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--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   9            Jan Nieuwenhuizen <janneke@gnu.org>
  10 */
  11
  12 /*
  13   Two shift/reduce problems:
  14     -
  15     -
  16  */
  17
  18 /*
  19
  20 the rules for who is protecting what are very shady. TODO: uniformise
  21 this.
  22
  23
  24 */
  25
  26 #include <ctype.h>
  27 #include <iostream.h>
  28
  29 #include "translator-def.hh"
  30 #include "lily-guile.hh"
  31 #include "change-iterator.hh"
  32 #include "misc.hh"
  33 #include "my-lily-lexer.hh"
  34 #include "paper-def.hh"
  35 #include "midi-def.hh"
  36 #include "main.hh"
  37 #include "file-path.hh"
  38 #include "debug.hh"
  39 #include "dimensions.hh"
  40 #include "command-request.hh"
  41 #include "musical-request.hh"
  42 #include "my-lily-parser.hh"
  43 #include "context-specced-music.hh"
  44 #include "score.hh"
  45 #include "music-list.hh"
  46 #include "output-property-music-iterator.hh"
  47 #include "property-iterator.hh"
  48 #include "file-results.hh"
  49 #include "input.hh"
  50 #include "scope.hh"
  51 #include "relative-music.hh"
  52 #include "lyric-combine-music.hh"
  53 #include "transposed-music.hh"
  54 #include "time-scaled-music.hh"
  55 #include "repeated-music.hh"
  56 #include "untransposable-music.hh"
  57 #include "lilypond-input-version.hh"
  58 #include "grace-music.hh"
  59 #include "part-combine-music.hh"
  60 #include "scm-hash.hh"
  61 #include "auto-change-iterator.hh"
  62 #include "un-relativable-music.hh"
  63 #include "chord.hh"
  64
  65 bool
  66 regular_identifier_b (SCM id)
  67 {
  68   String str = ly_scm2string (id);
  69   char const *s = str.ch_C() ;
  70
  71   bool v = true;
  72   while (*s && v)
  73    {
  74         v = v && isalpha (*s);
  75         s++;
  76    }
  77   return v;
  78 }
  79
  80
  81 Music*
  82 set_property_music (SCM sym, SCM value)
  83 {
  84         Music * p = new Music (SCM_EOL);
  85         p->set_mus_property ("symbol", sym);
  86         p->set_mus_property ("iterator-ctor",
  87         Property_iterator::constructor_cxx_function);
  88
  89         p->set_mus_property ("value", value);
  90         return p;
  91 }
  92
  93 bool
  94 is_duration_b (int t)
  95 {
  96   return t && t == 1 << intlog2 (t);
  97 }
  98
  99 void
 100 set_music_properties (Music *p, SCM a)
 101 {
 102   for (SCM k = a; gh_pair_p (k); k = ly_cdr (k))
 103         {
 104         p->internal_set_mus_property (ly_caar (k), ly_cdar (k));
 105         }
 106 }
 107
 108
 109
 110
 111
 112
 113
 114 // needed for bison.simple's malloc () and free ()
 115
 116 #include <malloc.h>
 117 #include <stdlib.h>
 118
 119
 120 #ifndef NDEBUG
 121 #define YYDEBUG 1
 122 #endif
 123
 124 #define YYERROR_VERBOSE 1
 125
 126 #define YYPARSE_PARAM my_lily_parser_l
 127 #define YYLEX_PARAM my_lily_parser_l
 128 #define THIS\
 129         ((My_lily_parser *) my_lily_parser_l)
 130
 131 #define yyerror THIS->parser_error
 132 #define ARRAY_SIZE(a,s)   if (a.size () != s) THIS->parser_error (_f ("Expecting %d arguments", s))
 133
 134 %}
 135
 136 /* We use SCMs to do strings, because it saves us the trouble of
 137 deleting them.  Let's hope that a stack overflow doesnt trigger a move
 138 of the parse stack onto the heap. */
 139
 140
 141 %union {
 142
 143     Link_array<Request> *reqvec;
 144
 145     String *string; // needed by the lexer as temporary scratch area.
 146     Music *music;
 147     Score *score;
 148     Scope *scope;
 149     Scheme_hash_table *scmhash;
 150     Music_output_def * outputdef;
 151
 152     Request * request;
 153
 154     SCM scm;
 155
 156     Tempo_req *tempo;
 157     int i;
 158 }
 159 %{
 160
 161 int
 162 yylex (YYSTYPE *s,  void * v_l)
 163 {
 164         My_lily_parser   *pars_l = (My_lily_parser*) v_l;
 165         My_lily_lexer * lex_l = pars_l->lexer_p_;
 166
 167         lex_l->lexval_l = (void*) s;
 168         return lex_l->yylex ();
 169 }
 170
 171
 172 %}
 173
 174 %pure_parser
 175
 176 /* tokens which are not keywords */
 177 %token AUTOCHANGE
 178 %token ALIAS
 179 %token APPLY
 180 %token ARPEGGIO
 181 %token DYNAMICSCRIPT
 182 %token ACCEPTS
 183 %token ALTERNATIVE
 184 %token BAR
 185 %token BREATHE
 186 %token CHORDMODIFIERS
 187 %token CHORDS
 188 %token CHAR_T
 189 %token CLEF
 190 %token CM_T
 191 %token CONSISTS
 192 %token DURATION
 193 %token SEQUENTIAL
 194 %token GROBDESCRIPTIONS
 195 %token SIMULTANEOUS
 196 %token CONSISTSEND
 197 %token DENIES
 198 %token DURATION
 199 %token EXTENDER
 200 %token FIGURES FIGURE_OPEN FIGURE_CLOSE
 201 %token FIGURE_BRACKET_CLOSE FIGURE_BRACKET_OPEN
 202 %token GLISSANDO
 203 %token GRACE
 204 %token HEADER
 205 %token HYPHEN
 206 %token IN_T
 207 %token INVALID
 208 %token KEY
 209 %token LYRICS
 210 %token MARK
 211 %token MULTI_MEASURE_REST
 212 %token MIDI
 213 %token MM_T
 214 %token PITCH
 215 %token DEFAULT
 216 %token NAME
 217 %token PITCHNAMES
 218 %token NOTES
 219 %token PAPER
 220 %token PARTIAL
 221 %token PENALTY
 222 %token PROPERTY
 223 %token OVERRIDE SET REVERT
 224 %token PT_T
 225 %token RELATIVE
 226 %token REMOVE
 227 %token REPEAT
 228 %token ADDLYRICS
 229 %token PARTCOMBINE
 230 %token SCM_T
 231 %token SCORE
 232 %token SCRIPT
 233 %token SKIP
 234 %token SPANREQUEST
 235 %token STYLESHEET
 236 %token COMMANDSPANREQUEST
 237 %token TEMPO
 238 %token OUTPUTPROPERTY
 239 %token TIME_T
 240 %token TIMES
 241 %token TRANSLATOR
 242 %token TRANSPOSE
 243 %token TYPE
 244 %token UNSET
 245 %token CONTEXT
 246 %token REST
 247
 248 /* escaped */
 249 %token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER E_OPEN E_CLOSE E_TILDE
 250 %token E_BACKSLASH
 251 %token CHORD_BASS CHORD_COLON CHORD_MINUS CHORD_CARET
 252 %token FIGURE_SPACE
 253
 254
 255 %type <i>       exclamations questions dots optional_rest
 256 %type <i>       bass_number bass_mod
 257 %type <scm>     br_bass_figure bass_figure figure_list figure_spec
 258 %token <i>      DIGIT
 259 %token <scm>    NOTENAME_PITCH
 260 %token <scm>    TONICNAME_PITCH
 261 %token <scm>    CHORDMODIFIER_PITCH
 262 %token <scm>    DURATION_IDENTIFIER
 263 %token <scm>    FRACTION
 264 %token <id>     IDENTIFIER
 265
 266
 267 %token <scm>    SCORE_IDENTIFIER
 268 %token <scm>    MUSIC_OUTPUT_DEF_IDENTIFIER
 269
 270 %token <scm>    NUMBER_IDENTIFIER
 271 %token <scm>    REQUEST_IDENTIFIER
 272 %token <scm>    MUSIC_IDENTIFIER TRANSLATOR_IDENTIFIER
 273 %token <scm>    STRING_IDENTIFIER SCM_IDENTIFIER
 274 %token <scm>    RESTNAME
 275 %token <scm>    STRING
 276 %token <scm>    SCM_T
 277 %token <i>      UNSIGNED
 278 %token <scm>   REAL
 279
 280 %type <outputdef> output_def
 281 %type <scmhash>         lilypond_header lilypond_header_body
 282 %type <request> open_request_parens close_request_parens open_request close_request
 283 %type <request> request_with_dir request_that_take_dir verbose_request
 284 %type <i>       sub_quotes sup_quotes
 285 %type <music>   simple_element  request_chord command_element Simple_music  Composite_music
 286 %type <music>   Repeated_music
 287 %type <scm>     Alternative_music
 288 %type <i>       tremolo_type
 289 %type <i>       bare_int  bare_unsigned
 290 %type <i>       script_dir
 291
 292 %type <scm>     identifier_init
 293
 294 %type <scm> steno_duration optional_notemode_duration multiplied_duration
 295 %type <scm>  verbose_duration
 296
 297 %type <reqvec>  pre_requests post_requests
 298 %type <request> gen_text_def
 299 %type <scm>   steno_pitch pitch absolute_pitch
 300 %type <scm>   explicit_pitch steno_tonic_pitch
 301
 302 %type <scm>     chord_additions chord_subtractions chord_notes chord_step
 303 %type <music>   chord
 304 %type <scm>     chord_note chord_inversion chord_bass
 305 %type <scm>     duration_length fraction
 306
 307 %type <scm>  embedded_scm scalar
 308 %type <music>   Music Sequential_music Simultaneous_music
 309 %type <music>   relative_music re_rhythmed_music part_combined_music
 310 %type <music>   property_def translator_change
 311 %type <scm> Music_list
 312 %type <outputdef>  music_output_def_body
 313 %type <request> shorthand_command_req
 314 %type <request> post_request
 315 %type <music> command_req verbose_command_req
 316 %type <request> extender_req
 317 %type <request> hyphen_req
 318 %type <scm>     string bare_number number_expression number_term number_factor
 319
 320 %type <score>   score_block score_body
 321
 322 %type <scm>     translator_spec_block translator_spec_body
 323 %type <tempo>   tempo_request
 324 %type <scm> notenames_body notenames_block chordmodifiers_block
 325 %type <scm>     script_abbreviation
 326
 327
 328
 329 %left '-' '+'
 330
