Fixed KT-5443 J2K converter crashes when code contains catch with multiple exception types

#KT-5443 Fixed

j2k/src/org/jetbrains/jet/j2k/visitors/StatementVisitor.kt

@@ -150,14 +150,7 @@ open class StatementVisitor(public val converter: Converter) : JavaElementVisito
 
     override fun visitTryStatement(tryStatement: PsiTryStatement) {
         val tryBlock = tryStatement.getTryBlock()
-        val catchesConverted = run {
-            val catchBlocks = tryStatement.getCatchBlocks()
-            val catchBlockParameters = tryStatement.getCatchBlockParameters()
-            catchBlocks.indices.map {
-                CatchStatement(converter.convertParameter(catchBlockParameters[it], Nullability.NotNull),
-                               converter.convertBlock(catchBlocks[it])).assignNoPrototype()
-            }
-        }
+        val catchesConverted = convertCatches(tryStatement)
         val finallyConverted = converter.convertBlock(tryStatement.getFinallyBlock())
 
         val resourceList = tryStatement.getResourceList()
@@ -172,6 +165,29 @@ open class StatementVisitor(public val converter: Converter) : JavaElementVisito
         result = TryStatement(converter.convertBlock(tryBlock), catchesConverted, finallyConverted)
     }
 
+    private fun convertCatches(tryStatement: PsiTryStatement): List<CatchStatement> {
+        val catches = ArrayList<CatchStatement>()
+        for ((block, parameter) in tryStatement.getCatchBlocks().zip(tryStatement.getCatchBlockParameters())) {
+            val blockConverted = converter.convertBlock(block)
+            val annotations = converter.convertAnnotations(parameter)
+            val parameterType = parameter.getType()
+            val types = if (parameterType is PsiDisjunctionType)
+                parameterType.getDisjunctions()
+            else
+                listOf(parameterType)
+            for (t in types) {
+                var convertedType = converter.typeConverter.convertType(t, Nullability.NotNull)
+                val convertedParameter = Parameter(parameter.declarationIdentifier(),
+                                                   convertedType,
+                                                   Parameter.VarValModifier.None,
+                                                   annotations,
+                                                   Modifiers.Empty).assignPrototype(parameter)
+                catches.add(CatchStatement(convertedParameter, blockConverted).assignNoPrototype())
+            }
+        }
+        return catches
+    }
+
     private fun convertTryWithResources(tryBlock: PsiCodeBlock?, resourceVariables: List<PsiResourceVariable>, catchesConverted: List<CatchStatement>, finallyConverted: Block): Statement {
         var wrapResultStatement: (Expression) -> Statement = { it }
         var converterForBody = converter

j2k/tests/test/org/jetbrains/jet/j2k/test/JavaToKotlinConverterTestGenerated.java

@@ -16,14 +16,17 @@
 
 package org.jetbrains.jet.j2k.test;
 
+import junit.framework.Assert;
 import junit.framework.Test;
 import junit.framework.TestSuite;
+
+import java.io.File;
+import java.util.regex.Pattern;
 import org.jetbrains.jet.JetTestUtils;
 import org.jetbrains.jet.test.InnerTestClasses;
 import org.jetbrains.jet.test.TestMetadata;
 
-import java.io.File;
-import java.util.regex.Pattern;
+import org.jetbrains.jet.j2k.test.AbstractJavaToKotlinConverterTest;
 
 /** This class is generated by {@link org.jetbrains.jet.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
 @SuppressWarnings("all")
@@ -2946,6 +2949,11 @@ public class JavaToKotlinConverterTestGenerated extends AbstractJavaToKotlinConv
             doTest("j2k/tests/testData/ast/tryStatement/commonCaseForTryStatement.java");
         }
         
+        @TestMetadata("disjunctionType.java")
+        public void testDisjunctionType() throws Exception {
+            doTest("j2k/tests/testData/ast/tryStatement/disjunctionType.java");
+        }
+        
         @TestMetadata("emptyTryWithTwoCatchesWithEmptyFinally.java")
         public void testEmptyTryWithTwoCatchesWithEmptyFinally() throws Exception {
             doTest("j2k/tests/testData/ast/tryStatement/emptyTryWithTwoCatchesWithEmptyFinally.java");

j2k/tests/testData/ast/tryStatement/disjunctionType.java

@@ -0,0 +1,13 @@
+//file
+import java.io.IOException;
+
+class A {
+    void foo() {
+        try {
+            bar()
+        }
+        catch(RuntimeException | IOException e) {
+            e.printStackTrace(); // print stack trace
+        }
+    }
+}

j2k/tests/testData/ast/tryStatement/disjunctionType.kt

@@ -0,0 +1,14 @@
+import java.io.IOException
+
+class A {
+    fun foo() {
+        try {
+            bar()
+        } catch (e: RuntimeException) {
+            e.printStackTrace() // print stack trace
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+    }
+}