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 *loc, 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 = loc;
 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 DEFAULTCHILD "\\defaultchild"
 283 %token DENIES "\\denies"
 284 %token DESCRIPTION "\\description"
 285 %token DRUMMODE "\\drummode"
 286 %token DRUMS "\\drums"
 287 %token FIGUREMODE "\\figuremode"
 288 %token FIGURES "\\figures"
 289 %token GROBDESCRIPTIONS "\\grobdescriptions"
 290 %token HEADER "\\header"
 291 %token INVALID "\\invalid"
 292 %token KEY "\\key"
 293 %token LAYOUT "\\layout"
 294 %token LYRICMODE "\\lyricmode"
 295 %token LYRICS "\\lyrics"
 296 %token LYRICSTO "\\lyricsto"
 297 %token MARK "\\mark"
 298 %token MARKUP "\\markup"
 299 %token MIDI "\\midi"
 300 %token NAME "\\name"
 301 %token NOTEMODE "\\notemode"
 302 %token OBJECTID "\\objectid"
 303 %token OCTAVE "\\octave"
 304 %token ONCE "\\once"
 305 %token OVERRIDE "\\override"
 306 %token PAPER "\\paper"
 307 %token PARTIAL "\\partial"
 308 %token RELATIVE "\\relative"
 309 %token REMOVE "\\remove"
 310 %token REPEAT "\\repeat"
 311 %token REST "\\rest"
 312 %token REVERT "\\revert"
 313 %token SCORE "\\score"
 314 %token SEQUENTIAL "\\sequential"
 315 %token SET "\\set"
 316 %token SIMULTANEOUS "\\simultaneous"
 317 %token SKIP "\\skip"
 318 %token TAG "\\tag"
 319 %token TEMPO "\\tempo"
 320 %token TIMES "\\times"
 321 %token TRANSPOSE "\\transpose"
 322 %token TRANSPOSITION "\\transposition"
 323 %token TYPE "\\type"
 324 %token UNSET "\\unset"
 325 %token WITH "\\with"
 326
 327 /* Keyword token exceptions.  */
 328 %token TIME_T "\\time"
 329 %token NEWCONTEXT "\\new"
 330
 331
 332 /* Other string tokens.  */
 333
 334 %token CHORD_BASS "/+"
 335 %token CHORD_CARET "^"
 336 %token CHORD_COLON ":"
 337 %token CHORD_MINUS "-"
 338 %token CHORD_SLASH "/"
 339 %token DOUBLE_ANGLE_CLOSE ">>"
 340 %token DOUBLE_ANGLE_OPEN "<<"
 341 %token E_BACKSLASH "\\"
 342 %token E_ANGLE_CLOSE "\\>"
 343 %token E_CHAR "\\C[haracter]"
 344 %token E_CLOSE "\\)"
 345 %token E_EXCLAMATION "\\!"
 346 %token E_BRACKET_OPEN "\\["
 347 %token E_OPEN "\\("
 348 %token E_BRACKET_CLOSE "\\]"
 349 %token E_ANGLE_OPEN "\\<"
 350 %token E_TILDE "\\~"
 351 %token EXTENDER "__"
 352 /*  These used at all?
 353   %token FIGURE_BRACKET_CLOSE
 354   %token FIGURE_BRACKET_OPEN
 355
 356 parser.yy:348.8-25: warning: symbol `"\\>"' used more than once as a literal string
 357 parser.yy:352.8-24: warning: symbol `"\\<"' used more than once as a literal string
 358
 359 */
 360 %token FIGURE_CLOSE /* "\\>" */
 361 %token FIGURE_OPEN /* "\\<" */
 362 %token FIGURE_SPACE "_"
 363 %token HYPHEN "--"
 364
 365 %token CHORDMODIFIERS
 366 %token COMMANDSPANREQUEST
 367 %token LYRIC_MARKUP
 368 %token MULTI_MEASURE_REST
 369 %token SCM_T
 370
 371
 372 %token <i> DIGIT
 373 %token <i> E_UNSIGNED
 374 %token <i> UNSIGNED
 375
 376 %token <id> IDENTIFIER
 377
 378 %token <scm> CHORDMODIFIER_PITCH
 379 %token <scm> CHORD_MODIFIER
 380 %token <scm> CONTEXT_DEF_IDENTIFIER
 381 %token <scm> DRUM_PITCH
 382 %token <scm> DURATION_IDENTIFIER
 383 %token <scm> EVENT_IDENTIFIER
 384 %token <scm> FRACTION
 385 %token <scm> LYRICS_STRING
 386 %token <scm> LYRIC_MARKUP_IDENTIFIER
 387 %token <scm> MARKUP_HEAD_EMPTY
 388 %token <scm> MARKUP_HEAD_LIST0
 389 %token <scm> MARKUP_HEAD_MARKUP0
 390 %token <scm> MARKUP_HEAD_MARKUP0_MARKUP1
 391 %token <scm> MARKUP_HEAD_SCM0
 392 %token <scm> MARKUP_HEAD_SCM0_MARKUP1
 393 %token <scm> MARKUP_HEAD_SCM0_SCM1
 394 %token <scm> MARKUP_HEAD_SCM0_SCM1_MARKUP2
 395 %token <scm> MARKUP_HEAD_SCM0_SCM1_SCM2
 396 %token <scm> MARKUP_IDENTIFIER
 397 %token <scm> MUSIC_FUNCTION
 398 %token <scm> MUSIC_FUNCTION_MARKUP
 399 %token <scm> MUSIC_FUNCTION_MARKUP_MARKUP
 400 %token <scm> MUSIC_FUNCTION_MARKUP_MARKUP_MUSIC
 401 %token <scm> MUSIC_FUNCTION_MARKUP_MUSIC
 402 %token <scm> MUSIC_FUNCTION_MARKUP_MUSIC_MUSIC
 403 %token <scm> MUSIC_FUNCTION_MUSIC
 404 %token <scm> MUSIC_FUNCTION_MUSIC_MUSIC
 405 %token <scm> MUSIC_FUNCTION_SCM
 406 %token <scm> MUSIC_FUNCTION_SCM_MUSIC
 407 %token <scm> MUSIC_FUNCTION_SCM_MUSIC_MUSIC
 408 %token <scm> MUSIC_FUNCTION_SCM_SCM
 409 %token <scm> MUSIC_FUNCTION_SCM_SCM_MUSIC
 410 %token <scm> MUSIC_IDENTIFIER
 411 %token <scm> NOTENAME_PITCH
 412 %token <scm> NUMBER_IDENTIFIER
 413 %token <scm> OUTPUT_DEF_IDENTIFIER
 414 %token <scm> REAL
 415 %token <scm> RESTNAME
 416 %token <scm> SCM_IDENTIFIER
 417 %token <scm> SCM_T
 418 %token <scm> SCORE_IDENTIFIER
 419 %token <scm> STRING
 420 %token <scm> STRING_IDENTIFIER
 421 %token <scm> TONICNAME_PITCH
 422
 423
 424 %type <book> book_block
 425 %type <book> book_body
 426
 427 %type <i> bare_int
 428 %type <i> bare_unsigned
 429 %type <i> bass_mod
 430 %type <i> dots
 431 %type <i> exclamations
 432 %type <i> optional_rest
 433 %type <i> questions
 434 %type <i> script_dir
 435 %type <i> sub_quotes
 436 %type <i> sup_quotes
 437 %type <i> tremolo_type
 438
 439 %type <music> Composite_music
 440 %type <music> Generic_prefix_music
 441 %type <music> Grouped_music_list
 442 %type <music> Music
 443 %type <music> Prefix_composite_music
 444 %type <music> Repeated_music
 445 %type <music> Sequential_music
 446 %type <music> Simple_music
 447 %type <music> Simultaneous_music
 448 %type <music> chord_body
 449 %type <music> chord_body_element
 450 %type <music> command_element
 451 %type <music> command_req
 452 %type <music> context_change
 453 %type <music> direction_less_event
 454 %type <music> direction_reqd_event
 455 %type <music> event_chord
 456 %type <music> gen_text_def
 457 %type <music> music_property_def
 458 %type <music> note_chord_element
 459 %type <music> post_event
 460 %type <music> re_rhythmed_music
 461 %type <music> relative_music
 462 %type <music> simple_element
 463 %type <music> string_number_event
 464 %type <music> tagged_post_event
 465 %type <music> tempo_event
 466 %type <music> toplevel_music
 467
 468 %type <outputdef> output_def_body
 469 %type <outputdef> output_def_head
 470 %type <outputdef> output_def
 471 %type <outputdef> paper_block
 472
 473 %type <scm> Alternative_music
 474 %type <scm> Generic_prefix_music_scm
 475 %type <scm> Music_list
 476 %type <scm> absolute_pitch
 477 %type <scm> assignment_id
 478 %type <scm> bare_number
 479 %type <scm> bass_figure
 480 %type <scm> bass_number
 481 %type <scm> br_bass_figure
 482 %type <scm> chord_body_elements
 483 %type <scm> chord_item
 484 %type <scm> chord_items
 485 %type <scm> chord_separator
 486 %type <scm> context_def_mod
 487 %type <scm> context_def_spec_block
 488 %type <scm> context_def_spec_body
 489 %type <scm> context_mod
 490 %type <scm> context_mod_list
 491 %type <scm> context_prop_spec
 492 %type <scm> direction_less_char
 493 %type <scm> duration_length
 494 %type <scm> embedded_scm
 495 %type <scm> figure_list
 496 %type <scm> figure_spec
 497 %type <scm> fraction
 498 %type <scm> full_markup
 499 %type <scm> identifier_init
 500 %type <scm> lilypond_header
 501 %type <scm> lilypond_header_body
 502 %type <scm> lyric_element
 503 %type <scm> lyric_markup
 504 %type <scm> markup
 505 %type <scm> markup_braced_list
 506 %type <scm> markup_braced_list_body
 507 %type <scm> markup_composed_list
 508 %type <scm> markup_head_1_item
 509 %type <scm> markup_head_1_list
 510 %type <scm> markup_list
 511 %type <scm> markup_top
 512 %type <scm> mode_changing_head
 513 %type <scm> mode_changing_head_with_context
 514 %type <scm> multiplied_duration
 515 %type <scm> new_chord
 516 %type <scm> new_lyrics
 517 %type <scm> number_expression
 518 %type <scm> number_factor
 519 %type <scm> number_term
 520 %type <scm> object_id_setting
 521 %type <scm> octave_check
 522 %type <scm> optional_context_mod
 523 %type <scm> optional_notemode_duration
 524 %type <scm> pitch
 525 %type <scm> pitch_also_in_chords
 526 %type <scm> post_events
 527 %type <scm> property_operation
 528 %type <scm> scalar
 529 %type <scm> script_abbreviation
 530 %type <scm> simple_markup
 531 %type <scm> simple_string
 532 %type <scm> steno_duration
 533 %type <scm> steno_pitch
 534 %type <scm> steno_tonic_pitch
 535 %type <scm> step_number
 536 %type <scm> step_numbers
 537 %type <scm> string
 538
 539 %type <score> score_block
 540 %type <score> score_body
 541
 542
 543 %left '-' '+'
 544
 545 /* We don't assign precedence to / and *, because we might need varied
 546 prec levels in different prods */
 547
 548 %left UNARY_MINUS
 549
 550 %%
 551
 552 lilypond:       /* empty */
 553         | lilypond toplevel_expression {
 554         }
 555         | lilypond assignment {
 556         }
 557         | lilypond error {
 558                 THIS->error_level_ = 1;
 559         }
 560         | lilypond INVALID      {
 561                 THIS->error_level_ = 1;
 562         }
 563         ;
 564
 565
 566 object_id_setting:
 567         OBJECTID STRING { $$ = $2; }
 568         ;
 569
 570 toplevel_expression:
 571         lilypond_header {
 572                 THIS->lexer_->set_identifier (ly_symbol2scm ("$globalheader"), $1);
 573         }
 574         | add_quote {
 575
 576         }
 577         | book_block {
 578                 Book *book = $1;
 579                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-book-handler");
 580                 scm_call_2 (proc, THIS->self_scm (), book->self_scm ());
 581                 scm_gc_unprotect_object (book->self_scm ());
 582         }
 583         | score_block {
 584                 Score *score = $1;
 585
 586                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-score-handler");
 587                 scm_call_2 (proc, THIS->self_scm (), score->self_scm ());
 588                 scm_gc_unprotect_object (score->self_scm ());
 589         }
 590         | toplevel_music {
 591                 Music *music = $1;
 592                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-music-handler");
 593                 scm_call_2 (proc, THIS->self_scm (), music->self_scm ());
 594                 scm_gc_unprotect_object (music->self_scm ());
 595         }
 596         | full_markup {
 597                 SCM proc = THIS->lexer_->lookup_identifier ("toplevel-text-handler");
 598                 scm_call_2 (proc, THIS->self_scm (), $1);
 599         }
 600         | output_def {
 601                 SCM id = SCM_EOL;
 602                 Output_def * od = $1;
 603
 604                 if ($1->c_variable ("is-paper") == SCM_BOOL_T)
 605                         id = ly_symbol2scm ("$defaultpaper");
 606                 else if ($1->c_variable ("is-midi") == SCM_BOOL_T)
 607                         id = ly_symbol2scm ("$defaultmidi");
 608                 else if ($1->c_variable ("is-layout") == SCM_BOOL_T)
 609                         id = ly_symbol2scm ("$defaultlayout");
 610
 611                 THIS->lexer_->set_identifier (id, od->self_scm ());
 612                 scm_gc_unprotect_object (od->self_scm ());
 613         }
 614         ;
 615
 616 toplevel_music:
 617         Composite_music {
 618         }
 619         ;
 620
 621 embedded_scm:
 622         SCM_T
 623         | SCM_IDENTIFIER
 624         ;
 625
 626
 627 lilypond_header_body:
 628         {
 629                 $$ = ly_make_anonymous_module (be_safe_global);
 630                 THIS->lexer_->add_scope ($$);
 631         }
 632         | lilypond_header_body assignment  {
 633
 634         }
 635         ;
 636
 637 lilypond_header:
 638         HEADER '{' lilypond_header_body '}'     {
 639                 $$ = THIS->lexer_->remove_scope ();
 640         }
 641         ;
 642
 643 /*
 644         DECLARATIONS
 645 */
 646 assignment_id:
 647         STRING          { $$ = $1; }
 648         | LYRICS_STRING { $$ = $1; }
 649         ;
 650
 651 assignment:
 652         assignment_id '=' identifier_init  {
 653                 if (! is_regular_identifier ($1))
 654                 {
 655                         @1.warning (_ ("identifier should have alphabetic characters only"));
