lily/parser.yy

   1 %{ // -*-Fundamental-*-
   2
   3 /*
   4   parser.yy -- Bison/C++ parser for LilyPond
   5
   6   source file of the GNU LilyPond music typesetter
   7
   8   (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   9                  Jan Nieuwenhuizen <janneke@gnu.org>
  10 */
  11
  12 /*
  13
  14 TODO:
  15
  16 * The rules for who is protecting what are very shady. Uniformise
  17   this.
  18
  19 * There are too many lexical modes?
  20
  21 */
  22
  23 #include <ctype.h>
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26
  27
  28 #include "book.hh"
  29 #include "context-def.hh"
  30 #include "dimensions.hh"
  31 #include "event.hh"
  32 #include "file-path.hh"
  33 #include "input-smob.hh"
  34 #include "input.hh"
  35 #include "lily-guile.hh"
  36 #include "lilypond-input-version.hh"
  37 #include "main.hh"
  38 #include "misc.hh"
  39 #include "lily-lexer.hh"
  40 #include "lily-parser.hh"
  41 #include "paper-book.hh"
  42 #include "output-def.hh"
  43 #include "scm-hash.hh"
  44 #include "scm-option.hh"
  45 #include "score.hh"
  46 #include "text-item.hh"
  47 #include "warn.hh"
  48
  49 #define MY_MAKE_MUSIC(x)  make_music_by_name (ly_symbol2scm (x))
  50
  51 Music *property_op_to_music (SCM op);
  52 Music *context_spec_music (SCM type, SCM id, Music *m, SCM ops);
  53 SCM get_next_unique_context_id ();
  54 SCM get_next_unique_lyrics_context_id ();
  55
  56 #define YYERROR_VERBOSE 1
  57
  58 #define YYPARSE_PARAM my_lily_parser
  59 #define YYLEX_PARAM my_lily_parser
  60 #define THIS\
  61         ((Lily_parser *) my_lily_parser)
  62
  63 #define yyerror THIS->parser_error
  64
  65 /* We use custom location type: Input objects */
  66 #define YYLTYPE Input
  67 #define YYLLOC_DEFAULT(Current,Rhs,N) \
  68         ((Current).set_location ((Rhs)[1], (Rhs)[N]))
  69
  70
  71 /* Add symbols to the TAGS field of a music object.  */
  72
  73 void
  74 tag_music (Music *m, SCM tag, Input ip)
  75 {
  76         SCM tags = m->get_property ("tags");
  77         if (scm_is_symbol (tag))
  78                 tags = scm_cons (tag, tags);
  79         else if (ly_c_list_p (tag))
  80                 tags = ly_append2 (tag, tags);
  81         else
  82                 ip.warning (_ ("Tag must be symbol or list of symbols."));
  83
  84         m->set_property ("tags", tags);
  85 }
  86
  87 bool
  88 is_regular_identifier (SCM id)
  89 {
  90   String str = ly_scm2string (id);
  91   char const *s = str.to_str0 ();
  92
  93   bool v = true;
  94 #if 0
  95   isalpha (*s);
  96   s++;
  97 #endif
  98   while (*s && v)
  99    {
 100         v = v && isalnum (*s);
 101         s++;
 102    }
 103   return v;
 104 }
 105
 106
 107 SCM
 108 get_first_context_id (SCM type, Music *m)
 109 {
 110         SCM id = m->get_property ("context-id");
 111         if (SCM_BOOL_T == scm_equal_p (m->get_property ("context-type"), type)
 112             && scm_is_string (m->get_property ("context-id"))
 113             && scm_c_string_length (id) > 0)
 114         {
 115                 return id;
 116         }
 117         return SCM_EOL;
 118 }
 119
 120 SCM
 121 make_simple_markup (SCM a)
 122 {
 123         SCM simple = ly_lily_module_constant ("simple-markup");
 124         return scm_list_2 (simple, a);
 125 }
 126
 127 bool
 128 is_duration (int t)
 129 {
 130   return t && t == 1 << intlog2 (t);
 131 }
 132
 133 void
 134 set_music_properties (Music *p, SCM a)
 135 {
 136   for (SCM k = a; scm_is_pair (k); k = scm_cdr (k))
 137         p->internal_set_property (scm_caar (k), scm_cdar (k));
 138 }
 139
 140 SCM
 141 make_chord_step (int step, int alter)
 142 {
 143         if (step == 7)
 144                 alter += FLAT;
 145
 146         while (step < 0)
 147                 step += 7;
 148         Pitch m ((step -1) / 7, (step - 1) % 7, alter);
 149         return m.smobbed_copy ();
 150 }
 151
 152
 153 SCM
 154 make_chord (SCM pitch, SCM dur, SCM modification_list)
 155 {
 156         SCM chord_ctor = ly_lily_module_constant ("construct-chord");
 157         SCM ch = scm_call_3 (chord_ctor, pitch, dur, modification_list);
 158         scm_gc_protect_object (ch);
 159         return ch;
 160 }
 161
 162 /* Todo: actually also use apply iso. call too ...  */
 163 bool
 164 ly_input_procedure_p (SCM x)
 165 {
 166         return ly_c_procedure_p (x)
 167                 || (scm_is_pair (x) && ly_c_procedure_p (scm_car (x)));
 168 }
 169
 170 Music*
 171 set_property_music (SCM sym, SCM value)
 172 {
 173         Music *p = MY_MAKE_MUSIC ("PropertySet");
 174         p->set_property ("symbol", sym);
 175         p->set_property ("value", value);
 176         return p;
 177 }
 178
 179 Music*
 180 make_music_relative (Pitch start, Music *music)
 181 {
 182         Music *relative = MY_MAKE_MUSIC ("RelativeOctaveMusic");
 183         relative->set_property ("element", music->self_scm ());
 184
 185         Pitch last = music->to_relative_octave (start);
 186         if (lily_1_8_relative)
 187                 music->set_property ("last-pitch", last.smobbed_copy ());
 188         return relative;
 189 }
 190
 191 Music*
 192 make_lyric_combine_music (SCM name, Music *music)
 193 {
 194         Music *combine = MY_MAKE_MUSIC ("NewLyricCombineMusic");
 195         combine->set_property ("element", music->self_scm ());
 196         combine->set_property ("associated-context", name);
 197         return combine;
 198 }
 199
 200 %}
 201
 202 /* We use SCMs to do strings, because it saves us the trouble of
 203 deleting them.  Let's hope that a stack overflow doesnt trigger a move
 204 of the parse stack onto the heap. */
 205
 206 %left ADDLYRICS
 207
 208 %union {
 209         Book *book;
 210         Output_def *outputdef;
 211         SCM scm;
 212         String *string;
 213         Music *music;
 214         Score *score;
 215         int i;
 216 }
 217 %{
 218
 219 int
 220 yylex (YYSTYPE *s, YYLTYPE *l, void *v)
 221 {
 222         Lily_parser *pars = (Lily_parser*) v;
 223         Lily_lexer *lex = pars->lexer_;
 224
 225         lex->lexval = (void*) s;
 226         lex->lexloc = l;
 227         lex->prepare_for_next_token ();
 228         return lex->yylex ();
 229 }
 230
 231
 232 %}
 233
 234 %expect 3
 235
 236 /*
 237   Three shift/reduce problems:
 238
 239 2. \markup identifier.
 240
 241   (what? --hwn)
 242
 243 3. \markup { }
 244
 245   (what? --hwn)
 246
 247
 248 4.  \repeat
 249         \repeat .. \alternative
 250
 251
 252     \repeat { \repeat .. \alternative }
 253
 254 or
 255
 256     \repeat { \repeat } \alternative
 257
 258 )
 259  */
 260
 261
 262 %pure_parser
 263 %locations
 264
 265 %token ACCEPTS
 266 %token ADDQUOTE
 267 %token LYRICSTO
 268 %token ALIAS
 269 %token ALTERNATIVE
 270 %token BAR
 271 %token BOOK
 272 %token CHANGE
 273 %token CHORDMODIFIERS
 274 %token CHORDS
 275 %token CHORDMODE
 276 %token DOUBLE_ANGLE_OPEN
 277 %token DOUBLE_ANGLE_CLOSE
 278 %token CLEF
 279 %token COMMANDSPANREQUEST
 280 %token CONSISTS
 281 %token CONTEXT
 282 %token DEFAULT
 283 %token DENIES
 284 %token DESCRIPTION
 285 %token EXTENDER
 286 %token FIGURES
 287 %token FIGUREMODE
 288 %token FIGURE_OPEN FIGURE_CLOSE
 289 %token FIGURE_BRACKET_CLOSE FIGURE_BRACKET_OPEN
 290 %token GROBDESCRIPTIONS
 291 %token HEADER
 292 %token HYPHEN
 293 %token INVALID
 294 %token KEY
 295 %token LAYOUT
 296 %token LYRICS
 297 %token LYRICMODE
 298 %token MARK
 299 %token MIDI
 300 %token MULTI_MEASURE_REST
 301 %token NAME
 302 %token NEWCONTEXT
 303 %token NOTEMODE
 304 %token OBJECTID
 305 %token OCTAVE
 306 %token ONCE
 307 %token OVERRIDE SET REVERT
 308 %token PAPER
 309 %token PARTIAL
 310 %token QUOTE
 311 %token RELATIVE
 312 %token REMOVE
 313 %token REPEAT
 314 %token REST
 315 %token SCM_T
 316 %token SCORE
 317 %token SEQUENTIAL
 318 %token ADDLYRICS
 319 %token SIMULTANEOUS
 320 %token SKIP
 321 %token SPANREQUEST
 322 %token TAG
 323 %token TEMPO
 324 %token TIMES
 325 %token TIME_T
 326 %token TRANSPOSE
 327 %token TRANSPOSITION
 328 %token TYPE
 329 %token UNSET
 330 %token WITH
 331 %token MARKUP
 332
 333 /* escaped */
 334 /* FIXME: this sucks.  The user will get to see these names:
 335     syntax error, unexpected E_CHAR:
 336                 \
 337                  %%
 338   */
 339
 340 %token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER E_OPEN E_CLOSE
 341 %token E_LEFTSQUARE E_RIGHTSQUARE E_TILDE
 342 %token E_BACKSLASH
 343 %token CHORD_BASS CHORD_COLON CHORD_MINUS CHORD_CARET  CHORD_SLASH
 344 %token FIGURE_SPACE
 345
 346 %token <i>      DIGIT
 347 %token <i>      UNSIGNED
 348 %token <i> E_UNSIGNED
 349 %token <id>     IDENTIFIER
 350 %token <scm>    CHORDMODIFIER_PITCH
 351 %token <scm>    DRUM_PITCH
 352 %token <scm>    DURATION_IDENTIFIER
 353 %token <scm>    EVENT_IDENTIFIER
 354 %token <scm>    MUSIC_IDENTIFIER CONTEXT_DEF_IDENTIFIER
 355 %token <scm>    NOTENAME_PITCH
 356 %token <scm>    NUMBER_IDENTIFIER
 357 %token <scm>    OUTPUT_DEF_IDENTIFIER
 358 %token <scm>    RESTNAME
 359 %token <scm> LYRICS_STRING
 360 %token <scm>    SCM_T
 361 %token <scm>    SCORE_IDENTIFIER
 362 %token <scm>    STRING
 363 %token <scm>    STRING_IDENTIFIER SCM_IDENTIFIER
 364 %token <scm>    TONICNAME_PITCH
 365 %token <scm>    CHORD_MODIFIER
 366 %token <scm>    FRACTION
 367 %token <scm>   REAL
 368 %token <scm> MARKUP_HEAD_EMPTY
 369 %token <scm> MARKUP_HEAD_MARKUP0
 370 %token <scm> MARKUP_HEAD_MARKUP0_MARKUP1
 371 %token <scm> MARKUP_HEAD_SCM0
 372 %token <scm> MARKUP_HEAD_SCM0_MARKUP1
 373 %token <scm> MARKUP_HEAD_SCM0_SCM1
 374 %token <scm> MARKUP_HEAD_SCM0_SCM1_MARKUP2
 375 %token <scm> MARKUP_HEAD_SCM0_SCM1_SCM2
 376 %token <scm> MARKUP_IDENTIFIER MARKUP_HEAD_LIST0
