Sha256: 087d1ca5720ebab04bb0ecd9589950647683d2d2596d28d8dbabbbca5cf319f8
Contents?: true
Size: 955 Bytes
Versions: 126
Compression:
Stored size: 955 Bytes
Contents
# frozen_string_literal: true
require "concurrent/map"
class ReeObject::IsBlank
include Ree::FnDSL
fn :is_blank
BLANK_RE = /\A[[:space:]]*\z/
ENCODED_BLANKS = Concurrent::Map.new do |h, enc|
h[enc] = Regexp.new(BLANK_RE.source.encode(enc), BLANK_RE.options | Regexp::FIXEDENCODING)
end
doc(<<~DOC)
An object is blank if it's false, empty, or a whitespace string.
For example, +nil+, '', ' ', [], {}, and +false+ are all blank.
DOC
contract(Any => Bool)
def call(obj)
return is_string_blank?(obj) if obj.is_a?(String)
return obj.empty? if obj.is_a?(Array) || obj.is_a?(Hash) || obj.is_a?(Set)
return true if obj.nil?
return true if obj == false
return false if obj == true
false
end
private
def is_string_blank?(str)
str.empty? ||
begin
BLANK_RE.match?(str)
rescue Encoding::CompatibilityError
ENCODED_BLANKS[str.encoding].match?(str)
end
end
end
Version data entries
126 entries across 126 versions & 1 rubygems