class Tailor::Rulers::AllowUnnecessaryDoubleQuotesRuler

Public Class Methods

new(config, options) click to toggle source
Calls superclass method Tailor::Ruler::new
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 6
def initialize(config, options)
  super(config, options)
  add_lexer_observers :nl
end

Public Instance Methods

measure(lineno, column) click to toggle source

Checks to see if the double_quotes are unnecessary.

@param [Fixnum] lineno Line the problem was found on. @param [Fixnum] column Column the problem was found on.

# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 24
def measure(lineno, column)
  @problems << Problem.new('unnecessary_double_quotes', lineno, column,
    "Unnecessary double quotes at column #{column}, " +
      'expected single quotes.', @options[:level])
end
nl_update(lexed_line, lineno, _) click to toggle source
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 11
def nl_update(lexed_line, lineno, _)
  quotes(lexed_line).each do |quote|
    unless contains_embedded_expression?(quote) ||
      contains_escape_sequence?(quote)
      measure(lineno, column(quote.first))
    end
  end
end

Private Instance Methods

column(token) click to toggle source
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 48
def column(token)
  token[0][1]
end
contains_embedded_expression?(tokens) click to toggle source
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 32
def contains_embedded_expression?(tokens)
  tokens.any? { |t| t[1] == :on_embexpr_beg }
end
contains_escape_sequence?(tokens) click to toggle source
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 36
def contains_escape_sequence?(tokens)
  tokens.any? do |t|
    t[1] == :on_tstring_content and t[2].match(/\\[a-z]+/)
  end
end
double_quote_end?(token) click to toggle source
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 56
def double_quote_end?(token)
  token[1] == :on_tstring_end and token[2] == '"'
end
double_quote_start?(token) click to toggle source
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 52
def double_quote_start?(token)
  token[1] == :on_tstring_beg and token[2] == '"'
end
quotes(tokens) click to toggle source
# File lib/tailor/rulers/allow_unnecessary_double_quotes_ruler.rb, line 42
def quotes(tokens)
  tokens.select do |t|
    true if (double_quote_start?(t))..(double_quote_end?(t))
  end.slice_before { |t| double_quote_start?(t) }.reject { |q| q.empty? }
end