]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/parser.yy
($(outdir)/%.pdf): add DVIPS_FLAGS. This will
[lilypond.git] / lily / parser.yy
index 2f9d9b37c232daa0163a66877b4a4e2be722c178..7cd980afc5d452346e771d56c97e192916205e6e 100644 (file)
@@ -5,7 +5,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
            Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
@@ -53,13 +53,12 @@ TODO:
 */
 
 #include <ctype.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <stdio.h>
 
 
 #include "scm-option.hh"
-#include "translator-def.hh"
+#include "context-def.hh"
 #include "lily-guile.hh"
 #include "misc.hh"
 #include "my-lily-lexer.hh"
@@ -75,7 +74,6 @@ TODO:
 #include "input.hh"
 #include "lilypond-input-version.hh"
 #include "scm-hash.hh"
-#include "auto-change-iterator.hh"
 #include "ly-modules.hh"
 #include "music-sequence.hh"
 #include "input-smob.hh"
@@ -83,10 +81,11 @@ TODO:
 #include "text-item.hh"
 #include "music-list.hh"
 
-
 #define MY_MAKE_MUSIC(x)  make_music_by_name (ly_symbol2scm (x))
 
-
+Music *property_op_to_music (SCM op);
+Music *context_spec_music (SCM type, SCM id, Music * m, SCM ops_);
+SCM get_next_unique_context ();
 
 #define YYERROR_VERBOSE 1
 
@@ -163,10 +162,11 @@ SCM
 make_chord_step (int step, int alter)
 {
        if (step == 7)
-               alter--;
+               alter += FLAT;
 
-       /* ugh: fucks up above 13 */
-       Pitch m(step > 7 ? 1 : 0,(step - 1) % 7, alter);
+       while(step < 0)
+               step += 7;
+       Pitch m((step -1) / 7 , (step - 1) % 7, alter);
        return m.smobbed_copy ();
 }
 
@@ -237,6 +237,7 @@ yylex (YYSTYPE *s,  void * v)
 
 %token ACCEPTS
 %token ADDLYRICS
+%token NEWADDLYRICS
 %token ALIAS
 %token ALTERNATIVE
 %token APPLY
@@ -245,6 +246,7 @@ yylex (YYSTYPE *s,  void * v)
 %token AUTOCHANGE
 %token BAR
 %token BREATHE
+%token CHANGE
 %token CHORDMODIFIERS  
 %token CHORDS
 %token LESSLESS
@@ -281,8 +283,6 @@ yylex (YYSTYPE *s,  void * v)
 %token PAPER
 %token PARTCOMBINE
 %token PARTIAL
-%token PITCHNAMES
-%token PROPERTY
 %token RELATIVE
 %token REMOVE
 %token REPEAT
@@ -301,7 +301,7 @@ yylex (YYSTYPE *s,  void * v)
 %token TRANSPOSE
 %token TYPE
 %token UNSET
-
+%token WITH
 
 /* escaped */
 %token E_CHAR E_EXCLAMATION E_SMALLER E_BIGGER E_OPEN E_CLOSE
@@ -314,6 +314,8 @@ yylex (YYSTYPE *s,  void * v)
 %type <i>      exclamations questions dots optional_rest
 %type <i>       bass_mod
 %type <scm>    grace_head
+%type <scm>    oct_check
+%type <scm>    context_mod_list
 %type <scm>    lyric_element
 %type <scm>    bass_number br_bass_figure bass_figure figure_list figure_spec
 %token <i>     DIGIT
@@ -323,10 +325,9 @@ yylex (YYSTYPE *s,  void * v)
 %token <scm>   DURATION_IDENTIFIER
 %token <scm>    FRACTION
 %token <id>    IDENTIFIER
-%token <scm>   CHORDNAMES
-
-%token <scm> CHORD_MODIFIER
-
+%token DRUMS
+%token <scm>   DRUM_PITCH
+%token <scm>   CHORD_MODIFIER
 %token <scm>   SCORE_IDENTIFIER
 %token <scm>   MUSIC_OUTPUT_DEF_IDENTIFIER
 %token <scm>   NUMBER_IDENTIFIER
@@ -341,6 +342,7 @@ yylex (YYSTYPE *s,  void * v)
 
 %token MARKUP
 %token <scm> MARKUP_HEAD_MARKUP0
+%token <scm> MARKUP_HEAD_EMPTY
 %token <scm> MARKUP_HEAD_MARKUP0_MARKUP1
 %token <scm> MARKUP_HEAD_SCM0
 %token <scm> MARKUP_HEAD_SCM0_MARKUP1
@@ -377,22 +379,20 @@ yylex (YYSTYPE *s,  void * v)
 
 %type <scm>  embedded_scm scalar
 %type <music>  Music Sequential_music Simultaneous_music 
-%type <music>  relative_music re_rhythmed_music part_combined_music
-%type <music>  property_def translator_change  simple_property_def
-%type <scm> Music_list
-%type <outputdef>  music_output_def_body
-%type <music> shorthand_command_req
+%type <music>  relative_music re_rhythmed_music 
+%type <music>  music_property_def context_change
+%type <scm> context_prop_spec 
+%type <scm> Music_list 
+%type <scm> property_operation context_mod translator_mod optional_context_mod
+%type <outputdef>  music_output_def_body music_output_def_head
 %type <music>  post_event tagged_post_event
-%type <music> command_req verbose_command_req
-%type <music>  extender_req
-%type <music> hyphen_req
+%type <music> command_req 
 %type <music> string_number_event
 %type <scm>    string bare_number number_expression number_term number_factor 
 %type <score>  score_block score_body
 
