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"
29 #include <libguile/gc.h>
35 assert (!SCM_CONSP (x) || (*(scm_t_bits*) SCM2PTR (SCM_CAR (x))) != scm_tc_free_cell);
36 assert (!SCM_CONSP (x) || (*(scm_t_bits*) SCM2PTR (SCM_CDR (x))) != scm_tc_free_cell);
37 #elif GUILE_MINOR_VERSION < 5
38 assert (!SCM_CONSP (x) || !SCM_FREEP (SCM_CAR (x)));
39 assert (!SCM_CONSP (x) || !SCM_FREEP (SCM_CDR (x)));
41 assert (!SCM_CONSP (x) || !SCM_FREE_CELL_P (SCM_CAR (x)));
42 assert (!SCM_CONSP (x) || !SCM_FREE_CELL_P (SCM_CDR (x)));
44 //return SCM_NFALSEP (scm_pair_p (x));
47 #define gh_pair_p ly_pair_p
53 return ly_car (scm_last_pair (list));
57 ly_str02scm (char const*c)
59 // this all really sucks, guile should take char const* arguments!
60 return gh_str02scm ((char*)c);
67 SCM port = scm_mkstrport (SCM_INUM0,
68 scm_make_string (SCM_INUM0, SCM_UNDEFINED),
71 // SCM write = scm_eval_3 (ly_symbol2scm ("write"), s, SCM_EOL);
72 SCM write = scm_primitive_eval (ly_symbol2scm ("write"));
74 // scm_apply (write, port, SCM_EOL);
75 gh_call2 (write, s, port);
76 return scm_strport_to_string (port);
81 Pass string to scm parser, evaluate one expression.
82 Return result value and #chars read.
84 Thanks to Gary Houston <ghouston@freewire.co.uk>
86 Need guile-1.3.4 (>1.3 anyway) for ftell on str ports -- jcn
89 ly_parse_scm (char const* s, int* n)
91 SCM str = ly_str02scm (s);
92 SCM port = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG,
94 SCM from = scm_ftell (port);
97 SCM answer = SCM_UNSPECIFIED;
99 /* Read expression from port */
100 if (!SCM_EOF_OBJECT_P (form = scm_read (port)))
101 answer = scm_primitive_eval (form);
108 all seems fine, but after parsing
112 read_buf has been advanced to read_pos - 1,
113 so that scm_ftell returns 1, instead of #parsed chars
117 urg: reset read_buf for scm_ftell
118 shouldn't scm_read () do this for us?
120 scm_fill_input (port);
121 SCM to = scm_ftell (port);
122 *n = gh_scm2int (to) - gh_scm2int (from);
124 /* Don't close the port here; if we re-enter this function via a
125 continuation, then the next time we enter it, we'll get an error.
126 It's a string port anyway, so there's no advantage to closing it
129 scm_close_port (port);
138 return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
144 ly_symbol2string (SCM s)
146 assert (gh_symbol_p (s));
147 return String ((Byte*)SCM_STRING_CHARS (s), (int) SCM_STRING_LENGTH (s));
152 gulp_file_to_string (String fn)
154 String s = global_path.find (fn);
157 String e = _f ("can't find file: `%s'", fn);
159 e += _f ("(load path: `%s')", global_path.str ());
162 else if (verbose_global_b)
163 progress_indication ("[" + s);
166 Simple_file_storage f (s);
167 String result (f.ch_C ());
168 if (verbose_global_b)
169 progress_indication ("]");
173 LY_DEFINE(ly_gulp_file, "ly-gulp-file", 1,0, 0,
175 "Read the file named @var{name}, and return its contents in a string. The
176 file is looked up using the lilypond search path.
180 return ly_str02scm (gulp_file_to_string (ly_scm2string (name)).ch_C ());
185 Read a file, and shove it down GUILE. GUILE also has file read
186 functions, but you can't fiddle with the path of those.
192 read_lily_scm_file (String fn)
194 gh_eval_str ((char *) gulp_file_to_string (fn).ch_C ());
198 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
200 ly_display_scm (SCM s)
208 ly_scm2string (SCM s)
210 assert (gh_string_p (s));
213 char *p = gh_scm2newstr (s , &len);
222 index_cell (SCM s, Direction d)
225 return (d == LEFT) ? ly_car (s) : ly_cdr (s);
229 index_set_cell (SCM s, Direction d, SCM v)
238 LY_DEFINE(ly_warning,"ly-warn", 1, 0, 0,
239 (SCM str),"Scheme callable function to issue the warning @code{msg}.
242 assert (gh_string_p (str));
243 warning ("lily-guile: " + ly_scm2string (str));
247 LY_DEFINE(ly_isdir_p, "dir?", 1,0, 0, (SCM s),
248 "type predicate. A direction is a -1, 0 or 1, where -1 represents left or
249 down and 1 represents right or up.