 331 /* We don't assign precedence to / and *, because we might need varied
 332 prec levels in different prods */
 333
 334 %left UNARY_MINUS
 335
 336 %%
 337
 338 lilypond:       /* empty */
 339         | lilypond toplevel_expression {}
 340         | lilypond assignment  { }
 341         | lilypond error {
 342                 THIS->error_level_i_  = 1;
 343         }
 344         | lilypond INVALID      {
 345                 THIS->error_level_i_  = 1;
 346         }
 347         ;
 348
 349 toplevel_expression:
 350         notenames_block                 {
 351                 THIS->lexer_p_->pitchname_tab_ =  $1;
 352         }
 353         | chordmodifiers_block                  {
 354                 THIS->lexer_p_->chordmodifier_tab_  = $1;
 355         }
 356         | lilypond_header {
 357                 if (global_header_p)
 358                         scm_gc_unprotect_object (global_header_p->self_scm ());
 359                 global_header_p = $1;
 360         }
 361         | score_block {
 362                 score_global_array.push ($1);
 363         }
 364         | output_def {
 365                 if (dynamic_cast<Paper_def*> ($1))
 366                         THIS->lexer_p_->set_identifier ("$defaultpaper", $1->self_scm ());
 367                 else if (dynamic_cast<Midi_def*> ($1))
 368                         THIS->lexer_p_->set_identifier ("$defaultmidi", $1->self_scm ());
 369         }
 370         | embedded_scm {
 371                 // junk value
 372         }
 373         ;
 374
 375 embedded_scm:
 376         SCM_T
 377         | SCM_IDENTIFIER
 378         ;
 379
 380
 381 chordmodifiers_block:
 382         CHORDMODIFIERS notenames_body   {  $$ = $2; }
 383         ;
 384
 385 notenames_block:
 386         PITCHNAMES notenames_body   {  $$ = $2; }
 387         ;
 388
 389 notenames_body:
 390         embedded_scm    {
 391           int i = scm_ilength ($1);
 392
 393           SCM tab = scm_make_vector (gh_int2scm (i), SCM_EOL);
 394           for (SCM s = $1; gh_pair_p (s); s = ly_cdr (s)) {
 395                 SCM pt = ly_cdar (s);
 396                 if (!unsmob_pitch (pt))
 397                         THIS->parser_error ("Need pitch object.");
 398                 else
 399                         scm_hashq_set_x (tab, ly_caar (s), pt);
 400           }
 401
 402           $$ = tab;
 403         }
 404         ;
 405
 406 lilypond_header_body:
 407         {
 408                 $$ = new Scheme_hash_table;
 409
 410                 Scope *sc = new Scope ($$);
 411                 THIS->lexer_p_-> scope_l_arr_.push (sc);
 412         }
 413         | lilypond_header_body assignment  {
 414
 415         }
 416         ;
 417
 418 lilypond_header:
 419         HEADER '{' lilypond_header_body '}'     {
 420                 $$ = $3;
 421                 delete THIS->lexer_p_-> scope_l_arr_.pop ();
 422         }
 423         ;
 424
 425
 426 /*
 427         DECLARATIONS
 428 */
 429 assignment:
 430         STRING {
 431                 THIS->push_spot ();
 432         }
 433         /* cont */ '=' identifier_init  {
 434
 435         /*
 436                 Should find generic way of associating input with objects.
 437         */
 438                 Input ip = THIS->pop_spot ();
 439
 440                 if (! regular_identifier_b ($1))
 441                 {
 442                         ip.warning (_ ("Identifier should have  alphabetic characters only"));
 443                 }
 444
 445                 THIS->lexer_p_->set_identifier (ly_scm2string ($1), $4);
 446
 447 /*
 448  TODO: devise standard for protection in parser.
 449
 450   The parser stack lives on the C-stack, which means that
 451 all objects can be unprotected as soon as they're here.
 452
 453 */
 454         }
 455         ;
 456
 457
 458
 459 identifier_init:
 460         score_block {
 461                 $$ = $1->self_scm ();
 462                 scm_gc_unprotect_object ($$);
 463         }
 464         | output_def {
 465                 $$ = $1->self_scm ();
 466                 scm_gc_unprotect_object ($$);
 467         }
 468         | translator_spec_block {
 469                 $$ = $1;
 470         }
 471         | Music  {
 472                 $$ = $1->self_scm ();
 473                 scm_gc_unprotect_object ($$);
 474         }
 475         | post_request {
 476                 $$ = $1->self_scm ();
 477                 scm_gc_unprotect_object ($$);
 478         }
 479         | verbose_duration {
 480                 $$ = $1;
 481         }
 482         | number_expression {
 483                 $$ = $1;
 484         }
 485         | string {
 486                 $$ = $1;
 487         }
 488         | embedded_scm  {
 489                 $$ = $1;
 490         }
 491         ;
 492
 493 translator_spec_block:
 494         TRANSLATOR '{' translator_spec_body '}'
 495                 {
 496                 $$ = $3;
 497         }
 498         ;
 499
 500 translator_spec_body:
 501         TRANSLATOR_IDENTIFIER   {
 502                 $$ = unsmob_translator_def ($1)->clone_scm ();
 503                 unsmob_translator_def ($$)-> set_spot (THIS->here_input ());
 504         }
 505         | TYPE STRING   {
 506                 $$ = Translator_def::make_scm ();
 507                 Translator_def*td =  unsmob_translator_def ($$);
 508                 td->translator_group_type_ = $2;
 509                 td->set_spot (THIS->here_input ());
 510         }
 511         | translator_spec_body STRING '=' embedded_scm                  {
 512                 unsmob_translator_def ($$)->add_property_assign ($2, $4);
 513         }
 514         | translator_spec_body STRING OVERRIDE embedded_scm '=' embedded_scm {
 515                 unsmob_translator_def ($$)
 516                         ->add_push_property (scm_string_to_symbol ($2), $4, $6);
 517         }
 518         | translator_spec_body STRING REVERT embedded_scm  {
 519           unsmob_translator_def ($$)->add_pop_property (
 520                 scm_string_to_symbol ($2), $4);
 521         }
 522         | translator_spec_body NAME STRING  {
 523                 unsmob_translator_def ($$)->type_name_ = $3;
 524         }
 525         | translator_spec_body CONSISTS STRING  {
 526                 unsmob_translator_def ($$)->add_element ($3);
 527         }
 528         | translator_spec_body ALIAS STRING  {
 529                 Translator_def*td = unsmob_translator_def ($$);
 530                 td->type_aliases_ = gh_cons ($3, td->type_aliases_);
 531         }
 532         | translator_spec_body GROBDESCRIPTIONS embedded_scm {
 533                 Translator_def*td = unsmob_translator_def($$);
 534                 // td->add_property_assign (ly_symbol2scm ("allGrobDescriptions"), $3);
 535                 for (SCM p = $3; gh_pair_p (p); p = ly_cdr (p))
 536                         td->add_property_assign (scm_symbol_to_string (ly_caar (p)), ly_cdar (p));
 537         }
 538         | translator_spec_body CONSISTSEND STRING  {
 539                 unsmob_translator_def ($$)->add_last_element ( $3);
 540         }
 541         | translator_spec_body ACCEPTS STRING  {
 542                 unsmob_translator_def ($$)->set_acceptor ($3,true);
 543         }
 544         | translator_spec_body DENIES STRING  {
 545                 unsmob_translator_def ($$)->set_acceptor ($3,false);
 546         }
 547         | translator_spec_body REMOVE STRING  {
 548                 unsmob_translator_def ($$)->remove_element ($3);
 549         }
 550         ;
 551
 552 /*
 553         SCORE
 554 */
 555 score_block:
 556         SCORE {
 557                 THIS->push_spot ();
 558         }
 559         /*cont*/ '{' score_body '}'     {
 560                 THIS->pop_spot ();
 561                 $$ = $4;
 562                 if (!$$->def_p_arr_.size ())
 563                 {
 564                   Music_output_def *id =
 565                         unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
 566                   $$->add_output (id ? id->clone () :  new Paper_def );
 567                 }
 568         }
 569         ;
 570
 571 score_body:
 572         Music   {
 573                 $$ = new Score;
 574
 575                 $$->set_spot (THIS->here_input ());
 576                 SCM m = $1->self_scm ();
 577                 scm_gc_unprotect_object (m);
 578                 $$->music_ = m;
 579         }
 580         | SCORE_IDENTIFIER {
 581                 $$ = new Score (*unsmob_score ($1));
 582                 $$->set_spot (THIS->here_input ());
 583         }
 584         | score_body lilypond_header    {
 585                 scm_gc_unprotect_object ($2->self_scm ());
 586                 $$->header_p_ = $2;
