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File Name : ruby_tools.rb

# frozen_string_literal: true
##
# Collection of methods for writing parsers

module RDoc::Parser::RubyTools

##
  # Adds a token listener +obj+, but you should probably use token_listener

def add_token_listener(obj)
    @token_listeners ||= []
    @token_listeners << obj
  end

##
  # Fetches the next token from the scanner

def get_tk
    tk = nil

if @tokens.empty? then
      if @scanner_point >= @scanner.size
        return nil
      else
        tk = @scanner[@scanner_point]
        @scanner_point += 1
        @read.push tk[:text]
      end
    else
      @read.push @unget_read.shift
      tk = @tokens.shift
    end

if tk == nil || :on___end__ == tk[:kind]
      tk = nil
    end

return nil unless tk

# inform any listeners of our shiny new token
    @token_listeners.each do |obj|
      obj.add_token(tk)
    end if @token_listeners

tk
  end

##
  # Reads and returns all tokens up to one of +tokens+.  Leaves the matched
  # token in the token list.

def get_tk_until(*tokens)
    read = []

loop do
      tk = get_tk

case tk
      when *tokens then
        unget_tk tk
        break
      end

read << tk
    end

read
  end

##
  # Retrieves a String representation of the read tokens

def get_tkread
    read = @read.join("")
    @read = []
    read
  end

##
  # Peek equivalent for get_tkread

def peek_read
    @read.join('')
  end

##
  # Peek at the next token, but don't remove it from the stream

def peek_tk
    unget_tk(tk = get_tk)
    tk
  end

##
  # Removes the token listener +obj+

def remove_token_listener(obj)
    @token_listeners.delete(obj)
  end

##
  # Resets the tools

def reset
    @read       = []
    @tokens     = []
    @unget_read = []
    @nest = 0
    @scanner_point = 0
  end

##
  # Skips whitespace tokens including newlines

def skip_tkspace
    tokens = []

while (tk = get_tk) and (:on_sp == tk[:kind] or :on_nl == tk[:kind] or :on_ignored_nl == tk[:kind]) do
      tokens.push(tk)
    end

unget_tk(tk)
    tokens
  end

##
  # Skips whitespace tokens excluding newlines

def skip_tkspace_without_nl
    tokens = []

while (tk = get_tk) and :on_sp == tk[:kind] do
      tokens.push(tk)
    end

unget_tk(tk)
    tokens
  end

##
  # Has +obj+ listen to tokens

def token_listener(obj)
    add_token_listener obj
    yield
  ensure
    remove_token_listener obj
  end

##
  # Returns +tk+ to the scanner

def unget_tk(tk)
    @tokens.unshift tk
    @unget_read.unshift @read.pop

# Remove this token from any listeners
    @token_listeners.each do |obj|
      obj.pop_token
    end if @token_listeners

nil
  end

end

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2024-04-17 01:06:34
..	dir	-	root/root	0755	2024-04-17 01:06:34
c.rb	text/x-ruby	35.57 KB	root/root	0644	2023-03-30 12:34:08
changelog.rb	text/x-ruby	4.93 KB	root/root	0644	2023-03-30 12:34:08
markdown.rb	text/x-ruby	474 B	root/root	0644	2023-03-30 12:34:08
rd.rb	text/x-ruby	438 B	root/root	0644	2023-03-30 12:34:08
ripper_state_lex.rb	text/x-ruby	15.7 KB	root/root	0644	2023-03-30 12:34:08
ruby.rb	text/x-ruby	58.45 KB	root/root	0644	2023-03-30 12:34:08
ruby_tools.rb	text/x-ruby	2.63 KB	root/root	0644	2023-03-30 12:34:08
simple.rb	text/x-ruby	1.42 KB	root/root	0644	2023-03-30 12:34:08
text.rb	text/x-ruby	307 B	root/root	0644	2023-03-30 12:34:08

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