1/* valatypesymbol.vala
2 *
3 * Copyright (C) 2006-2010  Jürg Billeter
4 * Copyright (C) 2006-2008  Raffaele Sandrini
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
19 *
20 * Author:
21 * 	Jürg Billeter <j@bitron.ch>
22 *	Raffaele Sandrini <raffaele@sandrini.ch>
23 */
24
25using GLib;
26
27/**
28 * Represents a runtime data type. This data type may be defined in Vala source
29 * code or imported from an external library with a Vala API file.
30 */
31public abstract class Vala.TypeSymbol : Symbol {
32	protected TypeSymbol (string? name, SourceReference? source_reference = null, Comment? comment = null) {
33		base (name, source_reference, comment);
34	}
35
36	/**
37	 * Checks whether this data type has value or reference type semantics.
38	 *
39	 * @return true if this data type has reference type semantics
40	 */
41	public virtual bool is_reference_type () {
42		return false;
43	}
44
45	/**
46	 * Checks whether this data type is equal to or a subtype of the
47	 * specified data type.
48	 *
49	 * @param t a data type
50	 * @return  true if t is a supertype of this data type, false otherwise
51	 */
52	public virtual bool is_subtype_of (TypeSymbol t) {
53		return (this == t);
54	}
55
56	/**
57	 * Return the index of the specified type parameter name.
58	 */
59	public virtual int get_type_parameter_index (string name) {
60		return -1;
61	}
62}
63