is looked up using the lilypond search path.
116 return scm_makfrom0str (gulp_file_to_string (ly_scm2string (name)).to_str0 ());
121 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
123 ly_display_scm (SCM s)
131 ly_scm2string (SCM s)
133 assert (gh_string_p (s));
135 char *p = SCM_STRING_CHARS(s);
141 index_get_cell (SCM s, Direction d)
145 return (d == LEFT) ? ly_car (s) : ly_cdr (s);
149 index_set_cell (SCM s, Direction d, SCM v)
158 LY_DEFINE(ly_warning,"ly-warn", 1, 0, 0,
159 (SCM str),"Scheme callable function to issue the warning @code{msg}.")
161 SCM_ASSERT_TYPE (gh_string_p (str), str, SCM_ARG1, __FUNCTION__, "string");
162 warning ("lily-guile: " + ly_scm2string (str));
166 LY_DEFINE(ly_isdir, "dir?", 1,0, 0, (SCM s),
167 "type predicate. A direction is a -1, 0 or 1, where -1 represents left or
168 down and 1 represents right or up.
173 int i = gh_scm2int (s);
174 return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
180 ly_number_pair_p (SCM p)
182 return gh_pair_p (p) && gh_number_p (ly_car (p)) && gh_number_p (ly_cdr (p));
185 typedef void (*Void_fptr) ();
186 Array<Void_fptr> *scm_init_funcs_;
188 void add_scm_init_func (void (*f) ())
190 if (!scm_init_funcs_)
191 scm_init_funcs_ = new Array<Void_fptr>;
193 scm_init_funcs_->push (f);
198 ly_init_ly_module (void *data)
200 for (int i=scm_init_funcs_->size () ; i--;)
201 (scm_init_funcs_->elem (i)) ();
203 if (verbose_global_b)
204 progress_indication ("\n");
205 scm_primitive_load_path (scm_makfrom0str ("lily.scm"));
214 lily_module = scm_c_define_module ("lily", ly_init_ly_module, 0);
215 scm_c_use_module ("lily");
218 unsigned int ly_scm_hash (SCM s)
220 return scm_ihashv (s, ~1u);
230 int i = gh_scm2int (s);
231 return i>= -1 && i <= 1;
242 int i = gh_scm2int (s);
243 return i== 0 || i == 1;
252 return SCM_INUMP (s) ? (Direction) gh_scm2int (s) : CENTER;
256 ly_scm2interval (SCM p)
258 return Interval (gh_scm2double (ly_car (p)),
259 gh_scm2double (ly_cdr (p)));
263 ly_interval2scm (Drul_array<Real> i)
265 return gh_cons (gh_double2scm (i[LEFT]),
266 gh_double2scm (i[RIGHT]));
275 return gh_boolean_p (s) && gh_scm2bool (s);
279 Appendable list L: the cdr contains the list, the car the last cons
285 SCM s = gh_cons (SCM_EOL, SCM_EOL);
292 appendable_list_append (SCM l, SCM elt)
294 SCM newcons = gh_cons (elt, SCM_EOL);
296 gh_set_cdr_x (ly_car (l), newcons);
297 gh_set_car_x (l, newcons);
302 ly_offset2scm (Offset o)
304 return gh_cons (gh_double2scm (o[X_AXIS]), gh_double2scm (o[Y_AXIS]));
308 ly_scm2offset (SCM s)
310 return Offset (gh_scm2double (ly_car (s)),
311 gh_scm2double (ly_cdr (s)));
315 LY_DEFINE(ly_number2string, "ly-number->string", 1, 0,0,
317 " converts @var{num} to a string without generating many decimals. It
318 leaves a space at the end.
321 SCM_ASSERT_TYPE (gh_number_p (s), s, SCM_ARG1, __FUNCTION__, "number");
323 char str[400]; // ugh.
325 if (scm_exact_p (s) == SCM_BOOL_F)
327 Real r (gh_scm2double (s));
329 if (my_isinf (r) || my_isnan (r))
331 programming_error ("Infinity or NaN encountered while converting Real number; setting to zero.");
335 sprintf (str, "%8.4f ", r);
339 sprintf (str, "%d ", gh_scm2int (s));
342 return scm_makfrom0str (str);
346 Undef this to see if GUILE GC is causing too many swaps.
352 #include <libguile/gc.h>
355 greet_sweep (void *dummy1, void *dummy2, void *dummy3)
357 fprintf (stderr, "entering sweep\n");
361 wave_sweep_goodbye (void *dummy1, void *dummy2, void *dummy3)
363 fprintf (stderr, "leaving sweep\n");
368 #include "version.hh"
369 LY_DEFINE(ly_version, "ly-version", 0, 0, 0, (),
370 "Return the current lilypond version as a list, e.g.
371 @code{(1 3 127 uu1)}.
374 char const* vs = "\' (" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ;
376 return gh_eval_str ((char*)vs);
379 LY_DEFINE(ly_unit, "ly-unit", 0, 0, 0, (),
380 "Return the unit used for lengths as a string.")
382 return scm_makfrom0str (INTERNAL_UNIT);
385 LY_DEFINE(ly_verbose, "ly-verbose", 0, 0, 0, (),
386 "Return whether lilypond is being run in verbose mode.")
