Update plugin to support 2026.1 releases

build.gradle.kts

@@ -40,7 +40,7 @@ idea {
 
 plugins {
     idea
-    kotlin("jvm") version "2.1.20"
+    kotlin("jvm") version "2.3.20"
     id("org.jetbrains.intellij.platform.module") version "2.16.0"
     id("org.jetbrains.grammarkit") version "2022.3.2.2"
 
@@ -65,6 +65,7 @@ allprojects {
         all {
             resolutionStrategy.sortArtifacts(ResolutionStrategy.SortOrder.DEPENDENCY_FIRST)
         }
+        create("grammarKitClasspath")
     }
 
     dependencies {
@@ -74,7 +75,7 @@ allprojects {
             exclude("org.jetbrains.kotlin")
         }
         testImplementation("org.assertj:assertj-core:3.24.2")
-        implementation("it.unimi.dsi:fastutil:8.5.12")
+        "grammarKitClasspath"("it.unimi.dsi:fastutil:8.5.12")
 
         intellijPlatform {
             create(platformType, platformVersion)
@@ -206,16 +207,22 @@ project(":") {
         purgeOldFiles.set(true)
     }
 
-    // Ensure fastutil is available for grammar-kit tasks
+    // fastutil is needed by GrammarKit but must not be in implementation — it conflicts with the
+    // platform's bundled version at test runtime, causing NoSuchMethodError in every test.
     tasks.withType<GenerateParserTask> {
-        classpath = configurations.compileClasspath.get()
+        classpath = configurations.compileClasspath.get() + configurations["grammarKitClasspath"]
     }
 
     tasks.withType<KotlinCompile> {
         dependsOn(
             generateRegoLexer,
             generateRegoParser
         )
+        compilerOptions {
+            // prevents Kotlin from generating bridge stubs for interface default methods,
+            // which the plugin verifier flags as deprecated API overrides
+            freeCompilerArgs.add("-jvm-default=no-compatibility")
+        }
     }
 }
 

gradle.properties

@@ -9,14 +9,14 @@ kotlin.code.style=official
 # platformType=IU  # IntelliJ IDEA Ultimate
 # platformType=PY  # PyCharm
 platformType=IU
-platformVersion=2025.3.1
+platformVersion=2026.1.2
 # if you update the version of IDE, also change psiViewerPluginVersion 
 # https://plugins.jetbrains.com/plugin/227-psiviewer/versions
 psiViewerPluginVersion=253.7181
 
 # see https://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/build_number_ranges.html for more information
-sinceBuild=252
-untilBuild=253.*
+sinceBuild=253
+untilBuild=261.*
 
 # these two variables will be overwritten by the release process (i.e. the GitHub action) thanks to the env variables:
 #   - ORG_GRADLE_PROJECT_publishToken

src/main/kotlin/org/openpolicyagent/ideaplugin/ide/actions/utils.kt

@@ -49,7 +49,7 @@ fun getPackageAsString(document: Document, project: Project): String {
     val file = document.virtualFile ?: return ""
     val fileView = PsiManager.getInstance(project).findViewProvider(file) ?: return ""
     val psiTree = fileView.getPsi(RegoLanguage)
-    val children = psiTree.children
+    val children = psiTree!!.children
     for (child in children) {
         if (child is RegoPackage) {
             return child.ref.text
@@ -65,7 +65,7 @@ fun getImportsAsString(document: Document, project: Project): MutableList<String
     val file = document.virtualFile ?: return mutableListOf<String>()
     val fileView = PsiManager.getInstance(project).findViewProvider(file) ?: return mutableListOf<String>()
     val psiTree = fileView.getPsi(RegoLanguage)
-    val children = psiTree.children
+    val children = psiTree!!.children
     var imports = mutableListOf<String>()
     for (child in children) {
         if (child is RegoImport) {

src/main/kotlin/org/openpolicyagent/ideaplugin/ide/extensions/OPAActionToolWindow.kt

@@ -106,7 +106,7 @@ class OPAActionToolWindow {
 
                 //if the tool window currently has a console view with the same opa task
                 //in it, remove the old console before creating a new one
-                val existing = toolWindow.contentManager.findContent(title) ?: null
+                val existing = toolWindow.contentManager.findContent(title)
                 if (existing != null) {
                     toolWindow.contentManager.removeContent(existing, true)
                 }
@@ -131,7 +131,7 @@ class OPAActionToolWindow {
         val consoleContent = ContentImpl(consoleView.component, title, false)
 
