private void validateFieldAnnotations() {
for (FieldNode fieldNode : annotatedClass.getFields()) {
if (shouldFieldBeIgnored(fieldNode)) continue;
AnnotationNode annotation = getAnnotation(fieldNode, DSL_FIELD_ANNOTATION);
if (annotation == null) continue;
if (ASTHelper.isListOrMap(fieldNode.getType())) return;
if (annotation.getMember("members") != null) {
addCompileError(
String.format(
"@Field.members is only valid for List or Map fields, but field %s is of type %s",
fieldNode.getName(), fieldNode.getType().getName()),
annotation);
}
}
}
private void validateFields(BlockStatement block) {
Validation.Option mode =
getEnumMemberValue(
getAnnotation(annotatedClass, VALIDATION_ANNOTATION),
"option",
Validation.Option.class,
Validation.Option.IGNORE_UNMARKED);
for (FieldNode fieldNode : annotatedClass.getFields()) {
if (shouldFieldBeIgnoredForValidation(fieldNode)) continue;
ClosureExpression validationClosure =
createGroovyTruthClosureExpression(block.getVariableScope());
String message = null;
AnnotationNode validateAnnotation = getAnnotation(fieldNode, VALIDATE_ANNOTATION);
if (validateAnnotation != null) {
message =
getMemberStringValue(
validateAnnotation, "message", "'" + fieldNode.getName() + "' must be set!");
Expression member = validateAnnotation.getMember("value");
if (member instanceof ClassExpression) {
ClassNode memberType = member.getType();
if (memberType.equals(ClassHelper.make(Validate.Ignore.class))) continue;
else if (!memberType.equals(ClassHelper.make(Validate.GroovyTruth.class))) {
addError(
"value of Validate must be either Validate.GroovyTruth, Validate.Ignore or a closure.",
fieldNode);
}
} else if (member instanceof ClosureExpression) {
validationClosure = (ClosureExpression) member;
}
}
if (validateAnnotation != null || mode == Validation.Option.VALIDATE_UNMARKED) {
block.addStatement(
new AssertStatement(
new BooleanExpression(
callX(validationClosure, "call", args(varX(fieldNode.getName())))),
message == null ? ConstantExpression.NULL : new ConstantExpression(message)));
}
}
}
@SuppressWarnings("unchecked")
public <T extends Enum> T getEnumMemberValue(
AnnotationNode node, String name, Class<T> type, T defaultValue) {
if (node == null) return defaultValue;
final PropertyExpression member = (PropertyExpression) node.getMember(name);
if (member == null) return defaultValue;
if (!type.equals(member.getObjectExpression().getType().getTypeClass())) return defaultValue;
try {
String value = member.getPropertyAsString();
Method fromString = type.getMethod("valueOf", String.class);
return (T) fromString.invoke(null, value);
} catch (Exception e) {
return defaultValue;
}
}