 377 %token <scm> MUSIC_FUNCTION
 378 %token <scm> MUSIC_FUNCTION_MUSIC
 379 %token <scm> MUSIC_FUNCTION_MUSIC_MUSIC
 380 %token <scm> MUSIC_FUNCTION_SCM
 381 %token <scm> MUSIC_FUNCTION_SCM_SCM
 382 %token <scm> MUSIC_FUNCTION_SCM_MUSIC
 383 %token <scm> MUSIC_FUNCTION_SCM_MUSIC_MUSIC
 384 %token <scm> MUSIC_FUNCTION_SCM_SCM_MUSIC
 385 %token <scm> MUSIC_FUNCTION_MARKUP
 386 %token <scm> MUSIC_FUNCTION_MARKUP_MARKUP
 387 %token <scm> MUSIC_FUNCTION_MARKUP_MUSIC
 388 %token <scm> MUSIC_FUNCTION_MARKUP_MUSIC_MUSIC
 389 %token <scm> MUSIC_FUNCTION_MARKUP_MARKUP_MUSIC
 390
 391 %token DRUMS
 392 %token DRUMMODE
 393
 394
 395 %type <book>    book_block book_body
 396 %type <i>       bare_int  bare_unsigned
 397 %type <i>       exclamations questions dots optional_rest
 398 %type <i>       script_dir
 399 %type <i>       sub_quotes sup_quotes
 400 %type <i>       tremolo_type
 401 %type <i>       bass_mod
 402
 403 %type <music>   Composite_music Simple_music Prefix_composite_music Generic_prefix_music
 404 %type <music>   Grouped_music_list
 405 %type <music>   Music Sequential_music Simultaneous_music
 406 %type <music>   Repeated_music
 407 %type <music>   command_req
 408 %type <music>   gen_text_def direction_less_event direction_reqd_event
 409 %type <music>   music_property_def context_change
 410 %type <music>   note_chord_element chord_body chord_body_element
 411 %type <music>   post_event tagged_post_event
 412 %type <music>   relative_music re_rhythmed_music
 413 %type <music>   simple_element event_chord command_element
 414 %type <music>   string_number_event
 415 %type <music>   toplevel_music
 416 %type <music>   tempo_event
 417
 418 %type <outputdef>       output_def_body output_def_head
 419 %type <outputdef> output_def paper_block
 420
 421 %type <scm>     Music_list
 422 %type <scm>     chord_body_elements
 423 %type <scm>     chord_item chord_items chord_separator new_chord
 424 %type <scm>     context_def_spec_block context_def_spec_body
 425 %type <scm>     context_mod context_def_mod optional_context_mod
 426 %type <scm>     context_prop_spec
 427 %type <scm>     direction_less_char
 428 %type <scm>     duration_length fraction
 429 %type <scm>     embedded_scm scalar
 430 %type <scm>     identifier_init
 431 %type <scm>     lilypond_header lilypond_header_body
 432 %type <scm>     new_lyrics
 433 %type <scm>     post_events
 434 %type <scm>     property_operation
 435 %type <scm>     script_abbreviation
 436 %type <scm>     simple_string
 437 %type <scm>     steno_pitch pitch absolute_pitch pitch_also_in_chords
 438 %type <scm>     steno_tonic_pitch
 439 %type <scm>     step_number step_numbers
 440 %type <scm>     string bare_number number_expression number_term number_factor
 441 %type <scm>     bass_number br_bass_figure bass_figure figure_list figure_spec
 442 %type <scm>     context_mod_list
 443 %type <scm>     octave_check
 444 %type <scm>     steno_duration optional_notemode_duration multiplied_duration
 445 %type <scm>     Generic_prefix_music_scm
 446 %type <scm>     lyric_element
 447 %type <scm>     Alternative_music
 448 %type <scm>     full_markup markup_list markup_composed_list markup_braced_list markup_braced_list_body
 449 %type <scm>     markup_head_1_item markup_head_1_list markup simple_markup markup_top
 450 %type <scm>     mode_changing_head
 451 %type <scm>     mode_changing_head_with_context
 452 %type <scm>     object_id_setting
 453
 454 %type <score>   score_block score_body
 455
 456
 457 %left '-' '+'
 458
 459 /* We don't assign precedence to / and *, because we might need varied
 460 prec levels in different prods */
 461
 462 %left UNARY_MINUS
 463
 464 %%
 465
 466 lilypond:       /* empty */
 467         | lilypond toplevel_expression {
 468         }
 469         | lilypond assignment {
 470         }
 471         | lilypond error {
 472                 THIS->error_level_ = 1;
 473         }
 474         | lilypond INVALID      {
 475                 THIS->error_level_ = 1;
 476         }
 477         ;
 478
 479
 480 object_id_setting:
 481         OBJECTID STRING { $$ = $2; }
 482         ;
 483
 484 toplevel_expression:
 485         lilypond_header {
 486                 THIS->lexer_->set_identifier (ly_symbol2scm ("$globalheader"), $1);
 487         }
 488         | add_quote {
 489
 490         }
 491         | book_block {
 492                 Book *book = $1;
 493                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-book-handler");
 494                 scm_call_2 (proc, THIS->self_scm (), book->self_scm ());
 495                 scm_gc_unprotect_object (book->self_scm ());
 496         }
 497         | score_block {
 498                 Score *score = $1;
 499
 500                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-score-handler");
 501                 scm_call_2 (proc, THIS->self_scm (), score->self_scm ());
 502                 scm_gc_unprotect_object (score->self_scm ());
 503         }
 504         | toplevel_music {
 505                 Music *music = $1;
 506                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-music-handler");
 507                 scm_call_2 (proc, THIS->self_scm (), music->self_scm ());
 508                 scm_gc_unprotect_object (music->self_scm ());
 509         }
 510         | output_def {
 511                 SCM id = SCM_EOL;
 512                 Output_def * od = $1;
 513
 514                 if ($1->c_variable ("is-paper") == SCM_BOOL_T)
 515                         id = ly_symbol2scm ("$defaultpaper");
 516                 else if ($1->c_variable ("is-midi") == SCM_BOOL_T)
 517                         id = ly_symbol2scm ("$defaultmidi");
 518                 else if ($1->c_variable ("is-layout") == SCM_BOOL_T)
 519                         id = ly_symbol2scm ("$defaultlayout");
 520
 521                 THIS->lexer_->set_identifier (id, od->self_scm ());
 522                 scm_gc_unprotect_object (od->self_scm ());
 523         }
 524         ;
 525
 526 toplevel_music:
 527         Composite_music {
 528         }
 529         ;
 530
 531 embedded_scm:
 532         SCM_T
 533         | SCM_IDENTIFIER
 534         ;
 535
 536
 537 lilypond_header_body:
 538         {
 539                 $$ = ly_make_anonymous_module (be_safe_global);
 540                 THIS->lexer_->add_scope ($$);
 541         }
 542         | lilypond_header_body assignment  {
 543
 544         }
 545         ;
 546
 547 lilypond_header:
 548         HEADER '{' lilypond_header_body '}'     {
 549                 $$ = THIS->lexer_->remove_scope ();
 550         }
 551         ;
 552
 553
 554 /*
 555         DECLARATIONS
 556 */
 557 assignment:
 558         STRING '=' identifier_init  {
 559                 if (! is_regular_identifier ($1))
 560                 {
 561                         @1.warning (_ ("Identifier should have alphabetic characters only"));
 562                 }
 563
 564                 THIS->lexer_->set_identifier ($1, $3);
 565
 566 /*
 567  TODO: devise standard for protection in parser.
 568
 569   The parser stack lives on the C-stack, which means that
 570 all objects can be unprotected as soon as they're here.
 571
 572 */
 573         }
 574         | embedded_scm { }
 575         ;
 576
 577
 578 identifier_init:
 579         score_block {
 580                 $$ = $1->self_scm ();
 581                 scm_gc_unprotect_object ($$);
 582         }
 583         | output_def {
 584                 $$ = $1->self_scm ();
 585                 scm_gc_unprotect_object ($$);
 586         }
 587         | context_def_spec_block {
 588                 $$ = $1;
 589         }
 590         | Music  {
 591                 $$ = $1->self_scm ();
 592                 scm_gc_unprotect_object ($$);
 593         }
 594         | post_event {
 595                 $$ = $1->self_scm ();
 596                 scm_gc_unprotect_object ($$);
 597         }
 598         | number_expression {
 599                 $$ = $1;
 600         }
 601         | string {
 602                 $$ = $1;
 603         }
 604         | embedded_scm {
 605                 $$ = $1;
 606         }
 607         | full_markup {
 608                 $$ = $1;
 609         }
 610         | DIGIT {
 611                 $$ = scm_int2num ($1);
 612         }
 613         ;
 614
 615 context_def_spec_block:
 616         CONTEXT '{' context_def_spec_body '}'
 617                 {
 618                 $$ = $3;
 619         }
 620         ;
 621
 622 context_def_spec_body:
 623         /**/ {
 624                 $$ = Context_def::make_scm ();
 625                 unsmob_context_def ($$)->set_spot (@$);
 626         }
 627         | CONTEXT_DEF_IDENTIFIER {
 628                 $$ = $1;
 629                 unsmob_context_def ($$)->set_spot (@$);
 630         }
 631         | context_def_spec_body GROBDESCRIPTIONS embedded_scm {
 632                 Context_def*td = unsmob_context_def ($$);
 633
 634                 for (SCM p = $3; scm_is_pair (p); p = scm_cdr (p)) {
 635                         SCM tag = scm_caar (p);
 636
 637                         /* TODO: should make new tag "grob-definition" ? */
 638                         td->add_context_mod (scm_list_3 (ly_symbol2scm ("assign"),
 639                                                         tag, scm_cons (scm_cdar (p), SCM_EOL)));
 640                 }
 641         }
 642         | context_def_spec_body context_mod {
 643                 unsmob_context_def ($$)->add_context_mod ($2);
 644         }
 645         ;
 646
 647
 648
 649 book_block:
 650         BOOK '{' book_body '}'  {
 651                 $$ = $3;
 652         }
 653         ;
 654
 655 /* FIXME:
 656    * Use 'handlers' like for toplevel-* stuff?
