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 :-)
28 #include "lily-guile.hh"
30 #include "string-convert.hh"
31 #include "my-lily-lexer.hh"
33 #include "interval.hh"
34 #include "lily-guile.hh"
38 #include "musical-request.hh"
39 #include "identifier.hh"
41 #include "mudela-version.hh"
42 #include "translator-def.hh"
44 void strip_trailing_white (String&);
45 void strip_leading_white (String&);
49 valid_version_b (String s);
53 #define start_quote() \
54 yy_push_state (quote);\
55 yylval.string = new String
57 #define yylval (*(YYSTYPE*)lexval_l)
59 #define YY_USER_ACTION add_lexed_char (YYLeng ());
62 LYRICS ({AA}|{TEX})[^0-9 \t\n\f]*
72 %option yyclass="My_lily_lexer"
74 %option never-interactive
92 NATIONAL [\001-\006\021-\027\031\036\200-\377]
93 TEX {AA}|-|{PUNCT}|{ACCENT}|{NATIONAL}
99 REAL ({INT}\.{N}*)|(-?\.{N}+)
102 HORIZONTALWHITE [ \t]
106 LYRICS ({AA}|{TEX})[^0-9 \t\n\f]*
114 // windows-suck-suck-suck
117 <INITIAL,chords,incl,lyrics,notes>{
119 yy_push_state (longcomment);
123 %[^{\n] { // backup rule
134 <INITIAL,chords,lyrics,notes>\\version{WHITE}* {
135 yy_push_state (version);
137 <version>\"[^"]*\";? { /* got the include file name */
138 String s (YYText ()+1);
139 s = s.left_str (s.index_last_i ('"'));
140 DEBUG_OUT << "#version `" << s << "'\n";
142 if (!valid_version_b (s))
146 LexerError ("No quoted string found after \\version");
159 LexerError (_ ("EOF found inside a comment").ch_C ());
160 if (! close_input ())
161 yyterminate (); // can't move this, since it actually rets a YY_NULL
166 <INITIAL,chords,lyrics,notes>\\maininput {
170 main_input_b_ = true;
173 error (_ ("\\maininput disallowed outside init files"));
176 <INITIAL,chords,lyrics,notes>\\include {
177 yy_push_state (incl);
179 <incl>\"[^"]*\";? { /* got the include file name */
180 String s (YYText ()+1);
181 s = s.left_str (s.index_last_i ('"'));
182 DEBUG_OUT << "#include `" << s << "'\n";
183 new_input (s,source_global_l);
186 <incl>\\{BLACK}*;?{WHITE} { /* got the include identifier */
187 String s = YYText () + 1;
188 strip_trailing_white (s);
189 if (s.length_i () && (s[s.length_i () - 1] == ';'))
190 s = s.left_str (s.length_i () - 1);
191 DEBUG_OUT << "#include `\\" << s << "'\n";
192 SCM sid = lookup_identifier (s);
193 if (gh_string_p (sid)) {
194 new_input (ly_scm2string (sid), source_global_l);
197 String msg (_f ("wrong or undefined identifier: `%s'", s ));
198 LexerError (msg.ch_C ());
201 <incl>\"[^"]* { // backup rule
202 cerr << _ ("Missing end quote") << endl;
205 <chords,notes>{RESTNAME} {
206 const char *s = YYText ();
207 yylval.scm = ly_str02scm (s);
213 <INITIAL,chords,lyrics,notes>\\\${BLACK}*{WHITE} {
214 String s=YYText () + 2;
215 s=s.left_str (s.length_i () - 1);
216 return scan_escaped_word (s);
218 <INITIAL,chords,lyrics,notes>\${BLACK}*{WHITE} {
219 String s=YYText () + 1;
220 s=s.left_str (s.length_i () - 1);
221 return scan_bare_word (s);
223 <INITIAL,chords,lyrics,notes>\\\${BLACK}* { // backup rule
224 cerr << _ ("white expected") << endl;
227 <INITIAL,chords,lyrics,notes>\${BLACK}* { // backup rule
228 cerr << _ ("white expected") << endl;
231 <INITIAL,chords,lyrics,notes># { //embedded scm
232 //char const* s = YYText () + 1;
233 char const* s = here_ch_C ();
235 if (main_input_b_ && safe_global_b) {
236 error (_ ("Can't evaluate Scheme in safe mode"));
237 yylval.scm = SCM_EOL;
240 yylval.scm = ly_parse_scm (s, &n);
241 DEBUG_OUT << "Scheme: ";
243 ly_display_scm (yylval.scm);
245 for (int i=0; i < n; i++)
249 char_count_stack_.top () += n;
255 return scan_bare_word (YYText ());
259 return scan_escaped_word (YYText () + 1);
263 yylval.i = String_convert::dec2_i (String (YYText ()));
267 yylval.i = String_convert::dec2_i (String (YYText ()));
281 *yylval.string += to_str (escaped_char(YYText()[1]));
284 *yylval.string += YYText ();
287 DEBUG_OUT << "quoted string: `" << *yylval.string << "'\n";
290 /* yylval is union. Must remember STRING before setting SCM*/
291 String *sp = yylval.string;
292 yylval.scm = ly_str02scm (sp->ch_C ());
297 *yylval.string += YYText ();
306 yylval.i = String_convert::dec2_i (String (YYText ()));
310 return scan_escaped_word (YYText () + 1);
314 String s (YYText ());
316 return yylval.i = EXTENDER;
318 return yylval.i = HYPHEN;
320 while ((i=s.index_i ("_")) != -1) // change word binding "_" to " "
321 *(s.ch_l () + i) = ' ';
322 if ((i=s.index_i ("\\,")) != -1) // change "\," to TeX's "\c "
324 *(s.ch_l () + i + 1) = 'c';
325 s = s.left_str (i+2) + " " + s.right_str (s.length_i ()-i-2);
328 char c = s[s.length_i () - 1];
329 if (c == '{' || c == '}') // brace open is for not confusing dumb tools.
