org.eclipse.lsp4j.CodeActionKind Java Examples

/**
 * Proposes a getter for this field.
 *
 * @param context
 *            the proposal parameter
 * @param relevance
 *            relevance of this proposal
 * @return the proposal if available or null
 */
private static ChangeCorrectionProposal addGetterProposal(ProposalParameter context, int relevance) {
	IMethodBinding method = findGetter(context);
	if (method != null) {
		Expression mi = createMethodInvocation(context, method, null);
		context.astRewrite.replace(context.accessNode, mi, null);

		String label = Messages.format(CorrectionMessages.GetterSetterCorrectionSubProcessor_replacewithgetter_description, BasicElementLabels.getJavaCodeString(ASTNodes.asString(context.accessNode)));
		ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.compilationUnit, context.astRewrite, relevance);
		return proposal;
	} else {
		IJavaElement element = context.variableBinding.getJavaElement();
		if (element instanceof IField) {
			IField field = (IField) element;
			try {
				if (RefactoringAvailabilityTester.isSelfEncapsulateAvailable(field)) {
					return new SelfEncapsulateFieldProposal(relevance, field);
				}
			} catch (JavaModelException e) {
				JavaLanguageServerPlugin.log(e);
			}
		}
	}
	return null;
}
 

public static void getInvalidQualificationProposals(IInvocationContext context, IProblemLocationCore problem,
		Collection<ChangeCorrectionProposal> proposals) {
	ASTNode node= problem.getCoveringNode(context.getASTRoot());
	if (!(node instanceof Name)) {
		return;
	}
	Name name= (Name) node;
	IBinding binding= name.resolveBinding();
	if (!(binding instanceof ITypeBinding)) {
		return;
	}
	ITypeBinding typeBinding= (ITypeBinding)binding;

	AST ast= node.getAST();
	ASTRewrite rewrite= ASTRewrite.create(ast);
	rewrite.replace(name, ast.newName(typeBinding.getQualifiedName()), null);

	String label= CorrectionMessages.JavadocTagsSubProcessor_qualifylinktoinner_description;
	ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(),
			rewrite, IProposalRelevance.QUALIFY_INNER_TYPE_NAME);

	proposals.add(proposal);
}
 

public static void getRemoveJavadocTagProposals(IInvocationContext context, IProblemLocationCore problem,
		Collection<ChangeCorrectionProposal> proposals) {
	ASTNode node= problem.getCoveringNode(context.getASTRoot());
	while (node != null && !(node instanceof TagElement)) {
		node= node.getParent();
	}
	if (node == null) {
		return;
	}
	ASTRewrite rewrite= ASTRewrite.create(node.getAST());
	rewrite.remove(node, null);

	String label= CorrectionMessages.JavadocTagsSubProcessor_removetag_description;
	proposals.add(new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(), rewrite,
			IProposalRelevance.REMOVE_TAG));
}
 

public static void getAmbiguousTypeReferenceProposals(IInvocationContext context, IProblemLocationCore problem,
		Collection<ChangeCorrectionProposal> proposals) throws CoreException {
	final ICompilationUnit cu= context.getCompilationUnit();
	int offset= problem.getOffset();
	int len= problem.getLength();

	IJavaElement[] elements= cu.codeSelect(offset, len);
	for (int i= 0; i < elements.length; i++) {
		IJavaElement curr= elements[i];
		if (curr instanceof IType && !TypeFilter.isFiltered((IType) curr)) {
			String qualifiedTypeName= ((IType) curr).getFullyQualifiedName('.');

			CompilationUnit root= context.getASTRoot();

			String label= Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_importexplicit_description, BasicElementLabels.getJavaElementName(qualifiedTypeName));
			ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, cu, ASTRewrite.create(root.getAST()), IProposalRelevance.IMPORT_EXPLICIT);

			ImportRewrite imports= proposal.createImportRewrite(root);
			imports.addImport(qualifiedTypeName);

			proposals.add(proposal);
		}
	}
}
 

@Test
public void testRemovingNotPrefixWhenInvertVariable() throws Exception {
	IPackageFragment pack1 = testSourceFolder.createPackageFragment("test", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        boolean notLie = 3 != 5;\n");
	buf.append("    }\n");
	buf.append("}\n");

