Class: Neg::Parser::SubParser

Inherits:

Object

• Object
• Neg::Parser::SubParser

Defined in:

lib/neg/parser.rb

Overview

– sub parsers ++

Direct Known Subclasses

CharacterParser, CompositeParser, NonTerminalParser, RepetitionParser, StringParser

Instance Method Summary

• #*(range) ⇒ Object
• #+(pa) ⇒ Object
• #[](name) ⇒ Object
• #parse(input_or_string) ⇒ Object
• #|(pa) ⇒ Object

Instance Method Details

#*(range) ⇒ Object

# File 'lib/neg/parser.rb', line 114

def *(range)

  RepetitionParser.new(self, range)
end

#+(pa) ⇒ Object

# File 'lib/neg/parser.rb', line 99

def +(pa)

  SequenceParser.new(self, pa)
end

#[](name) ⇒ Object

# File 'lib/neg/parser.rb', line 109

def [](name)

  NonTerminalParser.new(name.to_s, self)
end

#parse(input_or_string) ⇒ Object

# File 'lib/neg/parser.rb', line 119

def parse(input_or_string)

  input = Neg::Input(input_or_string)
  start = input.position

  success, result = do_parse(input)

  input.rewind(start) unless success

  [ nil, success, start, result ]
end

#|(pa) ⇒ Object

# File 'lib/neg/parser.rb', line 104

def |(pa)

  AlternativeParser.new(self, pa)
end