109 lines
3.8 KiB
C
109 lines
3.8 KiB
C
/*
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* Copyright (C) 2016-2019 Muhammad Tayyab Akram
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _SB_INTERNAL_BASE_H
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#define _SB_INTERNAL_BASE_H
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#include <SBBase.h>
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#include <SBBidiType.h>
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#include <SBCodepoint.h>
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#include <SBConfig.h>
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#include <SBGeneralCategory.h>
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#include <SBScript.h>
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/**
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* A value that indicates an invalid unsigned index.
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*/
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#define SBInvalidIndex (SBUInteger)(-1)
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SB_INTERNAL void SBUIntegerNormalizeRange(SBUInteger actualLength,
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SBUInteger *rangeOffset, SBUInteger *rangeLength);
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SB_INTERNAL SBBoolean SBUIntegerVerifyRange(SBUInteger actualLength,
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SBUInteger rangeOffset, SBUInteger rangeLength);
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#define SBNumberGetMax(first, second) \
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( \
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(first) > (second) \
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? (first) \
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: (second) \
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)
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#define SBNumberLimitIncrement(number, limit) \
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( \
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(number) < (limit) \
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? (number) + (1) \
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: (limit) \
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)
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#define SBNumberLimitDecrement(number, limit) \
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( \
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(number) > (limit) \
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? (number) - (1) \
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: (limit) \
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)
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#define SBNumberRingAdd(number, count, capacity) \
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(((number) + (count)) % (capacity))
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#define SBNumberRingIncrement(number, capacity) \
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SBNumberRingAdd(number, 1, capacity)
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#define SBNumberRingSubtract(number, count, capacity) \
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(((number) + (capacity) - (count)) % (capacity))
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#define SBNumberRingDecrement(number, capacity) \
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SBNumberRingSubtract(number, 1, capacity)
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#define SBLevelAsNormalBidiType(level) \
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( \
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((level) & 1) \
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? SBBidiTypeR \
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: SBBidiTypeL \
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)
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#define SBLevelAsOppositeBidiType(level) \
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( \
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((level) & 1) \
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? SBBidiTypeL \
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: SBBidiTypeR \
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)
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#define SBBidiTypeIsEqual(t1, t2) ((t1) == (t2))
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#define SBBidiTypeIsNumber(t) SBUInt8InRange(t, SBBidiTypeAN, SBBidiTypeEN)
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#define SBBidiTypeIsIsolate(t) SBUInt8InRange(t, SBBidiTypeLRI, SBBidiTypePDI)
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#define SBBidiTypeIsStrongOrNumber(t) (SBBidiTypeIsStrong(t) || SBBidiTypeIsNumber(t))
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#define SBBidiTypeIsNumberSeparator(t) SBUInt8InRange(t, SBBidiTypeES, SBBidiTypeCS)
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#define SBBidiTypeIsIsolateInitiator(t) SBUInt8InRange(t, SBBidiTypeLRI, SBBidiTypeFSI)
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#define SBBidiTypeIsIsolateTerminator(t) SBBidiTypeIsEqual(t, SBBidiTypePDI)
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#define SBBidiTypeIsNeutralOrIsolate(t) SBUInt8InRange(t, SBBidiTypeWS, SBBidiTypePDI)
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#define SBCodepointMax 0x10FFFF
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#define SBCodepointInRange(v, s, e) SBUInt32InRange(v, s, e)
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#define SBCodepointIsSurrogate(c) SBCodepointInRange(c, 0xD800, 0xDFFF)
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#define SBCodepointIsValid(c) (!SBCodepointIsSurrogate(c) && (c) <= SBCodepointMax)
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#define SBScriptIsCommonOrInherited(s) ((s) <= SBScriptZYYY)
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#endif
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