 657    * grok \layout and \midi?  */
 658 book_body:
 659         {
 660                 $$ = new Book;
 661                 $$->set_spot (@$);
 662                 $$->paper_ = dynamic_cast<Output_def*> (unsmob_output_def (THIS->lexer_->lookup_identifier ("$defaultpaper"))->clone ());
 663                 scm_gc_unprotect_object ($$->paper_->self_scm ());
 664                 $$->header_ = THIS->lexer_->lookup_identifier ("$globalheader");
 665         }
 666         | book_body paper_block {
 667                 $$->paper_ = $2;
 668                 scm_gc_unprotect_object ($2->self_scm ());
 669         }
 670         | book_body score_block {
 671                 Score *score = $2;
 672                 $$->add_score (score);
 673         }
 674         | book_body lilypond_header {
 675                 $$->header_ = $2;
 676         }
 677         | book_body error {
 678                 $$->paper_ = 0;
 679                 $$->scores_.clear();
 680         }
 681         | book_body object_id_setting {
 682                 $$->user_key_ = ly_scm2string ($2);
 683         }
 684         ;
 685
 686 score_block:
 687         SCORE '{' score_body '}'        {
 688                 $$ = $3;
 689         }
 690         ;
 691
 692 score_body:
 693         /**/    {
 694                 $$ = new Score;
 695                 $$->set_spot (@$);
 696         }
 697         | SCORE_IDENTIFIER {
 698                 $$ = new Score ( *unsmob_score ($1));
 699                 $$->set_spot (@$);
 700         }
 701         | score_body object_id_setting {
 702                 $$->user_key_ = ly_scm2string ($2);
 703         }
 704         | score_body Music {
 705                 SCM m = $2->self_scm ();
 706                 scm_gc_unprotect_object (m);
 707                 $$->set_music (m, THIS->self_scm ());
 708         }
 709         | score_body lilypond_header    {
 710                 $$->header_ = $2;
 711         }
 712         | score_body output_def {
 713                 if ($2->lookup_variable (ly_symbol2scm ("is-paper")) == SCM_BOOL_T)
 714                 {
 715                         THIS->parser_error (@2, _("\\paper cannot be in \\score. Use \\layout instead"));
 716
 717                 }
 718                 else
 719                 {
 720                         $$->defs_.push ($2);
 721                 }
 722                 scm_gc_unprotect_object ($2->self_scm ());
 723         }
 724         | score_body error {
 725                 $$->error_found_ = true;
 726         }
 727         ;
 728
 729
 730 /*
 731         OUTPUT DEF
 732 */
 733
 734 paper_block:
 735         output_def {
 736                 $$ = $1;
 737                 if ($$->lookup_variable (ly_symbol2scm ("is-paper")) != SCM_BOOL_T)
 738                 {
 739                         THIS->parser_error (@1, _("Need \\paper for paper block."));
 740                         $$ = get_paper (THIS);
 741                 }
 742         }
 743         ;
 744
 745
 746 output_def:
 747         output_def_body '}' {
 748                 $$ = $1;
 749
 750                 THIS->lexer_->remove_scope ();
 751                 THIS->lexer_->pop_state ();
 752         }
 753         ;
 754
 755 output_def_head:
 756         PAPER {
 757                 $$ = get_paper (THIS);
 758                 $$->input_origin_ = @$;
 759                 THIS->lexer_->add_scope ($$->scope_);
 760         }
 761         | MIDI    {
 762                 Output_def *p = get_midi (THIS);
 763                 $$ = p;
 764                 THIS->lexer_->add_scope (p->scope_);
 765         }
 766         | LAYOUT        {
 767                 Output_def *p = get_layout (THIS);
 768
 769                 THIS->lexer_->add_scope (p->scope_);
 770                 $$ = p;
 771         }
 772         ;
 773
 774
 775 output_def_body:
 776         output_def_head '{' {
 777                 $$ = $1;
 778                 $$->input_origin_.set_spot (@$);
 779                 THIS->lexer_->push_initial_state ();
 780         }
 781         | output_def_head '{' OUTPUT_DEF_IDENTIFIER     {
 782                 scm_gc_unprotect_object ($1->self_scm ());
 783                 Output_def *o = unsmob_output_def ($3);
 784                 o->input_origin_.set_spot (@$);
 785                 $$ = o;
 786                 THIS->lexer_->remove_scope ();
 787                 THIS->lexer_->add_scope (o->scope_);
 788                 THIS->lexer_->push_initial_state ();
 789         }
 790         | output_def_body assignment  {
 791
 792         }
 793         | output_def_body context_def_spec_block        {
 794                 assign_context_def ($$, $2);
 795         }
 796         | output_def_body tempo_event  {
 797                 /*
 798                         junk this ? there already is tempo stuff in
 799                         music.
 800                 */
 801                 int m = scm_to_int ($2->get_property ("metronome-count"));
 802                 Duration *d = unsmob_duration ($2->get_property ("tempo-unit"));
 803                 set_tempo ($$, d->get_length (), m);
 804                 scm_gc_unprotect_object ($2->self_scm ());
 805         }
 806         | output_def_body error {
 807
 808         }
 809         ;
 810
 811 tempo_event:
 812         TEMPO steno_duration '=' bare_unsigned  {
 813                 $$ = MY_MAKE_MUSIC ("MetronomeChangeEvent");
 814                 $$->set_property ("tempo-unit", $2);
 815                 $$->set_property ("metronome-count", scm_int2num ( $4));
 816         }
 817         ;
 818
 819 /*
 820 The representation of a  list is the
 821
 822   (LIST . LAST-CONS)
 823
 824  to have efficient append.  */
 825
 826 Music_list:
 827         /* empty */ {
 828                 $$ = scm_cons (SCM_EOL, SCM_EOL);
 829         }
 830         | Music_list Music {
 831                 SCM s = $$;
 832                 SCM c = scm_cons ($2->self_scm (), SCM_EOL);
 833                 scm_gc_unprotect_object ($2->self_scm ()); /* UGH */
 834
 835                 if (scm_is_pair (scm_cdr (s)))
 836                         scm_set_cdr_x (scm_cdr (s), c); /* append */
 837                 else
 838                         scm_set_car_x (s, c); /* set first cons */
 839                 scm_set_cdr_x (s, c);  /* remember last cell */
 840         }
 841         | Music_list embedded_scm {
 842
 843         }
 844         | Music_list error {
 845                 Music * m = MY_MAKE_MUSIC("Music");
 846                 // ugh. code dup
 847                 m->set_property ("error-found", SCM_BOOL_T);
 848                 SCM s = $$;
 849                 SCM c = scm_cons (m->self_scm (), SCM_EOL);
 850                 scm_gc_unprotect_object (m->self_scm ()); /* UGH */
 851
 852                 if (scm_is_pair (scm_cdr (s)))
 853                         scm_set_cdr_x (scm_cdr (s), c); /* append */
 854                 else
 855                         scm_set_car_x (s, c); /* set first cons */
 856                 scm_set_cdr_x (s, c);  /* remember last cell */
 857         }
 858         ;
 859
 860 Music:
 861         Simple_music
 862         | Composite_music
 863         ;
 864
 865 Alternative_music:
 866         /* empty */ {
 867                 $$ = SCM_EOL;
 868         }
 869         | ALTERNATIVE '{' Music_list '}' {
 870                 $$ = $3;
 871         }
 872         ;
 873
 874
 875 Repeated_music:
 876         REPEAT simple_string bare_unsigned Music Alternative_music
 877         {
 878                 Music *beg = $4;
 879                 int times = $3;
 880                 SCM alts = scm_is_pair ($5) ? scm_car ($5) : SCM_EOL;
 881                 if (times < scm_ilength (alts)) {
 882                   unsmob_music (scm_car (alts))
 883                     ->origin ()->warning (
 884                     _ ("More alternatives than repeats.  Junking excess alternatives."));
 885                   alts = ly_truncate_list (times, alts);
 886                 }
 887
 888
 889                 SCM proc = ly_lily_module_constant ("make-repeated-music");
 890
 891                 SCM mus = scm_call_1 (proc, $2);
 892                 scm_gc_protect_object (mus); // UGH.
 893                 Music *r = unsmob_music (mus);
 894                 if (beg)
 895                         {
 896                         r-> set_property ("element", beg->self_scm ());
 897                         scm_gc_unprotect_object (beg->self_scm ());
 898                         }
 899                 r->set_property ("repeat-count", scm_int2num (times >? 1));
 900
 901                 r-> set_property ("elements",alts);
 902                 if (ly_c_equal_p ($2, scm_makfrom0str ("tremolo"))) {
 903                         /*
 904                         TODO: move this code to Scheme.
 905                         */
 906
 907                         /*
 908                         we can not get durations and other stuff correct down the line, so we have to
 909                         add to the duration log here.
 910                         */
 911                         SCM func = ly_lily_module_constant ("shift-duration-log");
 912
 913                         int dots = ($3 % 3) ? 0 : 1;
 914                         int shift = -intlog2 ((dots) ? ($3*2/3) : $3);
 915
 916
 917                         if ($4->is_mus_type ("sequential-music"))
 918                         {
 919                                 int list_len = scm_ilength ($4->get_property ("elements"));
 920                                 if (list_len != 2)
 921                                         $4->origin ()->warning ("Chord tremolo must have 2 elements.");
 922                                 shift -= 1;
 923                                 r->compress (Moment (Rational (1, list_len)));
 924                         }
 925                         scm_call_3 (func, r->self_scm (), scm_int2num (shift), scm_int2num (dots));
 926
 927                 }
 928                 r->set_spot (*$4->origin ());
 929
 930                 $$ = r;
 931         }
 932         ;
 933
 934 Sequential_music:
 935         SEQUENTIAL '{' Music_list '}'           {
 936                 $$ = MY_MAKE_MUSIC ("SequentialMusic");
 937                 $$->set_property ("elements", scm_car ($3));
 938                 $$->set_spot (@$);
 939         }
 940         | '{' Music_list '}'            {
 941                 $$ = MY_MAKE_MUSIC ("SequentialMusic");
 942                 $$->set_property ("elements", scm_car ($2));
 943                 $$->set_spot (@$);
 944         }
 945         ;
 946
 947 Simultaneous_music:
 948         SIMULTANEOUS '{' Music_list '}'{
 949                 $$ = MY_MAKE_MUSIC ("SimultaneousMusic");
 950                 $$->set_property ("elements", scm_car ($3));
 951                 $$->set_spot (@$);
 952
 953         }
 954         | simul_open Music_list simul_close     {
 955                 $$ = MY_MAKE_MUSIC ("SimultaneousMusic");
 956                 $$->set_property ("elements", scm_car ($2));
 957                 $$->set_spot (@$);
 958         }
 959         ;
 960
 961 Simple_music:
 962         event_chord             { $$ = $1; }
 963         | MUSIC_IDENTIFIER {
 964                 $$ = unsmob_music ($1);
 965         }
 966         | music_property_def
 967         | context_change
 968         ;
 969
 970
 971 optional_context_mod:
 972         /**/ { $$ = SCM_EOL; }
 973         | WITH { THIS->lexer_->push_initial_state (); }
 974         '{' context_mod_list '}'
 975         {
 976                 THIS->lexer_->pop_state ();
 977                 $$ = $4;
 978         }
 979         ;
 980
 981 context_mod_list:
 982         /* */  { $$ = SCM_EOL; }
 983         | context_mod_list context_mod  {
 984                  $$ = scm_cons ($2, $1);
 985         }
 986         ;
 987
 988
 989 Composite_music:
 990         Prefix_composite_music { $$ = $1; }
 991         | Grouped_music_list { $$ = $1; }
 992         ;
 993
 994 Grouped_music_list:
 995         Simultaneous_music              { $$ = $1; }
 996         | Sequential_music              { $$ = $1; }
 997         ;
