Class: RubyLexer::KeepWsTokenPrinter

Inherits:
Object
  • Object
show all
Defined in:
lib/rubylexer/tokenprinter.rb

Overview

Constant Summary collapse

ACCUMSIZE = 
50

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sep = '', line = 1, showzw = 0) ⇒ KeepWsTokenPrinter

Returns a new instance of KeepWsTokenPrinter.



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# File 'lib/rubylexer/tokenprinter.rb', line 107

def initialize(sep='',line=1,showzw=0)
   @sep=sep
   @inws=false
   @lasttok=''
   #@latestline=line
   @lastprintline=0
   @accum=[]
   @showzw=showzw
end

Instance Attribute Details

#inws ⇒ Object

,:latestline



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# File 'lib/rubylexer/tokenprinter.rb', line 102

def inws
  @inws
end

#lastfal ⇒ Object

,:latestline



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# File 'lib/rubylexer/tokenprinter.rb', line 102

def lastfal
  @lastfal
end

#lasttok ⇒ Object

,:latestline



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# File 'lib/rubylexer/tokenprinter.rb', line 102

def lasttok
  @lasttok
end

#showzw ⇒ Object (readonly)

Returns the value of attribute showzw.



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# File 'lib/rubylexer/tokenprinter.rb', line 103

def showzw
  @showzw
end

Instance Method Details

#aprint(tok) ⇒ Object Also known as: sprint 



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# File 'lib/rubylexer/tokenprinter.rb', line 125

def aprint(tok)
   if StringToken===tok or 
       HereBodyToken===tok
#         (HerePlaceholderToken===tok and 
#          tok.bodyclass!=OutlinedHereBodyToken
#         )
         str_needs_escnls=(tok.line-@lastfal.line).nonzero?
   end if false
   result=tok.ws_munge(self) and return result


   #insert extra ws unless an ambiguous op immediately follows
   #id or num, in which case ws would change the meaning
   result=tok
   result=
   case tok
   when ZwToken,EoiToken,NoWsToken, HereBodyToken, NewlineToken,
        ImplicitParamListStartToken,ImplicitParamListEndToken;
     tok
   else
     @sep.dup<<tok.to_s
   end unless NoWsToken===lasttok
   
   if str_needs_escnls
     result=result.to_s
     result.gsub!(/(["`\/])$/){ "\\\n"*str_needs_escnls+$1 }
   end

   @lasttok=tok
   @inws=false

   return result
end

#lastfal_every_10_lines ⇒ Object 



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# File 'lib/rubylexer/tokenprinter.rb', line 161

def lastfal_every_10_lines
   if(@lastprintline+=1) > 10
      @lastprintline=0
      %Q[ #@lastfal]
   end
end

#pprint(tok, output = $stdout) ⇒ Object 



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# File 'lib/rubylexer/tokenprinter.rb', line 117

def pprint(tok,output=$stdout)
   @accum<<aprint(tok).to_s
   if (@accum.size>ACCUMSIZE and NewlineToken===tok) or EoiToken===tok
      output.print(@accum.join)
      @accum=[]
   end
end

#ws_would_change_meaning?(tok, lasttok) ⇒ Boolean

insert extra ws unless an ambiguous op immediately follows id or num, in which case ws would change the meaning

Returns:

  • (Boolean) 


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# File 'lib/rubylexer/tokenprinter.rb', line 171

def ws_would_change_meaning?(tok,lasttok)   #yukk -- is it used?
   tok.kind_of?(String) and
   /^[%(]$/===tok and #is ambiguous operator?
       lasttok and
       (lasttok.kind_of?(Numeric) or
        (lasttok.kind_of?(String) and
         /^[$@a-zA-Z_]/===@lasttok)) #lasttok is id or num?
end