1 %{ // -*-Fundamental-*-
3 lexer.l -- implement the Flex lexer
5 source file of the LilyPond music typesetter
7 (c) 1996--2000 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 :-)
29 #include "lily-guile.hh"
31 #include "string-convert.hh"
32 #include "my-lily-lexer.hh"
34 #include "interval.hh"
35 #include "lily-guile.hh"
39 #include "musical-request.hh"
41 #include "lilypond-input-version.hh"
42 #include "translator-def.hh"
43 #include "music-output-def.hh"
48 #define isatty HORRIBLEKLUDGE
50 void strip_trailing_white (String&);
51 void strip_leading_white (String&);
52 String lyric_fudge (String s);
56 valid_version_b (String s);
60 #define start_quote() \
61 yy_push_state (quote);\
62 yylval.string = new String
67 #define YY_USER_ACTION add_lexed_char (YYLeng ());
70 LYRICS ({AA}|{TEX})[^0-9 \t\n\f]*
80 %option yyclass="My_lily_lexer"
82 %option never-interactive
100 NATIONAL [\001-\006\021-\027\031\036\200-\377]
101 TEX {AA}|-|{PUNCT}|{ACCENT}|{NATIONAL}
107 REAL ({INT}\.{N}*)|(-?\.{N}+)
110 HORIZONTALWHITE [ \t]
114 LYRICS ({AA}|{TEX})[^0-9 \t\n\f]*
122 // windows-suck-suck-suck
125 <INITIAL,chords,incl,lyrics,notes>{
127 yy_push_state (longcomment);
131 %[^{\n] { // backup rule
142 <INITIAL,chords,lyrics,notes>\\version{WHITE}* {
143 yy_push_state (version);
145 <version>\"[^"]*\";? { /* got the include file name */
146 String s (YYText ()+1);
147 s = s.left_str (s.index_last_i ('"'));
148 DEBUG_OUT << "#version `" << s << "'\n";
150 if (!valid_version_b (s))
154 LexerError ("No quoted string found after \\version");
167 LexerError (_ ("EOF found inside a comment").ch_C ());
168 if (! close_input ())
169 yyterminate (); // can't move this, since it actually rets a YY_NULL
174 <INITIAL,chords,lyrics,notes>\\maininput {
178 main_input_b_ = true;
181 error (_ ("\\maininput disallowed outside init files"));
184 <INITIAL,chords,lyrics,notes>\\include {
185 yy_push_state (incl);
187 <incl>\"[^"]*\";? { /* got the include file name */
188 String s (YYText ()+1);
189 s = s.left_str (s.index_last_i ('"'));
190 DEBUG_OUT << "#include `" << s << "'\n";
191 new_input (s,source_global_l);
194 <incl>\\{BLACK}*;?{WHITE} { /* got the include identifier */
195 String s = YYText () + 1;
196 strip_trailing_white (s);
197 if (s.length_i () && (s[s.length_i () - 1] == ';'))
198 s = s.left_str (s.length_i () - 1);
199 DEBUG_OUT << "#include `\\" << s << "'\n";
200 SCM sid = lookup_identifier (s);
201 if (gh_string_p (sid)) {
202 new_input (ly_scm2string (sid), source_global_l);
205 String msg (_f ("wrong or undefined identifier: `%s'", s ));
206 LexerError (msg.ch_C ());
209 <incl>\"[^"]* { // backup rule
210 cerr << _ ("Missing end quote") << endl;
213 <chords,notes>{RESTNAME} {
214 const char *s = YYText ();
215 yylval.scm = ly_str02scm (s);
219 return MULTI_MEASURE_REST;
221 <INITIAL,chords,lyrics,notes>\\\${BLACK}*{WHITE} {
222 String s=YYText () + 2;
223 s=s.left_str (s.length_i () - 1);
224 return scan_escaped_word (s);
226 <INITIAL,chords,lyrics,notes>\${BLACK}*{WHITE} {
227 String s=YYText () + 1;
228 s=s.left_str (s.length_i () - 1);
229 return scan_bare_word (s);
231 <INITIAL,chords,lyrics,notes>\\\${BLACK}* { // backup rule
232 cerr << _ ("white expected") << endl;
235 <INITIAL,chords,lyrics,notes>\${BLACK}* { // backup rule
236 cerr << _ ("white expected") << endl;
240 <INITIAL,chords,lyrics,notes># { //embedded scm
241 //char const* s = YYText () + 1;
242 char const* s = here_ch_C ();
244 if (main_input_b_ && safe_global_b) {
245 error (_ ("Can't evaluate Scheme in safe mode"));
246 yylval.scm = SCM_EOL;
249 yylval.scm = ly_parse_scm (s, &n);
251 for (int i=0; i < n; i++)
255 char_count_stack_.top () += n;
261 return scan_bare_word (YYText ());
265 return scan_escaped_word (YYText () + 1);
269 yylval.i = String_convert::dec2_i (String (YYText ()));
273 yylval.i = String_convert::dec2_i (String (YYText ()));
287 *yylval.string += to_str (escaped_char (YYText ()[1]));
290 *yylval.string += YYText ();
293 DEBUG_OUT << "quoted string: `" << *yylval.string << "'\n";
296 /* yylval is union. Must remember STRING before setting SCM*/
297 String *sp = yylval.string;
298 yylval.scm = ly_str02scm (sp->ch_C ());
303 *yylval.string += YYText ();
312 yylval.i = String_convert::dec2_i (String (YYText ()));
316 return scan_escaped_word (YYText () + 1);
320 String s (YYText ());
322 return yylval.i = EXTENDER;
324 return yylval.i = HYPHEN;
327 char c = s[s.length_i () - 1];
328 if (c == '{' || c == '}') // brace open is for not confusing dumb tools.
