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 FIXME:
  14
  15    * The rules for who is protecting what are very shady.  Uniformise
  16      this.
  17
  18    * There are too many lexical modes?
  19 */
  20
  21 #include "config.hh"
  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 #undef _
  57 #if !HAVE_GETTEXT
  58 #define _(x) x
  59 #else
  60 #include <libintl.h>
  61 #define _(x) gettext (x)
  62 #endif
  63
  64 #define YYERROR_VERBOSE 1
  65
  66 #define YYPARSE_PARAM my_lily_parser
  67 #define YYLEX_PARAM my_lily_parser
  68 #define THIS\
  69         ((Lily_parser *) my_lily_parser)
  70
  71 #define yyerror THIS->parser_error
  72
  73 /* We use custom location type: Input objects */
  74 #define YYLTYPE Input
  75 #define YYLLOC_DEFAULT(Current,Rhs,N) \
  76         ((Current).set_location ((Rhs)[1], (Rhs)[N]))
  77
  78
  79 /* Add symbols to the TAGS field of a music object.  */
  80
  81 void
  82 tag_music (Music *m, SCM tag, Input ip)
  83 {
  84         SCM tags = m->get_property ("tags");
  85         if (scm_is_symbol (tag))
  86                 tags = scm_cons (tag, tags);
  87         else if (ly_c_list_p (tag))
  88                 tags = ly_append2 (tag, tags);
  89         else
  90                 ip.warning (_ ("tag must be symbol or list of symbols"));
  91
  92         m->set_property ("tags", tags);
  93 }
  94
  95 bool
  96 is_regular_identifier (SCM id)
  97 {
  98   String str = ly_scm2string (id);
  99   char const *s = str.to_str0 ();
 100
 101   bool v = true;
 102 #if 0
 103   isalpha (*s);
 104   s++;
 105 #endif
 106   while (*s && v)
 107    {
 108         v = v && isalnum (*s);
 109         s++;
 110    }
 111   return v;
 112 }
 113
 114
 115 SCM
 116 get_first_context_id (SCM type, Music *m)
 117 {
 118         SCM id = m->get_property ("context-id");
 119         if (SCM_BOOL_T == scm_equal_p (m->get_property ("context-type"), type)
 120             && scm_is_string (m->get_property ("context-id"))
 121             && scm_c_string_length (id) > 0)
 122         {
 123                 return id;
 124         }
 125         return SCM_EOL;
 126 }
 127
 128 SCM
 129 make_simple_markup (SCM a)
 130 {
 131         SCM simple = ly_lily_module_constant ("simple-markup");
 132         return scm_list_2 (simple, a);
 133 }
 134
 135 bool
 136 is_duration (int t)
 137 {
 138   return t && t == 1 << intlog2 (t);
 139 }
 140
 141 void
 142 set_music_properties (Music *p, SCM a)
 143 {
 144   for (SCM k = a; scm_is_pair (k); k = scm_cdr (k))
 145         p->internal_set_property (scm_caar (k), scm_cdar (k));
 146 }
 147
 148 SCM
 149 make_chord_step (int step, int alter)
 150 {
 151         if (step == 7)
 152                 alter += FLAT;
 153
 154         while (step < 0)
 155                 step += 7;
 156         Pitch m ((step -1) / 7, (step - 1) % 7, alter);
 157         return m.smobbed_copy ();
 158 }
 159
 160
 161 SCM
 162 make_chord (SCM pitch, SCM dur, SCM modification_list)
 163 {
 164         SCM chord_ctor = ly_lily_module_constant ("construct-chord");
 165         SCM ch = scm_call_3 (chord_ctor, pitch, dur, modification_list);
 166         scm_gc_protect_object (ch);
 167         return ch;
 168 }
 169
 170 /* Todo: actually also use apply iso. call too ...  */
 171 bool
 172 ly_input_procedure_p (SCM x)
 173 {
 174         return ly_c_procedure_p (x)
 175                 || (scm_is_pair (x) && ly_c_procedure_p (scm_car (x)));
 176 }
 177
 178 Music*
 179 set_property_music (SCM sym, SCM value)
 180 {
 181         Music *p = MY_MAKE_MUSIC ("PropertySet");
 182         p->set_property ("symbol", sym);
 183         p->set_property ("value", value);
 184         return p;
 185 }
 186
 187 Music*
 188 make_music_relative (Pitch start, Music *music)
 189 {
 190         Music *relative = MY_MAKE_MUSIC ("RelativeOctaveMusic");
 191         relative->set_property ("element", music->self_scm ());
 192
 193         Pitch last = music->to_relative_octave (start);
 194         if (lily_1_8_relative)
 195                 music->set_property ("last-pitch", last.smobbed_copy ());
 196         return relative;
 197 }
 198
 199 Music*
 200 make_lyric_combine_music (SCM name, Music *music)
 201 {
 202         Music *combine = MY_MAKE_MUSIC ("NewLyricCombineMusic");
 203         combine->set_property ("element", music->self_scm ());
 204         combine->set_property ("associated-context", name);
 205         return combine;
 206 }
 207
 208 %}
 209
 210 /* We use SCMs to do strings, because it saves us the trouble of
 211 deleting them.  Let's hope that a stack overflow doesnt trigger a move
 212 of the parse stack onto the heap. */
 213
 214 %left ADDLYRICS
 215
 216 %union {
 217         Book *book;
 218         Output_def *outputdef;
 219         SCM scm;
 220         String *string;
 221         Music *music;
 222         Score *score;
 223         int i;
 224 }
 225 %{
 226
 227 int
 228 yylex (YYSTYPE *s, YYLTYPE *l, void *v)
 229 {
 230         Lily_parser *pars = (Lily_parser*) v;
 231         Lily_lexer *lex = pars->lexer_;
 232
 233         lex->lexval = (void*) s;
 234         lex->lexloc = l;
 235         lex->prepare_for_next_token ();
 236         return lex->yylex ();
 237 }
 238
 239
 240 %}
 241
 242 %expect 1
 243
 244 /* One shift/reduce problem
 245
 246 1.  \repeat
 247         \repeat .. \alternative
 248
 249     \repeat { \repeat .. \alternative }
 250
 251 or
 252
 253     \repeat { \repeat } \alternative
 254 */
 255
 256
 257 %pure_parser
 258 %locations
 259
 260 /* The third option is an alias that will be used to display the
 261    syntax error.  Bison CVS now correctly handles backslash escapes.
 262
 263    FIXME: Bison needs to translate some of these, eg, STRING.
 264
 265 */
 266
 267 /* Keyword tokens with plain escaped name.  */
 268 %token ACCEPTS "\\accepts"
 269 %token ADDLYRICS "\\addlyrics"
 270 %token ADDQUOTE "\\addquote"
 271 %token ALIAS "\\alias"
 272 %token ALTERNATIVE "\\alternative"
 273 %token BAR "\\bar"
 274 %token BOOK "\book"
 275 %token CHANGE "\\change"
 276 %token CHORDMODE "\\chordmode"
 277 %token CHORDS "\\chords"
 278 %token CLEF "\\clef"
 279 %token CONSISTS "\\consists"
 280 %token CONTEXT "\\context"
 281 %token DEFAULT "\\default"
 282 %token DENIES "\\denies"
 283 %token DESCRIPTION "\\description"
 284 %token DRUMMODE "\\drummode"
 285 %token DRUMS "\\drums"
 286 %token FIGUREMODE "\\figuremode"
 287 %token FIGURES "\\figures"
 288 %token GROBDESCRIPTIONS "\\grobdescriptions"
 289 %token HEADER "\\header"
 290 %token INVALID "\\invalid"
 291 %token KEY "\\key"
 292 %token LAYOUT "\\layout"
 293 %token LYRICMODE "\\lyricmode"
 294 %token LYRICS "\\lyrics"
 295 %token LYRICSTO "\\lyricsto"
 296 %token MARK "\\mark"
 297 %token MARKUP "\\markup"
 298 %token MIDI "\\midi"
 299 %token NAME "\\name"
 300 %token NOTEMODE "\\notemode"
 301 %token OBJECTID "\\objectid"
 302 %token OCTAVE "\\octave"
 303 %token ONCE "\\once"
 304 %token OVERRIDE "\\override"
 305 %token PAPER "\\paper"
 306 %token PARTIAL "\\partial"
 307 %token RELATIVE "\\relative"
 308 %token REMOVE "\\remove"
 309 %token REPEAT "\\repeat"
 310 %token REST "\\rest"
 311 %token REVERT "\\revert"
 312 %token SCORE "\\score"
 313 %token SEQUENTIAL "\\sequential"
 314 %token SET "\\set"
 315 %token SIMULTANEOUS "\\simultaneous"
 316 %token SKIP "\\skip"
 317 %token TAG "\\tag"
 318 %token TEMPO "\\tempo"
 319 %token TIMES "\\times"
 320 %token TRANSPOSE "\\transpose"
 321 %token TRANSPOSITION "\\transposition"
 322 %token TYPE "\\type"
 323 %token UNSET "\\unset"
 324 %token WITH "\\with"
 325
 326 /* Keyword token exceptions.  */
 327 %token TIME_T "\\time"
 328 %token NEWCONTEXT "\\new"
 329
 330
 331 /* Other string tokens.  */
 332
 333 %token CHORD_BASS "/+"
 334 %token CHORD_CARET "^"
 335 %token CHORD_COLON ":"
 336 %token CHORD_MINUS "-"
 337 %token CHORD_SLASH "/"
 338 %token DOUBLE_ANGLE_CLOSE ">>"
 339 %token DOUBLE_ANGLE_OPEN "<<"
 340 %token E_BACKSLASH "\\"
 341 %token E_ANGLE_CLOSE "\\>"
 342 %token E_CHAR "\\C[haracter]"
 343 %token E_CLOSE "\\)"
 344 %token E_EXCLAMATION "\\!"
 345 %token E_BRACKET_OPEN "\\["
 346 %token E_OPEN "\\("
 347 %token E_BRACKET_CLOSE "\\]"
 348 %token E_ANGLE_OPEN "\\<"
 349 %token E_TILDE "\\~"
 350 %token EXTENDER "__"
 351 /*  These used at all?