 587         }
 588         | score_body output_def {
 589                 $$->add_output ($2);
 590         }
 591         | score_body error {
 592
 593         }
 594         ;
 595
 596
 597 /*
 598         MIDI
 599 */
 600 output_def:
 601         music_output_def_body '}' {
 602                 $$ = $1;
 603                 THIS-> lexer_p_-> scope_l_arr_.pop ();
 604         }
 605         ;
 606
 607 music_output_def_body:
 608         MIDI '{'    {
 609            Music_output_def *id = unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultmidi"));
 610
 611
 612          Midi_def* p =0;
 613         if (id)
 614                 p = dynamic_cast<Midi_def*> (id->clone ());
 615         else
 616                 p = new Midi_def;
 617
 618          $$ = p;
 619          THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
 620         }
 621         | PAPER '{'     {
 622                 Music_output_def *id = unsmob_music_output_def (THIS->lexer_p_->lookup_identifier ("$defaultpaper"));
 623                   Paper_def *p = 0;
 624                 if (id)
 625                         p = dynamic_cast<Paper_def*> (id->clone ());
 626                 else
 627                         p = new Paper_def;
 628                 THIS-> lexer_p_-> scope_l_arr_.push (p->scope_p_);
 629                 $$ = p;
 630         }
 631         | PAPER '{' MUSIC_OUTPUT_DEF_IDENTIFIER         {
 632                 Music_output_def *p = unsmob_music_output_def ($3);
 633                 p = p->clone ();
 634                 THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
 635                 $$ = p;
 636         }
 637         | MIDI '{' MUSIC_OUTPUT_DEF_IDENTIFIER  {
 638                 Music_output_def *p = unsmob_music_output_def ($3);
 639                 p = p->clone ();
 640
 641                 THIS->lexer_p_->scope_l_arr_.push (p->scope_p_);
 642                 $$ = p;
 643         }
 644         | music_output_def_body assignment  {
 645
 646         }
 647         | music_output_def_body translator_spec_block   {
 648                 $$->assign_translator ($2);
 649         }
 650         | music_output_def_body STYLESHEET embedded_scm {
 651                 dynamic_cast<Paper_def*> ($$)-> style_sheet_ = $3;
 652         }
 653         | music_output_def_body tempo_request  {
 654                 /*
 655                         junk this ? there already is tempo stuff in
 656                         music.
 657                 */
 658                 int m = gh_scm2int ( $2->get_mus_property ("metronome-count"));
 659                 Duration *d = unsmob_duration ($2->get_mus_property ("duration"));
 660                 dynamic_cast<Midi_def*> ($$)->set_tempo (d->length_mom (), m);
 661         }
 662         | music_output_def_body error {
 663
 664         }
 665         ;
 666
 667 tempo_request:
 668         TEMPO steno_duration '=' bare_unsigned  {
 669                 $$ = new Tempo_req;
 670                 $$->set_mus_property ("duration", $2);
 671                 $$->set_mus_property ("metronome-count", gh_int2scm ( $4));
 672         }
 673         ;
 674
 675 /*
 676 The representation of a  list is the
 677
 678   (LIST . LAST-CONS)
 679
 680  to have  efficient append.
 681 */
 682 Music_list: /* empty */ {
 683                 $$ = gh_cons (SCM_EOL, SCM_EOL);
 684         }
 685         | Music_list Music {
 686                 SCM s = $$;
 687                 SCM c = gh_cons ($2->self_scm (), SCM_EOL);
 688                 scm_gc_unprotect_object ($2->self_scm ()); /* UGH */
 689                 if (gh_pair_p (ly_cdr (s)))
 690                         gh_set_cdr_x (ly_cdr (s), c); /* append */
 691                 else
 692                         gh_set_car_x (s, c); /* set first cons */
 693                 gh_set_cdr_x (s, c) ;  /* remember last cell */
 694         }
 695         | Music_list error {
 696         }
 697         ;
 698
 699
 700 Music:
 701         Simple_music
 702         | Composite_music
 703         ;
 704
 705 Alternative_music:
 706         /* empty */ {
 707                 $$ = SCM_EOL;
 708         }
 709         | ALTERNATIVE '{' Music_list '}' {
 710                 $$ = $3;
 711         }
 712         ;
 713
 714 Repeated_music:
 715         REPEAT string bare_unsigned Music Alternative_music
 716         {
 717                 Music *beg = $4;
 718                 int times = $3;
 719                 SCM alts = gh_pair_p ($5) ? gh_car ($5) : SCM_EOL;
 720                 if (times < scm_ilength (alts)) {
 721                   unsmob_music (gh_car (alts))
 722                     ->origin ()->warning (
 723                     _("More alternatives than repeats.  Junking excess alternatives."));
 724                   alts = ly_truncate_list (times, alts);
 725                 }
 726
 727                 Repeated_music * r = new Repeated_music (SCM_EOL);
 728                 if (beg)
 729                         {
 730                         r-> set_mus_property ("element", beg->self_scm ());
 731                         scm_gc_unprotect_object (beg->self_scm ());
 732                         }
 733                 r->set_mus_property ("repeat-count", gh_int2scm (times >? 1));
 734
 735                 r-> set_mus_property ("elements",alts);
 736                 SCM func = scm_primitive_eval (ly_symbol2scm ("repeat-name-to-ctor"));
 737                 SCM result = gh_call1 (func, $2);
 738
 739                 set_music_properties (r, result);
 740
 741                 r->set_spot (*$4->origin ());
 742                 $$ = r;
 743         }
 744         ;
 745
 746 Sequential_music:
 747         SEQUENTIAL '{' Music_list '}'           {
 748                 $$ = new Sequential_music (SCM_EOL);
 749                 $$->set_mus_property ("elements", ly_car ($3));
 750         }
 751         | '{' Music_list '}'            {
 752                 $$ = new Sequential_music (SCM_EOL);
 753                 $$->set_mus_property ("elements", ly_car ($2));
 754         }
 755         ;
 756
 757 Simultaneous_music:
 758         SIMULTANEOUS '{' Music_list '}'{
 759                 $$ = new Simultaneous_music (SCM_EOL);
 760                 $$->set_mus_property ("elements", ly_car ($3));
 761
 762         }
 763         | '<' Music_list '>'    {
 764                 $$ = new Simultaneous_music (SCM_EOL);
 765                 $$->set_mus_property ("elements", ly_car ($2));
 766         }
 767         ;
 768
 769 Simple_music:
 770         request_chord           { $$ = $1; }
 771         | OUTPUTPROPERTY embedded_scm embedded_scm '=' embedded_scm     {
 772                 SCM pred = $2;
 773                 if (!gh_symbol_p ($3))
 774                 {
 775                         THIS->parser_error (_ ("Second argument must be a symbol"));
 776                 }
 777                 /*hould check # args */
 778                 if (!gh_procedure_p (pred))
 779                 {
 780                         THIS->parser_error (_ ("First argument must be a procedure taking 1 argument"));
 781                 }
 782
 783                 Music *m = new Music (SCM_EOL);
 784                 m->set_mus_property ("predicate", pred);
 785                 m->set_mus_property ("grob-property", $3);
 786                 m->set_mus_property ("grob-value",  $5);
 787                 m->set_mus_property ("iterator-ctor",
 788                 Output_property_music_iterator::constructor_cxx_function);
 789
 790                 $$ = m;
 791         }
 792         | MUSIC_IDENTIFIER {
 793                 $$ = unsmob_music ($1)->clone ();
 794         }
 795         | property_def
 796         | translator_change
 797         ;
 798
 799
 800 Composite_music:
 801         CONTEXT STRING Music    {
 802                 Context_specced_music *csm =  new Context_specced_music (SCM_EOL);
 803                 csm->set_mus_property ("element", $3->self_scm ());
 804                 scm_gc_unprotect_object ($3->self_scm ());
 805
 806                 csm->set_mus_property ("context-type",$2);
 807                 csm->set_mus_property ("context-id", ly_str02scm (""));
 808
 809                 $$ = csm;
 810         }
 811         | AUTOCHANGE STRING Music       {
 812                 Music * chm = new Music_wrapper (SCM_EOL);
 813                 chm->set_mus_property ("element", $3->self_scm ());
 814                 chm->set_mus_property ("iterator-ctor", Auto_change_iterator::constructor_cxx_function);
 815
 816                 scm_gc_unprotect_object ($3->self_scm ());
 817                 chm->set_mus_property ("what", $2);
 818
 819                 $$ = chm;
 820                 chm->set_spot (*$3->origin ());
