Class: ERB::Compiler

Inherits:
Object show all
Defined in:
lib/framework/erb.rb

Overview

:nodoc:

Defined Under Namespace

Classes: Buffer, PercentLine, Scanner, SimpleScanner, TrimScanner

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(trim_mode) ⇒ Compiler

Returns a new instance of Compiler.



641
642
643
644
645
646
647
 
# File 'lib/framework/erb.rb', line 641

def initialize(trim_mode)
  @percent, @trim_mode = prepare_trim_mode(trim_mode)
  @put_cmd = 'print'
  @insert_cmd = @put_cmd
  @pre_cmd = []
  @post_cmd = []
end

Instance Attribute Details

#insert_cmd ⇒ Object

Returns the value of attribute insert_cmd.



649
650
651
 
# File 'lib/framework/erb.rb', line 649

def insert_cmd
  @insert_cmd
end

#percent ⇒ Object (readonly)

Returns the value of attribute percent.



648
649
650
 
# File 'lib/framework/erb.rb', line 648

def percent
  @percent
end

#post_cmd ⇒ Object

Returns the value of attribute post_cmd.



649
650
651
 
# File 'lib/framework/erb.rb', line 649

def post_cmd
  @post_cmd
end

#pre_cmd ⇒ Object

Returns the value of attribute pre_cmd.



649
650
651
 
# File 'lib/framework/erb.rb', line 649

def pre_cmd
  @pre_cmd
end

#put_cmd ⇒ Object

Returns the value of attribute put_cmd.



649
650
651
 
# File 'lib/framework/erb.rb', line 649

def put_cmd
  @put_cmd
end

#trim_mode ⇒ Object (readonly)

Returns the value of attribute trim_mode.



648
649
650
 
# File 'lib/framework/erb.rb', line 648

def trim_mode
  @trim_mode
end

Instance Method Details

#compile(s) ⇒ Object

Raises:

  • (ArgumentError) 


548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
 
# File 'lib/framework/erb.rb', line 548

def compile(s)
  enc = s.encoding
  raise ArgumentError, "#{enc} is not ASCII compatible" if enc.dummy?
  #s = s.dup.force_encoding("utf-8") # don't use constant Enoding::ASCII_8BIT for miniruby
  #enc = detect_magic_comment(s) || enc
  out = Buffer.new(self, enc)

  content = ''
  scanner = make_scanner(s)
  scanner.scan do |token|
    next if token.nil? 
    next if token == ''
	if scanner.stag.nil?
	  case token
      when PercentLine
 out.push("#{@put_cmd} #{content_dump(content)}") if content.size > 0
 content = ''
        out.push(token.to_s)
        out.cr
	  when :cr
 out.cr
	  when '<%', '<%=', '<%#'
 scanner.stag = token
 out.push("#{@put_cmd} #{content_dump(content)}") if content.size > 0
 content = ''
	  when "\n"
 content << "\n"
 out.push("#{@put_cmd} #{content_dump(content)}")
 content = ''
	  when '<%%'
 content << '<%'
	  else
 content << token
	  end
	else
	  case token
	  when '%>'
 case scanner.stag
 when '<%'
   if content[-1] == ?\n
		content.chop!
		out.push(content)
		out.cr
   else
		out.push(content)
   end
 when '<%='
   out.push("#{@insert_cmd}((#{content}).to_s)")
 when '<%#'
   # out.push("# #{content_dump(content)}")
 end
 scanner.stag = nil
 content = ''
	  when '%%>'
 content << '%>'
	  else
 content << token
	  end
	end
  end
  out.push("#{@put_cmd} #{content_dump(content)}") if content.size > 0
  out.close
  return out.script, enc
end

#content_dump(s) ⇒ Object 



539
540
541
542
543
544
545
546
 
# File 'lib/framework/erb.rb', line 539

def content_dump(s)
  n = s.count("\n")
  if n > 0
    s.dump + "\n" * n
  else
    s.dump
  end
end

#make_scanner(src) ⇒ Object 



637
638
639
 
# File 'lib/framework/erb.rb', line 637

def make_scanner(src)
  Scanner.make_scanner(src, @trim_mode, @percent)
end

#prepare_trim_mode(mode) ⇒ Object 



613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
 
# File 'lib/framework/erb.rb', line 613

def prepare_trim_mode(mode)
  case mode
  when 1
	return [false, '>']
  when 2
	return [false, '<>']
  when 0
	return [false, nil]
  when String
	perc = mode.include?('%')
	if mode.include?('-')
	  return [perc, '-']
	elsif mode.include?('<>')
	  return [perc, '<>']
	elsif mode.include?('>')
	  return [perc, '>']
	else
	  [perc, nil]
	end
  else
	return [false, nil]
  end
end