Prototype LSP

.github/workflows/build.yml

@@ -27,9 +27,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        jdk: [ 11 ]
+        jdk: [ 17 ]
         include:
-        - jdk: 11
+        - jdk: 17
           primary: true
 
     steps:

build.gradle.kts

@@ -2,12 +2,13 @@ import org.jetbrains.changelog.Changelog
 import org.jetbrains.changelog.markdownToHTML
 import org.jetbrains.grammarkit.tasks.GenerateLexerTask
 import org.jetbrains.grammarkit.tasks.GenerateParserTask
+import java.util.EnumSet
 
 plugins {
     // Java support
     id("java")
     // gradle-intellij-plugin - read more: https://github.com/JetBrains/gradle-intellij-plugin
-    id("org.jetbrains.intellij") version "1.13.3"
+    id("org.jetbrains.intellij") version "1.15.0"
     // gradle-changelog-plugin - read more: https://github.com/JetBrains/gradle-changelog-plugin
     id("org.jetbrains.changelog") version "2.1.0"
     // grammarkit - read more: https://github.com/JetBrains/gradle-grammar-kit-plugin
@@ -198,7 +199,7 @@ tasks {
     }
 
     runPluginVerifier {
-        failureLevel.set(org.jetbrains.intellij.tasks.RunPluginVerifierTask.FailureLevel.ALL)
+        failureLevel.set(EnumSet.complementOf(EnumSet.of(org.jetbrains.intellij.tasks.RunPluginVerifierTask.FailureLevel.EXPERIMENTAL_API_USAGES)))
     }
 
     publishPlugin {

gradle.properties

@@ -4,8 +4,8 @@
 pluginGroup = org.nixos.idea
 pluginName = NixIDEA
 pluginVersion = 0.4.0.11
-pluginSinceBuild = 222
+pluginSinceBuild = 232
 pluginUntilBuild = 232.*
 
-platformType = IC
-platformVersion = 2022.2.5
+platformType = IU
+platformVersion = 2023.2.1

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/java/org/nixos/idea/lsp/NixLspServerSupportProvider.java

@@ -0,0 +1,36 @@
+package org.nixos.idea.lsp;
+
+import com.intellij.execution.ExecutionException;
+import com.intellij.execution.configurations.GeneralCommandLine;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.platform.lsp.api.LspServerSupportProvider;
+import com.intellij.platform.lsp.api.ProjectWideLspServerDescriptor;
+import org.jetbrains.annotations.NotNull;
+import org.nixos.idea.file.NixFileType;
+
+@SuppressWarnings("UnstableApiUsage")
+public class NixLspServerSupportProvider implements LspServerSupportProvider {
+    @Override
+    public void fileOpened(@NotNull Project project, @NotNull VirtualFile virtualFile, @NotNull LspServerStarter lspServerStarter) {
+        if (virtualFile.getFileType() == NixFileType.INSTANCE) {
+            lspServerStarter.ensureServerStarted(new NixLspServerDescriptor(project));
+        }
+    }
+
+    private static final class NixLspServerDescriptor extends ProjectWideLspServerDescriptor {
+        public NixLspServerDescriptor(@NotNull Project project) {
+            super(project, "nix --extra-experimental-features nix-command --extra-experimental-features flakes run nixpkgs#nixd");
+        }
+
+        @Override
+        public @NotNull GeneralCommandLine createCommandLine() throws ExecutionException {
+            return new GeneralCommandLine();
+        }
+
+        @Override
+        public boolean isSupportedFile(@NotNull VirtualFile virtualFile) {
+            return virtualFile.getFileType() == NixFileType.INSTANCE;
+        }
+    }
+}

src/main/resources/META-INF/plugin.xml

@@ -5,6 +5,7 @@
     <vendor>NixOS</vendor>
 
     <depends>com.intellij.modules.lang</depends>
+    <depends>com.intellij.modules.platform</depends>
 
     <extensions defaultExtensionNs="com.intellij">
 
@@ -46,6 +47,9 @@
         <colorSettingsPage
                 implementation="org.nixos.idea.settings.NixColorSettingsPage" />
 
+        <platform.lsp.serverSupportProvider
+                implementation="org.nixos.idea.lsp.NixLspServerSupportProvider"/>
+
     </extensions>
 
 </idea-plugin>