public final Class CollationFastLatin

Contraction result first word bits 8..0 contain the second contraction character, as a char index 0..NUM_FAST_CHARS-1. Each contraction list is terminated with a word containing CONTR_CHAR_MASK.

Contraction result first word bits 10..9 contain the result length: 1=bail out, 2=one mini CE, 3=two mini CEs

Contraction with one fast Latin character. Use INDEX_MASK to find the start of the contraction list after the fixed table. The first entry contains the default mapping. Otherwise use CONTR_CHAR_MASK for the contraction character index (in ascending order). Use CONTR_LENGTH_SHIFT for the length of the entry (1=BAIL_OUT, 2=one CE, 3=two CEs). Also, U+0000 maps to a contraction entry, so that the fast path need not check for NUL termination. It usually maps to a contraction list with only the completely ignorable default value.

An expansion encodes two CEs. Use INDEX_MASK to find the pair of CEs after the fixed table. The higher a mini CE value, the easier it is to process. For expansions and higher, no context needs to be considered.

The highest primary weight is reserved for U+FFFF.

Encodes one CE with a long/low mini primary (there are 128). All potentially-variable primaries must be in this range, to make the short-primary path as fast as possible.

Encodes one CE with a short/high primary (there are 60), plus a secondary CE if the secondary weight is high. Fast handling: At least all letter primaries should be in this range.

Lookup: Add this offset to secondary weights, except for completely ignorable CEs. Must be greater than any special value, e.g., MERGE_WEIGHT. The exact value is not relevant for the format version.

Lookup: Add this offset to tertiary weights, except for completely ignorable CEs. Must be greater than any special value, e.g., MERGE_WEIGHT. Must be greater than case bits as well, so that with combined case+tertiary weights plus the offset the tertiary bits does not spill over into the case bits. The exact value is not relevant for the format version.