1 %{ // -*-Fundamental-*-
3 lexer.l -- implement the Flex lexer
5 source file of the LilyPond music typesetter
7 (c) 1996--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 Jan Nieuwenhuizen <janneke@gnu.org>
15 after making a change to the lexer rules, run
16 flex -b <this lexer file>
19 contains no backup states, but only the reminder
20 Compressed tables always back up.
21 (don-t forget to rm lex.yy.cc :-)
31 #include "parse-scm.hh"
32 #include "lily-guile.hh"
34 #include "string-convert.hh"
35 #include "my-lily-lexer.hh"
36 #include "input-file-results.hh"
37 #include "interval.hh"
38 #include "lily-guile.hh"
43 #include "lilypond-input-version.hh"
44 #include "translator-def.hh"
45 #include "identifier-smob.hh"
50 #define isatty HORRIBLEKLUDGE
52 void strip_trailing_white (String&);
53 void strip_leading_white (String&);
54 String lyric_fudge (String s);
57 lookup_markup_command (String s);
60 valid_version_b (String s);
64 #define start_quote() \
65 yy_push_state (quote);\
66 yylval.string = new String
71 #define YY_USER_ACTION add_lexed_char (YYLeng ());
74 LYRICS ({AA}|{TEX})[^0-9 \t\n\f]*
79 SCM scan_fraction (String);
80 SCM (* scm_parse_error_handler) (void *);
90 %option yyclass="My_lily_lexer"
92 %option never-interactive
111 NATIONAL [\001-\006\021-\027\031\036\200-\377]
112 TEX {AA}|-|{PUNCT}|{ACCENT}|{NATIONAL}
120 REAL ({INT}\.{N}*)|(-?\.{N}+)
123 HORIZONTALWHITE [ \t]
127 LYRICS ({AA}|{TEX})[^0-9 \t\n\f]*
135 // windows-suck-suck-suck
138 <INITIAL,chords,incl,lyrics,notes,figures>{
140 yy_push_state (longcomment);
144 %[^{\n] { // backup rule
155 <INITIAL,chords,lyrics,notes,figures>\\version{WHITE}* {
156 yy_push_state (version);
158 <version>\"[^"]*\" { /* got the version number */
159 String s (YYText ()+1);
160 s = s.left_string (s.index_last ('\"'));
163 if (!valid_version_b (s))
167 LexerError ("No quoted string found after \\version");
180 LexerError (_ ("EOF found inside a comment").to_str0 ());
181 if (! close_input ())
182 yyterminate (); // can't move this, since it actually rets a YY_NULL
187 <INITIAL,chords,lyrics,notes,figures>\\maininput {
191 main_input_b_ = true;
194 error (_ ("\\maininput disallowed outside init files"));
197 <INITIAL,chords,lyrics,figures,notes>\\include {
198 yy_push_state (incl);
200 <incl>\"[^"]*\";? { /* got the include file name */
201 String s (YYText ()+1);
202 s = s.left_string (s.index_last ('"'));
204 new_input (s, &global_input_file->sources_ );
207 <incl>\\{BLACK}*;?{WHITE} { /* got the include identifier */
208 String s = YYText () + 1;
209 strip_trailing_white (s);
210 if (s.length () && (s[s.length () - 1] == ';'))
211 s = s.left_string (s.length () - 1);
213 SCM sid = lookup_identifier (s);
214 if (gh_string_p (sid)) {
215 new_input (ly_scm2string (sid), &global_input_file->sources_);
218 String msg (_f ("wrong or undefined identifier: `%s'", s ));
220 LexerError (msg.to_str0 ());
221 SCM err = scm_current_error_port ();
222 scm_puts ("This value was found in the table: ", err);
223 scm_display (sid, err);
226 <incl>\"[^"]* { // backup rule
227 error (_ ("Missing end quote"));
230 <chords,notes,figures>{RESTNAME} {
231 const char *s = YYText ();
232 yylval.scm = scm_makfrom0str (s);
235 <chords,notes,figures>R {
236 return MULTI_MEASURE_REST;
238 <INITIAL,chords,lyrics,notes,figures>\\\${BLACK}*{WHITE} {
239 String s=YYText () + 2;
240 s=s.left_string (s.length () - 1);
241 return scan_escaped_word (s);
243 <INITIAL,chords,lyrics,notes,figures>\${BLACK}*{WHITE} {
244 String s=YYText () + 1;
245 s=s.left_string (s.length () - 1);
246 return scan_bare_word (s);
248 <INITIAL,chords,lyrics,notes,figures>\\\${BLACK}* { // backup rule
249 error (_("white expected"));
252 <INITIAL,chords,lyrics,notes,figures>\${BLACK}* { // backup rule
253 error (_("white expected"));
257 <INITIAL,markup,chords,lyrics,notes,figures># { //embedded scm
258 //char const* s = YYText () + 1;
259 char const* s = here_str0 ();
