]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/parser.yy
release: 1.5.33
[lilypond.git] / lily / parser.yy
index 46db204f928cac7de02ca5a69e6dd5d7a3a99696..4f3942169454d53111fd74a13ebe0de890c7b797 100644 (file)
     -
  */
 
+/*
+
+the rules for who is protecting what are very shady. TODO: uniformise
+this.
+
+
+*/
+
 #include <ctype.h>
 #include <iostream.h>
 
@@ -45,7 +53,7 @@
 #include "transposed-music.hh"
 #include "time-scaled-music.hh"
 #include "repeated-music.hh"
-
+#include "untransposable-music.hh"
 #include "lilypond-input-version.hh"
 #include "grace-music.hh"
 #include "part-combine-music.hh"
@@ -91,9 +99,9 @@ is_duration_b (int t)
 void
 set_music_properties (Music *p, SCM a)
 {
-  for (SCM k = a; gh_pair_p (k); k = gh_cdr (k))
+  for (SCM k = a; gh_pair_p (k); k = ly_cdr (k))
        {
-       p->set_mus_property (gh_caar (k), gh_cdar (k));
+       p->internal_set_mus_property (ly_caar (k), ly_cdar (k));
        }
 }
 
@@ -180,15 +188,15 @@ yylex (YYSTYPE *s,  void * v_l)
 %token CONSISTS
 %token DURATION
 %token SEQUENTIAL
-%token ELEMENTDESCRIPTIONS
+%token GROBDESCRIPTIONS
 %token SIMULTANEOUS
 %token CONSISTSEND
 %token DENIES
 %token DURATION
 %token EXTENDER
-%token FONT
+%token FIGURES FIGURE_OPEN FIGURE_CLOSE
 %token GLISSANDO
-%token GRACE NGRACE
+%token GRACE 
 %token HEADER
 %token HYPHEN
 %token IN_T
@@ -233,10 +241,13 @@ yylex (YYSTYPE *s,  void * v_l)
 %token CONTEXT
 
 /* escaped */
-%token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER E_OPEN E_CLOSE
+%token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER E_OPEN E_CLOSE E_TILDE
+%token E_BACKSLASH
 %token CHORD_BASS CHORD_COLON CHORD_MINUS CHORD_CARET 
 
 %type <i>      exclamations questions dots
+%type <i>      bass_number bass_mod
+%type <scm>    bass_figure figure_list figure_spec
 %token <i>     DIGIT
 %token <scm>   NOTENAME_PITCH
 %token <scm>   TONICNAME_PITCH
@@ -265,7 +276,8 @@ yylex (YYSTYPE *s,  void * v_l)
 %type <request> request_with_dir request_that_take_dir verbose_request
 %type <i>      sub_quotes sup_quotes
 %type <music>  simple_element  request_chord command_element Simple_music  Composite_music 
-%type <music>  Alternative_music Repeated_music
+%type <music>  Repeated_music
+%type <scm>     Alternative_music
 %type <i>      tremolo_type
 %type <i>      bare_int  bare_unsigned
 %type <i>      script_dir
@@ -273,7 +285,7 @@ yylex (YYSTYPE *s,  void * v_l)
 %type <scm>    identifier_init 
 
 %type <scm> steno_duration optional_notemode_duration multiplied_duration
-%type <scm>  explicit_duration
+%type <scm>  verbose_duration
        
 %type <reqvec>  pre_requests post_requests
 %type <request> gen_text_def
@@ -286,7 +298,7 @@ yylex (YYSTYPE *s,  void * v_l)
 %type <scm>    duration_length fraction
 
 %type <scm>  embedded_scm scalar
-%type <music>  Music Sequential_music Simultaneous_music Music_sequence
+%type <music>  Music Sequential_music Simultaneous_music 
 %type <music>  relative_music re_rhythmed_music part_combined_music
 %type <music>  property_def translator_change
 %type <scm> Music_list
@@ -336,7 +348,7 @@ toplevel_expression:
        }
        | lilypond_header {
                if (global_header_p)
-                       scm_unprotect_object (global_header_p->self_scm ());
+                       scm_gc_unprotect_object (global_header_p->self_scm ());
                global_header_p = $1;
        }
        | score_block {
@@ -372,12 +384,12 @@ notenames_body:
          int i = scm_ilength ($1);
 
          SCM tab = scm_make_vector (gh_int2scm (i), SCM_EOL);
-         for (SCM s = $1; gh_pair_p (s); s = gh_cdr (s)) {
-               SCM pt = gh_cdar (s);
+         for (SCM s = $1; gh_pair_p (s); s = ly_cdr (s)) {
+               SCM pt = ly_cdar (s);
                if (!unsmob_pitch (pt))
                        THIS->parser_error ("Need pitch object.");
                else
-                       scm_hashq_set_x (tab, gh_caar (s), pt);
+                       scm_hashq_set_x (tab, ly_caar (s), pt);
          }
 
          $$ = tab;
@@ -409,7 +421,7 @@ lilypond_header:
 */
 assignment:
        STRING {
-               THIS->remember_spot ();
+               THIS->push_spot ();
        }
        /* cont */ '=' identifier_init  {
 