	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        boolean lie = 3 == 5;\n");
	buf.append("    }\n");
	buf.append("}\n");

	Expected expected = new Expected(INVERT_BOOLEAN_VARIABLE, buf.toString(), CodeActionKind.Refactor);
	Range replacedRange = CodeActionUtil.getRange(cu, "notLie", 0);
	assertCodeActions(cu, replacedRange, expected);
}
 

@Test
public void testCodeAction_sourceActionsOnly() throws Exception {
	//@formatter:off
	ICompilationUnit unit = getWorkingCopy(
			"src/java/Foo.java",
			"import java.sql.*; \n" +
			"public class Foo {\n"+
			"	void foo() {\n"+
			"	}\n"+
			"}\n");
	//@formatter:on
	CodeActionParams params = new CodeActionParams();
	params.setTextDocument(new TextDocumentIdentifier(JDTUtils.toURI(unit)));
	final Range range = CodeActionUtil.getRange(unit, "foo()");
	params.setRange(range);
	params.setContext(new CodeActionContext(Collections.emptyList(), Collections.singletonList(CodeActionKind.Source)));
	List<Either<Command, CodeAction>> sourceActions = getCodeActions(params);

	Assert.assertNotNull(sourceActions);
	Assert.assertFalse("No source actions were found", sourceActions.isEmpty());
	for (Either<Command, CodeAction> codeAction : sourceActions) {
		Assert.assertTrue("Unexpected kind:" + codeAction.getRight().getKind(), codeAction.getRight().getKind().startsWith(CodeActionKind.Source));
	}
}
 

public void organizeImportsInCompilationUnit(ICompilationUnit unit, WorkspaceEdit rootEdit) {
	try {
		InnovationContext context = new InnovationContext(unit, 0, unit.getBuffer().getLength() - 1);
		CUCorrectionProposal proposal = new CUCorrectionProposal("OrganizeImports", CodeActionKind.SourceOrganizeImports, unit, null, IProposalRelevance.ORGANIZE_IMPORTS) {
			@Override
			protected void addEdits(IDocument document, TextEdit editRoot) throws CoreException {
				CompilationUnit astRoot = context.getASTRoot();
				OrganizeImportsOperation op = new OrganizeImportsOperation(unit, astRoot, true, false, true, null);
				TextEdit edit = op.createTextEdit(null);
				TextEdit staticEdit = OrganizeImportsHandler.wrapStaticImports(edit, astRoot, unit);
				if (staticEdit.getChildrenSize() > 0) {
					editRoot.addChild(staticEdit);
				}
			}
		};

		addWorkspaceEdit(unit, proposal, rootEdit);
	} catch (CoreException e) {
		JavaLanguageServerPlugin.logException("Problem organize imports ", e);
	}
}
 

@Test
public void testCodeAction_refactorActionsOnly() throws Exception {
	ICompilationUnit unit = getWorkingCopy(
			"src/java/Foo.java",
			"public class Foo {\n"+
			"	void foo() {\n"+
			"		String bar = \"astring\";"+
			"	}\n"+
			"}\n");
	CodeActionParams params = new CodeActionParams();
	params.setTextDocument(new TextDocumentIdentifier(JDTUtils.toURI(unit)));
	final Range range = CodeActionUtil.getRange(unit, "bar");
	params.setRange(range);
	CodeActionContext context = new CodeActionContext(
		Arrays.asList(getDiagnostic(Integer.toString(IProblem.LocalVariableIsNeverUsed), range)),
		Collections.singletonList(CodeActionKind.Refactor)
	);
	params.setContext(context);
	List<Either<Command, CodeAction>> refactorActions = getCodeActions(params);

	Assert.assertNotNull(refactorActions);
	Assert.assertFalse("No refactor actions were found", refactorActions.isEmpty());
	for (Either<Command, CodeAction> codeAction : refactorActions) {
		Assert.assertTrue("Unexpected kind:" + codeAction.getRight().getKind(), codeAction.getRight().getKind().startsWith(CodeActionKind.Refactor));
	}
}
 

private void createCodeActionsForUnusedImport(Path path, Diagnostic diagnostic, WorkspaceFolderData folderData, List<Either<Command, CodeAction>> codeActions)
{
    String fileText = fileTracker.getText(path);
    if(fileText == null)
    {
        return;
    }

