mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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416 lines
13 KiB
C#
416 lines
13 KiB
C#
// GtkSharp.Generation.ObjectGen.cs - The Object Generatable.
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//
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// Author: Mike Kestner <mkestner@ximian.com>
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//
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 2003-2004 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.Text;
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using System.Xml;
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public class ObjectGen : ObjectBase {
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private ArrayList custom_attrs = new ArrayList();
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private ArrayList strings = new ArrayList();
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private Hashtable childprops = new Hashtable();
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private static Hashtable dirs = new Hashtable ();
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public ObjectGen (XmlElement ns, XmlElement elem) : base (ns, elem, false)
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{
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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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if (member.HasAttribute ("hidden") && member.GetAttribute ("hidden") == "1") continue;
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switch (node.Name) {
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case "callback":
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Statistics.IgnoreCount++;
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break;
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case "custom-attribute":
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custom_attrs.Add (member.InnerXml);
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break;
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case "static-string":
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strings.Add (node);
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break;
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case "childprop":
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string name = member.GetAttribute ("name");
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while (childprops.ContainsKey (name))
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name += "mangled";
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childprops.Add (name, new ChildProperty (member, this));
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break;
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default:
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if (!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 override bool Validate ()
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{
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ArrayList invalids = new ArrayList ();
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foreach (ChildProperty prop in childprops.Values) {
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if (!prop.Validate ()) {
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Console.WriteLine ("in Object " + QualifiedName);
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invalids.Add (prop);
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}
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}
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foreach (ChildProperty prop in invalids)
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childprops.Remove (prop);
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return base.Validate ();
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}
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private bool DisableVoidCtor {
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get {
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return Elem.HasAttribute ("disable_void_ctor");
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}
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}
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private bool DisableGTypeCtor {
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get {
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return Elem.HasAttribute ("disable_gtype_ctor");
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}
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}
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private class DirectoryInfo {
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public string assembly_name;
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public Hashtable objects;
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public DirectoryInfo (string assembly_name) {
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this.assembly_name = assembly_name;
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objects = new Hashtable ();
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}
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}
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private static DirectoryInfo GetDirectoryInfo (string dir, string assembly_name)
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{
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DirectoryInfo result;
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if (dirs.ContainsKey (dir)) {
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result = dirs [dir] as DirectoryInfo;
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if (result.assembly_name != assembly_name) {
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Console.WriteLine ("Can't put multiple assemblies in one directory.");
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return null;
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}
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return result;
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}
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result = new DirectoryInfo (assembly_name);
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dirs.Add (dir, result);
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return result;
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}
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public override void Generate (GenerationInfo gen_info)
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{
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gen_info.CurrentType = Name;
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string asm_name = gen_info.AssemblyName.Length == 0 ? NS.ToLower () + "-sharp" : gen_info.AssemblyName;
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DirectoryInfo di = GetDirectoryInfo (gen_info.Dir, asm_name);
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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 ("\tusing System.Collections;");
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sw.WriteLine ("\tusing System.Runtime.InteropServices;");
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sw.WriteLine ();
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SymbolTable table = SymbolTable.Table;
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sw.WriteLine ("#region Autogenerated code");
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if (IsDeprecated)
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sw.WriteLine ("\t[Obsolete]");
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foreach (string attr in custom_attrs)
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sw.WriteLine ("\t" + attr);
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sw.Write ("\t{0} {1}class " + Name, IsInternal ? "internal" : "public", IsAbstract ? "abstract " : "");
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string cs_parent = table.GetCSType(Elem.GetAttribute("parent"));
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if (cs_parent != "") {
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di.objects.Add (CName, QualifiedName);
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sw.Write (" : " + cs_parent);
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}
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foreach (string iface in interfaces) {
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if (Parent != null && Parent.Implements (iface))
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continue;
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sw.Write (", " + table.GetCSType (iface));
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}
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foreach (string iface in managed_interfaces) {