@@ -440,24 +452,24 @@ all objects can be unprotected as soon as they're here.
 identifier_init:
        score_block {
                $$ = $1->self_scm ();
-               scm_unprotect_object ($$);
+               scm_gc_unprotect_object ($$);
        }
        | output_def {
                $$ = $1->self_scm ();
-               scm_unprotect_object ($$);
+               scm_gc_unprotect_object ($$);
        }
        | translator_spec_block {
                $$ = $1;
        }
        | Music  {
                $$ = $1->self_scm ();
-               scm_unprotect_object ($$);
+               scm_gc_unprotect_object ($$);
        }
        | post_request {
                $$ = $1->self_scm ();
-               scm_unprotect_object ($$);
+               scm_gc_unprotect_object ($$);
        }
-       | explicit_duration {
+       | verbose_duration {
                $$ = $1;
        }
        | number_expression {
@@ -510,11 +522,11 @@ translator_spec_body:
                Translator_def*td = unsmob_translator_def ($$);
                td->type_aliases_ = gh_cons ($3, td->type_aliases_);
        }
-       | translator_spec_body ELEMENTDESCRIPTIONS embedded_scm {
-               for (SCM p = $3; gh_pair_p (p); p = gh_cdr (p))
-                       unsmob_translator_def ($$)
-                       ->add_property_assign (scm_symbol_to_string (gh_caar (p)), gh_cdar (p));
-
+       | translator_spec_body GROBDESCRIPTIONS embedded_scm {
+               Translator_def*td = unsmob_translator_def($$);
+               // td->add_property_assign (ly_symbol2scm ("allGrobDescriptions"), $3);
+               for (SCM p = $3; gh_pair_p (p); p = ly_cdr (p))
+                       td->add_property_assign (scm_symbol_to_string (ly_caar (p)), ly_cdar (p));
        }
        | translator_spec_body CONSISTSEND STRING  {
                unsmob_translator_def ($$)->add_last_element ( $3);
@@ -535,7 +547,7 @@ translator_spec_body:
 */
 score_block:
        SCORE { 
-               THIS->remember_spot ();
+               THIS->push_spot ();
        }
        /*cont*/ '{' score_body '}'     {
                THIS->pop_spot ();
@@ -555,7 +567,7 @@ score_body:
        
                $$->set_spot (THIS->here_input ());
                SCM m = $1->self_scm ();
-               scm_unprotect_object (m);
+               scm_gc_unprotect_object (m);
                $$->music_ = m;
        }
        | SCORE_IDENTIFIER {
@@ -563,7 +575,7 @@ score_body:
                $$->set_spot (THIS->here_input ());
        }
        | score_body lilypond_header    {
-               scm_unprotect_object ($2->self_scm ()); 
+               scm_gc_unprotect_object ($2->self_scm ()); 
                $$->header_p_ = $2;
        }
        | score_body output_def {
@@ -653,15 +665,22 @@ tempo_request:
        }
        ;
 
+/*
+The representation of a  list is the
+
+  (LIST . LAST-CONS)
+
+ to have  efficient append.
+*/
 Music_list: /* empty */ {
                $$ = gh_cons (SCM_EOL, SCM_EOL);
        }
        | Music_list Music {
                SCM s = $$;
                SCM c = gh_cons ($2->self_scm (), SCM_EOL);
-               scm_unprotect_object ($2->self_scm ()); /* UGH */
-               if (gh_pair_p (gh_cdr (s)))
-                       gh_set_cdr_x (gh_cdr (s), c); /* append */
+               scm_gc_unprotect_object ($2->self_scm ()); /* UGH */
+               if (gh_pair_p (ly_cdr (s)))
+                       gh_set_cdr_x (ly_cdr (s), c); /* append */
                else
                        gh_set_car_x (s, c); /* set first cons */
                gh_set_cdr_x (s, c) ;  /* remember last cell */ 
@@ -678,42 +697,36 @@ Music:
 
 Alternative_music:
        /* empty */ {
-               $$ = 0;
+               $$ = SCM_EOL;
        }
-       | ALTERNATIVE Music_sequence {
-               $$ = $2;
-               $2->set_spot (THIS->here_input ());
+       | ALTERNATIVE '{' Music_list '}' {
+               $$ = $3;
        }
        ;
 
-
-
-
 Repeated_music:
        REPEAT string bare_unsigned Music Alternative_music
        {
-               Music_sequence* alts = dynamic_cast <Music_sequence*> ($5);
-               if (alts && $3 < alts->length_i ())
-                       $5->origin ()->warning (_ ("More alternatives than repeats.  Junking excess alternatives."));
                Music *beg = $4;
                int times = $3;
+               SCM alts = gh_pair_p ($5) ? gh_car ($5) : SCM_EOL;
+               if (times < scm_ilength (alts)) {
+                 unsmob_music (gh_car (alts))
+                   ->origin ()->warning (
+                   _("More alternatives than repeats.  Junking excess alternatives."));
+                 alts = ly_truncate_list (times, alts);
+               }
 
