New J2K: do not print qualified names if corresponding qualifier can unambiguously resolved

This speeds up shortening qualified references phase

nj2k/testData/copyPaste/SeveralMethodsSample.expected.kt

@@ -18,8 +18,7 @@ class A {
                 }
             }
         }
-        assert(element is PsiMethod
-        ) { "Method accepts only kotlin functions/properties and java methods, but '" + element.getText().toString() + "' was found" }
+        assert(element is PsiMethod) { "Method accepts only kotlin functions/properties and java methods, but '" + element.getText().toString() + "' was found" }
         return JetRefactoringUtil.formatPsiMethod(element as PsiMethod, true, false)
     }
 

nj2k/testData/newJ2k/annotations/jetbrainsNotNull.kt

@@ -1,4 +1,3 @@
-// ERROR: Unresolved reference: Test
 // !forceNotNullTypes: false
 // !specifyLocalVariableTypeByDefault: true
 package test
@@ -18,7 +17,7 @@ class Test(str: String) {
         val test = "String2"
         sout(test)
         sout(dummy(test))
-        test.Test(test)
+        Test(test)
     }
 
     init {

nj2k/testData/newJ2k/annotations/jetbrainsNullable.kt

@@ -1,4 +1,3 @@
-// ERROR: Unresolved reference: Test
 // !specifyLocalVariableTypeByDefault: true
 package test
 
@@ -17,7 +16,7 @@ class Test(str: String?) {
         val test = "String2"
         sout(test)
         sout(dummy(test))
-        test.Test(test)
+        Test(test)
     }
 
     init {

nj2k/testData/newJ2k/constructors/nestedClassNameInParameterDefaults2.kt

@@ -1,3 +1,5 @@
+import A.Nested
+
 internal class A @JvmOverloads constructor(nested: Nested? = Nested(Nested.FIELD)) {
     internal class Nested(p: Int) {
         companion object {
@@ -7,5 +9,5 @@ internal class A @JvmOverloads constructor(nested: Nested? = Nested(Nested.FIELD
 }
 
 internal class B {
-    var nested: A.Nested? = null
+    var nested: Nested? = null
 }

nj2k/testData/newJ2k/constructors/nestedClassNameInParameterDefaults3.kt

@@ -1,5 +1,7 @@
 package pack
 
+import pack.A.Nested
+
 internal class A @JvmOverloads constructor(nested: Nested? = Nested(Nested.FIELD)) {
     internal class Nested(p: Int) {
         companion object {
@@ -9,5 +11,5 @@ internal class A @JvmOverloads constructor(nested: Nested? = Nested(Nested.FIELD
 }
 
 internal class B {
-    var nested: A.Nested? = null
+    var nested: Nested? = null
 }

nj2k/testData/newJ2k/constructors/nestedClassNameInParameterDefaults4.kt

@@ -1,5 +1,7 @@
 package pack
 
+import pack.A.Nested
+
 internal class A @JvmOverloads constructor(nested: Nested? = Nested(Nested.FIELD)) {
     internal class Nested(p: Int) {
         companion object {
@@ -9,5 +11,5 @@ internal class A @JvmOverloads constructor(nested: Nested? = Nested(Nested.FIELD
 }
 
 internal class B {
-    var nested: A.Nested? = null
+    var nested: Nested? = null
 }

nj2k/testData/newJ2k/issues/kt-19296.kt

@@ -1,3 +1,5 @@
+import A.I
+
 open class A {
     interface I {
         fun f()
@@ -6,5 +8,5 @@ open class A {
 
 class B : A()
 class Test {
-    var z: A.I? = null
+    var z: I? = null
 }

nj2k/testData/newJ2k/issues/kt-24677.kt

@@ -1,5 +1,7 @@
+import Foo.SomeClass
+
 internal interface FooInterface {
-    fun foo(): ArrayList<out Foo.SomeClass?>?
+    fun foo(): ArrayList<out SomeClass?>?
 }
 
 class Foo : FooInterface {

nj2k/testData/newJ2k/javaStreamsApi/formatting.kt

@@ -1,4 +1,3 @@
-import java.util.Comparator
 import java.util.stream.Collectors
 
 internal class Test {

nj2k/testData/newJ2k/javaStreamsApi/streamOperations.kt

@@ -1,4 +1,3 @@
-import java.util.Comparator
 import java.util.stream.Collectors
 
 internal class Test {

nj2k/testData/newJ2k/newClassExpression/newStaticInnerClass.kt

@@ -1,11 +1,13 @@
 package demo
 
+import demo.Foo.Bar
+
 internal class Foo {
     internal class Bar
 }
 
 internal class User {
     fun main() {
-        val boo = Foo.Bar()
+        val boo = Bar()
     }
 }