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vendor/github.com/klauspost/compress/flate/dict_decoder.go
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vendor/github.com/klauspost/compress/flate/dict_decoder.go
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@ -7,19 +7,19 @@ package flate
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// dictDecoder implements the LZ77 sliding dictionary as used in decompression.
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// LZ77 decompresses data through sequences of two forms of commands:
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//
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// * Literal insertions: Runs of one or more symbols are inserted into the data
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// stream as is. This is accomplished through the writeByte method for a
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// single symbol, or combinations of writeSlice/writeMark for multiple symbols.
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// Any valid stream must start with a literal insertion if no preset dictionary
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// is used.
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// - Literal insertions: Runs of one or more symbols are inserted into the data
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// stream as is. This is accomplished through the writeByte method for a
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// single symbol, or combinations of writeSlice/writeMark for multiple symbols.
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// Any valid stream must start with a literal insertion if no preset dictionary
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// is used.
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//
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// * Backward copies: Runs of one or more symbols are copied from previously
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// emitted data. Backward copies come as the tuple (dist, length) where dist
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// determines how far back in the stream to copy from and length determines how
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// many bytes to copy. Note that it is valid for the length to be greater than
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// the distance. Since LZ77 uses forward copies, that situation is used to
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// perform a form of run-length encoding on repeated runs of symbols.
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// The writeCopy and tryWriteCopy are used to implement this command.
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// - Backward copies: Runs of one or more symbols are copied from previously
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// emitted data. Backward copies come as the tuple (dist, length) where dist
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// determines how far back in the stream to copy from and length determines how
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// many bytes to copy. Note that it is valid for the length to be greater than
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// the distance. Since LZ77 uses forward copies, that situation is used to
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// perform a form of run-length encoding on repeated runs of symbols.
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// The writeCopy and tryWriteCopy are used to implement this command.
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//
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// For performance reasons, this implementation performs little to no sanity
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// checks about the arguments. As such, the invariants documented for each
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