Refactored ReplaceItWithExplicitFunctionLiteralParamIntention

idea/idea-analysis/src/org/jetbrains/kotlin/idea/JetBundle.properties

@@ -296,8 +296,6 @@ replace.with.infix.function.call.intention=Replace with infix function call
 replace.with.infix.function.call.intention.family=Replace with Infix Function Call
 replace.with.infix.function.call.intention.error.resolution.failed=The element cannot be resolved
 replace.with.infix.function.call.intention.error.package.call=Cannot be applied with a package as the receiver
-replace.it.with.explicit.function.literal.param=Replace 'it' with explicit parameter
-replace.it.with.explicit.function.literal.param.family=Replace 'it' with Explicit Parameter
 split.if=Split into 2 if's
 split.if.family=Split If
 replace.with.operator.assign.intention=Replace with an operator-assign expression

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

@@ -35,54 +35,27 @@ import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
 
-public class ReplaceItWithExplicitFunctionLiteralParamIntention() : PsiElementBaseIntentionAction() {
-    override fun invoke(project: Project, editor: Editor, element: PsiElement) {
-        val simpleNameExpression = element.getStrictParentOfType<JetSimpleNameExpression>()!!
+public class ReplaceItWithExplicitFunctionLiteralParamIntention() : JetSelfTargetingOffsetIndependentIntention<JetSimpleNameExpression>(
+        javaClass(), "Replace 'it' with explicit parameter"
+) {
+    override fun isApplicableTo(element: JetSimpleNameExpression)
+            = isAutoCreatedItUsage(element)
 
-        val simpleNameReference = simpleNameExpression.getReference() as JetReference?
-        val target = simpleNameReference?.resolveToDescriptors(simpleNameExpression.analyze(BodyResolveMode.PARTIAL))?.first()!!
+    override fun applyTo(element: JetSimpleNameExpression, editor: Editor) {
+        val reference = element.getReference() as JetReference
+        val target = reference.resolveToDescriptors(element.analyze()).first()
 
-        val funcExpr = DescriptorToSourceUtils.descriptorToDeclaration(target.getContainingDeclaration()!!) as JetFunctionLiteral
+        val functionLiteral = DescriptorToSourceUtils.descriptorToDeclaration(target.getContainingDeclaration()!!) as JetFunctionLiteral
 
-        val newExpr = JetPsiFactory(simpleNameExpression).createExpression("{ it -> 42 }") as JetFunctionLiteralExpression
-        funcExpr.addRangeAfter(newExpr.getFunctionLiteral().getValueParameterList(),
-                               newExpr.getFunctionLiteral().getArrowNode()!!.getPsi(),
-                               funcExpr.getLBrace())
-        PsiDocumentManager.getInstance(project).doPostponedOperationsAndUnblockDocument(editor.getDocument())
+        val newExpr = JetPsiFactory(element).createExpression("{ it -> }") as JetFunctionLiteralExpression
+        functionLiteral.addRangeAfter(
+                newExpr.getFunctionLiteral().getValueParameterList(),
+                newExpr.getFunctionLiteral().getArrowNode()!!.getPsi(),
+                functionLiteral.getLBrace())
+        PsiDocumentManager.getInstance(element.getProject()).doPostponedOperationsAndUnblockDocument(editor.getDocument())
 
-        val paramToRename = funcExpr.getValueParameters().first()
+        val paramToRename = functionLiteral.getValueParameters().single()
         editor.getCaretModel().moveToOffset(paramToRename.getTextOffset())
         VariableInplaceRenameHandler().doRename(paramToRename, editor, null)
     }
-
-    override fun isAvailable(project: Project, editor: Editor, element: PsiElement): Boolean {
-        val simpleNameExpression = element.getStrictParentOfType<JetSimpleNameExpression>()
-        if (simpleNameExpression == null || !isAutoCreatedIt(simpleNameExpression)) {
-            return false
-        }
-
-        setText(JetBundle.message("replace.it.with.explicit.function.literal.param"))
-        return true
-    }
-
-    override fun getFamilyName(): String {
-        return JetBundle.message("replace.it.with.explicit.function.literal.param.family")
-    }
-
-    companion object {
-        fun isAutoCreatedIt(simpleNameExpression: JetSimpleNameExpression): Boolean {
-            if (simpleNameExpression.getReferencedName() != "it") {
-                return false
-            }
-
-            val bindingContext = simpleNameExpression.analyze(BodyResolveMode.PARTIAL)
-            val reference = simpleNameExpression.getReference() as JetReference?
-            val simpleNameTarget = reference?.resolveToDescriptors(bindingContext)?.firstOrNull() as? ValueParameterDescriptor?
-            if (simpleNameTarget == null || bindingContext.get(BindingContext.AUTO_CREATED_IT, simpleNameTarget) != true) {
-                return false
-            }
-
-            return true
-        }
-    }
 }

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

@@ -19,7 +19,9 @@ package org.jetbrains.kotlin.idea.intentions
 import com.intellij.openapi.util.TextRange
 import org.jetbrains.kotlin.JetNodeTypes
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
 import org.jetbrains.kotlin.idea.caches.resolve.analyze
+import org.jetbrains.kotlin.idea.references.JetReference
 import org.jetbrains.kotlin.idea.util.IdeDescriptorRenderers
 import org.jetbrains.kotlin.idea.util.ShortenReferences
 import org.jetbrains.kotlin.psi.*
@@ -70,4 +72,12 @@ fun JetContainerNode.description(): String? {
     return null
 }
 
-fun TextRange.containsInside(offset: Int) = getStartOffset() < offset && offset < getEndOffset()
+fun TextRange.containsInside(offset: Int) = getStartOffset() < offset && offset < getEndOffset()
+
+fun isAutoCreatedItUsage(expression: JetSimpleNameExpression): Boolean {
+    if (expression.getReferencedName() != "it") return false
+    val context = expression.analyze()
+    val reference = expression.getReference() as JetReference?
+    val target = reference?.resolveToDescriptors(context)?.firstOrNull() as? ValueParameterDescriptor? ?: return false
+    return context[BindingContext.AUTO_CREATED_IT, target]
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/rename/RenameKotlinImplicitLambdaParameter.kt

@@ -27,6 +27,7 @@ import org.jetbrains.kotlin.idea.intentions.ReplaceItWithExplicitFunctionLiteral
 import com.intellij.openapi.command.CommandProcessor
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.refactoring.rename.inplace.VariableInplaceRenameHandler
+import org.jetbrains.kotlin.idea.intentions.isAutoCreatedItUsage
 import org.jetbrains.kotlin.idea.util.application.executeWriteCommand
 
 public class RenameKotlinImplicitLambdaParameter: VariableInplaceRenameHandler() {
@@ -34,8 +35,7 @@ public class RenameKotlinImplicitLambdaParameter: VariableInplaceRenameHandler()
         val simpleNameExpression = PsiTreeUtil.findElementOfClassAtOffset(
                 file, editor.getCaretModel().getOffset(), javaClass<JetSimpleNameExpression>(), false)
 
-        return simpleNameExpression != null
-                && ReplaceItWithExplicitFunctionLiteralParamIntention.isAutoCreatedIt(simpleNameExpression)
+        return simpleNameExpression != null && isAutoCreatedItUsage(simpleNameExpression)
     }
 
     override fun invoke(project: Project, editor: Editor, file: PsiFile, dataContext: DataContext?) {