 821         }
 822         | GRACE Music {
 823 #if 1
 824         /*
 825                 The other version is for easier debugging  of
 826                 Sequential_music_iterator in combination with grace notes.
 827         */
 828
 829                 SCM start = THIS->lexer_p_->lookup_identifier ("startGraceMusic");
 830                 SCM stop = THIS->lexer_p_->lookup_identifier ("stopGraceMusic");
 831                 Music *startm = unsmob_music (start);
 832                 Music *stopm = unsmob_music (stop);
 833
 834                 SCM ms = SCM_EOL;
 835                 if (stopm) {
 836                         stopm = stopm->clone ();
 837                         ms = gh_cons (stopm->self_scm (), ms);
 838                         scm_gc_unprotect_object (stopm->self_scm ());
 839                 }
 840                 ms = gh_cons ($2->self_scm (), ms);
 841                 scm_gc_unprotect_object ($2->self_scm());
 842                 if (startm) {
 843                         startm = startm->clone ();
 844                         ms = gh_cons (startm->self_scm () , ms);
 845                         scm_gc_unprotect_object (startm->self_scm ());
 846                 }
 847
 848                 Music* seq = new Sequential_music (SCM_EOL);
 849                 seq->set_mus_property ("elements", ms);
 850
 851                 $$ = new Grace_music (SCM_EOL);
 852                 $$->set_mus_property ("element", seq->self_scm ());
 853                 scm_gc_unprotect_object (seq->self_scm ());
 854 #else
 855                 $$ = new Grace_music (SCM_EOL);
 856                 $$->set_mus_property ("element", $2->self_scm ());
 857                 scm_gc_unprotect_object ($2->self_scm ());
 858 #endif
 859         }
 860         | CONTEXT string '=' string Music {
 861                 Context_specced_music *csm =  new Context_specced_music (SCM_EOL);
 862                 csm->set_mus_property ("element", $5->self_scm ());
 863                 scm_gc_unprotect_object ($5->self_scm ());
 864
 865                 csm->set_mus_property ("context-type", $2);
 866                 csm->set_mus_property ("context-id", $4);
 867
 868                 $$ = csm;
 869         }
 870         | TIMES {
 871                 THIS->push_spot ();
 872         }
 873         /* CONTINUED */
 874                 fraction Music
 875
 876         {
 877                 int n = gh_scm2int (ly_car ($3)); int d = gh_scm2int (ly_cdr ($3));
 878                 Music *mp = $4;
 879                 $$ = new Time_scaled_music (SCM_EOL);
 880                 $$->set_spot (THIS->pop_spot ());
 881
 882
 883                 $$->set_mus_property ("element", mp->self_scm ());
 884                 scm_gc_unprotect_object (mp->self_scm ());
 885                 $$->set_mus_property ("numerator", gh_int2scm (n));
 886                 $$->set_mus_property ("denominator", gh_int2scm (d));
 887                 $$->compress (Moment (Rational (n,d)));
 888
 889         }
 890         | Repeated_music                { $$ = $1; }
 891         | Simultaneous_music            { $$ = $1; }
 892         | Sequential_music              { $$ = $1; }
 893         | TRANSPOSE pitch Music {
 894                 $$ = new Transposed_music (SCM_EOL);
 895                 Music *p = $3;
 896                 Pitch pit = *unsmob_pitch ($2);
 897
 898                 p->transpose (pit);
 899                 $$->set_mus_property ("element", p->self_scm ());
 900                 scm_gc_unprotect_object (p->self_scm ());
 901         }
 902         | TRANSPOSE steno_tonic_pitch Music {
 903                 $$ = new Transposed_music (SCM_EOL);
 904                 Music *p = $3;
 905                 Pitch pit = *unsmob_pitch ($2);
 906
 907                 p->transpose (pit);
 908                 $$->set_mus_property ("element", p->self_scm ());
 909                 scm_gc_unprotect_object (p->self_scm ());
 910
 911         }
 912         | APPLY embedded_scm Music  {
 913                 SCM ret = gh_call1 ($2, $3->self_scm ());
 914                 Music *m = unsmob_music (ret);
 915                 if (!m) {
 916                         THIS->parser_error ("\\apply must return a Music");
 917                         m = new Music (SCM_EOL);
 918                         }
 919                 $$ = m;
 920         }
 921         | NOTES
 922                 { THIS->lexer_p_->push_note_state (); }
 923         Music
 924                 { $$ = $3;
 925                   THIS->lexer_p_->pop_state ();
 926                 }
 927         | FIGURES
 928                 { THIS->lexer_p_->push_figuredbass_state (); }
 929         Music
 930                 {
 931                   Music * chm = new Untransposable_music () ;
 932                   chm->set_mus_property ("element", $3->self_scm ());
 933                   $$ = chm;
 934
 935                   THIS->lexer_p_->pop_state ();
 936         }
 937         | CHORDS
 938                 { THIS->lexer_p_->push_chord_state (); }
 939         Music
 940                 {
 941                   Music * chm = new Un_relativable_music ;
 942                   chm->set_mus_property ("element", $3->self_scm ());
 943                   $$ = chm;
 944
 945                   THIS->lexer_p_->pop_state ();
 946         }
 947         | LYRICS
 948                 { THIS->lexer_p_->push_lyric_state (); }
 949         Music
 950                 {
 951                   $$ = $3;
 952                   THIS->lexer_p_->pop_state ();
 953         }
 954         | relative_music        { $$ = $1; }
 955         | re_rhythmed_music     { $$ = $1; }
 956         | part_combined_music   { $$ = $1; }
 957         ;
 958
 959 relative_music:
 960         RELATIVE absolute_pitch Music {
 961                 Music * p = $3;
 962                 Pitch pit = *unsmob_pitch ($2);
 963                 $$ = new Relative_octave_music (SCM_EOL);
 964
 965                 $$->set_mus_property ("element", p->self_scm ());
 966                 scm_gc_unprotect_object (p->self_scm ());
 967
 968                 $$->set_mus_property ("last-pitch", p->to_relative_octave (pit).smobbed_copy ());
 969
 970         }
 971         ;
 972
 973 re_rhythmed_music:
 974         ADDLYRICS Music Music {
 975           Lyric_combine_music * l = new Lyric_combine_music (SCM_EOL);
 976           l->set_mus_property ("elements", gh_list ($2->self_scm (), $3->self_scm (), SCM_UNDEFINED));
 977           scm_gc_unprotect_object ($3->self_scm ());
 978           scm_gc_unprotect_object ($2->self_scm ());
 979           $$ = l;
 980         }
 981         ;
 982
 983 part_combined_music:
 984         PARTCOMBINE STRING Music Music {
 985                 Part_combine_music * p = new Part_combine_music (SCM_EOL);
 986
 987                 p->set_mus_property ("what", $2);
 988                 p->set_mus_property ("elements", gh_list ($3->self_scm (),$4->self_scm (), SCM_UNDEFINED));
 989
 990                 scm_gc_unprotect_object ($3->self_scm ());
 991                 scm_gc_unprotect_object ($4->self_scm ());
 992
 993                 $$ = p;
 994         }
 995         ;
 996
 997 translator_change:
 998         TRANSLATOR STRING '=' STRING  {
 999                 Music * t = new Music (SCM_EOL);
1000                 t->set_mus_property ("iterator-ctor",
1001                         Change_iterator::constructor_cxx_function);
1002                 t-> set_mus_property ("change-to-type", $2);
1003                 t-> set_mus_property ("change-to-id", $4);
1004
1005                 $$ = t;
1006                 $$->set_spot (THIS->here_input ());
1007         }
1008         ;
1009
1010 property_def:
1011         PROPERTY STRING '.' STRING '='  scalar {
1012
1013                 Music *t = set_property_music (scm_string_to_symbol ($4), $6);
1014                 Context_specced_music *csm = new Context_specced_music (SCM_EOL);
1015
1016                 csm->set_mus_property ("element", t->self_scm ());
1017                 scm_gc_unprotect_object (t->self_scm ());
1018
1019                 $$ = csm;
1020                 $$->set_spot (THIS->here_input ());
1021
1022                 csm-> set_mus_property ("context-type", $2);
1023         }
1024         | PROPERTY STRING '.' STRING UNSET {
1025                 Music *t = new Music (SCM_EOL);
1026
1027                 t->set_mus_property ("iterator-ctor",
1028                         Property_unset_iterator::constructor_cxx_function);
1029                 t->set_mus_property ("symbol", scm_string_to_symbol ($4));
1030
1031                 Context_specced_music *csm = new Context_specced_music (SCM_EOL);
1032                 csm->set_mus_property ("element", t->self_scm ());
1033                 scm_gc_unprotect_object (t->self_scm ());
1034
1035                 $$ = csm;
1036                 $$->set_spot (THIS->here_input ());
1037
1038                 csm-> set_mus_property ("context-type", $2);
1039         }
1040         | PROPERTY STRING '.' STRING SET embedded_scm '=' embedded_scm {
1041                 Music *t = new Music (SCM_EOL);
1042                 t->set_mus_property ("iterator-ctor",
1043                         Push_property_iterator::constructor_cxx_function);
1044                 t->set_mus_property ("symbol", scm_string_to_symbol ($4));
1045                 t->set_mus_property ("pop-first", SCM_BOOL_T);
