Module: SqlBeautifier::InList

Defined in:
lib/sql_beautifier/in_list.rb

Constant Summary collapse

IN_KEYWORD =
"in"
NOT_IN_KEYWORD =
"not in"
SUBQUERY_PATTERN =
%r{\A[[:space:]]*select(?:[[:space:]]|\()}i

Class Method Summary collapse

Class Method Details

.format_in_text(text, base_indent: 0) ⇒ Object



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# File 'lib/sql_beautifier/in_list.rb', line 11

def format_in_text(text, base_indent: 0)
  output = +""
  scanner = Scanner.new(text)

  while scanner.position < text.length
    consumed = scanner.scan_quoted_or_sentinel!
    if consumed
      output << consumed
      next
    end

    if scanner.current_char == Constants::OPEN_PARENTHESIS
      scanner.increment_depth!
      output << scanner.current_char
      scanner.advance!
      next
    end

    if scanner.current_char == Constants::CLOSE_PARENTHESIS
      scanner.decrement_depth!
      output << scanner.current_char
      scanner.advance!
      next
    end

    if scanner.parenthesis_depth.zero? && in_keyword_at?(scanner)
      keyword_length = in_keyword_length_at(scanner)
      parenthesis_position = find_opening_parenthesis(text, scanner.position + keyword_length)

      if parenthesis_position
        expansion = format_in_list(text, keyword_position: scanner.position, parenthesis_position: parenthesis_position, base_indent: base_indent)

        if expansion
          output << expansion[:text]
          scanner.advance!(expansion[:consumed] - scanner.position)
          next
        end
      end
    end

    output << scanner.current_char
    scanner.advance!
  end

  output
end