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Adding support for eclipse.jdt.ls
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‎.dockerignore

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# Linked packages are problematic during build, npm i during start will fix it
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node_modules/@typefox/monaco-editor-react
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node_modules/example-client-vite
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node_modules/example-client-webpack
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node_modules/monaco-languageclient
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node_modules/monaco-editor-wrapper
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node_modules/monaco-languageclient-examples
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node_modules/vscode-ws-jsonrpc
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## Linked packages are problematic during build, npm i during start will fix it
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#node_modules/@typefox/monaco-editor-react
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#node_modules/example-client-vite
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#node_modules/example-client-webpack
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#node_modules/monaco-languageclient
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#node_modules/monaco-editor-wrapper
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#node_modules/monaco-languageclient-examples
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#node_modules/vscode-ws-jsonrpc
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node_modules

‎index.html

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@@ -44,6 +44,11 @@ <h3>Python</h3>
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Please execute <b><code>npm run start:example:server:python</code></b> beforehand:<br>
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<a href="./packages/examples/python.html">Python Language Client & Pyright Language Server (Web Socket)</a><br>
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<h3>Java</h3>
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Requires docker. Please execute <b><code>docker compose -f ./packages/examples/resources/eclipse.jdt.ls/docker-compose.yml up -d</code></b> beforehand:<br>
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<a href="./packages/examples/eclipse.jdt.ls.html">Java Language Client & Language Server (Web Socket)</a>
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<br>
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<h3>Groovy</h3>
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Requires docker. Please execute <b><code>docker compose -f ./packages/examples/resources/groovy/docker-compose.yml up -d</code></b> beforehand:<br>
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<a href="./packages/examples/groovy.html">Groovy Language Client & Language Server (Web Socket)</a>

‎package-lock.json

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‎package.json

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"start:example:server:json": "npm run start:server:json --workspace packages/examples",
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"start:example:server:python": "npm run start:server:python --workspace packages/examples",
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"start:example:server:groovy": "npm run start:server:groovy --workspace packages/examples",
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"start:example:server:jdtls": "npm run start:server:jdtls --workspace packages/examples",
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"release:prepare": "npm run reset:repo && npm ci && npm run build && npm run lint && npm run test:run",
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"reset:repo": "git clean -f -X -d",
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"test": "vitest",

‎packages/examples/.gitignore

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resources/groovy/external
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resources/eclipse.jdt.ls/ls
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resources/eclipse.jdt.ls/*.tar.gz
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resources/vsix

‎packages/examples/eclipse.jdt.ls.html

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<!DOCTYPE html>
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<html>
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<head>
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<title>Java Language Client & Language Server (Web Socket)</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="stylesheet" href="style.css">
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</head>
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<body>
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<h2>Java Language Client & Language Server (Web Socket)</h2>
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<button type="button" id="button-start">Start</button>
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<button type="button" id="button-dispose">Dispose</button>
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<div id="monaco-editor-root" style="width:800px;height:600px;border:1px solid grey"></div>
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<script type="module">
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import { configureMonacoWorkers, runEclipseJdtLsClient } from "./src/eclipse.jdt.ls/client/main.ts";
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configureMonacoWorkers();
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runEclipseJdtLsClient();
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</script>
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</body>
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</html>

‎packages/examples/package.json

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"@codingame/monaco-vscode-keybindings-service-override": "~7.0.3",
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"@codingame/monaco-vscode-lifecycle-service-override": "~7.0.3",
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"@codingame/monaco-vscode-localization-service-override": "~7.0.3",
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"@codingame/monaco-vscode-java-default-extension": "~7.0.3",
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"@codingame/monaco-vscode-javascript-default-extension": "~7.0.3",
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"@codingame/monaco-vscode-json-default-extension": "~7.0.3",
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"@codingame/monaco-vscode-python-default-extension": "~7.0.3",
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"build:bundle": "vite --config vite.bundle.config.ts build",
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"start:server:json": "node --loader ts-node/esm src/json/server/direct.ts",
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"start:server:python": "node --loader ts-node/esm src/python/server/direct.ts",
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"start:server:groovy": "node --watch --loader ts-node/esm src/groovy/server/direct.ts",
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"start:server:groovy": "node --watch --loader ts-node/esm src/groovy/server/direct.ts",
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"start:server:jdtls": "vite-node src/eclipse.jdt.ls/server/direct.ts",
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"langium:generate": "langium generate --file ./src/langium/statemachine/config/langium-config.json"
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}
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}

