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);
84 Pass string to scm parser, evaluate one expression.
85 Return result value and #chars read.
87 Thanks to Gary Houston <ghouston@freewire.co.uk>
89 Need guile-1.3.4 (>1.3 anyway) for ftell on str ports -- jcn
92 should move this func elsewhere (?)
95 ly_parse_scm (char const* s, int* n, Input ip)
97 SCM str = ly_str02scm (s);
98 SCM port = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG,
101 scm_set_port_filename_x (port, scm_makfrom0str (ip.file_string ().str0()));
102 scm_set_port_line_x (port, gh_int2scm (ip.line_number ()));
103 scm_set_port_column_x (port, gh_int2scm (ip.column_number()));
105 SCM from = scm_ftell (port);
108 SCM answer = SCM_UNSPECIFIED;
110 /* Read expression from port */
111 if (!SCM_EOF_OBJECT_P (form = scm_read (port)))
112 answer = scm_primitive_eval (form);
119 all seems fine, but after parsing
123 read_buf has been advanced to read_pos - 1,
124 so that scm_ftell returns 1, instead of #parsed chars
128 urg: reset read_buf for scm_ftell
129 shouldn't scm_read () do this for us?
131 scm_fill_input (port);
132 SCM to = scm_ftell (port);
133 *n = gh_scm2int (to) - gh_scm2int (from);
135 /* Don't close the port here; if we re-enter this function via a
136 continuation, then the next time we enter it, we'll get an error.
137 It's a string port anyway, so there's no advantage to closing it
140 scm_close_port (port);
149 return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
155 ly_symbol2string (SCM s)
157 assert (gh_symbol_p (s));
158 return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s));
163 gulp_file_to_string (String fn)
165 String s = global_path.find (fn);
168 String e = _f ("can't find file: `%s'", fn);
170 e += _f ("(load path: `%s')", global_path.string ());
173 else if (verbose_global_b)
174 progress_indication ("[" + s);
177 Simple_file_storage f (s);
178 String result (f.to_str0 ());
179 if (verbose_global_b)
180 progress_indication ("]");
184 LY_DEFINE(ly_gulp_file, "ly-gulp-file", 1,0, 0,
186 "Read the file named @var{name}, and return its contents in a string. The
187 file is looked up using the lilypond search path.
191 return ly_str02scm (gulp_file_to_string (ly_scm2string (name)).to_str0 ());
196 Read a file, and shove it down GUILE. GUILE also has file read
197 functions, but you can't fiddle with the path of those.
203 read_lily_scm_file (String fn)
205 gh_eval_str ((char *) gulp_file_to_string (fn).to_str0 ());
209 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
211 ly_display_scm (SCM s)
219 ly_scm2string (SCM s)
221 assert (gh_string_p (s));
223 char *p = SCM_STRING_CHARS(s);
229 index_get_cell (SCM s, Direction d)
232 return (d == LEFT) ? ly_car (s) : ly_cdr (s);
236 index_set_cell (SCM s, Direction d, SCM v)
245 LY_DEFINE(ly_warning,"ly-warn", 1, 0, 0,
246 (SCM str),"Scheme callable function to issue the warning @code{msg}.
249 assert (gh_string_p (str));
250 warning ("lily-guile: " + ly_scm2string (str));
254 LY_DEFINE(ly_isdir, "dir?", 1,0, 0, (SCM s),
255 "type predicate. A direction is a -1, 0 or 1, where -1 represents left or
256 down and 1 represents right or up.
