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line-class.go
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line-class.go
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package boundaryh
import "github.com/bobyang007/helper/unicodeh"
type lClass uint8
const (
lClassAI lClass = iota
lClassAL lClass = iota
lClassB2 lClass = iota
lClassBA lClass = iota
lClassBB lClass = iota
lClassBK lClass = iota
lClassCB lClass = iota
lClassCJ lClass = iota
lClassCL lClass = iota
lClassCM lClass = iota
lClassCP lClass = iota
lClassEB lClass = iota
lClassEM lClass = iota
lClassEX lClass = iota
lClassGL lClass = iota
lClassH2 lClass = iota
lClassH3 lClass = iota
lClassHL lClass = iota
lClassHY lClass = iota
lClassID lClass = iota
lClassIN lClass = iota
lClassIS lClass = iota
lClassJL lClass = iota
lClassJT lClass = iota
lClassJV lClass = iota
lClassNL lClass = iota
lClassNS lClass = iota
lClassNU lClass = iota
lClassOP lClass = iota
lClassPO lClass = iota
lClassPR lClass = iota
lClassQU lClass = iota
lClassRI lClass = iota
lClassSA lClass = iota
lClassSG lClass = iota
lClassSP lClass = iota
lClassSY lClass = iota
lClassWJ lClass = iota
lClassXX lClass = iota
lClassZW lClass = iota
lClassZWJ lClass = iota
)
// TODO
func lGetClassRaw(r rune) lClass {
switch {
default:
return lClassXX
case unicodeh.IsLineBreakAmbiguous(r):
return lClassAI
case unicodeh.IsLineBreakAlphabetic(r):
return lClassAL
case unicodeh.IsLineBreakBreakBoth(r):
return lClassB2
case unicodeh.IsLineBreakBreakAfter(r):
return lClassBA
case unicodeh.IsLineBreakBreakBefore(r):
return lClassBB
case unicodeh.IsLineBreakMandatoryBreak(r) || r == crRune || r == lfRune:
return lClassBK
case unicodeh.IsLineBreakContingentBreak(r):
return lClassCB
case unicodeh.IsLineBreakConditionalJapaneseStarter(r):
return lClassCJ
case unicodeh.IsLineBreakClosePunctuation(r):
return lClassCL
case unicodeh.IsLineBreakCombiningMark(r):
return lClassCM
case unicodeh.IsLineBreakCloseParenthesis(r):
return lClassCP
case unicodeh.IsLineBreakEBase(r):
return lClassEB
case unicodeh.IsLineBreakEModifier(r):
return lClassEM
case unicodeh.IsLineBreakExclamation(r):
return lClassEX
case unicodeh.IsLineBreakGlue(r):
return lClassGL
case unicodeh.IsLineBreakH2(r):
return lClassH2
case unicodeh.IsLineBreakH3(r):
return lClassH3
case unicodeh.IsLineBreakHebrewLetter(r):
return lClassHL
case unicodeh.IsLineBreakHyphen(r):
return lClassHY
case unicodeh.IsLineBreakIdeographic(r):
return lClassID
case unicodeh.IsLineBreakInseparable(r):
return lClassIN
case unicodeh.IsLineBreakInfixNumeric(r):
return lClassIS
case unicodeh.IsLineBreakJL(r):
return lClassJL
case unicodeh.IsLineBreakJT(r):
return lClassJT
case unicodeh.IsLineBreakJV(r):
return lClassJV
case unicodeh.IsLineBreakNextLine(r):
return lClassNL
case unicodeh.IsLineBreakNonstarter(r):
return lClassNS
case unicodeh.IsLineBreakNumeric(r):
return lClassNU
case unicodeh.IsLineBreakOpenPunctuation(r):
return lClassOP
case unicodeh.IsLineBreakPostfixNumeric(r):
return lClassPO
case unicodeh.IsLineBreakPrefixNumeric(r):
return lClassPR
case unicodeh.IsLineBreakQuotation(r):
return lClassQU
case unicodeh.IsLineBreakRegionalIndicator(r):
return lClassRI
case unicodeh.IsLineBreakComplexContext(r):
return lClassSA
case unicodeh.IsLineBreakSurrogate(r):
return lClassSG
case unicodeh.IsLineBreakSpace(r):
return lClassSP
case unicodeh.IsLineBreakBreakSymbols(r):
return lClassSY
case unicodeh.IsLineBreakWordJoiner(r):
return lClassWJ
case unicodeh.IsLineBreakZWSpace(r):
return lClassZW
case unicodeh.IsLineBreakZWJ(r):
return lClassZWJ
}
}
func lGetClass(r rune) lClass { // LB1
switch res := lGetClassRaw(r); res {
case lClassAI, lClassSG, lClassXX:
return lClassAL
case lClassSA:
if unicodeh.IsGeneralCategoryNonspacingMark(r) || unicodeh.IsGeneralCategorySpacingMark(r) {
return lClassCM
}
return lClassAL
case lClassCJ:
return lClassNS
default:
return res
}
}
func (c lClass) isSkip() bool { return c == lClassCM || c == lClassZWJ } // LB9
func (c lClass) isSkipBase() bool { // LB9
return c != lClassBK && c != lClassNL && c != lClassSP && c != lClassZW
}