47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
// © 2019 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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// ulayout_props.h
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// created: 2019feb12 Markus W. Scherer
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#ifndef __ULAYOUT_PROPS_H__
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#define __ULAYOUT_PROPS_H__
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#include "unicode/utypes.h"
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// file definitions ------------------------------------------------------------
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#define ULAYOUT_DATA_NAME "ulayout"
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#define ULAYOUT_DATA_TYPE "icu"
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// data format "Layo"
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#define ULAYOUT_FMT_0 0x4c
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#define ULAYOUT_FMT_1 0x61
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#define ULAYOUT_FMT_2 0x79
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#define ULAYOUT_FMT_3 0x6f
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// indexes into indexes[]
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enum {
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// Element 0 stores the length of the indexes[] array.
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ULAYOUT_IX_INDEXES_LENGTH,
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// Elements 1..7 store the tops of consecutive code point tries.
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// No trie is stored if the difference between two of these is less than 16.
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ULAYOUT_IX_INPC_TRIE_TOP,
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ULAYOUT_IX_INSC_TRIE_TOP,
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ULAYOUT_IX_VO_TRIE_TOP,
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ULAYOUT_IX_RESERVED_TOP,
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ULAYOUT_IX_TRIES_TOP = 7,
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ULAYOUT_IX_MAX_VALUES = 9,
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// Length of indexes[]. Multiple of 4 to 16-align the tries.
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ULAYOUT_IX_COUNT = 12
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};
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constexpr int32_t ULAYOUT_MAX_INPC_SHIFT = 24;
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constexpr int32_t ULAYOUT_MAX_INSC_SHIFT = 16;
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constexpr int32_t ULAYOUT_MAX_VO_SHIFT = 8;
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#endif // __ULAYOUT_PROPS_H__
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