Support Kotlin 2.3.20 (#134)

Author: skydoves

README.md

@@ -234,7 +234,8 @@ It’s **strongly recommended to use the exact same Kotlin version** as this lib
 
 | Stability Analyzer | Kotlin |
 |--------------------|-------------|
-| 0.6.5+             | 2.3.0 |
+| 0.7.1+             | 2.3.20 |
+| 0.6.5~0.7.0        | 2.3.0 |
 | 0.4.0~0.6.4        | 2.2.21 |
 
 ### TraceRecomposition Annotation

docs/gradle-plugin/getting-started.md

@@ -45,7 +45,8 @@ The Compose Stability Analyzer compiler plugin is tightly coupled to the Kotlin
 
 | Stability Analyzer | Kotlin |
 |--------------------|--------|
-| 0.6.5+             | 2.3.0  |
+| 0.7.1+             | 2.3.20 |
+| 0.6.5 ~ 0.7.0     | 2.3.0  |
 | 0.4.0 ~ 0.6.4     | 2.2.21 |
 
 ## What's Included

docs/version-map.md

@@ -6,7 +6,8 @@ It is **strongly recommended to use the exact same Kotlin version** as this libr
 
 | Stability Analyzer | Kotlin |
 |--------------------|--------|
-| 0.6.5+             | 2.3.0  |
+| 0.7.1+             | 2.3.20 |
+| 0.6.5 ~ 0.7.0     | 2.3.0  |
 | 0.4.0 ~ 0.6.4     | 2.2.21 |
 
 !!! warning "Version mismatch"
@@ -26,6 +27,7 @@ The Compose Stability Analyzer works alongside the Compose compiler. Ensure your
 
 | Kotlin | Compose Compiler |
 |--------|-----------------|
+| 2.3.20 | Bundled with Kotlin |
 | 2.3.0  | Bundled with Kotlin |
 | 2.2.21 | Bundled with Kotlin |
 

gradle.properties

@@ -51,7 +51,7 @@ kotlin.mpp.androidGradlePluginCompatibility.nowarn=true
 
 # Maven publishing
 GROUP=com.github.skydoves
-VERSION_NAME=0.7.0
+VERSION_NAME=0.7.1-SNAPSHOT
 
 POM_URL=https://github.com/skydoves/compose-stability-analyzer/
 POM_SCM_URL=https://github.com/skydoves/compose-stability-analyzer/

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 [versions]
 compiler = "1.5.15"
 junit = "4.13.2"
-kotlin = "2.3.0"
+kotlin = "2.3.20"
 dokka = "2.1.0"
 jvmTarget = "17"
 kotlinxCollectionsImmutable = "0.4.0"
@@ -13,7 +13,7 @@ androidGradlePlugin = "8.13.1"
 androidxActivity = "1.11.0"
 androidxComposeBom = "2025.12.00"
 jetbrains-compose = "1.9.3"
-compose-stability-analyzer = "0.6.2"
+compose-stability-analyzer = "0.7.1-SNAPSHOT"
 runtimeAnnotation = "1.9.0"
 spotless = "6.21.0"
 shadow = "8.1.1"

stability-compiler/src/main/kotlin/com/skydoves/compose/stability/compiler/ComposableStabilityChecker.kt

@@ -18,8 +18,9 @@ package com.skydoves.compose.stability.compiler
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.fir.analysis.checkers.MppCheckerKind
 import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
-import org.jetbrains.kotlin.fir.analysis.checkers.declaration.FirSimpleFunctionChecker
-import org.jetbrains.kotlin.fir.declarations.FirSimpleFunction
+import org.jetbrains.kotlin.fir.analysis.checkers.declaration.FirCallableDeclarationChecker
+import org.jetbrains.kotlin.fir.declarations.FirCallableDeclaration
+import org.jetbrains.kotlin.fir.declarations.FirFunction
 import org.jetbrains.kotlin.fir.declarations.getAnnotationByClassId
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
@@ -29,16 +30,20 @@ import org.jetbrains.kotlin.name.Name
  * FIR checker for composable functions.
  * Currently unused - all stability analysis is performed in the IR phase.
  * This is kept as infrastructure for potential future FIR-phase checks.
+ *
+ * Note: Uses [FirCallableDeclarationChecker] instead of `FirSimpleFunctionChecker` because
+ * `FirSimpleFunction` was renamed to `FirNamedFunction` in Kotlin 2.3.20, causing linkage failures.
  */
-public object ComposableStabilityChecker : FirSimpleFunctionChecker(MppCheckerKind.Common) {
+public object ComposableStabilityChecker : FirCallableDeclarationChecker(MppCheckerKind.Common) {
 
