Move stack trace inside Stack class

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/interpreter/IrInterpreter.kt

@@ -36,7 +36,6 @@ class IrInterpreter(irModule: IrModuleFragment) {
     private val illegalArgumentException = irExceptions.first { it.name.asString() == IllegalArgumentException::class.java.simpleName }
 
     private val stack = StackImpl()
-    private val stackTrace = mutableListOf<String>()
     private var commandCount = 0
 
     private val mapOfEnums = mutableMapOf<Pair<IrClass, String>, Complex>()
@@ -129,34 +128,21 @@ class IrInterpreter(irModule: IrModuleFragment) {
             // catch exception from JVM such as: ArithmeticException, StackOverflowError and others
             val exceptionName = e::class.java.simpleName
             val irExceptionClass = irExceptions.firstOrNull { it.name.asString() == exceptionName } ?: irBuiltIns.throwableClass.owner
-            stack.pushReturnValue(ExceptionState(e, irExceptionClass, stackTrace))
+            stack.pushReturnValue(ExceptionState(e, irExceptionClass, stack.getStackTrace()))
             return Exception
         }
     }
 
     // this method is used to get stack trace after exception
     private suspend fun interpretFunction(irFunction: IrFunctionImpl): ExecutionResult {
-        return try {
-            yield()
+        yield()
 
-            if (irFunction.fileOrNull != null) {
-                val fileName = irFunction.file.name
-                val lineNum = irFunction.fileEntry.getLineNumber(irFunction.startOffset) + 1
-                stackTrace += "at ${fileName.replace(".kt", "Kt").capitalize()}.${irFunction.fqNameForIrSerialization}($fileName:$lineNum)"
-            }
+        if (irFunction.fileOrNull != null) stack.setCurrentFrameName(irFunction)
 
-            if (stackTrace.size == MAX_STACK_SIZE) {
-                throw StackOverflowError("")
-            }
+        if (stack.getStackTrace().size == MAX_STACK_SIZE) throw StackOverflowError("")
 
-            when (val kind = (irFunction.body as? IrSyntheticBody)?.kind) {
-                IrSyntheticBodyKind.ENUM_VALUES, IrSyntheticBodyKind.ENUM_VALUEOF -> handleIntrinsicMethods(irFunction)
-                null -> irFunction.body?.interpret() ?: throw InterpreterException("Ir function must be with body")
-                else -> throw InterpreterException("Unsupported IrSyntheticBodyKind $kind")
-            }
-        } finally {
-            if (irFunction.fileOrNull != null) stackTrace.removeAt(stackTrace.lastIndex)
-        }
+        if (irFunction.body is IrSyntheticBody) return handleIntrinsicMethods(irFunction)
+        return irFunction.body?.interpret() ?: throw InterpreterException("Ir function must be with body")
     }
 
     private suspend fun MethodHandle?.invokeMethod(irFunction: IrFunction): ExecutionResult {
@@ -202,7 +188,7 @@ class IrInterpreter(irModule: IrModuleFragment) {
                     .singleOrNull { it.name.asString() == enumEntryName }
                 if (enumEntry == null) {
                     val message = "No enum constant ${enumClass.fqNameForIrSerialization}.$enumEntryName"
-                    stack.pushReturnValue(ExceptionState(IllegalArgumentException(message), illegalArgumentException, stackTrace))
+                    stack.pushReturnValue(ExceptionState(IllegalArgumentException(message), illegalArgumentException, stack.getStackTrace()))
                     return Exception
                 } else {
                     enumEntry.interpret().check { return it }
@@ -682,7 +668,7 @@ class IrInterpreter(irModule: IrModuleFragment) {
                     val convertibleClassName = stack.popReturnValue().irClass.fqNameForIrSerialization
                     val castClassName = expression.type.classOrNull?.owner?.fqNameForIrSerialization
                     val message = "$convertibleClassName cannot be cast to $castClassName"
-                    stack.pushReturnValue(ExceptionState(ClassCastException(message), classCastException, stackTrace))
+                    stack.pushReturnValue(ExceptionState(ClassCastException(message), classCastException, stack.getStackTrace()))
                     return Exception
                 }
             }
@@ -759,8 +745,8 @@ class IrInterpreter(irModule: IrModuleFragment) {
     private suspend fun interpretThrow(expression: IrThrow): ExecutionResult {
         expression.value.interpret().check { return it }
         when (val exception = stack.popReturnValue()) {
-            is Common -> stack.pushReturnValue(ExceptionState(exception, stackTrace))
-            is Wrapper -> stack.pushReturnValue(ExceptionState(exception, stackTrace))
+            is Common -> stack.pushReturnValue(ExceptionState(exception, stack.getStackTrace()))
+            is Wrapper -> stack.pushReturnValue(ExceptionState(exception, stack.getStackTrace()))
             is ExceptionState -> stack.pushReturnValue(exception)
             else -> throw InterpreterException("${exception::class} cannot be used as exception state")
         }

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/interpreter/stack/Stack.kt

@@ -9,6 +9,11 @@ import org.jetbrains.kotlin.backend.common.interpreter.ExecutionResult
 import org.jetbrains.kotlin.backend.common.interpreter.exceptions.InterpreterException
 import org.jetbrains.kotlin.backend.common.interpreter.state.State
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.declarations.name
+import org.jetbrains.kotlin.ir.util.file
+import org.jetbrains.kotlin.ir.util.fileEntry
+import org.jetbrains.kotlin.ir.util.fqNameWhenAvailable
 import org.jetbrains.kotlin.utils.addToStdlib.firstNotNullResult
 
 interface Stack {
@@ -16,6 +21,9 @@ interface Stack {
         asSubFrame: Boolean = false, initPool: List<Variable> = listOf(), block: suspend () -> ExecutionResult
     ): ExecutionResult
 
+    fun setCurrentFrameName(irFunction: IrFunction)
+    fun getStackTrace(): List<String>
+
     fun clean()
     fun addVar(variable: Variable)
     fun addAll(variables: List<Variable>)
@@ -49,6 +57,18 @@ class StackImpl : Stack {
         frameList.removeAt(frameList.lastIndex)
     }
 
+    override fun setCurrentFrameName(irFunction: IrFunction) {
+        val fileName = irFunction.file.name
+        val fileNameCapitalized = fileName.replace(".kt", "Kt").capitalize()
+        val lineNum = irFunction.fileEntry.getLineNumber(irFunction.startOffset) + 1
+        getCurrentFrame().frameEntryPoint = "at $fileNameCapitalized.${irFunction.fqNameWhenAvailable}($fileName:$lineNum)"
+    }
+
+    override fun getStackTrace(): List<String> {
+        // TODO implement some sort of cache
+        return frameList.mapNotNull { it.frameEntryPoint }
+    }
+
     override fun clean() {
         frameList.clear()
         frameList.add(FrameContainer())
@@ -92,7 +112,8 @@ class StackImpl : Stack {
 }
 
 private class FrameContainer(current: Frame = InterpreterFrame()) {
-    private var innerStack = mutableListOf(current)
+    var frameEntryPoint: String? = null
+    private val innerStack = mutableListOf(current)
     private fun getTopFrame() = innerStack.first()
 
     fun addSubFrame(frame: Frame) {