mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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351 lines
11 KiB
C#
351 lines
11 KiB
C#
// GtkSharp.Generation.InterfaceGen.cs - The Interface Generatable.
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 2004, 2007 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.Collections;
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using System.IO;
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using System.Xml;
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public class InterfaceGen : ObjectBase {
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bool consume_only;
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public InterfaceGen (XmlElement ns, XmlElement elem) : base (ns, elem, true)
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{
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consume_only = elem.HasAttribute ("consume_only");
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foreach (XmlNode node in elem.ChildNodes) {
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if (!(node is XmlElement)) continue;
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XmlElement member = (XmlElement) node;
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switch (member.Name) {
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case "signal":
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object sig = sigs [member.GetAttribute ("name")];
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if (sig == null)
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sig = new Signal (node as XmlElement, this);
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break;
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default:
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if (!base.IsNodeNameHandled (node.Name))
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Console.WriteLine ("Unexpected node " + node.Name + " in " + CName);
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break;
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}
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}
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}
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public bool IsConsumeOnly {
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get {
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return consume_only;
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}
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}
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public override string FromNative (string var, bool owned)
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{
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return QualifiedName + "Adapter.GetObject (" + var + ", " + (owned ? "true" : "false") + ")";
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}
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public override bool ValidateForSubclass ()
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{
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ArrayList invalids = new ArrayList ();
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foreach (Method method in methods.Values) {
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if (!method.Validate ()) {
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Console.WriteLine ("in type " + QualifiedName);
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invalids.Add (method);
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}
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}
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foreach (Method method in invalids)
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methods.Remove (method.Name);
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invalids.Clear ();
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return base.ValidateForSubclass ();
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}
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void GenerateStaticCtor (StreamWriter sw)
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{
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sw.WriteLine ("\t\tstatic {0} iface;", class_struct_name);
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic " + Name + "Adapter ()");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tGLib.GType.Register (_gtype, typeof({0}Adapter));", Name);
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foreach (InterfaceVM vm in interface_vms) {
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if (vm.IsValid)
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sw.WriteLine ("\t\t\tiface.{0} = new {0}NativeDelegate ({0}_cb);", vm.Name);
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}
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateInitialize (StreamWriter sw)
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{
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sw.WriteLine ("\t\tstatic int class_offset = 2 * IntPtr.Size;"); // Class size of GTypeInterface struct
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic void Initialize (IntPtr ptr, IntPtr data)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tIntPtr ifaceptr = new IntPtr (ptr.ToInt64 () + class_offset);");
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sw.WriteLine ("\t\t\t{0} native_iface = ({0}) Marshal.PtrToStructure (ifaceptr, typeof ({0}));", class_struct_name);
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foreach (InterfaceVM vm in interface_vms)
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sw.WriteLine ("\t\t\tnative_iface." + vm.Name + " = iface." + vm.Name + ";");
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sw.WriteLine ("\t\t\tMarshal.StructureToPtr (native_iface, ifaceptr, false);");
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sw.WriteLine ("\t\t\tGCHandle gch = (GCHandle) data;");
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sw.WriteLine ("\t\t\tgch.Free ();");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateCallbacks (StreamWriter sw)
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{
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foreach (InterfaceVM vm in interface_vms) {
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vm.GenerateCallback (sw, null);
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}
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}
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void GenerateCtors (StreamWriter sw)
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{
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if (!IsConsumeOnly) {
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sw.WriteLine ("\t\tpublic " + Name + "Adapter ()");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tInitHandler = new GLib.GInterfaceInitHandler (Initialize);");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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sw.WriteLine ("\t\t{0}Implementor implementor;", Name);
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sw.WriteLine ();
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sw.WriteLine ("\t\tpublic {0}Adapter ({0}Implementor implementor)", Name);
