1 %{ // -*-Fundamental-*-
3 lexer.ll -- implement the Flex lexer
5 source file of the LilyPond music typesetter
7 (c) 1996--2004 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 /* Flex >= 2.5.29 fix; FlexLexer.h's multiple include bracing breaks
30 when building the actual lexer. */
36 #include "source-file.hh"
37 #include "parse-scm.hh"
38 #include "lily-guile.hh"
40 #include "string-convert.hh"
41 #include "my-lily-lexer.hh"
42 #include "input-file-results.hh"
43 #include "interval.hh"
44 #include "lily-guile.hh"
49 #include "lilypond-input-version.hh"
50 #include "context-def.hh"
51 #include "identifier-smob.hh"
56 #define isatty HORRIBLEKLUDGE
58 void strip_trailing_white (String&);
59 void strip_leading_white (String&);
60 String lyric_fudge (String s);
63 lookup_markup_command (String s);
66 is_valid_version (String s);
70 #define start_quote() \
71 yy_push_state (quote);\
72 yylval.string = new String
77 #define YY_USER_ACTION add_lexed_char (YYLeng ());
80 LYRICS ({AA}|{TEX})[^0-9 \t\n\f]*
85 SCM scan_fraction (String);
86 SCM (* scm_parse_error_handler) (void *);
96 %option yyclass="My_lily_lexer"
98 %option never-interactive
118 NATIONAL [\001-\006\021-\027\031\036\200-\377]
119 TEX {AA}|-|{PUNCT}|{ACCENT}|{NATIONAL}
127 REAL ({INT}\.{N}*)|(-?\.{N}+)
130 HORIZONTALWHITE [ \t]
134 MARKUPCOMMAND \\({A}|[-_])+
135 LYRICS ({AA}|{TEX})[^0-9 \t\n\r\f]*
143 // windows-suck-suck-suck
146 <INITIAL,chords,incl,markup,lyrics,notes,figures>{
148 yy_push_state (longcomment);
152 %[^{\n\r] { // backup rule
163 <INITIAL,chords,lyrics,notes,figures>\\version{WHITE}* {
164 yy_push_state (version);
166 <INITIAL,chords,lyrics,notes,figures>\\renameinput{WHITE}* {
167 yy_push_state (renameinput);
169 <version>\"[^"]*\" { /* got the version number */
170 String s (YYText ()+1);
171 s = s.left_string (s.index_last ('\"'));
174 if (!is_valid_version (s))
177 <renameinput>\"[^"]*\" { /* got the version number */
178 String s (YYText ()+1);
179 s = s.left_string (s.index_last ('\"'));
182 this->here_input().source_file_->name_ = s;
183 progress_indication (_f("\nRenamed input to `%s'\n", s.to_str0()));
184 scm_module_define (gh_car (scopes_),
185 ly_symbol2scm ("input-file-name"),
186 scm_makfrom0str (s.to_str0()));
191 LexerError ("No quoted string found after \\version");
195 LexerError ("No quoted string found after \\renameinput");
208 LexerError (_ ("EOF found inside a comment").to_str0 ());
209 main_input_b_ = false;
210 if (! close_input ())
211 yyterminate (); // can't move this, since it actually rets a YY_NULL
216 <INITIAL,chords,lyrics,notes,figures>\\maininput {
220 main_input_b_ = true;
223 error (_ ("\\maininput not allowed outside init files"));
226 <INITIAL,chords,lyrics,figures,notes>\\include {
227 yy_push_state (incl);
229 <incl>\"[^"]*\";? { /* got the include file name */
230 String s (YYText ()+1);
231 s = s.left_string (s.index_last ('"'));
233 new_input (s, &global_input_file->sources_);
236 <incl>\\{BLACK}*;?{WHITE} { /* got the include identifier */
237 String s = YYText () + 1;
238 strip_trailing_white (s);
239 if (s.length () && (s[s.length () - 1] == ';'))
240 s = s.left_string (s.length () - 1);
242 SCM sid = lookup_identifier (s);
243 if (gh_string_p (sid)) {
244 new_input (ly_scm2string (sid), &global_input_file->sources_);
247 String msg (_f ("wrong or undefined identifier: `%s'", s ));
249 LexerError (msg.to_str0 ());
250 SCM err = scm_current_error_port ();
251 scm_puts ("This value was found in the table: ", err);
252 scm_display (sid, err);
255 <incl>\"[^"]* { // backup rule
256 error (_ ("Missing end quote"));
259 <chords,notes,figures>{RESTNAME} {
260 const char *s = YYText ();
261 yylval.scm = scm_makfrom0str (s);
264 <chords,notes,figures>R {
265 return MULTI_MEASURE_REST;
267 <INITIAL,markup,chords,lyrics,notes,figures># { //embedded scm
268 //char const* s = YYText () + 1;
269 char const* s = here_str0 ();
271 SCM sval = ly_parse_scm (s, &n, here_input (),
272 safe_global_b && main_input_b_);
274 if (sval == SCM_UNDEFINED)
276 sval = SCM_UNSPECIFIED;
280 for (int i=0; i < n; i++)
284 char_count_stack_.top () += n;
286 if (unpack_identifier (sval) != SCM_UNDEFINED)