 352   %token FIGURE_BRACKET_CLOSE
 353   %token FIGURE_BRACKET_OPEN
 354
 355 parser.yy:348.8-25: warning: symbol `"\\>"' used more than once as a literal string
 356 parser.yy:352.8-24: warning: symbol `"\\<"' used more than once as a literal string
 357
 358 */
 359 %token FIGURE_CLOSE /* "\\>" */
 360 %token FIGURE_OPEN /* "\\<" */
 361 %token FIGURE_SPACE "_"
 362 %token HYPHEN "--"
 363
 364 %token CHORDMODIFIERS
 365 %token COMMANDSPANREQUEST
 366 %token LYRIC_MARKUP
 367 %token MULTI_MEASURE_REST
 368 %token SCM_T
 369
 370
 371 %token <i> DIGIT
 372 %token <i> E_UNSIGNED
 373 %token <i> UNSIGNED
 374
 375 %token <id> IDENTIFIER
 376
 377 %token <scm> CHORDMODIFIER_PITCH
 378 %token <scm> CHORD_MODIFIER
 379 %token <scm> CONTEXT_DEF_IDENTIFIER
 380 %token <scm> DRUM_PITCH
 381 %token <scm> DURATION_IDENTIFIER
 382 %token <scm> EVENT_IDENTIFIER
 383 %token <scm> FRACTION
 384 %token <scm> LYRICS_STRING
 385 %token <scm> LYRIC_MARKUP_IDENTIFIER
 386 %token <scm> MARKUP_HEAD_EMPTY
 387 %token <scm> MARKUP_HEAD_LIST0
 388 %token <scm> MARKUP_HEAD_MARKUP0
 389 %token <scm> MARKUP_HEAD_MARKUP0_MARKUP1
 390 %token <scm> MARKUP_HEAD_SCM0
 391 %token <scm> MARKUP_HEAD_SCM0_MARKUP1
 392 %token <scm> MARKUP_HEAD_SCM0_SCM1
 393 %token <scm> MARKUP_HEAD_SCM0_SCM1_MARKUP2
 394 %token <scm> MARKUP_HEAD_SCM0_SCM1_SCM2
 395 %token <scm> MARKUP_IDENTIFIER
 396 %token <scm> MUSIC_FUNCTION
 397 %token <scm> MUSIC_FUNCTION_MARKUP
 398 %token <scm> MUSIC_FUNCTION_MARKUP_MARKUP
 399 %token <scm> MUSIC_FUNCTION_MARKUP_MARKUP_MUSIC
 400 %token <scm> MUSIC_FUNCTION_MARKUP_MUSIC
 401 %token <scm> MUSIC_FUNCTION_MARKUP_MUSIC_MUSIC
 402 %token <scm> MUSIC_FUNCTION_MUSIC
 403 %token <scm> MUSIC_FUNCTION_MUSIC_MUSIC
 404 %token <scm> MUSIC_FUNCTION_SCM
 405 %token <scm> MUSIC_FUNCTION_SCM_MUSIC
 406 %token <scm> MUSIC_FUNCTION_SCM_MUSIC_MUSIC
 407 %token <scm> MUSIC_FUNCTION_SCM_SCM
 408 %token <scm> MUSIC_FUNCTION_SCM_SCM_MUSIC
 409 %token <scm> MUSIC_IDENTIFIER
 410 %token <scm> NOTENAME_PITCH
 411 %token <scm> NUMBER_IDENTIFIER
 412 %token <scm> OUTPUT_DEF_IDENTIFIER
 413 %token <scm> REAL
 414 %token <scm> RESTNAME
 415 %token <scm> SCM_IDENTIFIER
 416 %token <scm> SCM_T
 417 %token <scm> SCORE_IDENTIFIER
 418 %token <scm> STRING
 419 %token <scm> STRING_IDENTIFIER
 420 %token <scm> TONICNAME_PITCH
 421
 422
 423 %type <book> book_block
 424 %type <book> book_body
 425
 426 %type <i> bare_int
 427 %type <i> bare_unsigned
 428 %type <i> bass_mod
 429 %type <i> dots
 430 %type <i> exclamations
 431 %type <i> optional_rest
 432 %type <i> questions
 433 %type <i> script_dir
 434 %type <i> sub_quotes
 435 %type <i> sup_quotes
 436 %type <i> tremolo_type
 437
 438 %type <music> Composite_music
 439 %type <music> Generic_prefix_music
 440 %type <music> Grouped_music_list
 441 %type <music> Music
 442 %type <music> Prefix_composite_music
 443 %type <music> Repeated_music
 444 %type <music> Sequential_music
 445 %type <music> Simple_music
 446 %type <music> Simultaneous_music
 447 %type <music> chord_body
 448 %type <music> chord_body_element
 449 %type <music> command_element
 450 %type <music> command_req
 451 %type <music> context_change
 452 %type <music> direction_less_event
 453 %type <music> direction_reqd_event
 454 %type <music> event_chord
 455 %type <music> gen_text_def
 456 %type <music> music_property_def
 457 %type <music> note_chord_element
 458 %type <music> post_event
 459 %type <music> re_rhythmed_music
 460 %type <music> relative_music
 461 %type <music> simple_element
 462 %type <music> string_number_event
 463 %type <music> tagged_post_event
 464 %type <music> tempo_event
 465 %type <music> toplevel_music
 466
 467 %type <outputdef> output_def_body
 468 %type <outputdef> output_def_head
 469 %type <outputdef> output_def
 470 %type <outputdef> paper_block
 471
 472 %type <scm> Alternative_music
 473 %type <scm> Generic_prefix_music_scm
 474 %type <scm> Music_list
 475 %type <scm> absolute_pitch
 476 %type <scm> assignment_id
 477 %type <scm> bare_number
 478 %type <scm> bass_figure
 479 %type <scm> bass_number
 480 %type <scm> br_bass_figure
 481 %type <scm> chord_body_elements
 482 %type <scm> chord_item
 483 %type <scm> chord_items
 484 %type <scm> chord_separator
 485 %type <scm> context_def_mod
 486 %type <scm> context_def_spec_block
 487 %type <scm> context_def_spec_body
 488 %type <scm> context_mod
 489 %type <scm> context_mod_list
 490 %type <scm> context_prop_spec
 491 %type <scm> direction_less_char
 492 %type <scm> duration_length
 493 %type <scm> embedded_scm
 494 %type <scm> figure_list
 495 %type <scm> figure_spec
 496 %type <scm> fraction
 497 %type <scm> full_markup
 498 %type <scm> identifier_init
 499 %type <scm> lilypond_header
 500 %type <scm> lilypond_header_body
 501 %type <scm> lyric_element
 502 %type <scm> lyric_markup
 503 %type <scm> markup
 504 %type <scm> markup_braced_list
 505 %type <scm> markup_braced_list_body
 506 %type <scm> markup_composed_list
 507 %type <scm> markup_head_1_item
 508 %type <scm> markup_head_1_list
 509 %type <scm> markup_list
 510 %type <scm> markup_top
 511 %type <scm> mode_changing_head
 512 %type <scm> mode_changing_head_with_context
 513 %type <scm> multiplied_duration
 514 %type <scm> new_chord
 515 %type <scm> new_lyrics
 516 %type <scm> number_expression
 517 %type <scm> number_factor
 518 %type <scm> number_term
 519 %type <scm> object_id_setting
 520 %type <scm> octave_check
 521 %type <scm> optional_context_mod
 522 %type <scm> optional_notemode_duration
 523 %type <scm> pitch
 524 %type <scm> pitch_also_in_chords
 525 %type <scm> post_events
 526 %type <scm> property_operation
 527 %type <scm> scalar
 528 %type <scm> script_abbreviation
 529 %type <scm> simple_markup
 530 %type <scm> simple_string
 531 %type <scm> steno_duration
 532 %type <scm> steno_pitch
 533 %type <scm> steno_tonic_pitch
 534 %type <scm> step_number
 535 %type <scm> step_numbers
 536 %type <scm> string
 537
 538 %type <score> score_block
 539 %type <score> score_body
 540
 541
 542 %left '-' '+'
 543
 544 /* We don't assign precedence to / and *, because we might need varied
 545 prec levels in different prods */
 546
 547 %left UNARY_MINUS
 548
 549 %%
 550
 551 lilypond:       /* empty */
 552         | lilypond toplevel_expression {
 553         }
 554         | lilypond assignment {
 555         }
 556         | lilypond error {
 557                 THIS->error_level_ = 1;
 558         }
 559         | lilypond INVALID      {
 560                 THIS->error_level_ = 1;
 561         }
 562         ;
 563
 564
 565 object_id_setting:
 566         OBJECTID STRING { $$ = $2; }
 567         ;
 568
 569 toplevel_expression:
 570         lilypond_header {
 571                 THIS->lexer_->set_identifier (ly_symbol2scm ("$globalheader"), $1);
 572         }
 573         | add_quote {
 574
 575         }
 576         | book_block {
 577                 Book *book = $1;
 578                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-book-handler");
 579                 scm_call_2 (proc, THIS->self_scm (), book->self_scm ());
 580                 scm_gc_unprotect_object (book->self_scm ());
 581         }
 582         | score_block {
 583                 Score *score = $1;
 584
 585                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-score-handler");
 586                 scm_call_2 (proc, THIS->self_scm (), score->self_scm ());
 587                 scm_gc_unprotect_object (score->self_scm ());
 588         }
 589         | toplevel_music {
 590                 Music *music = $1;
 591                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-music-handler");
 592                 scm_call_2 (proc, THIS->self_scm (), music->self_scm ());
 593                 scm_gc_unprotect_object (music->self_scm ());
 594         }
 595         | full_markup {
 596                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-text-handler");
 597                 scm_call_2 (proc, THIS->self_scm (), $1);
 598         }
 599         | output_def {
 600                 SCM id = SCM_EOL;
 601                 Output_def * od = $1;
 602
 603                 if ($1->c_variable ("is-paper") == SCM_BOOL_T)
 604                         id = ly_symbol2scm ("$defaultpaper");
 605                 else if ($1->c_variable ("is-midi") == SCM_BOOL_T)
 606                         id = ly_symbol2scm ("$defaultmidi");
 607                 else if ($1->c_variable ("is-layout") == SCM_BOOL_T)
 608                         id = ly_symbol2scm ("$defaultlayout");
 609
 610                 THIS->lexer_->set_identifier (id, od->self_scm ());
 611                 scm_gc_unprotect_object (od->self_scm ());
 612         }
 613         ;
 614
 615 toplevel_music:
 616         Composite_music {
 617         }
 618         ;
 619
 620 embedded_scm:
 621         SCM_T
 622         | SCM_IDENTIFIER
 623         ;
 624
 625
 626 lilypond_header_body:
 627         {
 628                 $$ = ly_make_anonymous_module (be_safe_global);
 629                 THIS->lexer_->add_scope ($$);
 630         }
 631         | lilypond_header_body assignment  {
 632
 633         }
 634         ;
 635
 636 lilypond_header:
 637         HEADER '{' lilypond_header_body '}'     {
 638                 $$ = THIS->lexer_->remove_scope ();
 639         }
 640         ;
 641
 642 /*
 643         DECLARATIONS
 644 */
 645 assignment_id:
 646         STRING          { $$ = $1; }
 647         | LYRICS_STRING { $$ = $1; }
 648         ;
 649
 650 assignment:
 651         assignment_id '=' identifier_init  {
 652                 if (! is_regular_identifier ($1))
 653                 {
 654                         @1.warning (_ ("identifier should have alphabetic characters only"));
 655                 }
 656
 657                 THIS->lexer_->set_identifier ($1, $3);
 658
 659 /*
 660  TODO: devise standard for protection in parser.
 661
 662   The parser stack lives on the C-stack, which means that
 663 all objects can be unprotected as soon as they're here.
 664
 665 */
 666         }
 667         | embedded_scm { }
 668         ;
 669
 670
 671 identifier_init:
 672         score_block {
 673                 $$ = $1->self_scm ();
 674                 scm_gc_unprotect_object ($$);
 675         }
 676         | output_def {
 677                 $$ = $1->self_scm ();
 678                 scm_gc_unprotect_object ($$);
 679         }
 680         | context_def_spec_block {
 681                 $$ = $1;
 682         }
 683         | Music  {
 684                 $$ = $1->self_scm ();
 685                 scm_gc_unprotect_object ($$);
 686         }
 687         | post_event {
 688                 $$ = $1->self_scm ();
 689                 scm_gc_unprotect_object ($$);
 690         }
 691         | number_expression {
 692                 $$ = $1;
 693         }
 694         | string {
 695                 $$ = $1;
 696         }
 697         | embedded_scm {
 698                 $$ = $1;
 699         }
 700         | full_markup {
 701                 $$ = $1;
 702         }
 703         | DIGIT {
 704                 $$ = scm_int2num ($1);
 705         }
 706         ;
 707
 708 context_def_spec_block:
 709         CONTEXT '{' context_def_spec_body '}'
 710                 {
 711                 $$ = $3;
 712         }
 713         ;
 714
 715 context_def_spec_body:
 716         /**/ {
 717                 $$ = Context_def::make_scm ();
 718                 unsmob_context_def ($$)->set_spot (@$);
 719         }
 720         | CONTEXT_DEF_IDENTIFIER {
 721                 $$ = $1;
 722                 unsmob_context_def ($$)->set_spot (@$);
 723         }
 724         | context_def_spec_body GROBDESCRIPTIONS embedded_scm {
 725                 Context_def*td = unsmob_context_def ($$);
 726
 727                 for (SCM p = $3; scm_is_pair (p); p = scm_cdr (p)) {
 728                         SCM tag = scm_caar (p);
 729
 730                         /* TODO: should make new tag "grob-definition" ? */
 731                         td->add_context_mod (scm_list_3 (ly_symbol2scm ("assign"),
 732                                                         tag, scm_cons (scm_cdar (p), SCM_EOL)));
 733                 }
 734         }
 735         | context_def_spec_body context_mod {
 736                 unsmob_context_def ($$)->add_context_mod ($2);
 737         }
 738         ;
 739
 740
 741
 742 book_block:
 743         BOOK '{' book_body '}'  {
 744                 $$ = $3;
 745         }
 746         ;
 747
 748 /* FIXME:
 749    * Use 'handlers' like for toplevel-* stuff?