261 int i = gh_scm2int (s);
262 return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
268 ly_number_pair_p (SCM p)
270 return gh_pair_p (p) && gh_number_p (ly_car (p)) && gh_number_p (ly_cdr (p));
273 typedef void (*Void_fptr) ();
274 Array<Void_fptr> *scm_init_funcs_;
276 void add_scm_init_func (void (*f) ())
278 if (!scm_init_funcs_)
279 scm_init_funcs_ = new Array<Void_fptr>;
281 scm_init_funcs_->push (f);
284 extern void init_cxx_function_smobs ();
290 SCM last_mod = scm_current_module ();
291 scm_set_current_module (scm_c_resolve_module ("guile"));
293 init_cxx_function_smobs ();
294 for (int i=scm_init_funcs_->size () ; i--;)
295 (scm_init_funcs_->elem (i)) ();
297 if (verbose_global_b)
298 progress_indication ("\n");
299 read_lily_scm_file ("lily.scm");
301 scm_set_current_module (last_mod);
304 unsigned int ly_scm_hash (SCM s)
306 return scm_ihashv (s, ~1u);
316 int i = gh_scm2int (s);
317 return i>= -1 && i <= 1;
328 int i = gh_scm2int (s);
329 return i== 0 || i == 1;
338 return (Direction) gh_scm2int (s);
342 ly_scm2interval (SCM p)
344 return Interval (gh_scm2double (ly_car (p)),
345 gh_scm2double (ly_cdr (p)));
349 ly_interval2scm (Drul_array<Real> i)
351 return gh_cons (gh_double2scm (i[LEFT]),
352 gh_double2scm (i[RIGHT]));
361 return gh_boolean_p (s) && gh_scm2bool (s);
365 Appendable list L: the cdr contains the list, the car the last cons
371 SCM s = gh_cons (SCM_EOL, SCM_EOL);
378 appendable_list_append (SCM l, SCM elt)
380 SCM newcons = gh_cons (elt, SCM_EOL);
382 gh_set_cdr_x (ly_car (l), newcons);
383 gh_set_car_x (l, newcons);
388 ly_offset2scm (Offset o)
390 return gh_cons (gh_double2scm (o[X_AXIS]), gh_double2scm (o[Y_AXIS]));
394 ly_scm2offset (SCM s)
396 return Offset (gh_scm2double (ly_car (s)),
397 gh_scm2double (ly_cdr (s)));
403 char const * cp = "unknown";
404 if (gh_number_p (exp))
408 else if (gh_string_p (exp))
412 else if (gh_procedure_p (exp))
416 else if (gh_boolean_p (exp))
420 else if (gh_pair_p (exp))
425 return ly_str02scm (cp);
429 convert without too many decimals, and leave a space at the end.
433 LY_DEFINE(ly_number2string, "ly-number->string", 1, 0,0,
435 " converts @var{num} to a string without generating many decimals. It
436 leaves a space at the end.
439 assert (gh_number_p (s));
441 char str[400]; // ugh.
443 if (scm_exact_p (s) == SCM_BOOL_F)
445 Real r (gh_scm2double (s));
447 if (isinf (r) || isnan (r))
449 programming_error ("Infinity or NaN encountered while converting Real number; setting to zero.");
453 sprintf (str, "%8.4f ", r);
457 sprintf (str, "%d ", gh_scm2int (s));
460 return ly_str02scm (str);
464 Undef this to see if GUILE GC is causing too many swaps.
470 #include <libguile/gc.h>
473 greet_sweep (void *dummy1, void *dummy2, void *dummy3)
475 fprintf (stderr, "entering sweep\n");
479 wave_sweep_goodbye (void *dummy1, void *dummy2, void *dummy3)
481 fprintf (stderr, "leaving sweep\n");
486 #include "version.hh"
487 LY_DEFINE(ly_version, "ly-version", 0, 0, 0, (),
488 "Return the current lilypond version as a list, e.g.
489 @code{(1 3 127 uu1)}.
492 char const* vs = "\' (" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ;
494 return gh_eval_str ((char*)vs);
497 LY_DEFINE(ly_unit, "ly-unit", 0, 0, 0, (),
498 "Return the unit used for lengths as a string.")
500 return ly_str02scm (INTERNAL_UNIT);
503 LY_DEFINE(ly_verbose, "ly-verbose", 0, 0, 0, (),
504 "Return whether lilypond is being run in verbose mode.")
506 return gh_bool2scm (verbose_global_b);
513 scm_c_hook_add (&scm_before_mark_c_hook, greet_sweep, 0, 0);
514 scm_c_hook_add (&scm_before_sweep_c_hook, wave_sweep_goodbye, 0, 0);
518 ADD_SCM_INIT_FUNC (funcs, init_functions);
521 ly_deep_copy (SCM src)
525 return gh_cons (ly_deep_copy (ly_car (src)), ly_deep_copy (ly_cdr (src)));
527 else if (gh_vector_p (src))
529 int l = SCM_VECTOR_LENGTH (src);
530 SCM nv = scm_c_make_vector (l, SCM_UNDEFINED);
531 for (int i =0 ; i< l ; i++)
533 SCM si = gh_int2scm (i);
534 scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si)));
547 ly_assoc_chain (SCM key, SCM achain)
549 if (gh_pair_p (achain))
551 SCM handle = scm_assoc (key, ly_car (achain));
552 if (gh_pair_p (handle))
555 return ly_assoc_chain (key, ly_cdr (achain));
561 /* looks the key up in the cdrs of the alist-keys
562 - ignoring the car and ignoring non-pair keys.
