2 lily-guile.cc -- implement assorted SCM interface functions
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--2007 Jan Nieuwenhuizen <janneke@gnu.org>
7 Han-Wen Nienhuys <hanwen@xs4all.nl>
10 #include "lily-guile.hh"
14 #include <cstring> /* strdup, strchr */
19 #include "dimensions.hh"
20 #include "direction.hh"
21 #include "file-path.hh"
22 #include "international.hh"
23 #include "libc-extension.hh"
28 #include "string-convert.hh"
29 #include "source-file.hh"
38 ly_scm_write_string (SCM s)
40 SCM port = scm_mkstrport (SCM_INUM0,
41 scm_make_string (SCM_INUM0, SCM_UNDEFINED),
44 // SCM write = scm_eval_3 (ly_symbol2scm ("write"), s, SCM_EOL);
45 SCM write = scm_primitive_eval (ly_symbol2scm ("write"));
47 // scm_apply (write, port, SCM_EOL);
48 scm_call_2 (write, s, port);
49 return ly_scm2string (scm_strport_to_string (port));
55 return scm_list_n (ly_symbol2scm ("quote"), s, SCM_UNDEFINED);
59 ly_symbol2string (SCM s)
62 Ugh. this is not very efficient.
64 SCM str = scm_symbol_to_string (s);
65 return ly_scm2string (str);
69 gulp_file_to_string (string fn, bool must_exist, int size)
71 string s = global_path.find (fn);
76 string e = _f ("cannot find file: `%s'", fn);
78 e += _f ("(load path: `%s')", global_path.to_string ());
85 if (be_verbose_global)
86 progress_indication ("[" + s);
88 vector<char> chars = gulp_file (s, size);
89 string result (&chars[0], chars.size ());
91 if (be_verbose_global)
92 progress_indication ("]");
98 // maybe gdb 5.0 becomes quicker if it doesn't do fancy C++ typing?
100 ly_display_scm (SCM s)
102 scm_display (s, scm_current_output_port ());
103 scm_newline (scm_current_output_port ());
111 ly_scm2string (SCM str)
113 assert (scm_is_string (str));
114 return string (scm_i_string_chars (str),
115 (int) scm_i_string_length (str));
119 ly_string2scm (string const &str)
121 return scm_from_locale_stringn (str.c_str (),
127 ly_scm2newstr (SCM str, size_t *lenp)
129 LY_ASSERT_TYPE (scm_is_string, str, 1);
131 size_t len = scm_i_string_length (str);
132 if (char *new_str = (char *) malloc ((len + 1) * sizeof (char)))
134 memcpy (new_str, scm_i_string_chars (str), len);
150 index_get_cell (SCM s, Direction d)
154 return (d == LEFT) ? scm_car (s) : scm_cdr (s);
158 index_set_cell (SCM s, Direction d, SCM v)
161 scm_set_car_x (s, v);
163 scm_set_cdr_x (s, v);
168 is_number_pair (SCM p)
170 return scm_is_pair (p)
171 && scm_is_number (scm_car (p)) && scm_is_number (scm_cdr (p));
178 return scm_ihashv (s, ~1u);
185 if (scm_is_number (s))
187 int i = scm_to_int (s);
188 return i == 0 || i == 1;
196 return scm_is_bool (s) && ly_scm2bool (s);
205 return scm_is_integer (s) ? (Direction) scm_to_int (s) : CENTER;
209 robust_scm2dir (SCM d, Direction def)
211 if (is_direction (d))
219 if (scm_is_number (s))
221 int i = scm_to_int (s);
222 return i >= -1 && i <= 1;
231 ly_scm2interval (SCM p)
233 return Interval (scm_to_double (scm_car (p)), scm_to_double (scm_cdr (p)));
237 ly_scm2realdrul (SCM p)
239 return Drul_array<Real> (scm_to_double (scm_car (p)),
240 scm_to_double (scm_cdr (p)));
244 ly_interval2scm (Drul_array<Real> i)
246 return scm_cons (scm_from_double (i[LEFT]), scm_from_double (i[RIGHT]));
251 robust_scm2interval (SCM k, Drul_array<Real> v)
