mirror of
https://github.com/Ryujinx/GtkSharp.git
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2ba496479f
* generator/*.cs: Add a LogWriter class which formats warnings consistently on the console. Supports the concept of non-fatal validation warnings, since it doesn't rely on the unrolling of the validation stack to associate a warning to a given type. Main purpose was to add a non-fatal warning for missing element_type attributes on list return values, though it results in cleaner log output, and also updates some warning messages to be more helpful in how to resolve them.
149 lines
4.5 KiB
C#
149 lines
4.5 KiB
C#
// GtkSharp.Generation.VirtualMethod.cs - The VirtualMethod Generatable.
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//
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// Author: Mike Kestner <mkestner@novell.com>
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//
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// Copyright (c) 2003-2004 Novell, Inc.
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// Copyright (c) 2009 Christian Hoff
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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 VirtualMethod : MethodBase {
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protected ReturnValue retval;
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protected ManagedCallString call;
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protected string modifiers = "";
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public VirtualMethod (XmlElement elem, ObjectBase container_type) : base (elem, container_type)
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{
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if (container_type.ParserVersion == 1) {
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// The old pre 2.14 parser didn't drop the 1st parameter in all <signal> and <virtual_method> elements
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parms = new Parameters (elem ["parameters"], true);
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}
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retval = new ReturnValue (elem ["return-type"]);
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}
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protected abstract string CallString {
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get;
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}
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VMSignature signature;
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protected new VMSignature Signature {
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get {
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if (signature == null)
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signature = new VMSignature (parms);
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return signature;
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}
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}
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/* Creates a callback method which invokes the corresponding virtual method
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* @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
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*/
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public void GenerateCallback (StreamWriter sw, ClassBase implementor)
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{
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LogWriter log = new LogWriter ();
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log.Type = container_type.QualifiedName;
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if (!Validate (log))
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return;
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string native_signature = "";
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if (!IsStatic) {
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native_signature += "IntPtr inst";
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if (parms.Count > 0)
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native_signature += ", ";
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}
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if (parms.Count > 0)
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native_signature += parms.ImportSignature;
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sw.WriteLine ("\t\t[UnmanagedFunctionPointer (CallingConvention.Cdecl)]");
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sw.WriteLine ("\t\tdelegate {0} {1}NativeDelegate ({2});", retval.ToNativeType, this.Name, native_signature);
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sw.WriteLine ();
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sw.WriteLine ("\t\tstatic {0} {1}_cb ({2})", retval.ToNativeType, this.Name, native_signature);
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sw.WriteLine ("\t\t{");
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string unconditional = call.Unconditional ("\t\t\t");
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if (unconditional.Length > 0)
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sw.WriteLine (unconditional);
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sw.WriteLine ("\t\t\ttry {");
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if (!this.IsStatic) {
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string type;
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if (implementor != null)
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type = implementor.QualifiedName;
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else if (this.container_type is InterfaceGen)
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type = this.container_type.Name + "Implementor"; // We are in an interface/adaptor, invoke the method in the implementor class
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else
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type = this.container_type.Name;
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sw.WriteLine ("\t\t\t\t{0} __obj = GLib.Object.GetObject (inst, false) as {0};", type);
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}
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sw.Write (call.Setup ("\t\t\t\t"));
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sw.Write ("\t\t\t\t");
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if (!retval.IsVoid)
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sw.Write (retval.CSType + " __result = ");
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if (!this.IsStatic)
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sw.Write ("__obj.");
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sw.WriteLine (this.CallString + ";");
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sw.Write (call.Finish ("\t\t\t\t"));
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if (!retval.IsVoid)
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sw.WriteLine ("\t\t\t\treturn " + retval.ToNative ("__result") + ";");
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bool fatal = parms.HasOutParam || !retval.IsVoid;
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sw.WriteLine ("\t\t\t} catch (Exception e) {");
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sw.WriteLine ("\t\t\t\tGLib.ExceptionManager.RaiseUnhandledException (e, " + (fatal ? "true" : "false") + ");");
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if (fatal) {
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sw.WriteLine ("\t\t\t\t// NOTREACHED: above call does not return.");
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sw.WriteLine ("\t\t\t\tthrow e;");
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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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enum ValidState {
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Unvalidated,
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Invalid,
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Valid
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}
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ValidState vstate = ValidState.Unvalidated;
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public override bool Validate (LogWriter log)
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{
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if (vstate != ValidState.Unvalidated)
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return vstate == ValidState.Valid;
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vstate = ValidState.Valid;
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log.Member = Name;
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if (!parms.Validate (log) || !retval.Validate (log)) {
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vstate = ValidState.Invalid;
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return false;
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}
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call = new ManagedCallString (parms);
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return true;
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}
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}
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}
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