288 yylval.scm = unpack_identifier(sval);
289 return identifier_type (yylval.scm);
295 <INITIAL,notes,lyrics>{
317 return scan_bare_word (YYText ());
321 return scan_escaped_word (YYText () + 1);
324 yylval.scm = scan_fraction (YYText ());
329 yylval.i = String_convert::dec2int (String (YYText ()));
333 yylval.i = String_convert::dec2int (String (YYText ()));
337 yylval.i = String_convert::dec2int (String (YYText () +1));
351 *yylval.string += to_string (escaped_char (YYText ()[1]));
354 *yylval.string += YYText ();
360 /* yylval is union. Must remember STRING before setting SCM*/
361 String *sp = yylval.string;
362 yylval.scm = scm_makfrom0str (sp->to_str0 ());
367 *yylval.string += YYText ();
376 yylval.scm = scan_fraction (YYText ());
380 yylval.i = String_convert::dec2int (String (YYText ()));
384 return scan_escaped_word (YYText () + 1);
388 String s (YYText ());
390 return yylval.i = EXTENDER;
392 return yylval.i = HYPHEN;
395 char c = s[s.length () - 1];
396 if (c == '{' || c == '}') // brace open is for not confusing dumb tools.
397 here_input ().warning (
398 _ ("Brace found at end of lyric. Did you forget a space?"));
399 yylval.scm = scm_makfrom0str (s.to_str0 ());
410 return scan_bare_word (YYText ());
413 return scan_escaped_word (YYText () + 1);
416 yylval.scm = scan_fraction (YYText ());
420 yylval.i = String_convert::dec2int (String (YYText ()));
458 String str (YYText() + 1);
459 SCM s = lookup_markup_command (str);
461 if (gh_pair_p (s) && gh_symbol_p (gh_cdr (s)) ) {
462 yylval.scm = gh_car(s);
464 if (tag == ly_symbol2scm("markup0"))
465 return MARKUP_HEAD_MARKUP0;
466 if (tag == ly_symbol2scm("empty"))
467 return MARKUP_HEAD_EMPTY;
468 else if (tag == ly_symbol2scm ("markup0-markup1"))
469 return MARKUP_HEAD_MARKUP0_MARKUP1;
470 else if (tag == ly_symbol2scm ("markup-list0"))
471 return MARKUP_HEAD_LIST0;
472 else if (tag == ly_symbol2scm ("scheme0"))
473 return MARKUP_HEAD_SCM0;
474 else if (tag == ly_symbol2scm ("scheme0-scheme1"))
475 return MARKUP_HEAD_SCM0_SCM1;
476 else if (tag == ly_symbol2scm ("scheme0-markup1"))
477 return MARKUP_HEAD_SCM0_MARKUP1;
478 else if (tag == ly_symbol2scm ("scheme0-scheme1-markup2"))
479 return MARKUP_HEAD_SCM0_SCM1_MARKUP2;
480 else if (tag == ly_symbol2scm ("scheme0-scheme1-scheme2"))
481 return MARKUP_HEAD_SCM0_SCM1_SCM2;
483 programming_error ("No parser tag defined for this signature. Abort");
488 return scan_escaped_word (str);
493 [^#{}"\\ \t\n\r\f]+ {
494 String s (YYText ());
496 char c = s[s.length () - 1];
497 if (c == '{' || c == '}') // brace open is for not confusing dumb tools.
498 here_input ().warning (
499 _ ("Brace found at end of markup. Did you forget a space?"));
500 yylval.scm = scm_makfrom0str (s.to_str0 ());
511 main_input_b_ = false;
512 if (! close_input ()) {
513 yyterminate (); // can't move this, since it actually rets a YY_NULL
519 return scan_bare_word (YYText ());
522 return scan_escaped_word (YYText () + 1);
526 int cnv=sscanf (YYText (), "%lf", &r);
529 yylval.scm = gh_double2scm (r);
534 yylval.i = String_convert::dec2int (String (YYText ()));
544 char c = YYText ()[0];
549 <INITIAL,notes,figures>. {
553 <INITIAL,lyrics,notes,figures>\\. {
554 char c= YYText ()[1];
562 return E_EXCLAMATION;
570 return E_RIGHTSQUARE;
582 String msg = _f ("invalid character: `%c'", YYText ()[0]);
583 LexerError (msg.to_str0 ());
590 My_lily_lexer::push_note_state (SCM tab)
592 pitchname_tab_stack_ = gh_cons (tab, pitchname_tab_stack_);
593 yy_push_state (notes);
597 My_lily_lexer::push_figuredbass_state()
599 yy_push_state (figures);
602 My_lily_lexer::push_chord_state (SCM tab)
604 pitchname_tab_stack_ = gh_cons (tab, pitchname_tab_stack_);
605 yy_push_state (chords);
609 My_lily_lexer::push_lyric_state ()
611 yy_push_state (lyrics);
615 My_lily_lexer::push_markup_state ()
617 yy_push_state (markup);
621 My_lily_lexer::pop_state ()
623 if (YYSTATE == notes || YYSTATE == chords)
624 pitchname_tab_stack_ = gh_cdr (pitchname_tab_stack_);
629 My_lily_lexer::identifier_type (SCM sid)
631 int k = try_special_identifiers (&yylval.scm , sid);
632 return k >= 0 ? k : SCM_IDENTIFIER;
637 My_lily_lexer::scan_escaped_word (String str)
639 // use more SCM for this.