254 int i = gh_scm2int (s);
255 return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
261 ly_number_pair_p (SCM p)
263 return gh_pair_p (p) && gh_number_p (ly_car (p)) && gh_number_p (ly_cdr (p));
266 typedef void (*Void_fptr) ();
267 Array<Void_fptr> *scm_init_funcs_;
269 void add_scm_init_func (void (*f) ())
271 if (!scm_init_funcs_)
272 scm_init_funcs_ = new Array<Void_fptr>;
274 scm_init_funcs_->push (f);
277 extern void init_cxx_function_smobs ();
280 prepend_load_path (String p )
284 "(set! %%load-path (cons \"%s\" %%load-path))", p.ch_C());
286 scm_c_eval_string (s);
290 init_lily_guile (String p )
292 prepend_load_path (p);
294 // todo: junk this. We should make real modules iso. just loading files.
295 prepend_load_path (p + "/scm/");
297 SCM last_mod = scm_current_module ();
298 scm_set_current_module (scm_c_resolve_module ("guile"));
300 init_cxx_function_smobs ();
301 for (int i=scm_init_funcs_->size () ; i--;)
302 (scm_init_funcs_->elem (i)) ();
304 if (verbose_global_b)
305 progress_indication ("\n");
306 read_lily_scm_file ("lily.scm");
308 scm_set_current_module (last_mod);
311 unsigned int ly_scm_hash (SCM s)
313 return scm_ihashv (s, ~1u);
323 int i = gh_scm2int (s);
324 return i>= -1 && i <= 1;
335 int i = gh_scm2int (s);
336 return i== 0 || i == 1;
345 return (Direction) gh_scm2int (s);
349 ly_scm2interval (SCM p)
351 return Interval (gh_scm2double (ly_car (p)),
352 gh_scm2double (ly_cdr (p)));
356 ly_interval2scm (Drul_array<Real> i)
358 return gh_cons (gh_double2scm (i[LEFT]),
359 gh_double2scm (i[RIGHT]));
368 return gh_boolean_p (s) && gh_scm2bool (s);
372 Appendable list L: the cdr contains the list, the car the last cons
378 SCM s = gh_cons (SCM_EOL, SCM_EOL);
385 appendable_list_append (SCM l, SCM elt)
387 SCM newcons = gh_cons (elt, SCM_EOL);
389 gh_set_cdr_x (ly_car (l), newcons);
390 gh_set_car_x (l, newcons);
395 ly_offset2scm (Offset o)
397 return gh_cons (gh_double2scm (o[X_AXIS]), gh_double2scm (o[Y_AXIS]));
401 ly_scm2offset (SCM s)
403 return Offset (gh_scm2double (ly_car (s)),
404 gh_scm2double (ly_cdr (s)));
410 char const * cp = "unknown";
411 if (gh_number_p (exp))
415 else if (gh_string_p (exp))
419 else if (gh_procedure_p (exp))
423 else if (gh_boolean_p (exp))
427 else if (gh_pair_p (exp))
432 return ly_str02scm (cp);
436 convert without too many decimals, and leave a space at the end.
440 LY_DEFINE(ly_number2string, "ly-number->string", 1, 0,0,
442 " converts @var{num} to a string without generating many decimals. It
443 leaves a space at the end.
446 assert (gh_number_p (s));
448 char str[400]; // ugh.
450 if (scm_exact_p (s) == SCM_BOOL_F)
452 Real r (gh_scm2double (s));
454 if (isinf (r) || isnan (r))
456 programming_error ("Infinity or NaN encountered while converting Real number; setting to zero.");
460 sprintf (str, "%8.4f ", r);
464 sprintf (str, "%d ", gh_scm2int (s));
467 return ly_str02scm (str);
471 Undef this to see if GUILE GC is causing too many swaps.
477 #include <libguile/gc.h>
480 greet_sweep (void *dummy1, void *dummy2, void *dummy3)
482 fprintf (stderr, "entering sweep\n");
486 wave_sweep_goodbye (void *dummy1, void *dummy2, void *dummy3)
488 fprintf (stderr, "leaving sweep\n");
493 #include "version.hh"
494 LY_DEFINE(ly_version, "ly-version", 0, 0, 0, (),
495 "Return the current lilypond version as a list, e.g.
496 @code{(1 3 127 uu1)}.
499 char const* vs = "\' (" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")" ;
501 return gh_eval_str ((char*)vs);
504 LY_DEFINE(ly_unit, "ly-unit", 0, 0, 0, (),
505 "Return the unit used for lengths as a string.")