 998
 999 Generic_prefix_music_scm:
1000         MUSIC_FUNCTION {
1001                 $$ = scm_list_2 ($1, make_input (@$));
1002         }
1003         | MUSIC_FUNCTION_SCM embedded_scm {
1004                 $$ = scm_list_3 ($1, make_input (@$), $2);
1005         }
1006         | MUSIC_FUNCTION_MARKUP full_markup {
1007                 $$ = scm_list_3 ($1, make_input (@$), $2);
1008         }
1009         | MUSIC_FUNCTION_MUSIC Music {
1010                 $$ = scm_list_3 ($1, make_input (@$), $2->self_scm ());
1011                 scm_gc_unprotect_object ($2->self_scm ());
1012         }
1013         | MUSIC_FUNCTION_SCM_MUSIC embedded_scm Music {
1014                 $$ = scm_list_4 ($1, make_input (@$), $2, $3->self_scm ());
1015                 scm_gc_unprotect_object ($3->self_scm ());
1016         }
1017         | MUSIC_FUNCTION_SCM_SCM embedded_scm embedded_scm {
1018                 $$ = scm_list_4 ($1, make_input (@$), $2, $3);
1019         }
1020         | MUSIC_FUNCTION_SCM_SCM_MUSIC embedded_scm embedded_scm Music {
1021                 $$ = scm_list_5 ($1, make_input (@$), $2, $3, $4->self_scm ());
1022         }
1023         | MUSIC_FUNCTION_MARKUP_MUSIC full_markup Music {
1024                 $$ = scm_list_4 ($1, make_input (@$), $2, $3->self_scm ());
1025                 scm_gc_unprotect_object ($3->self_scm ());
1026         }
1027         | MUSIC_FUNCTION_MARKUP_MARKUP full_markup full_markup {
1028                 $$ = scm_list_4 ($1, make_input (@$), $2, $3);
1029         }
1030         | MUSIC_FUNCTION_MUSIC_MUSIC Music Music {
1031                 $$ = scm_list_4 ($1, make_input (@$), $2->self_scm (), $3->self_scm ());
1032                 scm_gc_unprotect_object ($2->self_scm ());
1033                 scm_gc_unprotect_object ($3->self_scm ());
1034         }
1035         | MUSIC_FUNCTION_SCM_MUSIC_MUSIC embedded_scm Music Music {
1036                 $$ = scm_list_5 ($1, make_input (@$), $2, $3->self_scm (), $4->self_scm ());
1037                 scm_gc_unprotect_object ($4->self_scm ());
1038                 scm_gc_unprotect_object ($3->self_scm ());
1039         }
1040         | MUSIC_FUNCTION_MARKUP_MUSIC_MUSIC full_markup Music Music {
1041                 $$ = scm_list_5 ($1, make_input (@$), $2, $3->self_scm (), $4->self_scm ());
1042                 scm_gc_unprotect_object ($3->self_scm ());
1043                 scm_gc_unprotect_object ($4->self_scm ());
1044         }
1045         ;
1046
1047 Generic_prefix_music:
1048         Generic_prefix_music_scm {
1049                 SCM func = scm_car ($1);
1050                 Input *loc = unsmob_input (scm_cadr ($1));
1051                 SCM args = scm_cddr ($1);
1052                 SCM sig = scm_object_property (func, ly_symbol2scm ("music-function-signature"));
1053
1054                 SCM type_check_proc = ly_lily_module_constant ("type-check-list");
1055                 bool ok  = true;
1056
1057                 if (!to_boolean (scm_call_3  (type_check_proc, scm_cadr ($1), sig, args)))
1058                 {
1059                         THIS->error_level_ = 1;
1060                         ok = false;
1061                 }
1062
1063                 SCM m = SCM_EOL;
1064                 if (ok)
1065                         m = scm_apply_0 (func, scm_cons (THIS->self_scm(),
1066                                                          scm_cdr ($1)));
1067
1068                 if (unsmob_music (m))
1069                         {
1070                         $$ = unsmob_music (m);
1071                         scm_gc_protect_object (m);
1072                         }
1073                 else
1074                         {
1075                         if (ok)
1076                                 loc->error (_ ("Music head function should return Music object."));
1077                         $$ = MY_MAKE_MUSIC ("Music");
1078                         }
1079                 $$->set_spot (*loc);
1080         }
1081         ;
1082
1083
1084 Prefix_composite_music:
1085         Generic_prefix_music {
1086                 $$ = $1;
1087         }
1088         | CONTEXT simple_string '=' simple_string optional_context_mod Music {
1089                 $$ = context_spec_music ($2, $4, $6, $5);
1090
1091         }
1092         | CONTEXT simple_string optional_context_mod Music {
1093                 $$ = context_spec_music ($2, SCM_UNDEFINED, $4, $3);
1094         }
1095         | NEWCONTEXT simple_string optional_context_mod Music {
1096                 $$ = context_spec_music ($2, get_next_unique_context_id (), $4,
1097                         $3);
1098         }
1099
1100         | TIMES fraction Music
1101
1102         {
1103                 int n = scm_to_int (scm_car ($2)); int d = scm_to_int (scm_cdr ($2));
1104                 Music *mp = $3;
1105
1106                 $$= MY_MAKE_MUSIC ("TimeScaledMusic");
1107                 $$->set_spot (@$);
1108
1109                 $$->set_property ("element", mp->self_scm ());
1110                 scm_gc_unprotect_object (mp->self_scm ());
1111                 $$->set_property ("numerator", scm_int2num (n));
1112                 $$->set_property ("denominator", scm_int2num (d));
1113                 $$->compress (Moment (Rational (n,d)));
1114
1115         }
1116         | Repeated_music                { $$ = $1; }
1117         | TRANSPOSE pitch_also_in_chords pitch_also_in_chords Music {
1118                 $$ = MY_MAKE_MUSIC ("TransposedMusic");
1119                 Music *p = $4;
1120                 Pitch from = *unsmob_pitch ($2);
1121                 Pitch to = *unsmob_pitch ($3);
1122
1123                 p->transpose (pitch_interval (from, to));
1124                 $$->set_property ("element", p->self_scm ());
1125                 scm_gc_unprotect_object (p->self_scm ());
1126         }
1127         | mode_changing_head Grouped_music_list {
1128                 if ($1 == ly_symbol2scm ("chords"))
1129                 {
1130                   Music *chm = MY_MAKE_MUSIC ("UnrelativableMusic");
1131                   chm->set_property ("element", $2->self_scm ());
1132                   $$ = chm;
1133                   scm_gc_unprotect_object ($2->self_scm ());
1134                 }
1135                 else
1136                 {
1137                   $$ = $2;
1138                 }
1139                 THIS->lexer_->pop_state ();
1140         }
1141         | mode_changing_head_with_context optional_context_mod Grouped_music_list {
1142                 $$ = context_spec_music ($1, get_next_unique_context_id (),
1143                                          $3, $2);
1144                 if ($1 == ly_symbol2scm ("ChordNames"))
1145                 {
1146                   Music *chm = MY_MAKE_MUSIC ("UnrelativableMusic");
1147                   chm->set_property ("element", $$->self_scm ());
1148                   scm_gc_unprotect_object ($$->self_scm ());
1149                   $$ = chm;
1150                 }
1151                 THIS->lexer_->pop_state ();
1152         }
1153         | relative_music        { $$ = $1; }
1154         | re_rhythmed_music     { $$ = $1; }
1155         | TAG embedded_scm Music {
1156                 tag_music ($3, $2, @$);
1157                 $$ = $3;
1158         }
1159         ;
1160
1161 mode_changing_head:
1162         NOTEMODE {
1163                 SCM nn = THIS->lexer_->lookup_identifier ("pitchnames");
1164                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1165
1166                 $$ = ly_symbol2scm ("notes");
1167         }
1168         | DRUMMODE
1169                 {
1170                 SCM nn = THIS->lexer_->lookup_identifier ("drumPitchNames");
1171                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1172
1173                 $$ = ly_symbol2scm ("drums");
1174         }
1175         | FIGUREMODE {
1176                 THIS->lexer_->push_figuredbass_state ();
1177
1178                 $$ = ly_symbol2scm ("figures");
1179         }
1180         | CHORDMODE {
1181                 SCM nn = THIS->lexer_->lookup_identifier ("chordmodifiers");
1182                 THIS->lexer_->chordmodifier_tab_ = alist_to_hashq (nn);
1183                 nn = THIS->lexer_->lookup_identifier ("pitchnames");
1184                 THIS->lexer_->push_chord_state (alist_to_hashq (nn));
1185                 $$ = ly_symbol2scm ("chords");
1186
1187         }
1188         | LYRICMODE
1189                 { THIS->lexer_->push_lyric_state ();
1190                 $$ = ly_symbol2scm ("lyrics");
1191         }
1192         ;
1193
1194 mode_changing_head_with_context:
1195         DRUMS {
1196                 SCM nn = THIS->lexer_->lookup_identifier ("drumPitchNames");
1197                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1198
1199                 $$ = ly_symbol2scm ("DrumStaff");
1200         }
1201         | FIGURES {
1202                 THIS->lexer_->push_figuredbass_state ();
1203
1204                 $$ = ly_symbol2scm ("FiguredBass");
1205         }
1206         | CHORDS {
1207                 SCM nn = THIS->lexer_->lookup_identifier ("chordmodifiers");
1208                 THIS->lexer_->chordmodifier_tab_ = alist_to_hashq (nn);
1209                 nn = THIS->lexer_->lookup_identifier ("pitchnames");
1210                 THIS->lexer_->push_chord_state (alist_to_hashq (nn));
1211                 $$ = ly_symbol2scm ("ChordNames");
1212         }
1213         | LYRICS
1214                 { THIS->lexer_->push_lyric_state ();
1215                 $$ = ly_symbol2scm ("Lyrics");
1216         }
1217         ;
1218
1219
1220 relative_music:
1221         RELATIVE absolute_pitch Music {
1222                 Music *m = $3;
1223                 Pitch start = *unsmob_pitch ($2);
1224                 $$ = make_music_relative (start, m);
1225                 scm_gc_unprotect_object (m->self_scm ());
1226         }
1227         | RELATIVE Composite_music {
1228                 Music *m = $2;
1229
1230                 Pitch middle_c (0, 0, 0);
1231                 $$ = make_music_relative (middle_c, m);
1232                 scm_gc_unprotect_object (m->self_scm ());
1233         }
1234         ;
1235
1236 new_lyrics:
1237         ADDLYRICS { THIS->lexer_->push_lyric_state (); }
1238         /*cont */
1239         Grouped_music_list {
1240         /* Can also use Music at the expensive of two S/Rs similar to
1241            \repeat \alternative */
1242                 THIS->lexer_->pop_state ();
1243
1244                 $$ = scm_cons ($3->self_scm (), SCM_EOL);
1245         }
1246         | new_lyrics ADDLYRICS {
1247                 THIS->lexer_->push_lyric_state ();
1248         } Grouped_music_list {
1249                 THIS->lexer_->pop_state ();
1250                 $$ = scm_cons ($4->self_scm (), $1);
1251         }
1252         ;
1253
1254 re_rhythmed_music:
1255         Grouped_music_list new_lyrics {
1256                 Music * voice = $1;
1257                 SCM name = get_first_context_id (scm_makfrom0str ("Voice"), voice);
1258                 if (!scm_is_string (name))
1259                 {
1260                         name = get_next_unique_lyrics_context_id ();
1261                         voice = context_spec_music (scm_makfrom0str ("Voice"),
1262                                                     name,
1263                                                     voice, SCM_EOL);
1264                 }
1265
1266                 SCM context = scm_makfrom0str ("Lyrics");
1267                 Music *all = MY_MAKE_MUSIC ("SimultaneousMusic");
1268
1269                 SCM lst = SCM_EOL;
1270                 for (SCM s = $2; scm_is_pair (s); s = scm_cdr (s))
1271                 {
1272                         Music *music = unsmob_music (scm_car (s));
1273                         Music *com = make_lyric_combine_music (name, music);
1274                         Music *csm = context_spec_music (context,
1275                                 get_next_unique_context_id (), com, SCM_EOL);
1276                         lst = scm_cons (csm->self_scm (), lst);
1277                 }
1278                 all->set_property ("elements", scm_cons (voice->self_scm (),