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (implementor == null)");
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sw.WriteLine ("\t\t\t\tthrow new ArgumentNullException (\"implementor\");");
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sw.WriteLine ("\t\t\tthis.implementor = implementor;");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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sw.WriteLine ("\t\tpublic " + Name + "Adapter (IntPtr handle)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (!_gtype.IsInstance (handle))");
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sw.WriteLine ("\t\t\t\tthrow new ArgumentException (\"The gobject doesn't implement the GInterface of this adapter\", \"handle\");");
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sw.WriteLine ("\t\t\tthis.handle = handle;");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateGType (StreamWriter sw)
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{
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Method m = GetMethod ("GetType");
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m.GenerateImport (sw);
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sw.WriteLine ("\t\tprivate static GLib.GType _gtype = new GLib.GType ({0} ());", m.CName);
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sw.WriteLine ();
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sw.WriteLine ("\t\tpublic override GLib.GType GType {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn _gtype;");
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateHandleProp (StreamWriter sw)
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{
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sw.WriteLine ("\t\tIntPtr handle;");
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sw.WriteLine ("\t\tpublic override IntPtr Handle {");
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sw.WriteLine ("\t\t\tget {");
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if (IsConsumeOnly) {
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sw.WriteLine ("\t\t\t\treturn handle;");
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} else {
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sw.WriteLine ("\t\t\t\tif (handle != IntPtr.Zero)");
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sw.WriteLine ("\t\t\t\t\treturn handle;");
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sw.WriteLine ("\t\t\t\treturn implementor == null ? IntPtr.Zero : implementor.Handle;");
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}
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateGetObject (StreamWriter sw)
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{
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sw.WriteLine ("\t\tpublic static " + Name + " GetObject (IntPtr handle, bool owned)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tGLib.Object obj = GLib.Object.GetObject (handle, owned);");
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sw.WriteLine ("\t\t\treturn GetObject (obj);");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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sw.WriteLine ("\t\tpublic static " + Name + " GetObject (GLib.Object obj)");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (obj == null)");
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sw.WriteLine ("\t\t\t\treturn null;");
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if (!IsConsumeOnly) {
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sw.WriteLine ("\t\t\telse if (obj is " + Name + "Implementor)");
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sw.WriteLine ("\t\t\t\treturn new {0}Adapter (obj as {0}Implementor);", Name);
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}
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sw.WriteLine ("\t\t\telse if (obj as " + Name + " == null)");
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sw.WriteLine ("\t\t\t\treturn new {0}Adapter (obj.Handle);", Name);
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sw.WriteLine ("\t\t\telse");
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sw.WriteLine ("\t\t\t\treturn obj as {0};", Name);
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateImplementorProp (StreamWriter sw)
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{
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sw.WriteLine ("\t\tpublic " + Name + "Implementor Implementor {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn implementor;");
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sw.WriteLine ("\t\t\t}");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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void GenerateAdapter (GenerationInfo gen_info)
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{
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StreamWriter sw = gen_info.Writer = gen_info.OpenStream (Name + "Adapter");
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sw.WriteLine ("namespace " + NS + " {");
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sw.WriteLine ();
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sw.WriteLine ("\tusing System;");
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sw.WriteLine ("\tusing System.Runtime.InteropServices;");
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sw.WriteLine ();
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sw.WriteLine ("#region Autogenerated code");
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sw.WriteLine ("\tpublic class " + Name + "Adapter : GLib.GInterfaceAdapter, " + QualifiedName + " {");
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sw.WriteLine ();
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if (!IsConsumeOnly) {
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GenerateClassStruct (gen_info);
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GenerateStaticCtor (sw);
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GenerateCallbacks (sw);
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GenerateInitialize (sw);
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}
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GenerateCtors (sw);
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GenerateGType (sw);
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GenerateHandleProp (sw);
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GenerateGetObject (sw);
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if (!IsConsumeOnly)
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GenerateImplementorProp (sw);
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GenProperties (gen_info, null);
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foreach (Signal sig in sigs.Values)
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sig.GenEvent (sw, null, "GLib.Object.GetObject (Handle)");
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Method temp = methods ["GetType"] as Method;
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if (temp != null)
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methods.Remove ("GetType");
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GenMethods (gen_info, new Hashtable (), this);
