[KT] Move noWhenBranchMatchedException intrinsic handling to a lowe…

…ring

In 2.1.0 this will become important as we no longer will see object members as
being static -- instead calls must be lowered. Therefore, these intrinsics need
to be implemented in lowerings rather than later on in CUB.

PiperOrigin-RevId: 700114377

transpiler/java/com/google/j2cl/transpiler/frontend/kotlin/CompilationUnitBuilder.kt

@@ -683,7 +683,6 @@ class CompilationUnitBuilder(
       irCall.isDataClassArrayMemberToString -> convertDataClassArrayMemberCall(irCall, "toString")
       irCall.isAnyToString -> convertAnyToStringCall(irCall)
       irCall.isCheckNotNullCall -> convertCheckNotNullCall(irCall)
-      irCall.isNoWhenBranchMatchedException -> convertNoWhenBranchMatchedException(irCall)
       irCall.isJavaClassPropertyReference -> convertJavaClassPropertyReference(irCall)
       irCall.isKClassJavaPropertyReference ->
         convertKClassJavaPropertyReference(irCall, wrapPrimitives = false)
@@ -952,19 +951,6 @@ class CompilationUnitBuilder(
     }
   }
 
-  private fun convertNoWhenBranchMatchedException(irCall: IrCall): Expression {
-    require(irCall.valueArgumentsCount == 0) {
-      "throwNoWhenBranchMatchedException should have no arguments"
-    }
-    return MethodCall.Builder.from(
-        TypeDescriptors.get()
-          .kotlinJvmInternalIntrinsics!!
-          .getMethodDescriptor("throwNoWhenBranchMatchedException")
-      )
-      .setSourcePosition(getSourcePosition(irCall))
-      .build()
-  }
-
   private fun convertPrefixOperation(irCall: IrCall): Expression {
     val prefixOperator = requireNotNull(intrinsicMethods.getPrefixOperator(irCall.symbol))
 
@@ -1698,9 +1684,6 @@ class CompilationUnitBuilder(
   private val IrCall.isCheckNotNullCall: Boolean
     get() = intrinsicMethods.isCheckNotNull(this)
 
-  private val IrCall.isNoWhenBranchMatchedException: Boolean
-    get() = intrinsicMethods.isNoWhenBranchMatchedException(this)
-
   private val IrCall.isJavaClassPropertyReference: Boolean
     get() = intrinsicMethods.isJavaClassProperty(this)
 

transpiler/java/com/google/j2cl/transpiler/frontend/kotlin/lower/IntrinsicFunctionCallsLowering.kt

@@ -18,6 +18,7 @@
 package com.google.j2cl.transpiler.frontend.kotlin.lower
 
 import org.jetbrains.kotlin.backend.common.FileLoweringPass
+import org.jetbrains.kotlin.backend.jvm.functionByName
 import org.jetbrains.kotlin.backend.jvm.ir.createJvmIrBuilder
 import org.jetbrains.kotlin.backend.jvm.ir.findEnumValuesFunction
 import org.jetbrains.kotlin.ir.backend.js.utils.typeArguments
@@ -38,6 +39,7 @@ import org.jetbrains.kotlin.ir.util.isPrimitiveArray
 import org.jetbrains.kotlin.ir.util.parentAsClass
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
 import org.jetbrains.kotlin.name.CallableId
+import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 
@@ -56,6 +58,7 @@ class IntrinsicFunctionCallsLowering(j2clBackendContext: J2clBackendContext) :
       expression.isEnumEntries || expression.isEnumGetEntries -> lowerEnumEntries(expression)
       expression.isRangeUntilCall -> lowerRangeUntilCall(expression)
       expression.isArrayIteratorCall -> lowerArrayIteratorCall(expression)
+      expression.isNoWhenBranchMatchedException -> lowerNoWhenBranchMatchedException(expression)
       else -> super.visitCall(expression)
     }
   }
@@ -143,6 +146,21 @@ class IntrinsicFunctionCallsLowering(j2clBackendContext: J2clBackendContext) :
     }
   }
 
+  private val jvmIntrinsicsClass by lazy {
+    context.irPluginContext!!.referenceClass(
+      ClassId.topLevel(FqName("kotlin.jvm.internal.Intrinsics"))
+    )!!
+  }
+
+  private val throwNoWhenBranchMatchedException by lazy {
+    jvmIntrinsicsClass.functionByName("throwNoWhenBranchMatchedException")
+  }
+
+  private fun lowerNoWhenBranchMatchedException(irCall: IrCall) =
+    context.createJvmIrBuilder(throwNoWhenBranchMatchedException, irCall).run {
+      irCall(throwNoWhenBranchMatchedException)
+    }
+
   private val IrCall.isEnumEntries: Boolean
     get() = intrinsics.isEnumEntries(this)
 
@@ -154,4 +172,7 @@ class IntrinsicFunctionCallsLowering(j2clBackendContext: J2clBackendContext) :
 
   private val IrCall.isEnumGetEntries: Boolean
     get() = intrinsics.isEnumGetEntries(this)
+
+  private val IrCall.isNoWhenBranchMatchedException: Boolean
+    get() = intrinsics.isNoWhenBranchMatchedException(this)
 }