public void OnPreGenerateDelegate(DelegateBridgeBindingInfo bindingInfo)
{
var typeDB = _runtime.GetTypeDB();
var method = bindingInfo.reflect;
foreach (var delegateType in bindingInfo.types)
{
typeDB.AddDelegate(delegateType, method);
}
}
public DelegateCodeGen(CodeGenerator cg, DelegateBridgeBindingInfo delegateBindingInfo, int index)
{
this.cg = cg;
this.delegateBindingInfo = delegateBindingInfo;
var inputParameters = GetInputParameters(delegateBindingInfo.parameters);
var nargs = inputParameters.Length;
var retName = this.cg.bindingManager.GetUniqueName(delegateBindingInfo.parameters, "ret");
var firstArgument = typeof(ScriptDelegate) + " fn";
var returnTypeName = this.cg.bindingManager.GetCSTypeFullName(delegateBindingInfo.returnType);
var delegateName = CodeGenerator.NameOfDelegates + index;
var arglist = this.cg.bindingManager.GetCSArglistDecl(delegateBindingInfo.parameters);
foreach (var target in delegateBindingInfo.types)
{
this.cg.cs.AppendLine("[{0}(typeof({1}))]",
this.cg.bindingManager.GetCSTypeFullName(typeof(JSDelegateAttribute)),
this.cg.bindingManager.GetCSTypeFullName(target));
this.cg.bindingManager.Info("emitting delegate decl: {0}", target);
}
if (!string.IsNullOrEmpty(arglist))
{
arglist = ", " + arglist;
}
this.cg.cs.AppendLine($"public static unsafe {returnTypeName} {delegateName}({firstArgument}{arglist})");
this.cg.cs.AppendLine("{");
this.cg.cs.AddTabLevel();
this.cg.cs.AppendLine("var ctx = fn.ctx;");
if (nargs > 0)
{
var getContext = false;
this.cg.cs.AppendLine("var argv = stackalloc JSValue[{0}];", nargs);
for (var i = 0; i < nargs; i++)
{
var parameter = inputParameters[i];
if (parameter.ParameterType.IsByRef)
{
if (parameter.IsOut)
{
var pusher = "JSApi.JS_NewObject(ctx)";
this.cg.cs.AppendLine("argv[{0}] = {1};", i, pusher);
CheckParameterException(i);
}
else
{
var pusher = "JSApi.JS_NewObject(ctx)";
var value_pusher = this.cg.AppendValuePusher(parameter.ParameterType, parameter.Name);
this.cg.cs.AppendLine("argv[{0}] = {1};", i, pusher);
CheckParameterException(i);
if (!getContext)
{
getContext = true;
cg.cs.AppendLine("var context = ScriptEngine.GetContext(ctx);");
}
cg.cs.AppendLine("JSApi.JS_SetProperty(ctx, argv[{0}], context.GetAtom(\"value\"), {1});", i, value_pusher);
}
}
else
{
var pusher = this.cg.AppendValuePusher(parameter.ParameterType, parameter.Name);
this.cg.cs.AppendLine("argv[{0}] = {1};", i, pusher);
CheckParameterException(i);
}
}
this.cg.cs.AppendLine("var rval = fn.Invoke(ctx, {0}, argv);", nargs);
}
else
{
this.cg.cs.AppendLine("var rval = fn.Invoke(ctx);");
}
CheckReturnValue(nargs);
_WriteBackParameters(nargs, inputParameters);
if (delegateBindingInfo.returnType != typeof(void))
{
this.cg.cs.AppendLine($"{this.cg.bindingManager.GetCSTypeFullName(delegateBindingInfo.returnType)} {retName};");
var getter = this.cg.bindingManager.GetScriptObjectGetter(delegateBindingInfo.returnType, "ctx", "rval", retName);
this.cg.cs.AppendLine("var succ = {0};", getter);
FreeRVal();
FreeArgs(nargs);
this.cg.cs.AppendLine("if (succ)");
this.cg.cs.AppendLine("{");
this.cg.cs.AddTabLevel();
this.cg.cs.AppendLine($"return {retName};");
this.cg.cs.DecTabLevel();
this.cg.cs.AppendLine("}");
this.cg.cs.AppendLine("else");
this.cg.cs.AppendLine("{");
this.cg.cs.AddTabLevel();
this.cg.cs.AppendLine($"throw new Exception(\"js exception caught\");");
this.cg.cs.DecTabLevel();
this.cg.cs.AppendLine("}");
}
else
{
FreeRVal();
FreeArgs(nargs);
}
}
public void OnPostGenerateDelegate(DelegateBridgeBindingInfo bindingInfo)
{
}
public virtual void OnPostGenerateDelegate(BindingManager bindingManager, DelegateBridgeBindingInfo bindingInfo)
{
}