 656                 }
 657
 658                 THIS->lexer_->set_identifier ($1, $3);
 659
 660 /*
 661  TODO: devise standard for protection in parser.
 662
 663   The parser stack lives on the C-stack, which means that
 664 all objects can be unprotected as soon as they're here.
 665
 666 */
 667         }
 668         | embedded_scm { }
 669         ;
 670
 671
 672 identifier_init:
 673         score_block {
 674                 $$ = $1->self_scm ();
 675                 scm_gc_unprotect_object ($$);
 676         }
 677         | output_def {
 678                 $$ = $1->self_scm ();
 679                 scm_gc_unprotect_object ($$);
 680         }
 681         | context_def_spec_block {
 682                 $$ = $1;
 683         }
 684         | Music  {
 685                 $$ = $1->self_scm ();
 686                 scm_gc_unprotect_object ($$);
 687         }
 688         | post_event {
 689                 $$ = $1->self_scm ();
 690                 scm_gc_unprotect_object ($$);
 691         }
 692         | number_expression {
 693                 $$ = $1;
 694         }
 695         | string {
 696                 $$ = $1;
 697         }
 698         | embedded_scm {
 699                 $$ = $1;
 700         }
 701         | full_markup {
 702                 $$ = $1;
 703         }
 704         | DIGIT {
 705                 $$ = scm_int2num ($1);
 706         }
 707         ;
 708
 709 context_def_spec_block:
 710         CONTEXT '{' context_def_spec_body '}'
 711                 {
 712                 $$ = $3;
 713         }
 714         ;
 715
 716 context_def_spec_body:
 717         /**/ {
 718                 $$ = Context_def::make_scm ();
 719                 unsmob_context_def ($$)->set_spot (@$);
 720         }
 721         | CONTEXT_DEF_IDENTIFIER {
 722                 $$ = $1;
 723                 unsmob_context_def ($$)->set_spot (@$);
 724         }
 725         | context_def_spec_body GROBDESCRIPTIONS embedded_scm {
 726                 Context_def*td = unsmob_context_def ($$);
 727
 728                 for (SCM p = $3; scm_is_pair (p); p = scm_cdr (p)) {
 729                         SCM tag = scm_caar (p);
 730
 731                         /* TODO: should make new tag "grob-definition" ? */
 732                         td->add_context_mod (scm_list_3 (ly_symbol2scm ("assign"),
 733                                                         tag, scm_cons (scm_cdar (p), SCM_EOL)));
 734                 }
 735         }
 736         | context_def_spec_body context_mod {
 737                 unsmob_context_def ($$)->add_context_mod ($2);
 738         }
 739         ;
 740
 741
 742
 743 book_block:
 744         BOOK '{' book_body '}'  {
 745                 $$ = $3;
 746         }
 747         ;
 748
 749 /* FIXME:
 750    * Use 'handlers' like for toplevel-* stuff?
 751    * grok \layout and \midi?  */
 752 book_body:
 753         {
 754                 $$ = new Book;
 755                 $$->set_spot (@$);
 756                 $$->paper_ = dynamic_cast<Output_def*> (unsmob_output_def (THIS->lexer_->lookup_identifier ("$defaultpaper"))->clone ());
 757                 scm_gc_unprotect_object ($$->paper_->self_scm ());
 758                 $$->header_ = THIS->lexer_->lookup_identifier ("$globalheader");
 759         }
 760         | book_body paper_block {
 761                 $$->paper_ = $2;
 762                 scm_gc_unprotect_object ($2->self_scm ());
 763         }
 764         | book_body score_block {
 765                 SCM s = $2->self_scm ();
 766                 $$->add_score (s);
 767                 scm_gc_unprotect_object (s);
 768         }
 769         | book_body full_markup {
 770                 $$->add_score ($2);
 771         }
 772         | book_body lilypond_header {
 773                 $$->header_ = $2;
 774         }
 775         | book_body error {
 776                 $$->paper_ = 0;
 777                 $$->scores_ = SCM_EOL;
 778         }
 779         | book_body object_id_setting {
 780                 $$->user_key_ = ly_scm2string ($2);
 781         }
 782         ;
 783
 784 score_block:
 785         SCORE '{' score_body '}'        {
 786                 $$ = $3;
 787         }
 788         ;
 789
 790 score_body:
 791         /**/    {
 792                 $$ = new Score;
 793                 $$->set_spot (@$);
 794         }
 795         | SCORE_IDENTIFIER {
 796                 $$ = new Score ( *unsmob_score ($1));
 797                 $$->set_spot (@$);
 798         }
 799         | score_body object_id_setting {
 800                 $$->user_key_ = ly_scm2string ($2);
 801         }
 802         | score_body Music {
 803                 SCM m = $2->self_scm ();
 804                 scm_gc_unprotect_object (m);
 805                 $$->set_music (m, THIS->self_scm ());
 806         }
 807         | score_body lilypond_header    {
 808                 $$->header_ = $2;
 809         }
 810         | score_body output_def {
 811                 if ($2->lookup_variable (ly_symbol2scm ("is-paper")) == SCM_BOOL_T)
 812                 {
 813                         THIS->parser_error (@2, _("\\paper cannot be used in \\score, use \\layout instead"));
 814
 815                 }
 816                 else
 817                 {
 818                         $$->defs_.push ($2);
 819                 }
 820                 scm_gc_unprotect_object ($2->self_scm ());
 821         }
 822         | score_body error {
 823                 $$->error_found_ = true;
 824         }
 825         ;
 826
 827
 828 /*
 829         OUTPUT DEF
 830 */
 831
 832 paper_block:
 833         output_def {
 834                 $$ = $1;
 835                 if ($$->lookup_variable (ly_symbol2scm ("is-paper")) != SCM_BOOL_T)
 836                 {
 837                         THIS->parser_error (@1, _ ("need \\paper for paper block"));
 838                         $$ = get_paper (THIS);
 839                 }
 840         }
 841         ;
 842
 843
 844 output_def:
 845         output_def_body '}' {
 846                 $$ = $1;
 847
 848                 THIS->lexer_->remove_scope ();
 849                 THIS->lexer_->pop_state ();
 850         }
 851         ;
 852
 853 output_def_head:
 854         PAPER {
 855                 $$ = get_paper (THIS);
 856                 $$->input_origin_ = @$;
 857                 THIS->lexer_->add_scope ($$->scope_);
 858         }
 859         | MIDI    {
 860                 Output_def *p = get_midi (THIS);
 861                 $$ = p;
 862                 THIS->lexer_->add_scope (p->scope_);
 863         }
 864         | LAYOUT        {
 865                 Output_def *p = get_layout (THIS);
 866
 867                 THIS->lexer_->add_scope (p->scope_);
 868                 $$ = p;
 869         }
 870         ;
 871
 872
 873 output_def_body:
 874         output_def_head '{' {
 875                 $$ = $1;
 876                 $$->input_origin_.set_spot (@$);
 877                 THIS->lexer_->push_initial_state ();
 878         }
 879         | output_def_head '{' OUTPUT_DEF_IDENTIFIER     {
 880                 scm_gc_unprotect_object ($1->self_scm ());
 881                 Output_def *o = unsmob_output_def ($3);
 882                 o->input_origin_.set_spot (@$);
 883                 $$ = o;
 884                 THIS->lexer_->remove_scope ();
 885                 THIS->lexer_->add_scope (o->scope_);
 886                 THIS->lexer_->push_initial_state ();
 887         }
 888         | output_def_body assignment  {
 889
 890         }
 891         | output_def_body context_def_spec_block        {
 892                 assign_context_def ($$, $2);
 893         }
 894         | output_def_body tempo_event  {
 895                 /*
 896                         junk this ? there already is tempo stuff in
 897                         music.