 %type <scm>    translator_spec_block translator_spec_body
 %type <music>  tempo_event
-%type <scm> notenames_body notenames_block chordmodifiers_block
 %type <scm>    script_abbreviation
 
 
@@ -418,23 +418,49 @@ lilypond: /* empty */
        ;
 
 toplevel_expression:
-       notenames_block                 {
-               THIS->lexer_->pitchname_tab_ =  $1;
-       }
-       | chordmodifiers_block                  {
-               THIS->lexer_->chordmodifier_tab_  = $1;
-       }
-       | lilypond_header {
+       lilypond_header {
                THIS->input_file_->header_ = $1;
        }
        | score_block {
-               THIS->input_file_->scores_.push ($1);
+               Score * sc = $1;
+
+               SCM head = ly_module_p (sc->header_) ? sc->header_ : THIS->input_file_->header_.to_SCM ();
+
+               Path p = split_path (THIS->output_basename_);
+               int *c =  &THIS->input_file_->score_count_;
+               if (*c)
+                       {
+                       p.base += "-" + to_string (*c);
+                       }
+
+               (*c)++;
+               SCM outname = scm_makfrom0str (p.to_string ().to_str0());
+
+               for (int i=0; i < sc->defs_.size (); i++)
+                       default_rendering (sc->music_, sc->defs_[i]->self_scm(),head, outname);
+
+               if (sc->defs_.is_empty ())
+               {
+                  Music_output_def *id =
+                       unsmob_music_output_def (THIS->lexer_->lookup_identifier
+                               ("$defaultpaper"));
+
+                  id = id ? id->clone () : new Paper_def;
+       
+                  default_rendering (sc->music_, id->self_scm(), head, outname);
+                                               
+                  scm_gc_unprotect_object (id->self_scm ());
+               }
+               scm_gc_unprotect_object (sc->self_scm());
        }
        | output_def {
+               SCM id = SCM_EOL;
                if (dynamic_cast<Paper_def*> ($1))
-                       THIS->lexer_->set_identifier (scm_makfrom0str ("$defaultpaper"), $1->self_scm ());
+                       id = scm_makfrom0str ("$defaultpaper");
                else if (dynamic_cast<Midi_def*> ($1))
-                       THIS->lexer_->set_identifier (scm_makfrom0str ("$defaultmidi"), $1->self_scm ());
+                       id = scm_makfrom0str ("$defaultmidi");
+               THIS->lexer_->set_identifier (id,   $1->self_scm ());
+               scm_gc_unprotect_object ($1->self_scm ());
        }
        ;
 
@@ -444,26 +470,7 @@ embedded_scm:
        ;
 
 
-chordmodifiers_block:
-       CHORDMODIFIERS notenames_body   {  $$ = $2; }
-       ;
-
-notenames_block:
-       PITCHNAMES notenames_body   {  $$ = $2; }
-       ;
 
-notenames_body:
-       embedded_scm    {
-         int i = scm_ilength ($1);
-
-         SCM tab = scm_make_vector (gh_int2scm (i), SCM_EOL);
-         for (SCM s = $1; gh_pair_p (s); s = ly_cdr (s)) {
-               SCM pt = ly_cdar (s);
-               scm_hashq_set_x (tab, ly_caar (s), pt);
-         }
-         $$ = tab;
-       }
-       ;
 
 lilypond_header_body:
        {
@@ -515,7 +522,6 @@ all objects can be unprotected as soon as they're here.
        ;
 
 
-
 identifier_init:
        score_block {
                $$ = $1->self_scm ();
@@ -558,61 +564,27 @@ translator_spec_block:
        ;
 
 translator_spec_body:
-       TRANSLATOR_IDENTIFIER   {
-               $$ = $1;
-               unsmob_translator_def ($$)-> set_spot (THIS->here_input ());
-       }
-       | TYPE STRING   {
-               $$ = Translator_def::make_scm ();
-               Translator_def*td =  unsmob_translator_def ($$);
-               td->translator_group_type_ = $2;
-               td->set_spot (THIS->here_input ());
-       }
-       | translator_spec_body DESCRIPTION string  {
-               unsmob_translator_def ($$)->description_ = $3;
-       }
-       | translator_spec_body STRING '=' embedded_scm                  {
-               unsmob_translator_def ($$)->add_property_assign ($2, $4);
-       }
-       | translator_spec_body STRING OVERRIDE embedded_scm '=' embedded_scm {
-               unsmob_translator_def ($$)
-                       ->add_push_property (scm_string_to_symbol ($2), $4, $6);
-       }
-       | translator_spec_body STRING SET embedded_scm '=' embedded_scm {
-               unsmob_translator_def ($$)
-                       ->add_push_property (scm_string_to_symbol ($2), $4, $6);
-       }
-       | translator_spec_body STRING REVERT embedded_scm  {
-         unsmob_translator_def ($$)->add_pop_property (
-               scm_string_to_symbol ($2), $4);
-       }
-       | translator_spec_body NAME STRING  {
-               unsmob_translator_def ($$)->type_name_ = scm_string_to_symbol ($3);
-       }
-       | translator_spec_body CONSISTS STRING  {
-               unsmob_translator_def ($$)->add_element ($3);
+       /**/ {
+               $$ = Context_def::make_scm ();
+               unsmob_context_def ($$)->set_spot (THIS->here_input ());
        }
-       | translator_spec_body ALIAS STRING  {
-               Translator_def*td = unsmob_translator_def ($$);
-               td->type_aliases_ = scm_cons (scm_string_to_symbol ($3), td->type_aliases_);
+       | TRANSLATOR_IDENTIFIER {
+               $$ = $1;
+               unsmob_context_def ($$)->set_spot (THIS->here_input ());
        }
        | 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);
-       }
-       | translator_spec_body ACCEPTS STRING  {
-               unsmob_translator_def ($$)->set_acceptor (scm_string_to_symbol ($3), true);
-       }
-       | translator_spec_body DENIES STRING  {
-               unsmob_translator_def ($$)->set_acceptor (scm_string_to_symbol ($3), false);
+               Context_def*td = unsmob_context_def($$);
+
+               for (SCM p = $3; gh_pair_p (p); p = ly_cdr (p)) {
+                       SCM tag = gh_caar (p);
+
+                       /* TODO: should make new tag "grob-definition" ? */
+                       td->add_context_mod (scm_list_n (ly_symbol2scm ("assign"),
+                                                       tag, gh_cons (ly_cdar (p), SCM_EOL), SCM_UNDEFINED));
+               }
        }
-       | translator_spec_body REMOVE STRING  {
-               unsmob_translator_def ($$)->remove_element ($3);
+       | translator_spec_body context_mod {
+               unsmob_context_def ($$)->add_context_mod ($2);          
        }
        ;
 