641 // SCM sym = ly_symbol2scm (str.to_str0 ());
643 int l = lookup_keyword (str);
647 SCM sid = lookup_identifier (str);
648 if (sid != SCM_UNDEFINED)
651 return identifier_type (sid);
654 String msg (_f ("unknown escaped string: `\\%s'", str));
655 LexerError (msg.to_str0 ());
657 yylval.scm = scm_makfrom0str (str.to_str0 ());
663 My_lily_lexer::scan_bare_word (String str)
665 SCM sym = ly_symbol2scm (str.to_str0 ());
666 if ((YYSTATE == notes) || (YYSTATE == chords)) {
667 SCM handle = SCM_BOOL_F;
668 if (gh_pair_p (pitchname_tab_stack_))
669 handle = scm_hashq_get_handle (gh_car (pitchname_tab_stack_), sym);
671 if (gh_pair_p (handle)) {
672 yylval.scm = ly_cdr (handle);
673 if (unsmob_pitch (yylval.scm))
674 return (YYSTATE == notes) ? NOTENAME_PITCH : TONICNAME_PITCH;
675 else if (gh_symbol_p (yylval.scm))
678 else if ((handle = scm_hashq_get_handle (chordmodifier_tab_, sym))!= SCM_BOOL_F)
680 yylval.scm = ly_cdr (handle);
681 return CHORD_MODIFIER;
685 yylval.scm = scm_makfrom0str (str.to_str0 ());
690 My_lily_lexer::is_note_state () const
692 return YY_START == notes;
696 My_lily_lexer::is_chord_state () const
698 return YY_START == chords;
702 My_lily_lexer::is_lyric_state () const
704 return YY_START == lyrics;
708 My_lily_lexer::is_figure_state () const
710 return YY_START == figures;
714 urg, belong to String (_convert)
715 and should be generalised
718 strip_leading_white (String&s)
721 for (; i < s.length (); i++)
725 s = s.nomid_string (0, i);
729 strip_trailing_white (String&s)
736 s = s.left_string (i+1);
741 /* 1.9.0 == postfix articulations */
742 Lilypond_version oldest_version ("1.9.0");
746 is_valid_version (String s)
748 Lilypond_version current ( MAJOR_VERSION "." MINOR_VERSION "." PATCH_LEVEL );
749 Lilypond_version ver (s);
750 if (! ((ver >= oldest_version) && (ver <= current)))
752 non_fatal_error (_f ("Incorrect lilypond version: %s (%s, %s)", ver.to_string (), oldest_version.to_string (), current.to_string ()));
753 non_fatal_error (_ ("Consider updating the input with the convert-ly script"));
764 lyric_fudge (String s)
766 char * chars =s.get_copy_str0 ();
768 for (char * p = chars; *p ; p++)
770 if (*p == '_' && (p == chars || *(p-1) != '\\'))
778 if ((i=s.index ("\\,")) != -1) // change "\," to TeX's "\c "
780 * (s.get_str0 () + i + 1) = 'c';
781 s = s.left_string (i+2) + " " + s.right_string (s.length ()-i-2);
788 Convert "NUM/DEN" into a '(NUM . DEN) cons.
791 scan_fraction (String frac)
793 int i = frac.index ('/');
794 int l = frac.length ();
795 String left = frac.left_string (i);
796 String right = frac.right_string (l - i - 1);
798 int n = String_convert::dec2int (left);
799 int d = String_convert::dec2int (right);
800 return gh_cons (gh_int2scm (n), gh_int2scm (d));
803 // Breaks for flex 2.5.31
805 /* avoid silly flex induced gcc warnings */
806 static void yy_push_state (int) {;}
807 static void yy_pop_state () {;}
808 static int yy_top_state () { return 0; }
811 avoid_silly_flex_induced_gcc_warnings ()
813 (void)yy_start_stack_ptr;
814 (void)yy_start_stack_depth;
815 (void)yy_start_stack;
819 avoid_silly_flex_induced_gcc_warnings ();
824 lookup_markup_command (String s)
826 SCM proc = ly_scheme_function ("lookup-markup-command");
828 return scm_call_1 (proc, scm_makfrom0str (s.to_str0 ()));