261 if (main_input_b_ && safe_global_b) {
262 error (_ ("Can't evaluate Scheme in safe mode"));
263 yylval.scm = SCM_EOL;
266 SCM sval = ly_parse_scm (s, &n, here_input());
267 if (sval == SCM_UNDEFINED)
269 sval = SCM_UNSPECIFIED;
273 for (int i=0; i < n; i++)
277 char_count_stack_.top () += n;
279 if (unpack_identifier (sval) != SCM_UNDEFINED)
281 yylval.scm = unpack_identifier(sval);
282 return identifier_type (yylval.scm);
310 return scan_bare_word (YYText ());
314 return scan_escaped_word (YYText () + 1);
317 yylval.scm = scan_fraction (YYText ());
322 yylval.i = String_convert::dec2int (String (YYText ()));
326 yylval.i = String_convert::dec2int (String (YYText ()));
330 yylval.i = String_convert::dec2int (String (YYText () +1));
344 *yylval.string += to_string (escaped_char (YYText ()[1]));
347 *yylval.string += YYText ();
353 /* yylval is union. Must remember STRING before setting SCM*/
354 String *sp = yylval.string;
355 yylval.scm = scm_makfrom0str (sp->to_str0 ());
360 *yylval.string += YYText ();
369 yylval.scm = scan_fraction (YYText ());
373 yylval.i = String_convert::dec2int (String (YYText ()));
377 return scan_escaped_word (YYText () + 1);
381 String s (YYText ());
383 return yylval.i = EXTENDER;
385 return yylval.i = HYPHEN;
388 char c = s[s.length () - 1];
389 if (c == '{' || c == '}') // brace open is for not confusing dumb tools.
390 here_input ().warning (
391 _ ("Brace found at end of lyric. Did you forget a space?"));
392 yylval.scm = scm_makfrom0str (s.to_str0 ());
403 return scan_bare_word (YYText ());
406 return scan_escaped_word (YYText () + 1);
409 yylval.scm = scan_fraction (YYText ());
413 yylval.i = String_convert::dec2int (String (YYText ()));
445 String str (YYText() + 1);
446 SCM s = lookup_markup_command (str);
449 yylval.scm = gh_car(s);
451 if (tag == ly_symbol2scm("markup0"))
452 return MARKUP_HEAD_MARKUP0;
453 else if (tag == ly_symbol2scm ("markup0-markup1"))
454 return MARKUP_HEAD_MARKUP0_MARKUP1;
455 else if (tag == ly_symbol2scm ("markup-list0"))
456 return MARKUP_HEAD_LIST0;
457 else if (tag == ly_symbol2scm ("scm0"))
458 return MARKUP_HEAD_SCM0;
459 else if (tag == ly_symbol2scm ("scm0-scm1"))
460 return MARKUP_HEAD_SCM0_SCM1;
461 else if (tag == ly_symbol2scm ("scm0-markup1"))
462 return MARKUP_HEAD_SCM0_MARKUP1;
463 else if (tag == ly_symbol2scm ("scm0-scm1-markup2"))
464 return MARKUP_HEAD_SCM0_SCM1_MARKUP2;
470 return scan_escaped_word (str);
474 String s (YYText ());
476 return yylval.i = EXTENDER;
478 return yylval.i = HYPHEN;
481 char c = s[s.length () - 1];
482 if (c == '{' || c == '}') // brace open is for not confusing dumb tools.
483 here_input ().warning (
484 _ ("Brace found at end of lyric. Did you forget a space?"));
485 yylval.scm = scm_makfrom0str (s.to_str0 ());
501 if (! close_input ()) {
502 yyterminate (); // can't move this, since it actually rets a YY_NULL
508 return scan_bare_word (YYText ());
511 return scan_escaped_word (YYText () + 1);
515 int cnv=sscanf (YYText (), "%lf", &r);
518 yylval.scm = gh_double2scm (r);
523 yylval.i = String_convert::dec2int (String (YYText ()));
533 char c = YYText ()[0];
538 <INITIAL,notes,figures>. {
542 <INITIAL,lyrics,notes,figures>\\. {
543 char c= YYText ()[1];
551 return E_EXCLAMATION;
559 return E_RIGHTSQUARE;
571 String msg = _f ("invalid character: `%c'", YYText ()[0]);
572 LexerError (msg.to_str0 ());
579 My_lily_lexer::push_note_state ()
581 yy_push_state (notes);
585 My_lily_lexer::push_figuredbass_state()
587 yy_push_state (figures);
590 My_lily_lexer::push_chord_state ()
592 yy_push_state (chords);
596 My_lily_lexer::push_lyric_state ()
598 yy_push_state (lyrics);
602 My_lily_lexer::push_markup_state ()
604 yy_push_state (markup);
608 My_lily_lexer::pop_state ()
614 My_lily_lexer::identifier_type(SCM sid)
616 int k = try_special_identifiers(&yylval.scm , sid);
617 return k >= 0 ? k : SCM_IDENTIFIER;
622 My_lily_lexer::scan_escaped_word (String str)
624 // use more SCM for this.