1046                 t->set_mus_property ("grob-property", $6);
1047                 t->set_mus_property ("grob-value", $8);
1048                 Context_specced_music *csm = new Context_specced_music (SCM_EOL);
1049                 csm->set_mus_property ("element", t->self_scm ());
1050                 scm_gc_unprotect_object (t->self_scm ());
1051                 $$ = csm;
1052                 $$->set_spot (THIS->here_input ());
1053
1054                 csm-> set_mus_property ("context-type", $2);
1055         }
1056         | PROPERTY STRING '.' STRING OVERRIDE embedded_scm '=' embedded_scm {
1057                 Music *t = new Music (SCM_EOL);
1058                 t->set_mus_property ("iterator-ctor",
1059                         Push_property_iterator::constructor_cxx_function);
1060                 t->set_mus_property ("symbol", scm_string_to_symbol ($4));
1061                 t->set_mus_property ("grob-property", $6);
1062                 t->set_mus_property ("grob-value", $8);
1063                 Context_specced_music *csm = new Context_specced_music (SCM_EOL);
1064                 csm->set_mus_property ("element", t->self_scm ());
1065                 scm_gc_unprotect_object (t->self_scm ());
1066
1067                 $$ = csm;
1068                 $$->set_spot (THIS->here_input ());
1069
1070                 csm-> set_mus_property ("context-type", $2);
1071         }
1072         | PROPERTY STRING '.' STRING REVERT embedded_scm {
1073                 Music *t = new Music (SCM_EOL);
1074                 t->set_mus_property ("iterator-ctor",
1075                         Pop_property_iterator::constructor_cxx_function);
1076                 t->set_mus_property ("symbol", scm_string_to_symbol ($4));
1077                 t->set_mus_property ("grob-property", $6);
1078
1079                 Context_specced_music *csm = new Context_specced_music (SCM_EOL);
1080                 csm->set_mus_property ("element", t->self_scm ());
1081                 scm_gc_unprotect_object (t->self_scm ());
1082
1083                 $$ = csm;
1084                 $$->set_spot (THIS->here_input ());
1085
1086                 csm-> set_mus_property ("context-type", $2);
1087         }
1088         ;
1089
1090 scalar:
1091         string          { $$ = $1; }
1092         | bare_int      { $$ = gh_int2scm ($1); }
1093         | embedded_scm  { $$ = $1; }
1094         ;
1095
1096
1097 request_chord:
1098         pre_requests {
1099                 THIS->push_spot ();
1100         } /*cont */ simple_element post_requests        {
1101                 Music_sequence *l = dynamic_cast<Music_sequence*> ($3);
1102
1103                 $1->concat (*$4);
1104                 for (int i=0; i < $1->size (); i++) {
1105                   Music * m = $1->elem (i);
1106                   l->append_music (m);
1107                 }
1108                 $$ = $3;
1109
1110                 delete $1;
1111                 delete $4;
1112         }
1113         | command_element
1114         ;
1115
1116 command_element:
1117         command_req {
1118                 $$ = new Request_chord (SCM_EOL);
1119                 $$->set_mus_property ("elements", gh_cons ($1->self_scm (), SCM_EOL));
1120                 $$-> set_spot (THIS->here_input ());
1121                 $1-> set_spot (THIS->here_input ());
1122         }
1123         | E_BACKSLASH {
1124                 $$ = new Music (gh_list (gh_cons (ly_symbol2scm ("name"), ly_symbol2scm ("separator")), SCM_UNDEFINED));
1125                 $$->set_spot (THIS->here_input ());
1126         }
1127         | '|'      {
1128
1129                 extern Music * get_barcheck();
1130                 $$ = get_barcheck ();
1131                 $$->set_spot (THIS->here_input ());
1132         }
1133         | BAR STRING                    {
1134                 Music *t = set_property_music (ly_symbol2scm ("whichBar"), $2);
1135
1136                 Context_specced_music *csm = new Context_specced_music (SCM_EOL);
1137                 csm->set_mus_property ("element", t->self_scm ());
1138                 scm_gc_unprotect_object (t->self_scm ());
1139
1140                 $$ = csm;
1141                 $$->set_spot (THIS->here_input ());
1142
1143                 csm->set_mus_property ("context-type", ly_str02scm ("Score"));
1144         }
1145         | PARTIAL duration_length       {
1146                 Moment m = - unsmob_duration ($2)->length_mom ();
1147                 Music * p = set_property_music (ly_symbol2scm ( "measurePosition"),m.smobbed_copy ());
1148
1149                 Context_specced_music * sp = new Context_specced_music (SCM_EOL);
1150                 sp->set_mus_property ("element", p->self_scm ());
1151                 scm_gc_unprotect_object (p->self_scm ());
1152
1153                 $$ =sp ;
1154                 sp-> set_mus_property ("context-type", ly_str02scm ( "Score"));
1155         }
1156         | CLEF STRING  {
1157                 SCM func = scm_primitive_eval (ly_symbol2scm ("clef-name-to-properties"));
1158                 SCM result = gh_call1 (func, $2);
1159
1160                 SCM l = SCM_EOL;
1161                 for (SCM s = result ; gh_pair_p (s); s = ly_cdr (s)) {
1162                         Music * p = new Music (SCM_EOL);
1163                         set_music_properties (p, ly_car (s));
1164                         l = gh_cons (p->self_scm (), l);
1165                         scm_gc_unprotect_object (p->self_scm ());
1166                 }
1167                 Sequential_music * seq = new Sequential_music (SCM_EOL);
1168                 seq->set_mus_property ("elements", l);
1169
1170                 Context_specced_music * sp = new Context_specced_music (SCM_EOL);
1171                 sp->set_mus_property ("element", seq->self_scm ());
1172                 scm_gc_unprotect_object (seq->self_scm ());
1173
1174                 $$ =sp ;
1175                 sp-> set_mus_property ("context-type", ly_str02scm ("Staff"));
1176         }
1177         | TIME_T fraction  {
1178                 Music * p1 = set_property_music (ly_symbol2scm ( "timeSignatureFraction"), $2);
1179
1180                 int l = gh_scm2int (ly_car ($2));
1181                 int o = gh_scm2int (ly_cdr ($2));
1182
1183                 Moment one_beat = Moment (1)/Moment (o);
1184                 Moment len = Moment (l) * one_beat;
1185
1186
1187                 Music *p2 = set_property_music (ly_symbol2scm ("measureLength"), len.smobbed_copy ());
1188                 Music *p3 = set_property_music (ly_symbol2scm ("beatLength"), one_beat.smobbed_copy ());
1189
1190                 SCM list = scm_list_n (p1->self_scm (), p2->self_scm (), p3->self_scm(), SCM_UNDEFINED);
1191                 Sequential_music *seq = new Sequential_music (SCM_EOL);
1192                 seq->set_mus_property ("elements", list);
1193
1194
1195                 Context_specced_music * sp = new Context_specced_music (SCM_EOL);
1196                 sp->set_mus_property ("element", seq->self_scm ());
1197
1198
1199
1200                 scm_gc_unprotect_object (p3->self_scm ());
1201                 scm_gc_unprotect_object (p2->self_scm ());
1202                 scm_gc_unprotect_object (p1->self_scm ());
1203                 scm_gc_unprotect_object (seq->self_scm ());
1204
1205                 $$ = sp;
1206
1207 /*
1208  TODO: should make alias TimingContext for Score
1209 */
1210
1211                 sp-> set_mus_property ("context-type", ly_str02scm ( "Score"));
1212         }
1213         ;
1214
1215 command_req:
1216         shorthand_command_req   { $$ = $1; }
1217         | verbose_command_req   { $$ = $1; }
1218         ;
1219
1220 shorthand_command_req:
1221         extender_req {
1222                 $$ = $1;
1223         }
1224         | hyphen_req {
1225                 $$ = $1;
1226         }
1227         | '~'   {
1228                 $$ = new Tie_req;
1229         }
1230         | '['           {
1231                 Span_req*b= new Span_req;
1232                 b->set_span_dir (START);
1233                 b->set_mus_property ("span-type", ly_str02scm ("beam"));
1234                 $$ =b;
1235
1236
1237                 THIS->last_beam_start_ = b->self_scm ();
1238         }
1239         | ']'           {
1240                 Span_req*b= new Span_req;
1241                 b->set_span_dir ( STOP);
1242                 b->set_mus_property ("span-type", ly_str02scm ("beam"));
1243                 $$ = b;
1244         }
1245         | BREATHE {
1246                 $$ = new Breathing_sign_req;
1247         }
1248         | E_TILDE {
1249                 $$ = new Porrectus_req;
1250         }
1251         ;
1252
1253 verbose_command_req:
1254         COMMANDSPANREQUEST bare_int STRING { /*TODO: junkme */
1255                 Span_req * sp_p = new Span_req;
1256                 sp_p-> set_span_dir ( Direction ($2));
1257                 sp_p->set_mus_property ("span-type",$3);
1258                 sp_p->set_spot (THIS->here_input ());
1259                 $$ = sp_p;
1260         }
1261         | MARK DEFAULT  {
1262                 Mark_req * m = new Mark_req;
1263                 $$ = m;
1264         }
1265         | MARK scalar {
1266                 Mark_req *m = new Mark_req;
1267                 m->set_mus_property ("label", $2);
1268                 $$ = m;
1269
1270         }
