FIR IDE: Ensure all fixes provided by HLDiagnosticFixFactory are of type

QuickFixActionBase.

This allows us to verify in the quickfix tests that the action comes
from a diagnostic-based quickfix, and not an available intention. We
are adding APIs that wrap IntentionActions as QuickFixActionBase.

idea/idea-fir/src/org/jetbrains/kotlin/idea/core/overrideImplement/KtImplementMembersHandler.kt

@@ -12,7 +12,7 @@ import com.intellij.psi.PsiFile
 import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.idea.core.overrideImplement.KtImplementMembersHandler.Companion.getUnimplementedMembers
 import org.jetbrains.kotlin.idea.core.util.KotlinIdeaCoreBundle
-import org.jetbrains.kotlin.idea.fir.api.fixes.diagnosticFixFactory
+import org.jetbrains.kotlin.idea.fir.api.fixes.diagnosticFixFactoryFromIntentionActions
 import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
 import org.jetbrains.kotlin.idea.frontend.api.analyse
 import org.jetbrains.kotlin.idea.frontend.api.fir.diagnostics.KtFirDiagnostic
@@ -120,21 +120,25 @@ internal class KtImplementAsConstructorParameterQuickfix(private val members: Co
 
 object MemberNotImplementedQuickfixFactories {
 
-    val abstractMemberNotImplemented = diagnosticFixFactory(KtFirDiagnostic.AbstractMemberNotImplemented::class) { diagnostic ->
-        getUnimplementedMemberFixes(diagnostic.psi)
-    }
+    val abstractMemberNotImplemented =
+        diagnosticFixFactoryFromIntentionActions(KtFirDiagnostic.AbstractMemberNotImplemented::class) { diagnostic ->
+            getUnimplementedMemberFixes(diagnostic.psi)
+        }
 
-    val abstractClassMemberNotImplemented = diagnosticFixFactory(KtFirDiagnostic.AbstractClassMemberNotImplemented::class) { diagnostic ->
-        getUnimplementedMemberFixes(diagnostic.psi)
-    }
+    val abstractClassMemberNotImplemented =
+        diagnosticFixFactoryFromIntentionActions(KtFirDiagnostic.AbstractClassMemberNotImplemented::class) { diagnostic ->
+            getUnimplementedMemberFixes(diagnostic.psi)
+        }
 
-    val manyInterfacesMemberNotImplemented = diagnosticFixFactory(KtFirDiagnostic.ManyInterfacesMemberNotImplemented::class) { diagnostic ->
-        getUnimplementedMemberFixes(diagnostic.psi)
-    }
+    val manyInterfacesMemberNotImplemented =
+        diagnosticFixFactoryFromIntentionActions(KtFirDiagnostic.ManyInterfacesMemberNotImplemented::class) { diagnostic ->
+            getUnimplementedMemberFixes(diagnostic.psi)
+        }
 
-    val manyImplMemberNotImplemented = diagnosticFixFactory(KtFirDiagnostic.ManyImplMemberNotImplemented::class) { diagnostic ->
-        getUnimplementedMemberFixes(diagnostic.psi, false)
-    }
+    val manyImplMemberNotImplemented =
+        diagnosticFixFactoryFromIntentionActions(KtFirDiagnostic.ManyImplMemberNotImplemented::class) { diagnostic ->
+            getUnimplementedMemberFixes(diagnostic.psi, false)
+        }
 
     @OptIn(ExperimentalStdlibApi::class)
     private fun KtAnalysisSession.getUnimplementedMemberFixes(

idea/idea-fir/src/org/jetbrains/kotlin/idea/fir/api/AbstractHLIntention.kt

@@ -20,7 +20,8 @@ import kotlin.reflect.KClass
 
 abstract class AbstractHLIntention<PSI : KtElement, INPUT : HLApplicatorInput>(
     elementType: KClass<PSI>,
-) : SelfTargetingIntention<PSI>(elementType.java, { "" }, { "" }) {
+    val applicator: HLApplicator<PSI, INPUT>
+) : SelfTargetingIntention<PSI>(elementType.java, applicator::getFamilyName) {
     final override fun isApplicableTo(element: PSI, caretOffset: Int): Boolean {
         val project = element.project// TODO expensive operation, may require traversing the tree up to containing PsiFile
         if (!applicator.isApplicableByPsi(element, project)) return false
@@ -61,6 +62,5 @@ abstract class AbstractHLIntention<PSI : KtElement, INPUT : HLApplicatorInput>(
     }
 
     abstract val applicabilityRange: HLApplicabilityRange<PSI>
-    abstract val applicator: HLApplicator<PSI, INPUT>
     abstract val inputProvider: HLApplicatorInputProvider<PSI, INPUT>
 }

idea/idea-fir/src/org/jetbrains/kotlin/idea/fir/api/fixes/HLDiagnosticFixFactory.kt

