Build vscode-java against jdt-core-incubator's dom-with-javac branch

Signed-off-by: Fred Bricon <[email protected]>

.github/workflows/javac-upload.yml

@@ -0,0 +1,95 @@
+name: javac-upload
+
+on:
+    schedule:
+      - cron: '0 */8 * * *'
+    workflow_dispatch:
+
+jobs:
+  build-javac-support:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          repository: 'eclipse-jdtls/eclipse-jdt-core-incubator'
+          ref: 'dom-with-javac'
+          path: eclipse-jdt-core-incubator
+
+      - uses: actions/checkout@v4
+        with:
+          repository: 'eclipse-jdtls/eclipse.jdt.ls'
+          path: eclipse.jdt.ls
+
+      - uses: actions/checkout@v4
+        with:
+          repository: 'redhat-developer/vscode-java'
+          path: vscode-java
+
+      - name: Set Up Java
+        uses: actions/setup-java@v4
+        with:
+          java-version: '22'
+          distribution: 'adopt'
+          cache: 'maven'
+
+      - name: Set up Maven
+        uses: stCarolas/setup-maven@d6af6abeda15e98926a57b5aa970a96bb37f97d1 # v5
+        with:
+          maven-version: 3.9.6
+
+      - name: Build JDT Core / Javac
+        run: |
+          cd eclipse-jdt-core-incubator
+          mvn clean install -DskipTests
+          cd ..
+
+      - name: Apply JDT-LS changes
+        run: |
+          cd eclipse.jdt.ls
+          gh pr checkout https://github.com/eclipse-jdtls/eclipse.jdt.ls/pull/3123
+          git rebase master
+          cd ..
+        env:
+          GH_TOKEN: ${{ github.token }}
+
+      - name: Apply VS Code Java changes
+        run: |
+          cd vscode-java
+          gh pr checkout https://github.com/redhat-developer/vscode-java/pull/3558
+          git rebase master
+        env:
+          GH_TOKEN: ${{ github.token }}
+
+      - name: Set Up NodeJS
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+      - name: Install NodeJS dependencies
+        run: npm install -g typescript "@vscode/vsce"
+
+      - name: Build vscode-java
+        run: |
+          npm ci
+      - name: Build JDT-LS
+        run: |
+          rm -rf ./out
+          npm run build-server
+          echo "EXT_VERSION=$(cat package.json | jq -r .version)" >> $GITHUB_ENV
+      - name: Prepare Lombok Support
+        run: |
+          npx gulp download_lombok
+      - name: Package vscode-java
+        run: |
+          npx gulp prepare_pre_release
+          vsce package --pre-release -o vscode-javac-${{ env.EXT_VERSION }}-${GITHUB_RUN_NUMBER}.vsix
+          ls -lash *.vsix
+
+      - name: Publish to GH Release Tab
+        uses: "marvinpinto/action-automatic-releases@919008cf3f741b179569b7a6fb4d8860689ab7f0"
+        with:
+          repo_token: "${{secrets.GITHUB_TOKEN}}"
+          automatic_release_tag: "javac-prototype"
+          prerelease: true
+          title: "Prototype Build with Javac support"
+          files: |
+            vscode-java/*.vsix