 898                 */
 899                 int m = scm_to_int ($2->get_property ("metronome-count"));
 900                 Duration *d = unsmob_duration ($2->get_property ("tempo-unit"));
 901                 set_tempo ($$, d->get_length (), m);
 902                 scm_gc_unprotect_object ($2->self_scm ());
 903         }
 904         | output_def_body error {
 905
 906         }
 907         ;
 908
 909 tempo_event:
 910         TEMPO steno_duration '=' bare_unsigned  {
 911                 $$ = MY_MAKE_MUSIC ("MetronomeChangeEvent");
 912                 $$->set_property ("tempo-unit", $2);
 913                 $$->set_property ("metronome-count", scm_int2num ( $4));
 914         }
 915         ;
 916
 917 /*
 918 The representation of a  list is the
 919
 920   (LIST . LAST-CONS)
 921
 922  to have efficient append.  */
 923
 924 Music_list:
 925         /* empty */ {
 926                 $$ = scm_cons (SCM_EOL, SCM_EOL);
 927         }
 928         | Music_list Music {
 929                 SCM s = $$;
 930                 SCM c = scm_cons ($2->self_scm (), SCM_EOL);
 931                 scm_gc_unprotect_object ($2->self_scm ()); /* UGH */
 932
 933                 if (scm_is_pair (scm_cdr (s)))
 934                         scm_set_cdr_x (scm_cdr (s), c); /* append */
 935                 else
 936                         scm_set_car_x (s, c); /* set first cons */
 937                 scm_set_cdr_x (s, c);  /* remember last cell */
 938         }
 939         | Music_list embedded_scm {
 940
 941         }
 942         | Music_list error {
 943                 Music * m = MY_MAKE_MUSIC("Music");
 944                 // ugh. code dup
 945                 m->set_property ("error-found", SCM_BOOL_T);
 946                 SCM s = $$;
 947                 SCM c = scm_cons (m->self_scm (), SCM_EOL);
 948                 scm_gc_unprotect_object (m->self_scm ()); /* UGH */
 949
 950                 if (scm_is_pair (scm_cdr (s)))
 951                         scm_set_cdr_x (scm_cdr (s), c); /* append */
 952                 else
 953                         scm_set_car_x (s, c); /* set first cons */
 954                 scm_set_cdr_x (s, c);  /* remember last cell */
 955         }
 956         ;
 957
 958 Music:
 959         Simple_music
 960         | Composite_music
 961         ;
 962
 963 Alternative_music:
 964         /* empty */ {
 965                 $$ = SCM_EOL;
 966         }
 967         | ALTERNATIVE '{' Music_list '}' {
 968                 $$ = $3;
 969         }
 970         ;
 971
 972
 973 Repeated_music:
 974         REPEAT simple_string bare_unsigned Music Alternative_music
 975         {
 976                 Music *beg = $4;
 977                 int times = $3;
 978                 SCM alts = scm_is_pair ($5) ? scm_car ($5) : SCM_EOL;
 979                 if (times < scm_ilength (alts)) {
 980                   unsmob_music (scm_car (alts))
 981                     ->origin ()->warning (
 982                     _ ("more alternatives than repeats"));
 983                     warning ("junking excess alternatives");
 984                   alts = ly_truncate_list (times, alts);
 985                 }
 986
 987
 988                 SCM proc = ly_lily_module_constant ("make-repeated-music");
 989
 990                 SCM mus = scm_call_1 (proc, $2);
 991                 scm_gc_protect_object (mus); // UGH.
 992                 Music *r = unsmob_music (mus);
 993                 if (beg)
 994                         {
 995                         r-> set_property ("element", beg->self_scm ());
 996                         scm_gc_unprotect_object (beg->self_scm ());
 997                         }
 998                 r->set_property ("repeat-count", scm_int2num (times >? 1));
 999
1000                 r-> set_property ("elements",alts);
1001                 if (ly_c_equal_p ($2, scm_makfrom0str ("tremolo"))) {
1002                         /*
1003                         TODO: move this code to Scheme.
1004                         */
1005
1006                         /* we cannot get durations and other stuff
1007                            correct down the line,
1008                            so we have to add to the duration log here. */
1009                         SCM func = ly_lily_module_constant ("shift-duration-log");
1010
1011                         int dots = ($3 % 3) ? 0 : 1;
1012                         int shift = -intlog2 ((dots) ? ($3*2/3) : $3);
1013
1014
1015                         if ($4->is_mus_type ("sequential-music"))
1016                         {
1017                                 int list_len = scm_ilength ($4->get_property ("elements"));
1018                                 if (list_len != 2)
1019                                         $4->origin ()->warning (_f ("expect 2 elements for Chord tremolo, found %d", list_len));
1020                                 shift -= 1;
1021                                 r->compress (Moment (Rational (1, list_len)));
1022                         }
1023                         scm_call_3 (func, r->self_scm (), scm_int2num (shift), scm_int2num (dots));
1024
1025                 }
1026                 r->set_spot (*$4->origin ());
1027
1028                 $$ = r;
1029         }
1030         ;
1031
1032 Sequential_music:
1033         SEQUENTIAL '{' Music_list '}'           {
1034                 $$ = MY_MAKE_MUSIC ("SequentialMusic");
1035                 $$->set_property ("elements", scm_car ($3));
1036                 $$->set_spot (@$);
1037         }
1038         | '{' Music_list '}'            {
1039                 $$ = MY_MAKE_MUSIC ("SequentialMusic");
1040                 $$->set_property ("elements", scm_car ($2));
1041                 $$->set_spot (@$);
1042         }
1043         ;
1044
1045 Simultaneous_music:
1046         SIMULTANEOUS '{' Music_list '}'{
1047                 $$ = MY_MAKE_MUSIC ("SimultaneousMusic");
1048                 $$->set_property ("elements", scm_car ($3));
1049                 $$->set_spot (@$);
1050
1051         }
1052         | simul_open Music_list simul_close     {
1053                 $$ = MY_MAKE_MUSIC ("SimultaneousMusic");
1054                 $$->set_property ("elements", scm_car ($2));
1055                 $$->set_spot (@$);
1056         }
1057         ;
1058
1059 Simple_music:
1060         event_chord             { $$ = $1; }
1061         | MUSIC_IDENTIFIER {
1062                 $$ = unsmob_music ($1);
1063         }
1064         | music_property_def
1065         | context_change
1066         ;
1067
1068
1069 optional_context_mod:
1070         /**/ { $$ = SCM_EOL; }
1071         | WITH { THIS->lexer_->push_initial_state (); }
1072         '{' context_mod_list '}'
1073         {
1074                 THIS->lexer_->pop_state ();
1075                 $$ = $4;
1076         }
1077         ;
1078
1079 context_mod_list:
1080         /* */  { $$ = SCM_EOL; }
1081         | context_mod_list context_mod  {
1082                  $$ = scm_cons ($2, $1);
1083         }
1084         ;
1085
1086
1087 Composite_music:
1088         Prefix_composite_music { $$ = $1; }
1089         | Grouped_music_list { $$ = $1; }
1090         ;
1091
1092 Grouped_music_list:
1093         Simultaneous_music              { $$ = $1; }
1094         | Sequential_music              { $$ = $1; }
1095         ;
1096
1097 Generic_prefix_music_scm:
1098         MUSIC_FUNCTION {
1099                 $$ = scm_list_2 ($1, make_input (@$));
1100         }
1101         | MUSIC_FUNCTION_SCM embedded_scm {
1102                 $$ = scm_list_3 ($1, make_input (@$), $2);
1103         }
1104         | MUSIC_FUNCTION_MARKUP full_markup {
1105                 $$ = scm_list_3 ($1, make_input (@$), $2);
1106         }
1107         | MUSIC_FUNCTION_MUSIC Music {
1108                 $$ = scm_list_3 ($1, make_input (@$), $2->self_scm ());
1109                 scm_gc_unprotect_object ($2->self_scm ());
1110         }
1111         | MUSIC_FUNCTION_SCM_MUSIC embedded_scm Music {
1112                 $$ = scm_list_4 ($1, make_input (@$), $2, $3->self_scm ());
1113                 scm_gc_unprotect_object ($3->self_scm ());
1114         }
1115         | MUSIC_FUNCTION_SCM_SCM embedded_scm embedded_scm {
1116                 $$ = scm_list_4 ($1, make_input (@$), $2, $3);
1117         }
1118         | MUSIC_FUNCTION_SCM_SCM_MUSIC embedded_scm embedded_scm Music {
1119                 $$ = scm_list_5 ($1, make_input (@$), $2, $3, $4->self_scm ());
1120         }
1121         | MUSIC_FUNCTION_MARKUP_MUSIC full_markup Music {
1122                 $$ = scm_list_4 ($1, make_input (@$), $2, $3->self_scm ());
1123                 scm_gc_unprotect_object ($3->self_scm ());
1124         }
1125         | MUSIC_FUNCTION_MARKUP_MARKUP full_markup full_markup {
1126                 $$ = scm_list_4 ($1, make_input (@$), $2, $3);
1127         }
1128         | MUSIC_FUNCTION_MUSIC_MUSIC Music Music {
1129                 $$ = scm_list_4 ($1, make_input (@$), $2->self_scm (), $3->self_scm ());
1130                 scm_gc_unprotect_object ($2->self_scm ());
1131                 scm_gc_unprotect_object ($3->self_scm ());
1132         }
1133         | MUSIC_FUNCTION_SCM_MUSIC_MUSIC embedded_scm Music Music {
1134                 $$ = scm_list_5 ($1, make_input (@$), $2, $3->self_scm (), $4->self_scm ());
1135                 scm_gc_unprotect_object ($4->self_scm ());
1136                 scm_gc_unprotect_object ($3->self_scm ());
1137         }
1138         | MUSIC_FUNCTION_MARKUP_MUSIC_MUSIC full_markup Music Music {
1139                 $$ = scm_list_5 ($1, make_input (@$), $2, $3->self_scm (), $4->self_scm ());
1140                 scm_gc_unprotect_object ($3->self_scm ());
1141                 scm_gc_unprotect_object ($4->self_scm ());
1142         }
1143         ;
1144
1145 Generic_prefix_music:
1146         Generic_prefix_music_scm {
1147                 SCM func = scm_car ($1);
1148                 Input *loc = unsmob_input (scm_cadr ($1));
1149                 SCM args = scm_cddr ($1);
1150                 SCM sig = scm_object_property (func, ly_symbol2scm ("music-function-signature"));
1151
1152                 SCM type_check_proc = ly_lily_module_constant ("type-check-list");
1153                 bool ok  = true;
1154
1155                 if (!to_boolean (scm_call_3  (type_check_proc, scm_cadr ($1), sig, args)))
1156                 {
1157                         THIS->error_level_ = 1;
1158                         ok = false;
1159                 }
1160
1161                 SCM m = SCM_EOL;
1162                 if (ok)
1163                         m = scm_apply_0 (func, scm_cons (THIS->self_scm(),
1164                                                          scm_cdr ($1)));
1165
1166                 if (unsmob_music (m))
1167                         {
1168                         $$ = unsmob_music (m);
1169                         scm_gc_protect_object (m);
1170                         }
1171                 else
1172                         {
1173                         if (ok)
1174                                 loc->error (_ ("music head function must return Music object"));
1175                         $$ = MY_MAKE_MUSIC ("Music");
1176                         }
1177                 $$->set_spot (*loc);
1178         }
1179         ;
1180
1181
1182 Prefix_composite_music:
1183         Generic_prefix_music {
1184                 $$ = $1;
1185         }
1186         | CONTEXT simple_string '=' simple_string optional_context_mod Music {
1187                 $$ = context_spec_music ($2, $4, $6, $5);
1188
1189         }
1190         | CONTEXT simple_string optional_context_mod Music {
1191                 $$ = context_spec_music ($2, SCM_UNDEFINED, $4, $3);
1192         }
1193         | NEWCONTEXT simple_string optional_context_mod Music {
1194                 $$ = context_spec_music ($2, get_next_unique_context_id (), $4,
1195                         $3);
1196         }
1197
1198         | TIMES fraction Music
1199
1200         {
1201                 int n = scm_to_int (scm_car ($2)); int d = scm_to_int (scm_cdr ($2));
1202                 Music *mp = $3;
1203
1204                 $$= MY_MAKE_MUSIC ("TimeScaledMusic");
1205                 $$->set_spot (@$);
1206
1207                 $$->set_property ("element", mp->self_scm ());
1208                 scm_gc_unprotect_object (mp->self_scm ());
1209                 $$->set_property ("numerator", scm_int2num (n));
1210                 $$->set_property ("denominator", scm_int2num (d));
1211                 $$->compress (Moment (Rational (n,d)));
1212
1213         }
1214         | Repeated_music                { $$ = $1; }
1215         | TRANSPOSE pitch_also_in_chords pitch_also_in_chords Music {
