Class: Lazibi::Filter::OptionalEnd

Inherits:
FilterBase show all
Defined in:
lib/filter/optional_end_filter.rb

Instance Method Summary collapse

Methods included from Helper::FilterHelper

#begin_keys, #clean_block, #clean_line, #comment_at_end, #end_anchor?, #end_keys, #get_indent, #get_rest, #group_match, #middle_anchor?, #middle_keys, #nasty_line?, #split_end, #start_anchor?

Instance Method Details

#down(source) ⇒ Object 



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# File 'lib/filter/optional_end_filter.rb', line 42

def down( source )
  content = source
  return '' if content.strip == ''
  lines = content.split("\n")
  first_line = lines.first.strip
  return lines[1..-1].join("\n") if first_line == '#skip_parse'
  insert_end content
end

#find_end(lines, indent) ⇒ Object 



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# File 'lib/filter/optional_end_filter.rb', line 89

def find_end( lines, indent )
  return 0 if lines.size == 1

  anchor = 0

  lines = lines[1..-1]
  lines.each_index do |i|
    l = lines[i]
    next if l.strip == ''
    if l.strip =~ /^#/
      if get_indent(l) > indent
        anchor = i + 1
      end
      next
    end
    return anchor if get_indent(l) < indent
    if get_indent(l) == indent
      rest = get_rest l
      if start_anchor? rest
        return anchor
      elsif end_anchor? rest
        return false
      elsif middle_anchor? rest
        anchor = i + 1
        next
      else
        return anchor
      end
    end
    anchor =  i + 1
  end
  return anchor
end

#insert_end(content) ⇒ Object 



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# File 'lib/filter/optional_end_filter.rb', line 51

def insert_end( content )
  @lines = content.split("\n")
  progress = 0
  while progress < @lines.size
    lines = @lines[progress..-1]
    lines.each_index do |index|
      l = lines[index]
      safe_l = clean_block(clean_line(get_rest(l)))
      if start_anchor? safe_l
        relative_index_for_end = find_end( lines[index..-1], get_indent(l))
        unless relative_index_for_end
          progress += 1
          break
        end
        index_for_end = relative_index_for_end + index

        if relative_index_for_end == 0 && !comment_at_end(l)
          #l = lines[index_for_end]
          lines[index_for_end] = lines[index_for_end].rstrip + '; end'
        else
          lines[index_for_end] = lines[index_for_end] + "\n" +  ' ' * get_indent(l) + "end"
        end
        head = @lines[0...progress]
        tail = lines[index..-1].join("\n").split("\n")

        @lines = head + tail


        progress += 1
        break
      end
      progress += 1
    end
  end

  result = @lines.join("\n")
end

#remove_colon_at_end(l) ⇒ Object 



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# File 'lib/filter/optional_end_filter.rb', line 34

def remove_colon_at_end(l)
  if comment_at_end(l)
    l.sub /(\s*;\s*)(#.*)/, ' \2'
  else
    l.sub /;*$/, ''
  end
end

#up(source) ⇒ Object 



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# File 'lib/filter/optional_end_filter.rb', line 7

def up( source )
  rb = source
  py = []
  lines = rb.split("\n")
  lines.each_index do |index|
    l = lines[index]
    if l.strip =~ /^end$/
      next
    end
    l = remove_colon_at_end(l)

    s = l
    if comment_at_end(l)
      s = s.sub(/(\s*;\s*end*\s*)(#.*)/, ' \2')
      s = s.sub(/(\s+end*\s*)(#.*)/, ' \2')
    else
      s = s.sub(/\s+end\s*$/, '')
      s = remove_colon_at_end(s)
    end

    py << s
  end

  py.join("\n")
end