    Range range = diagnostic.getRange();
    WorkspaceEdit edit = CodeActionsUtils.createWorkspaceEditForRemoveUnusedImport(fileText, path.toUri().toString(), diagnostic.getRange());
    if (edit == null)
    {
        return;
    }

    int startOffset = LanguageServerCompilerUtils.getOffsetFromPosition(new StringReader(fileText), range.getStart());
    int endOffset = LanguageServerCompilerUtils.getOffsetFromPosition(new StringReader(fileText), range.getEnd());

    String importText = fileText.substring(startOffset, endOffset);
    CodeAction codeAction = new CodeAction();
    codeAction.setTitle("Remove " + importText);
    codeAction.setEdit(edit);
    codeAction.setKind(CodeActionKind.QuickFix);
    codeAction.setDiagnostics(Collections.singletonList(diagnostic));
    codeActions.add(Either.forRight(codeAction));
}
 

/** Adds a quick-fix code action with the given title, edit and command */
public void acceptQuickfixCodeAction(QuickfixContext context, String title, WorkspaceEdit edit, Command command) {
	if (edit == null && command == null) {
		return;
	}
	CodeAction codeAction = new CodeAction();
	codeAction.setTitle(title);
	codeAction.setEdit(edit);
	codeAction.setCommand(command);
	codeAction.setKind(CodeActionKind.QuickFix);
	if (context.options != null && context.options.getCodeActionParams() != null) {
		CodeActionContext cac = context.options.getCodeActionParams().getContext();
		if (cac != null && cac.getDiagnostics() != null) {
			codeAction.setDiagnostics(cac.getDiagnostics());
		}
	}
	codeActions.add(Either.forRight(codeAction));
}
 

public static void addCasesOmittedProposals(IInvocationContext context, IProblemLocationCore problem, Collection<ChangeCorrectionProposal> proposals) {
	ASTNode selectedNode = problem.getCoveringNode(context.getASTRoot());
	if (selectedNode instanceof Expression && selectedNode.getLocationInParent() == SwitchStatement.EXPRESSION_PROPERTY) {
		AST ast = selectedNode.getAST();
		SwitchStatement parent = (SwitchStatement) selectedNode.getParent();

		for (Statement statement : (List<Statement>) parent.statements()) {
			if (statement instanceof SwitchCase && ((SwitchCase) statement).isDefault()) {

				// insert //$CASES-OMITTED$:
				ASTRewrite rewrite = ASTRewrite.create(ast);
				rewrite.setTargetSourceRangeComputer(new NoCommentSourceRangeComputer());
				ListRewrite listRewrite = rewrite.getListRewrite(parent, SwitchStatement.STATEMENTS_PROPERTY);
				ASTNode casesOmittedComment = rewrite.createStringPlaceholder("//$CASES-OMITTED$", ASTNode.EMPTY_STATEMENT); //$NON-NLS-1$
				listRewrite.insertBefore(casesOmittedComment, statement, null);

				String label = CorrectionMessages.LocalCorrectionsSubProcessor_insert_cases_omitted;
				ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(), rewrite, IProposalRelevance.INSERT_CASES_OMITTED);
				proposals.add(proposal);
				break;
			}
		}
	}
}
 

@Test
public void testCodeAction_removeUnterminatedString() throws Exception{
	ICompilationUnit unit = getWorkingCopy(
			"src/java/Foo.java",
			"public class Foo {\n"+
					"	void foo() {\n"+
					"String s = \"some str\n" +
					"	}\n"+
			"}\n");