1279                         lst));
1280                 $$ = all;
1281                 scm_gc_unprotect_object (voice->self_scm ());
1282         }
1283         | LYRICSTO {
1284                 THIS->lexer_->push_lyric_state ();
1285         } simple_string Music {
1286                 THIS->lexer_->pop_state ();
1287                 Music *music = $4;
1288                 SCM name = $3;
1289                 $$ = make_lyric_combine_music (name, music);
1290                 scm_gc_unprotect_object (music->self_scm ());
1291         }
1292         ;
1293
1294 context_change:
1295         CHANGE STRING '=' STRING  {
1296                 Music*t = MY_MAKE_MUSIC ("ContextChange");
1297                 t-> set_property ("change-to-type", scm_string_to_symbol ($2));
1298                 t-> set_property ("change-to-id", $4);
1299
1300                 $$ = t;
1301                 $$->set_spot (@$);
1302         }
1303         ;
1304
1305 property_operation:
1306         STRING '=' scalar {
1307                 $$ = scm_list_3 (ly_symbol2scm ("assign"),
1308                         scm_string_to_symbol ($1), $3);
1309         }
1310         | UNSET simple_string {
1311                 $$ = scm_list_2 (ly_symbol2scm ("unset"),
1312                         scm_string_to_symbol ($2));
1313         }
1314         | OVERRIDE simple_string embedded_scm '=' embedded_scm {
1315                 $$ = scm_list_4 (ly_symbol2scm ("push"),
1316                         scm_string_to_symbol ($2), $3, $5);
1317         }
1318         | REVERT simple_string embedded_scm {
1319                 $$ = scm_list_3 (ly_symbol2scm ("pop"),
1320                         scm_string_to_symbol ($2), $3);
1321         }
1322         ;
1323
1324 context_def_mod:
1325         CONSISTS { $$ = ly_symbol2scm ("consists"); }
1326         | REMOVE { $$ = ly_symbol2scm ("remove"); }
1327
1328         | ACCEPTS { $$ = ly_symbol2scm ("accepts"); }
1329         | DENIES { $$ = ly_symbol2scm ("denies"); }
1330
1331         | ALIAS { $$ = ly_symbol2scm ("alias"); }
1332         | TYPE { $$ = ly_symbol2scm ("translator-type"); }
1333         | DESCRIPTION { $$ = ly_symbol2scm ("description"); }
1334         | NAME { $$ = ly_symbol2scm ("context-name"); }
1335         ;
1336
1337 context_mod:
1338         property_operation { $$ = $1; }
1339         | context_def_mod STRING {
1340                 $$ = scm_list_2 ($1, $2);
1341         }
1342         ;
1343
1344 context_prop_spec:
1345         simple_string {
1346                 if (!is_regular_identifier ($1))
1347                 {
1348                         @$.error (_("Grob name should be alphanumeric"));
1349                 }
1350
1351                 $$ = scm_list_2 (ly_symbol2scm ("Bottom"),
1352                         scm_string_to_symbol ($1));
1353         }
1354         | simple_string '.' simple_string {
1355                 $$ = scm_list_2 (scm_string_to_symbol ($1),
1356                         scm_string_to_symbol ($3));
1357         }
1358         ;
1359
1360 music_property_def:
1361         OVERRIDE context_prop_spec embedded_scm '=' scalar {
1362                 $$ = property_op_to_music (scm_list_4 (
1363                         ly_symbol2scm ("poppush"),
1364                         scm_cadr ($2),
1365                         $3, $5));
1366                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1367         }
1368         | REVERT context_prop_spec embedded_scm {
1369                 $$ = property_op_to_music (scm_list_3 (
1370                         ly_symbol2scm ("pop"),
1371                         scm_cadr ($2),
1372                         $3));
1373
1374                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1375         }
1376         | SET context_prop_spec '=' scalar {
1377                 $$ = property_op_to_music (scm_list_3 (
1378                         ly_symbol2scm ("assign"),
1379                         scm_cadr ($2),
1380                         $4));
1381                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1382         }
1383         | UNSET context_prop_spec {
1384                 $$ = property_op_to_music (scm_list_2 (
1385                         ly_symbol2scm ("unset"),
1386                         scm_cadr ($2)));
1387                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1388         }
1389         | ONCE music_property_def {
1390                 SCM e = $2->get_property ("element");
1391                 unsmob_music (e)->set_property ("once", SCM_BOOL_T);
1392                 $$ = $2;
1393
1394         }
1395         ;
1396
1397
1398 string:
1399         STRING {
1400                 $$ = $1;
1401         }
1402         | STRING_IDENTIFIER {
1403                 $$ = $1;
1404         }
1405         | string '+' string {
1406                 $$ = scm_string_append (scm_list_2 ($1, $3));
1407         }
1408         ;
1409
1410 simple_string: STRING {
1411                 $$ = $1;
1412         }
1413         | LYRICS_STRING {
1414                 $$ = $1;
1415         }
1416         ;
1417
1418 scalar: string {
1419                 $$ = $1;
1420         }
1421         | LYRICS_STRING {
1422                 $$ = $1;
1423         }
1424         | bare_int {
1425                 $$ = scm_int2num ($1);
1426         }
1427         | embedded_scm {
1428                 $$ = $1;
1429         }
1430         | full_markup {
1431                 $$ = $1;
1432         }
1433         | DIGIT {
1434                 $$ = scm_int2num ($1);
1435         }
1436         ;
1437
1438 /*
1439
1440 pre_events doesn't contain anything. It is a trick:
1441
1442 Adding pre_events to the simple_element
1443 makes the choice between
1444
1445   string:  STRING
1446
1447 and
1448
1449   simple_element: STRING
1450
1451 a single shift/reduction conflict.
1452
1453 nevertheless, this is not very clean, and we should find a different
1454 solution.
1455
1456 */
1457 pre_events: /* empty */
1458         ;
1459
1460 event_chord:
1461         pre_events simple_element post_events   {
1462                 SCM elts = $2-> get_property ("elements");
1463
1464                 elts = ly_append2 (elts, scm_reverse_x ($3, SCM_EOL));
1465
1466                 $2->set_property ("elements", elts);
1467                 /* why is this giving wrong start location? -ns
1468                  * $2->set_spot (@$); */
1469                 Input i;
1470                 i.set_location (@2, @3);
1471                 $2->set_spot (i);
1472                 $$ = $2;
1473         }
1474         | command_element
1475         | note_chord_element
1476         ;
1477
1478
1479 note_chord_element:
1480         chord_body optional_notemode_duration post_events
1481         {
1482                 SCM dur = unsmob_duration ($2)->smobbed_copy ();
1483                 SCM es = $1->get_property ("elements");
1484                 SCM postevs = scm_reverse_x ($3, SCM_EOL);
1485
1486                 for (SCM s = es; scm_is_pair (s); s = scm_cdr (s))
1487                   unsmob_music (scm_car (s))->set_property ("duration", dur);
1488                 es = ly_append2 (es, postevs);
1489
1490                 $1-> set_property ("elements", es);
1491                 $1->set_spot (@$);
1492                 $$ = $1;
1493         }
1494         ;
1495
1496 chord_open: '<'
1497         ;
1498
1499 chord_close: '>'
1500         ;
1501
1502 simul_open: DOUBLE_ANGLE_OPEN
1503         ;
1504
1505 simul_close: DOUBLE_ANGLE_CLOSE
1506         ;
1507
1508 chord_body:
1509         chord_open chord_body_elements chord_close
1510         {
1511                 $$ = MY_MAKE_MUSIC ("EventChord");
1512                 $$->set_spot (@$);
1513                 $$->set_property ("elements",
1514                         scm_reverse_x ($2, SCM_EOL));
1515         }
1516         ;
1517
1518 chord_body_elements:
1519         /* empty */             { $$ = SCM_EOL; }
1520         | chord_body_elements chord_body_element {
1521                 $$ = scm_cons ($2->self_scm (), $1);
1522                 scm_gc_unprotect_object ($2->self_scm ());
1523         }
1524         ;
1525
1526 chord_body_element:
1527         pitch exclamations questions octave_check post_events
1528         {
1529                 int q = $3;
1530                 int ex = $2;
1531                 SCM check = $4;
1532                 SCM post = $5;
1533
1534                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
1535                 n->set_property ("pitch", $1);
1536                 n->set_spot (@$);
1537                 if (q % 2)
1538                         n->set_property ("cautionary", SCM_BOOL_T);
1539                 if (ex % 2 || q % 2)
1540                         n->set_property ("force-accidental", SCM_BOOL_T);
1541
1542                 if (scm_is_pair (post)) {
1543                         SCM arts = scm_reverse_x (post, SCM_EOL);
1544                         n->set_property ("articulations", arts);
1545                 }
1546                 if (scm_is_number (check))
1547                 {
1548                         int q = scm_to_int (check);
1549                         n->set_property ("absolute-octave", scm_int2num (q-1));
1550                 }
1551
1552
1553                 $$ = n;
1554         }
1555         | DRUM_PITCH post_events {
1556                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
1557                 n->set_property ("duration", $2);
1558                 n->set_property ("drum-type", $1);
1559                 n->set_spot (@$);
1560
1561                 if (scm_is_pair ($2)) {
1562                         SCM arts = scm_reverse_x ($2, SCM_EOL);
1563                         n->set_property ("articulations", arts);
1564                 }
1565                 $$ = n;
1566         }
1567         ;
1568
1569 add_quote:
1570         ADDQUOTE string Music {
1571                 SCM adder = ly_lily_module_constant ("add-quotable");
1572
1573                 scm_call_2 (adder, $2, $3->self_scm ());
1574                 scm_gc_unprotect_object ($3->self_scm ());
1575         }
1576         ;
1577
1578 command_element:
1579         command_req {
1580                 $$ = MY_MAKE_MUSIC ("EventChord");
1581                 $$->set_property ("elements", scm_cons ($1->self_scm (), SCM_EOL));
1582                 scm_gc_unprotect_object ($1->self_scm ());
1583
1584                 $$-> set_spot (@$);
1585                 $1-> set_spot (@$);
1586         }
1587         | SKIP duration_length {
1588                 Music *skip = MY_MAKE_MUSIC ("SkipMusic");
1589                 skip->set_property ("duration", $2);
1590                 skip->set_spot (@$);
1591                 $$ = skip;
1592         }
1593         | OCTAVE pitch {
1594                 Music *m = MY_MAKE_MUSIC ("RelativeOctaveCheck");
1595                 $$ = m;
1596                 $$->set_spot (@$);
1597                 $$->set_property ("pitch", $2);
1598         }
1599         | E_LEFTSQUARE {
1600                 Music *m = MY_MAKE_MUSIC ("LigatureEvent");
1601                 m->set_property ("span-direction", scm_int2num (START));
1602                 m->set_spot (@$);
1603
1604                 $$ = MY_MAKE_MUSIC ("EventChord");
1605                 $$->set_property ("elements", scm_cons (m->self_scm (), SCM_EOL));
1606                 scm_gc_unprotect_object (m->self_scm ());
1607                 $$->set_spot (@$);
1608         }
1609         | E_RIGHTSQUARE {
1610                 Music *m = MY_MAKE_MUSIC ("LigatureEvent");
1611                 m->set_property ("span-direction", scm_int2num (STOP));
1612                 m->set_spot (@$);
1613
1614                 $$ = MY_MAKE_MUSIC ("EventChord");
1615                 $$->set_property ("elements", scm_cons (m->self_scm (), SCM_EOL));
1616                 $$->set_spot (@$);
1617                 scm_gc_unprotect_object (m->self_scm ());
1618         }
1619         | E_BACKSLASH {
1620                 $$ = MY_MAKE_MUSIC ("VoiceSeparator");
1621                 $$->set_spot (@$);
1622         }
1623         | '|'      {
1624                 SCM pipe = THIS->lexer_->lookup_identifier ("pipeSymbol");
