mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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396 lines
9.5 KiB
C#
396 lines
9.5 KiB
C#
// GtkSharp.Generation.ClassBase.cs - Common code between object
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// and interface wrappers
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//
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// Authors: Rachel Hestilow <hestilow@ximian.com>
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// Mike Kestner <mkestner@speakeasy.net>
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//
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// Copyright (c) 2002 Rachel Hestilow
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 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.Xml;
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public abstract class ClassBase : GenBase {
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protected Hashtable props = new Hashtable();
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protected Hashtable fields = new Hashtable();
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protected Hashtable methods = new Hashtable();
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protected ArrayList interfaces = new ArrayList();
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protected ArrayList managed_interfaces = new ArrayList();
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protected ArrayList ctors = new ArrayList();
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private bool ctors_initted = false;
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private Hashtable clash_map;
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private bool deprecated = false;
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private bool isabstract = false;
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public Hashtable Methods {
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get {
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return methods;
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}
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}
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public ClassBase Parent {
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get {
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string parent = Elem.GetAttribute("parent");
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if (parent == "")
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return null;
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else
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return SymbolTable.Table.GetClassGen(parent);
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}
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}
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protected ClassBase (XmlElement ns, XmlElement elem) : base (ns, elem) {
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if (elem.HasAttribute ("deprecated")) {
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string attr = elem.GetAttribute ("deprecated");
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deprecated = attr == "1" || attr == "true";
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}
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if (elem.HasAttribute ("abstract")) {
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string attr = elem.GetAttribute ("abstract");
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isabstract = attr == "1" || attr == "true";
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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"))
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continue;
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string name;
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switch (node.Name) {
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case "method":
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name = member.GetAttribute("name");
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while (methods.ContainsKey(name))
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name += "mangled";
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methods.Add (name, new Method (member, this));
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break;
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case "property":
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name = member.GetAttribute("name");
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while (props.ContainsKey(name))
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name += "mangled";
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props.Add (name, new Property (member, this));
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break;
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case "field":
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name = member.GetAttribute("name");
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while (fields.ContainsKey (name))
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name += "mangled";
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fields.Add (name, new ObjectField (member, this));
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break;
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case "implements":
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ParseImplements (member);
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break;
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case "constructor":
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ctors.Add (new Ctor (member, this));
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break;
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default:
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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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foreach (string iface in interfaces) {
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InterfaceGen igen = SymbolTable.Table[iface] as InterfaceGen;
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if (igen == null) {
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Console.WriteLine (QualifiedName + " implements unknown GInterface " + iface);
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return false;
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}
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if (!igen.ValidateForSubclass ()) {
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Console.WriteLine (QualifiedName + " implements invalid GInterface " + iface);
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return false;
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}
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}
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ArrayList invalids = new ArrayList ();
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foreach (Property prop in props.Values) {
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if (!prop.Validate ()) {
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Console.WriteLine ("in type " + QualifiedName);
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invalids.Add (prop);
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}
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}
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foreach (Property prop in invalids)
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props.Remove (prop.Name);
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invalids.Clear ();
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foreach (ObjectField field in fields.Values) {
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if (!field.Validate ()) {
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Console.WriteLine ("in type " + QualifiedName);
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invalids.Add (field);
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}
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}
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foreach (ObjectField field in invalids)
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fields.Remove (field.Name);
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invalids.Clear ();
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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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foreach (Ctor ctor in ctors) {
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if (!ctor.Validate ()) {
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Console.WriteLine ("in type " + QualifiedName);
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invalids.Add (ctor);
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}
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}
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foreach (Ctor ctor in invalids)
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ctors.Remove (ctor);
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invalids.Clear ();
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return true;
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}
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public bool IsDeprecated {
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get {
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return deprecated;
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}
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}
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public bool IsAbstract {
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get {
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return isabstract;
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}
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}
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public abstract string AssignToName { get; }
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public abstract string CallByName ();
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public override string DefaultValue {
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get {
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return "null";
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}
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}
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protected virtual bool IsNodeNameHandled (string name)
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{
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switch (name) {
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case "method":
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case "property":
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case "field":
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case "signal":
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case "implements":
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case "constructor":
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case "disabledefaultconstructor":
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return true;
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default:
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return false;
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}
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}
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public void GenProperties (GenerationInfo gen_info, ClassBase implementor)
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{
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if (props.Count == 0)