	CodeActionParams params = new CodeActionParams();
	params.setTextDocument(new TextDocumentIdentifier(JDTUtils.toURI(unit)));
	final Range range = CodeActionUtil.getRange(unit, "some str");
	params.setRange(range);
	params.setContext(new CodeActionContext(Arrays.asList(getDiagnostic(Integer.toString(IProblem.UnterminatedString), range))));
	List<Either<Command, CodeAction>> codeActions = getCodeActions(params);
	Assert.assertNotNull(codeActions);
	Assert.assertFalse(codeActions.isEmpty());
	Assert.assertEquals(codeActions.get(0).getRight().getKind(), CodeActionKind.QuickFix);
	Command c = codeActions.get(0).getRight().getCommand();
	Assert.assertEquals(CodeActionHandler.COMMAND_ID_APPLY_EDIT, c.getCommand());
}
 

private void findSourceActions(Path path, List<Either<Command, CodeAction>> codeActions)
{
    Command organizeCommand = new Command();
    organizeCommand.setTitle("Organize Imports");
    organizeCommand.setCommand(ICommandConstants.ORGANIZE_IMPORTS_IN_URI);
    JsonObject uri = new JsonObject();
    uri.addProperty("external", path.toUri().toString());
    organizeCommand.setArguments(Lists.newArrayList(
        uri
    ));
    CodeAction organizeImports = new CodeAction();
    organizeImports.setKind(CodeActionKind.SourceOrganizeImports);
    organizeImports.setTitle(organizeCommand.getTitle());
    organizeImports.setCommand(organizeCommand);
    codeActions.add(Either.forRight(organizeImports));
}
 

private static void createCodeActionsForGenerateGetterAndSetter(IVariableNode variableNode, String uri, String fileText, Range codeActionsRange, List<Either<Command, CodeAction>> codeActions)
{
    WorkspaceEdit getSetEdit = createWorkspaceEditForGenerateGetterAndSetter(
        variableNode, uri, fileText, true, true);
    CodeAction getAndSetCodeAction = new CodeAction();
    getAndSetCodeAction.setTitle("Generate 'get' and 'set' accessors");
    getAndSetCodeAction.setEdit(getSetEdit);
    getAndSetCodeAction.setKind(CodeActionKind.RefactorRewrite);
    codeActions.add(Either.forRight(getAndSetCodeAction));
    
    WorkspaceEdit getterEdit = createWorkspaceEditForGenerateGetterAndSetter(
        variableNode, uri, fileText, true, false);
    CodeAction getterCodeAction = new CodeAction();
    getterCodeAction.setTitle("Generate 'get' accessor (make read-only)");
    getterCodeAction.setEdit(getterEdit);
    getterCodeAction.setKind(CodeActionKind.RefactorRewrite);
    codeActions.add(Either.forRight(getterCodeAction));

    WorkspaceEdit setterEdit = createWorkspaceEditForGenerateGetterAndSetter(
        variableNode, uri, fileText, false, true);
    CodeAction setterCodeAction = new CodeAction();
    setterCodeAction.setTitle("Generate 'set' accessor (make write-only)");
    setterCodeAction.setEdit(setterEdit);
    setterCodeAction.setKind(CodeActionKind.RefactorRewrite);
    codeActions.add(Either.forRight(setterCodeAction));
}
 

@Test
void testReturnCodeActionForQuickfixEvenWithInvalidRangeDiagnostic() throws FileNotFoundException, InterruptedException, ExecutionException {
	TextDocumentIdentifier textDocumentIdentifier = initAnLaunchDiagnostic();
	
	Diagnostic diagnostic = lastPublishedDiagnostics.getDiagnostics().get(0);

	List<Diagnostic> diagnostics = new ArrayList<Diagnostic>();
	Diagnostic diagnosticWithInvalidRange = new Diagnostic(new Range(new Position(9,100), new Position(9,101)), "a different diagnostic coming with an invalid range.");
	diagnosticWithInvalidRange.setCode(DiagnosticService.ERROR_CODE_UNKNOWN_PROPERTIES);
	diagnostics.add(diagnosticWithInvalidRange);
	diagnostics.addAll(lastPublishedDiagnostics.getDiagnostics());
	