 750    * grok \layout and \midi?  */
 751 book_body:
 752         {
 753                 $$ = new Book;
 754                 $$->set_spot (@$);
 755                 $$->paper_ = dynamic_cast<Output_def*> (unsmob_output_def (THIS->lexer_->lookup_identifier ("$defaultpaper"))->clone ());
 756                 scm_gc_unprotect_object ($$->paper_->self_scm ());
 757                 $$->header_ = THIS->lexer_->lookup_identifier ("$globalheader");
 758         }
 759         | book_body paper_block {
 760                 $$->paper_ = $2;
 761                 scm_gc_unprotect_object ($2->self_scm ());
 762         }
 763         | book_body score_block {
 764                 SCM s = $2->self_scm ();
 765                 $$->add_score (s);
 766                 scm_gc_unprotect_object (s);
 767         }
 768         | book_body full_markup {
 769                 $$->add_score ($2);
 770         }
 771         | book_body lilypond_header {
 772                 $$->header_ = $2;
 773         }
 774         | book_body error {
 775                 $$->paper_ = 0;
 776                 $$->scores_ = SCM_EOL;
 777         }
 778         | book_body object_id_setting {
 779                 $$->user_key_ = ly_scm2string ($2);
 780         }
 781         ;
 782
 783 score_block:
 784         SCORE '{' score_body '}'        {
 785                 $$ = $3;
 786         }
 787         ;
 788
 789 score_body:
 790         /**/    {
 791                 $$ = new Score;
 792                 $$->set_spot (@$);
 793         }
 794         | SCORE_IDENTIFIER {
 795                 $$ = new Score ( *unsmob_score ($1));
 796                 $$->set_spot (@$);
 797         }
 798         | score_body object_id_setting {
 799                 $$->user_key_ = ly_scm2string ($2);
 800         }
 801         | score_body Music {
 802                 SCM m = $2->self_scm ();
 803                 scm_gc_unprotect_object (m);
 804                 $$->set_music (m, THIS->self_scm ());
 805         }
 806         | score_body lilypond_header    {
 807                 $$->header_ = $2;
 808         }
 809         | score_body output_def {
 810                 if ($2->lookup_variable (ly_symbol2scm ("is-paper")) == SCM_BOOL_T)
 811                 {
 812                         THIS->parser_error (@2, _("\\paper cannot be used in \\score, use \\layout instead"));
 813
 814                 }
 815                 else
 816                 {
 817                         $$->defs_.push ($2);
 818                 }
 819                 scm_gc_unprotect_object ($2->self_scm ());
 820         }
 821         | score_body error {
 822                 $$->error_found_ = true;
 823         }
 824         ;
 825
 826
 827 /*
 828         OUTPUT DEF
 829 */
 830
 831 paper_block:
 832         output_def {
 833                 $$ = $1;
 834                 if ($$->lookup_variable (ly_symbol2scm ("is-paper")) != SCM_BOOL_T)
 835                 {
 836                         THIS->parser_error (@1, _ ("need \\paper for paper block"));
 837                         $$ = get_paper (THIS);
 838                 }
 839         }
 840         ;
 841
 842
 843 output_def:
 844         output_def_body '}' {
 845                 $$ = $1;
 846
 847                 THIS->lexer_->remove_scope ();
 848                 THIS->lexer_->pop_state ();
 849         }
 850         ;
 851
 852 output_def_head:
 853         PAPER {
 854                 $$ = get_paper (THIS);
 855                 $$->input_origin_ = @$;
 856                 THIS->lexer_->add_scope ($$->scope_);
 857         }
 858         | MIDI    {
 859                 Output_def *p = get_midi (THIS);
 860                 $$ = p;
 861                 THIS->lexer_->add_scope (p->scope_);
 862         }
 863         | LAYOUT        {
 864                 Output_def *p = get_layout (THIS);
 865
 866                 THIS->lexer_->add_scope (p->scope_);
 867                 $$ = p;
 868         }
 869         ;
 870
 871
 872 output_def_body:
 873         output_def_head '{' {
 874                 $$ = $1;
 875                 $$->input_origin_.set_spot (@$);
 876                 THIS->lexer_->push_initial_state ();
 877         }
 878         | output_def_head '{' OUTPUT_DEF_IDENTIFIER     {
 879                 scm_gc_unprotect_object ($1->self_scm ());
 880                 Output_def *o = unsmob_output_def ($3);
 881                 o->input_origin_.set_spot (@$);
 882                 $$ = o;
 883                 THIS->lexer_->remove_scope ();
 884                 THIS->lexer_->add_scope (o->scope_);
 885                 THIS->lexer_->push_initial_state ();
 886         }
 887         | output_def_body assignment  {
 888
 889         }
 890         | output_def_body context_def_spec_block        {
 891                 assign_context_def ($$, $2);
 892         }
 893         | output_def_body tempo_event  {
 894                 /*
 895                         junk this ? there already is tempo stuff in
 896                         music.
 897                 */
 898                 int m = scm_to_int ($2->get_property ("metronome-count"));
 899                 Duration *d = unsmob_duration ($2->get_property ("tempo-unit"));
 900                 set_tempo ($$, d->get_length (), m);
 901                 scm_gc_unprotect_object ($2->self_scm ());
 902         }
 903         | output_def_body error {
 904
 905         }
 906         ;
 907
 908 tempo_event:
 909         TEMPO steno_duration '=' bare_unsigned  {
 910                 $$ = MY_MAKE_MUSIC ("MetronomeChangeEvent");
 911                 $$->set_property ("tempo-unit", $2);
 912                 $$->set_property ("metronome-count", scm_int2num ( $4));
 913         }
 914         ;
 915
 916 /*
 917 The representation of a  list is the
 918
 919   (LIST . LAST-CONS)
 920
 921  to have efficient append.  */
 922
 923 Music_list:
 924         /* empty */ {
 925                 $$ = scm_cons (SCM_EOL, SCM_EOL);
 926         }
 927         | Music_list Music {
 928                 SCM s = $$;
 929                 SCM c = scm_cons ($2->self_scm (), SCM_EOL);
 930                 scm_gc_unprotect_object ($2->self_scm ()); /* UGH */
 931
 932                 if (scm_is_pair (scm_cdr (s)))
 933                         scm_set_cdr_x (scm_cdr (s), c); /* append */
 934                 else
 935                         scm_set_car_x (s, c); /* set first cons */
 936                 scm_set_cdr_x (s, c);  /* remember last cell */
 937         }
 938         | Music_list embedded_scm {
 939
 940         }
 941         | Music_list error {
 942                 Music * m = MY_MAKE_MUSIC("Music");
 943                 // ugh. code dup
 944                 m->set_property ("error-found", SCM_BOOL_T);
 945                 SCM s = $$;
 946                 SCM c = scm_cons (m->self_scm (), SCM_EOL);
 947                 scm_gc_unprotect_object (m->self_scm ()); /* UGH */
 948
 949                 if (scm_is_pair (scm_cdr (s)))
 950                         scm_set_cdr_x (scm_cdr (s), c); /* append */
 951                 else
 952                         scm_set_car_x (s, c); /* set first cons */
 953                 scm_set_cdr_x (s, c);  /* remember last cell */
 954         }
 955         ;
 956
 957 Music:
 958         Simple_music
 959         | Composite_music
 960         ;
 961
 962 Alternative_music:
 963         /* empty */ {
 964                 $$ = SCM_EOL;
 965         }
 966         | ALTERNATIVE '{' Music_list '}' {
 967                 $$ = $3;
 968         }
 969         ;
 970
 971
 972 Repeated_music:
 973         REPEAT simple_string bare_unsigned Music Alternative_music
 974         {
 975                 Music *beg = $4;
 976                 int times = $3;
 977                 SCM alts = scm_is_pair ($5) ? scm_car ($5) : SCM_EOL;
 978                 if (times < scm_ilength (alts)) {
 979                   unsmob_music (scm_car (alts))
 980                     ->origin ()->warning (
 981                     _ ("more alternatives than repeats"));
 982                     warning ("junking excess alternatives");
 983                   alts = ly_truncate_list (times, alts);
 984                 }
 985
 986
 987                 SCM proc = ly_lily_module_constant ("make-repeated-music");
 988
 989                 SCM mus = scm_call_1 (proc, $2);
 990                 scm_gc_protect_object (mus); // UGH.
 991                 Music *r = unsmob_music (mus);
 992                 if (beg)
 993                         {
 994                         r-> set_property ("element", beg->self_scm ());
 995                         scm_gc_unprotect_object (beg->self_scm ());
 996                         }
 997                 r->set_property ("repeat-count", scm_int2num (times >? 1));
 998
 999                 r-> set_property ("elements",alts);
1000                 if (ly_c_equal_p ($2, scm_makfrom0str ("tremolo"))) {
1001                         /*
1002                         TODO: move this code to Scheme.
1003                         */
1004
1005                         /* we cannot get durations and other stuff
1006                            correct down the line,
1007                            so we have to add to the duration log here. */
1008                         SCM func = ly_lily_module_constant ("shift-duration-log");
1009
1010                         int dots = ($3 % 3) ? 0 : 1;
1011                         int shift = -intlog2 ((dots) ? ($3*2/3) : $3);
1012
1013
1014                         if ($4->is_mus_type ("sequential-music"))
1015                         {
1016                                 int list_len = scm_ilength ($4->get_property ("elements"));
1017                                 if (list_len != 2)
1018                                         $4->origin ()->warning (_f ("expect 2 elements for Chord tremolo, found %d", list_len));
1019                                 shift -= 1;
1020                                 r->compress (Moment (Rational (1, list_len)));
1021                         }
1022                         scm_call_3 (func, r->self_scm (), scm_int2num (shift), scm_int2num (dots));
1023
1024                 }
1025                 r->set_spot (*$4->origin ());
1026
1027                 $$ = r;
1028         }
1029         ;
1030
1031 Sequential_music:
1032         SEQUENTIAL '{' Music_list '}'           {
1033                 $$ = MY_MAKE_MUSIC ("SequentialMusic");
1034                 $$->set_property ("elements", scm_car ($3));
1035                 $$->set_spot (@$);
1036         }
1037         | '{' Music_list '}'            {
1038                 $$ = MY_MAKE_MUSIC ("SequentialMusic");
1039                 $$->set_property ("elements", scm_car ($2));
1040                 $$->set_spot (@$);
1041         }
1042         ;
1043
1044 Simultaneous_music:
1045         SIMULTANEOUS '{' Music_list '}'{
1046                 $$ = MY_MAKE_MUSIC ("SimultaneousMusic");
1047                 $$->set_property ("elements", scm_car ($3));
1048                 $$->set_spot (@$);
1049
1050         }
1051         | simul_open Music_list simul_close     {
1052                 $$ = MY_MAKE_MUSIC ("SimultaneousMusic");
1053                 $$->set_property ("elements", scm_car ($2));
1054                 $$->set_spot (@$);
1055         }
1056         ;
1057
1058 Simple_music:
1059         event_chord             { $$ = $1; }
1060         | MUSIC_IDENTIFIER {
1061                 $$ = unsmob_music ($1);
1062         }
1063         | music_property_def
1064         | context_change
1065         ;
1066
1067
1068 optional_context_mod:
1069         /**/ { $$ = SCM_EOL; }
1070         | WITH { THIS->lexer_->push_initial_state (); }
1071         '{' context_mod_list '}'
1072         {
1073                 THIS->lexer_->pop_state ();
1074                 $$ = $4;
1075         }
1076         ;
1077
1078 context_mod_list:
1079         /* */  { $$ = SCM_EOL; }
1080         | context_mod_list context_mod  {
1081                  $$ = scm_cons ($2, $1);
1082         }
1083         ;
1084
1085
1086 Composite_music:
1087         Prefix_composite_music { $$ = $1; }
1088         | Grouped_music_list { $$ = $1; }
1089         ;
1090
1091 Grouped_music_list:
1092         Simultaneous_music              { $$ = $1; }
1093         | Sequential_music              { $$ = $1; }
1094         ;
1095
1096 Generic_prefix_music_scm:
1097         MUSIC_FUNCTION {
1098                 $$ = scm_list_2 ($1, make_input (@$));
1099         }
1100         | MUSIC_FUNCTION_SCM embedded_scm {
1101                 $$ = scm_list_3 ($1, make_input (@$), $2);
1102         }
1103         | MUSIC_FUNCTION_MARKUP full_markup {