1216                 $$ = MY_MAKE_MUSIC ("TransposedMusic");
1217                 Music *p = $4;
1218                 Pitch from = *unsmob_pitch ($2);
1219                 Pitch to = *unsmob_pitch ($3);
1220
1221                 p->transpose (pitch_interval (from, to));
1222                 $$->set_property ("element", p->self_scm ());
1223                 scm_gc_unprotect_object (p->self_scm ());
1224         }
1225         | mode_changing_head Grouped_music_list {
1226                 if ($1 == ly_symbol2scm ("chords"))
1227                 {
1228                   Music *chm = MY_MAKE_MUSIC ("UnrelativableMusic");
1229                   chm->set_property ("element", $2->self_scm ());
1230                   $$ = chm;
1231                   scm_gc_unprotect_object ($2->self_scm ());
1232                 }
1233                 else
1234                 {
1235                   $$ = $2;
1236                 }
1237                 THIS->lexer_->pop_state ();
1238         }
1239         | mode_changing_head_with_context optional_context_mod Grouped_music_list {
1240                 $$ = context_spec_music ($1, get_next_unique_context_id (),
1241                                          $3, $2);
1242                 if ($1 == ly_symbol2scm ("ChordNames"))
1243                 {
1244                   Music *chm = MY_MAKE_MUSIC ("UnrelativableMusic");
1245                   chm->set_property ("element", $$->self_scm ());
1246                   scm_gc_unprotect_object ($$->self_scm ());
1247                   $$ = chm;
1248                 }
1249                 THIS->lexer_->pop_state ();
1250         }
1251         | relative_music        { $$ = $1; }
1252         | re_rhythmed_music     { $$ = $1; }
1253         | TAG embedded_scm Music {
1254                 tag_music ($3, $2, @$);
1255                 $$ = $3;
1256         }
1257         ;
1258
1259 mode_changing_head:
1260         NOTEMODE {
1261                 SCM nn = THIS->lexer_->lookup_identifier ("pitchnames");
1262                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1263
1264                 $$ = ly_symbol2scm ("notes");
1265         }
1266         | DRUMMODE
1267                 {
1268                 SCM nn = THIS->lexer_->lookup_identifier ("drumPitchNames");
1269                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1270
1271                 $$ = ly_symbol2scm ("drums");
1272         }
1273         | FIGUREMODE {
1274                 THIS->lexer_->push_figuredbass_state ();
1275
1276                 $$ = ly_symbol2scm ("figures");
1277         }
1278         | CHORDMODE {
1279                 SCM nn = THIS->lexer_->lookup_identifier ("chordmodifiers");
1280                 THIS->lexer_->chordmodifier_tab_ = alist_to_hashq (nn);
1281                 nn = THIS->lexer_->lookup_identifier ("pitchnames");
1282                 THIS->lexer_->push_chord_state (alist_to_hashq (nn));
1283                 $$ = ly_symbol2scm ("chords");
1284
1285         }
1286         | LYRICMODE
1287                 { THIS->lexer_->push_lyric_state ();
1288                 $$ = ly_symbol2scm ("lyrics");
1289         }
1290         ;
1291
1292 mode_changing_head_with_context:
1293         DRUMS {
1294                 SCM nn = THIS->lexer_->lookup_identifier ("drumPitchNames");
1295                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
1296
1297                 $$ = ly_symbol2scm ("DrumStaff");
1298         }
1299         | FIGURES {
1300                 THIS->lexer_->push_figuredbass_state ();
1301
1302                 $$ = ly_symbol2scm ("FiguredBass");
1303         }
1304         | CHORDS {
1305                 SCM nn = THIS->lexer_->lookup_identifier ("chordmodifiers");
1306                 THIS->lexer_->chordmodifier_tab_ = alist_to_hashq (nn);
1307                 nn = THIS->lexer_->lookup_identifier ("pitchnames");
1308                 THIS->lexer_->push_chord_state (alist_to_hashq (nn));
1309                 $$ = ly_symbol2scm ("ChordNames");
1310         }
1311         | LYRICS
1312                 { THIS->lexer_->push_lyric_state ();
1313                 $$ = ly_symbol2scm ("Lyrics");
1314         }
1315         ;
1316
1317
1318 relative_music:
1319         RELATIVE absolute_pitch Music {
1320                 Music *m = $3;
1321                 Pitch start = *unsmob_pitch ($2);
1322                 $$ = make_music_relative (start, m);
1323                 scm_gc_unprotect_object (m->self_scm ());
1324         }
1325         | RELATIVE Composite_music {
1326                 Music *m = $2;
1327
1328                 Pitch middle_c (0, 0, 0);
1329                 $$ = make_music_relative (middle_c, m);
1330                 scm_gc_unprotect_object (m->self_scm ());
1331         }
1332         ;
1333
1334 new_lyrics:
1335         ADDLYRICS { THIS->lexer_->push_lyric_state (); }
1336         /*cont */
1337         Grouped_music_list {
1338         /* Can also use Music at the expensive of two S/Rs similar to
1339            \repeat \alternative */
1340                 THIS->lexer_->pop_state ();
1341
1342                 $$ = scm_cons ($3->self_scm (), SCM_EOL);
1343         }
1344         | new_lyrics ADDLYRICS {
1345                 THIS->lexer_->push_lyric_state ();
1346         } Grouped_music_list {
1347                 THIS->lexer_->pop_state ();
1348                 $$ = scm_cons ($4->self_scm (), $1);
1349         }
1350         ;
1351
1352 re_rhythmed_music:
1353         Grouped_music_list new_lyrics {
1354                 Music * voice = $1;
1355                 SCM name = get_first_context_id (scm_makfrom0str ("Voice"), voice);
1356                 if (!scm_is_string (name))
1357                 {
1358                         name = get_next_unique_lyrics_context_id ();
1359                         voice = context_spec_music (scm_makfrom0str ("Voice"),
1360                                                     name,
1361                                                     voice, SCM_EOL);
1362                 }
1363
1364                 SCM context = scm_makfrom0str ("Lyrics");
1365                 Music *all = MY_MAKE_MUSIC ("SimultaneousMusic");
1366
1367                 SCM lst = SCM_EOL;
1368                 for (SCM s = $2; scm_is_pair (s); s = scm_cdr (s))
1369                 {
1370                         Music *music = unsmob_music (scm_car (s));
1371                         Music *com = make_lyric_combine_music (name, music);
1372                         Music *csm = context_spec_music (context,
1373                                 get_next_unique_context_id (), com, SCM_EOL);
1374                         lst = scm_cons (csm->self_scm (), lst);
1375                 }
1376                 all->set_property ("elements", scm_cons (voice->self_scm (),
1377                         lst));
1378                 $$ = all;
1379                 scm_gc_unprotect_object (voice->self_scm ());
1380         }
1381         | LYRICSTO simple_string {
1382                 THIS->lexer_->push_lyric_state ();
1383         } Music {
1384                 THIS->lexer_->pop_state ();
1385                 Music *music = $4;
1386                 SCM name = $2;
1387                 $$ = make_lyric_combine_music (name, music);
1388                 scm_gc_unprotect_object (music->self_scm ());
1389         }
1390         ;
1391
1392 context_change:
1393         CHANGE STRING '=' STRING  {
1394                 Music*t = MY_MAKE_MUSIC ("ContextChange");
1395                 t-> set_property ("change-to-type", scm_string_to_symbol ($2));
1396                 t-> set_property ("change-to-id", $4);
1397
1398                 $$ = t;
1399                 $$->set_spot (@$);
1400         }
1401         ;
1402
1403 property_operation:
1404         STRING '=' scalar {
1405                 $$ = scm_list_3 (ly_symbol2scm ("assign"),
1406                         scm_string_to_symbol ($1), $3);
1407         }
1408         | UNSET simple_string {
1409                 $$ = scm_list_2 (ly_symbol2scm ("unset"),
1410                         scm_string_to_symbol ($2));
1411         }
1412         | OVERRIDE simple_string embedded_scm '=' embedded_scm {
1413                 $$ = scm_list_4 (ly_symbol2scm ("push"),
1414                         scm_string_to_symbol ($2), $3, $5);
1415         }
1416         | REVERT simple_string embedded_scm {
1417                 $$ = scm_list_3 (ly_symbol2scm ("pop"),
1418                         scm_string_to_symbol ($2), $3);
1419         }
1420         ;
1421
1422 context_def_mod:
1423         CONSISTS { $$ = ly_symbol2scm ("consists"); }
1424         | REMOVE { $$ = ly_symbol2scm ("remove"); }
1425
1426         | ACCEPTS { $$ = ly_symbol2scm ("accepts"); }
1427         | DEFAULTCHILD { $$ = ly_symbol2scm ("default-child"); }
1428         | DENIES { $$ = ly_symbol2scm ("denies"); }
1429
1430         | ALIAS { $$ = ly_symbol2scm ("alias"); }
1431         | TYPE { $$ = ly_symbol2scm ("translator-type"); }
1432         | DESCRIPTION { $$ = ly_symbol2scm ("description"); }
1433         | NAME { $$ = ly_symbol2scm ("context-name"); }
1434         ;
1435
1436 context_mod:
1437         property_operation { $$ = $1; }
1438         | context_def_mod STRING {
1439                 $$ = scm_list_2 ($1, $2);
1440         }
1441         ;
1442
1443 context_prop_spec:
1444         simple_string {
1445                 if (!is_regular_identifier ($1))
1446                 {
1447                         @$.error (_("Grob name should be alphanumeric"));
1448                 }
1449
1450                 $$ = scm_list_2 (ly_symbol2scm ("Bottom"),
1451                         scm_string_to_symbol ($1));
1452         }
1453         | simple_string '.' simple_string {
1454                 $$ = scm_list_2 (scm_string_to_symbol ($1),
1455                         scm_string_to_symbol ($3));
1456         }
1457         ;
1458
1459 music_property_def:
1460         OVERRIDE context_prop_spec embedded_scm '=' scalar {
1461                 $$ = property_op_to_music (scm_list_4 (
1462                         ly_symbol2scm ("poppush"),
1463                         scm_cadr ($2),
1464                         $3, $5));
1465                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1466         }
1467         | REVERT context_prop_spec embedded_scm {
1468                 $$ = property_op_to_music (scm_list_3 (
1469                         ly_symbol2scm ("pop"),
1470                         scm_cadr ($2),
1471                         $3));
1472
1473                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1474         }
1475         | SET context_prop_spec '=' scalar {
1476                 $$ = property_op_to_music (scm_list_3 (
1477                         ly_symbol2scm ("assign"),
1478                         scm_cadr ($2),
1479                         $4));
1480                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1481         }
1482         | UNSET context_prop_spec {
1483                 $$ = property_op_to_music (scm_list_2 (
1484                         ly_symbol2scm ("unset"),
1485                         scm_cadr ($2)));
1486                 $$= context_spec_music (scm_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
1487         }
1488         | ONCE music_property_def {
1489                 SCM e = $2->get_property ("element");
1490                 unsmob_music (e)->set_property ("once", SCM_BOOL_T);
1491                 $$ = $2;
1492
1493         }
1494         ;
1495
1496
1497 string:
1498         STRING {
1499                 $$ = $1;
1500         }
1501         | STRING_IDENTIFIER {
1502                 $$ = $1;
1503         }
1504         | string '+' string {
1505                 $$ = scm_string_append (scm_list_2 ($1, $3));
1506         }
1507         ;
1508
1509 simple_string: STRING {
1510                 $$ = $1;
1511         }
1512         | LYRICS_STRING {
1513                 $$ = $1;
1514         }
1515         ;
1516
1517 scalar: string {
1518                 $$ = $1;
1519         }
1520         | LYRICS_STRING {
1521                 $$ = $1;
1522         }
1523         | bare_int {
1524                 $$ = scm_int2num ($1);
1525         }
1526         | embedded_scm {
1527                 $$ = $1;
1528         }
1529         | full_markup {
1530                 $$ = $1;
1531         }
1532         | DIGIT {
1533                 $$ = scm_int2num ($1);
1534         }
1535         ;
1536
1537 /*
1538
1539 pre_events doesn't contain anything. It is a trick:
1540
1541 Adding pre_events to the simple_element
1542 makes the choice between
1543
1544   string:  STRING
1545
1546 and
1547
1548   simple_element: STRING
1549
1550 a single shift/reduction conflict.