                Repeated_music * r = new Repeated_music (SCM_EOL);
-
                if (beg)
                        {
-                       r-> set_mus_property ("body", beg->self_scm ());
-                       scm_unprotect_object (beg->self_scm ());
+                       r-> set_mus_property ("element", beg->self_scm ());
+                       scm_gc_unprotect_object (beg->self_scm ());
                        }
                r->set_mus_property ("repeat-count", gh_int2scm (times >? 1));
 
-               if (alts)
-                       {
-                       alts->truncate (times);
-                       r-> set_mus_property ("alternatives", alts->self_scm ());
-                       scm_unprotect_object (alts->self_scm ());  
-                       }
-               SCM func = scm_eval2 (ly_symbol2scm ("repeat-name-to-ctor"), SCM_EOL);
+               r-> set_mus_property ("elements",alts);
+               SCM func = scm_primitive_eval (ly_symbol2scm ("repeat-name-to-ctor"));
                SCM result = gh_call1 (func, $2);
 
                set_music_properties (r, result);
@@ -723,32 +736,26 @@ Repeated_music:
        }
        ;
 
-Music_sequence: '{' Music_list '}'     {
-               $$ = new Music_sequence (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($2));
-       }
-       ;
-
 Sequential_music:
        SEQUENTIAL '{' Music_list '}'           {
                $$ = new Sequential_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($3));
+               $$->set_mus_property ("elements", ly_car ($3));
        }
        | '{' Music_list '}'            {
                $$ = new Sequential_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($2));
+               $$->set_mus_property ("elements", ly_car ($2));
        }
        ;
 
 Simultaneous_music:
        SIMULTANEOUS '{' Music_list '}'{
                $$ = new Simultaneous_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($3));
+               $$->set_mus_property ("elements", ly_car ($3));
 
        }
        | '<' Music_list '>'    {
                $$ = new Simultaneous_music (SCM_EOL);
-               $$->set_mus_property ("elements", gh_car ($2));
+               $$->set_mus_property ("elements", ly_car ($2));
        }
        ;
 
@@ -787,7 +794,7 @@ Composite_music:
        CONTEXT STRING Music    {
                Context_specced_music *csm =  new Context_specced_music (SCM_EOL);
                csm->set_mus_property ("element", $3->self_scm ());
-               scm_unprotect_object ($3->self_scm ());
+               scm_gc_unprotect_object ($3->self_scm ());
 
                csm->set_mus_property ("context-type",$2);
                csm->set_mus_property ("context-id", ly_str02scm (""));
@@ -799,7 +806,7 @@ Composite_music:
                chm->set_mus_property ("element", $3->self_scm ());
                chm->set_mus_property ("iterator-ctor", Auto_change_iterator::constructor_cxx_function);
 
-               scm_unprotect_object ($3->self_scm ());
+               scm_gc_unprotect_object ($3->self_scm ());
                chm->set_mus_property ("what", $2); 
 
                $$ = chm;
@@ -821,14 +828,14 @@ Composite_music:
                if (stopm) {
                        stopm = stopm->clone ();
                        ms = gh_cons (stopm->self_scm (), ms);
-                       scm_unprotect_object (stopm->self_scm ());
+                       scm_gc_unprotect_object (stopm->self_scm ());
                }
                ms = gh_cons ($2->self_scm (), ms);
-               scm_unprotect_object ($2->self_scm());
+               scm_gc_unprotect_object ($2->self_scm());
                if (startm) {
                        startm = startm->clone ();
                        ms = gh_cons (startm->self_scm () , ms);
-                       scm_unprotect_object (startm->self_scm ());
+                       scm_gc_unprotect_object (startm->self_scm ());
                }
 
                Music* seq = new Sequential_music (SCM_EOL);
@@ -836,19 +843,17 @@ Composite_music:
 
                $$ = new Grace_music (SCM_EOL);
                $$->set_mus_property ("element", seq->self_scm ());
-               scm_unprotect_object (seq->self_scm ());
+               scm_gc_unprotect_object (seq->self_scm ());
 #else
                $$ = new Grace_music (SCM_EOL);
                $$->set_mus_property ("element", $2->self_scm ());
-               scm_unprotect_object ($2->self_scm ());
+               scm_gc_unprotect_object ($2->self_scm ());
 #endif
-
-
        }
        | CONTEXT string '=' string Music {
                Context_specced_music *csm =  new Context_specced_music (SCM_EOL);
                csm->set_mus_property ("element", $5->self_scm ());
-               scm_unprotect_object ($5->self_scm ());
+               scm_gc_unprotect_object ($5->self_scm ());
 
                csm->set_mus_property ("context-type", $2);
                csm->set_mus_property ("context-id", $4);
@@ -856,23 +861,23 @@ Composite_music:
                $$ = csm;
        }
        | TIMES {
-               THIS->remember_spot ();
+               THIS->push_spot ();
        }
        /* CONTINUED */ 
                fraction Music  
 