1104                 $$ = scm_list_3 ($1, make_input (@$), $2);
1105         }
1106         | MUSIC_FUNCTION_MUSIC Music {
1107                 $$ = scm_list_3 ($1, make_input (@$), $2->self_scm ());
1108                 scm_gc_unprotect_object ($2->self_scm ());
1109         }
1110         | MUSIC_FUNCTION_SCM_MUSIC embedded_scm Music {
1111                 $$ = scm_list_4 ($1, make_input (@$), $2, $3->self_scm ());
1112                 scm_gc_unprotect_object ($3->self_scm ());
1113         }
1114         | MUSIC_FUNCTION_SCM_SCM embedded_scm embedded_scm {
1115                 $$ = scm_list_4 ($1, make_input (@$), $2, $3);
1116         }
1117         | MUSIC_FUNCTION_SCM_SCM_MUSIC embedded_scm embedded_scm Music {
1118                 $$ = scm_list_5 ($1, make_input (@$), $2, $3, $4->self_scm ());
1119         }
1120         | MUSIC_FUNCTION_MARKUP_MUSIC full_markup Music {
1121                 $$ = scm_list_4 ($1, make_input (@$), $2, $3->self_scm ());
1122                 scm_gc_unprotect_object ($3->self_scm ());
1123         }
1124         | MUSIC_FUNCTION_MARKUP_MARKUP full_markup full_markup {
1125                 $$ = scm_list_4 ($1, make_input (@$), $2, $3);
1126         }
1127         | MUSIC_FUNCTION_MUSIC_MUSIC Music Music {
1128                 $$ = scm_list_4 ($1, make_input (@$), $2->self_scm (), $3->self_scm ());
1129                 scm_gc_unprotect_object ($2->self_scm ());
1130                 scm_gc_unprotect_object ($3->self_scm ());
1131         }
1132         | MUSIC_FUNCTION_SCM_MUSIC_MUSIC embedded_scm Music Music {
1133                 $$ = scm_list_5 ($1, make_input (@$), $2, $3->self_scm (), $4->self_scm ());
1134                 scm_gc_unprotect_object ($4->self_scm ());
1135                 scm_gc_unprotect_object ($3->self_scm ());
1136         }
1137         | MUSIC_FUNCTION_MARKUP_MUSIC_MUSIC full_markup Music Music {
1138                 $$ = scm_list_5 ($1, make_input (@$), $2, $3->self_scm (), $4->self_scm ());
1139                 scm_gc_unprotect_object ($3->self_scm ());
1140                 scm_gc_unprotect_object ($4->self_scm ());
1141         }
1142         ;
1143
1144 Generic_prefix_music:
1145         Generic_prefix_music_scm {
1146                 SCM func = scm_car ($1);
1147                 Input *loc = unsmob_input (scm_cadr ($1));
1148                 SCM args = scm_cddr ($1);
1149                 SCM sig = scm_object_property (func, ly_symbol2scm ("music-function-signature"));
1150
1151                 SCM type_check_proc = ly_lily_module_constant ("type-check-list");
1152                 bool ok  = true;
1153
1154                 if (!to_boolean (scm_call_3  (type_check_proc, scm_cadr ($1), sig, args)))
1155                 {
1156                         THIS->error_level_ = 1;
1157                         ok = false;
1158                 }
1159
1160                 SCM m = SCM_EOL;
1161                 if (ok)
1162                         m = scm_apply_0 (func, scm_cons (THIS->self_scm(),
1163                                                          scm_cdr ($1)));
1164
1165                 if (unsmob_music (m))
1166                         {
1167                         $$ = unsmob_music (m);
1168                         scm_gc_protect_object (m);
1169                         }
1170                 else
1171                         {
1172                         if (ok)
1173                                 loc->error (_ ("music head function must return Music object"));
1174                         $$ = MY_MAKE_MUSIC ("Music");
1175                         }
1176                 $$->set_spot (*loc);
1177         }
1178         ;
1179
1180
1181 Prefix_composite_music:
1182         Generic_prefix_music {
1183                 $$ = $1;
1184         }
1185         | CONTEXT simple_string '=' simple_string optional_context_mod Music {
1186                 $$ = context_spec_music ($2, $4, $6, $5);
1187
1188         }
1189         | CONTEXT simple_string optional_context_mod Music {
1190                 $$ = context_spec_music ($2, SCM_UNDEFINED, $4, $3);
1191         }
1192         | NEWCONTEXT simple_string optional_context_mod Music {
1193                 $$ = context_spec_music ($2, get_next_unique_context_id (), $4,
1194                         $3);
1195         }
1196
1197         | TIMES fraction Music
1198
1199         {
1200                 int n = scm_to_int (scm_car ($2)); int d = scm_to_int (scm_cdr ($2));
1201                 Music *mp = $3;
1202
1203                 $$= MY_MAKE_MUSIC ("TimeScaledMusic");
1204                 $$->set_spot (@$);
1205
1206                 $$->set_property ("element", mp->self_scm ());
1207                 scm_gc_unprotect_object (mp->self_scm ());
1208                 $$->set_property ("numerator", scm_int2num (n));
1209                 $$->set_property ("denominator", scm_int2num (d));
1210                 $$->compress (Moment (Rational (n,d)));
1211
1212         }
1213         | Repeated_music                { $$ = $1; }
1214         | TRANSPOSE pitch_also_in_chords pitch_also_in_chords Music {
1215                 $$ = MY_MAKE_MUSIC ("TransposedMusic");
1216                 Music *p = $4;
1217                 Pitch from = *unsmob_pitch ($2);
1218                 Pitch to = *unsmob_pitch ($3);
1219
1220                 p->transpose (pitch_interval (from, to));
1221                 $$->set_property ("element", p->self_scm ());
1222                 scm_gc_unprotect_object (p->self_scm ());
1223         }
1224         | mode_changing_head Grouped_music_list {
1225                 if ($1 == ly_symbol2scm ("chords"))
1226                 {
1227                   Music *chm = MY_MAKE_MUSIC ("UnrelativableMusic");
1228                   chm->set_property ("element", $2->self_scm ());
1229                   $$ = chm;
1230                   scm_gc_unprotect_object ($2->self_scm ());
1231                 }
1232                 else
1233                 {
1234                   $$ = $2;
1235                 }
1236                 THIS->lexer_->pop_state ();
1237         }
1238         | mode_changing_head_with_context optional_context_mod Grouped_music_list {
1239                 $$ = context_spec_music ($1, get_next_unique_context_id (),
1240                                          $3, $2);
1241                 if ($1 == ly_symbol2scm ("ChordNames"))
1242                 {
1243                   Music *chm = MY_MAKE_MUSIC ("UnrelativableMusic");
1244                   chm->set_property ("element", $$->self_scm ());
1245                   scm_gc_unprotect_object ($$->self_scm ());
1246                   $$ = chm;
1247                 }
1248                 THIS->lexer_->pop_state ();
1249         }
1250         | relative_music        { $$ = $1; }
1251         | re_rhythmed_music     { $$ = $1; }
1252         | TAG embedded_scm Music {
1253                 tag_music ($3, $2, @$);
1254                 $$ = $3;
1255         }
1256         ;
1257
1258 mode_changing_head:
1259         NOTEMODE {
1260                 SCM nn = THIS->lexer_->lookup_identifier ("pitchnames");
1261                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1262
1263                 $$ = ly_symbol2scm ("notes");
1264         }
1265         | DRUMMODE
1266                 {
1267                 SCM nn = THIS->lexer_->lookup_identifier ("drumPitchNames");
1268                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1269
1270                 $$ = ly_symbol2scm ("drums");
1271         }
1272         | FIGUREMODE {
1273                 THIS->lexer_->push_figuredbass_state ();
1274
1275                 $$ = ly_symbol2scm ("figures");
1276         }
1277         | CHORDMODE {
1278                 SCM nn = THIS->lexer_->lookup_identifier ("chordmodifiers");
1279                 THIS->lexer_->chordmodifier_tab_ = alist_to_hashq (nn);
1280                 nn = THIS->lexer_->lookup_identifier ("pitchnames");
1281                 THIS->lexer_->push_chord_state (alist_to_hashq (nn));
1282                 $$ = ly_symbol2scm ("chords");
1283
1284         }
1285         | LYRICMODE
1286                 { THIS->lexer_->push_lyric_state ();
1287                 $$ = ly_symbol2scm ("lyrics");
1288         }
1289         ;
1290
1291 mode_changing_head_with_context:
1292         DRUMS {
1293                 SCM nn = THIS->lexer_->lookup_identifier ("drumPitchNames");
1294                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1295
1296                 $$ = ly_symbol2scm ("DrumStaff");
1297         }
1298         | FIGURES {
1299                 THIS->lexer_->push_figuredbass_state ();
1300
1301                 $$ = ly_symbol2scm ("FiguredBass");
1302         }
1303         | CHORDS {
1304                 SCM nn = THIS->lexer_->lookup_identifier ("chordmodifiers");
1305                 THIS->lexer_->chordmodifier_tab_ = alist_to_hashq (nn);
1306                 nn = THIS->lexer_->lookup_identifier ("pitchnames");
1307                 THIS->lexer_->push_chord_state (alist_to_hashq (nn));
1308                 $$ = ly_symbol2scm ("ChordNames");
1309         }
1310         | LYRICS
1311                 { THIS->lexer_->push_lyric_state ();
1312                 $$ = ly_symbol2scm ("Lyrics");
1313         }
1314         ;
1315
1316
1317 relative_music:
1318         RELATIVE absolute_pitch Music {
1319                 Music *m = $3;
1320                 Pitch start = *unsmob_pitch ($2);
1321                 $$ = make_music_relative (start, m);
1322                 scm_gc_unprotect_object (m->self_scm ());
1323         }
1324         | RELATIVE Composite_music {
1325                 Music *m = $2;
1326
1327                 Pitch middle_c (0, 0, 0);
1328                 $$ = make_music_relative (middle_c, m);
1329                 scm_gc_unprotect_object (m->self_scm ());
1330         }
1331         ;
1332
1333 new_lyrics:
1334         ADDLYRICS { THIS->lexer_->push_lyric_state (); }
1335         /*cont */
1336         Grouped_music_list {
1337         /* Can also use Music at the expensive of two S/Rs similar to
1338            \repeat \alternative */
1339                 THIS->lexer_->pop_state ();
1340
1341                 $$ = scm_cons ($3->self_scm (), SCM_EOL);
1342         }
1343         | new_lyrics ADDLYRICS {
1344                 THIS->lexer_->push_lyric_state ();
1345         } Grouped_music_list {
1346                 THIS->lexer_->pop_state ();
1347                 $$ = scm_cons ($4->self_scm (), $1);
1348         }
1349         ;
1350
1351 re_rhythmed_music:
1352         Grouped_music_list new_lyrics {
1353                 Music * voice = $1;
1354                 SCM name = get_first_context_id (scm_makfrom0str ("Voice"), voice);
1355                 if (!scm_is_string (name))
1356                 {
1357                         name = get_next_unique_lyrics_context_id ();
1358                         voice = context_spec_music (scm_makfrom0str ("Voice"),
1359                                                     name,
1360                                                     voice, SCM_EOL);
1361                 }
1362
1363                 SCM context = scm_makfrom0str ("Lyrics");
1364                 Music *all = MY_MAKE_MUSIC ("SimultaneousMusic");
1365
1366                 SCM lst = SCM_EOL;
1367                 for (SCM s = $2; scm_is_pair (s); s = scm_cdr (s))
1368                 {
1369                         Music *music = unsmob_music (scm_car (s));
1370                         Music *com = make_lyric_combine_music (name, music);
1371                         Music *csm = context_spec_music (context,
1372                                 get_next_unique_context_id (), com, SCM_EOL);
1373                         lst = scm_cons (csm->self_scm (), lst);
1374                 }
1375                 all->set_property ("elements", scm_cons (voice->self_scm (),
1376                         lst));
1377                 $$ = all;
1378                 scm_gc_unprotect_object (voice->self_scm ());
1379         }
1380         | LYRICSTO simple_string {
1381                 THIS->lexer_->push_lyric_state ();
1382         } Music {
1383                 THIS->lexer_->pop_state ();
1384                 Music *music = $4;
1385                 SCM name = $2;
1386                 $$ = make_lyric_combine_music (name, music);
1387                 scm_gc_unprotect_object (music->self_scm ());
1388         }
1389         ;
1390
1391 context_change:
1392         CHANGE STRING '=' STRING  {
1393                 Music*t = MY_MAKE_MUSIC ("ContextChange");
1394                 t-> set_property ("change-to-type", scm_string_to_symbol ($2));
1395                 t-> set_property ("change-to-id", $4);
1396