1625
1626                 if (Music * m = unsmob_music (pipe))
1627                         $$ = m->clone ();
1628                 else
1629                         $$ = MY_MAKE_MUSIC ("BarCheck");
1630
1631                 $$->set_spot (@$);
1632         }
1633         | TRANSPOSITION pitch {
1634                 Pitch middle_c;
1635                 Pitch sounds_as_c = pitch_interval (*unsmob_pitch ($2), middle_c);
1636                 $$ = set_property_music (ly_symbol2scm ("instrumentTransposition"),
1637                                          sounds_as_c.smobbed_copy());
1638                 $$->set_spot (@$);
1639                 $$ = context_spec_music (ly_symbol2scm ("Staff"), SCM_UNDEFINED,
1640                         $$, SCM_EOL);
1641         }
1642         | BAR STRING                    {
1643                 Music *t = set_property_music (ly_symbol2scm ("whichBar"), $2);
1644
1645                 Music *csm = context_spec_music (ly_symbol2scm ("Timing"), SCM_UNDEFINED,
1646                                         t, SCM_EOL);
1647                 $$ = context_spec_music (ly_symbol2scm ("Score"), SCM_UNDEFINED, csm, SCM_EOL);
1648                 $$->set_spot (@$);
1649                 t->set_spot (@$);
1650         }
1651         | PARTIAL duration_length       {
1652                 Moment m = - unsmob_duration ($2)->get_length ();
1653                 Music *p = set_property_music (ly_symbol2scm ( "measurePosition"),m.smobbed_copy ());
1654                 p->set_spot (@$);
1655                 p = context_spec_music (ly_symbol2scm ("Timing"), SCM_UNDEFINED,
1656                                         p, SCM_EOL);
1657                 p = context_spec_music (ly_symbol2scm ("Score"), SCM_UNDEFINED,
1658                                         p, SCM_EOL);
1659                 $$ = p;
1660         }
1661         | CLEF STRING  {
1662                 SCM proc = ly_lily_module_constant ("make-clef-set");
1663
1664                 SCM result = scm_call_1 (proc, $2);
1665                 scm_gc_protect_object (result);
1666                 $$ = unsmob_music (result);
1667         }
1668         | TIME_T fraction  {
1669                 SCM proc = ly_lily_module_constant ("make-time-signature-set");
1670
1671                 SCM result = scm_apply_2   (proc, scm_car ($2), scm_cdr ($2), SCM_EOL);
1672                 scm_gc_protect_object (result);
1673                 $$ = unsmob_music (result);
1674         }
1675         | MARK scalar {
1676                 SCM proc = ly_lily_module_constant ("make-mark-set");
1677
1678                 SCM result = scm_call_1 (proc, $2);
1679                 scm_gc_protect_object (result);
1680                 $$ = unsmob_music (result);
1681         }
1682         ;
1683
1684 command_req:
1685         E_TILDE {
1686                 $$ = MY_MAKE_MUSIC ("PesOrFlexaEvent");
1687         }
1688         | MARK DEFAULT  {
1689                 Music *m = MY_MAKE_MUSIC ("MarkEvent");
1690                 $$ = m;
1691         }
1692         | tempo_event {
1693                 $$ = $1;
1694         }
1695         | KEY DEFAULT {
1696                 Music *key = MY_MAKE_MUSIC ("KeyChangeEvent");
1697                 $$ = key;
1698         }
1699         | KEY NOTENAME_PITCH SCM_IDENTIFIER     {
1700
1701                 Music *key = MY_MAKE_MUSIC ("KeyChangeEvent");
1702                 if (scm_ilength ($3) > 0)
1703                 {
1704                         key->set_property ("pitch-alist", $3);
1705                         key->set_property ("tonic", Pitch (0,0,0).smobbed_copy ());
1706                         key->transpose (* unsmob_pitch ($2));
1707                 } else {
1708                         THIS->parser_error (@3, _ ("Second argument must be pitch list."));
1709                 }
1710
1711                 $$ = key;
1712         }
1713         ;
1714
1715
1716 post_events:
1717         /* empty */ {
1718                 $$ = SCM_EOL;
1719         }
1720         | post_events post_event {
1721                 $2->set_spot (@2);
1722                 $$ = scm_cons ($2->self_scm (), $$);
1723                 scm_gc_unprotect_object ($2->self_scm ());
1724         }
1725         | post_events tagged_post_event {
1726                 $2 -> set_spot (@2);
1727                 $$ = scm_cons ($2->self_scm (), $$);
1728                 scm_gc_unprotect_object ($2->self_scm ());
1729         }
1730         ;
1731
1732
1733 tagged_post_event:
1734         '-' TAG embedded_scm post_event {
1735                 tag_music ($4, $3, @$);
1736                 $$ = $4;
1737         }
1738         ;
1739
1740
1741 post_event:
1742         direction_less_event {
1743                 $$ = $1;
1744         }
1745         | HYPHEN {
1746                 if (!THIS->lexer_->is_lyric_state ())
1747                         THIS->parser_error (@1, _ ("Have to be in Lyric mode for lyrics"));
1748                 $$ = MY_MAKE_MUSIC ("HyphenEvent");
1749         }
1750         | EXTENDER {
1751                 if (!THIS->lexer_->is_lyric_state ())
1752                         THIS->parser_error (@1, _ ("Have to be in Lyric mode for lyrics"));
1753                 $$ = MY_MAKE_MUSIC ("ExtenderEvent");
1754         }
1755         | script_dir direction_reqd_event {
1756                 if ($1)
1757                         $2->set_property ("direction", scm_int2num ($1));
1758                 $$ = $2;
1759         }
1760         | script_dir direction_less_event {
1761                 if ($1)
1762                         $2->set_property ("direction", scm_int2num ($1));
1763                 $$ = $2;
1764         }
1765         | string_number_event
1766         ;
1767
1768 string_number_event:
1769         E_UNSIGNED {
1770                 Music *s = MY_MAKE_MUSIC ("StringNumberEvent");
1771                 s->set_property ("string-number", scm_int2num ($1));
1772                 s->set_spot (@$);
1773                 $$ = s;
1774         }
1775         ;
1776
1777 direction_less_char:
1778         '['  {
1779                 $$ = ly_symbol2scm ("bracketOpenSymbol");
1780         }
1781         | ']'  {
1782                 $$ = ly_symbol2scm ("bracketCloseSymbol");
1783         }
1784         | '~'  {
1785                 $$ = ly_symbol2scm ("tildeSymbol");
1786         }
1787         | '('  {
1788                 $$ = ly_symbol2scm ("parenthesisOpenSymbol");
1789         }
1790         | ')'  {
1791                 $$ = ly_symbol2scm ("parenthesisCloseSymbol");
1792         }
1793         | E_EXCLAMATION  {
1794                 $$ = ly_symbol2scm ("escapedExclamationSymbol");
1795         }
1796         | E_OPEN  {
1797                 $$ = ly_symbol2scm ("escapedParenthesisOpenSymbol");
1798         }
1799         | E_CLOSE  {
1800                 $$ = ly_symbol2scm ("escapedParenthesisCloseSymbol");
1801         }
1802         | E_BIGGER  {
1803                 $$ = ly_symbol2scm ("escapedBiggerSymbol");
1804         }
1805         | E_SMALLER  {
1806                 $$ = ly_symbol2scm ("escapedSmallerSymbol");
1807         }
1808         ;
1809
1810 direction_less_event:
1811         direction_less_char {
1812                 SCM predefd = THIS->lexer_->lookup_identifier_symbol ($1);
1813                 Music * m = 0;
1814                 if (unsmob_music (predefd))
1815                 {
1816                         m = unsmob_music (predefd)->clone ();
1817                 }
1818                 else
1819                 {
1820                         m = MY_MAKE_MUSIC ("Music");
1821                 }
1822                 m->set_spot (@$);
1823                 $$ = m;
1824         }
1825         | EVENT_IDENTIFIER      {
1826                 $$ = unsmob_music ($1);
1827         }
1828         | tremolo_type  {
1829                Music *a = MY_MAKE_MUSIC ("TremoloEvent");
1830                a->set_spot (@$);
1831                a->set_property ("tremolo-type", scm_int2num ($1));
1832                $$ = a;
1833         }
1834         ;
1835
1836 direction_reqd_event:
1837         gen_text_def {
1838                 $$ = $1;
1839         }
1840         | script_abbreviation {
1841                 SCM s = THIS->lexer_->lookup_identifier ("dash" + ly_scm2string ($1));
1842                 Music *a = MY_MAKE_MUSIC ("ArticulationEvent");
1843                 if (scm_is_string (s))
1844                         a->set_property ("articulation-type", s);
1845                 else THIS->parser_error (@1, _ ("Expecting string as script definition"));
1846                 $$ = a;
1847         }
1848         ;
1849
1850 octave_check:
1851         /**/ { $$ = SCM_EOL; }
1852         | '='  { $$ = scm_int2num (0); }
1853         | '=' sub_quotes { $$ = scm_int2num ($2); }
1854         | '=' sup_quotes { $$ = scm_int2num ($2); }
1855         ;
1856
1857 sup_quotes:
1858         '\'' {
1859                 $$ = 1;
1860         }
1861         | sup_quotes '\'' {
1862                 $$ ++;
1863         }
1864         ;
1865
1866 sub_quotes:
1867         ',' {
1868                 $$ = 1;
1869         }
1870         | sub_quotes ',' {
1871                 $$++;
1872         }
1873         ;
1874
1875 steno_pitch:
1876         NOTENAME_PITCH  {
1877                 $$ = $1;
1878         }
1879         | NOTENAME_PITCH sup_quotes     {
1880                 Pitch p = *unsmob_pitch ($1);
1881                 p = p.transposed (Pitch ($2,0,0));
1882                 $$ = p.smobbed_copy ();
1883         }
1884         | NOTENAME_PITCH sub_quotes      {
1885                 Pitch p =* unsmob_pitch ($1);
1886                 p = p.transposed (Pitch (-$2,0,0));
1887                 $$ = p.smobbed_copy ();
1888         }
1889         ;
1890
1891 /*
1892 ugh. duplication
1893 */
1894
1895 steno_tonic_pitch:
1896         TONICNAME_PITCH {
1897                 $$ = $1;
1898         }
1899         | TONICNAME_PITCH sup_quotes    {
1900                 Pitch p = *unsmob_pitch ($1);
1901                 p = p.transposed (Pitch ($2,0,0));
1902                 $$ = p.smobbed_copy ();
1903         }
1904         | TONICNAME_PITCH sub_quotes     {
1905                 Pitch p =* unsmob_pitch ($1);
1906
1907                 p = p.transposed (Pitch (-$2,0,0));
1908                 $$ = p.smobbed_copy ();
1909         }
1910         ;
1911
1912 pitch:
1913         steno_pitch {
1914                 $$ = $1;
1915         }
1916         ;
1917
1918 pitch_also_in_chords:
1919         pitch
1920         | steno_tonic_pitch
1921         ;
1922
1923 gen_text_def:
1924         full_markup {
1925                 Music *t = MY_MAKE_MUSIC ("TextScriptEvent");
1926                 t->set_property ("text", $1);
1927                 t->set_spot (@$);
1928                 $$ = t;
1929         }
1930         | string {
1931                 Music *t = MY_MAKE_MUSIC ("TextScriptEvent");
1932                 t->set_property ("text",
1933                         make_simple_markup ($1));
1934                 t->set_spot (@$);
1935                 $$ = t;
1936
1937         }
1938         | DIGIT {
1939                 Music *t = MY_MAKE_MUSIC ("FingerEvent");
1940                 t->set_property ("digit", scm_int2num ($1));
1941                 t->set_spot (@$);
1942                 $$ = t;
1943         }
1944         ;
1945
1946 script_abbreviation:
1947         '^'             {
1948                 $$ = scm_makfrom0str ("Hat");
1949         }
1950         | '+'           {
1951                 $$ = scm_makfrom0str ("Plus");
1952         }
1953         | '-'           {
1954                 $$ = scm_makfrom0str ("Dash");
1955         }
1956         | '|'           {
1957                 $$ = scm_makfrom0str ("Bar");
1958         }
1959         | '>'           {
1960                 $$ = scm_makfrom0str ("Larger");
1961         }
1962         | '.'           {
1963                 $$ = scm_makfrom0str ("Dot");
1964         }
1965         | '_' {
1966                 $$ = scm_makfrom0str ("Underscore");
1967         }
1968         ;
1969
1970 script_dir:
1971         '_'     { $$ = DOWN; }
1972         | '^'   { $$ = UP; }