1271         | PENALTY SCM_T         {
1272                 Break_req * b = new Break_req;
1273                 SCM s = $2;
1274                 if (!gh_number_p (s))
1275                         s  =gh_int2scm (0);
1276
1277                 b->set_mus_property ("penalty", s);
1278                 b->set_spot (THIS->here_input ());
1279                 $$ = b;
1280         }
1281         | SKIP duration_length {
1282                 Skip_req * skip_p = new Skip_req;
1283                 skip_p->set_mus_property ("duration", $2);
1284
1285                 $$ = skip_p;
1286         }
1287         | tempo_request {
1288                 $$ = $1;
1289         }
1290         | KEY DEFAULT {
1291                 Key_change_req *key_p= new Key_change_req;
1292                 $$ = key_p;
1293         }
1294         | KEY NOTENAME_PITCH SCM_IDENTIFIER     {
1295                 Key_change_req *key_p= new Key_change_req;
1296
1297                 key_p->set_mus_property ("pitch-alist", $3);
1298                 ((Music*)key_p)->transpose (* unsmob_pitch ($2));
1299                 $$ = key_p;
1300         }
1301         ;
1302
1303 post_requests:
1304         {
1305                 $$ = new Link_array<Request>;
1306         }
1307         | post_requests post_request {
1308                 $2->set_spot (THIS->here_input ());
1309                 $$->push ($2);
1310         }
1311         ;
1312
1313 post_request:
1314         verbose_request
1315         | request_with_dir
1316         | close_request
1317         ;
1318
1319
1320 request_that_take_dir:
1321         gen_text_def
1322         | verbose_request
1323         | script_abbreviation {
1324                 SCM s = THIS->lexer_p_->lookup_identifier ("dash" + ly_scm2string ($1));
1325                 Articulation_req *a = new Articulation_req;
1326                 if (gh_string_p (s))
1327                         a->set_mus_property ("articulation-type", s);
1328                 else THIS->parser_error (_ ("Expecting string as script definition"));
1329                 $$ = a;
1330         }
1331         ;
1332
1333 request_with_dir:
1334         script_dir request_that_take_dir        {
1335                 if (Script_req * gs = dynamic_cast<Script_req*> ($2))
1336                         gs->set_direction (Direction ($1));
1337                 else if ($1)
1338                         $2->origin ()->warning (_ ("Can't specify direction for this request"));
1339                 $$ = $2;
1340         }
1341         ;
1342
1343 verbose_request:
1344         REQUEST_IDENTIFIER      {
1345                 $$ = dynamic_cast<Request*> (unsmob_music ($1)->clone ());
1346                 $$->set_spot (THIS->here_input ());
1347         }
1348         | DYNAMICSCRIPT embedded_scm {
1349                 /*
1350                         TODO: junkme, use text-type == dynamic
1351                 */
1352                 Text_script_req *d = new Text_script_req;
1353                 SCM dyn = ly_symbol2scm ("dynamic");
1354                 d->set_mus_property ("text-type" , dyn);
1355                 d->set_mus_property ("text", $2);
1356                 d->set_spot (THIS->here_input ());
1357                 $$ = d;
1358         }
1359         | SPANREQUEST bare_int STRING {
1360                 Span_req * sp_p = new Span_req;
1361                 sp_p->set_span_dir ( Direction ($2));
1362                 sp_p->set_mus_property ("span-type", $3);
1363                 sp_p->set_spot (THIS->here_input ());
1364                 $$ = sp_p;
1365         }
1366         | tremolo_type  {
1367                Tremolo_req* a = new Tremolo_req;
1368                a->set_spot (THIS->here_input ());
1369                a->set_mus_property ("tremolo-type", gh_int2scm ($1));
1370                $$ = a;
1371         }
1372         | SCRIPT STRING         {
1373                 Articulation_req * a = new Articulation_req;
1374                 a->set_mus_property ("articulation-type", $2);
1375                 a->set_spot (THIS->here_input ());
1376                 $$ = a;
1377         }
1378         /*
1379 duh, junk this syntax from the parser, if possible.
1380         */
1381         | ARPEGGIO {
1382                 Arpeggio_req *a = new Arpeggio_req;
1383                 a->set_spot (THIS->here_input ());
1384                 $$ = a;
1385         }
1386         | GLISSANDO {
1387                 Glissando_req *g = new Glissando_req;
1388                 g->set_spot /* No pun intended */ (THIS->here_input ());
1389                 $$ = g;
1390         }
1391         ;
1392
1393 sup_quotes:
1394         '\'' {
1395                 $$ = 1;
1396         }
1397         | sup_quotes '\'' {
1398                 $$ ++;
1399         }
1400         ;
1401
1402 sub_quotes:
1403         ',' {
1404                 $$ = 1;
1405         }
1406         | sub_quotes ',' {
1407                 $$ ++ ;
1408         }
1409         ;
1410
1411 steno_pitch:
1412         NOTENAME_PITCH  {
1413                 $$ = $1;
1414         }
1415         | NOTENAME_PITCH sup_quotes     {
1416                 Pitch p = *unsmob_pitch ($1);
1417                 p.octave_i_ +=  $2;
1418                 $$ = p.smobbed_copy ();
1419         }
1420         | NOTENAME_PITCH sub_quotes      {
1421                 Pitch p =* unsmob_pitch ($1);
1422
1423                 p.octave_i_ +=  -$2;
1424                 $$ = p.smobbed_copy ();
1425
1426         }
1427         ;
1428
1429 /*
1430 ugh. duplication
1431 */
1432
1433 steno_tonic_pitch:
1434         TONICNAME_PITCH {
1435                 $$ = $1;
1436         }
1437         | TONICNAME_PITCH sup_quotes    {
1438                 Pitch p = *unsmob_pitch ($1);
1439                 p.octave_i_ +=  $2;
1440                 $$ = p.smobbed_copy ();
1441         }
1442         | TONICNAME_PITCH sub_quotes     {
1443                 Pitch p =* unsmob_pitch ($1);
1444
1445                 p.octave_i_ +=  -$2;
1446                 $$ = p.smobbed_copy ();
1447
1448         }
1449         ;
1450
1451 pitch:
1452         steno_pitch {
1453                 $$ = $1;
1454         }
1455         | explicit_pitch {
1456                 $$ = $1;
1457         }
1458         ;
1459
1460 explicit_pitch:
1461         PITCH embedded_scm {
1462                 $$ = $2;
1463                 if (!unsmob_pitch ($2)) {
1464                         THIS->parser_error (_f ("Expecting musical-pitch value", 3));
1465                          $$ = Pitch ().smobbed_copy ();
1466                 }
1467         }
1468         ;
1469
1470 verbose_duration:
1471         DURATION embedded_scm   {
1472                 $$ = $2;
1473                 if (!unsmob_duration ($2))
1474                 {
1475                         THIS->parser_error (_ ("Must have duration object"));
1476                         $$ = Duration ().smobbed_copy ();
1477                 }
1478         }
1479         ;
1480
1481 extender_req:
1482         EXTENDER {
1483                 if (!THIS->lexer_p_->lyric_state_b ())
1484                         THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
1485                 $$ = new Extender_req;
1486         }
1487         ;
1488
1489 hyphen_req:
1490         HYPHEN {
1491                 if (!THIS->lexer_p_->lyric_state_b ())
1492                         THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
1493                 $$ = new Hyphen_req;
1494         }
1495         ;
1496
1497 close_request:
1498         close_request_parens {
1499                 $$ = $1;
1500                 dynamic_cast<Span_req*> ($$)->set_span_dir ( START);
1501         }
1502
1503 close_request_parens:
1504         '('     {
1505                 Span_req* s= new Span_req;
1506                 $$ = s;
1507                 s->set_mus_property ("span-type", ly_str02scm ( "slur"));
1508         }
1509         | E_OPEN        {
1510                 Span_req* s= new Span_req;
1511                 $$ = s;
1512                 s->set_mus_property ("span-type", ly_str02scm ( "phrasing-slur"));
1513         }
1514         | E_SMALLER {
1515                 Span_req*s =new Span_req;
1516                 $$ = s;
1517                 s->set_mus_property ("span-type", ly_str02scm ( "crescendo"));
1518         }
1519         | E_BIGGER {
1520                 Span_req*s =new Span_req;
1521                 $$ = s;
1522                 s->set_mus_property ("span-type", ly_str02scm ("decrescendo"));
1523         }
1524         ;
1525
1526
1527 open_request:
1528         open_request_parens {
1529                 $$ = $1;
1530                 dynamic_cast<Span_req*> ($$)->set_span_dir (STOP);
1531         }
1532         ;
1533
1534 open_request_parens:
1535         E_EXCLAMATION   {
1536                 Span_req *s =  new Span_req;
1537                 s->set_mus_property ("span-type", ly_str02scm ( "crescendo"));
1538
1539                 $$ = s;
1540         }
1541         | ')'   {
1542                 Span_req* s= new Span_req;
1543                 $$ = s;
1544                 s->set_mus_property ("span-type", ly_str02scm ( "slur"));
1545         }
1546         | E_CLOSE       {
1547                 Span_req* s= new Span_req;
1548                 $$ = s;
1549                 s->set_mus_property ("span-type", ly_str02scm ( "phrasing-slur"));
1550         }
1551         ;
1552
1553 gen_text_def:
1554         embedded_scm {
