Tianyu Geng
4915d8dda3
Changes from FE1.0: 1. As discussed previously, no expression evaluation happens during this check. 2. FE1.0 doesn't check redundant object comparisons.
71 lines
1.6 KiB
Kotlin
Vendored
71 lines
1.6 KiB
Kotlin
Vendored
/*
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* KOTLIN DIAGNOSTICS SPEC TEST (POSITIVE)
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*
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* SPEC VERSION: 0.1-313
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* PRIMARY LINKS: expressions, when-expression -> paragraph 5 -> sentence 1
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* expressions, when-expression -> paragraph 9 -> sentence 1
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* expressions, when-expression -> paragraph 2 -> sentence 4
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* expressions, when-expression -> paragraph 2 -> sentence 5
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*/
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package test
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const val four = 4
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fun first(arg: Int) = when (arg) {
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1 -> 2
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2 -> 3
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<!DUPLICATE_LABEL_IN_WHEN!>1<!> -> 4
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4 -> 5
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<!DUPLICATE_LABEL_IN_WHEN!>1<!> -> 6
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<!DUPLICATE_LABEL_IN_WHEN!>2<!> -> 7
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// Error should be here: see KT-11971
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four -> 8
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else -> 0
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}
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fun second(arg: String): Int {
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when (arg) {
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"ABC" -> return 0
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"DEF" -> return 1
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<!DUPLICATE_LABEL_IN_WHEN!>"ABC"<!> -> return -1
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<!DUPLICATE_LABEL_IN_WHEN!>"DEF"<!> -> return -2
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}
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return 42
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}
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fun third(arg: Any?): Int {
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when (arg) {
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null -> return -1
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is String -> return 0
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is Double -> return 1
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is <!DUPLICATE_LABEL_IN_WHEN!>Double<!> -> return 2
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<!DUPLICATE_LABEL_IN_WHEN!>null<!> -> return 3
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!is String -> return 4
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else -> return 5
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}
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}
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enum class Color { RED, GREEN, BLUE }
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fun fourth(arg: Color) = when (arg) {
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Color.RED -> "RED"
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Color.GREEN -> "GREEN"
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<!DUPLICATE_LABEL_IN_WHEN!>Color.RED<!> -> "BLUE"
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Color.BLUE -> "BLUE"
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}
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fun fifth(arg: Any?) = when (arg) {
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is Any -> "Any"
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<!ELSE_MISPLACED_IN_WHEN!>else<!> -> ""
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<!UNREACHABLE_CODE!>else -> null<!>
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}
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object Foo
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fun sixth(arg: Any?) = when (arg) {
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Foo -> ""
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Foo -> ""
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else -> null
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}
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