        {
-               int n = gh_scm2int (gh_car ($3)); int d = gh_scm2int (gh_cdr ($3));
+               int n = gh_scm2int (ly_car ($3)); int d = gh_scm2int (ly_cdr ($3));
                Music *mp = $4;
                $$ = new Time_scaled_music (SCM_EOL);
                $$->set_spot (THIS->pop_spot ());
 
 
                $$->set_mus_property ("element", mp->self_scm ());
-               scm_unprotect_object (mp->self_scm ());
+               scm_gc_unprotect_object (mp->self_scm ());
                $$->set_mus_property ("numerator", gh_int2scm (n));
                $$->set_mus_property ("denominator", gh_int2scm (d));
-               $$->compress (Moment (n,d));
+               $$->compress (Moment (Rational (n,d)));
 
        }
        | Repeated_music                { $$ = $1; }
@@ -885,7 +890,7 @@ Composite_music:
 
                p->transpose (pit);
                $$->set_mus_property ("element", p->self_scm ());
-               scm_unprotect_object (p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
        }
        | TRANSPOSE steno_tonic_pitch Music {
                $$ = new Transposed_music (SCM_EOL);
@@ -894,7 +899,7 @@ Composite_music:
 
                p->transpose (pit);
                $$->set_mus_property ("element", p->self_scm ());
-               scm_unprotect_object (p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
        
        }
        | APPLY embedded_scm Music  {
@@ -912,6 +917,16 @@ Composite_music:
                { $$ = $3;
                  THIS->lexer_p_->pop_state ();
                }
+       | FIGURES
+               { THIS->lexer_p_->push_figuredbass_state (); }
+       Music
+               {
+                 Music * chm = new Untransposable_music () ;
+                 chm->set_mus_property ("element", $3->self_scm ());
+                 $$ = chm;
+
+                 THIS->lexer_p_->pop_state ();
+       }
        | CHORDS
                { THIS->lexer_p_->push_chord_state (); }
        Music
@@ -941,7 +956,7 @@ relative_music:
                $$ = new Relative_octave_music (SCM_EOL);
 
                $$->set_mus_property ("element", p->self_scm ());
-               scm_unprotect_object (p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
 
                $$->set_mus_property ("last-pitch", p->to_relative_octave (pit).smobbed_copy ());
 
@@ -951,10 +966,9 @@ relative_music:
 re_rhythmed_music:
        ADDLYRICS Music Music {
          Lyric_combine_music * l = new Lyric_combine_music (SCM_EOL);
-         l->set_mus_property ("music", $2->self_scm ());
-         l->set_mus_property ("lyrics", $3->self_scm ());
-         scm_unprotect_object ($3->self_scm ());
-         scm_unprotect_object ($2->self_scm ());
+         l->set_mus_property ("elements", gh_list ($2->self_scm (), $3->self_scm (), SCM_UNDEFINED));
+         scm_gc_unprotect_object ($3->self_scm ());
+         scm_gc_unprotect_object ($2->self_scm ());
          $$ = l;
        }
        ;
@@ -964,12 +978,10 @@ part_combined_music:
                Part_combine_music * p = new Part_combine_music (SCM_EOL);
 
                p->set_mus_property ("what", $2);
-               p->set_mus_property ("one", $3->self_scm ());
-               p->set_mus_property ("two", $4->self_scm ());  
-
-               scm_unprotect_object ($3->self_scm ());
-               scm_unprotect_object ($4->self_scm ());  
+               p->set_mus_property ("elements", gh_list ($3->self_scm (),$4->self_scm (), SCM_UNDEFINED));  
 
+               scm_gc_unprotect_object ($3->self_scm ());
+               scm_gc_unprotect_object ($4->self_scm ());  
 
                $$ = p;
        }
@@ -995,7 +1007,7 @@ property_def:
                Context_specced_music *csm = new Context_specced_music (SCM_EOL);
 
                csm->set_mus_property ("element", t->self_scm ());
-               scm_unprotect_object (t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
 
                $$ = csm;
                $$->set_spot (THIS->here_input ());
@@ -1011,7 +1023,7 @@ property_def:
 
                Context_specced_music *csm = new Context_specced_music (SCM_EOL);
                csm->set_mus_property ("element", t->self_scm ());
-               scm_unprotect_object (t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
 
                $$ = csm;
                $$->set_spot (THIS->here_input ());
@@ -1028,7 +1040,7 @@ property_def:
                t->set_mus_property ("grob-value", $8);
                Context_specced_music *csm = new Context_specced_music (SCM_EOL);
                csm->set_mus_property ("element", t->self_scm ());
-               scm_unprotect_object (t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
                $$ = csm;
                $$->set_spot (THIS->here_input ());
 
