Java Code Examples for lombok.javac.JavacNode#addWarning()

public static void processAnnotation(LoggingFramework framework, AnnotationValues<?> annotation, JavacNode annotationNode, String loggerTopic) {
	deleteAnnotationIfNeccessary(annotationNode, framework.getAnnotationClass());

	JavacNode typeNode = annotationNode.up();
	switch (typeNode.getKind()) {
	case TYPE:
		String logFieldName = annotationNode.getAst().readConfiguration(ConfigurationKeys.LOG_ANY_FIELD_NAME);
		if (logFieldName == null) logFieldName = "log";
		
		boolean useStatic = !Boolean.FALSE.equals(annotationNode.getAst().readConfiguration(ConfigurationKeys.LOG_ANY_FIELD_IS_STATIC));
		
		if ((((JCClassDecl)typeNode.get()).mods.flags & Flags.INTERFACE) != 0) {
			annotationNode.addError("@Log is legal only on classes and enums.");
			return;
		}
		if (fieldExists(logFieldName, typeNode) != MemberExistsResult.NOT_EXISTS) {
			annotationNode.addWarning("Field '" + logFieldName + "' already exists.");
			return;
		}

		JCFieldAccess loggingType = selfType(typeNode);
		createField(framework, typeNode, loggingType, annotationNode.get(), logFieldName, useStatic, loggerTopic);
		break;
	default:
		annotationNode.addError("@Log is legal only on types.");
		break;
	}
}
 

public void generateConstructor(JavacNode typeNode, AccessLevel level, List<JCAnnotation> onConstructor, List<JavacNode> fields, String staticName, SkipIfConstructorExists skipIfConstructorExists, Boolean suppressConstructorProperties, JavacNode source) {
	boolean staticConstrRequired = staticName != null && !staticName.equals("");
	
	if (skipIfConstructorExists != SkipIfConstructorExists.NO && constructorExists(typeNode) != MemberExistsResult.NOT_EXISTS) return;
	if (skipIfConstructorExists != SkipIfConstructorExists.NO) {
		for (JavacNode child : typeNode.down()) {
			if (child.getKind() == Kind.ANNOTATION) {
				boolean skipGeneration = annotationTypeMatches(NoArgsConstructor.class, child) ||
						annotationTypeMatches(AllArgsConstructor.class, child) ||
						annotationTypeMatches(RequiredArgsConstructor.class, child);
				
				if (!skipGeneration && skipIfConstructorExists == SkipIfConstructorExists.YES) {
					skipGeneration = annotationTypeMatches(Builder.class, child);
				}
				
				if (skipGeneration) {
					if (staticConstrRequired) {
						// @Data has asked us to generate a constructor, but we're going to skip this instruction, as an explicit 'make a constructor' annotation
						// will take care of it. However, @Data also wants a specific static name; this will be ignored; the appropriate way to do this is to use
						// the 'staticName' parameter of the @XArgsConstructor you've stuck on your type.
						// We should warn that we're ignoring @Data's 'staticConstructor' param.
						source.addWarning("Ignoring static constructor name: explicit @XxxArgsConstructor annotation present; its `staticName` parameter will be used.");
					}
					return;
				}
			}
		}
	}
	
	JCMethodDecl constr = createConstructor(staticConstrRequired ? AccessLevel.PRIVATE : level, onConstructor, typeNode, fields, suppressConstructorProperties, source);
	injectMethod(typeNode, constr);
	if (staticConstrRequired) {
		JCMethodDecl staticConstr = createStaticConstructor(staticName, level, typeNode, fields, source.get());
		injectMethod(typeNode, staticConstr);
	}
}
 

@Override public void handle(AnnotationValues<Getter> annotation, JCAnnotation ast, JavacNode annotationNode) {
	handleFlagUsage(annotationNode, ConfigurationKeys.GETTER_FLAG_USAGE, "@Getter");
	
