Fix Evaluate Expression for inline functions from multifile package class.

Find main class generated for debugger by its name instead of relativePath length.
 #KT-22311 Fixed

idea/idea-jvm/src/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluationBuilder.kt

@@ -80,7 +80,6 @@ import org.jetbrains.kotlin.resolve.AnalyzingUtils
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.BindingTrace
 import org.jetbrains.kotlin.resolve.jvm.JvmClassName
-import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm
 import org.jetbrains.org.objectweb.asm.*
 import org.jetbrains.org.objectweb.asm.Opcodes.ASM5
 import org.jetbrains.org.objectweb.asm.Type
@@ -91,7 +90,8 @@ import java.util.*
 internal val RECEIVER_NAME = "\$receiver"
 internal val THIS_NAME = "this"
 internal val LOG = Logger.getInstance("#org.jetbrains.kotlin.idea.debugger.evaluate.KotlinEvaluator")
-internal val GENERATED_FUNCTION_NAME = "generated_for_debugger_kotlin_rulezzzz"
+internal val GENERATED_FUNCTION_NAME = "generated_for_debugger_fun"
+internal val GENERATED_CLASS_NAME = "Generated_for_debugger_class"
 
 private val DEBUG_MODE = false
 
@@ -158,7 +158,7 @@ class KotlinEvaluator(val codeFragment: KtCodeFragment, val sourcePosition: Sour
             // If bytecode was taken from cache and exception was thrown - recompile bytecode and run eval4j again
             if (isCompiledDataFromCache && result is ExceptionThrown && result.kind == ExceptionThrown.ExceptionKind.BROKEN_CODE) {
                 // We need only lambda classes here cause we using only eval4j evaluation method
-                val classLoaderHandler = loadClasses(context, compiledData.classes.drop(1))
+                val classLoaderHandler = loadClasses(context, compiledData.classes.filter { !it.isMainClass() })
 
                 try {
                     return runEval4j(context, extractAndCompile(codeFragment, sourcePosition, context)).toJdiValue(context)
@@ -236,7 +236,6 @@ class KotlinEvaluator(val codeFragment: KtCodeFragment, val sourcePosition: Sour
             val classFileFactory = createClassFileFactory(codeFragment, extractedFunction, context, parametersDescriptor)
 
             val outputFiles = classFileFactory.asList().filterClassFiles()
-                    .sortedBy { it.relativePath.length }
 
             for (file in outputFiles) {
                 if (LOG.isDebugEnabled) {
@@ -260,7 +259,7 @@ class KotlinEvaluator(val codeFragment: KtCodeFragment, val sourcePosition: Sour
         }
 
         private val CompiledDataDescriptor.mainClass
-            get() = classes.firstOrNull() ?: error(
+            get() = classes.firstOrNull { it.isMainClass() } ?: error(
                     "Can't find main class for " + sourcePosition.elementAt.getParentOfType<KtDeclaration>(strict = false))
 
         private fun evaluateWithCompilation(context: EvaluationContextImpl, compiledData: CompiledDataDescriptor): Any? {
@@ -569,6 +568,7 @@ class KotlinEvaluator(val codeFragment: KtCodeFragment, val sourcePosition: Sour
 }
 
 private val template = """
+@file:JvmName("$GENERATED_CLASS_NAME")
 !PACKAGE!
 
 !IMPORT_LIST!

idea/idea-jvm/src/org/jetbrains/kotlin/idea/debugger/evaluate/classLoading/ClassLoadingAdapter.kt

@@ -36,7 +36,7 @@ interface ClassLoadingAdapter {
 
         fun loadClasses(context: EvaluationContextImpl, classes: Collection<ClassToLoad>): ClassLoaderHandler? {
             val hasAdditionalClasses = classes.size > 1
-            val hasLoops = classes.isNotEmpty() && doesContainLoops(classes.first().bytes)
+            val hasLoops = classes.isNotEmpty() && doesContainLoops(classes.first { it.isMainClass() }.bytes)
 
             for (adapter in ADAPTERS) {
                 if (adapter.isApplicable(

idea/idea-jvm/src/org/jetbrains/kotlin/idea/debugger/evaluate/classLoading/ClassToLoad.kt

@@ -16,5 +16,9 @@
 
 package org.jetbrains.kotlin.idea.debugger.evaluate.classLoading
 
+import org.jetbrains.kotlin.idea.debugger.evaluate.GENERATED_CLASS_NAME
+
 @Suppress("ArrayInDataClass")
-data class ClassToLoad(val className: String, val relativeFileName: String, val bytes: ByteArray)
+data class ClassToLoad(val className: String, val relativeFileName: String, val bytes: ByteArray) {
+    fun isMainClass() = className.endsWith(GENERATED_CLASS_NAME)
+}

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/compilingEvaluator/ceObject.kt

@@ -16,4 +16,4 @@ interface T {
 // RESULT: 1: I
 
 // EXPRESSION: object: T {}
-// RESULT: instance of ceObject.DebugFileKt$generated_for_debugger_kotlin_rulezzzz$1(id=ID): LceObject/DebugFileKt$generated_for_debugger_kotlin_rulezzzz$1;
+// RESULT: instance of ceObject.Generated_for_debugger_class$generated_for_debugger_fun$1(id=ID): LceObject/Generated_for_debugger_class$generated_for_debugger_fun$1;

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/inlineFunInMultiFilePackage.kt

@@ -0,0 +1,10 @@
+package inlineFunInMultiFilePackage
+
+fun main(args: Array<String>) {
+    //Breakpoint!
+    val a = 1
+}
+
+// EXPRESSION: multiFilePackage.foo { 1 }
+// RESULT: 1: I
+

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/inlineFunInMultiFilePackage.out

@@ -0,0 +1,8 @@
+LineBreakpoint created at inlineFunInMultiFilePackage.kt:5
+Run Java
+Connected to the target VM
+inlineFunInMultiFilePackage.kt:5
+Compile bytecode for multiFilePackage.foo { 1 }
+Disconnected from the target VM
+
+Process finished with exit code 0

idea/testData/debugger/tinyApp/src/forTests/multiFilePackage.kt

@@ -0,0 +1,5 @@
+@file:JvmMultifileClass
+@file:JvmName("NewName")
+package multiFilePackage
+
+inline fun foo(f: () -> Int) = f()

idea/tests/org/jetbrains/kotlin/idea/debugger/evaluate/KotlinEvaluateExpressionTestGenerated.java

@@ -177,6 +177,12 @@ public class KotlinEvaluateExpressionTestGenerated extends AbstractKotlinEvaluat
             doSingleBreakpointTest(fileName);
         }
 
+        @TestMetadata("inlineFunInMultiFilePackage.kt")
+        public void testInlineFunInMultiFilePackage() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/inlineFunInMultiFilePackage.kt");
+            doSingleBreakpointTest(fileName);
+        }
+
         @TestMetadata("inlineFunction.kt")
         public void testInlineFunction() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/inlineFunction.kt");