Add some more quick fixes from LocalCorrectionsBaseSubProcessor.

- UninitializedLocalVariable, UninitializedLocalVariableHintMissingDefault
  -> addUninitializedLocalVariableProposal
- UnusedTypeParameter -> addUnusedTypeParameterProposal
- DuplicateInheritedDefaultMethods, InheritedDefaultMethodConflictsWithOtherInherited
  -> addOverrideDefaultMethodProposal
- Fix quick fixes that require diagnostic data (IProblem argumments)

Signed-off-by: Roland Grunberg <[email protected]>

Author: rgrunber

org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/corrections/QuickFixProcessor.java

@@ -332,11 +332,10 @@ private void process(CodeActionParams params, IInvocationContext context, IProbl
 			// ModifierCorrectionSubProcessor.addNonFinalLocalProposal(context,
 			// problem, proposals);
 			// break;
-			// case IProblem.UninitializedLocalVariable:
-			// case IProblem.UninitializedLocalVariableHintMissingDefault:
-			// LocalCorrectionsSubProcessor.addUninitializedLocalVariableProposal(context,
-			// problem, proposals);
-			// break;
+			case IProblem.UninitializedLocalVariable:
+			case IProblem.UninitializedLocalVariableHintMissingDefault:
+				LocalCorrectionsSubProcessor.addUninitializedLocalVariableProposal(context, problem, proposals);
+				break;
 			case IProblem.UnhandledExceptionInDefaultConstructor:
 			case IProblem.UndefinedConstructorInDefaultConstructor:
 			case IProblem.NotVisibleConstructorInDefaultConstructor:
@@ -644,10 +643,9 @@ private void process(CodeActionParams params, IInvocationContext context, IProbl
 			// NullAnnotationsCorrectionProcessor.addRemoveRedundantAnnotationProposal(context,
 			// problem, proposals);
 			// break;
-			// case IProblem.UnusedTypeParameter:
-			// LocalCorrectionsSubProcessor.addUnusedTypeParameterProposal(context,
-			// problem, proposals);
-			// break;
+			case IProblem.UnusedTypeParameter:
+				LocalCorrectionsSubProcessor.addUnusedTypeParameterProposal(context, problem, proposals);
+				break;
 			// case IProblem.NullableFieldReference:
 			// NullAnnotationsCorrectionProcessor.addExtractCheckedLocalProposal(context,
 			// problem, proposals);
@@ -664,11 +662,10 @@ private void process(CodeActionParams params, IInvocationContext context, IProbl
 			case IProblem.IllegalQualifiedEnumConstantLabel:
 				LocalCorrectionsSubProcessor.addIllegalQualifiedEnumConstantLabelProposal(context, problem, proposals);
 				break;
-			// case IProblem.DuplicateInheritedDefaultMethods:
-			// case IProblem.InheritedDefaultMethodConflictsWithOtherInherited:
-			// LocalCorrectionsSubProcessor.addOverrideDefaultMethodProposal(context,
-			// problem, proposals);
-			// break;
+			case IProblem.DuplicateInheritedDefaultMethods:
+			case IProblem.InheritedDefaultMethodConflictsWithOtherInherited:
+				LocalCorrectionsSubProcessor.addOverrideDefaultMethodProposal(context, problem, proposals);
+				break;
 			// case IProblem.PotentialNullLocalVariableReference:
 			// IJavaProject prj2= context.getCompilationUnit().getJavaProject();
 			// if (prj2 != null &&

org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/corrections/proposals/LocalCorrectionsSubProcessor.java

@@ -77,6 +77,7 @@
 import org.eclipse.jdt.internal.corext.fix.UnusedCodeFixCore;
 import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
 import org.eclipse.jdt.internal.ui.fix.CodeStyleCleanUpCore;
+import org.eclipse.jdt.internal.ui.text.correction.IProposalRelevance;
 import org.eclipse.jdt.internal.ui.text.correction.LocalCorrectionsBaseSubProcessor;
 import org.eclipse.jdt.internal.ui.text.correction.ProblemLocation;
 import org.eclipse.jdt.internal.ui.text.correction.proposals.ChangeMethodSignatureProposalCore;
@@ -477,6 +478,24 @@ public static void addVariableReferenceProposal(IInvocationContext context, IPro
 		new LocalCorrectionsSubProcessor().getVariableReferenceProposal(context, problem, proposals);
 	}
 
+	public static void addUninitializedLocalVariableProposal(IInvocationContext context, IProblemLocation problem, Collection<ProposalKindWrapper> proposals) {
+		new LocalCorrectionsSubProcessor().getUninitializedLocalVariableProposal(context, problem, proposals);
+	}
+
+	public static void addOverrideDefaultMethodProposal(IInvocationContext context, IProblemLocation problem, Collection<ProposalKindWrapper> proposals) {
+		new LocalCorrectionsSubProcessor().getOverrideDefaultMethodProposal(context, problem, proposals);
+	}
+
+	public static void addUnusedTypeParameterProposal(IInvocationContext context, IProblemLocation problem, Collection<ProposalKindWrapper> proposals) {
+		UnusedCodeFixCore fix = UnusedCodeFixCore.createUnusedTypeParameterFix(context.getASTRoot(), problem);
+		if (fix != null) {
+			FixCorrectionProposalCore proposal = new FixCorrectionProposalCore(fix, fix.getCleanUp(), IProposalRelevance.UNUSED_MEMBER, context);
+			proposals.add(CodeActionHandler.wrap(proposal, CodeActionKind.QuickFix));
+		}
+
+		JavadocTagsSubProcessor.getUnusedAndUndocumentedParameterOrExceptionProposals(context, problem, proposals);
+	}
+
 	public static void getMissingEnumConstantCaseProposals(IInvocationContext context, IProblemLocation problem, Collection<ProposalKindWrapper> proposals) {
 		for (ProposalKindWrapper proposal : proposals) {
 			if (CorrectionMessages.LocalCorrectionsSubProcessor_add_missing_cases_description.equals(proposal.getProposal().getName())) {

org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/handlers/BaseDiagnosticsHandler.java

@@ -256,7 +256,11 @@ public static List<Diagnostic> toDiagnosticsArray(IOpenable openable, List<IProb
 			diag.setSeverity(convertSeverity(problem));
 			diag.setRange(convertRange(openable, problem));
 			Map<String, Object> data = new HashMap<>();
-			if (problem.getID() == IProblem.UndefinedName || problem.getID() == IProblem.UndefinedType || problem.getID() == IProblem.UninitializedBlankFinalField) {
+			if (problem.getID() == IProblem.UndefinedName
+					|| problem.getID() == IProblem.UndefinedType
+					|| problem.getID() == IProblem.UninitializedBlankFinalField
+					|| problem.getID() == IProblem.DuplicateInheritedDefaultMethods
+					|| problem.getID() == IProblem.InheritedDefaultMethodConflictsWithOtherInherited) {
 				data.put(DIAG_ARGUMENTS, problem.getArguments());
 			}
 			if (isDiagnosticTagSupported) {

org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/handlers/CodeActionHandler.java

@@ -358,7 +358,10 @@ public static IProblemLocation[] getProblemLocationCores(ICompilationUnit unit,
 						arguments.add(e.getAsString());
 					}
 				} else if (args instanceof String[] args1) {
+					// Needed for test cases (no LSP4J transmission)
 					arguments = Arrays.asList(args1);
+				} else if (args instanceof List args1) {
+					arguments = args1;
 				}
 				Object ecjProblemId = data.get(BaseDiagnosticsHandler.DIAG_ECJ_PROBLEM_ID);
 				if (ecjProblemId instanceof String id) {