Class: Parslet::Atoms::Ignored

Inherits:
Base
  • Object
show all
Defined in:
lib/parslet/atoms/ignored.rb

Overview

Ignores the result of a match.

Example:

str('foo')            # will return 'foo',
str('foo').ignore     # will return nil

Constant Summary

Constants included from Precedence

Precedence::ALTERNATE, Precedence::BASE, Precedence::LOOKAHEAD, Precedence::OUTER, Precedence::REPETITION, Precedence::SEQUENCE

Instance Attribute Summary collapse

Attributes inherited from Base

#label

Instance Method Summary collapse

Methods inherited from Base

#accept, #cached?, #inspect, #parse, #parse_with_debug, precedence, #setup_and_apply, #to_s, #try

Methods included from CanFlatten

#flatten, #flatten_repetition, #flatten_sequence, #foldl, #merge_fold, #warn_about_duplicate_keys

Methods included from DSL

#>>, #absent?, #as, #capture, #ignore, #maybe, #present?, #repeat, #|

Constructor Details

#initialize(parslet) ⇒ Ignored

Returns a new instance of Ignored.



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# File 'lib/parslet/atoms/ignored.rb', line 10

def initialize(parslet)
  super()

  @parslet = parslet
end

Instance Attribute Details

#parslet ⇒ Object (readonly)

Returns the value of attribute parslet.



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# File 'lib/parslet/atoms/ignored.rb', line 9

def parslet
  @parslet
end

Instance Method Details

#apply(source, context, consume_all) ⇒ Object 



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# File 'lib/parslet/atoms/ignored.rb', line 16

def apply(source, context, consume_all)
  success, _ = result = parslet.apply(source, context, consume_all)

  return result unless success
  succ(nil)
end

#to_s_inner(prec) ⇒ Object 



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# File 'lib/parslet/atoms/ignored.rb', line 23

def to_s_inner(prec)
  "ignored(#{parslet.to_s(prec)})"
end