@@ -1043,7 +1055,7 @@ property_def:
                t->set_mus_property ("grob-value", $8);
                Context_specced_music *csm = new Context_specced_music (SCM_EOL);
                csm->set_mus_property ("element", t->self_scm ());
-               scm_unprotect_object (t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
 
                $$ = csm;
                $$->set_spot (THIS->here_input ());
@@ -1059,7 +1071,7 @@ property_def:
 
                Context_specced_music *csm = new Context_specced_music (SCM_EOL);
                csm->set_mus_property ("element", t->self_scm ());
-               scm_unprotect_object (t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
 
                $$ = csm;
                $$->set_spot (THIS->here_input ());
@@ -1076,18 +1088,20 @@ scalar:
 
 
 request_chord:
-       pre_requests simple_element post_requests       {
-               Music_sequence *l = dynamic_cast<Music_sequence*> ($2);
-               if (l) {
-                       for (int i=0; i < $1->size (); i++)
-                               l->append_music ($1->elem (i));
-                       for (int i=0; i < $3->size (); i++)
-                               l->append_music ($3->elem (i));
-                       }
-               else
-                       programming_error ("Need Sequence to add music to");
-               $$ = $2;
+       pre_requests {
+               THIS->push_spot ();
+       } /*cont */ simple_element post_requests        {
+               Music_sequence *l = dynamic_cast<Music_sequence*> ($3);
                
+               $1->concat (*$4);
+               for (int i=0; i < $1->size (); i++) {
+                 Music * m = $1->elem (i);
+                 l->append_music (m);
+               }
+               $$ = $3;
+
+               delete $1;
+               delete $4;
        }
        | command_element
        ;
@@ -1099,12 +1113,22 @@ command_element:
                $$-> set_spot (THIS->here_input ());
                $1-> set_spot (THIS->here_input ());
        }
+       | E_BACKSLASH {
+               $$ = new Music (gh_list (gh_cons (ly_symbol2scm ("name"), ly_symbol2scm ("separator")), SCM_UNDEFINED));
+               $$->set_spot (THIS->here_input ());
+       }
+       | '|'      {
+
+               extern Music * get_barcheck();
+               $$ = get_barcheck ();
+               $$->set_spot (THIS->here_input ());
+       }
        | BAR STRING                    {
                Music *t = set_property_music (ly_symbol2scm ("whichBar"), $2);
 
                Context_specced_music *csm = new Context_specced_music (SCM_EOL);
                csm->set_mus_property ("element", t->self_scm ());
-               scm_unprotect_object (t->self_scm ());
+               scm_gc_unprotect_object (t->self_scm ());
 
                $$ = csm;
                $$->set_spot (THIS->here_input ());
@@ -1117,28 +1141,28 @@ command_element:
 
                Context_specced_music * sp = new Context_specced_music (SCM_EOL);
                sp->set_mus_property ("element", p->self_scm ());
-               scm_unprotect_object (p->self_scm ());
+               scm_gc_unprotect_object (p->self_scm ());
 
                $$ =sp ;
                sp-> set_mus_property ("context-type", ly_str02scm ( "Score"));
        }
        | CLEF STRING  {
-               SCM func = scm_eval2 (ly_symbol2scm ("clef-name-to-properties"), SCM_EOL);
+               SCM func = scm_primitive_eval (ly_symbol2scm ("clef-name-to-properties"));
                SCM result = gh_call1 (func, $2);
 
                SCM l = SCM_EOL;
-               for (SCM s = result ; gh_pair_p (s); s = gh_cdr (s)) {
+               for (SCM s = result ; gh_pair_p (s); s = ly_cdr (s)) {
                        Music * p = new Music (SCM_EOL);
-                       set_music_properties (p, gh_car (s));
+                       set_music_properties (p, ly_car (s));
                        l = gh_cons (p->self_scm (), l);
-                       scm_unprotect_object (p->self_scm ());
+                       scm_gc_unprotect_object (p->self_scm ());
                }
                Sequential_music * seq = new Sequential_music (SCM_EOL);
                seq->set_mus_property ("elements", l);
 
                Context_specced_music * sp = new Context_specced_music (SCM_EOL);
                sp->set_mus_property ("element", seq->self_scm ());
-               scm_unprotect_object (seq->self_scm ());
+               scm_gc_unprotect_object (seq->self_scm ());
 
                $$ =sp ;
                sp-> set_mus_property ("context-type", ly_str02scm ("Staff"));
@@ -1146,8 +1170,8 @@ command_element:
        | TIME_T fraction  {
                Music * p1 = set_property_music (ly_symbol2scm ( "timeSignatureFraction"), $2);
 
-  int l = gh_scm2int (gh_car ($2));
-  int o = gh_scm2int (gh_cdr ($2));
+  int l = gh_scm2int (ly_car ($2));
+  int o = gh_scm2int (ly_cdr ($2));
   
   Moment one_beat = Moment (1)/Moment (o);
   Moment len = Moment (l) * one_beat;
@@ -1156,7 +1180,7 @@ command_element:
                Music *p2 = set_property_music (ly_symbol2scm ("measureLength"), len.smobbed_copy ());
                Music *p3 = set_property_music (ly_symbol2scm ("beatLength"), one_beat.smobbed_copy ());
 
