]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/parser.yy
* lily/bar-line.cc (compound_barline): add bartype : (dotted).
[lilypond.git] / lily / parser.yy
index 88a815741b5afba58bcfe920b5070e320ddc89d0..4bcf3b7d5d2c27c5039f0aca999a79c961c46ad1 100644 (file)
@@ -53,7 +53,6 @@ TODO:
 */
 
 #include <ctype.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <stdio.h>
 
@@ -83,10 +82,11 @@ 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 +163,11 @@ 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 ();
 }
 
@@ -245,6 +246,7 @@ yylex (YYSTYPE *s,  void * v)
 %token AUTOCHANGE
 %token BAR
 %token BREATHE
+%token CHANGE
 %token CHORDMODIFIERS  
 %token CHORDS
 %token LESSLESS
@@ -301,7 +303,7 @@ 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 +316,7 @@ yylex (YYSTYPE *s,  void * v)
 %type <i>      exclamations questions dots optional_rest
 %type <i>       bass_mod
 %type <scm>    grace_head
+%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
@@ -324,9 +327,7 @@ yylex (YYSTYPE *s,  void * v)
 %token <scm>    FRACTION
 %token <id>    IDENTIFIER
 %token <scm>   CHORDNAMES
-
-%token <scm> CHORD_MODIFIER
-
+%token <scm>   CHORD_MODIFIER
 %token <scm>   SCORE_IDENTIFIER
 %token <scm>   MUSIC_OUTPUT_DEF_IDENTIFIER
 %token <scm>   NUMBER_IDENTIFIER
@@ -378,13 +379,13 @@ 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 <music>  music_property_def context_change 
 %type <scm> Music_list
+%type <scm> property_operation context_mod translator_mod optional_context_mod
 %type <outputdef>  music_output_def_body
 %type <music> shorthand_command_req
 %type <music>  post_event tagged_post_event
 %type <music> command_req verbose_command_req
-%type <music>  extender_req
 %type <music> hyphen_req
 %type <music> string_number_event
 %type <scm>    string bare_number number_expression number_term number_factor 
@@ -428,7 +429,36 @@ toplevel_expression:
                THIS->input_file_->header_ = $1;
        }
        | score_block {
-               THIS->input_file_->scores_.push ($1);
+               Score * sc = $1;
+
+               SCM head = ly_module_p (sc->header_) ? sc->header_ : THIS->input_file_->header_.to_SCM ();
+
+               Path p = split_path (THIS->output_basename_);
+               int *c =  &THIS->input_file_->score_count_;
+               if (*c)
+                       {
+                       p.base += "-" + to_string (*c);
+                       }
+
+               (*c)++;
+               SCM outname = scm_makfrom0str (p.to_string ().to_str0());
+
+               for (int i=0; i < sc->defs_.size (); i++)
+                       default_rendering (sc->music_, sc->defs_[i]->self_scm(),head, outname);
+
+               if (sc->defs_.empty ())
+               {
+                  Music_output_def *id =
+                       unsmob_music_output_def (THIS->lexer_->lookup_identifier
+                               ("$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 {
                if (dynamic_cast<Paper_def*> ($1))
@@ -558,61 +588,25 @@ 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($$);
+
+               for (SCM p = $3; gh_pair_p (p); p = ly_cdr (p)) {
+                       SCM tag = gh_caar (p);
+                       td->add_context_mod (scm_list_n (ly_symbol2scm ("assign"),
+                                                       tag, ly_cdar (p), SCM_UNDEFINED));
+               }
        }
-       | translator_spec_body REMOVE STRING  {
-               unsmob_translator_def ($$)->remove_element ($3);
+       | translator_spec_body context_mod {
+               unsmob_context_def ($$)->add_context_mod ($2);          
        }
        ;
 
@@ -626,12 +620,7 @@ 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 );
-               }
+
        }
        ;
 
@@ -660,7 +649,7 @@ score_body:
                $$->header_ = $2;
        }
        | score_body output_def {
-               $$->add_output ($2);
+               $$->defs_.push ($2);
        }
        | score_body error {
 
@@ -720,6 +709,7 @@ music_output_def_body:
        }
        | music_output_def_body translator_spec_block   {
                $$->assign_translator ($2);
+
        }
        | music_output_def_body tempo_event  {
                /*
@@ -891,32 +881,32 @@ Simple_music:
        | MUSIC_IDENTIFIER {
                $$ = 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 (""));
-
-               $$ = csm;
+context_mod_list:
+       /* */  { $$ = SCM_EOL; }
+       | context_mod_list context_mod  {
+                $$ = gh_cons ($2, $1);
        }
-       | AUTOCHANGE STRING Music       {
-       Music*chm = MY_MAKE_MUSIC("AutoChangeMusic");
+       ;
+
+Composite_music:
+       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);
 
@@ -977,34 +967,18 @@ 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");
+       | CONTEXT string '=' string optional_context_mod Music {
+               $$ = context_spec_music ($2, $4, $6, $5);
 
-               csm->set_mus_property ("element", $5->self_scm ());
-               scm_gc_unprotect_object ($5->self_scm ());
-
-               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 ();
        }
@@ -1138,8 +1112,8 @@ part_combined_music:
        }
        ;
 
