Class: Rux::Lexer

Inherits:

Object

• Object
• Rux::Lexer

Defined in:

lib/rux/lexer.rb

Defined Under Namespace

Classes: EOFError, TransitionError

Instance Attribute Summary

• #source_buffer ⇒ Object readonly

  Returns the value of attribute source_buffer.

Instance Method Summary

• #advance ⇒ Object
• #initialize(source_buffer) ⇒ Lexer constructor

  A new instance of Lexer.

Constructor Details

#initialize(source_buffer) ⇒ Lexer

Returns a new instance of Lexer.

# File 'lib/rux/lexer.rb', line 8

def initialize(source_buffer)
  @source_buffer = source_buffer
  @stack = [RubyLexer.new(source_buffer, 0)]
  @generator = to_enum(:each_token)
end

Instance Attribute Details

#source_buffer ⇒ Object (readonly)

Returns the value of attribute source_buffer.

# File 'lib/rux/lexer.rb', line 6

def source_buffer
  @source_buffer
end

Instance Method Details

#advance ⇒ Object

# File 'lib/rux/lexer.rb', line 14

def advance
  @generator.next
rescue StopIteration
  [nil, ['$eof']]
end