Add first version of ruby bindings.

src/bindings/ruby/lib/hammer.rb

@@ -0,0 +1,65 @@
+require 'hammer/hammer_ext'
+require 'hammer/internal'
+require 'hammer/parser'
+require 'hammer/parser_builder'
+
+# TODO:
+# Probably need to rename this file to 'hammer-parser.rb', so
+# people can use "require 'hammer-parser'" in their code.
+
+
+
+# TODO: Put tests in test/ directory.
+
+parser = Hammer::Parser.build do
+  token 'blah'
+  ch 'a'
+  choice {
+    sequence {
+      token 'abc'
+    }
+    token 'def'
+  }
+end
+
+p parser
+
+if parser
+  p parser.parse 'blahaabcd'
+  p parser.parse 'blahadefd'
+  p parser.parse 'blahablad'
+  p parser.parse 'blaha'
+  p parser.parse 'blah'
+end
+
+parser = Hammer::Parser::Sequence.new(
+  Hammer::Parser::Token.new('Hello '),
+  Hammer::Parser::Choice.new(
+    Hammer::Parser::Token.new('Mom'),
+    Hammer::Parser::Token.new('Dad')
+  ),
+  Hammer::Parser::Token.new('!')
+)
+p parser.parse 'Hello Mom!'
+
+parser = Hammer::Parser.build {
+  token 'Hello '
+  choice {
+    token 'Mom'
+    token 'Dad'
+  }
+  token '!'
+}
+p parser.parse 'Hello Mom!'
+
+parser = Hammer::ParserBuilder.new
+  .token('Hello ')
+  .choice(Hammer::Parser::Token.new('Mom'), Hammer::Parser::Token.new('Dad'))
+  .token('!')
+  .build
+p parser.parse 'Hello Mom!'
+
+# not yet working
+#h = Hammer::Parser
+#parser = h.sequence(h.token('Hello'), h.choice(h.token('Mom'), h.token('Dad')), h.token('!'))
+#p parser.parse 'Hello Mom!'