1397                 $$ = t;
1398                 $$->set_spot (@$);
1399         }
1400         ;
1401
1402 property_operation:
1403         STRING '=' scalar {
1404                 $$ = scm_list_3 (ly_symbol2scm ("assign"),
1405                         scm_string_to_symbol ($1), $3);
1406         }
1407         | UNSET simple_string {
1408                 $$ = scm_list_2 (ly_symbol2scm ("unset"),
1409                         scm_string_to_symbol ($2));
1410         }
1411         | OVERRIDE simple_string embedded_scm '=' embedded_scm {
1412                 $$ = scm_list_4 (ly_symbol2scm ("push"),
1413                         scm_string_to_symbol ($2), $3, $5);
1414         }
1415         | REVERT simple_string embedded_scm {
1416                 $$ = scm_list_3 (ly_symbol2scm ("pop"),
1417                         scm_string_to_symbol ($2), $3);
1418         }
1419         ;
1420
1421 context_def_mod:
1422         CONSISTS { $$ = ly_symbol2scm ("consists"); }
1423         | REMOVE { $$ = ly_symbol2scm ("remove"); }
1424
1425         | ACCEPTS { $$ = ly_symbol2scm ("accepts"); }
1426         | DENIES { $$ = ly_symbol2scm ("denies"); }
1427
1428         | ALIAS { $$ = ly_symbol2scm ("alias"); }
1429         | TYPE { $$ = ly_symbol2scm ("translator-type"); }
1430         | DESCRIPTION { $$ = ly_symbol2scm ("description"); }
1431         | NAME { $$ = ly_symbol2scm ("context-name"); }
1432         ;
1433
1434 context_mod:
1435         property_operation { $$ = $1; }
1436         | context_def_mod STRING {
1437                 $$ = scm_list_2 ($1, $2);
1438         }
1439         ;
1440
1441 context_prop_spec:
1442         simple_string {
1443                 if (!is_regular_identifier ($1))
1444                 {
1445                         @$.error (_("Grob name should be alphanumeric"));
1446                 }
1447
1448                 $$ = scm_list_2 (ly_symbol2scm ("Bottom"),
1449                         scm_string_to_symbol ($1));
1450         }
1451         | simple_string '.' simple_string {
1452                 $$ = scm_list_2 (scm_string_to_symbol ($1),
1453                         scm_string_to_symbol ($3));
1454         }
1455         ;
1456
1457 music_property_def:
1458         OVERRIDE context_prop_spec embedded_scm '=' scalar {
1459                 $$ = property_op_to_music (scm_list_4 (
1460                         ly_symbol2scm ("poppush"),
1461                         scm_cadr ($2),
1462                         $3, $5));
1463                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1464         }
1465         | REVERT context_prop_spec embedded_scm {
1466                 $$ = property_op_to_music (scm_list_3 (
1467                         ly_symbol2scm ("pop"),
1468                         scm_cadr ($2),
1469                         $3));
1470
1471                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1472         }
1473         | SET context_prop_spec '=' scalar {
1474                 $$ = property_op_to_music (scm_list_3 (
1475                         ly_symbol2scm ("assign"),
1476                         scm_cadr ($2),
1477                         $4));
1478                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1479         }
1480         | UNSET context_prop_spec {
1481                 $$ = property_op_to_music (scm_list_2 (
1482                         ly_symbol2scm ("unset"),
1483                         scm_cadr ($2)));
1484                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1485         }
1486         | ONCE music_property_def {
1487                 SCM e = $2->get_property ("element");
1488                 unsmob_music (e)->set_property ("once", SCM_BOOL_T);
1489                 $$ = $2;
1490
1491         }
1492         ;
1493
1494
1495 string:
1496         STRING {
1497                 $$ = $1;
1498         }
1499         | STRING_IDENTIFIER {
1500                 $$ = $1;
1501         }
1502         | string '+' string {
1503                 $$ = scm_string_append (scm_list_2 ($1, $3));
1504         }
1505         ;
1506
1507 simple_string: STRING {
1508                 $$ = $1;
1509         }
1510         | LYRICS_STRING {
1511                 $$ = $1;
1512         }
1513         ;
1514
1515 scalar: string {
1516                 $$ = $1;
1517         }
1518         | LYRICS_STRING {
1519                 $$ = $1;
1520         }
1521         | bare_int {
1522                 $$ = scm_int2num ($1);
1523         }
1524         | embedded_scm {
1525                 $$ = $1;
1526         }
1527         | full_markup {
1528                 $$ = $1;
1529         }
1530         | DIGIT {
1531                 $$ = scm_int2num ($1);
1532         }
1533         ;
1534
1535 /*
1536
1537 pre_events doesn't contain anything. It is a trick:
1538
1539 Adding pre_events to the simple_element
1540 makes the choice between
1541
1542   string:  STRING
1543
1544 and
1545
1546   simple_element: STRING
1547
1548 a single shift/reduction conflict.
1549
1550 nevertheless, this is not very clean, and we should find a different
1551 solution.
1552
1553 */
1554 pre_events: /* empty */
1555         ;
1556
1557 event_chord:
1558         pre_events simple_element post_events   {
1559                 SCM elts = $2-> get_property ("elements");
1560
1561                 elts = ly_append2 (elts, scm_reverse_x ($3, SCM_EOL));
1562
1563                 $2->set_property ("elements", elts);
1564                 /* why is this giving wrong start location? -ns
1565                  * $2->set_spot (@$); */
1566                 Input i;
1567                 i.set_location (@2, @3);
1568                 $2->set_spot (i);
1569                 $$ = $2;
1570         }
1571         | command_element
1572         | note_chord_element
1573         ;
1574
1575
1576 note_chord_element:
1577         chord_body optional_notemode_duration post_events
1578         {
1579                 SCM dur = unsmob_duration ($2)->smobbed_copy ();
1580                 SCM es = $1->get_property ("elements");
1581                 SCM postevs = scm_reverse_x ($3, SCM_EOL);
1582
1583                 for (SCM s = es; scm_is_pair (s); s = scm_cdr (s))
1584                   unsmob_music (scm_car (s))->set_property ("duration", dur);
1585                 es = ly_append2 (es, postevs);
1586
1587                 $1-> set_property ("elements", es);
1588                 $1->set_spot (@$);
1589                 $$ = $1;
1590         }
1591         ;
1592
1593 chord_open: '<'
1594         ;
1595
1596 chord_close: '>'
1597         ;
1598
1599 simul_open: DOUBLE_ANGLE_OPEN
1600         ;
1601
1602 simul_close: DOUBLE_ANGLE_CLOSE
1603         ;
1604
1605 chord_body:
1606         chord_open chord_body_elements chord_close
1607         {
1608                 $$ = MY_MAKE_MUSIC ("EventChord");
1609                 $$->set_spot (@$);
1610                 $$->set_property ("elements",
1611                         scm_reverse_x ($2, SCM_EOL));
1612         }
1613         ;
1614
1615 chord_body_elements:
1616         /* empty */             { $$ = SCM_EOL; }
1617         | chord_body_elements chord_body_element {
1618                 $$ = scm_cons ($2->self_scm (), $1);
1619                 scm_gc_unprotect_object ($2->self_scm ());
1620         }
1621         ;
1622
1623 chord_body_element:
1624         pitch exclamations questions octave_check post_events
1625         {
1626                 int q = $3;
1627                 int ex = $2;
1628                 SCM check = $4;
1629                 SCM post = $5;
1630
1631                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
1632                 n->set_property ("pitch", $1);
1633                 n->set_spot (@$);
1634                 if (q % 2)
1635                         n->set_property ("cautionary", SCM_BOOL_T);
1636                 if (ex % 2 || q % 2)
1637                         n->set_property ("force-accidental", SCM_BOOL_T);
1638
1639                 if (scm_is_pair (post)) {
1640                         SCM arts = scm_reverse_x (post, SCM_EOL);
1641                         n->set_property ("articulations", arts);
1642                 }
1643                 if (scm_is_number (check))
1644                 {
1645                         int q = scm_to_int (check);
1646                         n->set_property ("absolute-octave", scm_int2num (q-1));
1647                 }
1648
1649
1650                 $$ = n;
1651         }
1652         | DRUM_PITCH post_events {
1653                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
1654                 n->set_property ("duration", $2);
1655                 n->set_property ("drum-type", $1);
1656                 n->set_spot (@$);
1657
1658                 if (scm_is_pair ($2)) {
1659                         SCM arts = scm_reverse_x ($2, SCM_EOL);
1660                         n->set_property ("articulations", arts);
1661                 }
1662                 $$ = n;
1663         }
1664         ;
1665
1666 add_quote:
1667         ADDQUOTE string Music {
1668                 SCM adder = ly_lily_module_constant ("add-quotable");
1669
1670                 scm_call_2 (adder, $2, $3->self_scm ());
1671                 scm_gc_unprotect_object ($3->self_scm ());
1672         }
1673         ;
1674
1675 command_element:
1676         command_req {
1677                 $$ = MY_MAKE_MUSIC ("EventChord");
1678                 $$->set_property ("elements", scm_cons ($1->self_scm (), SCM_EOL));
1679                 scm_gc_unprotect_object ($1->self_scm ());
1680
1681                 $$-> set_spot (@$);
1682                 $1-> set_spot (@$);
1683         }
1684         | SKIP duration_length {
1685                 Music *skip = MY_MAKE_MUSIC ("SkipMusic");
1686                 skip->set_property ("duration", $2);
1687                 skip->set_spot (@$);
1688                 $$ = skip;
1689         }
1690         | OCTAVE pitch {
1691                 Music *m = MY_MAKE_MUSIC ("RelativeOctaveCheck");
1692                 $$ = m;
1693                 $$->set_spot (@$);
1694                 $$->set_property ("pitch", $2);
1695         }
1696         | E_BRACKET_OPEN {
1697                 Music *m = MY_MAKE_MUSIC ("LigatureEvent");
1698                 m->set_property ("span-direction", scm_int2num (START));
1699                 m->set_spot (@$);
1700
1701                 $$ = MY_MAKE_MUSIC ("EventChord");
1702                 $$->set_property ("elements", scm_cons (m->self_scm (), SCM_EOL));
1703                 scm_gc_unprotect_object (m->self_scm ());
1704                 $$->set_spot (@$);
1705         }
1706         | E_BRACKET_CLOSE {
1707                 Music *m = MY_MAKE_MUSIC ("LigatureEvent");
1708                 m->set_property ("span-direction", scm_int2num (STOP));
1709                 m->set_spot (@$);
1710
1711                 $$ = MY_MAKE_MUSIC ("EventChord");
1712                 $$->set_property ("elements", scm_cons (m->self_scm (), SCM_EOL));
1713                 $$->set_spot (@$);
1714                 scm_gc_unprotect_object (m->self_scm ());
1715         }
1716         | E_BACKSLASH {
1717                 $$ = MY_MAKE_MUSIC ("VoiceSeparator");
1718                 $$->set_spot (@$);
1719         }
1720         | '|'      {
1721                 SCM pipe = THIS->lexer_->lookup_identifier ("pipeSymbol");
1722
1723                 if (Music * m = unsmob_music (pipe))
1724                         $$ = m->clone ();
1725                 else
1726                         $$ = MY_MAKE_MUSIC ("BarCheck");
1727
1728                 $$->set_spot (@$);
1729         }
1730         | TRANSPOSITION pitch {
1731                 Pitch middle_c;
1732                 Pitch sounds_as_c = pitch_interval (*unsmob_pitch ($2), middle_c);
1733                 $$ = set_property_music (ly_symbol2scm ("instrumentTransposition"),
1734                                          sounds_as_c.smobbed_copy());
1735                 $$->set_spot (@$);
1736                 $$ = context_spec_music (ly_symbol2scm ("Staff"), SCM_UNDEFINED,
1737                         $$, SCM_EOL);
1738         }
1739         | BAR STRING                    {
1740                 Music *t = set_property_music (ly_symbol2scm ("whichBar"), $2);
1741
1742                 Music *csm = context_spec_music (ly_symbol2scm ("Timing"), SCM_UNDEFINED,
1743                                         t, SCM_EOL);
1744                 $$ = context_spec_music (ly_symbol2scm ("Score"), SCM_UNDEFINED, csm, SCM_EOL);
1745                 $$->set_spot (@$);
1746                 t->set_spot (@$);
1747         }
1748         | PARTIAL duration_length       {
1749                 Moment m = - unsmob_duration ($2)->get_length ();