1555                 Text_script_req *t = new Text_script_req;
1556                 t->set_mus_property ("text", $1);
1557                 t->set_spot (THIS->here_input ());
1558                 $$ = t;
1559         }
1560         | string {
1561                 Text_script_req *t = new Text_script_req;
1562                 t->set_mus_property ("text", $1);
1563                 t->set_spot (THIS->here_input ());
1564                 $$ = t;
1565         }
1566         | DIGIT {
1567                 String ds = to_str ($1);
1568                 Text_script_req* t = new Text_script_req;
1569                 SCM finger = ly_symbol2scm ("finger");
1570                 t->set_mus_property ("text",  ly_str02scm (ds.ch_C ()));
1571                 t->set_mus_property ("text-type" , finger);
1572                 t->set_spot (THIS->here_input ());
1573                 $$ = t;
1574         }
1575         ;
1576
1577 script_abbreviation:
1578         '^'             {
1579                 $$ = gh_str02scm ("Hat");
1580         }
1581         | '+'           {
1582                 $$ = gh_str02scm ("Plus");
1583         }
1584         | '-'           {
1585                 $$ = gh_str02scm ("Dash");
1586         }
1587         | '|'           {
1588                 $$ = gh_str02scm ("Bar");
1589         }
1590         | '>'           {
1591                 $$ = gh_str02scm ("Larger");
1592         }
1593         | '.'           {
1594                 $$ = gh_str02scm ("Dot");
1595         }
1596         ;
1597
1598 script_dir:
1599         '_'     { $$ = DOWN; }
1600         | '^'   { $$ = UP; }
1601         | '-'   { $$ = CENTER; }
1602         ;
1603
1604 pre_requests:
1605         {
1606                 $$ = new Link_array<Request>;
1607         }
1608         | pre_requests open_request {
1609                 $$->push ($2);
1610         }
1611         ;
1612
1613 absolute_pitch:
1614         steno_pitch     {
1615                 $$ = $1;
1616         }
1617         ;
1618
1619 duration_length:
1620         multiplied_duration {
1621                 $$ = $1;
1622         }
1623         | verbose_duration {
1624                 $$ = $1;
1625         }
1626         ;
1627
1628 optional_notemode_duration:
1629         {
1630                 Duration dd = THIS->default_duration_;
1631                 $$ = dd.smobbed_copy ();
1632
1633                 THIS->beam_check ($$);
1634         }
1635         | multiplied_duration   {
1636                 $$ = $1;
1637                 THIS->default_duration_ = *unsmob_duration ($$);
1638
1639                 THIS->beam_check ($$);
1640         }
1641         | verbose_duration {
1642                 $$ = $1;
1643                 THIS->default_duration_ = *unsmob_duration ($$);
1644         }
1645         ;
1646
1647 steno_duration:
1648         bare_unsigned dots              {
1649                 int l = 0;
1650                 if (!is_duration_b ($1))
1651                         THIS->parser_error (_f ("not a duration: %d", $1));
1652                 else
1653                         l =  intlog2 ($1);
1654
1655                 $$ = Duration (l, $2).smobbed_copy ();
1656         }
1657         | DURATION_IDENTIFIER dots      {
1658                 Duration *d =unsmob_duration ($1);
1659                 Duration k (d->duration_log (),d->dot_count () + $2);
1660                 $$ = k.smobbed_copy ();
1661         }
1662         ;
1663
1664
1665
1666
1667 multiplied_duration:
1668         steno_duration {
1669                 $$ = $1;
1670         }
1671         | multiplied_duration '*' bare_unsigned {
1672                 $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
1673         }
1674         | multiplied_duration '*' FRACTION {
1675                 Rational  m (gh_scm2int (ly_car ($3)), gh_scm2int (ly_cdr ($3)));
1676
1677                 $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
1678         }
1679         ;
1680
1681 fraction:
1682         FRACTION { $$ = $1; }
1683         | UNSIGNED '/' UNSIGNED {
1684                 $$ = gh_cons (gh_int2scm ($1), gh_int2scm ($3));
1685         }
1686         ;
1687
1688 dots:
1689         /* empty */     {
1690                 $$ = 0;
1691         }
1692         | dots '.' {
1693                 $$ ++;
1694         }
1695         ;
1696
1697
1698 tremolo_type:
1699         ':'     {
1700                 $$ =0;
1701         }
1702         | ':' bare_unsigned {
1703                 if (!is_duration_b ($2))
1704                         THIS->parser_error (_f ("not a duration: %d", $2));
1705                 $$ = $2;
1706         }
1707         ;
1708
1709
1710 bass_number:
1711         DIGIT
1712         | UNSIGNED
1713         ;
1714
1715 bass_mod:
1716         '-'     { $$ = -1; }
1717         | '+'   { $$ = 1; }
1718         | '!'   { $$ = 0; }
1719         ;
1720
1721 bass_figure:
1722         FIGURE_SPACE {
1723                 Bass_figure_req *bfr = new Bass_figure_req;
1724                 $$ = bfr->self_scm();
1725                 scm_gc_unprotect_object ($$);
1726         }
1727         | bass_number  {
1728                 Bass_figure_req *bfr = new Bass_figure_req;
1729                 $$ = bfr->self_scm();
1730
1731                 bfr->set_mus_property ("figure", gh_int2scm ($1));
1732
1733                 scm_gc_unprotect_object ($$);
1734         }
1735         | bass_figure bass_mod {
1736                 Music *m = unsmob_music ($1);
1737                 if ($2) {
1738                         SCM salter =m->get_mus_property ("alteration");
1739                         int alter = gh_number_p( salter) ? gh_scm2int (salter) : 0;
1740                         m->set_mus_property ("alteration",
1741                                 gh_int2scm (alter + $2));
1742                 } else {
1743                         m->set_mus_property ("alteration", gh_int2scm (0));
1744                 }
1745         }
1746         ;
1747
1748 br_bass_figure:
1749         '[' bass_figure {
1750                 $$ = $2;
1751                 unsmob_music ($$)->set_mus_property ("bracket-start", SCM_BOOL_T);
1752         }
1753         | bass_figure   {
1754                 $$ = $1;
1755         }
1756         | br_bass_figure ']' {
1757                 $$ = $1;
1758                 unsmob_music ($1)->set_mus_property ("bracket-stop", SCM_BOOL_T);
1759         }
1760         ;
1761
1762 figure_list:
1763         /**/            {
1764                 $$ = SCM_EOL;
1765         }
1766         | figure_list br_bass_figure {
1767                 $$ = gh_cons ($2, $1);
1768         }
1769         ;
1770
1771 figure_spec:
1772         FIGURE_OPEN figure_list FIGURE_CLOSE {
1773                 Music * m = new Request_chord (SCM_EOL);
1774                 $2 = scm_reverse_x ($2, SCM_EOL);
1775                 m->set_mus_property ("elements",  $2);
1776                 $$ = m->self_scm ();
1777         }
1778         ;
1779
1780
1781 optional_rest:
1782         /**/   { $$ = 0; }
1783         | REST { $$ = 1; }
1784         ;
1785
1786 simple_element:
1787         pitch exclamations questions optional_notemode_duration optional_rest {
1788
1789                 Input i = THIS->pop_spot ();
1790                 if (!THIS->lexer_p_->note_state_b ())
1791                         THIS->parser_error (_ ("Have to be in Note mode for notes"));
1792
1793                 Music *n = 0;
1794                 if ($5)
1795                         n =  new Rest_req ;
1796                 else
1797                         n =  new Note_req;
1798
1799                 n->set_mus_property ("pitch", $1);
1800                 n->set_mus_property ("duration", $4);
1801
1802
1803                 if ($3 % 2)
1804                         n->set_mus_property ("cautionary", SCM_BOOL_T);
1805                 if ($2 % 2 || $3 % 2)
1806                         n->set_mus_property ("force-accidental", SCM_BOOL_T);
1807
1808                 Simultaneous_music*v = new Request_chord (SCM_EOL);
1809                 v->set_mus_property ("elements", scm_list_n (n->self_scm (), SCM_UNDEFINED));
1810
1811                 v->set_spot (i);
1812                 n->set_spot (i);
1813                 $$ = v;
1814         }
1815         | figure_spec optional_notemode_duration {
1816                 Music * m = unsmob_music ($1);
1817                 Input i = THIS->pop_spot ();
1818                 m->set_spot (i);
1819                 for (SCM s = m->get_mus_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
1820                         {
1821                                 unsmob_music (ly_car (s))->set_mus_property ("duration", $2);
1822                         }
1823                 $$ = m;
1824         }
1825         | RESTNAME optional_notemode_duration           {
1826
1827                 Input i = THIS->pop_spot ();
1828                 SCM e = SCM_UNDEFINED;
1829                 if (ly_scm2string ($1) =="s") {
1830                         /* Space */
1831                         Skip_req * skip_p = new Skip_req;
1832                         skip_p->set_mus_property ("duration" ,$2);
1833                         skip_p->set_spot (i);
1834                         e = skip_p->self_scm ();
1835                   }
1836                   else {
1837                         Rest_req * rest_req_p = new Rest_req;
1838                         rest_req_p->set_mus_property ("duration", $2);
