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Use encoding cache

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This commit is contained in:
Douglas Eichelberger 2023-11-26 15:36:02 -08:00
parent ff43ec2793
commit 410fc64b7b
1 changed files with 7 additions and 1 deletions
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8
Library/Homebrew/extend/blank.rb
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@ -133,6 +133,12 @@ end
class String class String
BLANK_RE = /\A[[:space:]]*\z/.freeze BLANK_RE = /\A[[:space:]]*\z/.freeze
# This is a cache that is intentionally mutable
# rubocop:disable Style/MutableConstant
ENCODED_BLANKS_ = T.let(Hash.new do |h, enc|
h[enc] = Regexp.new(BLANK_RE.source.encode(enc), BLANK_RE.options | Regexp::FIXEDENCODING)
end, T::Hash[Encoding, Regexp])
# rubocop:enable Style/MutableConstant
# A string is blank if it's empty or contains whitespaces only: # A string is blank if it's empty or contains whitespaces only:
# #
@ -153,7 +159,7 @@ class String
begin begin
BLANK_RE.match?(self) BLANK_RE.match?(self)
rescue Encoding::CompatibilityError rescue Encoding::CompatibilityError
Regexp.new(BLANK_RE.source.encode(encoding), BLANK_RE.options | Regexp::FIXEDENCODING).match?(self) T.must(ENCODED_BLANKS_[encoding]).match?(self)
end end
end end