1750                 Music *p = set_property_music (ly_symbol2scm ( "measurePosition"),m.smobbed_copy ());
1751                 p->set_spot (@$);
1752                 p = context_spec_music (ly_symbol2scm ("Timing"), SCM_UNDEFINED,
1753                                         p, SCM_EOL);
1754                 p = context_spec_music (ly_symbol2scm ("Score"), SCM_UNDEFINED,
1755                                         p, SCM_EOL);
1756                 $$ = p;
1757         }
1758         | CLEF STRING  {
1759                 SCM proc = ly_lily_module_constant ("make-clef-set");
1760
1761                 SCM result = scm_call_1 (proc, $2);
1762                 scm_gc_protect_object (result);
1763                 $$ = unsmob_music (result);
1764         }
1765         | TIME_T fraction  {
1766                 SCM proc = ly_lily_module_constant ("make-time-signature-set");
1767
1768                 SCM result = scm_apply_2   (proc, scm_car ($2), scm_cdr ($2), SCM_EOL);
1769                 scm_gc_protect_object (result);
1770                 $$ = unsmob_music (result);
1771         }
1772         | MARK scalar {
1773                 SCM proc = ly_lily_module_constant ("make-mark-set");
1774
1775                 SCM result = scm_call_1 (proc, $2);
1776                 scm_gc_protect_object (result);
1777                 $$ = unsmob_music (result);
1778         }
1779         ;
1780
1781 command_req:
1782         E_TILDE {
1783                 $$ = MY_MAKE_MUSIC ("PesOrFlexaEvent");
1784         }
1785         | MARK DEFAULT  {
1786                 Music *m = MY_MAKE_MUSIC ("MarkEvent");
1787                 $$ = m;
1788         }
1789         | tempo_event {
1790                 $$ = $1;
1791         }
1792         | KEY DEFAULT {
1793                 Music *key = MY_MAKE_MUSIC ("KeyChangeEvent");
1794                 $$ = key;
1795         }
1796         | KEY NOTENAME_PITCH SCM_IDENTIFIER     {
1797
1798                 Music *key = MY_MAKE_MUSIC ("KeyChangeEvent");
1799                 if (scm_ilength ($3) > 0)
1800                 {
1801                         key->set_property ("pitch-alist", $3);
1802                         key->set_property ("tonic", Pitch (0, 0, 0).smobbed_copy ());
1803                         key->transpose (* unsmob_pitch ($2));
1804                 } else {
1805                         THIS->parser_error (@3, _ ("second argument must be pitch list"));
1806                 }
1807
1808                 $$ = key;
1809         }
1810         ;
1811
1812
1813 post_events:
1814         /* empty */ {
1815                 $$ = SCM_EOL;
1816         }
1817         | post_events post_event {
1818                 $2->set_spot (@2);
1819                 $$ = scm_cons ($2->self_scm (), $$);
1820                 scm_gc_unprotect_object ($2->self_scm ());
1821         }
1822         | post_events tagged_post_event {
1823                 $2 -> set_spot (@2);
1824                 $$ = scm_cons ($2->self_scm (), $$);
1825                 scm_gc_unprotect_object ($2->self_scm ());
1826         }
1827         ;
1828
1829
1830 tagged_post_event:
1831         '-' TAG embedded_scm post_event {
1832                 tag_music ($4, $3, @$);
1833                 $$ = $4;
1834         }
1835         ;
1836
1837
1838 post_event:
1839         direction_less_event {
1840                 $$ = $1;
1841         }
1842         | HYPHEN {
1843                 if (!THIS->lexer_->is_lyric_state ())
1844                         THIS->parser_error (@1, _ ("have to be in Lyric mode for lyrics"));
1845                 $$ = MY_MAKE_MUSIC ("HyphenEvent");
1846         }
1847         | EXTENDER {
1848                 if (!THIS->lexer_->is_lyric_state ())
1849                         THIS->parser_error (@1, _ ("have to be in Lyric mode for lyrics"));
1850                 $$ = MY_MAKE_MUSIC ("ExtenderEvent");
1851         }
1852         | script_dir direction_reqd_event {
1853                 if ($1)
1854                         $2->set_property ("direction", scm_int2num ($1));
1855                 $$ = $2;
1856         }
1857         | script_dir direction_less_event {
1858                 if ($1)
1859                         $2->set_property ("direction", scm_int2num ($1));
1860                 $$ = $2;
1861         }
1862         | string_number_event
1863         ;
1864
1865 string_number_event:
1866         E_UNSIGNED {
1867                 Music *s = MY_MAKE_MUSIC ("StringNumberEvent");
1868                 s->set_property ("string-number", scm_int2num ($1));
1869                 s->set_spot (@$);
1870                 $$ = s;
1871         }
1872         ;
1873
1874 direction_less_char:
1875         '['  {
1876                 $$ = ly_symbol2scm ("bracketOpenSymbol");
1877         }
1878         | ']'  {
1879                 $$ = ly_symbol2scm ("bracketCloseSymbol");
1880         }
1881         | '~'  {
1882                 $$ = ly_symbol2scm ("tildeSymbol");
1883         }
1884         | '('  {
1885                 $$ = ly_symbol2scm ("parenthesisOpenSymbol");
1886         }
1887         | ')'  {
1888                 $$ = ly_symbol2scm ("parenthesisCloseSymbol");
1889         }
1890         | E_EXCLAMATION  {
1891                 $$ = ly_symbol2scm ("escapedExclamationSymbol");
1892         }
1893         | E_OPEN  {
1894                 $$ = ly_symbol2scm ("escapedParenthesisOpenSymbol");
1895         }
1896         | E_CLOSE  {
1897                 $$ = ly_symbol2scm ("escapedParenthesisCloseSymbol");
1898         }
1899         | E_ANGLE_CLOSE  {
1900                 $$ = ly_symbol2scm ("escapedBiggerSymbol");
1901         }
1902         | E_ANGLE_OPEN  {
1903                 $$ = ly_symbol2scm ("escapedSmallerSymbol");
1904         }
1905         ;
1906
1907 direction_less_event:
1908         direction_less_char {
1909                 SCM predefd = THIS->lexer_->lookup_identifier_symbol ($1);
1910                 Music * m = 0;
1911                 if (unsmob_music (predefd))
1912                 {
1913                         m = unsmob_music (predefd)->clone ();
1914                 }
1915                 else
1916                 {
1917                         m = MY_MAKE_MUSIC ("Music");
1918                 }
1919                 m->set_spot (@$);
1920                 $$ = m;
1921         }
1922         | EVENT_IDENTIFIER      {
1923                 $$ = unsmob_music ($1);
1924         }
1925         | tremolo_type  {
1926                Music *a = MY_MAKE_MUSIC ("TremoloEvent");
1927                a->set_spot (@$);
1928                a->set_property ("tremolo-type", scm_int2num ($1));
1929                $$ = a;
1930         }
1931         ;
1932
1933 direction_reqd_event:
1934         gen_text_def {
1935                 $$ = $1;
1936         }
1937         | script_abbreviation {
1938                 SCM s = THIS->lexer_->lookup_identifier ("dash" + ly_scm2string ($1));
1939                 Music *a = MY_MAKE_MUSIC ("ArticulationEvent");
1940                 if (scm_is_string (s))
1941                         a->set_property ("articulation-type", s);
1942                 else THIS->parser_error (@1, _ ("expecting string as script definition"));
1943                 $$ = a;
1944         }
1945         ;
1946
1947 octave_check:
1948         /**/ { $$ = SCM_EOL; }
1949         | '='  { $$ = scm_int2num (0); }
1950         | '=' sub_quotes { $$ = scm_int2num ($2); }
1951         | '=' sup_quotes { $$ = scm_int2num ($2); }
1952         ;
1953
1954 sup_quotes:
1955         '\'' {
1956                 $$ = 1;
1957         }
1958         | sup_quotes '\'' {
1959                 $$ ++;
1960         }
1961         ;
1962
1963 sub_quotes:
1964         ',' {
1965                 $$ = 1;
1966         }
1967         | sub_quotes ',' {
1968                 $$++;
1969         }
1970         ;
1971
1972 steno_pitch:
1973         NOTENAME_PITCH  {
1974                 $$ = $1;
1975         }
1976         | NOTENAME_PITCH sup_quotes     {
1977                 Pitch p = *unsmob_pitch ($1);
1978                 p = p.transposed (Pitch ($2,0,0));
1979                 $$ = p.smobbed_copy ();
1980         }
1981         | NOTENAME_PITCH sub_quotes      {
1982                 Pitch p =* unsmob_pitch ($1);
1983                 p = p.transposed (Pitch (-$2,0,0));
1984                 $$ = p.smobbed_copy ();
1985         }
1986         ;
1987
1988 /*
1989 ugh. duplication
1990 */
1991
1992 steno_tonic_pitch:
1993         TONICNAME_PITCH {
1994                 $$ = $1;
1995         }
1996         | TONICNAME_PITCH sup_quotes    {
1997                 Pitch p = *unsmob_pitch ($1);
1998                 p = p.transposed (Pitch ($2,0,0));
1999                 $$ = p.smobbed_copy ();
2000         }
2001         | TONICNAME_PITCH sub_quotes     {
2002                 Pitch p =* unsmob_pitch ($1);
2003
2004                 p = p.transposed (Pitch (-$2,0,0));
2005                 $$ = p.smobbed_copy ();
2006         }
2007         ;
2008
2009 pitch:
2010         steno_pitch {
2011                 $$ = $1;
2012         }
2013         ;
2014
2015 pitch_also_in_chords:
2016         pitch
2017         | steno_tonic_pitch
2018         ;
2019
2020 gen_text_def:
2021         full_markup {
2022                 Music *t = MY_MAKE_MUSIC ("TextScriptEvent");
2023                 t->set_property ("text", $1);
2024                 t->set_spot (@$);
2025                 $$ = t;
2026         }
2027         | string {
2028                 Music *t = MY_MAKE_MUSIC ("TextScriptEvent");
2029                 t->set_property ("text",
2030                         make_simple_markup ($1));
2031                 t->set_spot (@$);
2032                 $$ = t;
2033
2034         }
2035         | DIGIT {
2036                 Music *t = MY_MAKE_MUSIC ("FingerEvent");
2037                 t->set_property ("digit", scm_int2num ($1));
2038                 t->set_spot (@$);
2039                 $$ = t;
2040         }
2041         ;
2042
2043 script_abbreviation:
2044         '^'             {
2045                 $$ = scm_makfrom0str ("Hat");
2046         }
2047         | '+'           {
2048                 $$ = scm_makfrom0str ("Plus");
2049         }
2050         | '-'           {
2051                 $$ = scm_makfrom0str ("Dash");
2052         }
2053         | '|'           {
2054                 $$ = scm_makfrom0str ("Bar");
2055         }
2056         | '>'           {
2057                 $$ = scm_makfrom0str ("Larger");
2058         }
2059         | '.'           {
2060                 $$ = scm_makfrom0str ("Dot");
2061         }
2062         | '_' {
2063                 $$ = scm_makfrom0str ("Underscore");
2064         }
2065         ;
2066
2067 script_dir:
2068         '_'     { $$ = DOWN; }
2069         | '^'   { $$ = UP; }
2070         | '-'   { $$ = CENTER; }
2071         ;
2072
2073
2074 absolute_pitch:
2075         steno_pitch     {
2076                 $$ = $1;
2077         }
2078         ;
2079
2080 duration_length:
2081         multiplied_duration {
2082                 $$ = $1;
2083         }
2084         ;
2085
2086 optional_notemode_duration:
2087         {
2088                 Duration dd = THIS->default_duration_;
2089                 $$ = dd.smobbed_copy ();
2090
2091                 THIS->beam_check ($$);
2092         }
2093         | multiplied_duration   {
2094                 $$ = $1;
2095                 THIS->default_duration_ = *unsmob_duration ($$);
2096
2097                 THIS->beam_check ($$);
2098         }
2099         ;
2100
2101 steno_duration:
2102         bare_unsigned dots              {
2103                 int len = 0;
2104                 if (!is_duration ($1))
2105                         THIS->parser_error (@1, _f ("not a duration: %d", $1));
2106                 else
2107                         len = intlog2 ($1);
2108
2109                 $$ = Duration (len, $2).smobbed_copy ();
2110         }
2111         | DURATION_IDENTIFIER dots      {
2112                 Duration *d = unsmob_duration ($1);
2113                 Duration k (d->duration_log (), d->dot_count () + $2);
2114                 *d = k;
2115                 $$ = $1;
2116         }
2117         ;
2118
2119 multiplied_duration:
2120         steno_duration {
2121                 $$ = $1;
2122         }
2123         | multiplied_duration '*' bare_unsigned {
2124                 $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
2125         }
2126         | multiplied_duration '*' FRACTION {
2127                 Rational  m (scm_to_int (scm_car ($3)), scm_to_int (scm_cdr ($3)));
2128
2129                 $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
2130         }
2131         ;
