fix panic on slice when start is greater than end

MiSawa / xq

Pure rust implementation of jq

MIT License

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fix panic on slice when start is greater than end #38

Closed itchyny closed 2 years ago

itchyny commented 2 years ago

This PR fixes slicing when start is greater than end.

❯ jq -n '[1,2,3] | .[2:1]'
[]

❯ xq -n '[1,2,3] | .[2:1]'
thread 'main' panicked at 'slice index starts at 2 but ends at 1', src/intrinsic/index.rs:177:15
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

MiSawa commented 2 years ago

Oops, thanks!