/**
* Converts {@link OperatorPortDeclaration} into a member of {@link OperatorInfo}.
*
* @param var target port declaration
* @param position the factory parameter position
* @return related meta-data
* @throws IllegalArgumentException if some parameters were {@code null}
*/
public Expression toMetaData(OperatorPortDeclaration var, int position) {
Precondition.checkMustNotBeNull(var, "var"); // $NON-NLS-1$
NamedType type;
TypeMirror representation = var.getType().getRepresentation();
List<AnnotationElement> members = new ArrayList<>();
members.add(
factory.newAnnotationElement(
factory.newSimpleName("name"), // $NON-NLS-1$
Models.toLiteral(factory, var.getName())));
members.add(
factory.newAnnotationElement(
factory.newSimpleName("type"), // $NON-NLS-1$
factory.newClassLiteral(t(environment.getErasure(representation)))));
if (var.getKind() == OperatorPortDeclaration.Kind.INPUT) {
type = (NamedType) t(OperatorInfo.Input.class);
members.add(
factory.newAnnotationElement(
factory.newSimpleName("position"), // $NON-NLS-1$
Models.toLiteral(factory, position)));
String typeVariable = getTypeVariableName(representation);
if (typeVariable != null) {
members.add(
factory.newAnnotationElement(
factory.newSimpleName("typeVariable"), // $NON-NLS-1$
Models.toLiteral(factory, typeVariable)));
}
} else if (var.getKind() == OperatorPortDeclaration.Kind.OUTPUT) {
type = (NamedType) t(OperatorInfo.Output.class);
String typeVariable = getTypeVariableName(representation);
if (typeVariable != null) {
members.add(
factory.newAnnotationElement(
factory.newSimpleName("typeVariable"), // $NON-NLS-1$
Models.toLiteral(factory, typeVariable)));
}
} else if (var.getKind() == OperatorPortDeclaration.Kind.CONSTANT) {
type = (NamedType) t(OperatorInfo.Parameter.class);
members.add(
factory.newAnnotationElement(
factory.newSimpleName("position"), // $NON-NLS-1$
Models.toLiteral(factory, position)));
String typeVariable = getTypeVariableNameInClass(representation);
if (typeVariable != null) {
members.add(
factory.newAnnotationElement(
factory.newSimpleName("typeVariable"), // $NON-NLS-1$
Models.toLiteral(factory, typeVariable)));
}
} else {
throw new AssertionError(var);
}
return factory.newNormalAnnotation(type, members);
}