2132
2133 fraction:
2134         FRACTION { $$ = $1; }
2135         | UNSIGNED '/' UNSIGNED {
2136                 $$ = scm_cons (scm_int2num ($1), scm_int2num ($3));
2137         }
2138         ;
2139
2140 dots:
2141         /* empty */     {
2142                 $$ = 0;
2143         }
2144         | dots '.' {
2145                 $$ ++;
2146         }
2147         ;
2148
2149 tremolo_type:
2150         ':'     {
2151                 $$ = 0;
2152         }
2153         | ':' bare_unsigned {
2154                 if (!is_duration ($2))
2155                         THIS->parser_error (@2, _f ("not a duration: %d", $2));
2156                 $$ = $2;
2157         }
2158         ;
2159
2160 bass_number:
2161         DIGIT   {
2162                 $$ = scm_number_to_string (scm_int2num ($1), scm_int2num (10));
2163                 $$ = scm_list_2 (ly_lily_module_constant ("number-markup"),
2164                                 $$);
2165         }
2166         | UNSIGNED {
2167                 $$ = scm_number_to_string (scm_int2num ($1), scm_int2num (10));
2168                 $$ = scm_list_2 (ly_lily_module_constant ("number-markup"),
2169                                 $$);
2170         }
2171         | STRING { $$ = $1; }
2172         | full_markup { $$ = $1; }
2173         ;
2174
2175 bass_mod:
2176         '-'     { $$ = -2; }
2177         | '+'   { $$ = 2; }
2178         | '!'   { $$ = 0; }
2179         ;
2180
2181 bass_figure:
2182         FIGURE_SPACE {
2183                 Music *bfr = MY_MAKE_MUSIC ("BassFigureEvent");
2184                 $$ = bfr->self_scm ();
2185                 scm_gc_unprotect_object ($$);
2186         }
2187         | bass_number  {
2188                 Music *bfr = MY_MAKE_MUSIC ("BassFigureEvent");
2189                 $$ = bfr->self_scm ();
2190
2191                 bfr->set_property ("figure", $1);
2192
2193                 scm_gc_unprotect_object ($$);
2194         }
2195         | bass_figure bass_mod {
2196                 Music *m = unsmob_music ($1);
2197                 if ($2) {
2198                         SCM salter = m->get_property ("alteration");
2199                         int alter = scm_is_number (salter) ? scm_to_int (salter) : 0;
2200                         m->set_property ("alteration",
2201                                 scm_int2num (alter + $2));
2202                 } else {
2203                         m->set_property ("alteration", scm_int2num (0));
2204                 }
2205         }
2206         ;
2207
2208 br_bass_figure:
2209         '[' bass_figure {
2210                 $$ = $2;
2211                 unsmob_music ($$)->set_property ("bracket-start", SCM_BOOL_T);
2212         }
2213         | bass_figure   {
2214                 $$ = $1;
2215         }
2216         | br_bass_figure ']' {
2217                 $$ = $1;
2218                 unsmob_music ($1)->set_property ("bracket-stop", SCM_BOOL_T);
2219         }
2220         ;
2221
2222 figure_list:
2223         /**/            {
2224                 $$ = SCM_EOL;
2225         }
2226         | figure_list br_bass_figure {
2227                 $$ = scm_cons ($2, $1);
2228         }
2229         ;
2230
2231 figure_spec:
2232         FIGURE_OPEN figure_list FIGURE_CLOSE {
2233                 Music *m = MY_MAKE_MUSIC ("EventChord");
2234                 $2 = scm_reverse_x ($2, SCM_EOL);
2235                 m->set_property ("elements", $2);
2236                 $$ = m->self_scm ();
2237         }
2238         ;
2239
2240
2241 optional_rest:
2242         /**/   { $$ = 0; }
2243         | REST { $$ = 1; }
2244         ;
2245
2246 simple_element:
2247         pitch exclamations questions octave_check optional_notemode_duration optional_rest {
2248                 if (!THIS->lexer_->is_note_state ())
2249                         THIS->parser_error (@1, _ ("have to be in Note mode for notes"));
2250
2251                 Music *n = 0;
2252                 if ($6)
2253                         n = MY_MAKE_MUSIC ("RestEvent");
2254                 else
2255                         n = MY_MAKE_MUSIC ("NoteEvent");
2256
2257                 n->set_property ("pitch", $1);
2258                 n->set_property ("duration", $5);
2259
2260                 if (scm_is_number ($4))
2261                 {
2262                         int q = scm_to_int ($4);
2263                         n->set_property ("absolute-octave", scm_int2num (q-1));
2264                 }
2265
2266                 if ($3 % 2)
2267                         n->set_property ("cautionary", SCM_BOOL_T);
2268                 if ($2 % 2 || $3 % 2)
2269                         n->set_property ("force-accidental", SCM_BOOL_T);
2270
2271                 Music *v = MY_MAKE_MUSIC ("EventChord");
2272                 v->set_property ("elements", scm_list_1 (n->self_scm ()));
2273                 scm_gc_unprotect_object (n->self_scm ());
2274
2275                 v->set_spot (@$);
2276                 n->set_spot (@$);
2277                 $$ = v;
2278         }
2279         | DRUM_PITCH optional_notemode_duration {
2280                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
2281                 n->set_property ("duration", $2);
2282                 n->set_property ("drum-type", $1);
2283
2284                 Music *v = MY_MAKE_MUSIC ("EventChord");
2285                 v->set_property ("elements", scm_list_1 (n->self_scm ()));
2286                 scm_gc_unprotect_object (n->self_scm ());
2287                 v->set_spot (@$);
2288                 n->set_spot (@$);
2289                 $$ = v;
2290
2291         }
2292         | figure_spec optional_notemode_duration {
2293                 Music *m = unsmob_music ($1);
2294                 m->set_spot (@$);
2295                 for (SCM s = m->get_property ("elements"); scm_is_pair (s); s = scm_cdr (s))
2296                 {
2297                         unsmob_music (scm_car (s))->set_property ("duration", $2);
2298                 }
2299                 $$ = m;
2300         }
2301         | RESTNAME optional_notemode_duration           {
2302                 Music *ev = 0;
2303                 if (ly_scm2string ($1) == "s") {
2304                         /* Space */
2305                         ev = MY_MAKE_MUSIC ("SkipEvent");
2306                   }
2307                 else {
2308                         ev = MY_MAKE_MUSIC ("RestEvent");
2309
2310                     }
2311                 ev->set_property ("duration", $2);
2312                 ev->set_spot (@$);
2313                 Music *velt = MY_MAKE_MUSIC ("EventChord");
2314                 velt->set_property ("elements", scm_list_1 (ev->self_scm ()));
2315                 velt->set_spot (@$);
2316
2317                 scm_gc_unprotect_object (ev->self_scm ());
2318
2319                 $$ = velt;
2320         }
2321         | MULTI_MEASURE_REST optional_notemode_duration         {
2322                 SCM proc = ly_lily_module_constant ("make-multi-measure-rest");
2323                 SCM mus = scm_call_2 (proc, $2, make_input (@$));
2324                 scm_gc_protect_object (mus);
2325                 $$ = unsmob_music (mus);
2326         }
2327
2328         | lyric_element optional_notemode_duration      {
2329                 if (!THIS->lexer_->is_lyric_state ())
2330                         THIS->parser_error (@1, _ ("have to be in Lyric mode for lyrics"));
2331
2332                 Music *lreq = MY_MAKE_MUSIC ("LyricEvent");
2333                 lreq->set_property ("text", $1);
2334                 lreq->set_property ("duration",$2);
2335                 lreq->set_spot (@$);
2336                 Music *velt = MY_MAKE_MUSIC ("EventChord");
2337                 velt->set_property ("elements", scm_list_1 (lreq->self_scm ()));
2338
2339                 $$= velt;
2340         }
2341         | new_chord {
2342                 if (!THIS->lexer_->is_chord_state ())
2343                         THIS->parser_error (@1, _ ("have to be in Chord mode for chords"));
2344                 $$ = unsmob_music ($1);
2345         }
2346         ;
2347
2348 lyric_element:
2349         lyric_markup {
2350                 $$ = $1;
2351         }
2352         | LYRICS_STRING {
2353                 $$ = make_simple_markup ($1);
2354         }
2355         ;
2356
2357 new_chord:
2358         steno_tonic_pitch optional_notemode_duration   {
2359                 $$ = make_chord ($1, $2, SCM_EOL);
2360         }
2361         | steno_tonic_pitch optional_notemode_duration chord_separator chord_items {
2362                 SCM its = scm_reverse_x ($4, SCM_EOL);
2363                 $$ = make_chord ($1, $2, scm_cons ($3, its));
2364         }
2365         ;
2366
2367 chord_items:
2368         /**/ {
2369                 $$ = SCM_EOL;
2370         }
2371         | chord_items chord_item {
2372                 $$ = scm_cons ($2, $$);
2373         }
2374         ;
2375
2376 chord_separator:
2377         CHORD_COLON {
2378                 $$ = ly_symbol2scm ("chord-colon");
2379         }
2380         | CHORD_CARET {
2381                 $$ = ly_symbol2scm ("chord-caret");
2382         }
2383         | CHORD_SLASH steno_tonic_pitch {
2384                 $$ = scm_list_2 (ly_symbol2scm ("chord-slash"), $2);
2385         }
2386         | CHORD_BASS steno_tonic_pitch {
2387                 $$ = scm_list_2 (ly_symbol2scm ("chord-bass"), $2);
2388         }
2389         ;
2390
2391 chord_item:
2392         chord_separator {
2393                 $$ = $1;
2394         }
2395         | step_numbers {
2396                 $$ = scm_reverse_x ($1, SCM_EOL);
2397         }
2398         | CHORD_MODIFIER  {
2399                 $$ = $1;
2400         }
2401         ;
2402
2403 step_numbers:
2404         step_number { $$ = scm_cons ($1, SCM_EOL); }
2405         | step_numbers '.' step_number {
2406                 $$ = scm_cons ($3, $$);
2407         }
2408         ;
2409
2410 step_number:
2411         bare_unsigned {
2412                 $$ = make_chord_step ($1, 0);
2413         }
2414         | bare_unsigned '+' {
2415                 $$ = make_chord_step ($1, SHARP);
2416         }
2417         | bare_unsigned CHORD_MINUS {
2418                 $$ = make_chord_step ($1, FLAT);
2419         }
2420         ;
2421
2422 /*
2423         UTILITIES
2424
2425 TODO: should deprecate in favor of Scheme?
2426
2427  */
2428 number_expression:
2429         number_expression '+' number_term {
2430                 $$ = scm_sum ($1, $3);
2431         }
2432         | number_expression '-' number_term {
2433                 $$ = scm_difference ($1, $3);
2434         }
2435         | number_term
2436         ;
2437
2438 number_term:
2439         number_factor {
2440                 $$ = $1;
2441         }
2442         | number_factor '*' number_factor {
2443                 $$ = scm_product ($1, $3);
2444         }
2445         | number_factor '/' number_factor {
2446                 $$ = scm_divide ($1, $3);
2447         }
2448         ;
2449
2450 number_factor:
2451         '-'  number_factor { /* %prec UNARY_MINUS */
2452                 $$ = scm_difference ($2, SCM_UNDEFINED);
2453         }
2454         | bare_number
2455         ;
2456
2457
2458 bare_number:
2459         UNSIGNED        {
2460                 $$ = scm_int2num ($1);
2461         }
2462         | REAL          {
2463                 $$ = $1;
2464         }
2465         | NUMBER_IDENTIFIER             {
2466                 $$ = $1;
2467         }
2468         | REAL NUMBER_IDENTIFIER        {
2469                 $$ = scm_make_real (scm_to_double ($1) *scm_to_double ($2));
2470         }
2471         | UNSIGNED NUMBER_IDENTIFIER    {
2472                 $$ = scm_make_real ($1 *scm_to_double ($2));
2473         }
2474         ;
2475
2476
2477 bare_unsigned:
2478         UNSIGNED {
2479                         $$ = $1;
2480         }
2481         | DIGIT {
2482                 $$ = $1;
2483         }
2484         ;
2485
2486 bare_int:
2487         bare_number {
2488                 if (scm_integer_p ($1) == SCM_BOOL_T)
2489                 {
2490                         int k = scm_to_int ($1);
2491                         $$ = k;
2492                 } else
2493                 {
2494                         THIS->parser_error (@1, _ ("need integer number arg"));
2495                         $$ = 0;
2496                 }
2497         }
2498         | '-' bare_int {
2499                 $$ = -$2;
2500         }
2501         ;
2502
2503 exclamations:
2504                 { $$ = 0; }
2505         | exclamations '!'      { $$ ++; }
2506         ;
2507
2508 questions:
2509                 { $$ = 0; }
2510         | questions '?' { $$ ++; }
2511         ;