	CodeActionContext context = new CodeActionContext(diagnostics, Collections.singletonList(CodeActionKind.QuickFix));
	CompletableFuture<List<Either<Command,CodeAction>>> codeActions = camelLanguageServer.getTextDocumentService().codeAction(new CodeActionParams(textDocumentIdentifier, diagnostic.getRange(), context));
	
	checkRetrievedCodeAction(textDocumentIdentifier, diagnostic, codeActions);
}
 

@Test
public void testUnimplementedMethods() throws Exception {
	IJavaProject javaProject = newEmptyProject();
	IPackageFragmentRoot sourceFolder = javaProject.getPackageFragmentRoot(javaProject.getProject().getFolder("src"));
	IPackageFragment pack1 = sourceFolder.createPackageFragment("test1", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test1;\n");
	buf.append("public interface E {\n");
	buf.append("    void foo();\n");
	buf.append("}\n");
	pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	buf = new StringBuilder();
	buf.append("package test1;\n");
	buf.append("public class F implements E {\n");
	buf.append("}\n");
	ICompilationUnit cu = pack1.createCompilationUnit("F.java", buf.toString(), false, null);
	openDocument(cu, cu.getSource(), 1);

	List<Either<Command, CodeAction>> codeActions = getCodeActions(cu);
	assertEquals(codeActions.size(), 1);
	assertEquals(codeActions.get(0).getRight().getKind(), CodeActionKind.QuickFix);
}
 

@Test
public void testRemoveDeadCodeAfterIf() throws Exception {
	IJavaProject javaProject = newEmptyProject();
	IPackageFragmentRoot sourceFolder = javaProject.getPackageFragmentRoot(javaProject.getProject().getFolder("src"));
	IPackageFragment pack1 = sourceFolder.createPackageFragment("test1", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test1;\n");
	buf.append("public class E {\n");
	buf.append("    public boolean foo(boolean b1) {\n");
	buf.append("        if (false) {\n");
	buf.append("            return true;\n");
	buf.append("        }\n");
	buf.append("        return false;\n");
	buf.append("    }\n");
	buf.append("}\n");
	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	List<Either<Command, CodeAction>> codeActions = getCodeActions(cu);
	assertEquals(codeActions.size(), 1);
	assertEquals(codeActions.get(0).getRight().getKind(), CodeActionKind.QuickFix);
}
 

protected List<Either<Command, CodeAction>> getCodeActions(ICompilationUnit cu) throws JavaModelException {

		CompilationUnit astRoot = CoreASTProvider.getInstance().getAST(cu, CoreASTProvider.WAIT_YES, null);
		IProblem[] problems = astRoot.getProblems();

		Range range = getRange(cu, problems);

		CodeActionParams parms = new CodeActionParams();

		TextDocumentIdentifier textDocument = new TextDocumentIdentifier();
		textDocument.setUri(JDTUtils.toURI(cu));
		parms.setTextDocument(textDocument);
		parms.setRange(range);
		CodeActionContext context = new CodeActionContext();
		context.setDiagnostics(DiagnosticsHandler.toDiagnosticsArray(cu, Arrays.asList(problems), true));
		context.setOnly(Arrays.asList(CodeActionKind.QuickFix));
		parms.setContext(context);

		return new CodeActionHandler(this.preferenceManager).getCodeActionCommands(parms, new NullProgressMonitor());
	}
 

/**
 * Makes a CodeAction to create a file and add content to the file.
 * 
 * @param title      The displayed name of the CodeAction
 * @param docURI     The file to create
 * @param content    The text to put into the newly created document.
 * @param diagnostic The diagnostic that this CodeAction will fix
 */
public static CodeAction createFile(String title, String docURI, String content, Diagnostic diagnostic) {

	List<Either<TextDocumentEdit, ResourceOperation>> actionsToTake = new ArrayList<>(2);

	// 1. create an empty file
	actionsToTake.add(Either.forRight(new CreateFile(docURI, new CreateFileOptions(false, true))));

	// 2. update the created file with the given content
	VersionedTextDocumentIdentifier identifier = new VersionedTextDocumentIdentifier(docURI, 0);
	TextEdit te = new TextEdit(new Range(new Position(0, 0), new Position(0, 0)), content);
	actionsToTake.add(Either.forLeft(new TextDocumentEdit(identifier, Collections.singletonList(te))));