1551
1552 nevertheless, this is not very clean, and we should find a different
1553 solution.
1554
1555 */
1556 pre_events: /* empty */
1557         ;
1558
1559 event_chord:
1560         pre_events simple_element post_events   {
1561                 SCM elts = $2-> get_property ("elements");
1562
1563                 elts = ly_append2 (elts, scm_reverse_x ($3, SCM_EOL));
1564
1565                 $2->set_property ("elements", elts);
1566                 /* why is this giving wrong start location? -ns
1567                  * $2->set_spot (@$); */
1568                 Input i;
1569                 i.set_location (@2, @3);
1570                 $2->set_spot (i);
1571                 $$ = $2;
1572         }
1573         | command_element
1574         | note_chord_element
1575         ;
1576
1577
1578 note_chord_element:
1579         chord_body optional_notemode_duration post_events
1580         {
1581                 SCM dur = unsmob_duration ($2)->smobbed_copy ();
1582                 SCM es = $1->get_property ("elements");
1583                 SCM postevs = scm_reverse_x ($3, SCM_EOL);
1584
1585                 for (SCM s = es; scm_is_pair (s); s = scm_cdr (s))
1586                   unsmob_music (scm_car (s))->set_property ("duration", dur);
1587                 es = ly_append2 (es, postevs);
1588
1589                 $1-> set_property ("elements", es);
1590                 $1->set_spot (@$);
1591                 $$ = $1;
1592         }
1593         ;
1594
1595 chord_open: '<'
1596         ;
1597
1598 chord_close: '>'
1599         ;
1600
1601 simul_open: DOUBLE_ANGLE_OPEN
1602         ;
1603
1604 simul_close: DOUBLE_ANGLE_CLOSE
1605         ;
1606
1607 chord_body:
1608         chord_open chord_body_elements chord_close
1609         {
1610                 $$ = MY_MAKE_MUSIC ("EventChord");
1611                 $$->set_spot (@$);
1612                 $$->set_property ("elements",
1613                         scm_reverse_x ($2, SCM_EOL));
1614         }
1615         ;
1616
1617 chord_body_elements:
1618         /* empty */             { $$ = SCM_EOL; }
1619         | chord_body_elements chord_body_element {
1620                 $$ = scm_cons ($2->self_scm (), $1);
1621                 scm_gc_unprotect_object ($2->self_scm ());
1622         }
1623         ;
1624
1625 chord_body_element:
1626         pitch exclamations questions octave_check post_events
1627         {
1628                 int q = $3;
1629                 int ex = $2;
1630                 SCM check = $4;
1631                 SCM post = $5;
1632
1633                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
1634                 n->set_property ("pitch", $1);
1635                 n->set_spot (@$);
1636                 if (q % 2)
1637                         n->set_property ("cautionary", SCM_BOOL_T);
1638                 if (ex % 2 || q % 2)
1639                         n->set_property ("force-accidental", SCM_BOOL_T);
1640
1641                 if (scm_is_pair (post)) {
1642                         SCM arts = scm_reverse_x (post, SCM_EOL);
1643                         n->set_property ("articulations", arts);
1644                 }
1645                 if (scm_is_number (check))
1646                 {
1647                         int q = scm_to_int (check);
1648                         n->set_property ("absolute-octave", scm_int2num (q-1));
1649                 }
1650
1651
1652                 $$ = n;
1653         }
1654         | DRUM_PITCH post_events {
1655                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
1656                 n->set_property ("duration", $2);
1657                 n->set_property ("drum-type", $1);
1658                 n->set_spot (@$);
1659
1660                 if (scm_is_pair ($2)) {
1661                         SCM arts = scm_reverse_x ($2, SCM_EOL);
1662                         n->set_property ("articulations", arts);
1663                 }
1664                 $$ = n;
1665         }
1666         ;
1667
1668 add_quote:
1669         ADDQUOTE string Music {
1670                 SCM adder = ly_lily_module_constant ("add-quotable");
1671
1672                 scm_call_2 (adder, $2, $3->self_scm ());
1673                 scm_gc_unprotect_object ($3->self_scm ());
1674         }
1675         ;
1676
1677 command_element:
1678         command_req {
1679                 $$ = MY_MAKE_MUSIC ("EventChord");
1680                 $$->set_property ("elements", scm_cons ($1->self_scm (), SCM_EOL));
1681                 scm_gc_unprotect_object ($1->self_scm ());
1682
1683                 $$-> set_spot (@$);
1684                 $1-> set_spot (@$);
1685         }
1686         | SKIP duration_length {
1687                 Music *skip = MY_MAKE_MUSIC ("SkipMusic");
1688                 skip->set_property ("duration", $2);
1689                 skip->set_spot (@$);
1690                 $$ = skip;
1691         }
1692         | OCTAVE pitch {
1693                 Music *m = MY_MAKE_MUSIC ("RelativeOctaveCheck");
1694                 $$ = m;
1695                 $$->set_spot (@$);
1696                 $$->set_property ("pitch", $2);
1697         }
1698         | E_BRACKET_OPEN {
1699                 Music *m = MY_MAKE_MUSIC ("LigatureEvent");
1700                 m->set_property ("span-direction", scm_int2num (START));
1701                 m->set_spot (@$);
1702
1703                 $$ = MY_MAKE_MUSIC ("EventChord");
1704                 $$->set_property ("elements", scm_cons (m->self_scm (), SCM_EOL));
1705                 scm_gc_unprotect_object (m->self_scm ());
1706                 $$->set_spot (@$);
1707         }
1708         | E_BRACKET_CLOSE {
1709                 Music *m = MY_MAKE_MUSIC ("LigatureEvent");
1710                 m->set_property ("span-direction", scm_int2num (STOP));
1711                 m->set_spot (@$);
1712
1713                 $$ = MY_MAKE_MUSIC ("EventChord");
1714                 $$->set_property ("elements", scm_cons (m->self_scm (), SCM_EOL));
1715                 $$->set_spot (@$);
1716                 scm_gc_unprotect_object (m->self_scm ());
1717         }
1718         | E_BACKSLASH {
1719                 $$ = MY_MAKE_MUSIC ("VoiceSeparator");
1720                 $$->set_spot (@$);
1721         }
1722         | '|'      {
1723                 SCM pipe = THIS->lexer_->lookup_identifier ("pipeSymbol");
1724
1725                 if (Music * m = unsmob_music (pipe))
1726                         $$ = m->clone ();
1727                 else
1728                         $$ = MY_MAKE_MUSIC ("BarCheck");
1729
1730                 $$->set_spot (@$);
1731         }
1732         | TRANSPOSITION pitch {
1733                 Pitch middle_c;
1734                 Pitch sounds_as_c = pitch_interval (*unsmob_pitch ($2), middle_c);
1735                 $$ = set_property_music (ly_symbol2scm ("instrumentTransposition"),
1736                                          sounds_as_c.smobbed_copy());
1737                 $$->set_spot (@$);
1738                 $$ = context_spec_music (ly_symbol2scm ("Staff"), SCM_UNDEFINED,
1739                         $$, SCM_EOL);
1740         }
1741         | BAR STRING                    {
1742                 Music *t = set_property_music (ly_symbol2scm ("whichBar"), $2);
1743
1744                 Music *csm = context_spec_music (ly_symbol2scm ("Timing"), SCM_UNDEFINED,
1745                                         t, SCM_EOL);
1746                 $$ = context_spec_music (ly_symbol2scm ("Score"), SCM_UNDEFINED, csm, SCM_EOL);
1747                 $$->set_spot (@$);
1748                 t->set_spot (@$);
1749         }
1750         | PARTIAL duration_length       {
1751                 Moment m = - unsmob_duration ($2)->get_length ();
1752                 Music *p = set_property_music (ly_symbol2scm ( "measurePosition"),m.smobbed_copy ());
1753                 p->set_spot (@$);
1754                 p = context_spec_music (ly_symbol2scm ("Timing"), SCM_UNDEFINED,
1755                                         p, SCM_EOL);
1756                 p = context_spec_music (ly_symbol2scm ("Score"), SCM_UNDEFINED,
1757                                         p, SCM_EOL);
1758                 $$ = p;
1759         }
1760         | CLEF STRING  {
1761                 SCM proc = ly_lily_module_constant ("make-clef-set");
1762
1763                 SCM result = scm_call_1 (proc, $2);
1764                 scm_gc_protect_object (result);
1765                 $$ = unsmob_music (result);
1766         }
1767         | TIME_T fraction  {
1768                 SCM proc = ly_lily_module_constant ("make-time-signature-set");
1769
1770                 SCM result = scm_apply_2   (proc, scm_car ($2), scm_cdr ($2), SCM_EOL);
1771                 scm_gc_protect_object (result);
1772                 $$ = unsmob_music (result);
1773         }
1774         | MARK scalar {
1775                 SCM proc = ly_lily_module_constant ("make-mark-set");
1776
1777                 SCM result = scm_call_1 (proc, $2);
1778                 scm_gc_protect_object (result);
1779                 $$ = unsmob_music (result);
1780         }
1781         ;
1782
1783 command_req:
1784         E_TILDE {
1785                 $$ = MY_MAKE_MUSIC ("PesOrFlexaEvent");
1786         }
1787         | MARK DEFAULT  {
1788                 Music *m = MY_MAKE_MUSIC ("MarkEvent");
1789                 $$ = m;
1790         }
1791         | tempo_event {
1792                 $$ = $1;
1793         }
1794         | KEY DEFAULT {
1795                 Music *key = MY_MAKE_MUSIC ("KeyChangeEvent");
1796                 $$ = key;
1797         }
1798         | KEY NOTENAME_PITCH SCM_IDENTIFIER     {
1799
1800                 Music *key = MY_MAKE_MUSIC ("KeyChangeEvent");
1801                 if (scm_ilength ($3) > 0)
1802                 {
1803                         key->set_property ("pitch-alist", $3);
1804                         key->set_property ("tonic", Pitch (0, 0, 0).smobbed_copy ());
1805                         key->transpose (* unsmob_pitch ($2));
1806                 } else {
1807                         THIS->parser_error (@3, _ ("second argument must be pitch list"));
1808                 }
1809
1810                 $$ = key;
1811         }
1812         ;
1813
1814
1815 post_events:
1816         /* empty */ {
1817                 $$ = SCM_EOL;
1818         }
1819         | post_events post_event {
1820                 $2->set_spot (@2);
1821                 $$ = scm_cons ($2->self_scm (), $$);
1822                 scm_gc_unprotect_object ($2->self_scm ());
1823         }
1824         | post_events tagged_post_event {
1825                 $2 -> set_spot (@2);
1826                 $$ = scm_cons ($2->self_scm (), $$);
1827                 scm_gc_unprotect_object ($2->self_scm ());
1828         }
1829         ;
1830
1831
1832 tagged_post_event:
1833         '-' TAG embedded_scm post_event {
1834                 tag_music ($4, $3, @$);
1835                 $$ = $4;
1836         }
1837         ;
1838
1839
1840 post_event:
1841         direction_less_event {
