Refine setting local element

Also fix DOMVariableBinding.isParameter() for caught Exception

Author: mickaelistria

org.eclipse.jdt.core.javac/src/org/eclipse/jdt/internal/core/search/DOMASTNodeUtils.java

@@ -49,6 +49,7 @@
 import org.eclipse.jdt.core.dom.Type;
 import org.eclipse.jdt.core.dom.TypeParameter;
 import org.eclipse.jdt.core.dom.VariableDeclaration;
+import org.eclipse.jdt.core.dom.VariableDeclarationExpression;
 import org.eclipse.jdt.core.dom.VariableDeclarationFragment;
 import org.eclipse.jdt.core.dom.VariableDeclarationStatement;
 
@@ -100,6 +101,11 @@ public static IJavaElement getLocalJavaElement(ASTNode node) {
 			if( vb != null )
 				return vb.getJavaElement();
 		}
+		if (node instanceof VariableDeclarationExpression variable && !variable.fragments().isEmpty()) {
+			IVariableBinding vb =  ((List<VariableDeclarationFragment>)variable.fragments()).iterator().next().resolveBinding();
+			if( vb != null )
+				return vb.getJavaElement();
+		}
 		if (node instanceof TypeParameter typeParam) {
 			return typeParam.resolveBinding().getJavaElement();
 		}

org.eclipse.jdt.core.javac/src/org/eclipse/jdt/internal/javac/dom/JavacVariableBinding.java

@@ -13,6 +13,8 @@
 import java.util.Arrays;
 import java.util.Objects;
 
+import javax.lang.model.element.ElementKind;
+
 import org.eclipse.core.runtime.ILog;
 import org.eclipse.jdt.core.IField;
 import org.eclipse.jdt.core.IJavaElement;
@@ -282,7 +284,9 @@ public boolean isEnumConstant() {
 
 	@Override
 	public boolean isParameter() {
-		return this.variableSymbol.owner instanceof MethodSymbol && (this.variableSymbol.flags() & Flags.PARAMETER) != 0;
+		return this.variableSymbol.owner instanceof MethodSymbol ownerMethod
+				&& (this.variableSymbol.flags() & Flags.PARAMETER) != 0
+				&& this.variableSymbol.getKind() != ElementKind.EXCEPTION_PARAMETER;
 	}
 
 	@Override