	WorkspaceEdit createAndAddContentEdit = new WorkspaceEdit(actionsToTake);

	CodeAction codeAction = new CodeAction(title);
	codeAction.setEdit(createAndAddContentEdit);
	codeAction.setDiagnostics(Collections.singletonList(diagnostic));
	codeAction.setKind(CodeActionKind.QuickFix);

	return codeAction;
}
 

@Before
public void setup() throws Exception {
	fJProject1 = newEmptyProject();
	Hashtable<String, String> options = TestOptions.getDefaultOptions();

	fJProject1.setOptions(options);
	fSourceFolder = fJProject1.getPackageFragmentRoot(fJProject1.getProject().getFolder("src"));
	setOnly(CodeActionKind.Refactor);
	this.setIgnoredCommands("Extract to method");
}
 

@Test
public void testInvertAndOperator() throws Exception {
	IPackageFragment pack1 = testSourceFolder.createPackageFragment("test", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        if (true & true)\n");
	buf.append("            return;\n");
	buf.append("    }\n");
	buf.append("}\n");

	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        if (false | false)\n");
	buf.append("            return;\n");
	buf.append("    }\n");
	buf.append("}\n");

	Expected expected = new Expected("Invert conditions", buf.toString(), CodeActionKind.Refactor);
	Range replacedRange = CodeActionUtil.getRange(cu, "true & true", "true & true".length());
	assertCodeActions(cu, replacedRange, expected);

	Range nonSelectionRange = CodeActionUtil.getRange(cu, "true & true", 0);
	assertCodeActions(cu, nonSelectionRange, expected);
}
 

@Test
public void test_filterTypes() throws Exception {
	//@formatter:off
	ICompilationUnit unit = getWorkingCopy(
			"src/org/sample/Foo.java",
			"package org.sample;\n"+
			"\n"+
			"public class Foo {\n"+
			"	List foo;\n"+
			"}\n");
	//@formatter:on
	CodeActionParams params = new CodeActionParams();
	params.setTextDocument(new TextDocumentIdentifier(JDTUtils.toURI(unit)));
	final Range range = CodeActionUtil.getRange(unit, "List");
	params.setRange(range);
	params.setContext(new CodeActionContext(Collections.emptyList()));
	List<Either<Command, CodeAction>> codeActions = getCodeActions(params);
	Assert.assertNotNull(codeActions);
	Assert.assertTrue("No organize imports action", containsKind(codeActions, CodeActionKind.SourceOrganizeImports));
	try {
		List<String> filteredTypes = new ArrayList<>();
		filteredTypes.add("java.util.*");
		PreferenceManager.getPrefs(null).setFilteredTypes(filteredTypes);
		codeActions = getCodeActions(params);
		assertNotNull(codeActions);
		Assert.assertFalse("No need for organize imports action", containsKind(codeActions, CodeActionKind.SourceOrganizeImports));
	} finally {
		PreferenceManager.getPrefs(null).setFilteredTypes(Collections.emptyList());
	}
}
 

@Test
public void testInvertLessOperator() throws Exception {
	IPackageFragment pack1 = testSourceFolder.createPackageFragment("test", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        if (3 < 5)\n");
	buf.append("            return;\n");
	buf.append("    }\n");
	buf.append("}\n");

	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        if (3 >= 5)\n");
	buf.append("            return;\n");
	buf.append("    }\n");
	buf.append("}\n");

	Expected expected = new Expected("Invert conditions", buf.toString(), CodeActionKind.Refactor);
	Range replacedRange = CodeActionUtil.getRange(cu, "3 < 5", "3 < 5".length());
	assertCodeActions(cu, replacedRange, expected);

	Range nonSelectionRange = CodeActionUtil.getRange(cu, "3 < 5", 0);
	assertCodeActions(cu, nonSelectionRange, expected);
}
 

@Test
public void testInvertXorOperator() throws Exception {
	IPackageFragment pack1 = testSourceFolder.createPackageFragment("test", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        if (true ^ true)\n");
	buf.append("            return;\n");
	buf.append("    }\n");
	buf.append("}\n");

