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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
tpl/transform/transform.go
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@@ -18,10 +18,10 @@ import (
"html"
"html/template"
"github.com/alecthomas/chroma/v2/lexers"
"github.com/gohugoio/hugo/cache/namedmemcache"
"github.com/gohugoio/hugo/markup/converter/hooks"
"github.com/gohugoio/hugo/markup/highlight"
"github.com/gohugoio/hugo/markup/highlight/chromalexers"
"github.com/gohugoio/hugo/tpl"
"github.com/gohugoio/hugo/deps"
@@ -93,7 +93,7 @@ func (ns *Namespace) HighlightCodeBlock(ctx hooks.CodeblockContext, opts ...any)
// CanHighlight returns whether the given code language is supported by the Chroma highlighter.
func (ns *Namespace) CanHighlight(language string) bool {
return lexers.Get(language) != nil
return chromalexers.Get(language) != nil
}
// HTMLEscape returns a copy of s with reserved HTML characters escaped.