class CodeRay::Scanners::Debug

Debug Scanner

Interprets the output of the Encoders::Debug encoder (basically the inverse function).

Protected Instance Methods

scan_tokens(encoder, options) click to toggle source
# File lib/coderay/scanners/debug.rb, line 21
def scan_tokens encoder, options
  
  opened_tokens = []
  
  until eos?
    
    if match = scan(/\s+/)
      encoder.text_token match, :space
      
    elsif match = scan(/ (\w+) \( ( [^\)\]* ( \. [^\)\]* )* ) \)? /x)
      if @known_token_kinds.include? self[1]
        encoder.text_token self[2].gsub(/\(.)/m, '\1'), self[1].to_sym
      else
        encoder.text_token matched, :unknown
      end
      
    elsif match = scan(/ (\w+) ([<\[]) /x)
      if @known_token_kinds.include? self[1]
        kind = self[1].to_sym
      else
        kind = :unknown
      end
      
      opened_tokens << kind
      case self[2]
      when '<'
        encoder.begin_group kind
      when '['
        encoder.begin_line kind
      else
        raise 'CodeRay bug: This case should not be reached.'
      end
      
    elsif !opened_tokens.empty? && match = scan(/ > /x)
      encoder.end_group opened_tokens.pop
      
    elsif !opened_tokens.empty? && match = scan(/ \] /x)
      encoder.end_line opened_tokens.pop
      
    else
      encoder.text_token getch, :space
      
    end
    
  end
  
  encoder.end_group opened_tokens.pop until opened_tokens.empty?
  
  encoder
end
setup() click to toggle source
Calls superclass method CodeRay::Scanners::Scanner#setup
# File lib/coderay/scanners/debug.rb, line 16
def setup
  super
  @known_token_kinds = TokenKinds.keys.map(&:to_s).to_set
end