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if (temp != null)
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methods ["GetType"] = temp;
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sw.WriteLine ("#endregion");
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string custom = Path.Combine (gen_info.CustomDir, Name + "Adapter.custom");
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if (File.Exists (custom)) {
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sw.WriteLine ("#region Customized extensions");
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sw.WriteLine ("#line 1 \"" + Name + "Adapter.custom\"");
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using (StreamReader sr = new StreamReader(new FileStream (custom, FileMode.Open, FileAccess.Read)))
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sw.WriteLine (sr.ReadToEnd ());
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sw.WriteLine ("#endregion");
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}
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sw.WriteLine ("\t}");
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sw.WriteLine ("}");
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sw.Close ();
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gen_info.Writer = null;
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}
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void GenerateImplementorIface (StreamWriter sw)
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{
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if (IsConsumeOnly)
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return;
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sw.WriteLine ();
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sw.WriteLine ("\t[GLib.GInterface (typeof (" + Name + "Adapter))]");
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string access = IsInternal ? "internal" : "public";
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sw.WriteLine ("\t" + access + " interface " + Name + "Implementor : GLib.IWrapper {");
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sw.WriteLine ();
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Hashtable vm_table = new Hashtable ();
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foreach (InterfaceVM vm in interface_vms) {
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vm_table [vm.Name] = vm;
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}
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foreach (InterfaceVM vm in interface_vms) {
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if (vm_table [vm.Name] == null)
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continue;
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else if (!vm.IsValid) {
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vm_table.Remove (vm.Name);
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continue;
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} else if (vm.IsGetter || vm.IsSetter) {
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string cmp_name = (vm.IsGetter ? "Set" : "Get") + vm.Name.Substring (3);
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InterfaceVM cmp = vm_table [cmp_name] as InterfaceVM;
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if (cmp != null && (cmp.IsGetter || cmp.IsSetter)) {
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if (vm.IsSetter)
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cmp.GenerateDeclaration (sw, vm);
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else
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vm.GenerateDeclaration (sw, cmp);
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vm_table.Remove (cmp.Name);
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} else
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vm.GenerateDeclaration (sw, null);
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vm_table.Remove (vm.Name);
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} else {
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vm.GenerateDeclaration (sw, null);
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vm_table.Remove (vm.Name);
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}
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}
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sw.WriteLine ("\t}");
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}
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public override void Generate (GenerationInfo gen_info)
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{
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GenerateAdapter (gen_info);
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StreamWriter sw = gen_info.Writer = gen_info.OpenStream (Name);
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sw.WriteLine ("namespace " + NS + " {");
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sw.WriteLine ();
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sw.WriteLine ("\tusing System;");
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sw.WriteLine ();
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sw.WriteLine ("#region Autogenerated code");
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string access = IsInternal ? "internal" : "public";
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sw.WriteLine ("\t" + access + " interface " + Name + " : GLib.IWrapper {");
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sw.WriteLine ();
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foreach (Signal sig in sigs.Values) {
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sig.GenerateDecl (sw);
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sig.GenEventHandler (gen_info);
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}
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foreach (Method method in methods.Values) {
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if (IgnoreMethod (method, this))
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continue;
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method.GenerateDecl (sw);
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}
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foreach (Property prop in props.Values)
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prop.GenerateDecl (sw, "\t\t");
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AppendCustom (sw, gen_info.CustomDir);
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sw.WriteLine ("\t}");
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GenerateImplementorIface (sw);
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sw.WriteLine ("#endregion");
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sw.WriteLine ("}");
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sw.Close ();
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gen_info.Writer = null;
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Statistics.IFaceCount++;
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}
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}
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}
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