	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public void foo() {\n");
	buf.append("        if (!(true ^ true))\n");
	buf.append("            return;\n");
	buf.append("    }\n");
	buf.append("}\n");

	Expected expected = new Expected("Invert conditions", buf.toString(), CodeActionKind.Refactor);
	Range replacedRange = CodeActionUtil.getRange(cu, "true ^ true", "true ^ true".length());
	assertCodeActions(cu, replacedRange, expected);

	Range nonSelectionRange = CodeActionUtil.getRange(cu, "true ^ true", 0);
	assertCodeActions(cu, nonSelectionRange, expected);
}
 

@Test
public void testCodeAction_organizeImportsSourceActionOnly() throws Exception {
	ICompilationUnit unit = getWorkingCopy(
			"src/java/Foo.java",
			"import java.util.List;\n"+
			"public class Foo {\n"+
			"	void foo() {\n"+
			"		String bar = \"astring\";"+
			"	}\n"+
			"}\n");
	CodeActionParams params = new CodeActionParams();
	params.setTextDocument(new TextDocumentIdentifier(JDTUtils.toURI(unit)));
	final Range range = CodeActionUtil.getRange(unit, "bar");
	params.setRange(range);
	CodeActionContext context = new CodeActionContext(
		Arrays.asList(getDiagnostic(Integer.toString(IProblem.LocalVariableIsNeverUsed), range)),
		Collections.singletonList(CodeActionKind.SourceOrganizeImports)
	);
	params.setContext(context);
	List<Either<Command, CodeAction>> codeActions = getCodeActions(params);

	Assert.assertNotNull(codeActions);
	Assert.assertFalse("No organize imports actions were found", codeActions.isEmpty());
	for (Either<Command, CodeAction> codeAction : codeActions) {
		Assert.assertTrue("Unexpected kind:" + codeAction.getRight().getKind(), codeAction.getRight().getKind().startsWith(CodeActionKind.SourceOrganizeImports));
	}
}
 

/**
 * Proposes a setter for this field.
 *
 * @param context
 *            the proposal parameter
 * @param relevance
 *            relevance of this proposal
 * @return the proposal if available or null
 */
private static ChangeCorrectionProposal addSetterProposal(ProposalParameter context, int relevance) {
	boolean isBoolean = isBoolean(context);
	String setterName = GetterSetterUtil.getSetterName(context.variableBinding, context.compilationUnit.getJavaProject(), null, isBoolean);
	ITypeBinding declaringType = context.variableBinding.getDeclaringClass();
	if (declaringType == null) {
		return null;
	}

	IMethodBinding method = Bindings.findMethodInHierarchy(declaringType, setterName, new ITypeBinding[] { context.variableBinding.getType() });
	if (method != null && Bindings.isVoidType(method.getReturnType()) && (Modifier.isStatic(method.getModifiers()) == Modifier.isStatic(context.variableBinding.getModifiers()))) {
		Expression assignedValue = getAssignedValue(context);
		if (assignedValue == null) {
			return null; //we don't know how to handle those cases.
		}
		Expression mi = createMethodInvocation(context, method, assignedValue);
		context.astRewrite.replace(context.accessNode.getParent(), mi, null);

		String label = Messages.format(CorrectionMessages.GetterSetterCorrectionSubProcessor_replacewithsetter_description, BasicElementLabels.getJavaCodeString(ASTNodes.asString(context.accessNode)));
		ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.compilationUnit, context.astRewrite, relevance);
		return proposal;
	} else {
		IJavaElement element = context.variableBinding.getJavaElement();
		if (element instanceof IField) {
			IField field = (IField) element;
			try {
				if (RefactoringAvailabilityTester.isSelfEncapsulateAvailable(field)) {
					return new SelfEncapsulateFieldProposal(relevance, field);
				}
			} catch (JavaModelException e) {
				JavaLanguageServerPlugin.log(e);
			}
		}
	}
	return null;
}
 