@@ -626,12 +598,7 @@ score_block:
        /*cont*/ '{' score_body '}'     {
                THIS->pop_spot ();
                $$ = $4;
-               if (!$$->defs_.size ())
-               {
-                 Music_output_def *id =
-                       unsmob_music_output_def (THIS->lexer_->lookup_identifier ("$defaultpaper"));
-                 $$->add_output (id ? id->clone () :  new Paper_def );
-               }
+
        }
        ;
 
@@ -653,14 +620,15 @@ score_body:
 
        }
        | SCORE_IDENTIFIER {
-               $$ = unsmob_score ($1);
+               $$ = new Score ( *unsmob_score ($1));
                $$->set_spot (THIS->here_input ());
        }
        | score_body lilypond_header    {
                $$->header_ = $2;
        }
        | score_body output_def {
-               $$->add_output ($2);
+               $$->defs_.push ($2);
+               scm_gc_unprotect_object ($2->self_scm ());
        }
        | score_body error {
 
@@ -678,8 +646,8 @@ output_def:
        }
        ;
 
-music_output_def_body:
-       MIDI '{'    {
+music_output_def_head:
+       MIDI    {
                Music_output_def *id = unsmob_music_output_def (THIS->lexer_->lookup_identifier ("$defaultmidi"));
 
 
@@ -692,7 +660,7 @@ music_output_def_body:
                $$ = p;
                THIS->lexer_->add_scope (p->scope_);
        }
-       | PAPER '{'     {
+       | PAPER         {
                Music_output_def *id = unsmob_music_output_def (THIS->lexer_->lookup_identifier ("$defaultpaper"));
                  Paper_def *p = 0;
                if (id)
@@ -703,16 +671,18 @@ music_output_def_body:
                THIS->lexer_->add_scope (p->scope_);
                $$ = p;
        }
-       | PAPER '{' MUSIC_OUTPUT_DEF_IDENTIFIER         {
-               Music_output_def * o =  unsmob_music_output_def ($3);
-               $$ =o;
+       ;
 
-               THIS->lexer_->add_scope (o->scope_);
+
+music_output_def_body:
+       music_output_def_head '{' { 
+               
        }
-       | MIDI '{' MUSIC_OUTPUT_DEF_IDENTIFIER  {
+       | music_output_def_head '{' MUSIC_OUTPUT_DEF_IDENTIFIER         {
+               scm_gc_unprotect_object ($1->self_scm ());
                Music_output_def * o =  unsmob_music_output_def ($3);
                $$ = o;
-
+               THIS->lexer_->remove_scope ();
                THIS->lexer_->add_scope (o->scope_);
        }
        | music_output_def_body assignment  {
@@ -731,6 +701,7 @@ music_output_def_body:
                Midi_def * md = dynamic_cast<Midi_def*> ($$);
                if (md)
                        md->set_tempo (d->get_length (), m);
+               scm_gc_unprotect_object ($2->self_scm ());
        }
        | music_output_def_body error {
 
@@ -891,40 +862,53 @@ Simple_music:
        | MUSIC_IDENTIFIER {
                $$ = unsmob_music ($1);
        }
-       | property_def
-       | translator_change
+       | music_property_def
+       | context_change
        ;
 
 
+optional_context_mod:
+       /**/ { $$ = SCM_EOL; }
+       | WITH '{' context_mod_list '}'  { $$ = $3; }
+       ;
+
 grace_head:
        GRACE  { $$ = scm_makfrom0str ("Grace"); } 
        | ACCIACCATURA { $$ = scm_makfrom0str ("Acciaccatura"); }
        | APPOGGIATURA { $$ = scm_makfrom0str ("Appoggiatura"); }
        ;
-       
-
-Composite_music:
-       CONTEXT STRING Music    {
-               Music*csm =MY_MAKE_MUSIC("ContextSpeccedMusic");
 
-               csm->set_mus_property ("element", $3->self_scm ());
-               scm_gc_unprotect_object ($3->self_scm ());
-
-               csm->set_mus_property ("context-type", scm_string_to_symbol ($2));
-               csm->set_mus_property ("context-id", scm_makfrom0str (""));
+context_mod_list:
+       /* */  { $$ = SCM_EOL; }
+       | context_mod_list context_mod  {
+                $$ = gh_cons ($2, $1);
+       }
+       ;
 
