public GObjectVM(XmlElement elem, ObjectBase container_type)
: base(elem, container_type)
{
parms.HideData = false;
this.Protection = "protected";
class_struct_name = container_type.ClassStructName;
}
protected virtual bool CanGenerate (GenerationInfo gen_info, ObjectBase implementor)
{
if (implementor != null || this.CName.Length == 0 || CodeType == VMCodeType.None || (CodeType == VMCodeType.Glue && !gen_info.GlueEnabled))
return false;
else
return true;
}
protected override void GenerateUnmanagedInvocation (GenerationInfo gen_info, ObjectBase implementor)
{
if (!base.CanGenerate (gen_info, implementor))
GenerateChainVirtualMethod (gen_info.Writer, implementor);
else
base.GenerateUnmanagedInvocation (gen_info, implementor);
}
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"]);
}
public Signal(XmlElement elem, ObjectBase container_type)
{
this.elem = elem;
name = elem.GetAttribute ("name");
marshaled = elem.GetAttribute ("manual") == "true";
retval = new ReturnValue (elem ["return-type"]);
parms = new Parameters (elem["parameters"], container_type.ParserVersion == 1 ? true : false);
this.container_type = container_type;
}
public void Generate (GenerationInfo gen_info, ObjectBase implementor)
{
if (!CanGenerate (gen_info, implementor))
throw new NotSupportedException (String.Format ("Cannot generate virtual method {0}.{1}. Make sure a writable glue path was provided to the generator.", container_type.Name, this.CallString));
GenerateOverride (gen_info, implementor);
GenerateCallback (gen_info.Writer, implementor);
if (!IsStatic)
GenerateUnmanagedInvocation (gen_info, implementor);
}
protected override void GenerateOverride (GenerationInfo gen_info, ObjectBase implementor)
{
StreamWriter sw = gen_info.Writer;
if (!base.CanGenerate (gen_info, implementor)) {
GenerateOverrideBody (sw);
sw.WriteLine ("\t\t\tOverrideVirtualMethod (gtype, \"{0}\", callback);", signal_name);
sw.WriteLine ("\t\t}");
} else
base.GenerateOverride (gen_info, implementor);
}
private void GenerateChainVirtualMethod (StreamWriter sw, ObjectBase implementor)
{
GenerateMethodBody (sw, implementor);
if (retval.IsVoid)
sw.WriteLine ("\t\t\tGst.GLib.Value ret = Gst.GLib.Value.Empty;");
else
sw.WriteLine ("\t\t\tGst.GLib.Value ret = new Gst.GLib.Value (" + ReturnGType + ");");
sw.WriteLine ("\t\t\tGst.GLib.ValueArray inst_and_params = new Gst.GLib.ValueArray (" + (parms.Count + 1) + ");");
sw.WriteLine ("\t\t\tGst.GLib.Value[] vals = new Gst.GLib.Value [" + (parms.Count + 1) + "];");
sw.WriteLine ("\t\t\tvals [0] = new Gst.GLib.Value (this);");
sw.WriteLine ("\t\t\tinst_and_params.Append (vals [0]);");
string cleanup = "";
for (int i = 0; i < parms.Count; i++) {
Parameter p = parms [i];
if (p.PassAs != "") {
if (SymbolTable.Table.IsBoxed (p.CType)) {
if (p.PassAs == "ref")
sw.WriteLine ("\t\t\tvals [" + (i + 1) + "] = new Gst.GLib.Value (" + p.Name + ");");
else
sw.WriteLine ("\t\t\tvals [" + (i + 1) + "] = new Gst.GLib.Value ((Gst.GLib.GType)typeof (" + p.CSType + "));");
cleanup += "\t\t\t" + p.Name + " = (" + p.CSType + ") vals [" + i + "];\n";
} else {
if (p.PassAs == "ref")
sw.WriteLine ("\t\t\tIntPtr " + p.Name + "_ptr = Gst.GLib.Marshaller.StructureToPtrAlloc (" + p.Generatable.CallByName (p.Name) + ");");
else
sw.WriteLine ("\t\t\tIntPtr " + p.Name + "_ptr = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (" + p.MarshalType + ")));");
sw.WriteLine ("\t\t\tvals [" + (i + 1) + "] = new Gst.GLib.Value (" + p.Name + "_ptr);");
cleanup += "\t\t\t" + p.Name + " = " + p.FromNative ("(" + p.MarshalType + ") Marshal.PtrToStructure (" + p.Name + "_ptr, typeof (" + p.MarshalType + "))") + ";\n";
cleanup += "\t\t\tMarshal.FreeHGlobal (" + p.Name + "_ptr);\n";
}
} else if (p.IsLength && i > 0 && parms [i - 1].IsString)
sw.WriteLine ("\t\t\tvals [" + (i + 1) + "] = new Gst.GLib.Value (System.Text.Encoding.UTF8.GetByteCount (" + parms [i-1].Name + "));");
else