388 return gh_bool2scm (verbose_global_b);
395 scm_c_hook_add (&scm_before_mark_c_hook, greet_sweep, 0, 0);
396 scm_c_hook_add (&scm_before_sweep_c_hook, wave_sweep_goodbye, 0, 0);
400 ADD_SCM_INIT_FUNC (funcs, init_functions);
403 ly_deep_copy (SCM src)
407 return gh_cons (ly_deep_copy (ly_car (src)), ly_deep_copy (ly_cdr (src)));
409 else if (gh_vector_p (src))
411 int l = SCM_VECTOR_LENGTH (src);
412 SCM nv = scm_c_make_vector (l, SCM_UNDEFINED);
413 for (int i =0 ; i< l ; i++)
415 SCM si = gh_int2scm (i);
416 scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si)));
429 ly_assoc_chain (SCM key, SCM achain)
431 if (gh_pair_p (achain))
433 SCM handle = scm_assoc (key, ly_car (achain));
434 if (gh_pair_p (handle))
437 return ly_assoc_chain (key, ly_cdr (achain));
443 /* looks the key up in the cdrs of the alist-keys
444 - ignoring the car and ignoring non-pair keys.
445 Returns first match found, i.e.
453 I would like (ly_assoc_cdr 1) to return 12 - because it's the first
454 element with the cdr of the key = 1. In other words (alloc_cdr key)
457 (alloc (anything . key))
463 ly_assoc_cdr (SCM key, SCM alist)
465 if (gh_pair_p (alist)) {
466 SCM trykey = ly_caar(alist);
467 if(gh_pair_p(trykey) && to_boolean(scm_equal_p(key,ly_cdr(trykey))))
468 return ly_car(alist);
470 return ly_assoc_cdr (key, ly_cdr (alist));
477 LIST has the form "sym1 sym2 sym3\nsym4\nsym5"
479 i.e. \n and ' ' can be used interchangeably as separators.
482 parse_symbol_list (const char * list)
484 char * s = strdup (list);
486 SCM create_list = SCM_EOL;
488 for (char * p = s; *p; p++)
501 char *next = strchr (s, ' ');
505 create_list = gh_cons (ly_symbol2scm (s), create_list);
515 ly_truncate_list (int k, SCM l )
525 for (; gh_pair_p (s) && k--; s = ly_cdr (s))
530 gh_set_cdr_x (s, SCM_EOL);
538 print_scm_val (SCM val)
540 String realval = ly_scm2string (ly_write2scm (val));
541 if (realval.length () > 200)
542 realval = realval.left_string (100) + "\n :\n :\n" + realval.right_string (100);
548 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
556 TODO: should remove #f from allowed vals?
558 if (val == SCM_EOL || val == SCM_BOOL_F)
564 if (gh_symbol_p (sym))
565 type = scm_object_property (sym, type_symbol);
567 if (type != SCM_EOL && !gh_procedure_p (type))
569 warning (_f ("Can't find property type-check for `%s' (%s).",
570 ly_symbol2string (sym).to_str0 (),
571 ly_symbol2string (type_symbol).to_str0 ())
572 + " " + _ ("Perhaps you made a typing error?"));
574 /* Be strict when being anal :) */
575 if (internal_type_checking_global_b)
578 warning (_ ("Doing assignment anyway."));
583 && gh_procedure_p (type)
584 && gh_call1 (type, val) == SCM_BOOL_F)
586 SCM errport = scm_current_error_port ();
588 SCM typefunc = scm_primitive_eval (ly_symbol2scm ("type-name"));
589 SCM type_name = gh_call1 (typefunc, type);
592 scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
593 ly_symbol2string (sym).to_str0 (),
595 ly_scm2string (type_name).to_str0 ()).to_str0 (),
597 scm_puts ("\n", errport);
606 zijn deze nou handig?
607 zijn ze er al in scheme, maar heten ze anders? */
610 /* Remove doubles from (sorted) list */
614 SCM unique = SCM_EOL;
615 for (SCM i = list; gh_pair_p (i); i = ly_cdr (i))
617 if (!gh_pair_p (ly_cdr (i))
618 || !gh_equal_p (ly_car (i), ly_cadr (i)))
619 unique = gh_cons (ly_car (i), unique);
621 return scm_reverse_x (unique, SCM_EOL);
626 ly_snoc (SCM s, SCM list)
628 return gh_append2 (list, scm_list_n (s, SCM_UNDEFINED));
632 /* Split list at member s, removing s.
633 Return (BEFORE . AFTER) */
635 ly_split_list (SCM s, SCM list)
637 SCM before = SCM_EOL;
639 for (; gh_pair_p (after);)
641 SCM i = ly_car (after);
642 after = ly_cdr (after);
643 if (gh_equal_p (i, s))
645 before = gh_cons (i, before);
647 return gh_cons ( scm_reverse_x (before, SCM_EOL), after);
661 display stuff without using stack
666 SCM p = scm_current_output_port();
669 for (; gh_pair_p(s); s =gh_cdr(s))
671 scm_display (gh_car(s), p);
675 return SCM_UNSPECIFIED;
679 int_list_to_slice (SCM l)
683 for (; gh_pair_p (l); l = gh_cdr (l))
685 if (gh_number_p (gh_car (l)))
686 s.add_point (gh_scm2int (gh_car (l)));
696 Return I-th element, or last elt L. If I < 0, then we take the first
702 robust_list_ref(int i, SCM l)
704 while (i-- > 0 && gh_pair_p (gh_cdr(l)))