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go / go / 24a088d20ad52c527f61b34217da72589e366833
commit24a088d20ad52c527f61b34217da72589e366833[log] [tgz]
authorRob Pike <r@golang.org>Tue Nov 08 15:43:20 2016 -0800
committerRob Pike <r@golang.org>Tue Nov 15 00:42:33 2016 +0000
tree5400091cdd90194a3ebf2631349fa481f4b64926
parentbb00a8d97faa70bf7a1cbdd4a43e95347a9c8709 [diff]
text/template: efficient reporting of line numbers

Instead of scanning the text to count newlines, which is n², keep track as we go
and store the line number in the token.

benchmark                 old ns/op      new ns/op     delta
BenchmarkParseLarge-4     1589721293     38783310      -97.56%

Fixes #17851

Change-Id: I231225c61e667535e2ce55cd2facea6d279cc59d
Reviewed-on: https://go-review.googlesource.com/33234
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
5 files changed
tree: 5400091cdd90194a3ebf2631349fa481f4b64926
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
README.md

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