	Collection<JavacNode> fields = annotationNode.upFromAnnotationToFields();
	deleteAnnotationIfNeccessary(annotationNode, Getter.class);
	deleteImportFromCompilationUnit(annotationNode, "lombok.AccessLevel");
	JavacNode node = annotationNode.up();
	Getter annotationInstance = annotation.getInstance();
	AccessLevel level = annotationInstance.value();
	boolean lazy = annotationInstance.lazy();
	if (lazy) handleFlagUsage(annotationNode, ConfigurationKeys.GETTER_LAZY_FLAG_USAGE, "@Getter(lazy=true)");
	
	if (level == AccessLevel.NONE) {
		if (lazy) annotationNode.addWarning("'lazy' does not work with AccessLevel.NONE.");
		return;
	}
	
	if (node == null) return;
	
	List<JCAnnotation> onMethod = unboxAndRemoveAnnotationParameter(ast, "onMethod", "@Getter(onMethod=", annotationNode);
	
	switch (node.getKind()) {
	case FIELD:
		createGetterForFields(level, fields, annotationNode, true, lazy, onMethod);
		break;
	case TYPE:
		if (!onMethod.isEmpty()) {
			annotationNode.addError("'onMethod' is not supported for @Getter on a type.");
		}
		if (lazy) annotationNode.addError("'lazy' is not supported for @Getter on a type.");
		generateGetterForType(node, annotationNode, level, false);
		break;
	}
}
 

public void generateEmptyBlockWarning(JavacNode methodNode, JavacNode annotation, boolean hasConstructorCall) {
	if (hasConstructorCall) {
		annotation.addWarning("Calls to sibling / super constructors are always excluded from @SneakyThrows; @SneakyThrows has been ignored because there is no other code in this constructor.");
	} else {
		annotation.addWarning("This method or constructor is empty; @SneakyThrows has been ignored.");
	}
}
 

public void doAssignmentCheck0(JavacNode node, JCTree statement, Name name) {
	if (statement instanceof JCAssign) doAssignmentCheck0(node, ((JCAssign)statement).rhs, name);
	if (statement instanceof JCExpressionStatement) doAssignmentCheck0(node,
			((JCExpressionStatement)statement).expr, name);
	if (statement instanceof JCVariableDecl) doAssignmentCheck0(node, ((JCVariableDecl)statement).init, name);
	if (statement instanceof JCTypeCast) doAssignmentCheck0(node, ((JCTypeCast)statement).expr, name);
	if (statement instanceof JCIdent) {
		if (((JCIdent)statement).name.contentEquals(name)) {
			JavacNode problemNode = node.getNodeFor(statement);
			if (problemNode != null) problemNode.addWarning(
			"You're assigning an auto-cleanup variable to something else. This is a bad idea.");
		}
	}
}
 

public void createGetterForField(AccessLevel level,
		JavacNode fieldNode, JavacNode source, boolean whineIfExists, boolean lazy, List<JCAnnotation> onMethod) {
	if (fieldNode.getKind() != Kind.FIELD) {
		source.addError("@Getter is only supported on a class or a field.");
		return;
	}
	
	JCVariableDecl fieldDecl = (JCVariableDecl)fieldNode.get();
	
	if (lazy) {
		if ((fieldDecl.mods.flags & Flags.PRIVATE) == 0 || (fieldDecl.mods.flags & Flags.FINAL) == 0) {
			source.addError("'lazy' requires the field to be private and final.");
			return;
		}
		if (fieldDecl.init == null) {
			source.addError("'lazy' requires field initialization.");
			return;
		}
	}
	
	String methodName = toGetterName(fieldNode);
	
	if (methodName == null) {
		source.addWarning("Not generating getter for this field: It does not fit your @Accessors prefix list.");
		return;
	}
	
	for (String altName : toAllGetterNames(fieldNode)) {
		switch (methodExists(altName, fieldNode, false, 0)) {
		case EXISTS_BY_LOMBOK:
			return;
		case EXISTS_BY_USER:
			if (whineIfExists) {
				String altNameExpl = "";
				if (!altName.equals(methodName)) altNameExpl = String.format(" (%s)", altName);
				source.addWarning(
					String.format("Not generating %s(): A method with that name already exists%s", methodName, altNameExpl));
			}
			return;
		default:
		case NOT_EXISTS:
			//continue scanning the other alt names.
		}
	}
	
	long access = toJavacModifier(level) | (fieldDecl.mods.flags & Flags.STATIC);
	
	injectMethod(fieldNode.up(), createGetter(access, fieldNode, fieldNode.getTreeMaker(), source.get(), lazy, onMethod));
}
 

public void createSetterForField(AccessLevel level, JavacNode fieldNode, JavacNode sourceNode, boolean whineIfExists, List<JCAnnotation> onMethod, List<JCAnnotation> onParam) {
	if (fieldNode.getKind() != Kind.FIELD) {
		fieldNode.addError("@Setter is only supported on a class or a field.");
		return;
	}
	
