Class: Regexgen::Ast::Alternation

Inherits:
Object
  • Object
show all
Defined in:
lib/regexgen/ast.rb

Overview

Represents an alternation (e.g. ‘foo|bar`)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*options) ⇒ Alternation

Returns a new instance of Alternation.



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# File 'lib/regexgen/ast.rb', line 10

def initialize(*options)
  @precedence = 1
  @options = flatten(options).sort { |a, b| b.length - a.length }
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/regexgen/ast.rb', line 8

def options
  @options
end

#precedence ⇒ Object (readonly)

Returns the value of attribute precedence.



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# File 'lib/regexgen/ast.rb', line 8

def precedence
  @precedence
end

Instance Method Details

#length ⇒ Object 



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# File 'lib/regexgen/ast.rb', line 15

def length
  @options[0].length
end

#to_s ⇒ Object 



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# File 'lib/regexgen/ast.rb', line 19

def to_s
  @options.map { |o| Ast.parens(o, self) }.join('|')
end