Extract 'isToString()' function to Utils

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

@@ -8,36 +8,28 @@ package org.jetbrains.kotlin.idea.inspections
 import com.intellij.codeInsight.FileModificationService
 import com.intellij.codeInspection.*
 import com.intellij.openapi.project.Project
-import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
-import org.jetbrains.kotlin.idea.core.getDeepestSuperDeclarations
-import org.jetbrains.kotlin.idea.intentions.toResolvedCall
+import org.jetbrains.kotlin.idea.intentions.isToString
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.canPlaceAfterSimpleNameEntry
-import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
-import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
 
 class RemoveToStringInStringTemplateInspection : AbstractKotlinInspection(), CleanupLocalInspectionTool {
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean, session: LocalInspectionToolSession) =
-            dotQualifiedExpressionVisitor(fun(expression) {
-                if (expression.parent !is KtBlockStringTemplateEntry) return
-                if (expression.receiverExpression is KtSuperExpression) return
-                val selectorExpression = expression.selectorExpression ?: return
-                if (!expression.isToString()) return
+        dotQualifiedExpressionVisitor(fun(expression) {
+            if (expression.parent !is KtBlockStringTemplateEntry) return
+            if (expression.receiverExpression is KtSuperExpression) return
+            val selectorExpression = expression.selectorExpression ?: return
+            if (!expression.isToString()) return
 
-                holder.registerProblem(selectorExpression,
-                                       "Redundant 'toString()' call in string template",
-                                       ProblemHighlightType.LIKE_UNUSED_SYMBOL,
-                                       RemoveToStringFix())
-            })
+            holder.registerProblem(
+                selectorExpression,
+                "Redundant 'toString()' call in string template",
+                ProblemHighlightType.LIKE_UNUSED_SYMBOL,
+                RemoveToStringFix()
+            )
+        })
 }
 
-private fun KtDotQualifiedExpression.isToString(): Boolean {
-    val resolvedCall = toResolvedCall(BodyResolveMode.PARTIAL) ?: return false
-    val callableDescriptor = resolvedCall.resultingDescriptor as? CallableMemberDescriptor ?: return false
-    return callableDescriptor.getDeepestSuperDeclarations().any { it.fqNameUnsafe.asString() == "kotlin.Any.toString" }
-}
-
-class RemoveToStringFix: LocalQuickFix {
+class RemoveToStringFix : LocalQuickFix {
     override fun getName() = "Remove 'toString()' call"
     override fun getFamilyName() = name
 

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

@@ -8,14 +8,12 @@ package org.jetbrains.kotlin.idea.inspections
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElement
-import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
+import org.jetbrains.kotlin.idea.intentions.isToString
+import org.jetbrains.kotlin.psi.KtBlockStringTemplateEntry
 import org.jetbrains.kotlin.psi.KtDotQualifiedExpression
-import org.jetbrains.kotlin.idea.core.getDeepestSuperDeclarations
-import org.jetbrains.kotlin.idea.intentions.toResolvedCall
-import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.KtPsiFactory
+import org.jetbrains.kotlin.psi.KtReferenceExpression
 import org.jetbrains.kotlin.psi.psiUtil.getParentOfType
-import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
-import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
 
 class ReplaceToStringWithStringTemplateInspection : AbstractApplicabilityBasedInspection<KtDotQualifiedExpression>(
     KtDotQualifiedExpression::class.java
@@ -37,13 +35,4 @@ class ReplaceToStringWithStringTemplateInspection : AbstractApplicabilityBasedIn
     override fun inspectionTarget(element: KtDotQualifiedExpression) = element
 
     override val defaultFixText = "Replace 'toString' with string template"
-
-    private fun KtDotQualifiedExpression.isToString(): Boolean {
-        val callExpression = selectorExpression as? KtCallExpression ?: return false
-        val referenceExpression = callExpression.calleeExpression as? KtNameReferenceExpression ?: return false
-        if (referenceExpression.getReferencedName() != "toString") return false
-        val resolvedCall = toResolvedCall(BodyResolveMode.PARTIAL) ?: return false
-        val callableDescriptor = resolvedCall.resultingDescriptor as? CallableMemberDescriptor ?: return false
-        return callableDescriptor.getDeepestSuperDeclarations().any { it.fqNameUnsafe.asString() == "kotlin.Any.toString" }
-    }
 }

idea/src/org/jetbrains/kotlin/idea/intentions/Utils.kt

@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToCall
+import org.jetbrains.kotlin.idea.core.getDeepestSuperDeclarations
 import org.jetbrains.kotlin.idea.core.replaced
 import org.jetbrains.kotlin.idea.core.setType
 import org.jetbrains.kotlin.idea.references.mainReference
@@ -41,7 +42,6 @@ import org.jetbrains.kotlin.resolve.source.getPsi
 import org.jetbrains.kotlin.types.KotlinType
 import org.jetbrains.kotlin.types.isFlexible
 import org.jetbrains.kotlin.types.typeUtil.isUnit
-import java.lang.IllegalArgumentException
 
 fun KtContainerNode.description(): String? {
     when (node.elementType) {
@@ -320,4 +320,13 @@ fun KtDeclaration.isFinalizeMethod(descriptor: DeclarationDescriptor? = null): B
     return function.name == "finalize"
             && function.valueParameters.isEmpty()
             && ((descriptor ?: function.descriptor) as? FunctionDescriptor)?.returnType?.isUnit() == true
-}
+}
+
+fun KtDotQualifiedExpression.isToString(): Boolean {
+    val callExpression = selectorExpression as? KtCallExpression ?: return false
+    val referenceExpression = callExpression.calleeExpression as? KtNameReferenceExpression ?: return false
+    if (referenceExpression.getReferencedName() != "toString") return false
+    val resolvedCall = toResolvedCall(BodyResolveMode.PARTIAL) ?: return false
+    val callableDescriptor = resolvedCall.resultingDescriptor as? CallableMemberDescriptor ?: return false
+    return callableDescriptor.getDeepestSuperDeclarations().any { it.fqNameUnsafe.asString() == "kotlin.Any.toString" }
+}