Class: LanguageParser::CT_OldComment

Inherits:
CT_State
  • Object
show all
Defined in:
lib/cgialib/lp/CTokenizer.rb

Overview

class : CT_OldComment

Handles parsing an old-style C comment (e.g. /* … */ )

Instance Method Summary collapse

Constructor Details

#initialize(newstate, addtoken) ⇒ CT_OldComment

initialize( newstate, addtoken )

newstate - A method to be called to change state addtoken - The method to be called to add a token

Intializes the old-style comment state object



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# File 'lib/cgialib/lp/CTokenizer.rb', line 65

def initialize( newstate, addtoken )
  
  super( newstate, addtoken )
  
  # Initialize the text with the beginning /*
  
  @text = "/*"
  
  # True if the last character was a star
  
  @last_was_star = false
  
end

Instance Method Details

#next(ch) ⇒ Object

next( ch )

ch - The character

Handles the character in the parsing stream



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# File 'lib/cgialib/lp/CTokenizer.rb', line 85

def next( ch )
  
  # Add this character to the comment
  
  @text += ch
  
  # See if we have a '/' if the last character was a star.
  # If that is the case then return to normal parsing
  # and add the comment token to the token array.
  
  if ( ch == "/" && @last_was_star )
  
    @addtoken.call( CommentToken.new( @text ) )
    @newstate.call( CT_NormalState )
  
  end
  
  # Set the last_was_star to true if we see a star
  
  @last_was_star = ( ch == "*" )
  
  # Continue onto the next character
  
  true
  
end