   private val COMPOSABLE_FQ_NAME = ClassId(
     FqName("androidx.compose.runtime"),
     Name.identifier("Composable"),
   )
 
   context(ctx: CheckerContext, _: DiagnosticReporter)
-  override fun check(declaration: FirSimpleFunction) {
+  override fun check(declaration: FirCallableDeclaration) {
+    if (declaration !is FirFunction) return
     if (declaration.symbol.getAnnotationByClassId(COMPOSABLE_FQ_NAME, ctx.session) == null) {
       return
     }

stability-compiler/src/main/kotlin/com/skydoves/compose/stability/compiler/lower/OriginCompat.kt

@@ -0,0 +1,43 @@
+/*
+ * Designed and developed by 2025 skydoves (Jaewoong Eum)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.skydoves.compose.stability.compiler.lower
+
+import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
+
+/**
+ * Compatibility wrapper for [IrDeclarationOrigin] constants.
+ *
+ * In Kotlin 2.3.20, the types of origin constants like [IrDeclarationOrigin.DEFINED] changed
+ * from `IrDeclarationOriginImpl` to `IrDeclarationOrigin`, causing [NoSuchMethodError] when
+ * compiled against an older Kotlin version. This object uses reflection-based lookups to
+ * access these constants safely across Kotlin versions.
+ */
+internal object OriginCompat {
+
+  private fun getConstant(name: String): Lazy<IrDeclarationOrigin> = lazy {
+    IrDeclarationOrigin.Companion::class.java
+      .getDeclaredMethod("get$name")
+      .invoke(IrDeclarationOrigin.Companion) as IrDeclarationOrigin
+  }
+
+  val DEFINED: IrDeclarationOrigin by getConstant("DEFINED")
+  val IR_EXTERNAL_DECLARATION_STUB: IrDeclarationOrigin by getConstant(
+    "IR_EXTERNAL_DECLARATION_STUB",
+  )
+  val IR_EXTERNAL_JAVA_DECLARATION_STUB: IrDeclarationOrigin by getConstant(
+    "IR_EXTERNAL_JAVA_DECLARATION_STUB",
+  )
+}

stability-compiler/src/main/kotlin/com/skydoves/compose/stability/compiler/lower/RecompositionIrBuilder.kt

@@ -26,7 +26,6 @@ import org.jetbrains.kotlin.ir.builders.irCall
 import org.jetbrains.kotlin.ir.builders.irGet
 import org.jetbrains.kotlin.ir.builders.irInt
 import org.jetbrains.kotlin.ir.builders.irString
-import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
 import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.declarations.IrValueParameter
 import org.jetbrains.kotlin.ir.declarations.IrVariable
@@ -199,7 +198,7 @@ public class RecompositionIrBuilder(
       parent = function,
       startOffset = UNDEFINED_OFFSET,
       endOffset = UNDEFINED_OFFSET,
-      origin = IrDeclarationOrigin.DEFINED,
+      origin = OriginCompat.DEFINED,
       name = Name.identifier("_tracker"),
       type = trackerClassSymbol!!.defaultType,
       isVar = false,

stability-compiler/src/main/kotlin/com/skydoves/compose/stability/compiler/lower/StabilityAnalyzerTransformer.kt

@@ -21,7 +21,6 @@ import org.jetbrains.kotlin.backend.common.IrElementTransformerVoidWithContext
 import org.jetbrains.kotlin.backend.common.extensions.IrPluginContext
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.declarations.IrClass
-import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
 import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.expressions.IrConst
 import org.jetbrains.kotlin.ir.expressions.IrExpression
@@ -917,8 +916,8 @@ public class StabilityAnalyzerTransformer(
 
       // Check 1: External library classes (from compiled JARs/AARs)
       val origin = clazz.origin
-      if (origin == IrDeclarationOrigin.IR_EXTERNAL_DECLARATION_STUB ||
-        origin == IrDeclarationOrigin.IR_EXTERNAL_JAVA_DECLARATION_STUB
+      if (origin == OriginCompat.IR_EXTERNAL_DECLARATION_STUB ||
+        origin == OriginCompat.IR_EXTERNAL_JAVA_DECLARATION_STUB
       ) {
         return true
       }