@@ -6,15 +6,19 @@
 package org.jetbrains.kotlin.idea.fir.api.fixes
 
 import com.intellij.codeInsight.intention.IntentionAction
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFile
 import org.jetbrains.kotlin.idea.api.applicator.HLApplicator
 import org.jetbrains.kotlin.idea.api.applicator.HLApplicatorInput
 import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
 import org.jetbrains.kotlin.idea.frontend.api.diagnostics.KtDiagnosticWithPsi
+import org.jetbrains.kotlin.idea.quickfix.QuickFixActionBase
 import kotlin.reflect.KClass
 
 sealed class HLDiagnosticFixFactory<DIAGNOSTIC : KtDiagnosticWithPsi<*>> {
-    abstract fun KtAnalysisSession.createQuickFixes(diagnostic: DIAGNOSTIC): List<IntentionAction>
+    abstract fun KtAnalysisSession.createQuickFixes(diagnostic: DIAGNOSTIC): List<QuickFixActionBase<*>>
     abstract val diagnosticClass: KClass<DIAGNOSTIC>
 }
 
@@ -27,11 +31,11 @@ private class HLDiagnosticFixFactoryWithFixedApplicator<DIAGNOSTIC : KtDiagnosti
         createTargets.invoke(this, diagnostic).map { (target, input) -> HLQuickFix(target, input, applicator) }
 }
 
-private class HLDiagnosticFixFactoryWithVariableApplicator<DIAGNOSTIC : KtDiagnosticWithPsi<*>>(
+private class HLDiagnosticFixFactoryUsingQuickFixActionBase<DIAGNOSTIC : KtDiagnosticWithPsi<*>>(
     override val diagnosticClass: KClass<DIAGNOSTIC>,
-    private val createQuickFixes: KtAnalysisSession.(DIAGNOSTIC) -> List<IntentionAction>
+    private val createQuickFixes: KtAnalysisSession.(DIAGNOSTIC) -> List<QuickFixActionBase<*>>
 ) : HLDiagnosticFixFactory<DIAGNOSTIC>() {
-    override fun KtAnalysisSession.createQuickFixes(diagnostic: DIAGNOSTIC): List<IntentionAction> =
+    override fun KtAnalysisSession.createQuickFixes(diagnostic: DIAGNOSTIC): List<QuickFixActionBase<*>> =
         createQuickFixes.invoke(this, diagnostic)
 }
 
@@ -52,19 +56,42 @@ fun <DIAGNOSTIC : KtDiagnosticWithPsi<*>, TARGET_PSI : PsiElement, INPUT : HLApp
     HLDiagnosticFixFactoryWithFixedApplicator(diagnosticClass, applicator, createTargets)
 
 /**
- * Returns a [HLDiagnosticFixFactory] that creates [HLQuickFix]es from a diagnostic.
+ * Returns a [HLDiagnosticFixFactory] that creates [QuickFixActionBase]s from a diagnostic.
  */
 fun <DIAGNOSTIC : KtDiagnosticWithPsi<*>> diagnosticFixFactory(
     diagnosticClass: KClass<DIAGNOSTIC>,
-    createQuickFixes: KtAnalysisSession.(DIAGNOSTIC) -> List<IntentionAction>
+    createQuickFixes: KtAnalysisSession.(DIAGNOSTIC) -> List<QuickFixActionBase<*>>
 ): HLDiagnosticFixFactory<DIAGNOSTIC> =
-    HLDiagnosticFixFactoryWithVariableApplicator(diagnosticClass, createQuickFixes)
+    HLDiagnosticFixFactoryUsingQuickFixActionBase(diagnosticClass, createQuickFixes)
 
