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improve performance when using BracePair #48

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merged 5 commits into from
May 2, 2018
Merged

improve performance when using BracePair #48

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9cecce7
improve performance when using `BracePair`
izhangzhihao May 1, 2018
94f7340
`pairs` should not be lazy
izhangzhihao May 1, 2018
10ca525
Simplify code
izhangzhihao May 1, 2018
147cf29
Do NOT check brackets is valid or not
izhangzhihao May 1, 2018
2136fad
Simplify code
izhangzhihao May 1, 2018
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Do NOT check brackets is valid or not
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@izhangzhihao
izhangzhihao committed May 1, 2018
commit 147cf2966689c9cb4eb31602a6befb0153e20630
33 changes: 1 addition & 32 deletions src/main/kotlin/com/github/izhangzhihao/rainbow/brackets/visitor/DefaultRainbowVisitor.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,7 @@ class DefaultRainbowVisitor : RainbowHighlightVisitor() {

val matching = filterPairs(type, element) ?: return

val pair = matching.takeIf { element.isValidBracket(it) } ?: return
val level = element.getBracketLevel(pair)
val level = element.getBracketLevel(matching)
if (level >= 0) {
element.setHighlightInfo(level)
}
Expand Down Expand Up @@ -84,36 +83,6 @@ class DefaultRainbowVisitor : RainbowHighlightVisitor() {
return (this as? LeafPsiElement)?.elementType
}

private fun LeafPsiElement.isValidBracket(pair: BracePair): Boolean {
val pairType = when (elementType) {
pair.leftBraceType -> pair.rightBraceType
pair.rightBraceType -> pair.leftBraceType
else -> return false
}

return if (pairType == pair.leftBraceType) {
checkBracePair(this, parent.firstChild, pairType, PsiElement::getNextSibling)
} else {
checkBracePair(this, parent.lastChild, pairType, PsiElement::getPrevSibling)
}
}

private fun checkBracePair(brace: PsiElement,
start: PsiElement,
type: IElementType,
next: PsiElement.() -> PsiElement?): Boolean {
var element: PsiElement? = start
while (element != null && element != brace) {
if (element is LeafPsiElement && element.elementType == type) {
return true
}

element = element.next()
}

return false
}

private fun filterPairs(type: IElementType, element: LeafPsiElement): BracePair? {
val pairs = element.language.bracePairs ?: return null
val filterBraceType = pairs[type.toString()]
Expand Down