| commit | fe1afe8d4ca06c56f583a9296282697f39d27d97 | [log] [tgz] |
|---|---|---|
| author | Daniel Martí <mvdan@mvdan.cc> | Sun Nov 25 00:24:20 2018 +0000 |
| committer | Daniel Martí <mvdan@mvdan.cc> | Mon Apr 22 15:07:38 2019 +0000 |
| tree | 4e526becf7c12061dfbbfdb0eee31fee1cc9f645 | |
| parent | d17d41e58d2f69d284398f1d86d93c0f31648b16 [diff] |
encoding/json: avoid work when unquoting strings We can work out how many bytes can be unquoted trivially in rescanLiteral, which already iterates over a string's bytes. Removing the extra loop in unquoteBytes simplifies the function and speeds it up, especially when decoding simple strings, which are common. While at it, we can remove unnecessary checks like len(s)<2 and s[0]=='"'. Add a comment explaining why. name old time/op new time/op delta CodeDecoder-8 11.2ms ± 0% 11.1ms ± 1% -1.63% (p=0.000 n=9+10) name old speed new speed delta CodeDecoder-8 173MB/s ± 0% 175MB/s ± 1% +1.66% (p=0.000 n=9+10) Updates #28923. Change-Id: I2436a3a7f8148a2f7a6a4cdbd7dec6b32ef5e20c Reviewed-on: https://go-review.googlesource.com/c/go/+/151157 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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