-               $$ = csm;
+Composite_music:
+       AUTOCHANGE Music        {
+               static SCM proc ;
+               if (!proc)
+                       proc = scm_c_eval_string ("make-autochange-music");
+       
+               SCM res = scm_call_1 (proc,  $2->self_scm ());
+               scm_gc_unprotect_object ($2->self_scm ());
+               $$ = unsmob_music (res);
+               scm_gc_protect_object (res);
+               $$->set_spot (THIS->here_input());
        }
-       | AUTOCHANGE STRING Music       {
-       Music*chm = MY_MAKE_MUSIC("AutoChangeMusic");
-               chm->set_mus_property ("element", $3->self_scm ());
-               chm->set_mus_property ("iterator-ctor", Auto_change_iterator::constructor_proc);
+       | PARTCOMBINE Music Music {
+               static SCM proc;
+               if (!proc)
+                       proc = scm_c_eval_string ("make-part-combine-music");
 
+               SCM res = scm_call_1 (proc, gh_list ($2->self_scm (),
+                       $3->self_scm (), SCM_UNDEFINED));  
                scm_gc_unprotect_object ($3->self_scm ());
-               chm->set_mus_property ("what", scm_string_to_symbol ($2));
-
-               $$ = chm;
-               chm->set_spot (*$3->origin ());
+               scm_gc_unprotect_object ($2->self_scm ());
+               $$ = unsmob_music (res);
+               scm_gc_protect_object (res);
+               $$->set_spot (THIS->here_input());
        }
        | grace_head Music {
 #if 1
@@ -963,7 +947,6 @@ basic music objects too, since the meaning is different.
                        scm_gc_unprotect_object (startm->self_scm ());
                }
 
-       
                Music* seq = MY_MAKE_MUSIC("SequentialMusic");
                seq->set_mus_property ("elements", ms);
 
@@ -977,34 +960,18 @@ basic music objects too, since the meaning is different.
                scm_gc_unprotect_object ($2->self_scm ());
 #endif
        }
-       | CONTEXT string '=' string Music {
-               Music * csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-
-               csm->set_mus_property ("element", $5->self_scm ());
-               scm_gc_unprotect_object ($5->self_scm ());
+       | CONTEXT string '=' string optional_context_mod Music {
+               $$ = context_spec_music ($2, $4, $6, $5);
 
-               csm->set_mus_property ("context-type", scm_string_to_symbol ($2));
-               csm->set_mus_property ("context-id", $4);
-
-               $$ = csm;
        }
-       | NEWCONTEXT string Music {
-               static int new_context_count;
-
-               Music * csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-
-               csm->set_mus_property ("element", $3->self_scm ());
-               scm_gc_unprotect_object ($3->self_scm ());
-
-               csm->set_mus_property ("context-type", scm_string_to_symbol ($2));
-
-               char s[1024];
-               snprintf (s, 1024, "uniqueContext%d", new_context_count ++);
-               
-               SCM new_id = scm_makfrom0str (s);
-               csm->set_mus_property ("context-id", new_id);
-               $$ = csm;
+       | CONTEXT STRING optional_context_mod Music {
+               $$ = context_spec_music ($2, SCM_UNDEFINED, $4, $3);
+       }
+       | NEWCONTEXT string optional_context_mod Music {
+               $$ = context_spec_music ($2, get_next_unique_context (),
+                                        $4, $3);
        }
+
        | TIMES {
                THIS->push_spot ();
        }
@@ -1056,7 +1023,19 @@ basic music objects too, since the meaning is different.
                        }
        }
        | NOTES
-               { THIS->lexer_->push_note_state (); }
+               {
+               SCM nn = THIS->lexer_->lookup_identifier ("pitchnames");
+               THIS->lexer_->push_note_state (alist_to_hashq (nn));
+       }
+       Music
+               { $$ = $3;
+                 THIS->lexer_->pop_state ();
+               }
+       | DRUMS
+               {
+               SCM nn = THIS->lexer_->lookup_identifier ("drumPitchNames");
+               THIS->lexer_->push_note_state (alist_to_hashq (nn));
+       }
        Music
                { $$ = $3;
                  THIS->lexer_->pop_state ();
@@ -1072,10 +1051,13 @@ basic music objects too, since the meaning is different.
 
                  THIS->lexer_->pop_state ();
        }
-       | CHORDS
-               { THIS->lexer_->push_chord_state (); }
-       Music
-               {
+       | CHORDS {
+               SCM nn = THIS->lexer_->lookup_identifier ("chordmodifiers");
+               THIS->lexer_->chordmodifier_tab_ = alist_to_hashq (nn);
+               nn = THIS->lexer_->lookup_identifier ("pitchnames");
+               THIS->lexer_->push_chord_state (alist_to_hashq (nn));
+
+       } Music {
                  Music * chm = MY_MAKE_MUSIC("UnrelativableMusic");
                  chm->set_mus_property ("element", $3->self_scm ());
                  scm_gc_unprotect_object ($3->self_scm());
@@ -1092,7 +1074,6 @@ basic music objects too, since the meaning is different.
        }
        | relative_music        { $$ = $1; }
        | re_rhythmed_music     { $$ = $1; } 
-       | part_combined_music   { $$ = $1; }
        | TAG embedded_scm Music {
                tag_music ($3, $2, THIS->here_input ());
                $$ = $3;
@@ -1123,23 +1104,17 @@ re_rhythmed_music:
          scm_gc_unprotect_object ($2->self_scm ());
          $$ = l;
        }
-       ;
-
-part_combined_music:
-       PARTCOMBINE STRING Music Music {
-               Music * p= MY_MAKE_MUSIC("PartCombineMusic");
-               p->set_mus_property ("what", scm_string_to_symbol ($2));
-               p->set_mus_property ("elements", gh_list ($3->self_scm (),$4->self_scm (), SCM_UNDEFINED));  
-
-               scm_gc_unprotect_object ($3->self_scm ());
-               scm_gc_unprotect_object ($4->self_scm ());  
-
-               $$ = p;
+       | NEWADDLYRICS string Music {
+         Music*l =MY_MAKE_MUSIC("NewLyricCombineMusic");
+         l->set_mus_property ("element", $3->self_scm ());
+         scm_gc_unprotect_object ($3->self_scm ());
+         $$ = l;
+         l->set_mus_property ("associated-context", $2);
        }
        ;
 
