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https://github.com/Ryujinx/GtkSharp.git
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11286d19c6
* generator/ReturnValue.cs: use new GLib.Opaque.OwnedCopy for owned opaque return values. * glib/Opaque.cs: introduce OwnedCopy property to support returning owned opaque instances from native to managed callbacks. [Fixes #374641] svn path=/trunk/gtk-sharp/; revision=100762
171 lines
4.5 KiB
C#
171 lines
4.5 KiB
C#
// GtkSharp.Generation.ReturnValue.cs - The ReturnValue Generatable.
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//
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// Author: Mike Kestner <mkestner@novell.com>
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//
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// Copyright (c) 2004-2005 Novell, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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namespace GtkSharp.Generation {
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using System;
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using System.Xml;
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public class ReturnValue {
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private XmlElement elem;
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bool is_null_term;
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bool is_array;
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bool elements_owned;
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bool owned;
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string ctype = String.Empty;
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string element_ctype = String.Empty;
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public ReturnValue (XmlElement elem)
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{
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this.elem = elem;
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if (elem != null) {
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is_null_term = elem.HasAttribute ("null_term_array");
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is_array = elem.HasAttribute ("array");
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elements_owned = elem.GetAttribute ("elements_owned") == "true";
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owned = elem.GetAttribute ("owned") == "true";
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ctype = elem.GetAttribute("type");
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element_ctype = elem.GetAttribute ("element_type");
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}
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}
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public string CType {
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get {
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return ctype;
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}
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}
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public string CSType {
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get {
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if (IGen == null)
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return String.Empty;
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if (ElementType != String.Empty)
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return ElementType + "[]";
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return IGen.QualifiedName + (is_array || is_null_term ? "[]" : String.Empty);
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}
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}
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public string DefaultValue {
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get {
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if (IGen == null)
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return String.Empty;
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return IGen.DefaultValue;
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}
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}
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string ElementType {
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get {
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if (element_ctype.Length > 0)
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return SymbolTable.Table.GetCSType (element_ctype);
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return String.Empty;
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}
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}
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IGeneratable igen;
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IGeneratable IGen {
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get {
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if (igen == null)
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igen = SymbolTable.Table [CType];
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return igen;
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}
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}
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public bool IsVoid {
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get {
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return CSType == "void";
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}
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}
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public string MarshalType {
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get {
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if (IGen == null)
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return String.Empty;
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else if (is_null_term)
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return "IntPtr";
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return IGen.MarshalReturnType + (is_array ? "[]" : String.Empty);
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}
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}
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public string ToNativeType {
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get {
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if (IGen == null)
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return String.Empty;
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else if (is_null_term)
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return "IntPtr"; //FIXME
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return IGen.ToNativeReturnType + (is_array ? "[]" : String.Empty);
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}
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}
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public string FromNative (string var)
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{
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if (IGen == null)
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return String.Empty;
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if (ElementType != String.Empty) {
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string type_str = "typeof (" + ElementType + ")";
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string args = type_str + ", " + (owned ? "true" : "false") + ", " + (elements_owned ? "true" : "false");
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return String.Format ("({0}[]) GLib.Marshaller.ListToArray ({1}, {2})", ElementType, IGen.FromNativeReturn (var + ", " + args), type_str);
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} else if (IGen is HandleBase)
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return ((HandleBase)IGen).FromNative (var, owned);
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else if (is_null_term)
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return String.Format ("GLib.Marshaller.NullTermPtrToStringArray ({0}, {1})", var, owned ? "true" : "false");
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else
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return IGen.FromNativeReturn (var);
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}
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public string ToNative (string var)
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{
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if (IGen == null)
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return String.Empty;
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if (ElementType.Length > 0) {
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string args = ", typeof (" + ElementType + "), " + (owned ? "true" : "false") + ", " + (elements_owned ? "true" : "false");
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var = "new " + IGen.QualifiedName + "(" + var + args + ")";
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} else if (is_null_term)
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return String.Format ("GLib.Marshaller.StringArrayToNullTermPtr ({0})", var);
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if (IGen is IManualMarshaler)
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return (IGen as IManualMarshaler).AllocNative (var);
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else if (IGen is ObjectGen && owned)
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return var + " == null ? IntPtr.Zero : " + var + ".OwnedHandle";
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else if (IGen is OpaqueGen && owned)
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return var + " == null ? IntPtr.Zero : " + var + ".OwnedCopy";
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else
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return IGen.ToNativeReturn (var);
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}
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public bool Validate ()
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{
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if (MarshalType == "" || CSType == "") {
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Console.Write("rettype: " + CType);
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return false;
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}
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return true;
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}
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}
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}
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