Class: RBNF::Opt

Inherits:
Unary show all
Defined in:
lib/rbnf/nodes.rb

Overview

Optation node

Constant Summary

Constants included from RBNF

DEFS, VERSION

Instance Attribute Summary

Attributes inherited from Unary

#a

Instance Method Summary collapse

Methods inherited from Unary

#initialize

Methods included from RBNF

#=~, [], #alt, #cat, #comps, def, define, dememoize, #except, #group, method_missing, #opt, #rep, #rep_n

Constructor Details

This class inherits a constructor from RBNF::Unary

Instance Method Details

#match(s) ⇒ Object 



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# File 'lib/rbnf/nodes.rb', line 60

def match(s)
  s.empty? or a=~s
end

#to_s ⇒ Object 



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# File 'lib/rbnf/nodes.rb', line 57

def to_s
  "[ #{a} ]"
end