class Tailor::Rulers::SpacesBeforeRparenRuler
Checks for spaces before a +)+ as given by +@config+. It skips checking when:
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it's the first char in the line.
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it's directly preceded by a +(+.
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it's directly preceded by spaces, then a +(+.
Public Class Methods
Tailor::Ruler::new
# File lib/tailor/rulers/spaces_before_rparen_ruler.rb, line 12 def initialize(config, options) super(config, options) add_lexer_observers :rparen end
Public Instance Methods
@param [LexedLine] lexed_line @param [Fixnum] column @return [Fixnum] the number of spaces before the rparen.
# File lib/tailor/rulers/spaces_before_rparen_ruler.rb, line 20 def count_spaces(lexed_line, column) current_index = lexed_line.event_index(column) log "Current event index: #{current_index}" previous_event = lexed_line.at(current_index - 1) log "Previous event: #{previous_event}" if column.zero? || previous_event.nil? || previous_event[1] == :on_lparen return nil end return 0 if previous_event[1] != :on_sp return nil if current_index - 2 < 0 second_previous_event = lexed_line.at(current_index - 2) return nil if second_previous_event[1] == :on_lparen previous_event.last.size end
Checks to see if the counted spaces before an rparen equals the value at +@config+.
@param [Fixnum] actual_spaces The number of spaces before the rparen. @param [Fixnum] lineno Line the potential problem is on. @param [Fixnum] column Column the potential problem is on.
# File lib/tailor/rulers/spaces_before_rparen_ruler.rb, line 46 def measure(actual_spaces, lineno, column) if actual_spaces != @config msg = "Line has #{actual_spaces} space(s) before a ), " msg << "but should have #{@config}." @problems << Problem.new(problem_type, lineno, column, msg, @options[:level]) end end
This has to keep track of +{+s and only follow through with the check if the +{+ was an lbrace because Ripper doesn't scan the +}+ of an embedded expression (embexpr_end) as such.
@param [Tailor::LexedLine] lexed_line @param [Fixnum] lineno @param [Fixnum] column
# File lib/tailor/rulers/spaces_before_rparen_ruler.rb, line 63 def rparen_update(lexed_line, lineno, column) count = count_spaces(lexed_line, column) if count.nil? log 'rparen must be at the beginning of the line.' return else log "Found #{count} space(s) before rparen." end measure(count, lineno, column) end