Class: Join

Inherits:
Combinator show all
Defined in:
lib/hivemind/combinators.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Combinator

#&, #|

Constructor Details

#initialize(parser, separator, as: nil) ⇒ Join

Returns a new instance of Join.



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# File 'lib/hivemind/combinators.rb', line 107

def initialize(parser, separator, as: nil)
  @parser = parser
  @separator = separator
  @as = as.to_sym
  @separator_parser = Lit.new(@separator) & Mat.new(/ */) #workaround hivemind
  @@depth ||= 0
end

Instance Attribute Details

#as ⇒ Object

Returns the value of attribute as.



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# File 'lib/hivemind/combinators.rb', line 105

def as
  @as
end

#parser ⇒ Object

Returns the value of attribute parser.



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# File 'lib/hivemind/combinators.rb', line 105

def parser
  @parser
end

Instance Method Details

#parse(input, refs) ⇒ Object 



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# File 'lib/hivemind/combinators.rb', line 115

def parse(input, refs)
  success = true
  remaining = input
  results = []
  while success
    # puts "#{'  ' * @@depth}BEFORE " + @parser.label.to_s
    # p ["  " * @@depth, remaining]

    # @@depth += 1
    success, result, remaining = @parser.parse(remaining, refs)
    # @@depth -= 1
    # puts "#{'  ' * @@depth}AFTER " + @parser.label.to_s
    # p ["  " * @@depth, success, remaining, results.length]
    # puts

    results.push(result) if success
    if success
      if remaining.start_with? '    (' # fix later
        remaining = "\n#{remaining}"
      end
      success, result, remaining = @separator_parser.parse(remaining, refs)
    end
  end
  [true, results, remaining]
end