	JCVariableDecl fieldDecl = (JCVariableDecl)fieldNode.get();
	String methodName = toSetterName(fieldNode);
	
	if (methodName == null) {
		fieldNode.addWarning("Not generating setter for this field: It does not fit your @Accessors prefix list.");
		return;
	}
	
	if ((fieldDecl.mods.flags & Flags.FINAL) != 0) {
		fieldNode.addWarning("Not generating setter for this field: Setters cannot be generated for final fields.");
		return;
	}
	
	for (String altName : toAllSetterNames(fieldNode)) {
		switch (methodExists(altName, fieldNode, false, 1)) {
		case EXISTS_BY_LOMBOK:
			return;
		case EXISTS_BY_USER:
			if (whineIfExists) {
				String altNameExpl = "";
				if (!altName.equals(methodName)) altNameExpl = String.format(" (%s)", altName);
				fieldNode.addWarning(
					String.format("Not generating %s(): A method with that name already exists%s", methodName, altNameExpl));
			}
			return;
		default:
		case NOT_EXISTS:
			//continue scanning the other alt names.
		}
	}
	
	long access = toJavacModifier(level) | (fieldDecl.mods.flags & Flags.STATIC);
	
	JCMethodDecl createdSetter = createSetter(access, fieldNode, fieldNode.getTreeMaker(), sourceNode, onMethod, onParam);
	injectMethod(fieldNode.up(), createdSetter);
}
 

public void createWitherForField(AccessLevel level, JavacNode fieldNode, JavacNode source, boolean whineIfExists, List<JCAnnotation> onMethod, List<JCAnnotation> onParam) {
	if (fieldNode.getKind() != Kind.FIELD) {
		fieldNode.addError("@Wither is only supported on a class or a field.");
		return;
	}
	
	JCVariableDecl fieldDecl = (JCVariableDecl)fieldNode.get();
	String methodName = toWitherName(fieldNode);
	
	if (methodName == null) {
		fieldNode.addWarning("Not generating wither for this field: It does not fit your @Accessors prefix list.");
		return;
	}
	
	if ((fieldDecl.mods.flags & Flags.STATIC) != 0) {
		fieldNode.addWarning("Not generating wither for this field: Withers cannot be generated for static fields.");
		return;
	}
	
	if ((fieldDecl.mods.flags & Flags.FINAL) != 0 && fieldDecl.init != null) {
		fieldNode.addWarning("Not generating wither for this field: Withers cannot be generated for final, initialized fields.");
		return;
	}
	
	if (fieldDecl.name.toString().startsWith("$")) {
		fieldNode.addWarning("Not generating wither for this field: Withers cannot be generated for fields starting with $.");
		return;
	}
	
	for (String altName : toAllWitherNames(fieldNode)) {
		switch (methodExists(altName, fieldNode, false, 1)) {
		case EXISTS_BY_LOMBOK:
			return;
		case EXISTS_BY_USER:
			if (whineIfExists) {
				String altNameExpl = "";
				if (!altName.equals(methodName)) altNameExpl = String.format(" (%s)", altName);
				fieldNode.addWarning(
					String.format("Not generating %s(): A method with that name already exists%s", methodName, altNameExpl));
			}
			return;
		default:
		case NOT_EXISTS:
			//continue scanning the other alt names.
		}
	}
	
	long access = toJavacModifier(level);
	
	JCMethodDecl createdWither = createWither(access, fieldNode, fieldNode.getTreeMaker(), source, onMethod, onParam);
	injectMethod(fieldNode.up(), createdWither);
}