private static void WriteRequest(Interface iface, Message r, int opcode, CSharpWriter w, CSharpWriter hlw)
{
WriteDescription(r.Element, w);
WriteArgsDescription(r.Element, w);
var parameters = new List <string>();
var argsString = opcode.ToString();
var args = new List <string>();
var before = new List <string>();
var after = new List <string>();
var ifaceArg = string.Empty;
var ret = "void";
var hlwRet = "void";
var newId = false;
var generic = false;
foreach (var arg in r.Arguments)
{
if (arg.Type == ArgType.New_id)
{
newId = true;
if (arg.Interface == null)
{
parameters.Add("wl_interface* iface");
parameters.Add("uint version");
ifaceArg = ", iface";
args.Add("iface->Name");
args.Add("version");
ret = "wl_proxy*";
hlwRet = "T*";
generic = true;
}
else
{
ifaceArg = $", {arg.Interface}.Interface";
ret = arg.Interface + '*';
hlwRet = Util.ToPascalCase(arg.Interface); // use implicit cast e.g. wl_display* => WlDisplay
}
// we just pass 0 because we don't care about the id
// I didn't find this in the documentation, but the example
// in the wayland client lib passes 0 so that's fine I guess?
args.Add("0");
}
else if (arg.Type == ArgType.String)
{
// TODO should this be in the low-level API?
before.Add($"var {arg.Name}ByteCount = System.Text.Encoding.UTF8.GetByteCount({arg.Name});");
before.Add($"var {arg.Name}Bytes = stackalloc byte[{arg.Name}ByteCount + 1];");
before.Add($"Util.StringToUtf8({arg.Name}, {arg.Name}Bytes, {arg.Name}ByteCount);");
before.Add($"{arg.Name}Bytes[{arg.Name}ByteCount] = 0;");
parameters.Add(arg.ParamType + " " + arg.Name);
args.Add(arg.Name + "Bytes");
}
else
{
if (arg.IsEnumType)
{
// enum type can be with interface qualified or not; if not qualified it's an enum of this requests interface
var type = arg.EnumType.Contains('.') ? arg.EnumType.Replace('.', '_') : $"{iface.RawName}_{arg.EnumType}";
parameters.Add($"{type} {arg.Name}");
args.Add("(int) " + arg.Name);
}
else
{
parameters.Add(arg.ParamType + " " + arg.Name);
args.Add(arg.Name);
}
}
}
var paramsString = parameters.Any() ? parameters.Aggregate((s1, s2) => s1 + ", " + s2) : string.Empty;
var paramsString2 = paramsString == string.Empty ? string.Empty : ", " + paramsString;
// replace unsafe pointers with managed variants
var hlParams = parameters.Select(p => MakeManagedParam(p));
var hlParamsString = hlParams.Any() ? hlParams.Aggregate((s1, s2) => s1 + ", " + s2) : string.Empty;
// extract names from parameters
var hlParamNames = hlParams.Select(p => p.Split(' '))
.Select(ptv => (ptv[0].Equals("IntPtr") ? "(wl_interface*) " : "") + ptv[ptv.Length - 1] + (ptv.Length == 3 ? ".Pointer" : ""));
var hlArgs = hlParamNames.Any() ? ", " + hlParamNames.Aggregate((s1, s2) => s1 + ", " + s2) : string.Empty;
var genericStr = generic ? "<T>" : "";
var genericConstrStr = generic ? " where T : unmanaged" : "";
var castStr = generic ? "(T*) " : "";
hlw.Append($"public {hlwRet} {r.NiceName}{genericStr}({hlParamsString}){genericConstrStr} => ");
hlw.Line($"{castStr}{_protocolClassName}.{iface.RawName}_{r.RawName}(Pointer{hlArgs});");
w.Line($"public static {ret} {iface.RawName}_{r.RawName}({iface.RawName}* pointer{paramsString2})");
w.OpenBlock();
var createReturn = $"return ({ret}) ptr;";
