Report error on illegal variable declaration in when subject

2017-10-20 17:31:42 +03:00
parent 4fe894c03d
commit 7bc89b8871
7 changed files with 126 additions and 12 deletions
@@ -0,0 +1,41 @@
+// !LANGUAGE: +VariableDeclarationInWhenSubject
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
+// WITH_RUNTIME
+
+data class P(val x: Any, val y: Any)
+
+fun foo(): Any = 42
+fun String.bar(): Any = 42
+
+
+fun testSimpleValInWhenSubject() {
+    when (val y = foo()) {
+    }
+}
+
+fun testValWithoutInitializerWhenSubject() {
+    when (<!ILLEGAL_DECLARATION_IN_WHEN_SUBJECT!>val y: Any<!>) {
+        is String -> <!UNINITIALIZED_VARIABLE!>y<!>.<!UNRESOLVED_REFERENCE!>length<!>
+    }
+}
+
+fun testVarInWhenSubject() {
+    when (<!ILLEGAL_DECLARATION_IN_WHEN_SUBJECT!>var y = foo()<!>) {
+        is String -> y.<!UNRESOLVED_REFERENCE!>length<!>
+    }
+}
+
+fun testDestructuringInWhenSubject() {
+    when (val (y1, y2) = P(1, 2)) {
+    }
+}
+
+fun testExtensionValInWhenSubject() {
+    when (<!ILLEGAL_DECLARATION_IN_WHEN_SUBJECT!>val <!LOCAL_EXTENSION_PROPERTY, DEBUG_INFO_MISSING_UNRESOLVED!>String<!>.<!VARIABLE_WITH_NO_TYPE_NO_INITIALIZER!>len<!><!><!SYNTAX!><!> <!UNRESOLVED_REFERENCE!>get<!>(<!SYNTAX!><!>) = <!UNRESOLVED_REFERENCE!>bar<!>()<!SYNTAX!>)<!> <!UNUSED_LAMBDA_EXPRESSION!>{
+    }<!>
+}
+
+fun testDelegatedValInWhenSubject() {
+    when (<!ILLEGAL_DECLARATION_IN_WHEN_SUBJECT!>val y by <!UNRESOLVED_REFERENCE!>lazy<!> { 42 }<!>) {
+    }
+}
@@ -0,0 +1,22 @@
+package
+
+public fun foo(): kotlin.Any
+public fun testDelegatedValInWhenSubject(): kotlin.Unit
+public fun testDestructuringInWhenSubject(): kotlin.Unit
+public fun testExtensionValInWhenSubject(): kotlin.Unit
+public fun testSimpleValInWhenSubject(): kotlin.Unit
+public fun testValWithoutInitializerWhenSubject(): kotlin.Unit
+public fun testVarInWhenSubject(): kotlin.Unit
+public fun kotlin.String.bar(): kotlin.Any
+
+public final data class P {
+    public constructor P(/*0*/ x: kotlin.Any, /*1*/ y: kotlin.Any)
+    public final val x: kotlin.Any
+    public final val y: kotlin.Any
+    public final operator /*synthesized*/ fun component1(): kotlin.Any
+    public final operator /*synthesized*/ fun component2(): kotlin.Any
+    public final /*synthesized*/ fun copy(/*0*/ x: kotlin.Any = ..., /*1*/ y: kotlin.Any = ...): P
+    public open override /*1*/ /*synthesized*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*synthesized*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*synthesized*/ fun toString(): kotlin.String
+}