[JS IR BE] Add noWhenBranchMatchedException

* refact exception helpers

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/calls/CallsLowering.kt

@@ -12,7 +12,6 @@ import org.jetbrains.kotlin.ir.declarations.IrFile
 import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.expressions.IrCall
 import org.jetbrains.kotlin.ir.expressions.IrExpression
-import org.jetbrains.kotlin.ir.types.isLong
 import org.jetbrains.kotlin.ir.util.hasAnnotation
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
 import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
@@ -26,7 +25,8 @@ class CallsLowering(val context: JsIrBackendContext) : FileLoweringPass {
         PrimitiveContainerMemberCallTransformer(context),
         MethodsOfAnyCallsTransformer(context),
         ReflectionCallsTransformer(context),
-        EnumIntrinsicsTransformer(context)
+        EnumIntrinsicsTransformer(context),
+        ExceptionHelperCallsTransformer(context)
     )
 
     override fun lower(irFile: IrFile) {

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/calls/ExceptionHelperCallsTransformer.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.ir.backend.js.lower.calls
+
+import org.jetbrains.kotlin.ir.backend.js.JsIrBackendContext
+import org.jetbrains.kotlin.ir.backend.js.ir.irCall
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.util.kotlinPackageFqn
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
+
+class ExceptionHelperCallsTransformer(private val context: JsIrBackendContext) : CallsTransformer {
+
+    private fun referenceFunction(fqn: FqName) = context.getFunctions(fqn).singleOrNull()?.let {
+        context.symbolTable.referenceSimpleFunction(it)
+    }
+
+    private val helperMapping = mapOf(
+        context.irBuiltIns.throwNpeSymbol to referenceFunction(kotlinPackageFqn.child(Name.identifier("THROW_NPE"))),
+        context.irBuiltIns.throwCceSymbol to referenceFunction(kotlinPackageFqn.child(Name.identifier("THROW_CCE"))),
+        context.irBuiltIns.throwIseSymbol to referenceFunction(kotlinPackageFqn.child(Name.identifier("THROW_ISE"))),
+        context.irBuiltIns.noWhenBranchMatchedExceptionSymbol to referenceFunction(kotlinPackageFqn.child(Name.identifier("noWhenBranchMatchedException")))
+    )
+
+
+    override fun transformCall(call: IrCall) = helperMapping[call.symbol]?.let { irCall(call, it) } ?: call
+}

libraries/stdlib/js/irRuntime/hacks.kt

@@ -48,6 +48,9 @@ public inline fun longArrayOf(vararg a: Long) = a
 internal fun throwUninitializedPropertyAccessException(name: String): Nothing =
     throw UninitializedPropertyAccessException("lateinit property $name has not been initialized")
 
+internal fun noWhenBranchMatchedException(): Nothing = throw NoWhenBranchMatchedException()
+
+
 fun THROW_ISE() {
     throw IllegalStateException()
 }