Konsist: check that if `sealed interface` is used in parameter of `Composable`, it has the `@Stable` or `@Immutable` annotation

features/lockscreen/impl/src/main/kotlin/io/element/android/features/lockscreen/impl/pin/model/PinDigit.kt

@@ -16,6 +16,9 @@
 
 package io.element.android.features.lockscreen.impl.pin.model
 
+import androidx.compose.runtime.Immutable
+
+@Immutable
 sealed interface PinDigit {
     data object Empty : PinDigit
     data class Filled(val value: Char) : PinDigit

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/messagecomposer/MessageComposerPresenter.kt

@@ -20,6 +20,7 @@ import android.Manifest
 import android.annotation.SuppressLint
 import android.net.Uri
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.getValue
@@ -409,6 +410,7 @@ class MessageComposerPresenter @Inject constructor(
         }
 }
 
+@Immutable
 sealed interface RoomMemberSuggestion {
     data object Room : RoomMemberSuggestion
     data class Member(val roomMember: RoomMember) : RoomMemberSuggestion

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/MessagesReactionButton.kt

@@ -32,6 +32,7 @@ import androidx.compose.foundation.shape.CornerSize
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
@@ -103,6 +104,7 @@ fun MessagesReactionButton(
     }
 }
 
+@Immutable
 sealed interface MessagesReactionsButtonContent {
     data class Text(val text: String) : MessagesReactionsButtonContent
     data class Icon(@DrawableRes val resourceId: Int) : MessagesReactionsButtonContent

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemStateContent.kt

@@ -16,6 +16,9 @@
 
 package io.element.android.features.messages.impl.timeline.model.event
 
+import androidx.compose.runtime.Immutable
+
+@Immutable
 sealed interface TimelineItemStateContent : TimelineItemEventContent {
     val body: String
 }

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemTextBasedContent.kt

@@ -16,8 +16,10 @@
 
 package io.element.android.features.messages.impl.timeline.model.event
 
+import androidx.compose.runtime.Immutable
 import org.jsoup.nodes.Document
 
+@Immutable
 sealed interface TimelineItemTextBasedContent : TimelineItemEventContent {
     val body: String
     val htmlDocument: Document?

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/components/button/ButtonVisuals.kt

@@ -18,14 +18,16 @@ package io.element.android.libraries.designsystem.components.button
 
 import androidx.compose.material3.Icon
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import io.element.android.libraries.designsystem.theme.components.Button
 import io.element.android.libraries.designsystem.theme.components.IconButton
 import io.element.android.libraries.designsystem.theme.components.IconSource
 import io.element.android.libraries.designsystem.theme.components.TextButton
 
 /**
- * A sealed class that represents the different visual styles that a button can have.
+ * A sealed interface that represents the different visual styles that a button can have.
  */
+@Immutable
 sealed interface ButtonVisuals {
 
     val action: () -> Unit

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/components/list/ListItemContent.kt

@@ -19,6 +19,7 @@ package io.element.android.libraries.designsystem.components.list
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.widthIn
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.DpSize
@@ -34,6 +35,7 @@ import io.element.android.libraries.designsystem.theme.components.Text as TextCo
 /**
  * This is a helper to set default leading and trailing content for [ListItem]s.
  */
+@Immutable
 sealed interface ListItemContent {
     /**
      * Default Switch content for [ListItem].

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/components/Button.kt

@@ -37,6 +37,7 @@ import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.LocalContentColor
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -238,6 +239,7 @@ private fun ButtonInternal(
     }
 }
 
+@Immutable
 sealed interface IconSource {
     val contentDescription: String?
 

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/components/ListItem.kt

@@ -23,6 +23,7 @@ import androidx.compose.material3.LocalContentColor
 import androidx.compose.material3.LocalTextStyle
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -134,6 +135,7 @@ fun ListItem(
 /**
  * The style to use for a [ListItem].
  */
+@Immutable
 sealed interface ListItemStyle {
     data object Default : ListItemStyle
     data object Primary : ListItemStyle

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/components/ListSupportingText.kt

@@ -20,6 +20,7 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.padding
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.ExperimentalTextApi
@@ -82,6 +83,7 @@ fun ListSupportingText(
 object ListSupportingTextDefaults {
 
     /** Specifies the padding to use for the supporting text. */
+    @Immutable
     sealed interface Padding {
         /** No padding. */
         data object None : Padding

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/components/SearchBar.kt

@@ -30,6 +30,7 @@ import androidx.compose.material3.SearchBarColors
 import androidx.compose.material3.SearchBarDefaults
 import androidx.compose.material3.TextFieldDefaults
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -180,6 +181,7 @@ object ElementSearchBarDefaults {
     )
 }
 