-translator_change:
-       TRANSLATOR STRING '=' STRING  {
+context_change:
+       CHANGE STRING '=' STRING  {
                Music*t= MY_MAKE_MUSIC("TranslatorChange");
                t-> set_mus_property ("change-to-type", scm_string_to_symbol ($2));
                t-> set_mus_property ("change-to-id", $4);
@@ -1149,118 +1124,96 @@ translator_change:
        }
        ;
 
-property_def:
-       simple_property_def
-       | ONCE simple_property_def {
-               $$ = $2;
-               SCM e = $2->get_mus_property ("element");
-               unsmob_music (e)->set_mus_property ("once", SCM_BOOL_T);
+property_operation:
+       STRING '='  scalar {
+               $$ = scm_list_n (ly_symbol2scm ("assign"),
+                       scm_string_to_symbol ($1), $3, SCM_UNDEFINED);
+       }
+       | STRING UNSET {
+               $$ = scm_list_n (ly_symbol2scm ("unset"),
+                       scm_string_to_symbol ($1), SCM_UNDEFINED);
+       }
+       | STRING SET embedded_scm '=' embedded_scm {
+               $$ = scm_list_n (ly_symbol2scm ("poppush"),
+                       scm_string_to_symbol ($1), $3, $5, SCM_UNDEFINED);
+       }
+       | STRING OVERRIDE embedded_scm '=' embedded_scm {
+               $$ = scm_list_n (ly_symbol2scm ("push"),
+                       scm_string_to_symbol ($1), $3, $5, SCM_UNDEFINED);
+       }
+       | STRING REVERT embedded_scm {
+               $$ = scm_list_n (ly_symbol2scm ("pop"),
+                       scm_string_to_symbol ($1), $3, SCM_UNDEFINED);
        }
        ;
 
-simple_property_def:
-       PROPERTY STRING '.' STRING '='  scalar {
-               Music *t = set_property_music (scm_string_to_symbol ($4), $6);
-               Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
+translator_mod:
+       CONSISTSEND { $$ = ly_symbol2scm ("consists-end"); }
+       | CONSISTS { $$ = ly_symbol2scm ("consists"); }
+       | REMOVE { $$ = ly_symbol2scm ("remove"); }
 
-               csm->set_mus_property ("element", t->self_scm ());
-               scm_gc_unprotect_object (t->self_scm ());
+       | ACCEPTS { $$ = ly_symbol2scm ("accepts"); }
+       | DENIES { $$ = ly_symbol2scm ("denies"); }
 
-               $$ = csm;
-               $$->set_spot (THIS->here_input ());
+       | ALIAS { $$ = ly_symbol2scm ("alias"); }
+       | TYPE { $$ = ly_symbol2scm ("translator-type"); }
+       | DESCRIPTION { $$ = ly_symbol2scm ("description"); }
+       | NAME { $$ = ly_symbol2scm ("context-name"); }
+       ;
 
-               csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
+context_mod:
+       property_operation { $$ = $1; }
+       | translator_mod STRING {
+               $$ = scm_list_n ($1, $2, SCM_UNDEFINED);
        }
-       | PROPERTY STRING '.' STRING UNSET {
-               
-               Music *t = MY_MAKE_MUSIC("PropertyUnset");
-               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
-
-               Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-               csm->set_mus_property ("element", t->self_scm ());
-               scm_gc_unprotect_object (t->self_scm ());
-
-               $$ = csm;
-               $$->set_spot (THIS->here_input ());
+       ;
 
-               csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
+context_prop_spec:
+       STRING  {
+               $$ = scm_list_n (ly_symbol2scm ("Bottom"), scm_string_to_symbol ($1), SCM_UNDEFINED);
        }
-       | PROPERTY STRING '.' STRING SET embedded_scm '=' embedded_scm {
-               bool autobeam
-                 = gh_equal_p ($4, scm_makfrom0str ("autoBeamSettings"));
-               bool itc = internal_type_checking_global_b;
-               Music *t = MY_MAKE_MUSIC("OverrideProperty");
-               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
-               t->set_mus_property ("pop-first", SCM_BOOL_T);
-               if (autobeam)
-                       internal_type_checking_global_b = false;
-               t->set_mus_property ("grob-property", $6);
-               if (autobeam)
-                       internal_type_checking_global_b = itc;
-               t->set_mus_property ("grob-value", $8);
-
-               Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-               csm->set_mus_property ("element", t->self_scm ());
-               scm_gc_unprotect_object (t->self_scm ());
-               $$ = csm;
-               $$->set_spot (THIS->here_input ());
-
-               csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
+       | STRING '.' STRING {
+               $$ = scm_list_n (scm_string_to_symbol ($1), scm_string_to_symbol ($3), SCM_UNDEFINED);
        }
-       | PROPERTY STRING '.' STRING OVERRIDE
-               embedded_scm '=' embedded_scm
-       {
-               /*
-                       UGH UGH UGH UGH.
-               */
-               bool autobeam
-                 = gh_equal_p ($4, scm_makfrom0str ("autoBeamSettings"));
-               bool itc = internal_type_checking_global_b;
-
-               Music *t = MY_MAKE_MUSIC("OverrideProperty");
-               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
-               if (autobeam)
-                       internal_type_checking_global_b = false;
-               t->set_mus_property ("grob-property", $6);
-               t->set_mus_property ("grob-value", $8);
-               if (autobeam)
-                       internal_type_checking_global_b = itc;
-
-               Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-               csm->set_mus_property ("element", t->self_scm ());
-               scm_gc_unprotect_object (t->self_scm ());
-
-               $$ = csm;
-               $$->set_spot (THIS->here_input ());
-
-               csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
+       ;
 
