Fixes for ReplaceArraysCopyOfWithCopyOfInspection

- Reduce applicability range
- Don't fix reporting level, otherwise it won't be possible to change
  it in settings
- Using isCalling utility

idea/src/org/jetbrains/kotlin/idea/inspections/ReplaceArraysCopyOfWithCopyOfInspection.kt

@@ -11,27 +11,20 @@ import com.intellij.codeInspection.ProblemHighlightType
 import com.intellij.codeInspection.ProblemsHolder
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElementVisitor
-import org.jetbrains.kotlin.idea.intentions.callExpression
-import org.jetbrains.kotlin.idea.intentions.calleeName
-import org.jetbrains.kotlin.idea.intentions.getCallableDescriptor
+import org.jetbrains.kotlin.idea.inspections.collections.isCalling
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
 
 class ReplaceArraysCopyOfWithCopyOfInspection : AbstractKotlinInspection() {
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
-        return object : KtVisitorVoid() {
-            override fun visitDotQualifiedExpression(expression: KtDotQualifiedExpression) {
-                super.visitDotQualifiedExpression(expression)
-
-                if (expression.isArraysCopyOf()) {
-                    holder.registerProblem(
-                        expression,
-                        "Replace 'Arrays.copyOf' with 'copyOf'",
-                        ProblemHighlightType.WEAK_WARNING,
-                        ReplaceArraysCopyOfWithCopyOfQuickfix()
-                    )
-                }
+        return simpleNameExpressionVisitor { simpleNameExpression ->
+            if (simpleNameExpression.isArraysCopyOf()) {
+                holder.registerProblem(
+                    simpleNameExpression,
+                    "Replace 'Arrays.copyOf' with 'copyOf'",
+                    ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
+                    ReplaceArraysCopyOfWithCopyOfQuickfix()
+                )
             }
         }
     }
@@ -43,15 +36,21 @@ class ReplaceArraysCopyOfWithCopyOfQuickfix : LocalQuickFix {
     override fun getFamilyName() = name
 
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
-        val element = descriptor.psiElement as KtDotQualifiedExpression
-        val args = element.callExpression?.valueArguments?.mapNotNull { it.getArgumentExpression() }?.toTypedArray() ?: return
-        element.replace(KtPsiFactory(element).createExpressionByPattern("$0.copyOf($1)", *args))
+        val element = descriptor.psiElement as? KtSimpleNameExpression ?: return
+        val callExpression = (element.parent as? KtCallExpression) ?: return
+        val qualifiedExpression = (callExpression.parent as? KtDotQualifiedExpression) ?: return
+
+        val args = callExpression.valueArguments.mapNotNull { it.getArgumentExpression() }.toTypedArray() ?: return
+        if (args.size != 2) return
+
+        qualifiedExpression.replace(KtPsiFactory(element).createExpressionByPattern("$0.copyOf($1)", *args))
     }
 }
 
-private fun KtDotQualifiedExpression.isArraysCopyOf(): Boolean {
-    if (callExpression?.valueArguments?.size != 2) return false
-    if (callExpression?.valueArguments?.mapNotNull { it.getArgumentExpression() }?.size != 2) return false
-    if (calleeName != "copyOf") return false
-    return getCallableDescriptor()?.containingDeclaration?.fqNameSafe == FqName("java.util.Arrays")
+private fun KtSimpleNameExpression.isArraysCopyOf(): Boolean {
+    val callExpression = (parent as? KtCallExpression) ?: return false
+    if (callExpression.valueArguments.size != 2) return false
+    if (callExpression.valueArguments.mapNotNull { it.getArgumentExpression() }.size != 2) return false
+
+    return callExpression.isCalling(FqName("java.util.Arrays.copyOf"))
 }

idea/testData/inspectionsLocal/replaceArraysCopyOfWithCopyOf/qualified.kt

@@ -0,0 +1,5 @@
+// WITH_RUNTIME
+fun test() {
+    val array = intArrayOf(1, 2, 3)
+    val result = java.util.Arrays.<caret>copyOf(array, 3)
+}

idea/testData/inspectionsLocal/replaceArraysCopyOfWithCopyOf/qualified.kt.after

@@ -0,0 +1,5 @@
+// WITH_RUNTIME
+fun test() {
+    val array = intArrayOf(1, 2, 3)
+    val result = array.copyOf(3)
+}

idea/testData/inspectionsLocal/replaceArraysCopyOfWithCopyOf/simple.kt

@@ -3,5 +3,5 @@ import java.util.Arrays
 
 fun test() {
     val array = intArrayOf(1, 2, 3)
-    val result = <caret>Arrays.copyOf(array, 3)
+    val result = Arrays.<caret>copyOf(array, 3)
 }

idea/tests/org/jetbrains/kotlin/idea/inspections/LocalInspectionTestGenerated.java

@@ -5131,6 +5131,13 @@ public class LocalInspectionTestGenerated extends AbstractLocalInspectionTest {
             doTest(fileName);
         }
 
+
+        @TestMetadata("qualified.kt")
+        public void testQualified() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/inspectionsLocal/replaceArraysCopyOfWithCopyOf/qualified.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("simple.kt")
         public void testSimple() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/inspectionsLocal/replaceArraysCopyOfWithCopyOf/simple.kt");