1839                         rest_req_p->set_spot (i);
1840                         e = rest_req_p->self_scm ();
1841                     }
1842                 Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
1843                 velt_p-> set_mus_property ("elements", scm_list_n (e,SCM_UNDEFINED));
1844                 velt_p->set_spot (i);
1845
1846                 $$ = velt_p;
1847         }
1848         | MULTI_MEASURE_REST optional_notemode_duration         {
1849                 Input i = THIS->pop_spot ();
1850
1851                 Skip_req * sk = new Skip_req;
1852                 sk->set_mus_property ("duration", $2);
1853                 Span_req *sp1 = new Span_req;
1854                 Span_req *sp2 = new Span_req;
1855                 sp1-> set_span_dir ( START);
1856                 sp2-> set_span_dir ( STOP);
1857                 SCM r = ly_str02scm ("rest");
1858                 sp1->set_mus_property ("span-type", r);
1859                 sp2->set_mus_property ("span-type", r);
1860
1861                 Request_chord * rqc1 = new Request_chord (SCM_EOL);
1862                 rqc1->set_mus_property ("elements", scm_list_n (sp1->self_scm (), SCM_UNDEFINED));
1863                 Request_chord * rqc2 = new Request_chord (SCM_EOL);
1864                 rqc2->set_mus_property ("elements", scm_list_n (sk->self_scm (), SCM_UNDEFINED));;
1865                 Request_chord * rqc3 = new Request_chord (SCM_EOL);
1866                 rqc3->set_mus_property ("elements", scm_list_n (sp2->self_scm (), SCM_UNDEFINED));;
1867
1868                 SCM ms = scm_list_n (rqc1->self_scm (), rqc2->self_scm (), rqc3->self_scm (), SCM_UNDEFINED);
1869
1870                 $$ = new Sequential_music (SCM_EOL);
1871                 $$->set_mus_property ("elements", ms);
1872         }
1873         | STRING optional_notemode_duration     {
1874                 Input i = THIS->pop_spot ();
1875
1876                 Lyric_req* lreq_p = new Lyric_req;
1877                 lreq_p->set_mus_property ("text", $1);
1878                 lreq_p->set_mus_property ("duration",$2);
1879                 lreq_p->set_spot (i);
1880                 Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
1881                 velt_p->set_mus_property ("elements", scm_list_n (lreq_p->self_scm (), SCM_UNDEFINED));
1882
1883                 $$= velt_p;
1884         }
1885         | chord {
1886                 Input i = THIS->pop_spot ();
1887
1888                 if (!THIS->lexer_p_->chord_state_b ())
1889                         THIS->parser_error (_ ("Have to be in Chord mode for chords"));
1890                 $$ = $1;
1891         }
1892         ;
1893
1894
1895 chord:
1896         steno_tonic_pitch optional_notemode_duration chord_additions chord_subtractions chord_inversion chord_bass {
1897                 $$ = Chord::get_chord ($1, $3, $4, $5, $6, $2);
1898                 $$->set_spot (THIS->here_input ());
1899         };
1900
1901 chord_additions:
1902         {
1903                 $$ = SCM_EOL;
1904         }
1905         | CHORD_COLON chord_notes {
1906                 $$ = $2;
1907         }
1908         ;
1909
1910 chord_notes:
1911         chord_step {
1912                 $$ = $1
1913         }
1914         | chord_notes '.' chord_step {
1915                 $$ = gh_append2 ($$, $3);
1916         }
1917         ;
1918
1919 chord_subtractions:
1920         {
1921                 $$ = SCM_EOL;
1922         }
1923         | CHORD_CARET chord_notes {
1924                 $$ = $2;
1925         }
1926         ;
1927
1928
1929 chord_inversion:
1930         {
1931                 $$ = SCM_EOL;
1932         }
1933         | '/' steno_tonic_pitch {
1934                 $$ = $2;
1935         }
1936         ;
1937
1938 chord_bass:
1939         {
1940                 $$ = SCM_EOL;
1941         }
1942         | CHORD_BASS steno_tonic_pitch {
1943                 $$ = $2;
1944         }
1945         ;
1946
1947 chord_step:
1948         chord_note {
1949                 $$ = gh_cons ($1, SCM_EOL);
1950         }
1951         | CHORDMODIFIER_PITCH {
1952                 $$ = gh_cons (unsmob_pitch ($1)->smobbed_copy (), SCM_EOL);
1953         }
1954         | CHORDMODIFIER_PITCH chord_note { /* Ugh. */
1955                 $$ = scm_list_n (unsmob_pitch ($1)->smobbed_copy (),
1956                         $2, SCM_UNDEFINED);
1957         }
1958         ;
1959
1960 chord_note:
1961         bare_unsigned {
1962                  Pitch m;
1963                 m.notename_i_ = ($1 - 1) % 7;
1964                 m.octave_i_ = $1 > 7 ? 1 : 0;
1965                 m.alteration_i_ = 0;
1966
1967                 $$ = m.smobbed_copy ();
1968         }
1969         | bare_unsigned '+' {
1970                 Pitch m;
1971                 m.notename_i_ = ($1 - 1) % 7;
1972                 m.octave_i_ = $1 > 7 ? 1 : 0;
1973                 m.alteration_i_ = 1;
1974
1975
1976                 $$ = m.smobbed_copy ();
1977         }
1978         | bare_unsigned CHORD_MINUS {
1979                 Pitch m;
1980                 m.notename_i_ = ($1 - 1) % 7;
1981                 m.octave_i_ = $1 > 7 ? 1 : 0;
1982                 m.alteration_i_ = -1;
1983
1984                 $$ = m.smobbed_copy ();
1985         }
1986         ;
1987
1988 /*
1989         UTILITIES
1990  */
1991 number_expression:
1992         number_expression '+' number_term {
1993                 $$ = scm_sum ($1, $3);
1994         }
1995         | number_expression '-' number_term {
1996                 $$ = scm_difference ($1, $3);
1997         }
1998         | number_term
1999         ;
2000
2001 number_term:
2002         number_factor {
2003                 $$ = $1;
2004         }
2005         | number_factor '*' number_factor {
2006                 $$ = scm_product ($1, $3);
2007         }
2008         | number_factor '/' number_factor {
2009                 $$ = scm_divide ($1, $3);
2010         }
2011         ;
2012
2013 number_factor:
2014         '(' number_expression ')'       {
2015                 $$ = $2;
2016         }
2017         | '-'  number_factor { /* %prec UNARY_MINUS */
2018                 $$ = scm_difference ($2, SCM_UNDEFINED);
2019         }
2020         | bare_number
2021         ;
2022
2023
2024 bare_number:
2025         UNSIGNED        {
2026                 $$ = gh_int2scm ($1);
2027         }
2028         | REAL          {
2029                 $$ = $1;
2030         }
2031         | NUMBER_IDENTIFIER             {
2032                 $$ = $1;
2033         }
2034         | REAL CM_T     {
2035                 $$ = gh_double2scm (gh_scm2double ($1) CM );
2036         }
2037         | REAL PT_T     {
2038                 $$ = gh_double2scm (gh_scm2double ($1) PT);
2039         }
2040         | REAL IN_T     {
2041                 $$ = gh_double2scm (gh_scm2double ($1) INCH);
2042         }
2043         | REAL MM_T     {
2044                 $$ = gh_double2scm (gh_scm2double ($1) MM);
2045         }
2046         | REAL CHAR_T   {
2047                 $$ = gh_double2scm (gh_scm2double ($1) CHAR);
2048         }
2049         ;
2050
2051
2052 bare_unsigned:
2053         UNSIGNED {
2054                         $$ = $1;
2055         }
2056         | DIGIT {
2057                 $$ = $1;
2058         }
2059         ;
2060
2061 bare_int:
2062         bare_number {
2063                 if (scm_integer_p ($1) == SCM_BOOL_T)
2064                 {
2065                         int k = gh_scm2int ($1);
2066                         $$ = k;
2067                 } else
2068                 {
2069                         THIS->parser_error (_ ("need integer number arg"));
2070                         $$ = 0;
2071                 }
2072         }
2073         | '-' bare_int {
2074                 $$ = -$2;
2075         }
2076         ;
2077
2078
2079 string:
2080         STRING          {
2081                 $$ = $1;
2082         }
2083         | STRING_IDENTIFIER     {
2084                 $$ = $1;
2085         }
2086         | string '+' string {
2087                 $$ = scm_string_append (scm_list_n ($1, $3, SCM_UNDEFINED));
2088         }
2089         ;
2090
2091
2092 exclamations:
2093                 { $$ = 0; }
2094         | exclamations '!'      { $$ ++; }
2095         ;
2096
2097 questions:
2098                 { $$ = 0; }
2099         | questions '?' { $$ ++; }
2100         ;
2101
2102
2103 %%
2104
2105 void
2106 My_lily_parser::set_yydebug (bool b)
2107 {
2108 #ifdef YYDEBUG
2109         yydebug = b;
2110 #endif
2111 }
2112
2113 extern My_lily_parser * current_parser;
2114
2115 void
2116 My_lily_parser::do_yyparse ()
2117 {
2118
2119         current_parser = this;;
2120         yyparse ((void*)this);
2121 }
2122
2123
2124 /*
2125 Should make this optional?    It will also complain when you do
2126
2127         [s4]
2128
2129 which is entirely legitimate.
2130
2131 Or we can scrap it. Barchecks should detect wrong durations, and
2132 skipTypesetting speeds it up a lot.
2133 */
2134 void
2135 My_lily_parser::beam_check (SCM dur)
2136 {
2137   Duration *d = unsmob_duration (dur);
2138   if (unsmob_music (last_beam_start_) && d->duration_log () <= 2)
2139     {
2140       Music * m = unsmob_music (last_beam_start_);
2141       m->origin ()->warning (_("Suspect duration found following this beam"));
2142     }
2143   last_beam_start_ = SCM_EOL;
2144 }