@Test
public void testMissingEnumConstant() throws Exception {
	IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null);
	StringBuilder buf = new StringBuilder();
	buf.append("package test1;\n");
	buf.append("public class E {\n");
	buf.append("   public enum Numbers { One, Two};\n");
	buf.append("    public void testing() {\n");
	buf.append("        Numbers n = Numbers.One;\n");
	buf.append("        switch (n) {\n");
	buf.append("        case Two:\n");
	buf.append("            return;\n");
	buf.append("        }\n");
	buf.append("    }\n");
	buf.append("}\n");
	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);
	Range range = new Range(new Position(5, 16), new Position(5, 17));
	setIgnoredCommands(ActionMessages.GenerateConstructorsAction_ellipsisLabel, ActionMessages.GenerateConstructorsAction_label);
	List<Either<Command, CodeAction>> codeActions = evaluateCodeActions(cu, range);
	assertEquals(2, codeActions.size());
	Either<Command, CodeAction> codeAction = codeActions.get(0);
	CodeAction action = codeAction.getRight();
	assertEquals(CodeActionKind.QuickFix, action.getKind());
	assertEquals("Add 'default' case", action.getTitle());
	TextEdit edit = getTextEdit(codeAction);
	assertEquals("\n        default:\n            break;", edit.getNewText());
	codeAction = codeActions.get(1);
	action = codeAction.getRight();
	assertEquals(CodeActionKind.QuickFix, action.getKind());
	assertEquals("Add missing case statements", action.getTitle());
	edit = getTextEdit(codeAction);
	assertEquals("\n        case One:\n            break;\n        default:\n            break;", edit.getNewText());
}
 

@Test
public void testComplexInvertVariable() throws Exception {
	IPackageFragment pack1 = testSourceFolder.createPackageFragment("test", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public boolean foo() {\n");
	buf.append("        boolean a = 3 != 5;\n");
	buf.append("        boolean b = !a;\n");
	buf.append("        boolean c = bar(a);\n");
	buf.append("        return a;\n");
	buf.append("    }\n");
	buf.append("    public boolean bar(boolean value) {\n");
	buf.append("        return !value;\n");
	buf.append("    }\n");
	buf.append("}\n");

	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	buf = new StringBuilder();
	buf.append("package test;\n");
	buf.append("public class E {\n");
	buf.append("    public boolean foo() {\n");
	buf.append("        boolean notA = 3 == 5;\n");
	buf.append("        boolean b = notA;\n");
	buf.append("        boolean c = bar(!notA);\n");
	buf.append("        return !notA;\n");
	buf.append("    }\n");
	buf.append("    public boolean bar(boolean value) {\n");
	buf.append("        return !value;\n");
	buf.append("    }\n");
	buf.append("}\n");

	Expected expected = new Expected(INVERT_BOOLEAN_VARIABLE, buf.toString(), CodeActionKind.Refactor);
	Range replacedRange = CodeActionUtil.getRange(cu, "a = 3 != 5", 0);
	assertCodeActions(cu, replacedRange, expected);
}
 

public ImplementInterfaceProposal(ICompilationUnit targetCU, ITypeBinding binding, CompilationUnit astRoot, ITypeBinding newInterface, int relevance) {
	super("", CodeActionKind.QuickFix, targetCU, null, relevance); //$NON-NLS-1$

	Assert.isTrue(binding != null && Bindings.isDeclarationBinding(binding));

	fBinding= binding;
	fAstRoot= astRoot;
	fNewInterface= newInterface;

	String[] args= { BasicElementLabels.getJavaElementName(binding.getName()), BasicElementLabels.getJavaElementName(Bindings.getRawName(newInterface)) };
	setDisplayName(Messages.format(CorrectionMessages.ImplementInterfaceProposal_name, args));
}
 

public NewVariableCorrectionProposal(String label, ICompilationUnit cu, int variableKind, SimpleName node,
		ITypeBinding senderBinding, int relevance) {
	super(label, CodeActionKind.QuickFix, cu, null, relevance);
	if (senderBinding == null) {
		Assert.isTrue(variableKind == PARAM || variableKind == LOCAL);
	} else {
		Assert.isTrue(Bindings.isDeclarationBinding(senderBinding));
	}

	fVariableKind= variableKind;
	fOriginalNode= node;
	fSenderBinding= senderBinding;
}