-               SCM list = gh_list (p1->self_scm (), p2->self_scm (), p3->self_scm(), SCM_UNDEFINED);
+               SCM list = scm_list_n (p1->self_scm (), p2->self_scm (), p3->self_scm(), SCM_UNDEFINED);
                Sequential_music *seq = new Sequential_music (SCM_EOL);
                seq->set_mus_property ("elements", list);
                
@@ -1166,10 +1190,10 @@ command_element:
 
                
 
-               scm_unprotect_object (p3->self_scm ());
-               scm_unprotect_object (p2->self_scm ());
-               scm_unprotect_object (p1->self_scm ());
-               scm_unprotect_object (seq->self_scm ());
+               scm_gc_unprotect_object (p3->self_scm ());
+               scm_gc_unprotect_object (p2->self_scm ());
+               scm_gc_unprotect_object (p1->self_scm ());
+               scm_gc_unprotect_object (seq->self_scm ());
 
                $$ = sp;
 
@@ -1193,9 +1217,6 @@ shorthand_command_req:
        | hyphen_req {
                $$ = $1;
        }
-       | '|'                           {
-               $$ = new Barcheck_req;
-       }
        | '~'   {
                $$ = new Tie_req;
        }
@@ -1204,6 +1225,9 @@ shorthand_command_req:
                b->set_span_dir (START);
                b->set_mus_property ("span-type", ly_str02scm ("beam"));
                $$ =b;
+
+
+               THIS->last_beam_start_ = b->self_scm ();
        }
        | ']'           {
                Span_req*b= new Span_req;
@@ -1214,9 +1238,11 @@ shorthand_command_req:
        | BREATHE {
                $$ = new Breathing_sign_req;
        }
+       | E_TILDE {
+               $$ = new Porrectus_req;
+       }
        ;
 
-
 verbose_command_req:
        COMMANDSPANREQUEST bare_int STRING { /*TODO: junkme */
                Span_req * sp_p = new Span_req;
@@ -1236,8 +1262,6 @@ verbose_command_req:
 
        }
        | PENALTY SCM_T         {
-
-               
                Break_req * b = new Break_req;
                SCM s = $2;
                if (!gh_number_p (s))
@@ -1264,7 +1288,7 @@ verbose_command_req:
                Key_change_req *key_p= new Key_change_req;
                
                key_p->set_mus_property ("pitch-alist", $3);
((Music* )key_p)->transpose (* unsmob_pitch ($2));
              ((Music*)key_p)->transpose (* unsmob_pitch ($2));
                $$ = key_p; 
        }
        ;
@@ -1319,7 +1343,8 @@ verbose_request:
                        TODO: junkme, use text-type == dynamic
                */
                Text_script_req *d = new Text_script_req;
-               d->set_mus_property ("text-type" , ly_symbol2scm ("dynamic"));
+               SCM dyn = ly_symbol2scm ("dynamic");
+               d->set_mus_property ("text-type" , dyn);
                d->set_mus_property ("text", $2);
                d->set_spot (THIS->here_input ());
                $$ = d;
@@ -1435,7 +1460,7 @@ explicit_pitch:
        }
        ;
 
-explicit_duration:
+verbose_duration:
        DURATION embedded_scm   {
                $$ = $2;
                if (!unsmob_duration ($2))
@@ -1534,9 +1559,9 @@ gen_text_def:
        | DIGIT {
                String ds = to_str ($1);
                Text_script_req* t = new Text_script_req;
-
+               SCM finger = ly_symbol2scm ("finger");
                t->set_mus_property ("text",  ly_str02scm (ds.ch_C ()));
-               t->set_mus_property ("text-type" , ly_symbol2scm ("finger"));
+               t->set_mus_property ("text-type" , finger);
                t->set_spot (THIS->here_input ());
                $$ = t;
        }
@@ -1563,7 +1588,6 @@ script_abbreviation:
        }
        ;
 
-
 script_dir:
        '_'     { $$ = DOWN; }
        | '^'   { $$ = UP; }
@@ -1589,20 +1613,27 @@ duration_length:
        multiplied_duration {
                $$ = $1;
        }
-       | explicit_duration {
+       | verbose_duration {
                $$ = $1;
        }       
        ;
 
 optional_notemode_duration:
        {
-               $$ = THIS->default_duration_.smobbed_copy ();
+               Duration dd = THIS->default_duration_;
+               $$ = dd.smobbed_copy ();
+
+               THIS->beam_check ($$);
        }
        | multiplied_duration   {
                $$ = $1;
+               THIS->default_duration_ = *unsmob_duration ($$);
+
+               THIS->beam_check ($$);
        }
-       | explicit_duration {
+       | verbose_duration {
                $$ = $1;
+               THIS->default_duration_ = *unsmob_duration ($$);
        }       
        ;
 
