Class: Journey::Scanner

Inherits:

Object

• Object
• Journey::Scanner

Defined in:

lib/journey/scanner.rb

Instance Method Summary

• #eos? ⇒ Boolean
• #initialize ⇒ Scanner constructor

  A new instance of Scanner.

• #next_token ⇒ Object
• #pos ⇒ Object
• #pre_match ⇒ Object
• #scan_setup(str) ⇒ Object

Constructor Details

#initialize ⇒ Scanner

Returns a new instance of Scanner.

# File 'lib/journey/scanner.rb', line 5

def initialize
  @ss = nil
end

Instance Method Details

#eos? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/journey/scanner.rb', line 13

def eos?
  @ss.eos?
end

#next_token ⇒ Object

# File 'lib/journey/scanner.rb', line 25

def next_token
  return if @ss.eos?

  until token = scan || @ss.eos?; end
  token
end

#pos ⇒ Object

# File 'lib/journey/scanner.rb', line 17

def pos
  @ss.pos
end

#pre_match ⇒ Object

# File 'lib/journey/scanner.rb', line 21

def pre_match
  @ss.pre_match
end

#scan_setup(str) ⇒ Object

# File 'lib/journey/scanner.rb', line 9

def scan_setup str
  @ss = StringScanner.new str
end