class Peggy::Production
Matcher of a grammar production. The one and only child defines the production.
Attributes
<<[RW]
The production definition.
child[RW]
The production definition.
Public Class Methods
new(name=nil, child=nil)
click to toggle source
Init the name and child.
Calls superclass method
Peggy::Reference::new
# File lib/parse/builder.rb, line 262 def initialize name=nil, child=nil super name @child = child end
Public Instance Methods
match(parser, index)
click to toggle source
Match the production one time. If it matches the end index is returned. If not, NO_MATCH is returned.
# File lib/parse/builder.rb, line 272 def match parser, index raise "production name not set" unless name raise "production child not set" unless child report @child.match(parser, index) end
to_s()
click to toggle source
Convert element to String.
# File lib/parse/builder.rb, line 279 def to_s "#{name}: #{child}" end