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Edit File : token_stream.rb \| Size : 2.46 KB
## # 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. module RDoc::TokenStream ## # Converts +token_stream+ to HTML wrapping various tokens with # <tt><span></tt> 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. 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 ## # Adds +tokens+ to the collected tokens def add_tokens(*tokens) tokens.flatten.each { \|token\| @token_stream << token } end alias add_token add_tokens ## # Starts collecting tokens def collect_tokens @token_stream = [] end alias start_collecting_tokens collect_tokens ## # Remove the last token from the collected tokens def pop_token @token_stream.pop end ## # Current token stream def token_stream @token_stream end ## # Returns a string representation of the token stream def tokens_to_s token_stream.map { \|token\| token.text }.join '' end end Back

Edit File : token_stream.rb | Size : 2.46 KB

##
# 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.

module RDoc::TokenStream

##
  # Converts +token_stream+ to HTML wrapping various tokens with
  # <tt><span></tt> 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.

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

##
  # Adds +tokens+ to the collected tokens

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

alias add_token add_tokens

##
  # Starts collecting tokens

def collect_tokens
    @token_stream = []
  end

alias start_collecting_tokens collect_tokens

##
  # Remove the last token from the collected tokens

def pop_token
    @token_stream.pop
  end

##
  # Current token stream

def token_stream
    @token_stream
  end

##
  # Returns a string representation of the token stream

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

end

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