cache/compressors/cpack.hh

38  * function isPattern(), to determine if the data fits the pattern, and a
39  * decompress() function, which decompresses the contents of a pattern.
40  * Every new pattern must inherit from the Pattern class and be added to the
76      * Create a factory to determine if input matches a pattern. The if else
87             // If match this pattern, instantiate it. If a negative match
94             // Otherwise, go for next pattern
112             // Instantiate last pattern. Should be the XXXX pattern.
145      * Number of data entries that were compressed to each pattern.
157      * @return The pattern this data matches.
164      * @param pattern The pattern to be decompressed.
167     uint32_t decompressWord(const Pattern* pattern);
214  * The compressed data is composed of multiple pattern entries. To add a new
215  * pattern one should inherit from this class and implement isPattern() and
216  * decompress. Then the new pattern must be added to the PatternFactory
217  * declaration in crescent order of size (in the CPack class). The pattern
228      * These are used as indexes to reference the pattern data. If a new
229      * pattern is added, it must be done before NUM_PATTERNS.
241      * Code associated to the pattern.
261      * Wether the pattern allocates a dictionary entry or not.
266      * Get code of this pattern.
277      * @param code Code associated to this pattern.
302      * Get enum number associated to this pattern.
304      * @return The pattern enum number.
309      * Get meta-name assigned to the given pattern.
311      * @param number The number of the pattern.
312      * @return The meta-name of the pattern.
332      * Get size, in bits, of the pattern (excluding prefix). Corresponds to
342      * Determine if pattern allocates a dictionary entry.
351         return csprintf("pattern %s (encoding %x, size %u bits)",
356      * Decompress the pattern. Each pattern has its own way of interpreting
360      * @param data The decompressed pattern.
458         // discarding MMXM. If that pattern is added this should be modified