Replace explicit parameter with it: don't suggest if overload resolution ambiguity error occurs

#KT-20795 Fixed

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

@@ -27,14 +27,16 @@ import com.intellij.usageView.UsageInfo
 import org.jetbrains.kotlin.descriptors.ParameterDescriptor
 import org.jetbrains.kotlin.descriptors.impl.AnonymousFunctionDescriptor
 import org.jetbrains.kotlin.idea.KotlinBundle
+import org.jetbrains.kotlin.idea.analysis.analyzeAsReplacement
+import org.jetbrains.kotlin.idea.caches.resolve.analyze
+import org.jetbrains.kotlin.idea.core.copied
 import org.jetbrains.kotlin.idea.references.resolveMainReferenceToDescriptors
-import org.jetbrains.kotlin.psi.KtFunctionLiteral
-import org.jetbrains.kotlin.psi.KtNameReferenceExpression
-import org.jetbrains.kotlin.psi.KtSimpleNameExpression
-import org.jetbrains.kotlin.psi.psiUtil.anyDescendantOfType
-import org.jetbrains.kotlin.psi.psiUtil.endOffset
-import org.jetbrains.kotlin.psi.psiUtil.getParentOfType
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.*
 import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
+import org.jetbrains.kotlin.resolve.calls.callUtil.getResolvedCall
+import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
+import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 
 class ReplaceExplicitFunctionLiteralParamWithItIntention : PsiElementBaseIntentionAction() {
     override fun getFamilyName() = KotlinBundle.message("replace.explicit.lambda.parameter.with.it")
@@ -50,6 +52,19 @@ class ReplaceExplicitFunctionLiteralParamWithItIntention : PsiElementBaseIntenti
                 literal.usesName(element.text) && (!literal.hasParameterSpecification() || literal.usesName("it"))
             }) return false
 
+        val lambda = functionLiteral.parent as? KtLambdaExpression ?: return false
+        val call = lambda.getStrictParentOfType<KtCallExpression>()
+        if (call != null) {
+            val argumentIndex = call.valueArguments.indexOfFirst { it.getArgumentExpression() == lambda }
+            val callOrQualified = call.getQualifiedExpressionForSelectorOrThis()
+            val newCallOrQualified = callOrQualified.copied()
+            val newCall = newCallOrQualified.safeAs<KtQualifiedExpression>()?.callExpression ?: newCallOrQualified.safeAs() ?: return false
+            val newArgument = newCall.valueArguments.getOrNull(argumentIndex) ?: newCall.lambdaArguments.singleOrNull() ?: return false
+            newArgument.replace(KtPsiFactory(element).createLambdaExpression("", "TODO()"))
+            val newContext = newCallOrQualified.analyzeAsReplacement(callOrQualified, callOrQualified.analyze(BodyResolveMode.PARTIAL))
+            if (newCallOrQualified.getResolvedCall(newContext)?.resultingDescriptor == null) return false
+        }
+
         text = KotlinBundle.message("replace.explicit.parameter.0.with.it", parameter.name.toString())
         return true
     }

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_inPropertyInitializer.kt

@@ -0,0 +1,5 @@
+fun foo() {
+    val a: (Int) -> Unit = { <caret>a -> bar(a) }
+}
+
+fun bar(i: Int) {}

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_inPropertyInitializer.kt.after

@@ -0,0 +1,5 @@
+fun foo() {
+    val a: (Int) -> Unit = { bar(it) }
+}
+
+fun bar(i: Int) {}

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_qualifiedExpression.kt

@@ -0,0 +1,7 @@
+fun test() {
+    C().foo { <caret>i -> i + 1 }
+}
+
+class C {
+    fun foo(f: (Int) -> Int) {}
+}

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_qualifiedExpression.kt.after

@@ -0,0 +1,7 @@
+fun test() {
+    C().foo { it + 1 }
+}
+
+class C {
+    fun foo(f: (Int) -> Int) {}
+}

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_overloadResolutionAmbiguity.kt

@@ -0,0 +1,7 @@
+// IS_APPLICABLE: false
+fun test() {
+    foo { <caret>i -> i + 1 }
+}
+
+fun foo(f: (Int) -> Int) {}
+fun foo(f: (Int, Int) -> Int) {}

idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_overloadResolutionAmbiguity2.kt

@@ -0,0 +1,9 @@
+// IS_APPLICABLE: false
+fun test() {
+    C().foo { <caret>i -> i + 1 }
+}
+
+class C {
+    fun foo(f: (Int) -> Int) {}
+    fun foo(f: (Int, Int) -> Int) {}
+}

idea/tests/org/jetbrains/kotlin/idea/intentions/IntentionTestGenerated.java

@@ -14634,11 +14634,21 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_formatsProperly.kt");
         }
 
+        @TestMetadata("applicable_inPropertyInitializer.kt")
+        public void testApplicable_inPropertyInitializer() throws Exception {
+            runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_inPropertyInitializer.kt");
+        }
+
         @TestMetadata("applicable_nestedLiteralsNoUseInside.kt")
         public void testApplicable_nestedLiteralsNoUseInside() throws Exception {
             runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_nestedLiteralsNoUseInside.kt");
         }
 
+        @TestMetadata("applicable_qualifiedExpression.kt")
+        public void testApplicable_qualifiedExpression() throws Exception {
+            runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/applicable_qualifiedExpression.kt");
+        }
+
         @TestMetadata("notApplicable_alreadyUsesImplicitIt.kt")
         public void testNotApplicable_alreadyUsesImplicitIt() throws Exception {
             runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_alreadyUsesImplicitIt.kt");
@@ -14674,6 +14684,16 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_notFunctionLiteralParameter.kt");
         }
 
+        @TestMetadata("notApplicable_overloadResolutionAmbiguity.kt")
+        public void testNotApplicable_overloadResolutionAmbiguity() throws Exception {
+            runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_overloadResolutionAmbiguity.kt");
+        }
+
+        @TestMetadata("notApplicable_overloadResolutionAmbiguity2.kt")
+        public void testNotApplicable_overloadResolutionAmbiguity2() throws Exception {
+            runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_overloadResolutionAmbiguity2.kt");
+        }
+
         @TestMetadata("notApplicable_parameterHasExplicitType.kt")
         public void testNotApplicable_parameterHasExplicitType() throws Exception {
             runTest("idea/testData/intentions/replaceExplicitFunctionLiteralParamWithIt/notApplicable_parameterHasExplicitType.kt");