256 if (is_number_pair (k))
257 i = ly_scm2interval (k);
262 robust_scm2drul (SCM k, Drul_array<Real> v)
264 if (is_number_pair (k))
265 v = ly_scm2interval (k);
270 robust_scm2booldrul (SCM k, Drul_array<bool> def)
274 def[LEFT] = to_boolean (scm_car (k));
275 def[RIGHT] = to_boolean (scm_cdr (k));
284 ly_offset2scm (Offset o)
286 return scm_cons (scm_from_double (o[X_AXIS]), scm_from_double (o[Y_AXIS]));
290 ly_scm2offset (SCM s)
292 return Offset (scm_to_double (scm_car (s)),
293 scm_to_double (scm_cdr (s)));
297 robust_scm2offset (SCM k, Offset o)
299 if (is_number_pair (k))
300 o = ly_scm2offset (k);
304 ly_offsets2scm (vector<Offset> os)
308 for (vsize i = 0; i < os.size (); i++)
310 *tail = scm_cons (ly_offset2scm (os[i]), SCM_EOL);
311 tail = SCM_CDRLOC (*tail);
317 ly_scm2offsets (SCM s)
320 for (; scm_is_pair (s); s = scm_cdr (s))
321 os.push_back (ly_scm2offset (scm_car (s)));
333 alist_equal_p (SCM a, SCM b)
336 scm_is_pair (s); s = scm_cdr (s))
338 SCM key = scm_caar (s);
339 SCM val = scm_cdar (s);
340 SCM l = scm_assoc (key, b);
343 || !ly_is_equal (scm_cdr (l), val))
351 ly_alist_vals (SCM alist)
354 for (SCM p = alist; scm_is_pair (p); p = scm_cdr (p))
355 x = scm_cons (scm_cdar (p), x);
363 /* Return I-th element, or last elt L. If I < 0, then we take the first
366 PRE: length (L) > 0 */
368 robust_list_ref (int i, SCM l)
370 while (i-- > 0 && scm_is_pair (scm_cdr (l)))
377 ly_deep_copy (SCM src)
379 if (scm_is_pair (src))
380 return scm_cons (ly_deep_copy (scm_car (src)), ly_deep_copy (scm_cdr (src)));
381 else if (scm_is_vector (src))
383 int len = scm_c_vector_length (src);
384 SCM nv = scm_c_make_vector (len, SCM_UNDEFINED);
385 for (int i = 0;i < len; i++)
387 SCM si = scm_from_int (i);
388 scm_vector_set_x (nv, si, ly_deep_copy (scm_vector_ref (src, si)));
395 print_scm_val (SCM val)
397 string realval = ly_scm_write_string (val);
398 if (realval.length () > 200)
399 realval = realval.substr (0, 100)
401 + realval.substr (realval.length () - 100);
406 type_check_assignment (SCM sym, SCM val, SCM type_symbol)
414 TODO: should remove #f from allowed vals?
416 if (val == SCM_EOL || val == SCM_BOOL_F)
419 if (!scm_is_symbol (sym))
424 This is used for autoBeamSettings.
426 TODO: deprecate the use of \override and \revert for
429 or use a symbol autoBeamSettingS?
434 SCM type = scm_object_property (sym, type_symbol);
436 if (type != SCM_EOL && !ly_is_procedure (type))
438 warning (_f ("cannot find property type-check for `%s' (%s).",
439 ly_symbol2string (sym).c_str (),
440 ly_symbol2string (type_symbol).c_str ())
441 + " " + _ ("perhaps a typing error?"));
443 /* Be strict when being anal :) */
444 if (do_internal_type_checking_global)
445 scm_throw (ly_symbol2scm ("ly-file-failed"), scm_list_3 (ly_symbol2scm ("typecheck"),
448 warning (_ ("doing assignment anyway"));
453 && ly_is_procedure (type)
454 && scm_call_1 (type, val) == SCM_BOOL_F)
457 SCM typefunc = ly_lily_module_constant ("type-name");
458 SCM type_name = scm_call_1 (typefunc, type);
460 warning (_f ("type check for `%s' failed; value `%s' must be of type `%s'",
461 ly_symbol2string (sym).c_str (),
463 ly_scm2string (type_name).c_str ()));
464 progress_indication ("\n");
472 zijn deze nou handig?