sw.WriteLine ("\t\t\tvals [" + (i + 1) + "] = new Gst.GLib.Value (" + p.Name + ");");
sw.WriteLine ("\t\t\tinst_and_params.Append (vals [" + (i + 1) + "]);");
}
sw.WriteLine ("\t\t\tg_signal_chain_from_overridden (inst_and_params.ArrayPtr, ref ret);");
if (cleanup != "")
sw.WriteLine (cleanup);
sw.WriteLine ("\t\t\tforeach (Gst.GLib.Value v in vals)");
sw.WriteLine ("\t\t\t\tv.Dispose ();");
if (!retval.IsVoid) {
IGeneratable igen = SymbolTable.Table [retval.CType];
sw.WriteLine ("\t\t\t" + retval.CSType + " result = (" + (igen is EnumGen ? retval.CSType + ") (Enum" : retval.CSType) + ") ret;");
sw.WriteLine ("\t\t\tret.Dispose ();");
sw.WriteLine ("\t\t\treturn result;");
}
sw.WriteLine ("\t\t}\n");
}
public void GenSignals(GenerationInfo gen_info, ObjectBase implementor)
{
foreach (Signal sig in sigs.Values)
sig.Generate (gen_info, implementor);
}
private void GenerateChainVirtualMethod(StreamWriter sw, ObjectBase implementor)
{
GenerateMethodBody(sw, implementor);
if (retval.IsVoid)
{
sw.WriteLine("\t\t\tGLib.Value ret = GLib.Value.Empty;");
}
else
{
sw.WriteLine("\t\t\tGLib.Value ret = new GLib.Value (" + ReturnGType + ");");
}
sw.WriteLine("\t\t\tGLib.ValueArray inst_and_params = new GLib.ValueArray (" + (parms.Count + 1) + ");");
sw.WriteLine("\t\t\tGLib.Value[] vals = new GLib.Value [" + (parms.Count + 1) + "];");
sw.WriteLine("\t\t\tvals [0] = new GLib.Value (this);");
sw.WriteLine("\t\t\tinst_and_params.Append (vals [0]);");
string cleanup = "";
for (int i = 0; i < parms.Count; i++)
{
Parameter p = parms [i];
if (p.PassAs != "")
{
if (SymbolTable.Table.IsBoxed(p.CType))
{
if (p.PassAs == "ref")
{
sw.WriteLine("\t\t\tvals [" + (i + 1) + "] = new GLib.Value (" + p.Name + ");");
}
else
{
sw.WriteLine("\t\t\tvals [" + (i + 1) + "] = new GLib.Value ((GLib.GType)typeof (" + p.CSType + "));");
}
cleanup += "\t\t\t" + p.Name + " = (" + p.CSType + ") vals [" + i + "];\n";
}
else
{
if (p.PassAs == "ref")
{
sw.WriteLine("\t\t\tIntPtr " + p.Name + "_ptr = GLib.Marshaller.StructureToPtrAlloc (" + p.Generatable.CallByName(p.Name) + ");");
}
else
{
sw.WriteLine("\t\t\tIntPtr " + p.Name + "_ptr = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (" + p.MarshalType + ")));");
}
sw.WriteLine("\t\t\tvals [" + (i + 1) + "] = new GLib.Value (" + p.Name + "_ptr);");
cleanup += "\t\t\t" + p.Name + " = " + p.FromNative("(" + p.MarshalType + ") Marshal.PtrToStructure (" + p.Name + "_ptr, typeof (" + p.MarshalType + "))") + ";\n";
cleanup += "\t\t\tMarshal.FreeHGlobal (" + p.Name + "_ptr);\n";
}
}
else if (p.IsLength && i > 0 && parms [i - 1].IsString)
{
sw.WriteLine("\t\t\tvals [" + (i + 1) + "] = new GLib.Value (System.Text.Encoding.UTF8.GetByteCount (" + parms [i - 1].Name + "));");
}
else
{
sw.WriteLine("\t\t\tvals [" + (i + 1) + "] = new GLib.Value (" + p.Name + ");");
}
sw.WriteLine("\t\t\tinst_and_params.Append (vals [" + (i + 1) + "]);");
}
sw.WriteLine("\t\t\tg_signal_chain_from_overridden (inst_and_params.ArrayPtr, ref ret);");
if (cleanup != "")
{
sw.WriteLine(cleanup);
}
sw.WriteLine("\t\t\tforeach (GLib.Value v in vals)");
sw.WriteLine("\t\t\t\tv.Dispose ();");
if (!retval.IsVoid)
{
IGeneratable igen = SymbolTable.Table [retval.CType];
sw.WriteLine("\t\t\t" + retval.CSType + " result = (" + (igen is EnumGen ? retval.CSType + ") (Enum" : retval.CSType) + ") ret;");
sw.WriteLine("\t\t\tret.Dispose ();");
sw.WriteLine("\t\t\treturn result;");
}
sw.WriteLine("\t\t}\n");
}
protected virtual void GenerateUnmanagedInvocation(GenerationInfo gen_info, ObjectBase implementor)
{
if (CodeType == VMCodeType.Glue)
GenerateUnmanagedInvocation_glue (gen_info);
else
GenerateUnmanagedInvocation_managed (gen_info);
}
protected virtual void GenerateOverride(GenerationInfo gen_info, ObjectBase implementor)
{
if (CodeType == VMCodeType.Glue)
GenerateOverride_glue (gen_info);
else
GenerateOverride_managed (gen_info.Writer);
}
private bool NeedNew(ObjectBase implementor)
