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Module: RDoc::TokenStream

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Included In:
AnyMethod, GhostMethod, MetaMethod, Parser::Ruby
Defined in: lib/rdoc/token_stream.rb

Overview

A TokenStream is a list of tokens, gathered during the parse of some entity (say a method). Entities populate these streams by being registered with the lexer. Any class can collect tokens by including TokenStream. From the outside, you use such an object by calling the start_collecting_tokens method, followed by calls to add_token and pop_token.

Class Method Summary

Instance Method Summary

Class Method Details

.to_html(token_stream)

Converts #token_stream to HTML wrapping various tokens with <span> elements. The following tokens types are wrapped in spans with the given class names:

TkCONSTANT

'ruby-constant'

TkKW

'ruby-keyword'

TkIVAR

'ruby-ivar'

TkOp

'ruby-operator'

TkId

'ruby-identifier'

TkNode

'ruby-node'

TkCOMMENT

'ruby-comment'

TkREGEXP

'ruby-regexp'

TkSTRING

'ruby-string'

TkVal

'ruby-value'

Other token types are not wrapped in spans.

[ GitHub ] 

  


# File 'lib/rdoc/token_stream.rb', line 28



def self.to_html token_stream
  token_stream.map do |t|
    next unless t

    style = case t
            when RDoc::RubyToken::TkCONSTANT then 'ruby-constant'
            when RDoc::RubyToken::TkKW       then 'ruby-keyword'
            when RDoc::RubyToken::TkIVAR     then 'ruby-ivar'
            when RDoc::RubyToken::TkOp       then 'ruby-operator'
            when RDoc::RubyToken::TkId       then 'ruby-identifier'
            when RDoc::RubyToken::TkNode     then 'ruby-node'
            when RDoc::RubyToken::TkCOMMENT  then 'ruby-comment'
            when RDoc::RubyToken::TkREGEXP   then 'ruby-regexp'
            when RDoc::RubyToken::TkSTRING   then 'ruby-string'
            when RDoc::RubyToken::TkVal      then 'ruby-value'
            end

    text = CGI.escapeHTML t.text

    if style then
      "<span class=\"#{style}\">#{text}</span>"
    else
      text
    end
  end.join
end


  







Instance Method Details



  

    #add_token(*tokens)  
  



  

    

Alias for #add_tokens.


  



  [ GitHub ]


  

  


# File 'lib/rdoc/token_stream.rb', line 62



alias add_token add_tokens


  








  

    #add_tokens(*tokens)  
    Also known as: #add_token
  



  

    

Adds tokens to the collected tokens


  



  [ GitHub ]


  

  


# File 'lib/rdoc/token_stream.rb', line 58



def add_tokens(*tokens)
  tokens.flatten.each { |token| @token_stream << token }
end


  








  

    #collect_tokens  
    Also known as: #start_collecting_tokens
  



  

    

Starts collecting tokens


  



  [ GitHub ]


  

  


# File 'lib/rdoc/token_stream.rb', line 67



def collect_tokens
  @token_stream = []
end


  








  

    #pop_token  
  



  

    

Remove the last token from the collected tokens


  



  [ GitHub ]


  

  


# File 'lib/rdoc/token_stream.rb', line 76



def pop_token
  @token_stream.pop
end


  








  

    #start_collecting_tokens  
  



  

    

Alias for #collect_tokens.


  



  [ GitHub ]


  

  


# File 'lib/rdoc/token_stream.rb', line 71



alias start_collecting_tokens collect_tokens


  








  

    #token_stream  
  



  

    

Current token stream


  



  [ GitHub ]


  

  


# File 'lib/rdoc/token_stream.rb', line 83



def token_stream
  @token_stream
end


  








  

    #tokens_to_s  
  



  

    

Returns a string representation of the token stream


  



  [ GitHub ]


  

  


# File 'lib/rdoc/token_stream.rb', line 90



def tokens_to_s
  token_stream.compact.map { |token| token.text }.join ''
end