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Diffstat (limited to 'lib/prism/polyfill/byteindex.rb')
-rw-r--r-- | lib/prism/polyfill/byteindex.rb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/prism/polyfill/byteindex.rb b/lib/prism/polyfill/byteindex.rb new file mode 100644 index 0000000000..98c6089f14 --- /dev/null +++ b/lib/prism/polyfill/byteindex.rb @@ -0,0 +1,13 @@ +# frozen_string_literal: true + +# Polyfill for String#byteindex, which didn't exist until Ruby 3.2. +if !("".respond_to?(:byteindex)) + String.include( + Module.new { + def byteindex(needle, offset = 0) + charindex = index(needle, offset) + slice(0...charindex).bytesize if charindex + end + } + ) +end |