Class: TRuby::ParserCombinator::FlatMap

Inherits:
Parser
  • Object
show all
Defined in:
lib/t_ruby/parser_combinator.rb

Overview

FlatMap (bind)

Instance Method Summary collapse

Methods inherited from Parser

#<<, #>>, #between, #flat_map, #label, #lookahead, #many, #many1, #map, #not_followed_by, #optional, #sep_by, #sep_by1, #|

Constructor Details

#initialize(parser, func) ⇒ FlatMap

Returns a new instance of FlatMap.



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# File 'lib/t_ruby/parser_combinator.rb', line 278

def initialize(parser, func)
  @parser = parser
  @func = func
end

Instance Method Details

#parse(input, position = 0) ⇒ Object 



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# File 'lib/t_ruby/parser_combinator.rb', line 283

def parse(input, position = 0)
  result = @parser.parse(input, position)
  return result if result.failure?

  next_parser = @func.call(result.value)
  next_parser.parse(input, result.position)
end