mirror of
https://github.com/gohugoio/hugo.git
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7855b47f07
``` 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) ```
51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
// Copyright 2022 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package chromalexers
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import (
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"sync"
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"github.com/alecthomas/chroma/v2"
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"github.com/alecthomas/chroma/v2/lexers"
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)
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type lexersMap struct {
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lexers map[string]chroma.Lexer
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mu sync.RWMutex
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}
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var lexerCache = &lexersMap{lexers: make(map[string]chroma.Lexer)}
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// Get returns a lexer for the given language name, nil if not found.
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// This is just a wrapper around chromalexers.Get that caches the result.
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// Reasoning for this is that chromalexers.Get is slow in the case where the lexer is not found,
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// which is a common case in Hugo.
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func Get(name string) chroma.Lexer {
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lexerCache.mu.RLock()
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lexer, found := lexerCache.lexers[name]
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lexerCache.mu.RUnlock()
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if found {
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return lexer
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}
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lexer = lexers.Get(name)
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lexerCache.mu.Lock()
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lexerCache.lexers[name] = lexer
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lexerCache.mu.Unlock()
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return lexer
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}
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