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/* typereference.vala
*
* Copyright (C) 2008-2011 Florian Brosch
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Florian Brosch <flo.brosch@gmail.com>
*/
using Valadoc.Content;
/**
* A reference to a data type.
*/
public class Valadoc.Api.TypeReference : Item {
private Vala.ArrayList<TypeReference> type_arguments = new Vala.ArrayList<TypeReference> ();
private string? dbus_type_signature;
private Ownership ownership;
public TypeReference (Item parent, bool is_dynamic,
bool is_nullable, string? dbus_type_signature, Vala.DataType? data)
{
base (data);
this.dbus_type_signature = dbus_type_signature;
this.is_nullable = is_nullable;
this.is_dynamic = is_dynamic;
this.ownership = get_type_reference_ownership (data);
this.parent = parent;
}
Ownership get_type_reference_ownership (Vala.DataType? element) {
unowned Vala.DataType? type = element;
if (type != null) {
if (type.parent_node is Vala.Parameter) {
if (((Vala.Parameter) type.parent_node).direction == Vala.ParameterDirection.IN) {
if (type.value_owned) {
return Ownership.OWNED;
}
} else {
if (type.is_weak ()) {
return Ownership.UNOWNED;
}
}
return Ownership.DEFAULT;
} else if (type.parent_node is Vala.PropertyAccessor) {
if (((Vala.PropertyAccessor) type.parent_node).value_type.value_owned) {
return Ownership.OWNED;
}
return Ownership.DEFAULT;
} else if (type.parent_node is Vala.Constant) {
return Ownership.DEFAULT;
}
if (type.is_weak ()) {
return Ownership.UNOWNED;
}
}
return Ownership.DEFAULT;
}
/**
* Returns a copy of the list of generic type arguments.
*
* @return type argument list
*/
public Vala.Collection<TypeReference> get_type_arguments () {
return this.type_arguments;
}
public void add_type_argument (TypeReference type_ref) {
type_arguments.add (type_ref);
}
/**
* The referred data type.
*/
public Item? data_type {
set;
get;
}
/**
* Specifies that the expression is owned.
*/
public bool is_owned {
get {
return ownership == Ownership.OWNED;
}
}
/**
* Specifies that the expression is weak.
*/
public bool is_weak {
get {
return ownership == Ownership.WEAK;
}
}
/**
* Specifies that the expression is unwoned.
*/
public bool is_unowned {
get {
return ownership == Ownership.UNOWNED;
}
}
/**
* Specifies that the expression is dynamic.
*/
public bool is_dynamic {
private set;
get;
}
/**
* Specifies that the expression may be null.
*/
public bool is_nullable {
private set;
get;
}
public string? get_dbus_type_signature () {
return dbus_type_signature;
}
/**
* {@inheritDoc}
*/
protected override Inline build_signature () {
var signature = new SignatureBuilder ();
if (is_dynamic) {
signature.append_keyword ("dynamic");
}
if (is_weak) {
signature.append_keyword ("weak");
} else if (is_owned) {
signature.append_keyword ("owned");
} else if (is_unowned) {
signature.append_keyword ("unowned");
}
if (data_type == null) {
signature.append_keyword ("void");
} else if (data_type is Symbol) {
signature.append_type ((Symbol) data_type);
} else {
signature.append_content (data_type.signature);
}
if (type_arguments.size > 0) {
signature.append ("<", false);
bool first = true;
foreach (Item param in type_arguments) {
if (!first) {
signature.append (",", false);
}
signature.append_content (param.signature, false);
first = false;
}
signature.append (">", false);
}
if (is_nullable) {
signature.append ("?", false);
}
return signature.get ();
}
}
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