@@ -1615,15 +1646,11 @@ steno_duration:
                        l =  intlog2 ($1);
 
                $$ = Duration (l, $2).smobbed_copy ();
-
-               THIS->set_last_duration (unsmob_duration ($$));
        }
        | DURATION_IDENTIFIER dots      {
                Duration *d =unsmob_duration ($1);
                Duration k (d->duration_log (),d->dot_count () + $2);
                $$ = k.smobbed_copy ();
-
-               THIS->set_last_duration (unsmob_duration ($$));
        }
        ;
 
@@ -1638,7 +1665,7 @@ multiplied_duration:
                $$ = unsmob_duration ($$)->compressed ( $3) .smobbed_copy ();
        }
        | multiplied_duration '*' FRACTION {
-               Rational  m (gh_scm2int (gh_car ($3)), gh_scm2int (gh_cdr ($3)));
+               Rational  m (gh_scm2int (ly_car ($3)), gh_scm2int (ly_cdr ($3)));
 
                $$ = unsmob_duration ($$)->compressed (m).smobbed_copy ();
        }
@@ -1673,8 +1700,60 @@ tremolo_type:
        ;
 
 
+bass_number:
+       DIGIT
+       | UNSIGNED 
+       ;
+
+bass_mod:
+       '-'     { $$ = -1; }
+       | '+'   { $$ = 1; } 
+       | '!'   { $$ = 0; }
+       ;
+
+bass_figure:
+       bass_number  {
+               Pitch p ;
+               p .notename_i_ = $1 - 1;
+               p.normalise();
+               
+               Note_req * nr = new Note_req;
+               $$ = nr->self_scm ();
+               nr->set_mus_property ("pitch", p.smobbed_copy ());
+               scm_gc_unprotect_object ($$);
+       }
+       | bass_figure bass_mod {
+               if ($2) { 
+                       SCM sp = unsmob_music ($1)->get_mus_property ("pitch");
+                       unsmob_pitch (sp)->alteration_i_ += $2;
+               } else {
+                       unsmob_music ($1)->set_mus_property ("force-accidental", SCM_BOOL_T);
+               }
+       }
+       ;
+
+figure_list:
+       /**/            {
+               $$ = SCM_EOL;
+       }
+       | figure_list bass_figure {
+               $$ = gh_cons ($2, $1); 
+       }
+       ;
+
+figure_spec:
+       FIGURE_OPEN figure_list FIGURE_CLOSE {
+               Music * m = new Request_chord (SCM_EOL);
+               $2 = scm_reverse_x ($2, SCM_EOL);
+               m->set_mus_property ("elements",  $2);
+               $$ = m->self_scm ();
+       }
+       ;
+
 simple_element:
        pitch exclamations questions optional_notemode_duration {
+
+               Input i = THIS->pop_spot ();
                if (!THIS->lexer_p_->note_state_b ())
                        THIS->parser_error (_ ("Have to be in Note mode for notes"));
 
@@ -1689,42 +1768,48 @@ simple_element:
                        n->set_mus_property ("force-accidental", SCM_BOOL_T);
 
                Simultaneous_music*v = new Request_chord (SCM_EOL);
-               v->set_mus_property ("elements", gh_list (n->self_scm (), SCM_UNDEFINED));
+               v->set_mus_property ("elements", scm_list_n (n->self_scm (), SCM_UNDEFINED));
                
-/*
-FIXME: location is one off, since ptich & duration don't contain origin refs. 
-*/
-               v->set_spot (THIS->here_input ());
-               n->set_spot (THIS->here_input ());
-
+               v->set_spot (i);
+               n->set_spot (i);
                $$ = v;
        }
-       | RESTNAME optional_notemode_duration           {
-
-               SCM e = SCM_UNDEFINED;
-                 if (ly_scm2string ($1) =="s")
-                   { /* Space */
-                     Skip_req * skip_p = new Skip_req;
-                     skip_p->set_mus_property ("duration" ,$2);
-
-                     skip_p->set_spot (THIS->here_input ());
+       | figure_spec optional_notemode_duration {
+               Music * m = unsmob_music ($1);
+               Input i = THIS->pop_spot (); 
+               m->set_spot (i);
+               for (SCM s = m->get_mus_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
+                       {
+                               unsmob_music (ly_car (s))->set_mus_property ("duration", $2);
+                       }
+               $$ = m;
+       }       
+       | RESTNAME optional_notemode_duration           {
+
+               Input i = THIS->pop_spot ();
+               SCM e = SCM_UNDEFINED;
+               if (ly_scm2string ($1) =="s") {
+                       /* Space */
+                       Skip_req * skip_p = new Skip_req;
+                       skip_p->set_mus_property ("duration" ,$2);
+                       skip_p->set_spot (i);
                        e = skip_p->self_scm ();
-                   }
-                 else
-                   {
-                     Rest_req * rest_req_p = new Rest_req;
-                     rest_req_p->set_mus_property ("duration", $2);
-                     rest_req_p->set_spot (THIS->here_input ());
+                 }
+                 else {
+                       Rest_req * rest_req_p = new Rest_req;
+                       rest_req_p->set_mus_property ("duration", $2);
+                       rest_req_p->set_spot (i);
                        e = rest_req_p->self_scm ();
                    }
-                 Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
-               velt_p-> set_mus_property ("elements", gh_list (e,SCM_UNDEFINED));
-                 velt_p->set_spot (THIS->here_input ());
-
+               Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
+               velt_p-> set_mus_property ("elements", scm_list_n (e,SCM_UNDEFINED));
+               velt_p->set_spot (i);
 
