Support missing when branch exception throwing. (#174)

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BuiltinOperatorLowering.kt

@@ -68,6 +68,9 @@ private class BuiltinOperatorTransformer(val context: Context) : IrElementTransf
             irBuiltins.throwNpe -> IrCallImpl(expression.startOffset, expression.endOffset,
                     builtIns.getKonanInternalFunctions("ThrowNullPointerException").single())
 
+            irBuiltins.noWhenBranchMatchedException -> IrCallImpl(expression.startOffset, expression.endOffset,
+                    builtIns.getKonanInternalFunctions("ThrowNoWhenBranchMatchedException").single())
+
             else -> expression
         }
     }

backend.native/tests/build.gradle

@@ -287,6 +287,11 @@ task when7(type: RunKonanTest) {
     source = "codegen/branching/when7.kt"
 }
 
+task when8(type: RunKonanTest) {
+    source = "codegen/branching/when8.kt"
+    goldValue = "true\n"
+}
+
 task when_through(type: RunKonanTest) {
     source = "codegen/branching/when_through.kt"
 }

backend.native/tests/codegen/branching/when8.kt

@@ -0,0 +1,6 @@
+fun main(args: Array<String>) {
+    when (true) {
+        true -> println("true")
+        false -> println("false")
+    }
+}

gradle.properties

@@ -1,7 +1,3 @@
-#kotlin_version=1.1-M02
 kotlin_version=1.1-M03
-#kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-20161201.112229-281
-#kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-20161209.125829-302
-#kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-20161217.025654-317
-#kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-20161219.154657-321
-kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-20161224.154011-334
+#kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-SNAPSHOT
+kotlinCompilerModule=org.jetbrains.kotlin:kotlin-compiler:1.1-20161229.093306-344

runtime/src/main/kotlin/konan/internal/RuntimeUtils.kt

@@ -15,5 +15,9 @@ internal fun ThrowClassCastException(): Nothing {
     throw ClassCastException()
 }
 
+internal fun ThrowNoWhenBranchMatchedException(): Nothing {
+    throw NoWhenBranchMatchedException()
+}
+
 @ExportForCppRuntime
 internal fun TheEmptyString() = ""

runtime/src/main/kotlin/kotlin/Exceptions.kt

@@ -136,4 +136,13 @@ public class AssertionError : Error {
 
     constructor(message: String, cause: Throwable) : super(message, cause) {
     }
-}
+}
+
+public class NoWhenBranchMatchedException : RuntimeException {
+
+    constructor() : super() {
+    }
+
+    constructor(s: String) : super(s) {
+    }
+}