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if (Parent != null && Parent.Implements (iface))
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continue;
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sw.Write (", " + iface);
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}
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sw.WriteLine (" {");
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sw.WriteLine ();
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GenCtors (gen_info);
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GenProperties (gen_info, null);
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GenFields (gen_info);
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GenChildProperties (gen_info);
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bool has_sigs = (sigs != null && sigs.Count > 0);
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if (!has_sigs) {
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foreach (string iface in interfaces) {
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InterfaceGen igen = table.GetClassGen (iface) as InterfaceGen;
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if (igen != null && igen.Signals != null) {
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has_sigs = true;
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break;
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}
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}
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}
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if (has_sigs && Elem.HasAttribute("parent")) {
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GenSignals (gen_info, null);
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}
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GenClassMembers (gen_info, cs_parent);
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GenMethods (gen_info, null, null);
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if (interfaces.Count != 0) {
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Hashtable all_methods = new Hashtable ();
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foreach (Method m in Methods.Values)
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all_methods[m.Name] = m;
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Hashtable collisions = new Hashtable ();
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foreach (string iface in interfaces) {
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ClassBase igen = table.GetClassGen (iface);
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foreach (Method m in igen.Methods.Values) {
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Method collision = all_methods[m.Name] as Method;
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if (collision != null && collision.Signature.Types == m.Signature.Types)
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collisions[m.Name] = true;
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else
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all_methods[m.Name] = m;
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}
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}
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foreach (string iface in interfaces) {
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if (Parent != null && Parent.Implements (iface))
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continue;
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InterfaceGen igen = table.GetClassGen (iface) as InterfaceGen;
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igen.GenMethods (gen_info, collisions, this);
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igen.GenProperties (gen_info, this);
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igen.GenSignals (gen_info, this);
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igen.GenVirtualMethods (gen_info, this);
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}
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}
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foreach (XmlElement str in strings) {
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sw.Write ("\t\tpublic static string " + str.GetAttribute ("name"));
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sw.WriteLine (" {\n\t\t\t get { return \"" + str.GetAttribute ("value") + "\"; }\n\t\t}");
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}
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if (cs_parent != String.Empty && GetExpected (CName) != QualifiedName) {
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic " + Name + " ()");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tGtkSharp." + Studlify (asm_name) + ".ObjectManager.Initialize ();");
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sw.WriteLine ("\t\t}");
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}
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sw.WriteLine ("#endregion");
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AppendCustom (sw, gen_info.CustomDir);
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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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Statistics.ObjectCount++;
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}
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protected override void GenCtors (GenerationInfo gen_info)
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{
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if (!Elem.HasAttribute("parent"))
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return;
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if (!DisableGTypeCtor) {
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gen_info.Writer.WriteLine("\t\t[Obsolete]");
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gen_info.Writer.WriteLine("\t\tprotected " + Name + "(GLib.GType gtype) : base(gtype) {}");
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}
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gen_info.Writer.WriteLine("\t\tpublic " + Name + "(IntPtr raw) : base(raw) {}");
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if (ctors.Count == 0 && !DisableVoidCtor) {
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gen_info.Writer.WriteLine();
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gen_info.Writer.WriteLine("\t\tprotected " + Name + "() : base(IntPtr.Zero)");
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gen_info.Writer.WriteLine("\t\t{");
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gen_info.Writer.WriteLine("\t\t\tCreateNativeObject (new string [0], new GLib.Value [0]);");
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gen_info.Writer.WriteLine("\t\t}");
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}
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gen_info.Writer.WriteLine();
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base.GenCtors (gen_info);
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}
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protected void GenChildProperties (GenerationInfo gen_info)
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{
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if (childprops.Count == 0)
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return;
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StreamWriter sw = gen_info.Writer;
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ObjectGen child_ancestor = Parent as ObjectGen;
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while (child_ancestor.CName != "GtkContainer" &&
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child_ancestor.childprops.Count == 0)
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child_ancestor = child_ancestor.Parent as ObjectGen;
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sw.WriteLine ("\t\tpublic class " + Name + "Child : " + child_ancestor.NS + "." + child_ancestor.Name + "." + child_ancestor.Name + "Child {");
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sw.WriteLine ("\t\t\tprotected internal " + Name + "Child (Gtk.Container parent, Gtk.Widget child) : base (parent, child) {}");
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sw.WriteLine ("");
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foreach (ChildProperty prop in childprops.Values)
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prop.Generate (gen_info, "\t\t\t", null);
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sw.WriteLine ("\t\t}");
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sw.WriteLine ("");
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sw.WriteLine ("\t\tpublic override Gtk.Container.ContainerChild this [Gtk.Widget child] {");