-                 $$ = velt_p;
+               $$ = velt_p;
        }
        | MULTI_MEASURE_REST optional_notemode_duration         {
+               Input i = THIS->pop_spot ();
+
                Skip_req * sk = new Skip_req;
                sk->set_mus_property ("duration", $2);
                Span_req *sp1 = new Span_req;
@@ -1736,31 +1821,32 @@ FIXME: location is one off, since ptich & duration don't contain origin refs.
                sp2->set_mus_property ("span-type", r);
 
                Request_chord * rqc1 = new Request_chord (SCM_EOL);
-               rqc1->set_mus_property ("elements", gh_list (sp1->self_scm (), SCM_UNDEFINED));
+               rqc1->set_mus_property ("elements", scm_list_n (sp1->self_scm (), SCM_UNDEFINED));
                Request_chord * rqc2 = new Request_chord (SCM_EOL);
-               rqc2->set_mus_property ("elements", gh_list (sk->self_scm (), SCM_UNDEFINED));;
+               rqc2->set_mus_property ("elements", scm_list_n (sk->self_scm (), SCM_UNDEFINED));;
                Request_chord * rqc3 = new Request_chord (SCM_EOL);
-               rqc3->set_mus_property ("elements", gh_list (sp2->self_scm (), SCM_UNDEFINED));;
+               rqc3->set_mus_property ("elements", scm_list_n (sp2->self_scm (), SCM_UNDEFINED));;
 
-               SCM ms = gh_list (rqc1->self_scm (), rqc2->self_scm (), rqc3->self_scm (), SCM_UNDEFINED);
+               SCM ms = scm_list_n (rqc1->self_scm (), rqc2->self_scm (), rqc3->self_scm (), SCM_UNDEFINED);
 
                $$ = new Sequential_music (SCM_EOL);
                $$->set_mus_property ("elements", ms);
        }
        | STRING optional_notemode_duration     {
+               Input i = THIS->pop_spot ();
 
                Lyric_req* lreq_p = new Lyric_req;
                 lreq_p->set_mus_property ("text", $1);
                lreq_p->set_mus_property ("duration",$2);
-               lreq_p->set_spot (THIS->here_input ());
+               lreq_p->set_spot (i);
                Simultaneous_music* velt_p = new Request_chord (SCM_EOL);
-               velt_p->set_mus_property ("elements", gh_list (lreq_p->self_scm (), SCM_UNDEFINED));
-
+               velt_p->set_mus_property ("elements", scm_list_n (lreq_p->self_scm (), SCM_UNDEFINED));
 
                $$= velt_p;
-
        }
        | chord {
+               Input i = THIS->pop_spot ();
+
                if (!THIS->lexer_p_->chord_state_b ())
                        THIS->parser_error (_ ("Have to be in Chord mode for chords"));
                $$ = $1;
@@ -1825,10 +1911,11 @@ chord_step:
                $$ = gh_cons ($1, SCM_EOL);
        }
        | CHORDMODIFIER_PITCH {
-               $$ = gh_cons ($1, SCM_EOL);
+               $$ = gh_cons (unsmob_pitch ($1)->smobbed_copy (), SCM_EOL);
        }
        | CHORDMODIFIER_PITCH chord_note { /* Ugh. */
-               $$ = gh_list ($1, $2, SCM_UNDEFINED);
+               $$ = scm_list_n (unsmob_pitch ($1)->smobbed_copy (),
+                       $2, SCM_UNDEFINED);
        }
        ;
 
@@ -1959,7 +2046,7 @@ string:
                $$ = $1;
        }
        | string '+' string {
-               $$ = scm_string_append (scm_listify ($1, $3, SCM_UNDEFINED));
+               $$ = scm_string_append (scm_list_n ($1, $3, SCM_UNDEFINED));
        }
        ;
 
@@ -1996,3 +2083,24 @@ My_lily_parser::do_yyparse ()
 }
 
 
+/*
+Should make this optional?    It will also complain when you do
+
+       [s4]
+
+which is entirely legitimate.
+
+Or we can scrap it. Barchecks should detect wrong durations, and
+skipTypesetting speeds it up a lot.
+*/
+void
+My_lily_parser::beam_check (SCM dur)
+{
+  Duration *d = unsmob_duration (dur);
+  if (unsmob_music (last_beam_start_) && d->duration_log () <= 2)
+    {
+      Music * m = unsmob_music (last_beam_start_);
+      m->origin ()->warning (_("Suspect duration found following this beam"));
+    }
+  last_beam_start_ = SCM_EOL;
+}