+music_property_def:
+       OVERRIDE context_prop_spec embedded_scm '=' scalar {
+               $$ = property_op_to_music (scm_list_n (
+                       ly_symbol2scm ("poppush"),
+                       gh_cadr ($2),
+                       $3, $5, SCM_UNDEFINED));
+               $$= context_spec_music (gh_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
        }
-       | PROPERTY STRING '.' STRING REVERT embedded_scm {
-               Music *t = MY_MAKE_MUSIC("RevertProperty");
-               bool autobeam
-                 = gh_equal_p ($4, scm_makfrom0str ("autoBeamSettings"));
-               bool itc = internal_type_checking_global_b;
-
-               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
-               if (autobeam)
-                       internal_type_checking_global_b = false;
-               t->set_mus_property ("grob-property", $6);
-               if (autobeam)
-                       internal_type_checking_global_b = itc;
-       
-               Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-               csm->set_mus_property ("element", t->self_scm ());
-               scm_gc_unprotect_object (t->self_scm ());
-
-               $$ = csm;
-               $$->set_spot (THIS->here_input ());
+       | SET context_prop_spec '=' scalar {
+               $$ = property_op_to_music (scm_list_n (
+                       ly_symbol2scm ("assign"),
+                       gh_cadr ($2),
+                       $4, SCM_UNDEFINED));
+               $$= context_spec_music (gh_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
+       }
+       | REVERT context_prop_spec embedded_scm {
+               $$ = property_op_to_music (scm_list_n (
+                       ly_symbol2scm ("pop"),
+                       gh_cadr ($2),
+                       $3, SCM_UNDEFINED));
 
-               csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
+               $$= context_spec_music (gh_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
+       }
+       | UNSET context_prop_spec {
+               $$ = property_op_to_music (scm_list_n (
+                       ly_symbol2scm ("unset"),
+                       gh_cadr ($2)));
+               $$= context_spec_music (gh_car ($2), SCM_UNDEFINED, $$, SCM_EOL);
+       }
+       | ONCE music_property_def {
+               $$ = $2;
+               $$->set_mus_property ("once", SCM_BOOL_T);
        }
        ;
 
 
+
 scalar:
         string          { $$ = $1; }
         | bare_int      { $$ = gh_int2scm ($1); }
@@ -1269,8 +1222,6 @@ scalar:
        | DIGIT { $$ = gh_int2scm ($1); }
         ;
 
-
-
 /*
 This is a trick:
 
@@ -1363,9 +1314,22 @@ chord_body_element:
                if ($2 % 2 || $3 % 2)
                        n->set_mus_property ("force-accidental", SCM_BOOL_T);
 
-               SCM arts = scm_reverse_x ($4, SCM_EOL);
-               n->set_mus_property ("articulations", arts);
+               if (gh_pair_p ($4)) {
+                       SCM arts = scm_reverse_x ($4, SCM_EOL);
+                       n->set_mus_property ("articulations", arts);
+               }
+               $$ = n;
+       }
+       | DRUM_PITCH post_events {
+               Music *n =  MY_MAKE_MUSIC("NoteEvent");
+               n->set_mus_property ("duration" ,$2);
+               n->set_mus_property ("drum-type" , $1);
+               n->set_spot (THIS->here_input());
 
+               if (gh_pair_p ($2)) {
+                       SCM arts = scm_reverse_x ($2, SCM_EOL);
+                       n->set_mus_property ("articulations", arts);
+               }
                $$ = n;
        }
        ;
@@ -1379,6 +1343,12 @@ command_element:
                $$-> set_spot (THIS->here_input ());
                $1-> set_spot (THIS->here_input ());
        }
+       | SKIP duration_length {
+               Music * skip = MY_MAKE_MUSIC("SkipMusic");
+               skip->set_mus_property ("duration", $2);
+
+               $$ = skip;
+       }
        | OCTAVE { THIS->push_spot (); }
          pitch {
                Music *l = MY_MAKE_MUSIC("RelativeOctaveCheck");
@@ -1456,44 +1426,28 @@ command_element:
                scm_gc_protect_object (result);
                $$ = unsmob_music (result);
        }
-       ;
+       | MARK scalar {
+               static SCM proc;
+               if (!proc)
+                       proc = scm_c_eval_string ("make-mark-set");
 
-command_req:
-       shorthand_command_req   { $$ = $1; }
-       | verbose_command_req   { $$ = $1; }
+               SCM result = scm_call_1 (proc, $2);
+               scm_gc_protect_object (result);
+               $$ = unsmob_music (result);
+       }
        ;
 