+@Immutable
 sealed interface SearchBarResultState<in T> {
     /** No search results are available yet (e.g. because the user hasn't entered a search term). */
     class NotSearching<T> : SearchBarResultState<T>

libraries/matrix/api/build.gradle.kts

@@ -15,7 +15,7 @@
  */
 
 plugins {
-    id("io.element.android-library")
+    id("io.element.android-compose-library")
     id("kotlin-parcelize")
     alias(libs.plugins.anvil)
     kotlin("plugin.serialization") version "1.9.10"

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/MatrixRoomMembersState.kt

@@ -16,6 +16,9 @@
 
 package io.element.android.libraries.matrix.api.room
 
+import androidx.compose.runtime.Immutable
+
+@Immutable
 sealed interface MatrixRoomMembersState {
     data object Unknown : MatrixRoomMembersState
     data class Pending(val prevRoomMembers: List<RoomMember>? = null) : MatrixRoomMembersState

libraries/mediapickers/api/src/main/kotlin/io/element/android/libraries/mediapickers/api/PickerType.kt

@@ -20,8 +20,10 @@ import android.net.Uri
 import androidx.activity.result.PickVisualMediaRequest
 import androidx.activity.result.contract.ActivityResultContract
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.runtime.Immutable
 import io.element.android.libraries.core.mimetype.MimeTypes
 
+@Immutable
 sealed interface PickerType<Input, Output> {
     fun getContract(): ActivityResultContract<Input, Output>
     fun getDefaultRequest(): Input

libraries/textcomposer/impl/src/main/kotlin/io/element/android/libraries/textcomposer/model/MessageComposerMode.kt

@@ -17,11 +17,13 @@
 package io.element.android.libraries.textcomposer.model
 
 import android.os.Parcelable
+import androidx.compose.runtime.Immutable
 import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.core.TransactionId
 import io.element.android.libraries.matrix.ui.components.AttachmentThumbnailInfo
 import kotlinx.parcelize.Parcelize
 
+@Immutable
 sealed interface MessageComposerMode : Parcelable {
     @Parcelize
     data object Normal: MessageComposerMode

libraries/textcomposer/impl/src/main/kotlin/io/element/android/libraries/textcomposer/model/VoiceMessageState.kt

@@ -16,9 +16,11 @@
 
 package io.element.android.libraries.textcomposer.model
 
+import androidx.compose.runtime.Immutable
 import kotlinx.collections.immutable.ImmutableList
 import kotlin.time.Duration
 
+@Immutable
 sealed interface VoiceMessageState {
     data object Idle: VoiceMessageState
 

services/apperror/api/build.gradle.kts

@@ -15,7 +15,7 @@
  */
 
 plugins {
-    id("io.element.android-library")
+    id("io.element.android-compose-library")
 }
 
 android {

services/apperror/api/src/main/kotlin/io/element/android/services/apperror/api/AppErrorState.kt

@@ -16,6 +16,9 @@
 
 package io.element.android.services.apperror.api
 
+import androidx.compose.runtime.Immutable
+
+@Immutable
 sealed interface AppErrorState {
     data object NoError : AppErrorState
 

tests/konsist/src/test/kotlin/io/element/android/tests/konsist/KonsistArchitectureTest.kt

@@ -16,11 +16,16 @@
 
 package io.element.android.tests.konsist
 
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.Immutable
+import androidx.compose.runtime.Stable
 import com.lemonappdev.konsist.api.Konsist
 import com.lemonappdev.konsist.api.ext.list.constructors
 import com.lemonappdev.konsist.api.ext.list.modifierprovider.withSealedModifier
 import com.lemonappdev.konsist.api.ext.list.parameters
+import com.lemonappdev.konsist.api.ext.list.withAnnotationOf
 import com.lemonappdev.konsist.api.ext.list.withNameEndingWith
+import com.lemonappdev.konsist.api.ext.list.withoutAnnotationOf
 import com.lemonappdev.konsist.api.ext.list.withoutConstructors
 import com.lemonappdev.konsist.api.ext.list.withoutName
 import com.lemonappdev.konsist.api.ext.list.withoutParents
@@ -67,4 +72,23 @@ class KonsistArchitectureTest {
             .withoutParents()
             .assertEmpty(additionalMessage = "Sealed class without constructor MUST be sealed interface")
     }
+
+    @Test
+    fun `Composable MUST not have sealed interface in parameter`() {
+        // List all sealed interface without Immutable nor Stable annotation in the project
+        val forbiddenInterfacesForComposableParameter = Konsist.scopeFromProject()
+            .interfaces()
+            .withSealedModifier()
+            .withoutAnnotationOf(Immutable::class, Stable::class)
+            .map { it.fullyQualifiedName }
+
+        Konsist.scopeFromProject()
+            .functions()
+            .withAnnotationOf(Composable::class)
+            .assertTrue(additionalMessage = "Consider adding the @Immutable or @Stable annotation to the sealed interface") {
+                it.parameters.all { param ->
+                    param.type.fullyQualifiedName !in forbiddenInterfacesForComposableParameter
+                }
+            }
+    }
 }