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zeekayandHanzo Dev
aa87442fdd
Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
45 lines
868 B
Go
45 lines
868 B
Go
// Copyright 2026 Hanzo AI, Inc. All rights reserved.
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// SPDX-License-Identifier: MIT
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package regexplru
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import (
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"regexp"
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"github.com/hanzoai/git/modules/log"
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lru "github.com/hashicorp/golang-lru/v2"
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)
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var lruCache *lru.Cache[string, any]
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func init() {
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var err error
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lruCache, err = lru.New[string, any](1000)
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if err != nil {
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log.Fatal("failed to new LRU cache, err: %v", err)
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}
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}
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// GetCompiled works like regexp.Compile, the compiled expr or error is stored in LRU cache
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func GetCompiled(expr string) (r *regexp.Regexp, err error) {
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v, ok := lruCache.Get(expr)
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if !ok {
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r, err = regexp.Compile(expr)
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if err != nil {
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lruCache.Add(expr, err)
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return nil, err
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}
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lruCache.Add(expr, r)
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} else {
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r, ok = v.(*regexp.Regexp)
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if !ok {
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if err, ok = v.(error); ok {
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return nil, err
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}
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panic("impossible")
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}
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}
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return r, nil
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}
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