 /**
- * Returns a [Collection] of [HLDiagnosticFixFactory] that creates [HLQuickFix]es from diagnostics that have the same type of [PsiElement].
+ * Returns a [Collection] of [HLDiagnosticFixFactory] that creates [QuickFixActionBase]s from diagnostics that have the same type of
+ * [PsiElement].
  */
 fun <DIAGNOSTIC_PSI : PsiElement, DIAGNOSTIC : KtDiagnosticWithPsi<DIAGNOSTIC_PSI>> diagnosticFixFactories(
     vararg diagnosticClasses: KClass<out DIAGNOSTIC>,
-    createQuickFixes: KtAnalysisSession.(DIAGNOSTIC) -> List<IntentionAction>
+    createQuickFixes: KtAnalysisSession.(DIAGNOSTIC) -> List<QuickFixActionBase<*>>
 ): Collection<HLDiagnosticFixFactory<out DIAGNOSTIC>> =
-    diagnosticClasses.map { HLDiagnosticFixFactoryWithVariableApplicator(it, createQuickFixes) }
+    diagnosticClasses.map { HLDiagnosticFixFactoryUsingQuickFixActionBase(it, createQuickFixes) }
+
+/**
+ * Returns a [HLDiagnosticFixFactory] that creates [IntentionAction]s from a diagnostic.
+ */
+fun <DIAGNOSTIC : KtDiagnosticWithPsi<*>> diagnosticFixFactoryFromIntentionActions(
+    diagnosticClass: KClass<DIAGNOSTIC>,
+    createIntentionActions: KtAnalysisSession.(DIAGNOSTIC) -> List<IntentionAction>
+): HLDiagnosticFixFactory<DIAGNOSTIC> {
+    // Wrap the IntentionActions as QuickFixActionBase. This ensures all fixes are of type QuickFixActionBase.
+    val createQuickFixes: KtAnalysisSession.(DIAGNOSTIC) -> List<QuickFixActionBase<*>> = { diagnostic ->
+        val intentionActions = createIntentionActions.invoke(this, diagnostic)
+        intentionActions.map { IntentionActionAsQuickFixWrapper(it, diagnostic.psi) }
+    }
+    return HLDiagnosticFixFactoryUsingQuickFixActionBase(diagnosticClass, createQuickFixes)
+}
+
+private class IntentionActionAsQuickFixWrapper<T : PsiElement>(val intentionAction: IntentionAction, element: T) :
+    QuickFixActionBase<T>(element) {
+    override fun getText(): String = intentionAction.text
+    override fun getFamilyName(): String = intentionAction.familyName
+    override fun invoke(project: Project, editor: Editor?, file: PsiFile?) = intentionAction.invoke(project, editor, file)
+}

idea/idea-fir/src/org/jetbrains/kotlin/idea/fir/intentions/HLAddAccessorIntentions.kt

@@ -25,18 +25,11 @@ import org.jetbrains.kotlin.psi.psiUtil.containingClassOrObject
 import org.jetbrains.kotlin.psi.psiUtil.hasExpectModifier
 
 abstract class HLAddAccessorIntention(private val addGetter: Boolean, private val addSetter: Boolean) :
-    AbstractHLIntention<KtProperty, HLApplicatorInput.Empty>(KtProperty::class) {
+    AbstractHLIntention<KtProperty, HLApplicatorInput.Empty>(KtProperty::class, applicator(addGetter, addSetter)) {
     override val applicabilityRange: HLApplicabilityRange<KtProperty> = applicabilityTarget { ktProperty ->
         if (ktProperty.hasInitializer()) ktProperty.nameIdentifier else ktProperty
     }
 
-    override val applicator: HLApplicator<KtProperty, HLApplicatorInput.Empty> = applicator {
-        applyTo { ktProperty, _, _, editor ->
-            AbstractAddAccessorsIntention.applyTo(ktProperty, editor, addGetter, addSetter)
-        }
-        familyAndActionName(AbstractAddAccessorsIntention.createFamilyName(addGetter, addSetter))
-    }
-
     override val inputProvider: HLApplicatorInputProvider<KtProperty, HLApplicatorInput.Empty> = inputProvider { ktProperty ->
         val symbol = ktProperty.getVariableSymbol() as? KtPropertySymbol ?: return@inputProvider null
         if (symbol.containsAnnotation(JVM_FIELD_CLASS_ID)) return@inputProvider null

idea/idea-fir/src/org/jetbrains/kotlin/idea/fir/intentions/declarations/HLSpecifyExplicitTypeForCallableDeclarationIntention.kt

