GtkSharp/generator/ObjectGen.cs

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// GtkSharp.Generation.ObjectGen.cs - The Object Generatable.
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// (c) 2001 Mike Kestner
namespace GtkSharp.Generation {
using System;
using System.Collections;
using System.IO;
using System.Xml;
public class ObjectGen : StructBase, IGeneratable {
public ObjectGen (String ns, XmlElement elem) : base (ns, elem) {}
public String MarshalType {
get
{
return "IntPtr";
}
}
public String CallByName (String var_name)
{
return var_name + ".Handle";
}
public String FromNative(String var)
{
return "(" + QualifiedName + ") GLib.Object.GetObject(" + var + ")";
}
public void Generate (SymbolTable table)
{
if (!Directory.Exists("..\\" + ns.ToLower() + "\\generated")) {
Directory.CreateDirectory("..\\"+ns.ToLower()+"\\generated");
}
String filename = "..\\" + ns.ToLower() + "\\generated\\" + Name + ".cs";
FileStream stream = new FileStream (filename, FileMode.Create, FileAccess.Write);
StreamWriter sw = new StreamWriter (stream);
sw.WriteLine ("// Generated File. Do not modify.");
sw.WriteLine ("// <c> 2001-2002 Mike Kestner");
sw.WriteLine ();
sw.WriteLine ("namespace " + ns + " {");
sw.WriteLine ();
sw.WriteLine ("\tusing System;");
sw.WriteLine ("\tusing System.Collections;");
sw.WriteLine ("\tusing System.Runtime.InteropServices;");
sw.WriteLine ();
String parent = elem.GetAttribute("parent");
String cs_parent = table.GetCSType(parent);
sw.Write ("\tpublic class " + Name);
if (cs_parent == "") {
sw.WriteLine (" {");
Console.WriteLine ("Object " + Name + " Unknown parent " + parent);
} else {
sw.WriteLine (" : " + cs_parent + " {");
}
sw.WriteLine ();
sw.WriteLine("\t\tpublic " + Name + "(IntPtr raw) : base(raw) {}");
sw.WriteLine();
Hashtable clash_map = new Hashtable();
Hashtable props = new Hashtable();
Hashtable sigs = new Hashtable();
ArrayList methods = new ArrayList();
bool first_sig = true;
foreach (XmlNode node in elem.ChildNodes) {
XmlElement member = (XmlElement) node;
switch (node.Name) {
case "field":
//if (!GenField(member, table, sw)) {
// Console.WriteLine("in object " + CName);
//}
break;
case "callback":
break;
case "constructor":
if (!GenCtor(member, table, sw, clash_map)) {
Console.WriteLine("in object " + CName);
}
break;
case "method":
methods.Add(member);
break;
case "property":
String pname;
if (!GenProperty(member, table, sw, out pname)) {
Console.WriteLine("in object " + CName);
}
props.Add(pname, pname);
break;
case "signal":
if (first_sig) {
first_sig = false;
sw.WriteLine("\t\tprivate Hashtable Signals = new Hashtable();");
}
String sname;
if (!GenSignal(member, table, sw, out sname)) {
Console.WriteLine("in object " + CName);
}
sigs.Add(sname, sname);
break;
default:
Console.WriteLine ("Unexpected node");
break;
}
}
if (!clash_map.ContainsKey("")) {
sw.WriteLine("\t\tpublic " + Name + "() : base(){}");
sw.WriteLine();
}
foreach (XmlElement member in methods) {
String mname = member.GetAttribute("name");
if ((mname.StartsWith("Set") || mname.StartsWith("Get")) &&
props.ContainsKey(mname.Substring(3))) {
continue;
} else if (sigs.ContainsKey(mname)) {
member.SetAttribute("name", "Emit" + mname);
}
if (!GenMethod(member, table, sw)) {
Console.WriteLine("in object " + CName);
}
}
sw.WriteLine ("\t}");
sw.WriteLine ();
sw.WriteLine ("}");
sw.Flush();
sw.Close();
}
public bool GenProperty (XmlElement prop, SymbolTable table, StreamWriter sw, out String name)
{
String c_type = prop.GetAttribute("type");
char[] ast = {'*'};
c_type = c_type.TrimEnd(ast);
String cs_type = table.GetCSType(c_type);
String m_type;
XmlElement parent = (XmlElement) prop.ParentNode;
name = prop.GetAttribute("name");
if (name == parent.GetAttribute("name")) {
name += "Prop";
}
if (table.IsObject(c_type)) {
m_type = "GLib.Object";
} else if (table.IsBoxed(c_type)) {
m_type = "GtkSharp.Boxed";
} else if (table.IsInterface(c_type)) {
// FIXME: Handle interface props properly.
Console.Write("Interface property detected ");
return true;
} else {
m_type = table.GetMarshalType(c_type);
}
if ((cs_type == "") || (m_type == "")) {
Console.Write("Property has unknown Type {0} ", c_type);
return false;
}
if (prop.HasAttribute("construct-only") && !prop.HasAttribute("readable")) {
return true;
}
sw.WriteLine("\t\tpublic " + cs_type + " " + name + " {");
if (prop.HasAttribute("readable")) {
sw.WriteLine("\t\t\tget {");
sw.WriteLine("\t\t\t\t" + m_type + " val;");
sw.WriteLine("\t\t\t\tGetProperty(\"" + prop.GetAttribute("cname") + "\", out val);");
sw.Write("\t\t\t\treturn ");
if (cs_type != m_type) {
sw.Write("(" + cs_type + ") ");
}
sw.WriteLine("val;");
sw.WriteLine("\t\t\t}");
}
if (prop.HasAttribute("writeable") && !prop.HasAttribute("construct-only")) {
sw.WriteLine("\t\t\tset {");
sw.WriteLine("\t\t\t\tSetProperty(\"" + prop.GetAttribute("cname") + "\", (" + m_type + ") value);");
sw.WriteLine("\t\t\t}");
}
sw.WriteLine("\t\t}");
sw.WriteLine();
return true;
}
public bool GenSignal (XmlElement sig, SymbolTable table, StreamWriter sw, out String name)
{
String cname = "\"" + sig.GetAttribute("cname") + "\"";
name = sig.GetAttribute("name");
String marsh = SignalHandler.GetName(sig, table);
if (marsh == "") {
return false;
}
marsh = "GtkSharp." + marsh;
sw.WriteLine("\t\t/// <summary> " + name + " Event </summary>");
sw.WriteLine("\t\t/// <remarks>");
// FIXME: Generate some signal docs
sw.WriteLine("\t\t/// </remarks>");
sw.WriteLine();
sw.WriteLine("\t\tpublic event EventHandler " + name + " {");
sw.WriteLine("\t\t\tadd {");
sw.WriteLine("\t\t\t\tif (EventList[" + cname + "] == null)");
sw.Write("\t\t\t\t\tSignals[" + cname + "] = new " + marsh);
sw.WriteLine("(this, Handle, " + cname + ", value);");
sw.WriteLine("\t\t\t\tEventList.AddHandler(" + cname + ", value);");
sw.WriteLine("\t\t\t}");
sw.WriteLine("\t\t\tremove {");
sw.WriteLine("\t\t\t\tEventList.RemoveHandler(" + cname + ", value);");
sw.WriteLine("\t\t\t\tif (EventList[" + cname + "] == null)");
sw.WriteLine("\t\t\t\t\tSignals.Remove(" + cname + ");");
sw.WriteLine("\t\t\t}");
sw.WriteLine("\t\t}");
sw.WriteLine();
return true;
}
}
}