473 zijn ze er al in scheme, maar heten ze anders? */
475 /* Remove doubles from (sorted) list */
479 SCM unique = SCM_EOL;
480 for (SCM i = list; scm_is_pair (i); i = scm_cdr (i))
482 if (!scm_is_pair (scm_cdr (i))
483 || !ly_is_equal (scm_car (i), scm_cadr (i)))
484 unique = scm_cons (scm_car (i), unique);
486 return scm_reverse_x (unique, SCM_EOL);
490 /* Split list at member s, removing s.
491 Return (BEFORE . AFTER) */
493 ly_split_list (SCM s, SCM list)
495 SCM before = SCM_EOL;
497 for (; scm_is_pair (after);)
499 SCM i = scm_car (after);
500 after = scm_cdr (after);
501 if (ly_is_equal (i, s))
503 before = scm_cons (i, before);
505 return scm_cons (scm_reverse_x (before, SCM_EOL), after);
517 display stuff without using stack
522 SCM p = scm_current_output_port ();
525 for (; scm_is_pair (s); s = scm_cdr (s))
527 scm_display (scm_car (s), p);
531 return SCM_UNSPECIFIED;
535 int_list_to_slice (SCM l)
539 for (; scm_is_pair (l); l = scm_cdr (l))
540 if (scm_is_number (scm_car (l)))
541 s.add_point (scm_to_int (scm_car (l)));
546 robust_scm2double (SCM k, double x)
548 if (scm_is_number (k))
549 x = scm_to_double (k);
555 robust_scm2string (SCM k, string s)
557 if (scm_is_string (k))
558 s = ly_scm2string (k);
563 robust_scm2int (SCM k, int o)
565 if (scm_integer_p (k) == SCM_BOOL_T)
572 ly_rational2scm (Rational r)
574 return scm_divide (scm_from_int (r.numerator ()), scm_from_int (r.denominator ()));
579 ly_scm2rational (SCM r)
581 return Rational (scm_to_int (scm_numerator (r)),
582 scm_to_int (scm_denominator (r)));
586 robust_scm2rational (SCM n, Rational rat)
588 if (ly_is_fraction (n))
589 return ly_scm2rational (n);
595 alist_to_hashq (SCM alist)
597 int i = scm_ilength (alist);
599 return scm_c_make_hash_table (0);
601 SCM tab = scm_c_make_hash_table (i);
602 for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
604 SCM pt = scm_cdar (s);
605 scm_hashq_set_x (tab, scm_caar (s), pt);
611 ly_hash2alist (SCM tab)
613 SCM func = ly_lily_module_constant ("hash-table->alist");
614 return scm_call_1 (func, tab);
623 mangle_cxx_identifier (string cxx_id)
625 if (cxx_id.substr (0, 3) == "ly_")
626 cxx_id = cxx_id.replace (0, 3, "ly:");
629 cxx_id = String_convert::to_lower (cxx_id);
630 cxx_id = "ly:" + cxx_id;
632 if (cxx_id.substr (cxx_id.length () - 2) == "_p")
633 cxx_id = cxx_id.replace (cxx_id.length () - 2, 2, "?");
634 else if (cxx_id.substr (cxx_id.length () - 2) == "_x")
635 cxx_id = cxx_id.replace (cxx_id.length () - 2, 2, "!");
637 cxx_id = replace_all (cxx_id, "_less?", "<?");
638 cxx_id = replace_all (cxx_id, "_2_", "->");
639 cxx_id = replace_all (cxx_id, "__", "::");
640 cxx_id = replace_all (cxx_id, '_', '-');
649 ly_string_array_to_scm (vector<string> a)
652 for (vsize i = a.size (); i ; i--)
653 s = scm_cons (ly_symbol2scm (a[i - 1].c_str ()), s);
657 /* SYMBOLS is a whitespace separated list. */
659 parse_symbol_list (char const *symbols)
661 while (isspace (*symbols))
664 replace_all (s, '\n', ' ');
665 replace_all (s, '\t', ' ');
666 replace_all (s, " ", " ");
667 return ly_string_array_to_scm (string_split (s, ' '));
671 struct ly_t_double_cell
679 /* inserts at front, removing duplicates */
680 SCM ly_assoc_prepend_x (SCM alist, SCM key, SCM val)
682 return scm_acons (key, val, scm_assoc_remove_x (alist, key));