-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);
@@ -1149,107 +1123,55 @@ 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);
        }
-       ;
-
-simple_property_def:
-       PROPERTY STRING '.' STRING '='  scalar {
-               Music *t = set_property_music (scm_string_to_symbol ($4), $6);
-               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 UNSET {
+               $$ = scm_list_n (ly_symbol2scm ("unset"),
+                       scm_string_to_symbol ($1), SCM_UNDEFINED);
        }
-       | PROPERTY STRING '.' STRING UNSET {
-               
-               Music *t = MY_MAKE_MUSIC("PropertyUnset");
-               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
-
-               Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-               csm->set_mus_property ("element", t->self_scm ());
-               scm_gc_unprotect_object (t->self_scm ());
-
-               $$ = csm;
-               $$->set_spot (THIS->here_input ());
-
-               csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
+       | STRING SET embedded_scm '=' embedded_scm {
+               $$ = scm_list_n (ly_symbol2scm ("poppush"),
+                       scm_string_to_symbol ($1), $3, $5, 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 OVERRIDE embedded_scm '=' embedded_scm {
+               $$ = scm_list_n (ly_symbol2scm ("push"),
+                       scm_string_to_symbol ($1), $3, $5, SCM_UNDEFINED);
        }
-       | PROPERTY STRING '.' STRING OVERRIDE
-               embedded_scm '=' embedded_scm
-       {
-               /*
-                       UGH UGH UGH UGH.
-               */
-               bool autobeam
-                 = gh_equal_p ($4, scm_makfrom0str ("autoBeamSettings"));
-               bool itc = internal_type_checking_global_b;
-
-               Music *t = MY_MAKE_MUSIC("OverrideProperty");
-               t->set_mus_property ("symbol", scm_string_to_symbol ($4));
-               if (autobeam)
-                       internal_type_checking_global_b = false;
-               t->set_mus_property ("grob-property", $6);
-               t->set_mus_property ("grob-value", $8);
-               if (autobeam)
-                       internal_type_checking_global_b = itc;
+       | STRING REVERT embedded_scm {
+               $$ = scm_list_n (ly_symbol2scm ("pop"),
+                       scm_string_to_symbol ($1), $3, SCM_UNDEFINED);
+       }
+       ;
 
-               Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
-               csm->set_mus_property ("element", t->self_scm ());
-               scm_gc_unprotect_object (t->self_scm ());
+translator_mod:
+       CONSISTSEND { $$ = ly_symbol2scm ("consists-end"); }
+       | CONSISTS { $$ = ly_symbol2scm ("consists"); }
+       | REMOVE { $$ = ly_symbol2scm ("remove"); }
 
-               $$ = csm;
-               $$->set_spot (THIS->here_input ());
+       | ACCEPTS { $$ = ly_symbol2scm ("accepts"); }
+       | DENIES { $$ = ly_symbol2scm ("denies"); }
 
-               csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
+       | ALIAS { $$ = ly_symbol2scm ("alias"); }
+       | TYPE { $$ = ly_symbol2scm ("translator-type"); }
+       | DESCRIPTION { $$ = ly_symbol2scm ("description"); }
+       | NAME { $$ = ly_symbol2scm ("context-name"); }
+       ;
 
+context_mod:
+       property_operation { $$ = $1; }
+       | translator_mod STRING {
+               $$ = scm_list_n ($1, $2, SCM_UNDEFINED);
        }
-       | 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_property_def:
+       PROPERTY STRING '.' property_operation {
+               Music * t = property_op_to_music ($4);
                Music *csm = MY_MAKE_MUSIC("ContextSpeccedMusic");
+
                csm->set_mus_property ("element", t->self_scm ());
                scm_gc_unprotect_object (t->self_scm ());
 
@@ -1258,6 +1180,11 @@ simple_property_def:
 
                csm-> set_mus_property ("context-type", scm_string_to_symbol ($2));
        }
+       | ONCE music_property_def {
+               $$ = $2;
+               SCM e = $2->get_mus_property ("element");
+               unsmob_music (e)->set_mus_property ("once", SCM_BOOL_T);
+       }
        ;
 
 
@@ -1269,8 +1196,6 @@ scalar:
        | DIGIT { $$ = gh_int2scm ($1); }
         ;
 
-
-
 /*
 This is a trick:
 
@@ -1464,10 +1389,7 @@ command_req:
        ;
 
 shorthand_command_req:
-       extender_req {
-               $$ = $1;
-       }
-       | hyphen_req {
+       hyphen_req {
                $$ = $1;
        }
        | BREATHE {
@@ -1545,6 +1467,11 @@ post_event:
        direction_less_event {
                $$ = $1;
        }
+       | EXTENDER {
+               if (!THIS->lexer_->lyric_state_b ())
+                       THIS->parser_error (_ ("Have to be in Lyric mode for lyrics"));
+               $$ = MY_MAKE_MUSIC("ExtenderEvent");
+       }
        | script_dir direction_reqd_event {
                if ($1)
                        $2->set_mus_property ("direction", gh_int2scm ($1));
@@ -1599,11 +1526,13 @@ 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);
@@ -1696,18 +1625,6 @@ 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"));
-               $$ = MY_MAKE_MUSIC("ExtenderEvent");
-       }
-       ;
-
 hyphen_req:
        HYPHEN {
                if (!THIS->lexer_->lyric_state_b ())
@@ -2150,10 +2067,10 @@ step_number:
                $$ = 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);
        }
         ;      
 
@@ -2397,8 +2314,8 @@ 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 +2343,88 @@ 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", 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);
+}