parser.y

   1 %{ // -*-Fundamental-*-
   2 #include <iostream.h>
   3 //#include "mudobs.hh"
   4 #include "lexer.hh"
   5 #include "staff.hh"
   6 #include "score.hh"
   7 #include "keyword.hh"
   8 #include "globvars.hh"
   9 #include "debug.hh"
  10 #include "parseconstruct.hh"
  11 #define YYDEBUG 1
  12
  13
  14 %}
  15
  16
  17 %union {
  18      int i;
  19     Real real;
  20     Command *command;
  21     Identifier *id;
  22
  23     Voice *voice;
  24     Voice_element *el;
  25     Staff *staff;
  26     String *string;
  27     Score *score;
  28 }
  29
  30 %token VOICE STAFF SCORE TITLE RHYTHMSTAFF BAR NOTENAME
  31
  32 %token <id> IDENTIFIER
  33 %token <string> PITCH DURATION RESTNAME
  34 %token <real> REAL
  35
  36
  37 %type <voice> voice_block voice_body voice_elts voice_elts_dollar
  38 %type <el> voice_elt
  39 %type <command> score_command
  40 %type <score> score_block score_body
  41 %type <staff> staff_block  rhythmstaff_block rhythmstaff_body
  42
  43 %%
  44
  45 mudela:
  46         score_block {
  47                 delete the_score;
  48                 the_score = $1;
  49         }
  50         ;
  51
  52
  53 score_block: SCORE '{' score_body '}'   { $$ = $3; }
  54         ;
  55
  56 score_body:             { $$ = new Score; }
  57         | score_body staff_block        { $$->add($2); }
  58         | score_body score_command      { $$->add($2); }
  59         ;
  60
  61 staff_block:
  62         rhythmstaff_block
  63         ;
  64
  65 rhythmstaff_block:
  66         RHYTHMSTAFF '{' rhythmstaff_body '}'    { $$ = $3; }
  67         ;
  68
  69 rhythmstaff_body:
  70         /* empty */                     { $$ = get_new_rhythmstaff(); }
  71         | rhythmstaff_body voice_block  { $$->add_voice($2); }
  72         ;
  73
  74 voice_block:
  75         VOICE '{' voice_body '}'        { $$ = $3; }
  76         ;
  77
  78
  79 voice_body:
  80         REAL voice_elts_dollar { $$ = $2; $$->start = $1; }
  81         | voice_elts_dollar     { $$ = $1; }
  82         ;
  83
  84 voice_elts_dollar:
  85         '$' voice_elts '$'  { $$ = $2; }
  86         ;
  87
  88 voice_elts:
  89         /* empty */             {
  90             $$ = new Voice;
  91         }
  92         | voice_elts voice_elt {
  93             $$->add($2);
  94         }
  95         ;
  96
  97 voice_elt:
  98         PITCH DURATION                  { $$ = get_note_element(*$1, *$2);
  99
 100         }
 101         |  RESTNAME DURATION            { $$ = get_rest_element(*$1, *$2);
 102
 103         }
 104         ;
 105
 106 score_command:
 107         BAR REAL                        {
 108                 $$ = get_bar_command($2);
 109         }
 110         ;
 111
 112 %%
 113
 114 void
 115 parse_file(String s)
 116 {
 117    *mlog << "Parsing ... ";
 118    yydebug = debug_flags & DEBUGPARSER;
 119    new_input(s);
 120    yyparse();
 121 }