inline: substitute ellipsis type before array construction (IDEA-65897)

java/java-impl/src/com/intellij/refactoring/inline/InlineMethodProcessor.java

@@ -606,9 +606,9 @@ public class InlineMethodProcessor extends BaseRefactoringProcessor {
       @NonNls String defaultValue;
       if (paramType instanceof PsiEllipsisType) {
         final PsiEllipsisType ellipsisType = (PsiEllipsisType)paramType;
-        paramType = ellipsisType.toArrayType();
+        paramType = callSubstitutor.substitute(ellipsisType.toArrayType());
         if (applicabilityLevel == MethodCandidateInfo.ApplicabilityLevel.VARARGS) {
-          defaultValue = "new " + ellipsisType.getComponentType().getCanonicalText() + "[]{}";
+          defaultValue = "new " + ((PsiArrayType)paramType).getComponentType().getCanonicalText() + "[]{}";
         }
         else {
           defaultValue = PsiTypesUtil.getDefaultValueOfType(paramType);

java/java-tests/testData/refactoring/inlineMethod/ArrayTypeInferenceFromVarargs.java

@@ -0,0 +1,9 @@
+class Test {
+  <T> void doSmth(T... ps) {
+    System.out.println(ps);
+  }
+
+  void m() {
+    doS<caret>mth(1, 2, 3);
+  }
+}

java/java-tests/testData/refactoring/inlineMethod/ArrayTypeInferenceFromVarargs.java.after

@@ -0,0 +1,6 @@
+class Test {
+
+    void m() {
+        System.out.println(new Integer[]{1, 2, 3});
+    }
+}

java/java-tests/testSrc/com/intellij/refactoring/inline/InlineMethodTest.java

@@ -165,6 +165,10 @@ public class InlineMethodTest extends LightCodeInsightTestCase {
     doTest();
   }
 
+  public void testArrayTypeInferenceFromVarargs() throws Exception {
+    doTest();
+  }
+
   private void doTest() throws Exception {
     String name = getTestName(false);
     @NonNls String fileName = "/refactoring/inlineMethod/" + name + ".java";