507 return ly_str02scm (INTERNAL_UNIT);
510 LY_DEFINE(ly_verbose, "ly-verbose", 0, 0, 0, (),
511 "Return whether lilypond is being run in verbose mode.")
513 return gh_bool2scm (verbose_global_b);
520 scm_c_hook_add (&scm_before_mark_c_hook, greet_sweep, 0, 0);
521 scm_c_hook_add (&scm_before_sweep_c_hook, wave_sweep_goodbye, 0, 0);
525 ADD_SCM_INIT_FUNC (funcs, init_functions);
532 return gh_cons (ly_deep_copy (ly_car (l)), ly_deep_copy (ly_cdr (l)));
542 ly_assoc_chain (SCM key, SCM achain)
544 if (gh_pair_p (achain))
546 SCM handle = scm_assoc (key, ly_car (achain));
547 if (gh_pair_p (handle))
550 return ly_assoc_chain (key, ly_cdr (achain));
556 /* looks the key up in the cdrs of the alist-keys
557 - ignoring the car and ignoring non-pair keys.
558 Returns first match found, i.e.
566 I would like (ly_assoc_cdr 1) to return 12 - because it's the first
567 element with the cdr of the key = 1. In other words (alloc_cdr key)
570 (alloc (anything . key))
576 ly_assoc_cdr (SCM key, SCM alist)
578 if (gh_pair_p (alist)) {
579 SCM trykey = ly_caar(alist);
580 if(gh_pair_p(trykey) && to_boolean(scm_equal_p(key,ly_cdr(trykey))))
581 return ly_car(alist);
583 return ly_assoc_cdr (key, ly_cdr (alist));
590 LIST has the form "sym1 sym2 sym3\nsym4\nsym5"
592 i.e. \n and ' ' can be used interchangeably as separators.
595 parse_symbol_list (const char * list)
597 char * s = strdup (list);
599 SCM create_list = SCM_EOL;
601 for (char * p = s; *p; p++)
614 char *next = strchr (s, ' ');
618 create_list = gh_cons (ly_symbol2scm (s), create_list);
628 ly_truncate_list (int k, SCM l )
638 for (; gh_pair_p (s) && k--; s = ly_cdr (s))
643 gh_set_cdr_x (s, SCM_EOL);
649 SCM my_gh_symbol2scm (const char* x)
651 return gh_symbol2scm ((char*)x);
655 print_scm_val (SCM val)
657 String realval = ly_scm2string (ly_write2scm (val));
658 if (realval.length_i () > 200)
659 realval = realval.left_str (100) + "\n :\n :\n" + realval.right_str (100);
665 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
673 TODO: should remove #f from allowed vals?
675 if (val == SCM_EOL || val == SCM_BOOL_F)
679 SCM type_p = SCM_EOL;
681 if (gh_symbol_p (sym))
682 type_p = scm_object_property (sym, type_symbol);
684 if (type_p != SCM_EOL && !gh_procedure_p (type_p))
686 warning (_f ("Can't find property type-check for `%s' (%s). Perhaps you made a typing error? Doing assignment anyway.",
687 ly_symbol2string (sym).ch_C (),
688 ly_symbol2string (type_symbol).ch_C ()
695 && gh_procedure_p (type_p)
696 && gh_call1 (type_p, val) == SCM_BOOL_F)
698 SCM errport = scm_current_error_port ();
700 SCM typefunc = scm_primitive_eval (ly_symbol2scm ("type-name"));
701 SCM type_name = gh_call1 (typefunc, type_p);
704 scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
705 ly_symbol2string (sym).ch_C (),
707 ly_scm2string (type_name).ch_C ()).ch_C (),
709 scm_puts ("\n", errport);
718 zijn deze nou handig?
719 zijn ze er al in scheme, maar heten ze anders? */
722 /* Remove doubles from (sorted) list */
726 SCM unique = SCM_EOL;
727 for (SCM i = list; gh_pair_p (i); i = ly_cdr (i))
729 if (!gh_pair_p (ly_cdr (i))
730 || !gh_equal_p (ly_car (i), ly_cadr (i)))
731 unique = gh_cons (ly_car (i), unique);
733 return scm_reverse_x (unique, SCM_EOL);
738 ly_snoc (SCM s, SCM list)
740 return gh_append2 (list, scm_list_n (s, SCM_UNDEFINED));
744 /* Split list at member s, removing s.
745 Return (BEFORE . AFTER) */
747 ly_split_list (SCM s, SCM list)
749 SCM before = SCM_EOL;
751 for (; gh_pair_p (after);)
753 SCM i = ly_car (after);
754 after = ly_cdr (after);
755 if (gh_equal_p (i, s))
757 before = gh_cons (i, before);
759 return gh_cons ( scm_reverse_x (before, SCM_EOL), after);