@@ -6,8 +6,8 @@
 package org.jetbrains.kotlin.idea.fir.intentions.declarations
 
 import org.jetbrains.kotlin.idea.KotlinBundle
-import org.jetbrains.kotlin.idea.fir.api.*
 import org.jetbrains.kotlin.idea.api.applicator.with
+import org.jetbrains.kotlin.idea.fir.api.*
 import org.jetbrains.kotlin.idea.fir.api.applicator.HLApplicabilityRange
 import org.jetbrains.kotlin.idea.fir.api.applicator.inputProvider
 import org.jetbrains.kotlin.idea.fir.applicators.ApplicabilityRanges
@@ -15,16 +15,7 @@ import org.jetbrains.kotlin.idea.fir.applicators.CallableReturnTypeUpdaterApplic
 import org.jetbrains.kotlin.psi.*
 
 class HLSpecifyExplicitTypeForCallableDeclarationIntention :
-    AbstractHLIntention<KtCallableDeclaration, CallableReturnTypeUpdaterApplicator.Type>(
-        KtCallableDeclaration::class
-    ) {
-    override val applicator = CallableReturnTypeUpdaterApplicator.applicator.with {
-        isApplicableByPsi { declaration: KtCallableDeclaration ->
-            if (declaration is KtConstructor<*> || declaration is KtFunctionLiteral) return@isApplicableByPsi false
-            declaration.typeReference == null && (declaration as? KtNamedFunction)?.hasBlockBody() != true
-        }
-        familyAndActionName(KotlinBundle.lazyMessage("specify.return.type.explicitly"))
-    }
+    AbstractHLIntention<KtCallableDeclaration, CallableReturnTypeUpdaterApplicator.Type>(KtCallableDeclaration::class, applicator) {
     override val applicabilityRange: HLApplicabilityRange<KtCallableDeclaration> = ApplicabilityRanges.SELF
 
     override val inputProvider = inputProvider<KtCallableDeclaration, CallableReturnTypeUpdaterApplicator.Type> { declaration ->
@@ -32,4 +23,14 @@ class HLSpecifyExplicitTypeForCallableDeclarationIntention :
         val denotableType = returnType.approximateToSuperPublicDenotable() ?: returnType
         with(CallableReturnTypeUpdaterApplicator.Type) { createByKtType(denotableType) }
     }
+
+    companion object {
+        private val applicator = CallableReturnTypeUpdaterApplicator.applicator.with {
+            isApplicableByPsi { declaration: KtCallableDeclaration ->
+                if (declaration is KtConstructor<*> || declaration is KtFunctionLiteral) return@isApplicableByPsi false
+                declaration.typeReference == null && (declaration as? KtNamedFunction)?.hasBlockBody() != true
+            }
+            familyAndActionName(KotlinBundle.lazyMessage("specify.return.type.explicitly"))
+        }
+    }
 }

idea/idea-fir/src/org/jetbrains/kotlin/idea/quickfix/fixes/AddAccessorsFactories.kt

@@ -5,7 +5,7 @@
 
 package org.jetbrains.kotlin.idea.quickfix.fixes
 
-import org.jetbrains.kotlin.idea.fir.api.fixes.diagnosticFixFactory
+import org.jetbrains.kotlin.idea.fir.api.fixes.diagnosticFixFactoryFromIntentionActions
 import org.jetbrains.kotlin.idea.fir.intentions.HLAddGetterAndSetterIntention
 import org.jetbrains.kotlin.idea.fir.intentions.HLAddGetterIntention
 import org.jetbrains.kotlin.idea.fir.intentions.HLAddSetterIntention
@@ -13,15 +13,16 @@ import org.jetbrains.kotlin.idea.frontend.api.fir.diagnostics.KtFirDiagnostic
 import org.jetbrains.kotlin.psi.KtProperty
 
 object AddAccessorsFactories {
-    val addAccessorsToUninitializedProperty = diagnosticFixFactory(KtFirDiagnostic.MustBeInitializedOrBeAbstract::class) { diagnostic ->
-        val property: KtProperty = diagnostic.psi
-        val addGetter = property.getter == null
-        val addSetter = property.isVar && property.setter == null
-        when {
-            addGetter && addSetter -> listOf(HLAddGetterAndSetterIntention())
-            addGetter -> listOf(HLAddGetterIntention())
-            addSetter -> listOf(HLAddSetterIntention())
-            else -> emptyList()
+    val addAccessorsToUninitializedProperty =
+        diagnosticFixFactoryFromIntentionActions(KtFirDiagnostic.MustBeInitializedOrBeAbstract::class) { diagnostic ->
+            val property: KtProperty = diagnostic.psi
+            val addGetter = property.getter == null
+            val addSetter = property.isVar && property.setter == null
+            when {
+                addGetter && addSetter -> listOf(HLAddGetterAndSetterIntention())
+                addGetter -> listOf(HLAddGetterIntention())
+                addSetter -> listOf(HLAddSetterIntention())
+                else -> emptyList()
+            }
         }
-    }
 }

