Class: TDParser::ConcatParser

Inherits:
CompositeParser show all
Defined in:
lib/tdp.rb

Instance Attribute Summary

Attributes inherited from CompositeParser

#parsers

Instance Method Summary collapse

Methods inherited from CompositeParser

#==, #optimize, #same?

Methods inherited from Parser

#%, #*, #+, #/, #==, #>, #>>, #do, #optimize, #parse, #peek, #same?, #to_proc, #|, #~@

Methods included from TDParser

#any_rule, #backref, #chainl, #chainr, #condition_rule, define, #empty_rule, #fail_rule, #leftrec, #none_rule, #rightrec, #rule, #stackref, #state, #token

Methods included from BufferUtils

#prepare, #recover

Constructor Details

#initialize(r1, r2) ⇒ ConcatParser

Returns a new instance of ConcatParser.



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# File 'lib/tdp.rb', line 374

def initialize(r1, r2)
  super(r1, r2)
end

Instance Method Details

#-(r) ⇒ Object 



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# File 'lib/tdp.rb', line 390

def -(r)
  @parsers[0] - (@parsers[1] - r)
end

#call(tokens, buff) ⇒ Object 



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# File 'lib/tdp.rb', line 378

def call(tokens, buff)
  if( (x = @parsers[0].call(tokens, buff)).nil? )
    nil
  else
    if( (y = @parsers[1].call(tokens, buff)).nil? )
      nil
    else
      x + y
    end
  end
end

#to_s ⇒ Object 



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# File 'lib/tdp.rb', line 394

def to_s()
  "(#{@parsers[0].to_s()} #{@parsers[1].to_s()})"
end