class Tailor::Rulers::SpacesBeforeLbraceRuler
Detects 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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the char before it is a '#{'.
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the char before it is a '('.
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the char before it is a '['.
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it's only preceded by spaces.
Public Class Methods
Tailor::Ruler::new
# File lib/tailor/rulers/spaces_before_lbrace_ruler.rb, line 13 def initialize(config, options) super(config, options) add_lexer_observers :lbrace end
Public Instance Methods
Counts the spaces before the '{'.
@param [LexedLine] lexed_line @param [Fixnum] column @return [Fixnum] The number of spaces before the lbrace.
# File lib/tailor/rulers/spaces_before_lbrace_ruler.rb, line 23 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? log 'lbrace must be at the beginning of the line.' @do_measurement = false return 0 end if previous_event[1] == :on_embexpr_beg log "lbrace comes after a '\#{'." @do_measurement = false return 0 end if previous_event[1] == :on_lparen log "lbrace comes after a '('." @do_measurement = false return 0 end if previous_event[1] == :on_lbracket log "lbrace comes after a '['." @do_measurement = false return 0 end return 0 if previous_event[1] != :on_sp if current_index - 2 < 0 log 'lbrace comes at the beginning of an indented line.' @do_measurement = false return previous_event.last.size end previous_event.last.size end
Called by {Lexer} when :on_lbrace is encountered.
@param [LexedLine] lexed_line @param [Fixnum] lineno @param [Fixnum] column
# File lib/tailor/rulers/spaces_before_lbrace_ruler.rb, line 69 def lbrace_update(lexed_line, lineno, column) count = count_spaces(lexed_line, column) log "Found #{count} space(s) before lbrace." if !@do_measurement log 'Skipping measurement.' else measure(count, lineno, column) end @do_measurement = true end
Checks to see if the counted spaces before an lbrace equals the value at +@config+.
@param [Fixnum] actual_spaces The number of spaces before the lbrace. @param [Fixnum] lineno Line the potential problem is on. @param [Fixnum] column Column the potential problem is on.
# File lib/tailor/rulers/spaces_before_lbrace_ruler.rb, line 88 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