no more submodule

GtkSharp/Source/Tools/GapiCodegen/VirtualMethod.cs

@@ -0,0 +1,157 @@
+// GtkSharp.Generation.VirtualMethod.cs - The VirtualMethod Generatable.
+//
+// Author: Mike Kestner <mkestner@novell.com>
+//
+// Copyright (c) 2003-2004 Novell, Inc.
+// Copyright (c) 2009 Christian Hoff
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of version 2 of the GNU General Public
+// License as published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public
+// License along with this program; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA 02111-1307, USA.
+
+
+namespace GtkSharp.Generation {
+
+	using System;
+	using System.Collections;
+	using System.IO;
+	using System.Xml;
+
+	public abstract class VirtualMethod : MethodBase  {
+		protected ReturnValue retval;
+		protected ManagedCallString call;
+		
+		protected string modifiers = "";
+
+		public VirtualMethod (XmlElement elem, ObjectBase container_type) : base (elem, container_type)
+		{
+			if (container_type.ParserVersion == 1) {
+				// The old pre 2.14 parser didn't drop the 1st parameter in all <signal> and <virtual_method> elements
+				parms = new Parameters (elem ["parameters"], true);
+			}
+			retval = new ReturnValue (elem ["return-type"]);
+		}
+	
+		protected abstract string CallString {
+			get;
+		}
+
+		VMSignature signature;
+		protected new VMSignature Signature {
+			get {
+				if (signature == null)
+					signature = new VMSignature (parms);
+
+				return signature;
+			}
+		}
+
+		/* Creates a callback method which invokes the corresponding virtual method
+		* @implementor is the class that implements the virtual method(e.g. the class that derives from an interface) or NULL if containing and declaring type are equal
+		*/
+		public void GenerateCallback (StreamWriter sw, ClassBase implementor)
+		{
+			LogWriter log = new LogWriter ();
+			log.Type = container_type.QualifiedName;
+			if (!Validate (log))
+				return;
+
+			string native_signature = "";
+			if (!IsStatic) {
+				native_signature += "IntPtr inst";
+				if (parms.Count > 0)
+					native_signature += ", ";
+			}
+			if (parms.Count > 0)
+				native_signature += parms.ImportSignature;
+
+			sw.WriteLine ("\t\t[UnmanagedFunctionPointer (CallingConvention.Cdecl)]");
+			sw.WriteLine ("\t\tdelegate {0} {1}NativeDelegate ({2});", retval.ToNativeType, this.Name, native_signature);
+			sw.WriteLine ();
+			sw.WriteLine ("\t\tstatic {0} {1}_cb ({2})", retval.ToNativeType, this.Name, native_signature);
+			sw.WriteLine ("\t\t{");
+			string unconditional = call.Unconditional ("\t\t\t");
+			if (unconditional.Length > 0)
+				sw.WriteLine (unconditional);
+			sw.WriteLine ("\t\t\ttry {");
+
+			if (!this.IsStatic) {
+				string type;
+				if (implementor != null)
+					type = implementor.QualifiedName;
+				else if (this.container_type is InterfaceGen)
+					// We are in an interface/adaptor, invoke the method in the implementor class
+					type = (this.container_type as InterfaceGen).ImplementorName;
+				else
+					type = this.container_type.Name;
+
+				sw.WriteLine ("\t\t\t\t{0} __obj = GLib.Object.GetObject (inst, false) as {0};", type);
+			}
+
+			string indent = "\t\t\t\t";
+			if (!retval.IsVoid)
+				sw.WriteLine (indent + retval.CSType + " __result;");
+			sw.Write (call.Setup (indent));
+			sw.Write (indent);
+			if (!retval.IsVoid)
+				sw.Write ("__result = ");
+			if (!this.IsStatic)
+				sw.Write ("__obj.");
+			sw.WriteLine (this.CallString + ";");
+			sw.Write (call.Finish (indent));
+			if (!retval.IsVoid)
+				sw.WriteLine ("\t\t\t\treturn " + retval.ToNative ("__result") + ";");
+
+			bool fatal = parms.HasOutParam || !retval.IsVoid;
+			sw.WriteLine ("\t\t\t} catch (Exception e) {");
+			sw.WriteLine ("\t\t\t\tGLib.ExceptionManager.RaiseUnhandledException (e, " + (fatal ? "true" : "false") + ");");
+			if (fatal) {
+				sw.WriteLine ("\t\t\t\t// NOTREACHED: above call does not return.");
+				sw.WriteLine ("\t\t\t\tthrow;");
+			}
+
+			if (call.HasDisposeParam) {
+				sw.WriteLine ("\t\t\t} finally {");
+				sw.Write (call.DisposeParams (indent));
+			}
+			sw.WriteLine ("\t\t\t}");
+			sw.WriteLine ("\t\t}");
+			sw.WriteLine ();
+		}
+
+		enum ValidState {
+			Unvalidated,
+			Invalid,
+			Valid
+		}
+
+		ValidState vstate = ValidState.Unvalidated;
+
+		public override bool Validate (LogWriter log)
+		{
+			if (vstate != ValidState.Unvalidated)
+				return vstate == ValidState.Valid;
+
+			vstate = ValidState.Valid;
+			log.Member = Name;
+			if (!parms.Validate (log) || !retval.Validate (log)) {
+				vstate = ValidState.Invalid;
+				return false;
+			}
+
+			call = new ManagedCallString (parms);
+			return true;
+		}
+	}
+}
+