1973         | '-'   { $$ = CENTER; }
1974         ;
1975
1976
1977 absolute_pitch:
1978         steno_pitch     {
1979                 $$ = $1;
1980         }
1981         ;
1982
1983 duration_length:
1984         multiplied_duration {
1985                 $$ = $1;
1986         }
1987         ;
1988
1989 optional_notemode_duration:
1990         {
1991                 Duration dd = THIS->default_duration_;
1992                 $$ = dd.smobbed_copy ();
1993
1994                 THIS->beam_check ($$);
1995         }
1996         | multiplied_duration   {
1997                 $$ = $1;
1998                 THIS->default_duration_ = *unsmob_duration ($$);
1999
2000                 THIS->beam_check ($$);
2001         }
2002         ;
2003
2004 steno_duration:
2005         bare_unsigned dots              {
2006                 int len = 0;
2007                 if (!is_duration ($1))
2008                         THIS->parser_error (@1, _f ("not a duration: %d", $1));
2009                 else
2010                         len = intlog2 ($1);
2011
2012                 $$ = Duration (len, $2).smobbed_copy ();
2013         }
2014         | DURATION_IDENTIFIER dots      {
2015                 Duration *d = unsmob_duration ($1);
2016                 Duration k (d->duration_log (), d->dot_count () + $2);
2017                 *d = k;
2018                 $$ = $1;
2019         }
2020         ;
2021
2022 multiplied_duration:
2023         steno_duration {
2024                 $$ = $1;
2025         }
2026         | multiplied_duration '*' bare_unsigned {
2027                 $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
2028         }
2029         | multiplied_duration '*' FRACTION {
2030                 Rational  m (scm_to_int (scm_car ($3)), scm_to_int (scm_cdr ($3)));
2031
2032                 $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
2033         }
2034         ;
2035
2036 fraction:
2037         FRACTION { $$ = $1; }
2038         | UNSIGNED '/' UNSIGNED {
2039                 $$ = scm_cons (scm_int2num ($1), scm_int2num ($3));
2040         }
2041         ;
2042
2043 dots:
2044         /* empty */     {
2045                 $$ = 0;
2046         }
2047         | dots '.' {
2048                 $$ ++;
2049         }
2050         ;
2051
2052 tremolo_type:
2053         ':'     {
2054                 $$ = 0;
2055         }
2056         | ':' bare_unsigned {
2057                 if (!is_duration ($2))
2058                         THIS->parser_error (@2, _f ("not a duration: %d", $2));
2059                 $$ = $2;
2060         }
2061         ;
2062
2063 bass_number:
2064         DIGIT   {
2065                 $$ = scm_number_to_string (scm_int2num ($1), scm_int2num (10));
2066                 $$ = scm_list_2 (ly_lily_module_constant ("number-markup"),
2067                                 $$);
2068         }
2069         | UNSIGNED {
2070                 $$ = scm_number_to_string (scm_int2num ($1), scm_int2num (10));
2071                 $$ = scm_list_2 (ly_lily_module_constant ("number-markup"),
2072                                 $$);
2073         }
2074         | STRING { $$ = $1; }
2075         ;
2076
2077 bass_mod:
2078         '-'     { $$ = -2; }
2079         | '+'   { $$ = 2; }
2080         | '!'   { $$ = 0; }
2081         ;
2082
2083 bass_figure:
2084         FIGURE_SPACE {
2085                 Music *bfr = MY_MAKE_MUSIC ("BassFigureEvent");
2086                 $$ = bfr->self_scm ();
2087                 scm_gc_unprotect_object ($$);
2088         }
2089         | bass_number  {
2090                 Music *bfr = MY_MAKE_MUSIC ("BassFigureEvent");
2091                 $$ = bfr->self_scm ();
2092
2093                 bfr->set_property ("figure", $1);
2094
2095                 scm_gc_unprotect_object ($$);
2096         }
2097         | bass_figure bass_mod {
2098                 Music *m = unsmob_music ($1);
2099                 if ($2) {
2100                         SCM salter = m->get_property ("alteration");
2101                         int alter = scm_is_number (salter) ? scm_to_int (salter) : 0;
2102                         m->set_property ("alteration",
2103                                 scm_int2num (alter + $2));
2104                 } else {
2105                         m->set_property ("alteration", scm_int2num (0));
2106                 }
2107         }
2108         ;
2109
2110 br_bass_figure:
2111         '[' bass_figure {
2112                 $$ = $2;
2113                 unsmob_music ($$)->set_property ("bracket-start", SCM_BOOL_T);
2114         }
2115         | bass_figure   {
2116                 $$ = $1;
2117         }
2118         | br_bass_figure ']' {
2119                 $$ = $1;
2120                 unsmob_music ($1)->set_property ("bracket-stop", SCM_BOOL_T);
2121         }
2122         ;
2123
2124 figure_list:
2125         /**/            {
2126                 $$ = SCM_EOL;
2127         }
2128         | figure_list br_bass_figure {
2129                 $$ = scm_cons ($2, $1);
2130         }
2131         ;
2132
2133 figure_spec:
2134         FIGURE_OPEN figure_list FIGURE_CLOSE {
2135                 Music *m = MY_MAKE_MUSIC ("EventChord");
2136                 $2 = scm_reverse_x ($2, SCM_EOL);
2137                 m->set_property ("elements", $2);
2138                 $$ = m->self_scm ();
2139         }
2140         ;
2141
2142
2143 optional_rest:
2144         /**/   { $$ = 0; }
2145         | REST { $$ = 1; }
2146         ;
2147
2148 simple_element:
2149         pitch exclamations questions octave_check optional_notemode_duration optional_rest {
2150                 if (!THIS->lexer_->is_note_state ())
2151                         THIS->parser_error (@1, _ ("Have to be in Note mode for notes"));
2152
2153                 Music *n = 0;
2154                 if ($6)
2155                         n = MY_MAKE_MUSIC ("RestEvent");
2156                 else
2157                         n = MY_MAKE_MUSIC ("NoteEvent");
2158
2159                 n->set_property ("pitch", $1);
2160                 n->set_property ("duration", $5);
2161
2162                 if (scm_is_number ($4))
2163                 {
2164                         int q = scm_to_int ($4);
2165                         n->set_property ("absolute-octave", scm_int2num (q-1));
2166                 }
2167
2168                 if ($3 % 2)
2169                         n->set_property ("cautionary", SCM_BOOL_T);
2170                 if ($2 % 2 || $3 % 2)
2171                         n->set_property ("force-accidental", SCM_BOOL_T);
2172
2173                 Music *v = MY_MAKE_MUSIC ("EventChord");
2174                 v->set_property ("elements", scm_list_1 (n->self_scm ()));
2175                 scm_gc_unprotect_object (n->self_scm ());
2176
2177                 v->set_spot (@$);
2178                 n->set_spot (@$);
2179                 $$ = v;
2180         }
2181         | DRUM_PITCH optional_notemode_duration {
2182                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
2183                 n->set_property ("duration", $2);
2184                 n->set_property ("drum-type", $1);
2185
2186                 Music *v = MY_MAKE_MUSIC ("EventChord");
2187                 v->set_property ("elements", scm_list_1 (n->self_scm ()));
2188                 scm_gc_unprotect_object (n->self_scm ());
2189                 v->set_spot (@$);
2190                 n->set_spot (@$);
2191                 $$ = v;
2192
2193         }
2194         | figure_spec optional_notemode_duration {
2195                 Music *m = unsmob_music ($1);
2196                 m->set_spot (@$);
2197                 for (SCM s = m->get_property ("elements"); scm_is_pair (s); s = scm_cdr (s))
2198                 {
2199                         unsmob_music (scm_car (s))->set_property ("duration", $2);
2200                 }
2201                 $$ = m;
2202         }
2203         | RESTNAME optional_notemode_duration           {
2204                 Music *ev = 0;
2205                 if (ly_scm2string ($1) == "s") {
2206                         /* Space */
2207                         ev = MY_MAKE_MUSIC ("SkipEvent");
2208                   }
2209                 else {
2210                         ev = MY_MAKE_MUSIC ("RestEvent");
2211
2212                     }
2213                 ev->set_property ("duration", $2);
2214                 ev->set_spot (@$);
2215                 Music *velt = MY_MAKE_MUSIC ("EventChord");
2216                 velt->set_property ("elements", scm_list_1 (ev->self_scm ()));
2217                 velt->set_spot (@$);
2218
2219                 scm_gc_unprotect_object (ev->self_scm ());
2220
2221                 $$ = velt;
2222         }
2223         | MULTI_MEASURE_REST optional_notemode_duration         {
2224                 SCM proc = ly_lily_module_constant ("make-multi-measure-rest");
2225                 SCM mus = scm_call_2 (proc, $2, make_input (@$));
2226                 scm_gc_protect_object (mus);
2227                 $$ = unsmob_music (mus);
2228         }
2229
2230         | lyric_element optional_notemode_duration      {
2231                 if (!THIS->lexer_->is_lyric_state ())
2232                         THIS->parser_error (@1, _ ("Have to be in Lyric mode for lyrics"));
2233
2234                 Music *lreq = MY_MAKE_MUSIC ("LyricEvent");
2235                 lreq->set_property ("text", $1);
2236                 lreq->set_property ("duration",$2);
2237                 lreq->set_spot (@$);
2238                 Music *velt = MY_MAKE_MUSIC ("EventChord");
2239                 velt->set_property ("elements", scm_list_1 (lreq->self_scm ()));
2240
2241                 $$= velt;
2242         }
2243         | new_chord {
2244                 if (!THIS->lexer_->is_chord_state ())
2245                         THIS->parser_error (@1, _ ("Have to be in Chord mode for chords"));
2246                 $$ = unsmob_music ($1);
2247         }
2248         ;
2249
2250 lyric_element:
2251         /* FIXME: lyric flavoured markup would be better */
2252         full_markup {
2253                 $$ = $1;
2254         }
2255         | LYRICS_STRING {
2256                 $$ = make_simple_markup ($1);
2257         }
2258         ;
2259
2260 new_chord:
2261         steno_tonic_pitch optional_notemode_duration   {
2262                 $$ = make_chord ($1, $2, SCM_EOL);
2263         }
2264         | steno_tonic_pitch optional_notemode_duration chord_separator chord_items {
2265                 SCM its = scm_reverse_x ($4, SCM_EOL);
2266                 $$ = make_chord ($1, $2, scm_cons ($3, its));
2267         }
2268         ;
2269
2270 chord_items:
2271         /**/ {
2272                 $$ = SCM_EOL;
2273         }
2274         | chord_items chord_item {
2275                 $$ = scm_cons ($2, $$);
2276         }
2277         ;
2278
2279 chord_separator:
2280         CHORD_COLON {
2281                 $$ = ly_symbol2scm ("chord-colon");
2282         }
2283         | CHORD_CARET {
2284                 $$ = ly_symbol2scm ("chord-caret");
2285         }
2286         | CHORD_SLASH steno_tonic_pitch {
2287                 $$ = scm_list_2 (ly_symbol2scm ("chord-slash"), $2);
2288         }
2289         | CHORD_BASS steno_tonic_pitch {
2290                 $$ = scm_list_2 (ly_symbol2scm ("chord-bass"), $2);
2291         }
2292         ;
2293
2294 chord_item:
2295         chord_separator {
2296                 $$ = $1;
2297         }
2298         | step_numbers {
2299                 $$ = scm_reverse_x ($1, SCM_EOL);
2300         }
2301         | CHORD_MODIFIER  {
2302                 $$ = $1;
2303         }
2304         ;
2305
2306 step_numbers:
2307         step_number { $$ = scm_cons ($1, SCM_EOL); }
2308         | step_numbers '.' step_number {
2309                 $$ = scm_cons ($3, $$);
2310         }
2311         ;
2312
2313 step_number:
2314         bare_unsigned {
2315                 $$ = make_chord_step ($1, 0);
2316         }
2317         | bare_unsigned '+' {
2318                 $$ = make_chord_step ($1, SHARP);
2319         }
2320         | bare_unsigned CHORD_MINUS {
2321                 $$ = make_chord_step ($1, FLAT);
2322         }
2323         ;
