Ilya Gorbunov
61 lines
1.4 KiB
Kotlin
61 lines
1.4 KiB
Kotlin
/*
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* Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
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* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
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*/
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package kotlin.js
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// Adopted from misc.js
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internal fun compareTo(a: dynamic, b: dynamic): Int = when (jsTypeOf(a)) {
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"number" -> when {
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jsTypeOf(b) == "number" ->
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doubleCompareTo(a, b)
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b is Long ->
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doubleCompareTo(a, b.toDouble())
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else ->
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primitiveCompareTo(a, b)
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}
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"string", "boolean" -> primitiveCompareTo(a, b)
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else -> compareToDoNotIntrinsicify(a, b)
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}
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@DoNotIntrinsify
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private fun <T : Comparable<T>> compareToDoNotIntrinsicify(a: Comparable<T>, b: T) =
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a.compareTo(b)
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internal fun primitiveCompareTo(a: dynamic, b: dynamic): Int =
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when {
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a < b -> -1
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a > b -> 1
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else -> 0
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}
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internal fun doubleCompareTo(a: dynamic, b: dynamic): Int =
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when {
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a < b -> -1
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a > b -> 1
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a === b -> {
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if (a !== 0)
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0
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else {
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val ia = 1.asDynamic() / a
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if (ia === 1.asDynamic() / b) {
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0
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} else if (ia < 0) {
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-1
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} else {
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1
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}
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}
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}
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a !== a ->
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if (b !== b) 0 else 1
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else -> -1
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} |