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module SCSSLint
# Checks for the unnecessary inclusion of a zero-value mantissa in numbers.
# (e.g. `4.0` could be written as just `4`)
class Linter::UnnecessaryMantissa < Linter
include LinterRegistry
def visit_script_string(node)
return unless node.type == :identifier
node.value.scan(REAL_NUMBER_REGEX) do |number, integer, mantissa, units|
if unnecessary_mantissa?(mantissa)
add_lint(node, MESSAGE_FORMAT % [number, integer, units])
end
end
end
def visit_script_number(node)
return unless match = REAL_NUMBER_REGEX.match(source_from_range(node.source_range))
return unless unnecessary_mantissa?(match[:mantissa])
add_lint(node, MESSAGE_FORMAT % [match[:number], match[:integer],
match[:units]])
end
private
REAL_NUMBER_REGEX = /
\b(?<number>
(?<integer>\d*)
\.
(?<mantissa>\d+)
(?<units>\w*)
)\b
/ix
MESSAGE_FORMAT = '`%s` should be written without the mantissa as `%s%s`'
def unnecessary_mantissa?(mantissa)
mantissa !~ /[^0]/
end
end
end
Version data entries
25 entries across 25 versions & 3 rubygems