1842                 $$ = $1;
1843         }
1844         | HYPHEN {
1845                 if (!THIS->lexer_->is_lyric_state ())
1846                         THIS->parser_error (@1, _ ("have to be in Lyric mode for lyrics"));
1847                 $$ = MY_MAKE_MUSIC ("HyphenEvent");
1848         }
1849         | EXTENDER {
1850                 if (!THIS->lexer_->is_lyric_state ())
1851                         THIS->parser_error (@1, _ ("have to be in Lyric mode for lyrics"));
1852                 $$ = MY_MAKE_MUSIC ("ExtenderEvent");
1853         }
1854         | script_dir direction_reqd_event {
1855                 if ($1)
1856                         $2->set_property ("direction", scm_int2num ($1));
1857                 $$ = $2;
1858         }
1859         | script_dir direction_less_event {
1860                 if ($1)
1861                         $2->set_property ("direction", scm_int2num ($1));
1862                 $$ = $2;
1863         }
1864         | string_number_event
1865         ;
1866
1867 string_number_event:
1868         E_UNSIGNED {
1869                 Music *s = MY_MAKE_MUSIC ("StringNumberEvent");
1870                 s->set_property ("string-number", scm_int2num ($1));
1871                 s->set_spot (@$);
1872                 $$ = s;
1873         }
1874         ;
1875
1876 direction_less_char:
1877         '['  {
1878                 $$ = ly_symbol2scm ("bracketOpenSymbol");
1879         }
1880         | ']'  {
1881                 $$ = ly_symbol2scm ("bracketCloseSymbol");
1882         }
1883         | '~'  {
1884                 $$ = ly_symbol2scm ("tildeSymbol");
1885         }
1886         | '('  {
1887                 $$ = ly_symbol2scm ("parenthesisOpenSymbol");
1888         }
1889         | ')'  {
1890                 $$ = ly_symbol2scm ("parenthesisCloseSymbol");
1891         }
1892         | E_EXCLAMATION  {
1893                 $$ = ly_symbol2scm ("escapedExclamationSymbol");
1894         }
1895         | E_OPEN  {
1896                 $$ = ly_symbol2scm ("escapedParenthesisOpenSymbol");
1897         }
1898         | E_CLOSE  {
1899                 $$ = ly_symbol2scm ("escapedParenthesisCloseSymbol");
1900         }
1901         | E_ANGLE_CLOSE  {
1902                 $$ = ly_symbol2scm ("escapedBiggerSymbol");
1903         }
1904         | E_ANGLE_OPEN  {
1905                 $$ = ly_symbol2scm ("escapedSmallerSymbol");
1906         }
1907         ;
1908
1909 direction_less_event:
1910         direction_less_char {
1911                 SCM predefd = THIS->lexer_->lookup_identifier_symbol ($1);
1912                 Music * m = 0;
1913                 if (unsmob_music (predefd))
1914                 {
1915                         m = unsmob_music (predefd)->clone ();
1916                 }
1917                 else
1918                 {
1919                         m = MY_MAKE_MUSIC ("Music");
1920                 }
1921                 m->set_spot (@$);
1922                 $$ = m;
1923         }
1924         | EVENT_IDENTIFIER      {
1925                 $$ = unsmob_music ($1);
1926         }
1927         | tremolo_type  {
1928                Music *a = MY_MAKE_MUSIC ("TremoloEvent");
1929                a->set_spot (@$);
1930                a->set_property ("tremolo-type", scm_int2num ($1));
1931                $$ = a;
1932         }
1933         ;
1934
1935 direction_reqd_event:
1936         gen_text_def {
1937                 $$ = $1;
1938         }
1939         | script_abbreviation {
1940                 SCM s = THIS->lexer_->lookup_identifier ("dash" + ly_scm2string ($1));
1941                 Music *a = MY_MAKE_MUSIC ("ArticulationEvent");
1942                 if (scm_is_string (s))
1943                         a->set_property ("articulation-type", s);
1944                 else THIS->parser_error (@1, _ ("expecting string as script definition"));
1945                 $$ = a;
1946         }
1947         ;
1948
1949 octave_check:
1950         /**/ { $$ = SCM_EOL; }
1951         | '='  { $$ = scm_int2num (0); }
1952         | '=' sub_quotes { $$ = scm_int2num ($2); }
1953         | '=' sup_quotes { $$ = scm_int2num ($2); }
1954         ;
1955
1956 sup_quotes:
1957         '\'' {
1958                 $$ = 1;
1959         }
1960         | sup_quotes '\'' {
1961                 $$ ++;
1962         }
1963         ;
1964
1965 sub_quotes:
1966         ',' {
1967                 $$ = 1;
1968         }
1969         | sub_quotes ',' {
1970                 $$++;
1971         }
1972         ;
1973
1974 steno_pitch:
1975         NOTENAME_PITCH  {
1976                 $$ = $1;
1977         }
1978         | NOTENAME_PITCH sup_quotes     {
1979                 Pitch p = *unsmob_pitch ($1);
1980                 p = p.transposed (Pitch ($2,0,0));
1981                 $$ = p.smobbed_copy ();
1982         }
1983         | NOTENAME_PITCH sub_quotes      {
1984                 Pitch p =* unsmob_pitch ($1);
1985                 p = p.transposed (Pitch (-$2,0,0));
1986                 $$ = p.smobbed_copy ();
1987         }
1988         ;
1989
1990 /*
1991 ugh. duplication
1992 */
1993
1994 steno_tonic_pitch:
1995         TONICNAME_PITCH {
1996                 $$ = $1;
1997         }
1998         | TONICNAME_PITCH sup_quotes    {
1999                 Pitch p = *unsmob_pitch ($1);
2000                 p = p.transposed (Pitch ($2,0,0));
2001                 $$ = p.smobbed_copy ();
2002         }
2003         | TONICNAME_PITCH sub_quotes     {
2004                 Pitch p =* unsmob_pitch ($1);
2005
2006                 p = p.transposed (Pitch (-$2,0,0));
2007                 $$ = p.smobbed_copy ();
2008         }
2009         ;
2010
2011 pitch:
2012         steno_pitch {
2013                 $$ = $1;
2014         }
2015         ;
2016
2017 pitch_also_in_chords:
2018         pitch
2019         | steno_tonic_pitch
2020         ;
2021
2022 gen_text_def:
2023         full_markup {
2024                 Music *t = MY_MAKE_MUSIC ("TextScriptEvent");
2025                 t->set_property ("text", $1);
2026                 t->set_spot (@$);
2027                 $$ = t;
2028         }
2029         | string {
2030                 Music *t = MY_MAKE_MUSIC ("TextScriptEvent");
2031                 t->set_property ("text",
2032                         make_simple_markup ($1));
2033                 t->set_spot (@$);
2034                 $$ = t;
2035
2036         }
2037         | DIGIT {
2038                 Music *t = MY_MAKE_MUSIC ("FingerEvent");
2039                 t->set_property ("digit", scm_int2num ($1));
2040                 t->set_spot (@$);
2041                 $$ = t;
2042         }
2043         ;
2044
2045 script_abbreviation:
2046         '^'             {
2047                 $$ = scm_makfrom0str ("Hat");
2048         }
2049         | '+'           {
2050                 $$ = scm_makfrom0str ("Plus");
2051         }
2052         | '-'           {
2053                 $$ = scm_makfrom0str ("Dash");
2054         }
2055         | '|'           {
2056                 $$ = scm_makfrom0str ("Bar");
2057         }
2058         | '>'           {
2059                 $$ = scm_makfrom0str ("Larger");
2060         }
2061         | '.'           {
2062                 $$ = scm_makfrom0str ("Dot");
2063         }
2064         | '_' {
2065                 $$ = scm_makfrom0str ("Underscore");
2066         }
2067         ;
2068
2069 script_dir:
2070         '_'     { $$ = DOWN; }
2071         | '^'   { $$ = UP; }
2072         | '-'   { $$ = CENTER; }
2073         ;
2074
2075
2076 absolute_pitch:
2077         steno_pitch     {
2078                 $$ = $1;
2079         }
2080         ;
2081
2082 duration_length:
2083         multiplied_duration {
2084                 $$ = $1;
2085         }
2086         ;
2087
2088 optional_notemode_duration:
2089         {
2090                 Duration dd = THIS->default_duration_;
2091                 $$ = dd.smobbed_copy ();
2092
2093                 THIS->beam_check ($$);
2094         }
2095         | multiplied_duration   {
2096                 $$ = $1;
2097                 THIS->default_duration_ = *unsmob_duration ($$);
2098
2099                 THIS->beam_check ($$);
2100         }
2101         ;
2102
2103 steno_duration:
2104         bare_unsigned dots              {
2105                 int len = 0;
2106                 if (!is_duration ($1))
2107                         THIS->parser_error (@1, _f ("not a duration: %d", $1));
2108                 else
2109                         len = intlog2 ($1);
2110
2111                 $$ = Duration (len, $2).smobbed_copy ();
2112         }
2113         | DURATION_IDENTIFIER dots      {
2114                 Duration *d = unsmob_duration ($1);
2115                 Duration k (d->duration_log (), d->dot_count () + $2);
2116                 *d = k;
2117                 $$ = $1;
2118         }
2119         ;
2120
2121 multiplied_duration:
2122         steno_duration {
2123                 $$ = $1;
2124         }
2125         | multiplied_duration '*' bare_unsigned {
2126                 $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
2127         }
2128         | multiplied_duration '*' FRACTION {
2129                 Rational  m (scm_to_int (scm_car ($3)), scm_to_int (scm_cdr ($3)));
2130
2131                 $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
2132         }
2133         ;
2134
2135 fraction:
2136         FRACTION { $$ = $1; }
2137         | UNSIGNED '/' UNSIGNED {
2138                 $$ = scm_cons (scm_int2num ($1), scm_int2num ($3));
2139         }
2140         ;
2141
2142 dots:
2143         /* empty */     {
2144                 $$ = 0;
2145         }
2146         | dots '.' {
2147                 $$ ++;
2148         }
2149         ;
2150
2151 tremolo_type:
2152         ':'     {
2153                 $$ = 0;
2154         }
2155         | ':' bare_unsigned {
2156                 if (!is_duration ($2))
2157                         THIS->parser_error (@2, _f ("not a duration: %d", $2));
2158                 $$ = $2;
2159         }
2160         ;
2161
2162 bass_number:
2163         DIGIT   {
2164                 $$ = scm_number_to_string (scm_int2num ($1), scm_int2num (10));
2165                 $$ = scm_list_2 (ly_lily_module_constant ("number-markup"),
2166                                 $$);
2167         }
2168         | UNSIGNED {
2169                 $$ = scm_number_to_string (scm_int2num ($1), scm_int2num (10));
2170                 $$ = scm_list_2 (ly_lily_module_constant ("number-markup"),
2171                                 $$);
2172         }
2173         | STRING { $$ = $1; }
2174         | full_markup { $$ = $1; }
2175         ;
2176
2177 bass_mod:
2178         '-'     { $$ = -2; }
2179         | '+'   { $$ = 2; }
2180         | '!'   { $$ = 0; }
2181         ;
2182
2183 bass_figure:
2184         FIGURE_SPACE {
2185                 Music *bfr = MY_MAKE_MUSIC ("BassFigureEvent");
2186                 $$ = bfr->self_scm ();
2187                 scm_gc_unprotect_object ($$);
2188         }