2512
2513 /*
2514 This should be done more dynamically if possible.
2515 */
2516
2517 lyric_markup:
2518         LYRIC_MARKUP_IDENTIFIER {
2519                 $$ = $1;
2520         }
2521         | LYRIC_MARKUP
2522                 { THIS->lexer_->push_markup_state (); }
2523         markup_top {
2524                 $$ = $3;
2525                 THIS->lexer_->pop_state ();
2526         }
2527         ;
2528
2529 full_markup:
2530         MARKUP_IDENTIFIER {
2531                 $$ = $1;
2532         }
2533         | MARKUP
2534                 { THIS->lexer_->push_markup_state (); }
2535         markup_top {
2536                 $$ = $3;
2537                 THIS->lexer_->pop_state ();
2538         }
2539         ;
2540
2541 markup_top:
2542         markup_list {
2543                 $$ = scm_list_2 (ly_lily_module_constant ("line-markup"),  $1);
2544         }
2545         | markup_head_1_list simple_markup      {
2546                 $$ = scm_car (scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, scm_list_1 ($2)));
2547         }
2548         | simple_markup {
2549                 $$ = $1;
2550         }
2551         ;
2552
2553 markup_list:
2554         markup_composed_list {
2555                 $$ = $1;
2556         }
2557         | markup_braced_list {
2558                 $$ = $1;
2559         }
2560         ;
2561
2562 markup_composed_list:
2563         markup_head_1_list markup_braced_list {
2564                 $$ = scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, $2);
2565
2566         }
2567         ;
2568
2569 markup_braced_list:
2570         '{' markup_braced_list_body '}' {
2571                 $$ = scm_reverse_x ($2, SCM_EOL);
2572         }
2573         ;
2574
2575 markup_braced_list_body:
2576         /* empty */     {  $$ = scm_list (SCM_EOL); }
2577         | markup_braced_list_body markup {
2578                 $$ = scm_cons ($2, $1);
2579         }
2580         | markup_braced_list_body markup_list {
2581                 $$ = scm_append_x (scm_list_2 (scm_reverse_x ($2, SCM_EOL), $1));
2582         }
2583         ;
2584
2585 markup_head_1_item:
2586         MARKUP_HEAD_MARKUP0     {
2587                 $$ = scm_list_1 ($1);
2588         }
2589         | MARKUP_HEAD_SCM0_MARKUP1 embedded_scm {
2590                 $$ = scm_list_2 ($1, $2);
2591         }
2592         | MARKUP_HEAD_SCM0_SCM1_MARKUP2 embedded_scm embedded_scm       {
2593                 $$ = scm_list_3 ($1, $2, $3);
2594         }
2595         ;
2596
2597 markup_head_1_list:
2598         markup_head_1_item      {
2599                 $$ = scm_list_1 ($1);
2600         }
2601         | markup_head_1_list markup_head_1_item {
2602                 $$ = scm_cons ($2, $1);
2603         }
2604         ;
2605
2606 simple_markup:
2607         STRING {
2608                 $$ = make_simple_markup ($1);
2609         }
2610         | MARKUP_IDENTIFIER {
2611                 $$ = $1;
2612         }
2613         | LYRIC_MARKUP_IDENTIFIER {
2614                 $$ = $1;
2615         }
2616         | STRING_IDENTIFIER {
2617                 $$ = $1;
2618         }
2619         | SCORE {
2620                 SCM nn = THIS->lexer_->lookup_identifier ("pitchnames");
2621                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
2622         } '{' score_body '}' {
2623                 Score * sc = $4;
2624                 $$ = scm_list_2 (ly_lily_module_constant ("score-markup"), sc->self_scm ());
2625                 scm_gc_unprotect_object (sc->self_scm ());
2626                 THIS->lexer_->pop_state ();
2627         }
2628         | MARKUP_HEAD_SCM0 embedded_scm {
2629                 $$ = scm_list_2 ($1, $2);
2630         }
2631         | MARKUP_HEAD_SCM0_SCM1_SCM2 embedded_scm embedded_scm embedded_scm {
2632                 $$ = scm_list_4 ($1, $2, $3, $4);
2633         }
2634         | MARKUP_HEAD_SCM0_SCM1 embedded_scm embedded_scm {
2635                 $$ = scm_list_3 ($1, $2, $3);
2636         }
2637         | MARKUP_HEAD_EMPTY {
2638                 $$ = scm_list_1 ($1);
2639         }
2640         | MARKUP_HEAD_LIST0 markup_list {
2641                 $$ = scm_list_2 ($1,$2);
2642         }
2643         | MARKUP_HEAD_MARKUP0_MARKUP1 markup markup {
2644                 $$ = scm_list_3 ($1, $2, $3);
2645         }
2646         ;
2647
2648 markup:
2649         markup_head_1_list simple_markup        {
2650                 $$ = scm_car (scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, scm_list_1 ($2)));
2651         }
2652         | simple_markup {
2653                 $$ = $1;
2654         }
2655         ;
2656
2657 %%
2658
2659 void
2660 Lily_parser::set_yydebug (bool )
2661 {
2662 #if 0
2663         yydebug = 1;
2664 #endif
2665 }
2666
2667 void
2668 Lily_parser::do_yyparse ()
2669 {
2670         yyparse ((void*)this);
2671 }
2672
2673
2674 /*
2675 Should make this optional?    It will also complain when you do
2676
2677         [s4]
2678
2679 which is entirely legitimate.
2680
2681 Or we can scrap it. Barchecks should detect wrong durations, and
2682 skipTypesetting speeds it up a lot.
2683 */
2684
2685 void
2686 Lily_parser::beam_check (SCM dur)
2687 {
2688   Duration *d = unsmob_duration (dur);
2689   if (unsmob_music (last_beam_start_) && d->duration_log () <= 2)
2690     {
2691       Music *m = unsmob_music (last_beam_start_);
2692       m->origin ()->warning (_f ("suspect duration in beam: %s",
2693       d->to_string ()));
2694     }
2695   last_beam_start_ = SCM_EOL;
2696 }
2697
2698
2699
2700
2701 /*
2702
2703 It is a little strange to have this function in this file, but
2704 otherwise, we have to import music classes into the lexer.
2705
2706 */
2707 int
2708 Lily_lexer::try_special_identifiers (SCM *destination, SCM sid)
2709 {
2710         if (scm_is_string (sid)) {
2711                 *destination = sid;
2712                 return STRING_IDENTIFIER;
2713         } else if (scm_is_number (sid)) {
2714                 *destination = sid;
2715                 return NUMBER_IDENTIFIER;
2716         } else if (unsmob_context_def (sid)) {
2717                 *destination = unsmob_context_def (sid)->clone_scm ();
2718                 return CONTEXT_DEF_IDENTIFIER;
2719         } else if (unsmob_score (sid)) {
2720                 Score *score = new Score (*unsmob_score (sid));
2721                 *destination = score->self_scm ();
2722                 return SCORE_IDENTIFIER;
2723         } else if (Music *mus = unsmob_music (sid)) {
2724                 mus = mus->clone ();
2725                 *destination = mus->self_scm ();
2726                 unsmob_music (*destination)->
2727                         set_property ("origin", make_input (last_input_));
2728                 return dynamic_cast<Event*> (mus)
2729                         ? EVENT_IDENTIFIER : MUSIC_IDENTIFIER;
2730         } else if (unsmob_duration (sid)) {
2731                 *destination = unsmob_duration (sid)->smobbed_copy ();
2732                 return DURATION_IDENTIFIER;
2733         } else if (unsmob_output_def (sid)) {
2734                 Output_def *p = unsmob_output_def (sid);
2735                 p = p->clone ();
2736
2737                 *destination = p->self_scm ();
2738                 return OUTPUT_DEF_IDENTIFIER;
2739         } else if (Text_interface::markup_p (sid)) {
2740                 *destination = sid;
2741                 if (is_lyric_state ())
2742                         return LYRIC_MARKUP_IDENTIFIER;
2743                 return MARKUP_IDENTIFIER;
2744         }
2745
2746         return -1;
2747 }
2748
2749 Music *
2750 property_op_to_music (SCM op)
2751 {
2752         Music *m = 0;
2753         SCM tag = scm_car (op);
2754         SCM symbol = scm_cadr (op);
2755         SCM args = scm_cddr (op);
2756         SCM grob_val = SCM_UNDEFINED;
2757         SCM grob_sym = SCM_UNDEFINED;
2758         SCM val = SCM_UNDEFINED;
2759
2760         if (tag == ly_symbol2scm ("assign"))
2761                 {
2762                 m = MY_MAKE_MUSIC ("PropertySet");
2763                 val = scm_car (args);
2764                 }
2765         else if (tag == ly_symbol2scm ("unset"))
2766                 m = MY_MAKE_MUSIC ("PropertyUnset");
2767         else if (tag == ly_symbol2scm ("poppush")
2768                  || tag == ly_symbol2scm ("push"))
2769                 {
2770                 m = MY_MAKE_MUSIC ("OverrideProperty");
2771                 grob_sym = scm_car (args);
2772                 grob_val = scm_cadr (args);
2773                 }
2774         else if (tag == ly_symbol2scm ("pop")) {
2775                 m = MY_MAKE_MUSIC ("RevertProperty");
2776                 grob_sym = scm_car (args);
2777                 }
2778
2779         m->set_property ("symbol", symbol);
2780
2781         if (val != SCM_UNDEFINED)
2782                 m->set_property ("value", val);
2783         if (grob_val != SCM_UNDEFINED)
2784                 m->set_property ("grob-value", grob_val);
2785
2786         if (grob_sym != SCM_UNDEFINED)
2787                 {
2788                 bool itc = do_internal_type_checking_global;
2789                 /* UGH.
2790                 */
2791                 bool autobeam = ly_c_equal_p (symbol, ly_symbol2scm ("autoBeamSettings"));
2792                 if (autobeam)
2793                         do_internal_type_checking_global = false;
2794                 m->set_property ("grob-property", grob_sym);
2795                 if (autobeam)
2796                         do_internal_type_checking_global = itc;
2797                 }
2798
2799         if (tag == ly_symbol2scm ("poppush"))
2800                 m->set_property ("pop-first", SCM_BOOL_T);
2801
2802
2803         return m;
2804 }
2805
2806 Music*
2807 context_spec_music (SCM type, SCM id, Music *m, SCM ops)
2808 {
2809         Music *csm = MY_MAKE_MUSIC ("ContextSpeccedMusic");
2810
2811         csm->set_property ("element", m->self_scm ());
2812         scm_gc_unprotect_object (m->self_scm ());
2813
2814         csm->set_property ("context-type",
2815                 scm_is_symbol (type) ? type : scm_string_to_symbol (type));
2816         csm->set_property ("property-operations", ops);
2817
2818         if (scm_is_string (id))
2819                 csm->set_property ("context-id", id);
2820         return csm;
2821 }
2822
2823 SCM
2824 get_next_unique_context_id ()
2825 {
2826         return scm_makfrom0str ("$uniqueContextId");
2827 }
2828
2829
2830 SCM
2831 get_next_unique_lyrics_context_id ()
2832 {
2833         static int new_context_count;
2834         char s[128];
2835         snprintf (s, 1024, "uniqueContext%d", new_context_count++);
2836         return scm_makfrom0str (s);
2837 }