-shorthand_command_req:
-       extender_req {
-               $$ = $1;
-       }
-       | hyphen_req {
-               $$ = $1;
-       }
-       | BREATHE {
+command_req:
+       BREATHE {
                $$ = MY_MAKE_MUSIC("BreathingSignEvent");
        }
        | E_TILDE {
                $$ = MY_MAKE_MUSIC("PesOrFlexaEvent");
        }
-       ;
-
-verbose_command_req:
-       MARK DEFAULT  {
+       | MARK DEFAULT  {
                Music * m = MY_MAKE_MUSIC("MarkEvent");
                $$ = m;
        }
-       | MARK scalar {
-               Music *m = MY_MAKE_MUSIC("MarkEvent");
-               m->set_mus_property ("label", $2);
-               $$ = m;
-       }
-       | SKIP duration_length {
-               Music * skip = MY_MAKE_MUSIC("SkipEvent");
-               skip->set_mus_property ("duration", $2);
-
-               $$ = skip;
-       }
        | tempo_event {
                $$ = $1;
        }
@@ -1545,6 +1499,16 @@ post_event:
        direction_less_event {
                $$ = $1;
        }
+       | HYPHEN {
+               if (!THIS->lexer_->lyric_state_b ())
+                       THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
+               $$ = MY_MAKE_MUSIC("HyphenEvent");
+       }
+       | EXTENDER {
+               if (!THIS->lexer_->lyric_state_b ())
+                       THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
+               $$ = MY_MAKE_MUSIC("ExtenderEvent");
+       }
        | script_dir direction_reqd_event {
                if ($1)
                        $2->set_mus_property ("direction", gh_int2scm ($1));
@@ -1599,11 +1563,13 @@ configurable, i.e.
        }
        | close_event {
                $$ = $1;
-               dynamic_cast<Music *> ($$)->set_mus_property ("span-direction", gh_int2scm (START));
+               dynamic_cast<Music *> ($$)->set_mus_property ("span-direction",
+                       gh_int2scm (START));
        }
        | open_event {
                $$ = $1;
-               dynamic_cast<Music *> ($$)->set_mus_property ("span-direction", gh_int2scm (STOP));
+               dynamic_cast<Music *> ($$)->set_mus_property ("span-direction",
+                       gh_int2scm (STOP));
        }
        | EVENT_IDENTIFIER      {
                $$ = unsmob_music ($1);
@@ -1629,7 +1595,14 @@ direction_reqd_event:
                $$ = a;
        }
        ;
-       
+
+oct_check:
+       /**/ { $$ = SCM_EOL; }
+       | '='  { $$ = gh_int2scm (0); }
+       | '=' sub_quotes { $$ = gh_int2scm ($2); }
+       | '=' sup_quotes { $$ = gh_int2scm ($2); }
+       ;
+
 sup_quotes:
        '\'' {
                $$ = 1;
@@ -1696,26 +1669,6 @@ pitch_also_in_chords:
        | steno_tonic_pitch
        ;
 
-
-
-
-
-extender_req:
-       EXTENDER {
-               if (!THIS->lexer_->lyric_state_b ())
-                       THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
-               $$ = MY_MAKE_MUSIC("ExtenderEvent");
-       }
-       ;
-
-hyphen_req:
-       HYPHEN {
-               if (!THIS->lexer_->lyric_state_b ())
-                       THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
-               $$ = MY_MAKE_MUSIC("HyphenEvent");
-       }
-       ;
-
 close_event:
        '('     {
                Music * s= MY_MAKE_MUSIC("SlurEvent");
@@ -1921,8 +1874,8 @@ bass_number:
        ;
 
 bass_mod:
-       '-'     { $$ = -1; }
-       | '+'   { $$ = 1; } 
+       '-'     { $$ = -2; }
+       | '+'   { $$ = 2; } 
        | '!'   { $$ = 0; }
        ;
 
@@ -1992,21 +1945,26 @@ optional_rest:
        ;
 
 simple_element:
-       pitch exclamations questions optional_notemode_duration optional_rest {
+       pitch exclamations questions oct_check optional_notemode_duration optional_rest {
 
                Input i = THIS->pop_spot ();
                if (!THIS->lexer_->note_state_b ())
                        THIS->parser_error (_ ("Have to be in Note mode for notes"));
 
                Music *n = 0;
-               if ($5)
+               if ($6)
                        n =  MY_MAKE_MUSIC("RestEvent");
                else
                        n =  MY_MAKE_MUSIC("NoteEvent");
                
                n->set_mus_property ("pitch", $1);
-               n->set_mus_property ("duration", $4);
+               n->set_mus_property ("duration", $5);
 
+               if (gh_number_p ($4))
+               {
+                       int q = gh_scm2int ($4); 
+                       n->set_mus_property ("absolute-octave", gh_int2scm (q-1));
+               }
 
                if ($3 % 2)
                        n->set_mus_property ("cautionary", SCM_BOOL_T);
@@ -2021,6 +1979,21 @@ simple_element:
                n->set_spot (i);
                $$ = v;
        }
+       | DRUM_PITCH optional_notemode_duration {
+               Input i = THIS->pop_spot ();
+
+               Music *n =  MY_MAKE_MUSIC("NoteEvent");
+               n->set_mus_property ("duration" ,$2);
+               n->set_mus_property ("drum-type" , $1);
+
+               Music *v = MY_MAKE_MUSIC("EventChord");
+               v->set_mus_property ("elements", scm_list_n (n->self_scm (), SCM_UNDEFINED));
+               scm_gc_unprotect_object (n->self_scm());
+               v->set_spot (i);
+               n->set_spot (i);
+               $$ = v;
+               
+       }
        | figure_spec optional_notemode_duration {
                Music * m = unsmob_music ($1);
                Input i = THIS->pop_spot (); 
@@ -2049,6 +2022,8 @@ simple_element:
                velt->set_mus_property ("elements", scm_list_n (ev->self_scm (),SCM_UNDEFINED));
                velt->set_spot (i);
 
