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files >> //opt/alt/ruby20/lib64/ruby/2.0.0/rdoc/token_stream.rb
## # 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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