Add jar attribute support. (#152)

Author: yaohaizh

jdtls.ext/com.microsoft.jdtls.ext.core/src/com/microsoft/jdtls/ext/core/PackageCommand.java

@@ -36,6 +36,7 @@
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.jdt.core.IClassFile;
+import org.eclipse.jdt.core.IClasspathAttribute;
 import org.eclipse.jdt.core.IClasspathEntry;
 import org.eclipse.jdt.core.IJarEntryResource;
 import org.eclipse.jdt.core.IJavaElement;
@@ -279,12 +280,21 @@ private static List<PackageNode> getPackageFragmentRoots(PackageParams query, IP
                         if (fragmentRoot.getKind() == IPackageFragmentRoot.K_SOURCE) {
                             displayName = ExtUtils.removeProjectSegment(javaProject.getElementName(), fragmentRoot.getPath()).toPortableString();
                         }
-                        PackageNode node = new PackageRootNode(displayName, fragmentRoot.getPath().toPortableString(), NodeKind.PACKAGEROOT,
+                        PackageRootNode node = new PackageRootNode(displayName, fragmentRoot.getPath().toPortableString(), NodeKind.PACKAGEROOT,
                                 fragmentRoot.getKind());
                         children.add(node);
                         if (fragmentRoot instanceof JrtPackageFragmentRoot) {
                             node.setModuleName(fragmentRoot.getModuleDescription().getElementName());
                         }
+
+                        IClasspathEntry resolvedClasspathEntry = fragmentRoot.getResolvedClasspathEntry();
+                        if (resolvedClasspathEntry != null) {
+                            Map<String, String> attributes = new HashMap<>();
+                            for (IClasspathAttribute attribute : resolvedClasspathEntry.getExtraAttributes()) {
+                                attributes.put(attribute.getName(), attribute.getValue());
+                            }
+                            node.setAttributes(attributes);
+                        }
                     }
                     return children;
                 } else if (query.getPath().equals(PackageNode.REFERENCED_LIBRARIES_PATH)) {

jdtls.ext/com.microsoft.jdtls.ext.core/src/com/microsoft/jdtls/ext/core/model/PackageRootNode.java

@@ -11,10 +11,14 @@
 
 package com.microsoft.jdtls.ext.core.model;
 
+import java.util.Map;
+
 public class PackageRootNode extends PackageNode {
 
     private int entryKind;
 
+    private Map<String, String> attributes;
+
     public PackageRootNode(String name, String path, NodeKind kind, int entryKind) {
         super(name, path, kind);
         this.entryKind = entryKind;
@@ -23,4 +27,12 @@ public PackageRootNode(String name, String path, NodeKind kind, int entryKind) {
     public int getEntryType() {
         return this.entryKind;
     }
+
+    public void setAttributes(Map<String, String> attributes) {
+        this.attributes = attributes;
+    }
+
+    public Map<String, String> getAttributes() {
+        return this.attributes;
+    }
 }

src/java/packageRootNodeData.ts

@@ -18,4 +18,6 @@ export enum PackageRootKind {
 
 export interface IPackageRootNodeData extends INodeData {
     entryKind: PackageRootKind;
+
+    attributes: Map<string, string>;
 }