+               scm_gc_unprotect_object (ev->self_scm());
+
                $$ = velt;
        }
        | MULTI_MEASURE_REST optional_notemode_duration         {
@@ -2150,10 +2125,10 @@ step_number:
                $$ = make_chord_step ($1, 0);
         } 
        | bare_unsigned '+' {
-               $$ = make_chord_step ($1, 1);
+               $$ = make_chord_step ($1, SHARP);
        }
        | bare_unsigned CHORD_MINUS {
-               $$ = make_chord_step ($1,-1);
+               $$ = make_chord_step ($1, FLAT);
        }
         ;      
 
@@ -2284,6 +2259,9 @@ markup:
        STRING {
                $$ = make_simple_markup ($1);
        }
+       | MARKUP_HEAD_EMPTY {
+               $$ = scm_list_n ($1, SCM_UNDEFINED);
+       }
        | MARKUP_HEAD_MARKUP0 markup {
                $$ = scm_list_n ($1, $2, SCM_UNDEFINED);
        }
@@ -2308,6 +2286,9 @@ markup:
        | MARKUP_HEAD_SCM0_SCM1_SCM2 embedded_scm embedded_scm embedded_scm {
                $$ = scm_list_n ($1, $2, $3, $4, SCM_UNDEFINED);
        }
+       | MARKUP_HEAD_SCM0_SCM1 embedded_scm embedded_scm {
+               $$ = scm_list_n ($1, $2, $3, SCM_UNDEFINED);
+       }
        | MARKUP_IDENTIFIER {
                $$ = $1;
        }
@@ -2397,8 +2378,8 @@ My_lily_lexer::try_special_identifiers (SCM * destination, SCM sid)
        } else if (gh_number_p (sid)) {
                *destination = sid;
                return NUMBER_IDENTIFIER;
-       } else if (unsmob_translator_def (sid)) {
-               *destination = unsmob_translator_def (sid)->clone_scm();
+       } else if (unsmob_context_def (sid)) {
+               *destination = unsmob_context_def (sid)->clone_scm();
                return TRANSLATOR_IDENTIFIER;
        } else if (unsmob_score (sid)) {
                Score *sc =  new Score (*unsmob_score (sid));
@@ -2426,3 +2407,90 @@ My_lily_lexer::try_special_identifiers (SCM * destination, SCM sid)
 
        return -1;      
 }
+
+Music *
+property_op_to_music (SCM op)
+{
+       Music * m = 0;
+       SCM tag = gh_car (op);
+       SCM symbol  = gh_cadr (op);
+       SCM args = gh_cddr (op);
+       SCM grob_val = SCM_UNDEFINED;
+       SCM grob_sym = SCM_UNDEFINED;
+       SCM val = SCM_UNDEFINED;
+       
+       if (tag == ly_symbol2scm ("assign"))
+               {
+               m =  MY_MAKE_MUSIC("PropertySet");
+               val = gh_car (args);
+               }
+       else if (tag == ly_symbol2scm ("unset"))
+               m =  MY_MAKE_MUSIC("PropertyUnset");
+       else if (tag == ly_symbol2scm ("poppush")
+                || tag == ly_symbol2scm ("push"))
+               {
+               m  = MY_MAKE_MUSIC("OverrideProperty");
+               grob_sym = gh_car (args);
+               grob_val = gh_cadr (args);
+               }
+       else if (tag == ly_symbol2scm ("pop")) {
+               m = MY_MAKE_MUSIC("RevertProperty");
+               grob_sym = gh_car (args);
+               }
+
+       m->set_mus_property ("symbol", symbol);
+
+       if (val != SCM_UNDEFINED)
+               m->set_mus_property ("value", val);
+       if (grob_val != SCM_UNDEFINED)
+               m->set_mus_property ("grob-value", grob_val);
+
+       if (grob_sym != SCM_UNDEFINED)
+               {
+               bool itc = internal_type_checking_global_b;
+               /* UGH.
+               */
+               bool autobeam = gh_equal_p (symbol, ly_symbol2scm ("autoBeamSettings"));
+               if (autobeam)
+                       internal_type_checking_global_b = false;
+               m->set_mus_property ("grob-property", grob_sym);
+               if (autobeam)
+                       internal_type_checking_global_b = itc;
+               }
+
+       if (op == ly_symbol2scm ("poppush"))
+               m->set_mus_property ("pop-first", SCM_BOOL_T); 
+
+
+       return m;
+}
+
+Music*
+context_spec_music (SCM type, SCM id, Music * m, SCM ops)
+{
+       Music * csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
+
+       csm->set_mus_property ("element", m->self_scm ());
+       scm_gc_unprotect_object (m->self_scm ());
+
+       csm->set_mus_property ("context-type",
+               gh_symbol_p (type) ? type : scm_string_to_symbol (type));
+       csm->set_mus_property ("property-operations", ops);
+
+       if (gh_string_p (id))
+               csm->set_mus_property ("context-id", id);
+       return csm;
+}
+
+
+SCM
+get_next_unique_context ()
+{
+       static int new_context_count;
+
+       char s[1024];
+       snprintf (s, 1024, "uniqueContext%d", new_context_count ++);
+               
+       return scm_makfrom0str (s);
+}
+