2189         | bass_number  {
2190                 Music *bfr = MY_MAKE_MUSIC ("BassFigureEvent");
2191                 $$ = bfr->self_scm ();
2192
2193                 bfr->set_property ("figure", $1);
2194
2195                 scm_gc_unprotect_object ($$);
2196         }
2197         | bass_figure bass_mod {
2198                 Music *m = unsmob_music ($1);
2199                 if ($2) {
2200                         SCM salter = m->get_property ("alteration");
2201                         int alter = scm_is_number (salter) ? scm_to_int (salter) : 0;
2202                         m->set_property ("alteration",
2203                                 scm_int2num (alter + $2));
2204                 } else {
2205                         m->set_property ("alteration", scm_int2num (0));
2206                 }
2207         }
2208         ;
2209
2210 br_bass_figure:
2211         '[' bass_figure {
2212                 $$ = $2;
2213                 unsmob_music ($$)->set_property ("bracket-start", SCM_BOOL_T);
2214         }
2215         | bass_figure   {
2216                 $$ = $1;
2217         }
2218         | br_bass_figure ']' {
2219                 $$ = $1;
2220                 unsmob_music ($1)->set_property ("bracket-stop", SCM_BOOL_T);
2221         }
2222         ;
2223
2224 figure_list:
2225         /**/            {
2226                 $$ = SCM_EOL;
2227         }
2228         | figure_list br_bass_figure {
2229                 $$ = scm_cons ($2, $1);
2230         }
2231         ;
2232
2233 figure_spec:
2234         FIGURE_OPEN figure_list FIGURE_CLOSE {
2235                 Music *m = MY_MAKE_MUSIC ("EventChord");
2236                 $2 = scm_reverse_x ($2, SCM_EOL);
2237                 m->set_property ("elements", $2);
2238                 $$ = m->self_scm ();
2239         }
2240         ;
2241
2242
2243 optional_rest:
2244         /**/   { $$ = 0; }
2245         | REST { $$ = 1; }
2246         ;
2247
2248 simple_element:
2249         pitch exclamations questions octave_check optional_notemode_duration optional_rest {
2250                 if (!THIS->lexer_->is_note_state ())
2251                         THIS->parser_error (@1, _ ("have to be in Note mode for notes"));
2252
2253                 Music *n = 0;
2254                 if ($6)
2255                         n = MY_MAKE_MUSIC ("RestEvent");
2256                 else
2257                         n = MY_MAKE_MUSIC ("NoteEvent");
2258
2259                 n->set_property ("pitch", $1);
2260                 n->set_property ("duration", $5);
2261
2262                 if (scm_is_number ($4))
2263                 {
2264                         int q = scm_to_int ($4);
2265                         n->set_property ("absolute-octave", scm_int2num (q-1));
2266                 }
2267
2268                 if ($3 % 2)
2269                         n->set_property ("cautionary", SCM_BOOL_T);
2270                 if ($2 % 2 || $3 % 2)
2271                         n->set_property ("force-accidental", SCM_BOOL_T);
2272
2273                 Music *v = MY_MAKE_MUSIC ("EventChord");
2274                 v->set_property ("elements", scm_list_1 (n->self_scm ()));
2275                 scm_gc_unprotect_object (n->self_scm ());
2276
2277                 v->set_spot (@$);
2278                 n->set_spot (@$);
2279                 $$ = v;
2280         }
2281         | DRUM_PITCH optional_notemode_duration {
2282                 Music *n = MY_MAKE_MUSIC ("NoteEvent");
2283                 n->set_property ("duration", $2);
2284                 n->set_property ("drum-type", $1);
2285
2286                 Music *v = MY_MAKE_MUSIC ("EventChord");
2287                 v->set_property ("elements", scm_list_1 (n->self_scm ()));
2288                 scm_gc_unprotect_object (n->self_scm ());
2289                 v->set_spot (@$);
2290                 n->set_spot (@$);
2291                 $$ = v;
2292
2293         }
2294         | figure_spec optional_notemode_duration {
2295                 Music *m = unsmob_music ($1);
2296                 m->set_spot (@$);
2297                 for (SCM s = m->get_property ("elements"); scm_is_pair (s); s = scm_cdr (s))
2298                 {
2299                         unsmob_music (scm_car (s))->set_property ("duration", $2);
2300                 }
2301                 $$ = m;
2302         }
2303         | RESTNAME optional_notemode_duration           {
2304                 Music *ev = 0;
2305                 if (ly_scm2string ($1) == "s") {
2306                         /* Space */
2307                         ev = MY_MAKE_MUSIC ("SkipEvent");
2308                   }
2309                 else {
2310                         ev = MY_MAKE_MUSIC ("RestEvent");
2311
2312                     }
2313                 ev->set_property ("duration", $2);
2314                 ev->set_spot (@$);
2315                 Music *velt = MY_MAKE_MUSIC ("EventChord");
2316                 velt->set_property ("elements", scm_list_1 (ev->self_scm ()));
2317                 velt->set_spot (@$);
2318
2319                 scm_gc_unprotect_object (ev->self_scm ());
2320
2321                 $$ = velt;
2322         }
2323         | MULTI_MEASURE_REST optional_notemode_duration         {
2324                 SCM proc = ly_lily_module_constant ("make-multi-measure-rest");
2325                 SCM mus = scm_call_2 (proc, $2, make_input (@$));
2326                 scm_gc_protect_object (mus);
2327                 $$ = unsmob_music (mus);
2328         }
2329
2330         | lyric_element optional_notemode_duration      {
2331                 if (!THIS->lexer_->is_lyric_state ())
2332                         THIS->parser_error (@1, _ ("have to be in Lyric mode for lyrics"));
2333
2334                 Music *lreq = MY_MAKE_MUSIC ("LyricEvent");
2335                 lreq->set_property ("text", $1);
2336                 lreq->set_property ("duration",$2);
2337                 lreq->set_spot (@$);
2338                 Music *velt = MY_MAKE_MUSIC ("EventChord");
2339                 velt->set_property ("elements", scm_list_1 (lreq->self_scm ()));
2340
2341                 $$= velt;
2342         }
2343         | new_chord {
2344                 if (!THIS->lexer_->is_chord_state ())
2345                         THIS->parser_error (@1, _ ("have to be in Chord mode for chords"));
2346                 $$ = unsmob_music ($1);
2347         }
2348         ;
2349
2350 lyric_element:
2351         lyric_markup {
2352                 $$ = $1;
2353         }
2354         | LYRICS_STRING {
2355                 $$ = make_simple_markup ($1);
2356         }
2357         ;
2358
2359 new_chord:
2360         steno_tonic_pitch optional_notemode_duration   {
2361                 $$ = make_chord ($1, $2, SCM_EOL);
2362         }
2363         | steno_tonic_pitch optional_notemode_duration chord_separator chord_items {
2364                 SCM its = scm_reverse_x ($4, SCM_EOL);
2365                 $$ = make_chord ($1, $2, scm_cons ($3, its));
2366         }
2367         ;
2368
2369 chord_items:
2370         /**/ {
2371                 $$ = SCM_EOL;
2372         }
2373         | chord_items chord_item {
2374                 $$ = scm_cons ($2, $$);
2375         }
2376         ;
2377
2378 chord_separator:
2379         CHORD_COLON {
2380                 $$ = ly_symbol2scm ("chord-colon");
2381         }
2382         | CHORD_CARET {
2383                 $$ = ly_symbol2scm ("chord-caret");
2384         }
2385         | CHORD_SLASH steno_tonic_pitch {
2386                 $$ = scm_list_2 (ly_symbol2scm ("chord-slash"), $2);
2387         }
2388         | CHORD_BASS steno_tonic_pitch {
2389                 $$ = scm_list_2 (ly_symbol2scm ("chord-bass"), $2);
2390         }
2391         ;
2392
2393 chord_item:
2394         chord_separator {
2395                 $$ = $1;
2396         }
2397         | step_numbers {
2398                 $$ = scm_reverse_x ($1, SCM_EOL);
2399         }
2400         | CHORD_MODIFIER  {
2401                 $$ = $1;
2402         }
2403         ;
2404
2405 step_numbers:
2406         step_number { $$ = scm_cons ($1, SCM_EOL); }
2407         | step_numbers '.' step_number {
2408                 $$ = scm_cons ($3, $$);
2409         }
2410         ;
2411
2412 step_number:
2413         bare_unsigned {
2414                 $$ = make_chord_step ($1, 0);
2415         }
2416         | bare_unsigned '+' {
2417                 $$ = make_chord_step ($1, SHARP);
2418         }
2419         | bare_unsigned CHORD_MINUS {
2420                 $$ = make_chord_step ($1, FLAT);
2421         }
2422         ;
2423
2424 /*
2425         UTILITIES
2426
2427 TODO: should deprecate in favor of Scheme?
2428
2429  */
2430 number_expression:
2431         number_expression '+' number_term {
2432                 $$ = scm_sum ($1, $3);
2433         }
2434         | number_expression '-' number_term {
2435                 $$ = scm_difference ($1, $3);
2436         }
2437         | number_term
2438         ;
2439
2440 number_term:
2441         number_factor {
2442                 $$ = $1;
2443         }
2444         | number_factor '*' number_factor {
2445                 $$ = scm_product ($1, $3);
2446         }
2447         | number_factor '/' number_factor {
2448                 $$ = scm_divide ($1, $3);
2449         }
2450         ;
2451
2452 number_factor:
2453         '-'  number_factor { /* %prec UNARY_MINUS */
2454                 $$ = scm_difference ($2, SCM_UNDEFINED);
2455         }
2456         | bare_number
2457         ;
2458
2459
2460 bare_number:
2461         UNSIGNED        {
2462                 $$ = scm_int2num ($1);
2463         }
2464         | REAL          {
2465                 $$ = $1;
2466         }
2467         | NUMBER_IDENTIFIER             {
2468                 $$ = $1;
2469         }
2470         | REAL NUMBER_IDENTIFIER        {
2471                 $$ = scm_make_real (scm_to_double ($1) *scm_to_double ($2));
2472         }
2473         | UNSIGNED NUMBER_IDENTIFIER    {
2474                 $$ = scm_make_real ($1 *scm_to_double ($2));
2475         }
2476         ;
2477
2478
2479 bare_unsigned:
2480         UNSIGNED {
2481                         $$ = $1;
2482         }
2483         | DIGIT {
2484                 $$ = $1;
2485         }
2486         ;
2487
2488 bare_int:
2489         bare_number {
2490                 if (scm_integer_p ($1) == SCM_BOOL_T)
2491                 {
2492                         int k = scm_to_int ($1);
2493                         $$ = k;
2494                 } else
2495                 {
2496                         THIS->parser_error (@1, _ ("need integer number arg"));
2497                         $$ = 0;
2498                 }
2499         }
2500         | '-' bare_int {
2501                 $$ = -$2;
2502         }
2503         ;
2504
2505 exclamations:
2506                 { $$ = 0; }
2507         | exclamations '!'      { $$ ++; }
2508         ;
2509
2510 questions:
2511                 { $$ = 0; }
2512         | questions '?' { $$ ++; }
2513         ;