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return;
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foreach (Property prop in props.Values)
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prop.Generate (gen_info, "\t\t", implementor);
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}
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protected void GenFields (GenerationInfo gen_info)
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{
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foreach (ObjectField field in fields.Values)
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field.Generate (gen_info, "\t\t");
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}
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private void ParseImplements (XmlElement member)
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{
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foreach (XmlNode node in member.ChildNodes) {
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if (node.Name != "interface")
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continue;
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XmlElement element = (XmlElement) node;
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if (element.HasAttribute ("hidden"))
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continue;
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if (element.HasAttribute ("cname"))
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interfaces.Add (element.GetAttribute ("cname"));
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else if (element.HasAttribute ("name"))
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managed_interfaces.Add (element.GetAttribute ("name"));
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}
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}
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protected bool IgnoreMethod (Method method, ClassBase implementor)
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{
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if (implementor != null && implementor.QualifiedName != this.QualifiedName && method.IsStatic)
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return true;
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string mname = method.Name;
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return ((method.IsSetter || (method.IsGetter && mname.StartsWith("Get"))) &&
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((props != null) && props.ContainsKey(mname.Substring(3)) ||
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(fields != null) && fields.ContainsKey(mname.Substring(3))));
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}
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public void GenMethods (GenerationInfo gen_info, Hashtable collisions, ClassBase implementor)
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{
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if (methods == null)
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return;
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foreach (Method method in methods.Values) {
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if (IgnoreMethod (method, implementor))
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continue;
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string oname = null, oprotection = null;
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if (collisions != null && collisions.Contains (method.Name)) {
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oname = method.Name;
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oprotection = method.Protection;
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method.Name = QualifiedName + "." + method.Name;
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method.Protection = "";
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}
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method.Generate (gen_info, implementor);
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if (oname != null) {
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method.Name = oname;
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method.Protection = oprotection;
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}
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}
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}
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public Method GetMethod (string name)
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{
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return (Method) methods[name];
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}
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public Property GetProperty (string name)
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{
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return (Property) props[name];
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}
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public Method GetMethodRecursively (string name)
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{
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return GetMethodRecursively (name, false);
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}
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public virtual Method GetMethodRecursively (string name, bool check_self)
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{
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Method p = null;
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if (check_self)
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p = GetMethod (name);
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if (p == null && Parent != null)
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p = Parent.GetMethodRecursively (name, true);
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if (check_self && p == null) {
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foreach (string iface in interfaces) {
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ClassBase igen = SymbolTable.Table.GetClassGen (iface);
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if (igen == null)
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continue;
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p = igen.GetMethodRecursively (name, true);
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if (p != null)
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break;
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}
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}
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return p;
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}
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public virtual Property GetPropertyRecursively (string name)
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{
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ClassBase klass = this;
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Property p = null;
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while (klass != null && p == null) {
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p = (Property) klass.GetProperty (name);
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klass = klass.Parent;
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}
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return p;
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}
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public bool Implements (string iface)
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{
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if (interfaces.Contains (iface))
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return true;
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else if (Parent != null)
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return Parent.Implements (iface);
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else
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return false;
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}
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public ArrayList Ctors { get { return ctors; } }
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bool HasStaticCtor (string name)
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{
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if (Parent != null && Parent.HasStaticCtor (name))
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return true;
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foreach (Ctor ctor in Ctors)
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if (ctor.StaticName == name)
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return true;
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return false;
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}
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private void InitializeCtors ()
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{
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if (ctors_initted)
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return;
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if (Parent != null)
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Parent.InitializeCtors ();
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ArrayList valid_ctors = new ArrayList();
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clash_map = new Hashtable();
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foreach (Ctor ctor in ctors) {
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if (clash_map.Contains (ctor.Signature.Types)) {
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Ctor clash = clash_map [ctor.Signature.Types] as Ctor;
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Ctor alter = ctor.Preferred ? clash : ctor;
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alter.IsStatic = true;
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if (Parent != null && Parent.HasStaticCtor (alter.StaticName))
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alter.Modifiers = "new ";
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} else
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clash_map [ctor.Signature.Types] = ctor;
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valid_ctors.Add (ctor);
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}
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ctors = valid_ctors;
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ctors_initted = true;
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}
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protected virtual void GenCtors (GenerationInfo gen_info)
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{
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InitializeCtors ();
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foreach (Ctor ctor in ctors)
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ctor.Generate (gen_info);
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}
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public virtual void Finish (StreamWriter sw, string indent)
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{
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}
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public virtual void Prepare (StreamWriter sw, string indent)
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{
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}
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}
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}
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