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Add a cache for lexers.Get

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```
name                            old time/op    new time/op    delta
Codeblocks/Default-10              152ms ±11%      12ms ± 1%  -92.44%  (p=0.029 n=4+4)
Codeblocks/Hook_no_higlight-10     142ms ± 0%       7ms ± 0%  -95.36%  (p=0.029 n=4+4)

name                            old alloc/op   new alloc/op   delta
Codeblocks/Default-10             11.9MB ± 0%    11.7MB ± 0%   -1.59%  (p=0.029 n=4+4)
Codeblocks/Hook_no_higlight-10    4.62MB ± 1%    4.43MB ± 0%   -4.08%  (p=0.029 n=4+4)

name                            old allocs/op  new allocs/op  delta
Codeblocks/Default-10               209k ± 0%      209k ± 0%   -0.03%  (p=0.029 n=4+4)
Codeblocks/Hook_no_higlight-10     68.4k ± 0%     68.3k ± 0%   -0.06%  (p=0.029 n=4+4)

```
This commit is contained in:
Bjørn Erik Pedersen
2022-11-24 12:13:19 +01:00
parent 34d1150d92
commit 7855b47f07
5 changed files with 58 additions and 7 deletions
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4
hugolib/page__per_output.go
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@@ -33,10 +33,10 @@ import (
"github.com/spf13/cast"
"github.com/gohugoio/hugo/markup/converter/hooks"
"github.com/gohugoio/hugo/markup/highlight/chromalexers"
"github.com/gohugoio/hugo/markup/converter"
"github.com/alecthomas/chroma/v2/lexers"
"github.com/gohugoio/hugo/lazy"
bp "github.com/gohugoio/hugo/bufferpool"
@@ -545,7 +545,7 @@ func (p *pageContentOutput) initRenderHooks() error {
layoutDescriptor.Kind = "render-codeblock"
if id != nil {
lang := id.(string)
lexer := lexers.Get(lang)
lexer := chromalexers.Get(lang)
if lexer != nil {
layoutDescriptor.KindVariants = strings.Join(lexer.Config().Aliases, ",")
} else {