Class: LanguageParser::CT_DoubleQuote

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

Overview

class : CT_DoubleQuote

Handles parsing strings

Instance Method Summary collapse

Constructor Details

#initialize(newstate, addtoken) ⇒ CT_DoubleQuote

initialize( newstate, addtoken )

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



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# File 'lib/cgialib/lp/CTokenizer.rb', line 177

def initialize( newstate, addtoken )
  
  super( newstate, addtoken )
  
  # Start the text buffer with the beginning double quote
  
  @text = "\""
  
  # Set the escaped flag to false.  This will go true when
  # we see a '\'
  
  @escaped = 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 198

def next( ch )
  
  # Add this character to the text buffer
  
  @text += ch
  
  # If the character is a double qoute and we are not
  # escape then go back to the normal state and add
  # the string token to the array
  
  if ( ch == "\"" && ! @escaped )
  
    @addtoken.call( CodeToken.new( @text ) )
    @newstate.call( CT_NormalState )
  
  end
  
  # Set escaped to true if we see a    
  @escaped = ( ch == "\\" )
  
  # Proceed to the next character
  
  true
  
end