         //the tool window shouldn't have two consoles with the sdame title (task)
-        val existing = toolWindow.contentManager.findContent(title) ?: null
+        val existing = toolWindow.contentManager.findContent(title)
         if (existing != null) {
             toolWindow.contentManager.removeContent(existing, true)
         }

src/main/kotlin/org/openpolicyagent/ideaplugin/ide/runconfig/ui/OpaEvalRunCommandEditor.kt

@@ -7,7 +7,6 @@ package org.openpolicyagent.ideaplugin.ide.runconfig.ui
 
 import com.intellij.execution.configuration.EnvironmentVariablesComponent
 import com.intellij.openapi.fileChooser.FileChooserDescriptor
-import com.intellij.openapi.fileChooser.FileTypeDescriptor
 import com.intellij.openapi.options.SettingsEditor
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.roots.ProjectRootManager
@@ -31,10 +30,10 @@ class OpaEvalRunCommandEditor(private val project: Project) : SettingsEditor<Opa
     private var input = TextFieldWithBrowseButton().apply {
         addBrowseFolderListener(
             TextBrowseFolderListener(
-                FileTypeDescriptor("opa input file", ".json")
+                FileChooserDescriptor(true, false, false, false, false, false)
+                    .withFileFilter { it.extension == "json" }
             )
         )
-
     }
     private var bundle = TextFieldWithBrowseButton().apply {
         addBrowseFolderListener(
@@ -94,4 +93,4 @@ class OpaEvalRunCommandEditor(private val project: Project) : SettingsEditor<Opa
     private fun String.toPath(): Path? {
         return nullize()?.let { Paths.get(it) }
     }
-}
+}

src/main/kotlin/org/openpolicyagent/ideaplugin/openapiext/CommandLineExt.kt

@@ -13,7 +13,8 @@ import com.intellij.execution.process.CapturingProcessHandler
 import com.intellij.execution.process.ProcessListener
 import com.intellij.execution.process.ProcessOutput
 import com.intellij.openapi.Disposable
-import com.intellij.openapi.application.runReadAction
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.util.Computable
 import com.intellij.openapi.diagnostic.Logger
 import com.intellij.openapi.progress.ProgressIndicator
 import com.intellij.openapi.progress.ProgressManager
@@ -61,14 +62,14 @@ fun GeneralCommandLine.execute(
         handler.destroyProcess()
     }
 
-    val alreadyDisposed = runReadAction {
+    val alreadyDisposed = ApplicationManager.getApplication().runReadAction(Computable {
         try {
             Disposer.register(owner, cargoKiller)
             false
         } catch (e: IncorrectOperationException) {
             true
         }
-    }
+    })
 
     if (alreadyDisposed) {
         // On the one hand, this seems fishy,

src/test/kotlin/org/openpolicyagent/ideaplugin/ide/runconfig/RunConfigurationTestBase.kt

@@ -9,8 +9,8 @@ import com.intellij.execution.ExecutionResult
 import com.intellij.execution.configuration.EnvironmentVariablesData
 import com.intellij.execution.configurations.RunConfiguration
 import com.intellij.execution.executors.DefaultRunExecutor
-import com.intellij.execution.process.ProcessAdapter
 import com.intellij.execution.process.ProcessEvent
+import com.intellij.execution.process.ProcessListener
 import com.intellij.execution.process.ProcessOutput
 import com.intellij.execution.process.ProcessOutputTypes
 import com.intellij.execution.runners.ExecutionEnvironmentBuilder
@@ -78,7 +78,7 @@ abstract class RunConfigurationTestBase : OpaWithRealProjectTestBase() {
 /**
  * this class has been borrowed from IntelliJ rust plugin
  */
-class AnsiAwareCapturingProcessAdapter : ProcessAdapter() {
+class AnsiAwareCapturingProcessAdapter : ProcessListener {
     val output = ProcessOutput()
 
     override fun onTextAvailable(event: ProcessEvent, outputType: Key<*>) =
@@ -88,7 +88,6 @@ class AnsiAwareCapturingProcessAdapter : ProcessAdapter() {
             output.appendStdout(event.text)
         }
 
-
     override fun processTerminated(event: ProcessEvent) {
         output.exitCode = event.exitCode
     }