class SCSSLint::Linter::TrailingZero

Checks for unnecessary trailing zeros in numeric values with decimal points.

Constants

FRACTIONAL_DIGIT_REGEX

Public Instance Methods

visit_script_number(node) click to toggle source
# File lib/scss_lint/linter/trailing_zero.rb, line 16
def visit_script_number(node)
  return unless number =
    source_from_range(node.source_range)[FRACTIONAL_DIGIT_REGEX, 1]

  check_for_trailing_zeros(node, number)
end
visit_script_string(node) click to toggle source
# File lib/scss_lint/linter/trailing_zero.rb, line 6
def visit_script_string(node)
  return unless node.type == :identifier

  non_string_values = remove_quoted_strings(node.value).split
  non_string_values.each do |value|
    next unless number = value[FRACTIONAL_DIGIT_REGEX, 1]
    check_for_trailing_zeros(node, number)
  end
end

Private Instance Methods

check_for_trailing_zeros(node, original_number) click to toggle source
# File lib/scss_lint/linter/trailing_zero.rb, line 27
def check_for_trailing_zeros(node, original_number)
  return unless match = /^(\d*\.\d*)0+$/.match(original_number)

  fixed_number = match[1]

  # Handle special case of 0 being the only trailing digit
  fixed_number = fixed_number[0..-2] if fixed_number.end_with?('.')
  fixed_number = 0 if fixed_number.empty? # Handle ".0" -> "0"

  add_lint(node,
           "`#{original_number}` should be written without a trailing " \
           "zero as `#{fixed_number}`")
end