563 Returns first match found, i.e.
571 I would like (ly_assoc_cdr 1) to return 12 - because it's the first
572 element with the cdr of the key = 1. In other words (alloc_cdr key)
575 (alloc (anything . key))
581 ly_assoc_cdr (SCM key, SCM alist)
583 if (gh_pair_p (alist)) {
584 SCM trykey = ly_caar(alist);
585 if(gh_pair_p(trykey) && to_boolean(scm_equal_p(key,ly_cdr(trykey))))
586 return ly_car(alist);
588 return ly_assoc_cdr (key, ly_cdr (alist));
595 LIST has the form "sym1 sym2 sym3\nsym4\nsym5"
597 i.e. \n and ' ' can be used interchangeably as separators.
600 parse_symbol_list (const char * list)
602 char * s = strdup (list);
604 SCM create_list = SCM_EOL;
606 for (char * p = s; *p; p++)
619 char *next = strchr (s, ' ');
623 create_list = gh_cons (ly_symbol2scm (s), create_list);
633 ly_truncate_list (int k, SCM l )
643 for (; gh_pair_p (s) && k--; s = ly_cdr (s))
648 gh_set_cdr_x (s, SCM_EOL);
654 SCM my_gh_symbol2scm (const char* x)
656 return gh_symbol2scm ((char*)x);
660 print_scm_val (SCM val)
662 String realval = ly_scm2string (ly_write2scm (val));
663 if (realval.length () > 200)
664 realval = realval.left_string (100) + "\n :\n :\n" + realval.right_string (100);
670 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
678 TODO: should remove #f from allowed vals?
680 if (val == SCM_EOL || val == SCM_BOOL_F)
686 if (gh_symbol_p (sym))
687 type = scm_object_property (sym, type_symbol);
689 if (type != SCM_EOL && !gh_procedure_p (type))
691 warning (_f ("Can't find property type-check for `%s' (%s). Perhaps you made a typing error? Doing assignment anyway.",
692 ly_symbol2string (sym).to_str0 (),
693 ly_symbol2string (type_symbol).to_str0 ()
700 && gh_procedure_p (type)
701 && gh_call1 (type, val) == SCM_BOOL_F)
703 SCM errport = scm_current_error_port ();
705 SCM typefunc = scm_primitive_eval (ly_symbol2scm ("type-name"));
706 SCM type_name = gh_call1 (typefunc, type);
709 scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
710 ly_symbol2string (sym).to_str0 (),
712 ly_scm2string (type_name).to_str0 ()).to_str0 (),
714 scm_puts ("\n", errport);
723 zijn deze nou handig?
724 zijn ze er al in scheme, maar heten ze anders? */
727 /* Remove doubles from (sorted) list */
731 SCM unique = SCM_EOL;
732 for (SCM i = list; gh_pair_p (i); i = ly_cdr (i))
734 if (!gh_pair_p (ly_cdr (i))
735 || !gh_equal_p (ly_car (i), ly_cadr (i)))
736 unique = gh_cons (ly_car (i), unique);
738 return scm_reverse_x (unique, SCM_EOL);
743 ly_snoc (SCM s, SCM list)
745 return gh_append2 (list, scm_list_n (s, SCM_UNDEFINED));
749 /* Split list at member s, removing s.
750 Return (BEFORE . AFTER) */
752 ly_split_list (SCM s, SCM list)
754 SCM before = SCM_EOL;
756 for (; gh_pair_p (after);)
758 SCM i = ly_car (after);
759 after = ly_cdr (after);
760 if (gh_equal_p (i, s))
762 before = gh_cons (i, before);
764 return gh_cons ( scm_reverse_x (before, SCM_EOL), after);
778 display stuff without using stack
783 SCM p = scm_current_output_port();
786 for (; gh_pair_p(s); s =gh_cdr(s))
788 scm_display (gh_car(s), p);
792 return SCM_UNSPECIFIED;
796 int_list_to_slice (SCM l)
800 for (; gh_pair_p (l); l = gh_cdr (l))
802 if (gh_number_p (gh_car (l)))
803 s.add_point (gh_scm2int (gh_car (l)));
813 Return I-th element, or last elt L. If I < 0, then we take the first
819 robust_list_ref(int i, SCM l)
821 while (i-- > 0 && gh_pair_p (gh_cdr(l)))