Class: TRuby::ParserCombinator::TokenParser

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

Overview

Base class for token parsers

Instance Method Summary collapse

Instance Method Details

#<<(other) ⇒ Object

Skip right: parse both, keep left result



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 52

def <<(other)
  TokenSkipRight.new(self, other)
end

#>>(other) ⇒ Object

Sequence: run this parser, then the other



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 12

def >>(other)
  TokenSequence.new(self, other)
end

#label(name) ⇒ Object

Label: add a descriptive label for error messages



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 57

def label(name)
  TokenLabel.new(self, name)
end

#many ⇒ Object

Many: zero or more repetitions



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 27

def many
  TokenMany.new(self)
end

#many1 ⇒ Object

Many1: one or more repetitions



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 32

def many1
  TokenMany1.new(self)
end

#map(&block) ⇒ Object

Map: transform the result



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 22

def map(&block)
  TokenMap.new(self, block)
end

#optional ⇒ Object

Optional: zero or one



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 37

def optional
  TokenOptional.new(self)
end

#parse(tokens, position = 0) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 7

def parse(tokens, position = 0)
  raise NotImplementedError
end

#sep_by(delimiter) ⇒ Object

Separated by: parse items separated by delimiter



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 42

def sep_by(delimiter)
  TokenSepBy.new(self, delimiter)
end

#sep_by1(delimiter) ⇒ Object

Separated by 1: at least one item



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 47

def sep_by1(delimiter)
  TokenSepBy1.new(self, delimiter)
end

#|(other) ⇒ Object

Alternative: try this parser, if it fails try the other



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# File 'lib/t_ruby/parser_combinator/token/token_parser.rb', line 17

def |(other)
  TokenAlternative.new(self, other)
end