2324
2325 /*
2326         UTILITIES
2327
2328 TODO: should deprecate in favor of Scheme?
2329
2330  */
2331 number_expression:
2332         number_expression '+' number_term {
2333                 $$ = scm_sum ($1, $3);
2334         }
2335         | number_expression '-' number_term {
2336                 $$ = scm_difference ($1, $3);
2337         }
2338         | number_term
2339         ;
2340
2341 number_term:
2342         number_factor {
2343                 $$ = $1;
2344         }
2345         | number_factor '*' number_factor {
2346                 $$ = scm_product ($1, $3);
2347         }
2348         | number_factor '/' number_factor {
2349                 $$ = scm_divide ($1, $3);
2350         }
2351         ;
2352
2353 number_factor:
2354         '-'  number_factor { /* %prec UNARY_MINUS */
2355                 $$ = scm_difference ($2, SCM_UNDEFINED);
2356         }
2357         | bare_number
2358         ;
2359
2360
2361 bare_number:
2362         UNSIGNED        {
2363                 $$ = scm_int2num ($1);
2364         }
2365         | REAL          {
2366                 $$ = $1;
2367         }
2368         | NUMBER_IDENTIFIER             {
2369                 $$ = $1;
2370         }
2371         | REAL NUMBER_IDENTIFIER        {
2372                 $$ = scm_make_real (scm_to_double ($1) *scm_to_double ($2));
2373         }
2374         | UNSIGNED NUMBER_IDENTIFIER    {
2375                 $$ = scm_make_real ($1 *scm_to_double ($2));
2376         }
2377         ;
2378
2379
2380 bare_unsigned:
2381         UNSIGNED {
2382                         $$ = $1;
2383         }
2384         | DIGIT {
2385                 $$ = $1;
2386         }
2387         ;
2388
2389 bare_int:
2390         bare_number {
2391                 if (scm_integer_p ($1) == SCM_BOOL_T)
2392                 {
2393                         int k = scm_to_int ($1);
2394                         $$ = k;
2395                 } else
2396                 {
2397                         THIS->parser_error (@1, _ ("need integer number arg"));
2398                         $$ = 0;
2399                 }
2400         }
2401         | '-' bare_int {
2402                 $$ = -$2;
2403         }
2404         ;
2405
2406 exclamations:
2407                 { $$ = 0; }
2408         | exclamations '!'      { $$ ++; }
2409         ;
2410
2411 questions:
2412                 { $$ = 0; }
2413         | questions '?' { $$ ++; }
2414         ;
2415
2416 /*
2417 This should be done more dynamically if possible.
2418 */
2419
2420 full_markup:
2421         MARKUP_IDENTIFIER {
2422                 $$ = $1;
2423         }
2424         | MARKUP
2425                 { THIS->lexer_->push_markup_state (); }
2426         markup_top {
2427                 $$ = $3;
2428                 THIS->lexer_->pop_state ();
2429         }
2430         ;
2431
2432 markup_top:
2433         markup_list {
2434                 $$ = scm_list_2 (ly_lily_module_constant ("line-markup"),  $1);
2435         }
2436         | markup_head_1_list simple_markup      {
2437                 $$ = scm_car (scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, scm_list_1 ($2)));
2438         }
2439         | simple_markup {
2440                 $$ = $1;
2441         }
2442         ;
2443
2444 markup_list:
2445         markup_composed_list {
2446                 $$ = $1;
2447         }
2448         | markup_braced_list {
2449                 $$ = $1;
2450         }
2451         ;
2452
2453 markup_composed_list:
2454         markup_head_1_list markup_braced_list {
2455                 $$ = scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, $2);
2456
2457         }
2458         ;
2459
2460 markup_braced_list:
2461         '{' markup_braced_list_body '}' {
2462                 $$ = scm_reverse_x ($2, SCM_EOL);
2463         }
2464         ;
2465
2466 markup_braced_list_body:
2467         /* empty */     {  $$ = scm_list (SCM_EOL); }
2468         | markup_braced_list_body markup {
2469                 $$ = scm_cons ($2, $1);
2470         }
2471         | markup_braced_list_body markup_list {
2472                 $$ = scm_append_x (scm_list_2 (scm_reverse_x ($2, SCM_EOL), $1));
2473         }
2474         ;
2475
2476 markup_head_1_item:
2477         MARKUP_HEAD_MARKUP0     {
2478                 $$ = scm_list_1 ($1);
2479         }
2480         | MARKUP_HEAD_SCM0_MARKUP1 embedded_scm {
2481                 $$ = scm_list_2 ($1, $2);
2482         }
2483         | MARKUP_HEAD_SCM0_SCM1_MARKUP2 embedded_scm embedded_scm       {
2484                 $$ = scm_list_3 ($1, $2, $3);
2485         }
2486         ;
2487
2488 markup_head_1_list:
2489         markup_head_1_item      {
2490                 $$ = scm_list_1 ($1);
2491         }
2492         | markup_head_1_list markup_head_1_item {
2493                 $$ = scm_cons ($2, $1);
2494         }
2495         ;
2496
2497 simple_markup:
2498         STRING {
2499                 $$ = make_simple_markup ($1);
2500         }
2501         | MARKUP_IDENTIFIER {
2502                 $$ = $1;
2503         }
2504         | STRING_IDENTIFIER {
2505                 $$ = $1;
2506         }
2507         | SCORE {
2508                 SCM nn = THIS->lexer_->lookup_identifier ("pitchnames");
2509                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
2510         } '{' score_body '}' {
2511                 Score * sc = $4;
2512                 $$ = scm_list_2 (ly_lily_module_constant ("score-markup"), sc->self_scm ());
2513                 scm_gc_unprotect_object (sc->self_scm ());
2514                 THIS->lexer_->pop_state ();
2515         }
2516         | MARKUP_HEAD_SCM0 embedded_scm {
2517                 $$ = scm_list_2 ($1, $2);
2518         }
2519         | MARKUP_HEAD_SCM0_SCM1_SCM2 embedded_scm embedded_scm embedded_scm {
2520                 $$ = scm_list_4 ($1, $2, $3, $4);
2521         }
2522         | MARKUP_HEAD_SCM0_SCM1 embedded_scm embedded_scm {
2523                 $$ = scm_list_3 ($1, $2, $3);
2524         }
2525         | MARKUP_HEAD_EMPTY {
2526                 $$ = scm_list_1 ($1);
2527         }
2528         | MARKUP_HEAD_LIST0 markup_list {
2529                 $$ = scm_list_2 ($1,$2);
2530         }
2531         | MARKUP_HEAD_MARKUP0_MARKUP1 markup markup {
2532                 $$ = scm_list_3 ($1, $2, $3);
2533         }
2534         ;
2535
2536 markup:
2537         markup_head_1_list simple_markup        {
2538                 $$ = scm_car (scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, scm_list_1 ($2)));
2539         }
2540         | simple_markup {
2541                 $$ = $1;
2542         }
2543         ;
2544
2545 %%
2546
2547 void
2548 Lily_parser::set_yydebug (bool )
2549 {
2550 #if 0
2551         yydebug = 1;
2552 #endif
2553 }
2554
2555 void
2556 Lily_parser::do_yyparse ()
2557 {
2558         yyparse ((void*)this);
2559 }
2560
2561
2562 /*
2563 Should make this optional?    It will also complain when you do
2564
2565         [s4]
2566
2567 which is entirely legitimate.
2568
2569 Or we can scrap it. Barchecks should detect wrong durations, and
2570 skipTypesetting speeds it up a lot.
2571 */
2572
2573 void
2574 Lily_parser::beam_check (SCM dur)
2575 {
2576   Duration *d = unsmob_duration (dur);
2577   if (unsmob_music (last_beam_start_) && d->duration_log () <= 2)
2578     {
2579       Music *m = unsmob_music (last_beam_start_);
2580       m->origin ()->warning (_ ("Suspect duration found following this beam"));
2581     }
2582   last_beam_start_ = SCM_EOL;
2583 }
2584
2585
2586
2587
2588 /*
2589
2590 It is a little strange to have this function in this file, but
2591 otherwise, we have to import music classes into the lexer.
2592
2593 */
2594 int
2595 Lily_lexer::try_special_identifiers (SCM *destination, SCM sid)
2596 {
2597         if (scm_is_string (sid)) {
2598                 *destination = sid;
2599                 return STRING_IDENTIFIER;
2600         } else if (scm_is_number (sid)) {
2601                 *destination = sid;
2602                 return NUMBER_IDENTIFIER;
2603         } else if (unsmob_context_def (sid)) {
2604                 *destination = unsmob_context_def (sid)->clone_scm ();
2605                 return CONTEXT_DEF_IDENTIFIER;
2606         } else if (unsmob_score (sid)) {
2607                 Score *score = new Score (*unsmob_score (sid));
2608                 *destination = score->self_scm ();
2609                 return SCORE_IDENTIFIER;
2610         } else if (Music *mus = unsmob_music (sid)) {
2611                 mus = mus->clone ();
2612                 *destination = mus->self_scm ();
2613                 unsmob_music (*destination)->
2614                         set_property ("origin", make_input (last_input_));
2615                 return dynamic_cast<Event*> (mus)
2616                         ? EVENT_IDENTIFIER : MUSIC_IDENTIFIER;
2617         } else if (unsmob_duration (sid)) {
2618                 *destination = unsmob_duration (sid)->smobbed_copy ();
2619                 return DURATION_IDENTIFIER;
2620         } else if (unsmob_output_def (sid)) {
2621                 Output_def *p = unsmob_output_def (sid);
2622                 p = p->clone ();
2623
2624                 *destination = p->self_scm ();
2625                 return OUTPUT_DEF_IDENTIFIER;
2626         } else if (Text_interface::markup_p (sid)) {
2627                 *destination = sid;
2628                 return MARKUP_IDENTIFIER;
2629         }
2630
2631         return -1;
2632 }
2633
2634 Music *
2635 property_op_to_music (SCM op)
2636 {
2637         Music *m = 0;
2638         SCM tag = scm_car (op);
2639         SCM symbol = scm_cadr (op);
2640         SCM args = scm_cddr (op);
2641         SCM grob_val = SCM_UNDEFINED;
2642         SCM grob_sym = SCM_UNDEFINED;
2643         SCM val = SCM_UNDEFINED;
2644
2645         if (tag == ly_symbol2scm ("assign"))
2646                 {
2647                 m = MY_MAKE_MUSIC ("PropertySet");
2648                 val = scm_car (args);
2649                 }
2650         else if (tag == ly_symbol2scm ("unset"))
2651                 m = MY_MAKE_MUSIC ("PropertyUnset");
2652         else if (tag == ly_symbol2scm ("poppush")
2653                  || tag == ly_symbol2scm ("push"))
2654                 {
2655                 m = MY_MAKE_MUSIC ("OverrideProperty");
2656                 grob_sym = scm_car (args);
2657                 grob_val = scm_cadr (args);
2658                 }
2659         else if (tag == ly_symbol2scm ("pop")) {
2660                 m = MY_MAKE_MUSIC ("RevertProperty");
2661                 grob_sym = scm_car (args);
2662                 }
2663
2664         m->set_property ("symbol", symbol);
2665
2666         if (val != SCM_UNDEFINED)
2667                 m->set_property ("value", val);
2668         if (grob_val != SCM_UNDEFINED)
2669                 m->set_property ("grob-value", grob_val);
2670
2671         if (grob_sym != SCM_UNDEFINED)
2672                 {
2673                 bool itc = do_internal_type_checking_global;
2674                 /* UGH.
2675                 */
2676                 bool autobeam = ly_c_equal_p (symbol, ly_symbol2scm ("autoBeamSettings"));
2677                 if (autobeam)
2678                         do_internal_type_checking_global = false;
2679                 m->set_property ("grob-property", grob_sym);
2680                 if (autobeam)
2681                         do_internal_type_checking_global = itc;
2682                 }
2683
2684         if (tag == ly_symbol2scm ("poppush"))
2685                 m->set_property ("pop-first", SCM_BOOL_T);
2686
2687
2688         return m;
2689 }
2690
2691 Music*
2692 context_spec_music (SCM type, SCM id, Music *m, SCM ops)
2693 {
2694         Music *csm = MY_MAKE_MUSIC ("ContextSpeccedMusic");
2695
2696         csm->set_property ("element", m->self_scm ());
2697         scm_gc_unprotect_object (m->self_scm ());
2698
2699         csm->set_property ("context-type",
2700                 scm_is_symbol (type) ? type : scm_string_to_symbol (type));
2701         csm->set_property ("property-operations", ops);
2702
2703         if (scm_is_string (id))
2704                 csm->set_property ("context-id", id);
2705         return csm;
2706 }
2707
2708 SCM
2709 get_next_unique_context_id ()
2710 {
2711         return scm_makfrom0str ("$uniqueContextId");
2712 }
2713
2714
2715 SCM
2716 get_next_unique_lyrics_context_id ()
2717 {
2718         static int new_context_count;
2719         char s[128];
2720         snprintf (s, 1024, "uniqueContext%d", new_context_count++);
2721         return scm_makfrom0str (s);
2722 }