From ebbc4282ff4a3bdeba62b808da2c42d85c86b2d6 Mon Sep 17 00:00:00 2001
From: David Thompson <davthomp@redhat.com>
Date: Mon, 6 Oct 2025 16:34:38 -0400
Subject: [PATCH] Update flags for jdt-javac

Update the flags to match
https://github.com/eclipse-jdtls/eclipse-jdt-core-incubator/blob/dom-with-javac/org.eclipse.jdt.core.javac/META-INF/p2.inf

This opens a bunch of jdk internals that the jdt-javac work uses,
and also sets the flags to enable the javac-based search.

Signed-off-by: David Thompson <davthomp@redhat.com>
---
 src/javaServerStarter.ts | 81 ++++++++++++++++++++++------------------
 1 file changed, 44 insertions(+), 37 deletions(-)

diff --git a/src/javaServerStarter.ts b/src/javaServerStarter.ts
index 78aa340d9..5bfaa24b0 100644
--- a/src/javaServerStarter.ts
+++ b/src/javaServerStarter.ts
@@ -123,43 +123,50 @@ function prepareParams(requirements: RequirementsData, workspacePath, context: E
 	if (javacEnabled) {
 		// Javac flags
 		params.push(
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.taglets.snippet=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.taglets=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.platform=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.resources=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED',
-		'--add-opens',
-		'jdk.zipfs/jdk.nio.zipfs=ALL-UNNAMED',
-		'--add-opens',
-		'java.compiler/javax.tools=ALL-UNNAMED',
-		'--add-opens',
-		'java.base/java.nio.channels=ALL-UNNAMED',
-		'--add-opens',
-		'java.base/sun.nio.ch=ALL-UNNAMED',
-		'-DICompilationUnitResolver=org.eclipse.jdt.core.dom.JavacCompilationUnitResolver',
-		'-DCompilationUnit.DOM_BASED_OPERATIONS=true',
-		'-DAbstractImageBuilder.compilerFactory=org.eclipse.jdt.internal.javac.JavacCompilerFactory'
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.taglets.snippet=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.taglets=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.platform=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.compiler/com.sun.tools.javac.resources=ALL-UNNAMED',
+			'--add-opens',
+			'java.base/sun.nio.ch=ALL-UNNAMED',
+			'--add-opens',
+			'jdk.zipfs/jdk.nio.zipfs=ALL-UNNAMED',
+			'--add-opens',
+			'java.compiler/javax.tools=ALL-UNNAMED',
+			'--add-opens',
+			'java.base/java.nio.channels=ALL-UNNAMED',
+			'-DICompilationUnitResolver=org.eclipse.jdt.core.dom.JavacCompilationUnitResolver',
+			'-DAbstractImageBuilder.compilerFactory=org.eclipse.jdt.internal.javac.JavacCompilerFactory',
+			'-DCompilationUnit.DOM_BASED_OPERATIONS=true',
+			'-DSourceIndexer.DOM_BASED_INDEXER=true',
+			'-DMatchLocator.DOM_BASED_MATCH=true',
+			'-DIJavaSearchDelegate=org.eclipse.jdt.internal.core.search.DOMJavaSearchDelegate',
 		);
 
 		if('dom' === getJavaConfiguration().get('completion.engine')){