626 SCM sym = ly_symbol2scm (str.to_str0 ());
628 int l = lookup_keyword (str);
632 SCM sid = lookup_identifier (str);
633 if (sid != SCM_UNDEFINED)
636 return identifier_type (sid);
639 if ((YYSTATE != notes) && (YYSTATE != chords)) {
640 SCM pitch = scm_hashq_get_handle (pitchname_tab_, sym);
642 if (gh_pair_p (pitch))
644 yylval.scm = ly_cdr (pitch);
645 return NOTENAME_PITCH;
648 String msg (_f ("unknown escaped string: `\\%s'", str));
649 LexerError (msg.to_str0 ());
651 yylval.scm = scm_makfrom0str (str.to_str0 ());
657 My_lily_lexer::scan_bare_word (String str)
659 SCM sym = ly_symbol2scm (str.to_str0 ());
660 if ((YYSTATE == notes) || (YYSTATE == chords)) {
661 SCM pitch = scm_hashq_get_handle (pitchname_tab_, sym);
662 if (gh_pair_p (pitch)) {
663 yylval.scm = ly_cdr (pitch);
664 return (YYSTATE == notes) ? NOTENAME_PITCH : TONICNAME_PITCH;
665 } else if ((pitch = scm_hashq_get_handle (chordmodifier_tab_, sym))!= SCM_BOOL_F)
667 yylval.scm = ly_cdr (pitch);
668 return CHORDMODIFIER_PITCH;
672 yylval.scm = scm_makfrom0str (str.to_str0 ());
677 My_lily_lexer::note_state_b () const
679 return YY_START == notes;
683 My_lily_lexer::chord_state_b () const
685 return YY_START == chords;
689 My_lily_lexer::lyric_state_b () const
691 return YY_START == lyrics;
695 My_lily_lexer::figure_state_b () const
697 return YY_START == figures;
701 urg, belong to String (_convert)
702 and should be generalised
705 strip_leading_white (String&s)
708 for (; i < s.length (); i++)
712 s = s.nomid_string (0, i);
716 strip_trailing_white (String&s)
723 s = s.left_string (i+1);
728 /* 1.3.146 == removal of ; */
729 Lilypond_version oldest_version ("1.3.146");
733 valid_version_b (String s)
735 Lilypond_version current ( MAJOR_VERSION "." MINOR_VERSION "." PATCH_LEVEL );
736 Lilypond_version ver (s);
737 if (! ((ver >= oldest_version) && (ver <= current)))
739 non_fatal_error (_f ("Incorrect lilypond version: %s (%s, %s)", ver.string (), oldest_version.string (), current.string ()));
740 non_fatal_error (_ ("Consider updating the input with the convert-ly script"));
748 lyric_fudge (String s)
750 char * chars =s.get_copy_str0 ();
752 for (char * p = chars; *p ; p++)
754 if (*p == '_' && (p == chars || *(p-1) != '\\'))
762 if ((i=s.index ("\\,")) != -1) // change "\," to TeX's "\c "
764 * (s.get_str0 () + i + 1) = 'c';
765 s = s.left_string (i+2) + " " + s.right_string (s.length ()-i-2);
772 Convert "NUM/DEN" into a '(NUM . DEN) cons.
775 scan_fraction (String frac)
777 int i = frac.index ('/');
778 int l = frac.length ();
779 String left = frac.left_string (i);
780 String right = frac.right_string (l - i - 1);
782 int n = String_convert::dec2int (left);
783 int d = String_convert::dec2int (right);
784 return gh_cons (gh_int2scm (n), gh_int2scm (d));
787 /* avoid silly flex induced gcc warnings */
788 static void yy_push_state (int) {;}
789 static void yy_pop_state () {;}
790 static int yy_top_state () { return 0; }
793 avoid_silly_flex_induced_gcc_warnings ()
795 (void)yy_start_stack_ptr;
796 (void)yy_start_stack_depth;
797 (void)yy_start_stack;
801 avoid_silly_flex_induced_gcc_warnings ();
805 lookup_markup_command (String s)
809 proc = scm_c_eval_string ("lookup-markup-command");
811 return scm_call_1 (proc, scm_makfrom0str (s.to_str0 ()));