Add basic scheme programmable engravers.

[lilypond.git] / lily / parser.yy

diff --git a/lily/parser.yy b/lily/parser.yy
index 584b6e78531d0dbb4906568dd7b07137dceffbfb..a4ac1ec0356ce3bf1afd3a0a813035b1870ded98 100644 (file)
--- a/lily/parser.yy
+++ b/lily/parser.yy
@@ -1,10 +1,21 @@
 /*
-  parser.yy -- Bison/C++ parser for LilyPond
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
-
-  (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
                  Jan Nieuwenhuizen <janneke@gnu.org>
+
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 %{
@@ -266,6 +277,7 @@ If we give names, Bison complains.
 %token <scm> BOOK_IDENTIFIER
 %token <scm> CHORDMODIFIER_PITCH
 %token <scm> CHORD_MODIFIER
+%token <scm> CHORD_REPETITION
 %token <scm> CONTEXT_DEF_IDENTIFIER
 %token <scm> DRUM_PITCH
 %token <scm> DURATION_IDENTIFIER
@@ -1274,7 +1286,7 @@ property_operation:
                $$ = scm_list_2 (ly_symbol2scm ("unset"),
                        scm_string_to_symbol ($2));
        }
-       | OVERRIDE simple_string property_path '=' embedded_scm {
+       | OVERRIDE simple_string property_path '=' scalar {
                $$ = scm_append (scm_list_2 (scm_list_3 (ly_symbol2scm ("push"),
                                                        scm_string_to_symbol ($2), $5),
                                             $3));
@@ -1304,6 +1316,17 @@ context_mod:
        | context_def_mod STRING {
                $$ = scm_list_2 ($1, $2);
        }
+       | context_def_mod embedded_scm {
+          if (ly_symbol2scm ("consists") != $1)
+          {
+            $$ = SCM_EOL;
+             PARSER->parser_error (@1, _ ("only \\consists takes non-string argument."));
+          }
+          else
+          {
+            $$ = scm_list_2 ($1, $2);
+          }
+       }
        ;
 
 context_prop_spec:
@@ -1414,13 +1437,27 @@ event_chord:
                i.set_location (@1, @2);
                $$ = MAKE_SYNTAX ("event-chord", i, elts);
        }
+       | CHORD_REPETITION optional_notemode_duration post_events {
+               Input i;
+               i.set_location (@1, @3);
+               $$ = MAKE_SYNTAX ("repetition-chord", i,
+                                 PARSER->lexer_->chord_repetition_.last_chord_,
+                                 PARSER->lexer_->chord_repetition_.repetition_function_,
+                                 $2, $3);
+       }
        | MULTI_MEASURE_REST optional_notemode_duration post_events {
                Input i;
                i.set_location (@1, @3);
                $$ = MAKE_SYNTAX ("multi-measure-rest", i, $2, $3);
        }
        | command_element
-       | note_chord_element
+       /* note chord elements are memorized into
+          PARSER->lexer_->chord_repetition_ so that the chord repetition
+          mechanism copy them when a chord repetition symbol is found
+       */
+       | note_chord_element    {
+               PARSER->lexer_->chord_repetition_.last_chord_ = $$;
+       }
        ;