2514
2515 /*
2516 This should be done more dynamically if possible.
2517 */
2518
2519 lyric_markup:
2520         LYRIC_MARKUP_IDENTIFIER {
2521                 $$ = $1;
2522         }
2523         | LYRIC_MARKUP
2524                 { THIS->lexer_->push_markup_state (); }
2525         markup_top {
2526                 $$ = $3;
2527                 THIS->lexer_->pop_state ();
2528         }
2529         ;
2530
2531 full_markup:
2532         MARKUP_IDENTIFIER {
2533                 $$ = $1;
2534         }
2535         | MARKUP
2536                 { THIS->lexer_->push_markup_state (); }
2537         markup_top {
2538                 $$ = $3;
2539                 THIS->lexer_->pop_state ();
2540         }
2541         ;
2542
2543 markup_top:
2544         markup_list {
2545                 $$ = scm_list_2 (ly_lily_module_constant ("line-markup"),  $1);
2546         }
2547         | markup_head_1_list simple_markup      {
2548                 $$ = scm_car (scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, scm_list_1 ($2)));
2549         }
2550         | simple_markup {
2551                 $$ = $1;
2552         }
2553         ;
2554
2555 markup_list:
2556         markup_composed_list {
2557                 $$ = $1;
2558         }
2559         | markup_braced_list {
2560                 $$ = $1;
2561         }
2562         ;
2563
2564 markup_composed_list:
2565         markup_head_1_list markup_braced_list {
2566                 $$ = scm_call_2 (ly_lily_module_constant ("map-markup-command-list"), $1, $2);
2567
2568         }
2569         ;
2570
2571 markup_braced_list:
2572         '{' markup_braced_list_body '}' {
2573                 $$ = scm_reverse_x ($2, SCM_EOL);
2574         }
2575         ;
2576
2577 markup_braced_list_body:
2578         /* empty */     {  $$ = SCM_EOL; }
2579         | markup_braced_list_body markup {
2580                 $$ = scm_cons ($2, $1);
2581         }
2582         | markup_braced_list_body markup_list {
2583                 $$ = scm_append_x (scm_list_2 (scm_reverse_x ($2, SCM_EOL), $1));
2584         }
2585         ;
2586
2587 markup_head_1_item:
2588         MARKUP_HEAD_MARKUP0     {
2589                 $$ = scm_list_1 ($1);
2590         }
2591         | MARKUP_HEAD_SCM0_MARKUP1 embedded_scm {
2592                 $$ = scm_list_2 ($1, $2);
2593         }
2594         | MARKUP_HEAD_SCM0_SCM1_MARKUP2 embedded_scm embedded_scm       {
2595                 $$ = scm_list_3 ($1, $2, $3);
2596         }
2597         ;
2598
2599 markup_head_1_list:
2600         markup_head_1_item      {
2601                 $$ = scm_list_1 ($1);
2602         }
2603         | markup_head_1_list markup_head_1_item {
2604                 $$ = scm_cons ($2, $1);
2605         }
2606         ;
2607
2608 simple_markup:
2609         STRING {
2610                 $$ = make_simple_markup ($1);
2611         }
2612         | MARKUP_IDENTIFIER {
2613                 $$ = $1;
2614         }
2615         | LYRIC_MARKUP_IDENTIFIER {
2616                 $$ = $1;
2617         }
2618         | STRING_IDENTIFIER {
2619                 $$ = $1;
2620         }
2621         | SCORE {
2622                 SCM nn = THIS->lexer_->lookup_identifier ("pitchnames");
2623                 THIS->lexer_->push_note_state (alist_to_hashq (nn));
2624         } '{' score_body '}' {
2625                 Score * sc = $4;
2626                 $$ = scm_list_2 (ly_lily_module_constant ("score-markup"), sc->self_scm ());
2627                 scm_gc_unprotect_object (sc->self_scm ());
2628                 THIS->lexer_->pop_state ();
2629         }
2630         | MARKUP_HEAD_SCM0 embedded_scm {
2631                 $$ = scm_list_2 ($1, $2);
2632         }
2633         | MARKUP_HEAD_SCM0_SCM1_SCM2 embedded_scm embedded_scm embedded_scm {
2634                 $$ = scm_list_4 ($1, $2, $3, $4);
2635         }
2636         | MARKUP_HEAD_SCM0_SCM1 embedded_scm embedded_scm {
2637                 $$ = scm_list_3 ($1, $2, $3);
2638         }
2639         | MARKUP_HEAD_EMPTY {
2640                 $$ = scm_list_1 ($1);
2641         }
2642         | MARKUP_HEAD_LIST0 markup_list {
2643                 $$ = scm_list_2 ($1,$2);
2644         }
2645         | MARKUP_HEAD_MARKUP0_MARKUP1 markup markup {
2646                 $$ = scm_list_3 ($1, $2, $3);
2647         }
2648         ;
2649
2650 markup:
2651         markup_head_1_list simple_markup        {
2652                 SCM mapper = ly_lily_module_constant ("map-markup-command-list");
2653                 $$ = scm_car (scm_call_2 (mapper, $1, scm_list_1 ($2)));
2654         }
2655         | simple_markup {
2656                 $$ = $1;
2657         }
2658         ;
2659
2660 %%
2661
2662 void
2663 Lily_parser::set_yydebug (bool )
2664 {
2665 #if 0
2666         yydebug = 1;
2667 #endif
2668 }
2669
2670 void
2671 Lily_parser::do_yyparse ()
2672 {
2673         yyparse ((void*)this);
2674 }
2675
2676
2677 /* FIXME: Should make this optional?  It will also complain at
2678
2679         [s4]
2680
2681 which is entirely legitimate.
2682
2683 Or we can scrap it.  Barchecks should detect wrong durations, and
2684 skipTypesetting speeds it up a lot.  */
2685
2686 void
2687 Lily_parser::beam_check (SCM dur)
2688 {
2689   Duration *d = unsmob_duration (dur);
2690   if (unsmob_music (last_beam_start_) && d->duration_log () <= 2)
2691     {
2692       Music *m = unsmob_music (last_beam_start_);
2693       m->origin ()->warning (_f ("suspect duration in beam: %s",
2694       d->to_string ()));
2695     }
2696   last_beam_start_ = SCM_EOL;
2697 }
2698
2699
2700
2701
2702 /*
2703
2704 It is a little strange to have this function in this file, but
2705 otherwise, we have to import music classes into the lexer.
2706
2707 */
2708 int
2709 Lily_lexer::try_special_identifiers (SCM *destination, SCM sid)
2710 {
2711         if (scm_is_string (sid)) {
2712                 *destination = sid;
2713                 return STRING_IDENTIFIER;
2714         } else if (scm_is_number (sid)) {
2715                 *destination = sid;
2716                 return NUMBER_IDENTIFIER;
2717         } else if (unsmob_context_def (sid)) {
2718                 *destination = unsmob_context_def (sid)->clone_scm ();
2719                 return CONTEXT_DEF_IDENTIFIER;
2720         } else if (unsmob_score (sid)) {
2721                 Score *score = new Score (*unsmob_score (sid));
2722                 *destination = score->self_scm ();
2723                 return SCORE_IDENTIFIER;
2724         } else if (Music *mus = unsmob_music (sid)) {
2725                 mus = mus->clone ();
2726                 *destination = mus->self_scm ();
2727                 unsmob_music (*destination)->
2728                         set_property ("origin", make_input (last_input_));
2729                 return dynamic_cast<Event*> (mus)
2730                         ? EVENT_IDENTIFIER : MUSIC_IDENTIFIER;
2731         } else if (unsmob_duration (sid)) {
2732                 *destination = unsmob_duration (sid)->smobbed_copy ();
2733                 return DURATION_IDENTIFIER;
2734         } else if (unsmob_output_def (sid)) {
2735                 Output_def *p = unsmob_output_def (sid);
2736                 p = p->clone ();
2737
2738                 *destination = p->self_scm ();
2739                 return OUTPUT_DEF_IDENTIFIER;
2740         } else if (Text_interface::markup_p (sid)) {
2741                 *destination = sid;
2742                 if (is_lyric_state ())
2743                         return LYRIC_MARKUP_IDENTIFIER;
2744                 return MARKUP_IDENTIFIER;
2745         }
2746
2747         return -1;
2748 }
2749
2750 Music *
2751 property_op_to_music (SCM op)
2752 {
2753         Music *m = 0;
2754         SCM tag = scm_car (op);
2755         SCM symbol = scm_cadr (op);
2756         SCM args = scm_cddr (op);
2757         SCM grob_val = SCM_UNDEFINED;
2758         SCM grob_sym = SCM_UNDEFINED;
2759         SCM val = SCM_UNDEFINED;
2760
2761         if (tag == ly_symbol2scm ("assign"))
2762                 {
2763                 m = MY_MAKE_MUSIC ("PropertySet");
2764                 val = scm_car (args);
2765                 }
2766         else if (tag == ly_symbol2scm ("unset"))
2767                 m = MY_MAKE_MUSIC ("PropertyUnset");
2768         else if (tag == ly_symbol2scm ("poppush")
2769                  || tag == ly_symbol2scm ("push"))
2770                 {
2771                 m = MY_MAKE_MUSIC ("OverrideProperty");
2772                 grob_sym = scm_car (args);
2773                 grob_val = scm_cadr (args);
2774                 }
2775         else if (tag == ly_symbol2scm ("pop")) {
2776                 m = MY_MAKE_MUSIC ("RevertProperty");
2777                 grob_sym = scm_car (args);
2778                 }
2779
2780         m->set_property ("symbol", symbol);
2781
2782         if (val != SCM_UNDEFINED)
2783                 m->set_property ("value", val);
2784         if (grob_val != SCM_UNDEFINED)
2785                 m->set_property ("grob-value", grob_val);
2786
2787         if (grob_sym != SCM_UNDEFINED)
2788                 {
2789                 bool itc = do_internal_type_checking_global;
2790                 /* UGH.
2791                 */
2792                 bool autobeam = ly_c_equal_p (symbol, ly_symbol2scm ("autoBeamSettings"));
2793                 if (autobeam)
2794                         do_internal_type_checking_global = false;
2795                 m->set_property ("grob-property", grob_sym);
2796                 if (autobeam)
2797                         do_internal_type_checking_global = itc;
2798                 }
2799
2800         if (tag == ly_symbol2scm ("poppush"))
2801                 m->set_property ("pop-first", SCM_BOOL_T);
2802
2803
2804         return m;
2805 }
2806
2807 Music*
2808 context_spec_music (SCM type, SCM id, Music *m, SCM ops)
2809 {
2810         Music *csm = MY_MAKE_MUSIC ("ContextSpeccedMusic");
2811
2812         csm->set_property ("element", m->self_scm ());
2813         scm_gc_unprotect_object (m->self_scm ());
2814
2815         csm->set_property ("context-type",
2816                 scm_is_symbol (type) ? type : scm_string_to_symbol (type));
2817         csm->set_property ("property-operations", ops);
2818
2819         if (scm_is_string (id))
2820                 csm->set_property ("context-id", id);
2821         return csm;
2822 }
2823
2824 SCM
2825 get_next_unique_context_id ()
2826 {
2827         return scm_makfrom0str ("$uniqueContextId");
2828 }
2829
2830
2831 SCM
2832 get_next_unique_lyrics_context_id ()
2833 {
2834         static int new_context_count;
2835         char s[128];
2836         snprintf (s, 1024, "uniqueContext%d", new_context_count++);
2837         return scm_makfrom0str (s);
2838 }