public PrimitiveType unboxedType(TypeMirror t) {
if (t.getKind() != TypeKind.DECLARED) throw new IllegalArgumentException(t.toString());
Type unboxed = types.unboxedType((Type) t);
if (!unboxed.isPrimitive()) // only true primitives, not void
throw new IllegalArgumentException(t.toString());
return unboxed;
}
public ArrayType getArrayType(TypeMirror componentType) {
switch (componentType.getKind()) {
case VOID:
case EXECUTABLE:
case WILDCARD: // heh!
case PACKAGE:
throw new IllegalArgumentException(componentType.toString());
}
return new Type.ArrayType((Type) componentType, syms.arrayClass);
}
// where
private DeclaredType getDeclaredType0(Type outer, ClassSymbol sym, TypeMirror... typeArgs) {
if (typeArgs.length != sym.type.getTypeArguments().length())
throw new IllegalArgumentException("Incorrect number of type arguments");
ListBuffer<Type> targs = new ListBuffer<Type>();
for (TypeMirror t : typeArgs) {
if (!(t instanceof ReferenceType || t instanceof WildcardType))
throw new IllegalArgumentException(t.toString());
targs.append((Type) t);
}
// TODO: Would like a way to check that type args match formals.
return (DeclaredType) new Type.ClassType(outer, targs.toList(), sym);
}
public Element asElement(TypeMirror t) {
switch (t.getKind()) {
case DECLARED:
case ERROR:
case TYPEVAR:
Type type = cast(Type.class, t);
return type.asElement();
default:
return null;
}
}
/** Throws an IllegalArgumentException if a type's kind is one of a set. */
private void validateTypeNotIn(TypeMirror t, Set<TypeKind> invalidKinds) {
if (invalidKinds.contains(t.getKind())) throw new IllegalArgumentException(t.toString());
}
public TypeMirror erasure(TypeMirror t) {
if (t.getKind() == TypeKind.PACKAGE) throw new IllegalArgumentException(t.toString());
return types.erasure((Type) t);
}