{
return elem.HasAttribute ("new_flag") ||
(container_type != null && container_type.GetSignalRecursively (Name) != null) ||
(implementor != null && implementor.GetSignalRecursively (Name) != null);
}
public void Generate(GenerationInfo gen_info, ObjectBase implementor)
{
StreamWriter sw = gen_info.Writer;
if (implementor == null)
GenEventHandler (gen_info);
GenEvent (sw, implementor, "this");
Statistics.SignalCount++;
}
protected override bool CanGenerate(GenerationInfo gen_info, ObjectBase implementor)
{
return(true);
}
protected override bool CanGenerate (GenerationInfo gen_info, ObjectBase implementor)
{
return true;
}
public DefaultSignalHandler (XmlElement elem, ObjectBase container_type) : base (elem, container_type)
{
signal_name = elem.GetAttribute ("cname");
}
public GObjectVM(XmlElement elem, ObjectBase container_type) : base(elem, container_type)
{
parms.HideData = false;
this.Protection = "protected";
class_struct_name = container_type.ClassStructName;
}
public ClassField(XmlElement elem, ObjectBase container_type) : base(elem, container_type)
{
this.container_type = container_type;
}
public InterfaceVM(XmlElement elem, Method target, ObjectBase container_type) : base(elem, container_type)
{
this.target = target;
parms.HideData = true;
this.Protection = "public";
}
public void GenVirtualMethods(GenerationInfo gen_info, ObjectBase implementor)
{
foreach (GObjectVM vm in virtual_methods)
vm.Generate (gen_info, implementor);
}
private bool NeedNew(ObjectBase implementor)
{
return(elem.HasAttribute("new_flag") ||
(container_type != null && container_type.GetSignalRecursively(Name) != null) ||
(implementor != null && implementor.GetSignalRecursively(Name) != null));
}
public void GenEvent (StreamWriter sw, ObjectBase implementor, string target)
{
string args_type = IsEventHandler ? "" : ", typeof (" + EventArgsQualifiedName + ")";
if (Marshaled) {
GenCallback (sw);
args_type = ", new " + DelegateName + "(" + CallbackName + ")";
}
sw.WriteLine("\t\t[GLib.Signal("+ CName + ")]");
sw.Write("\t\tpublic ");
if (NeedNew (implementor))
sw.Write("new ");
sw.WriteLine("event " + EventHandlerQualifiedName + " " + Name + " {");
sw.WriteLine("\t\t\tadd {");
sw.WriteLine("\t\t\t\t{0}.AddSignalHandler ({1}, value{2});", target, CName, args_type);
sw.WriteLine("\t\t\t}");
sw.WriteLine("\t\t\tremove {");
sw.WriteLine("\t\t\t\t{0}.RemoveSignalHandler ({1}, value);", target, CName);
sw.WriteLine("\t\t\t}");
sw.WriteLine("\t\t}");
sw.WriteLine();
}
public void GenEvent(StreamWriter sw, ObjectBase implementor, string target)
{
string args_type = IsEventHandler ? "" : ", typeof (" + EventArgsQualifiedName + ")";
if (Marshaled) {
GenCallback (sw);
args_type = ", new " + DelegateName + "(" + CallbackName + ")";
}
sw.WriteLine("\t\t[GLib.Signal("+ CName + ")]");
sw.Write("\t\tpublic ");
if (NeedNew (implementor))
sw.Write("new ");
sw.WriteLine("event " + EventHandlerQualifiedName + " " + Name + " {");
sw.WriteLine("\t\t\tadd {");
sw.WriteLine("\t\t\t\tGLib.Signal sig = GLib.Signal.Lookup (" + target + ", " + CName + args_type + ");");
sw.WriteLine("\t\t\t\tsig.AddDelegate (value);");
sw.WriteLine("\t\t\t}");
sw.WriteLine("\t\t\tremove {");
sw.WriteLine("\t\t\t\tGLib.Signal sig = GLib.Signal.Lookup (" + target + ", " + CName + args_type + ");");
sw.WriteLine("\t\t\t\tsig.RemoveDelegate (value);");
sw.WriteLine("\t\t\t}");
sw.WriteLine("\t\t}");
sw.WriteLine();
}
public ClassField (XmlElement elem, ObjectBase container_type) : base (elem, container_type) {
this.container_type = container_type;
}
public DefaultSignalHandler(XmlElement elem, ObjectBase container_type) : base(elem, container_type)
{
signal_name = elem.GetAttribute("cname");
}
public InterfaceVM (XmlElement elem, Method target, ObjectBase container_type) : base (elem, container_type)
{
this.target = target;
parms.HideData = true;
this.Protection = "public";
}