329 here_input ().warning (
330 _ ("Brace found at end of lyric. Did you forget a space?"));
331 yylval.scm = ly_str02scm (s.ch_C ());
333 DEBUG_OUT << "lyric : `" << s << "'\n";
342 return scan_bare_word (YYText ());
345 return scan_escaped_word (YYText () + 1);
348 yylval.i = String_convert::dec2_i (String (YYText ()));
372 DEBUG_OUT << "<<eof>>";
374 if (! close_input ()) {
375 yyterminate (); // can't move this, since it actually rets a YY_NULL
381 return scan_bare_word (YYText ());
384 return scan_escaped_word (YYText () + 1);
388 int cnv=sscanf (YYText (), "%lf", &r);
390 DEBUG_OUT << "REAL" << r<<'\n';
396 yylval.i = String_convert::dec2_i (String (YYText ()));
401 DEBUG_OUT << "parens\n";
405 char c = YYText ()[0];
406 DEBUG_OUT << "misc char" <<c<<"\n";
414 <INITIAL,lyrics,notes>\\. {
415 char c= YYText ()[1];
423 return E_EXCLAMATION;
434 String msg = _f ("invalid character: `%c'", YYText ()[0]);
435 LexerError (msg.ch_C ());
442 My_lily_lexer::push_note_state ()
444 yy_push_state (notes);
448 My_lily_lexer::push_chord_state ()
450 yy_push_state (chords);
454 My_lily_lexer::push_lyric_state ()
456 yy_push_state (lyrics);
460 My_lily_lexer::pop_state ()
466 My_lily_lexer::scan_escaped_word (String str)
468 // use more SCM for this.
470 SCM sym = ly_symbol2scm (str.ch_C ());
472 int l = lookup_keyword (str);
476 SCM sid = lookup_identifier (str);
477 if (gh_string_p (sid)) {
479 return STRING_IDENTIFIER;
480 } else if (gh_number_p (sid)) {
482 return NUMBER_IDENTIFIER;
483 } else if (unsmob_translator_def (sid)) {
485 return TRANSLATOR_IDENTIFIER;
486 } else if (unsmob_score (sid)) {
488 return SCORE_IDENTIFIER;
489 } else if (Music * mus =unsmob_music (sid)) {
492 return dynamic_cast<Request*> (mus) ? REQUEST_IDENTIFIER : MUSIC_IDENTIFIER;
493 } else if (unsmob_duration (sid)) {
495 return DURATION_IDENTIFIER;
496 } else if (unsmob_music_output_def (sid)) {
498 return MUSIC_OUTPUT_DEF_IDENTIFIER;
501 if (sid != SCM_UNDEFINED) {
503 return SCM_IDENTIFIER;
506 if ((YYSTATE != notes) && (YYSTATE != chords)) {
507 SCM pitch = scm_hashq_get_handle (pitchname_tab_, sym);
509 if (gh_pair_p (pitch))
511 yylval.scm = gh_cdr (pitch);
512 return NOTENAME_PITCH;
515 String msg (_f ("unknown escaped string: `\\%s'", str));
516 LexerError (msg.ch_C ());
518 yylval.scm = ly_str02scm (str.ch_C ());
524 My_lily_lexer::scan_bare_word (String str)
526 SCM sym = ly_symbol2scm (str.ch_C ());
527 if ((YYSTATE == notes) || (YYSTATE == chords)) {
528 SCM pitch = scm_hashq_get_handle (pitchname_tab_, sym);
529 if (gh_pair_p (pitch)) {
530 yylval.scm = gh_cdr (pitch);
531 return (YYSTATE == notes) ? NOTENAME_PITCH : TONICNAME_PITCH;
532 } else if ((pitch = scm_hashq_get_handle (chordmodifier_tab_, sym))!= SCM_BOOL_F)
534 yylval.scm = gh_cdr (pitch);
535 return CHORDMODIFIER_PITCH;
539 yylval.scm = ly_str02scm (str.ch_C ());
544 My_lily_lexer::note_state_b () const
546 return YY_START == notes;
550 My_lily_lexer::chord_state_b () const
552 return YY_START == chords;
556 My_lily_lexer::lyric_state_b () const
558 return YY_START == lyrics;
562 urg, belong to String (_convert)
563 and should be generalised
566 strip_leading_white (String&s)
569 for (; i < s.length_i (); i++)
573 s = s.nomid_str (0, i);
577 strip_trailing_white (String&s)
584 s = s.left_str (i+1);
591 valid_version_b (String s)
593 Lilypond_version current ( MAJOR_VERSION "." MINOR_VERSION "." PATCH_LEVEL );
594 Lilypond_version ver (s);
595 if (! ((ver >= oldest_version) && (ver <= current)))
597 non_fatal_error (_f ("incorrect lilypond version: %s (%s, %s)", ver.str (), oldest_version.str (), current.str ()));
598 non_fatal_error (_ ("Consider converting the input with the convert-ly script"));
606 lyric_fudge (String s)
608 char * chars =s.copy_ch_p ();
610 for (char * p = chars; *p ; p++)
612 if (*p == '_' && (p == chars || *(p-1) != '\\'))
620 if ((i=s.index_i ("\\,")) != -1) // change "\," to TeX's "\c "
622 * (s.ch_l () + i + 1) = 'c';
623 s = s.left_str (i+2) + " " + s.right_str (s.length_i ()-i-2);