Class: Rsec::Seq_

Inherits:
Struct
  • Object
show all
Includes:
Parser
Defined in:
lib/rsec/parsers/seq.rb,
lib/rsec/helpers.rb

Overview

skips skipper between tokens

Instance Attribute Summary collapse

Attributes included from Parser

#name

Instance Method Summary collapse

Methods included from Parser

#&, #*, #<<, #>>, #^, #cached, #eof, #fail, #inspect, #join, #map, #maybe, #parse, #parse!, #star, #|

Instance Attribute Details

#first ⇒ Object

Returns the value of attribute first

Returns:

  • (Object) —

    the current value of first



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# File 'lib/rsec/parsers/seq.rb', line 32

def first
  @first
end

#rest ⇒ Object

Returns the value of attribute rest

Returns:

  • (Object) —

    the current value of rest



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# File 'lib/rsec/parsers/seq.rb', line 32

def rest
  @rest
end

#skipper ⇒ Object

Returns the value of attribute skipper

Returns:

  • (Object) —

    the current value of skipper



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# File 'lib/rsec/parsers/seq.rb', line 32

def skipper
  @skipper
end

Instance Method Details

#[](idx, &p) ⇒ Object 



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# File 'lib/rsec/helpers.rb', line 340

def [] idx, &p
  raise 'index out of range' if idx > rest.size or idx < 0
  # optimize parsers, use skip if possible
  new_first = (0 == idx ? first : Rsec.try_skip_pattern(first))
  new_rest = rest().map.with_index do |p, i|
    # NOTE rest start with 1
    (i+1) == idx ? p : Rsec.try_skip_pattern(p)
  end
  SeqOne_[new_first, new_rest, skipper, idx].map p
end

#_parse(ctx) ⇒ Object 



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# File 'lib/rsec/parsers/seq.rb', line 35

def _parse ctx
  res = first._parse ctx
  return INVALID if INVALID[res]
  ret = [res]

  rest.each do |e|
    return INVALID if INVALID[skipper._parse ctx]
    res = e._parse ctx
    return INVALID if INVALID[res]
    ret << res
  end
  ret
end

#inner(&p) ⇒ Object 



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# File 'lib/rsec/helpers.rb', line 355

def inner &p
  Inner[self].map p
end

#unbox(&p) ⇒ Object 



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# File 'lib/rsec/helpers.rb', line 351

def unbox &p
  Unbox[self].map p
end