foreach (var line in before)
{
w.Line(line);
}
var methodName = "WaylandClient.wl_proxy_marshal";
var array = args.Count > 0 && !(args.Count == 1 && newId);
if (array)
{
methodName += "_array";
w.Line($"var args = stackalloc wl_argument[{args.Count()}];");
for (int i = 0; i < args.Count; i++)
{
var arg = (string)args[i];
w.Line($"args[{i}] = {arg};");
}
argsString += ", args";
argsString += ifaceArg;
}
else
{
argsString += ifaceArg;
if (newId)
{
argsString += ", null";
}
}
if (newId)
{
methodName += "_constructor";
}
var newPtr = ret != "void" ? "var ptr = " : string.Empty;
w.Line($"{newPtr}{methodName}((wl_proxy*) pointer, {argsString});");
foreach (var line in after)
{
w.Line(line);
}
if (ret != "void")
{
w.Line(createReturn);
}
w.CloseBlock();
}
private static void WriteEvents(Interface iface, CSharpWriter w, CSharpWriter hlw)
{
var events = iface.Events;
foreach (var ev in events)
{
if (GenerateComments)
{
WriteDescription(ev.Element, w);
}
w.Line(GetEventDelegate(iface, ev));
w.Line();
}
if (events.Length > 0)
{
w.Line($"internal struct {iface.RawName}_listener");
w.OpenBlock();
foreach (var ev in events)
{
w.Line($"public IntPtr {ev.RawName};");
}
w.Line();
w.Line($"public static {iface.RawName}_listener* Alloc(");
for (int i = 0; i < events.Length; i++)
{
var ev = events[i];
if (i != 0)
{
w.Line(",");
}
w.AppendIndented($"{GetDelegateName(iface, ev)} {ev.RawName}");
}
w.Line(")");
w.OpenBlock();
w.Line($"var ret = ({iface.RawName}_listener*) Marshal.AllocHGlobal(sizeof({iface.RawName}_listener));");
w.Line($"Set(ret, {string.Join(",", events.Select(ev => ev.RawName))});");
w.Line("return ret;");
w.CloseBlock();
w.Line();
w.Line($"public static void Set({iface.RawName}_listener* listener");
foreach (var ev in events)
{
w.Line(",");
w.AppendIndented($"{GetDelegateName(iface, ev)} {ev.RawName}");
}
w.Line(")");
w.OpenBlock();
foreach (var ev in events)
{
w.Append($"if ({ev.RawName} != null) ");
w.Line($"listener->{ev.RawName} = Marshal.GetFunctionPointerForDelegate<{GetDelegateName(iface, ev)}>({ev.RawName});");
}
w.CloseBlock();
w.CloseBlock(); // struct listener
w.Line();
if (GenerateComments)
{
w.DocSummary($"Set the callbacks for the given <see cref=\"{iface.RawName}\"/>.");
foreach (var ev in events)
{
WriteArgsDescription(ev.Element, w);
}
}
w.Line($"public static int {iface.RawName}_add_listener({iface.RawName}* iface, {iface.RawName}_listener* listener)");
w.OpenBlock();
w.Line("return WaylandClient.wl_proxy_add_listener((wl_proxy*) iface, listener, null);");
w.CloseBlock();
hlw.Append("public void SetListener(");
for (var i = 0; i < events.Length; i++)
{
var ev = events[i];
hlw.Line(i == 0 ? "" : ",");
hlw.AppendIndented($"{_protocolClassName}.{GetDelegateName(iface, ev)} {ev.RawName}");
}
hlw.Line(")");
hlw.OpenBlock();
foreach (var ev in events)
{
hlw.Line($"_{ev.RawName} = {ev.RawName};");
}
hlw.Line($"_listener = {_protocolClassName}.{iface.RawName}_listener.Alloc({string.Join(", ", events.Select(e => e.RawName))});");
hlw.Line($"{_protocolClassName}.{iface.RawName}_add_listener(Pointer, _listener);");
hlw.CloseBlock();
hlw.Line("public void FreeListener() { if (_listener != null) Marshal.FreeHGlobal((IntPtr) _listener); }");
}
}