330 here_input ().warning (
331 "Brace found at end of lyric. Did you forget a space?");
332 yylval.scm = ly_str02scm (s.ch_C ());
334 DEBUG_OUT << "lyric : `" << s << "'\n";
343 return scan_bare_word (YYText ());
346 return scan_escaped_word (YYText () + 1);
349 yylval.i = String_convert::dec2_i (String (YYText ()));
373 DEBUG_OUT << "<<eof>>";
375 if (! close_input ()) {
376 yyterminate (); // can't move this, since it actually rets a YY_NULL
382 return scan_bare_word (YYText ());
385 return scan_escaped_word (YYText () + 1);
389 int cnv=sscanf (YYText (), "%lf", &r);
391 DEBUG_OUT << "REAL" << r<<'\n';
397 yylval.i = String_convert::dec2_i (String (YYText ()));
403 DEBUG_OUT << "parens\n";
407 char c = YYText ()[0];
408 DEBUG_OUT << "misc char" <<c<<"\n";
416 <INITIAL,lyrics,notes>\\. {
417 char c= YYText ()[1];
425 return E_EXCLAMATION;
432 String msg = _f ("invalid character: `%c'", YYText ()[0]);
433 LexerError (msg.ch_C ());
440 My_lily_lexer::push_note_state ()
442 yy_push_state (notes);
446 My_lily_lexer::push_chord_state ()
448 yy_push_state (chords);
452 My_lily_lexer::push_lyric_state ()
454 yy_push_state (lyrics);
458 My_lily_lexer::pop_state ()
464 My_lily_lexer::scan_escaped_word (String str)
466 // use more SCM for this.
468 SCM sym = ly_symbol2scm (str.ch_C());
470 int l = lookup_keyword (str);
474 SCM sid = lookup_identifier (str);
475 if (gh_string_p (sid)) {
477 return STRING_IDENTIFIER;
478 } else if (gh_number_p (sid)) {
480 return NUMBER_IDENTIFIER;
481 } else if (Translator_def* tr = unsmob_translator_def (sid)) {
483 return TRANSLATOR_IDENTIFIER;
484 } else if (Music * mus =unsmob_music (sid)) {
487 return dynamic_cast<Request*> (mus) ? REQUEST_IDENTIFIER : MUSIC_IDENTIFIER;
492 Identifier * id = unsmob_identifier (sid);
495 return id->token_code_i_;
496 } else if (sid != SCM_UNDEFINED) {
498 return SCM_IDENTIFIER;
501 if ((YYSTATE != notes) && (YYSTATE != chords)) {
502 SCM pitch = scm_hashq_ref (pitchname_tab_, sym, SCM_BOOL_F);
504 if (pitch != SCM_BOOL_F)
506 yylval.pitch = new Musical_pitch (pitch);
507 yylval.pitch->set_spot (Input (source_file_l (),
509 return NOTENAME_PITCH;
512 String msg (_f ("unknown escaped string: `\\%s'", str));
513 LexerError (msg.ch_C ());
515 yylval.scm = ly_str02scm(str.ch_C());
521 My_lily_lexer::scan_bare_word (String str)
523 SCM sym = ly_symbol2scm (str.ch_C ());
524 if ((YYSTATE == notes) || (YYSTATE == chords)) {
525 SCM pitch = scm_hashq_ref (pitchname_tab_, sym, SCM_BOOL_F);
526 if (pitch != SCM_BOOL_F) {
527 yylval.pitch = new Musical_pitch (pitch);
528 yylval.pitch->set_spot (Input (source_file_l (),
530 return (YYSTATE == notes) ? NOTENAME_PITCH : TONICNAME_PITCH;
531 } else if ((pitch = scm_hashq_ref (chordmodifier_tab_, sym, SCM_BOOL_F))!= SCM_BOOL_F)
533 yylval.pitch = new Musical_pitch (pitch);
534 yylval.pitch->set_spot (Input (source_file_l (),
536 return CHORDMODIFIER_PITCH;
540 yylval.scm = ly_str02scm (str.ch_C());
545 My_lily_lexer::note_state_b () const
547 return YY_START == notes;
551 My_lily_lexer::chord_state_b () const
553 return YY_START == chords;
557 My_lily_lexer::lyric_state_b () const
559 return YY_START == lyrics;
563 urg, belong to String(_convert)
564 and should be generalised
567 strip_leading_white (String&s)
570 for (; i < s.length_i (); i++)
574 s = s.nomid_str (0, i);
578 strip_trailing_white (String&s)
585 s = s.left_str (i+1);
592 valid_version_b (String s)
594 Mudela_version current ( MAJOR_VERSION "." MINOR_VERSION "." PATCH_LEVEL );
595 Mudela_version ver (s);
596 if (!((ver >= oldest_version) && (ver <= current)))
598 non_fatal_error (_f ("incorrect mudela version: %s (%s, %s)", ver.str (), oldest_version.str (), current.str ()));
599 non_fatal_error (_("Consider converting the input with the convert-mudela script"));