parser loading in separate file

to make loading only selected components more convenient

TODO.md

@@ -1,6 +1,22 @@
 # grely
 
-* produce relative/absolute mode
-* choose absolute pitch of the choral key
+* update rspec matchers
+
+* relative mode
+* choose absolute pitch of the choral key or modern key to set the melody in
+* handle accidentals and key
 
 * produce lilypond gregorian notation instead of modern (will be quite hard to do - has to correctly determine neumes)
+
+* the PEG parser is too restrictive for real-world use;
+explore the solution of gabc-tk
+
+* test gem build and functionality of installed executables
+
+# lygre
+
+* convert simple lilypond scores (like in the In adiutorium project) to gabc
+
+# gremux
+
+* convert to musixtex (both modern and quadratic notation)

lib/grely.rb

@@ -4,10 +4,6 @@
 gabcscore 
 gabcsemantics
 gabcpitchreader
+gabcparser
 lilypondconvertor
 }.each {|f| require_relative File.join('lygre', f)}
-
-# gabc parser
-require 'polyglot'
-require 'treetop'
-Treetop.load File.expand_path('../lib/lygre/gabcgrammar', File.dirname(__FILE__))

lib/lygre/gabcparser.rb

@@ -0,0 +1,4 @@
+# load treetop grammar, emit class GabcParser
+require 'polyglot'
+require 'treetop'
+Treetop.load File.expand_path('gabcgrammar', File.dirname(__FILE__))