idea/idea-fir/src/org/jetbrains/kotlin/idea/quickfix/fixes/AddExclExclCallFixFactories.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.idea.quickfix.fixes
 
-import com.intellij.codeInsight.intention.IntentionAction
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.idea.fir.api.fixes.diagnosticFixFactory
 import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
@@ -30,7 +29,7 @@ object AddExclExclCallFixFactories {
         getFixForUnsafeCall(diagnostic.psi)
     }
 
-    private fun KtAnalysisSession.getFixForUnsafeCall(psi: PsiElement): List<IntentionAction> {
+    private fun KtAnalysisSession.getFixForUnsafeCall(psi: PsiElement): List<AddExclExclCallFix> {
         val (target, hasImplicitReceiver) = when (val unwrapped = psi.unwrapParenthesesLabelsAndAnnotations()) {
             // `foo.bar` -> `foo!!.bar`
             is KtDotQualifiedExpression -> unwrapped.receiverExpression to false

idea/idea-fir/src/org/jetbrains/kotlin/idea/quickfix/fixes/TypeMismatchFactories.kt

@@ -5,13 +5,13 @@
 
 package org.jetbrains.kotlin.idea.quickfix.fixes
 
-import com.intellij.codeInsight.intention.IntentionAction
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.idea.fir.api.fixes.diagnosticFixFactory
 import org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession
 import org.jetbrains.kotlin.idea.frontend.api.fir.diagnostics.KtFirDiagnostic
 import org.jetbrains.kotlin.idea.frontend.api.types.KtType
 import org.jetbrains.kotlin.idea.frontend.api.types.KtTypeNullability
+import org.jetbrains.kotlin.idea.quickfix.AddExclExclCallFix
 import org.jetbrains.kotlin.psi.KtExpression
 import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 
@@ -36,7 +36,7 @@ object TypeMismatchFactories {
         psi: PsiElement,
         expectedType: KtType,
         actualType: KtType
-    ): List<IntentionAction> {
+    ): List<AddExclExclCallFix> {
         // TODO: Add more fixes than just AddExclExclCallFix when available.
         if (!expectedType.canBeNull && actualType.canBeNull) {
             // We don't want to offer AddExclExclCallFix if we know the expression is definitely null, e.g.:

idea/idea-fir/src/org/jetbrains/kotlin/idea/quickfix/fixes/WrapWithSafeLetCallFixFactories.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.idea.quickfix.fixes
 
-import com.intellij.codeInsight.intention.IntentionAction
 import com.intellij.openapi.diagnostic.Logger
 import com.intellij.psi.PsiElement
 import com.intellij.psi.SmartPsiElementPointer
@@ -180,7 +179,7 @@ object WrapWithSafeLetCallFixFactories {
     private fun KtAnalysisSession.createWrapWithSafeLetCallInputForNullableExpressionIfMoreThanImmediateParentIsWrapped(
         nullableExpression: KtExpression?,
         isImplicitInvokeCallToMemberProperty: Boolean = false,
-    ): List<IntentionAction> {
+    ): List<HLQuickFix<KtExpression, Input>> {
         val surroundingExpression = nullableExpression?.surroundingExpression
         if (
             surroundingExpression == null ||
@@ -205,7 +204,7 @@ object WrapWithSafeLetCallFixFactories {
         isImplicitInvokeCallToMemberProperty: Boolean = false,
         surroundingExpression: KtExpression? = findParentExpressionAtNullablePosition(nullableExpression)
             ?: nullableExpression?.surroundingExpression
-    ): List<IntentionAction> {
+    ): List<HLQuickFix<KtExpression, Input>> {
         if (nullableExpression == null || surroundingExpression == null) return emptyList()
         val existingNames =
             nullableExpression.containingKtFile.getScopeContextForPosition(nullableExpression).scopes.getPossibleCallableNames()