Package it.unimi.dsi.sux4j.mph.codec
Class Codec.ZeroCodec.Coder
java.lang.Object
it.unimi.dsi.sux4j.mph.codec.Codec.ZeroCodec.Coder
- All Implemented Interfaces:
Codec.Coder
- Enclosing class:
- Codec.ZeroCodec
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Nested Class Summary
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionint
codewordLength
(long symbol) Returns the length of the codeword associated with the given symbol.long
encode
(long symbol) Returns the codeword associated with a symbol, or −1 if the provided symbol should be escaped.Return a decoder associated with this coder.int
Returns the maximum length of a codeword (including escaped symbols).Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface it.unimi.dsi.sux4j.mph.codec.Codec.Coder
escape, escapedSymbolLength
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Constructor Details
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Coder
protected Coder()
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Method Details
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encode
public long encode(long symbol) Description copied from interface:Codec.Coder
Returns the codeword associated with a symbol, or −1 if the provided symbol should be escaped.If a symbol needs to be escaped, it must be encoded using the escape codeword followed by the symbol written in a field of
Codec.Coder.escapedSymbolLength()
bits.- Specified by:
encode
in interfaceCodec.Coder
- Parameters:
symbol
- a symbol.- Returns:
- the associated codeword.
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codewordLength
public int codewordLength(long symbol) Description copied from interface:Codec.Coder
Returns the length of the codeword associated with the given symbol.For escaped symbols, the returned values is the length of the escape codeword plus
Codec.Coder.escapedSymbolLength()
.- Specified by:
codewordLength
in interfaceCodec.Coder
- Parameters:
symbol
- a symbol provided at construction time.- Returns:
- the length of the codeword associated with the given symbol.
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maxCodewordLength
public int maxCodewordLength()Description copied from interface:Codec.Coder
Returns the maximum length of a codeword (including escaped symbols).- Specified by:
maxCodewordLength
in interfaceCodec.Coder
- Returns:
- the maximum length of a codeword (including escaped symbols).
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getDecoder
Description copied from interface:Codec.Coder
Return a decoder associated with this coder.- Specified by:
getDecoder
in interfaceCodec.Coder
- Returns:
- a decoder associated with this coder.
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