ml
22 lines
578 B
Go
22 lines
578 B
Go
package compression
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// dictEntryBucketSizeBits governs how big one bucket in the buffer is.
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const dictEntryBucketSizeBits = 8
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type dictEntryBucket [1 << dictEntryBucketSizeBits]dictEntry
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type dictEntryBuffer struct {
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buckets []*dictEntryBucket
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}
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func (buffer *dictEntryBuffer) entry(key Word) *dictEntry {
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bucketIndex := int(key) >> dictEntryBucketSizeBits
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index := int(key & ((1 << dictEntryBucketSizeBits) - 1))
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for bucketIndex >= len(buffer.buckets) {
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buffer.buckets = append(buffer.buckets, new(dictEntryBucket))
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}
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return &buffer.buckets[bucketIndex][index]
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}
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