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sw.WriteLine ("\t\t\tget {");
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sw.WriteLine ("\t\t\t\treturn new " + Name + "Child (this, child);");
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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 GenClassMembers (GenerationInfo gen_info, string cs_parent)
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{
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GenVirtualMethods (gen_info, null);
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if (class_struct_name == null || !CanGenerateClassStruct) return;
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StreamWriter sw = gen_info.Writer;
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GenerateClassStruct (gen_info);
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if (cs_parent == "")
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sw.WriteLine ("\t\tstatic uint class_offset = 0;");
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else
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sw.WriteLine ("\t\tstatic uint class_offset = ((GLib.GType) typeof ({0})).ClassSize;", cs_parent);
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sw.WriteLine ("\t\tstatic Hashtable class_structs;");
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic {0} GetClassStruct (GLib.GType gtype, bool use_cache)", class_struct_name);
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (class_structs == null)");
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sw.WriteLine ("\t\t\t\tclass_structs = new Hashtable ();");
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sw.WriteLine ();
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sw.WriteLine ("\t\t\tif (use_cache && class_structs.Contains (gtype))");
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sw.WriteLine ("\t\t\t\treturn ({0}) class_structs [gtype];", class_struct_name);
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sw.WriteLine ("\t\t\telse {");
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sw.WriteLine ("\t\t\t\tIntPtr class_ptr = new IntPtr (gtype.ClassPtr.ToInt64 () + class_offset);");
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sw.WriteLine ("\t\t\t\t{0} class_struct = ({0}) Marshal.PtrToStructure (class_ptr, typeof ({0}));", class_struct_name);
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sw.WriteLine ("\t\t\t\tif (use_cache)");
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sw.WriteLine ("\t\t\t\t\tclass_structs.Add (gtype, class_struct);");
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sw.WriteLine ("\t\t\t\treturn class_struct;");
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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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sw.WriteLine ("\t\tstatic void OverrideClassStruct (GLib.GType gtype, {0} class_struct)", class_struct_name);
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tIntPtr class_ptr = new IntPtr (gtype.ClassPtr.ToInt64 () + class_offset);");
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sw.WriteLine ("\t\t\tMarshal.StructureToPtr (class_struct, class_ptr, false);");
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sw.WriteLine ("\t\t}");
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sw.WriteLine ();
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}
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/* Keep this in sync with the one in glib/GType.cs */
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private static string GetExpected (string cname)
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{
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for (int i = 1; i < cname.Length; i++) {
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if (Char.IsUpper (cname[i])) {
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if (i == 1 && cname[0] == 'G')
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return "GLib." + cname.Substring (1);
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else
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return cname.Substring (0, i) + "." + cname.Substring (i);
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}
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}
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throw new ArgumentException ("cname doesn't follow the NamespaceType capitalization style: " + cname);
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}
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private static bool NeedsMap (Hashtable objs, string assembly_name)
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{
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foreach (string key in objs.Keys)
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if (GetExpected (key) != ((string) objs[key]))
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return true;
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return false;
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}
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private static string Studlify (string name)
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{
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string result = "";
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string[] subs = name.Split ('-');
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foreach (string sub in subs)
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result += Char.ToUpper (sub[0]) + sub.Substring (1);
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return result;
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}
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public static void GenerateMappers ()
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{
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foreach (string dir in dirs.Keys) {
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DirectoryInfo di = dirs[dir] as DirectoryInfo;
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if (!NeedsMap (di.objects, di.assembly_name))
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continue;
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GenerationInfo gen_info = new GenerationInfo (dir, di.assembly_name);
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GenerateMapper (di, gen_info);
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}
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}
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private static void GenerateMapper (DirectoryInfo dir_info, GenerationInfo gen_info)
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{
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StreamWriter sw = gen_info.OpenStream ("ObjectManager");
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sw.WriteLine ("namespace GtkSharp." + Studlify (dir_info.assembly_name) + " {");
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sw.WriteLine ();
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sw.WriteLine ("\tpublic class ObjectManager {");
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic bool initialized = false;");
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sw.WriteLine ("\t\t// Call this method from the appropriate module init function.");
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sw.WriteLine ("\t\tpublic static void Initialize ()");
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sw.WriteLine ("\t\t{");
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sw.WriteLine ("\t\t\tif (initialized)");
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sw.WriteLine ("\t\t\t\treturn;");
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sw.WriteLine ("");
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sw.WriteLine ("\t\t\tinitialized = true;");
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foreach (string key in dir_info.objects.Keys) {
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if (GetExpected(key) != ((string) dir_info.objects[key]))
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sw.WriteLine ("\t\t\tGLib.GType.Register ({0}.GType, typeof ({0}));", dir_info.objects [key]);
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}
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sw.WriteLine ("\t\t}");
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sw.WriteLine ("\t}");
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sw.WriteLine ("}");
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sw.Close ();
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}
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}
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}
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