‎packages/examples/resources/eclipse.jdt.ls/Dockerfile

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FROM eclipse-temurin:17-jdk
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ARG MLC_PATH=/home/mlc
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ARG ECLIPSE_JDT_PATH=${MLC_PATH}/packages/examples/resources/eclipse.jdt.ls/ls
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ARG JDT_TAR_URL=https://download.eclipse.org/jdtls/milestones/1.37.0/jdt-language-server-1.37.0-202406271335.tar.gz
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ARG JDT_TAR_LOCAL=eclipse.jdt.ls.tar.gz
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RUN apt update \
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&& apt upgrade -y
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RUN apt install -y wget
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RUN curl https://get.volta.sh | bash
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ENV VOLTA_FEATURE_PNPM=1
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ENV VOLTA_HOME "/root/.volta"
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ENV PATH "$VOLTA_HOME/bin:$PATH"
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RUN volta install node@20
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RUN mkdir -p ${MLC_PATH}
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COPY ./ ${MLC_PATH}
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RUN mkdir -p ${ECLIPSE_JDT_PATH} \
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&& cd ${ECLIPSE_JDT_PATH} \
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&& wget -O ${JDT_TAR_LOCAL} ${JDT_TAR_URL} \
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&& tar -xzf ${JDT_TAR_LOCAL}
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WORKDIR ${MLC_PATH}
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CMD ["/bin/bash", "npm i && npm run start:example:server:jdtls"]

‎packages/examples/resources/eclipse.jdt.ls/docker-compose.yml

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services:
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eclipsejdtls:
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build:
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dockerfile: ./packages/examples/resources/eclipse.jdt.ls/Dockerfile
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context: ../../../..
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environment:
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- MLC_PATH=/home/mlc
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- JDT_TAR_URL=https://download.eclipse.org/jdtls/milestones/1.37.0/jdt-language-server-1.37.0-202406271335.tar.gz
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- JDT_TAR_LOCAL=eclipse.jdt.ls.tar.gz
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command: [
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"bash", "-c", "npm i && npm run start:example:server:jdtls"
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]
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ports:
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- 30003:30003
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working_dir: /home/mlc
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container_name: eclipsejdtls

‎packages/examples/resources/eclipse.jdt.ls/workspace/hello.java

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public static void main (String[] args) {
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System.out.println("Hello World!");
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}

‎packages/examples/resources/groovy/Dockerfile

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FROM gradle:7-jdk17-focal
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ARG MLC_PATH=/home/gradle/mlc
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RUN apt update \
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&& apt upgrade -y \
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&& apt install -y ca-certificates curl gnupg unzip
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RUN mkdir -p /etc/apt/keyrings \
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&& curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
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&& echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_20.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list \
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&& apt update \
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&& apt install -y nodejs
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RUN curl https://get.volta.sh | bash
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ENV VOLTA_FEATURE_PNPM=1
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ENV VOLTA_HOME "/root/.volta"
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ENV PATH "$VOLTA_HOME/bin:$PATH"
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RUN volta install node@20
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RUN git clone https://github.com/GroovyLanguageServer/groovy-language-server \
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&& cd groovy-language-server \
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&& ./gradlew build \
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&& cd ..
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RUN mkdir -p /home/gradle/mlc
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RUN mkdir -p ${MLC_PATH}
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COPY ./ /home/gradle/mlc/
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COPY ./ ${MLC_PATH}
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WORKDIR /home/gradle/mlc
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WORKDIR ${MLC_PATH}

‎packages/examples/resources/groovy/docker-compose.yml

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version: '3'
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services:
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groovyls:
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build:

‎packages/examples/src/eclipse.jdt.ls/client/main.ts

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/* --------------------------------------------------------------------------------------------
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* Copyright (c) 2024 TypeFox and others.
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* Licensed under the MIT License. See LICENSE in the package root for license information.
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* ------------------------------------------------------------------------------------------ */
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import * as vscode from 'vscode';
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import getKeybindingsServiceOverride from '@codingame/monaco-vscode-keybindings-service-override';
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// this is required syntax highlighting
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import '@codingame/monaco-vscode-java-default-extension';
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import { MonacoEditorLanguageClientWrapper, UserConfig } from 'monaco-editor-wrapper';
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import { useWorkerFactory } from 'monaco-editor-wrapper/workerFactory';
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import { RegisteredFileSystemProvider, RegisteredMemoryFile } from '@codingame/monaco-vscode-files-service-override';
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import helloJavaCode from '../../../resources/eclipse.jdt.ls/workspace/hello.java?raw';
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import { eclipseJdtLsConfig } from '../config';
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export const configureMonacoWorkers = () => {
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useWorkerFactory({
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ignoreMapping: true,
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workerLoaders: {
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editorWorkerService: () => new Worker(new URL('monaco-editor/esm/vs/editor/editor.worker.js', import.meta.url), { type: 'module' }),
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}
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});
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};
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export const runEclipseJdtLsClient = () => {
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const helloJavaUri = vscode.Uri.file(`${eclipseJdtLsConfig.basePath}/workspace/hello.java`);
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const fileSystemProvider = new RegisteredFileSystemProvider(false);
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fileSystemProvider.registerFile(new RegisteredMemoryFile(helloJavaUri, helloJavaCode));
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const userConfig: UserConfig = {
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wrapperConfig: {
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serviceConfig: {
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userServices: {
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...getKeybindingsServiceOverride(),
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},
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debugLogging: true
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},
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editorAppConfig: {
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$type: 'extended',
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codeResources: {
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main: {
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text: helloJavaCode,
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uri: `${eclipseJdtLsConfig.basePath}/workspace/hello.java`
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}
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},
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useDiffEditor: false,
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userConfiguration: {
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json: JSON.stringify({
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'workbench.colorTheme': 'Default Dark Modern',
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'editor.guides.bracketPairsHorizontal': 'active'
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})
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}
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}
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},
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languageClientConfig: {
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languageId: 'java',
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options: {
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$type: 'WebSocketUrl',
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url: 'ws://localhost:30003/jdtls'
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},
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clientOptions: {
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documentSelector: ['java'],
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workspaceFolder: {
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index: 0,
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name: 'workspace',
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uri: vscode.Uri.parse(`${eclipseJdtLsConfig.basePath}/workspace`)
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},
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},
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}
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};
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const wrapper = new MonacoEditorLanguageClientWrapper();
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const htmlElement = document.getElementById('monaco-editor-root');
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try {
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document.querySelector('#button-start')?.addEventListener('click', async () => {
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await wrapper.dispose();
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await wrapper.initAndStart(userConfig, htmlElement);
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});
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document.querySelector('#button-dispose')?.addEventListener('click', async () => {
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await wrapper.dispose();
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});
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} catch (e) {
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console.error(e);
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}
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};

‎packages/examples/src/eclipse.jdt.ls/config.ts

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/* --------------------------------------------------------------------------------------------
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* Copyright (c) 2024 TypeFox and others.
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* Licensed under the MIT License. See LICENSE in the package root for license information.
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* ------------------------------------------------------------------------------------------ */
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export const eclipseJdtLsConfig = {
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port: 30003,
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path: '/jdtls',
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basePath: '/home/mlc/packages/examples/resources/eclipse.jdt.ls'
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};

‎packages/examples/src/eclipse.jdt.ls/server/direct.ts

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/* --------------------------------------------------------------------------------------------
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* Copyright (c) 2024 TypeFox and others.
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* Licensed under the MIT License. See LICENSE in the package root for license information.
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* ------------------------------------------------------------------------------------------ */
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import { runEclipseJdtLs } from './main.js';
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runEclipseJdtLs();

‎packages/examples/src/eclipse.jdt.ls/server/main.ts

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/* --------------------------------------------------------------------------------------------
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* Copyright (c) 2024 TypeFox and others.
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* Licensed under the MIT License. See LICENSE in the package root for license information.
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* ------------------------------------------------------------------------------------------ */
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import { runLanguageServer } from '../../common/node/language-server-runner.js';
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import { LanguageName } from '../../common/node/server-commons.js';
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import { eclipseJdtLsConfig } from '../config.js';
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export const runEclipseJdtLs = () => {
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runLanguageServer({
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serverName: 'Eclipse JDT LS',
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pathName: eclipseJdtLsConfig.path,
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serverPort: eclipseJdtLsConfig.port,
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runCommand: LanguageName.java,
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runCommandArgs: [
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'-Declipse.application=org.eclipse.jdt.ls.core.id1',
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'-Dosgi.bundles.defaultStartLevel=4',
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'-Declipse.product=org.eclipse.jdt.ls.core.product',
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'-Dlog.level=ALL',
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'-Xmx1G',
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'--add-modules=ALL-SYSTEM',
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'--add-opens',
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'java.base/java.util=ALL-UNNAMED',
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'--add-opens',
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'java.base/java.lang=ALL-UNNAMED',
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'-jar',
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`${eclipseJdtLsConfig.basePath}/ls/plugins/org.eclipse.equinox.launcher_1.6.900.v20240613-2009.jar`,
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'-configuration',
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`${eclipseJdtLsConfig.basePath}/ls/config_linux`,
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'-data',
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`${eclipseJdtLsConfig.basePath}/workspace`
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],
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wsServerOptions: {
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noServer: true,
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perMessageDeflate: false
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}
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});
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};

‎packages/examples/src/groovy/client/main.ts

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};
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const code = `package test.org;
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import java.io.File ;
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import java.io.File;
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File file = new File("E:/Example.txt");
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`;
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