public DynamicMethod(DynamicType type, MethodInfo methodInfo)
{
_type = type;
_methodInfo = methodInfo;
_methodParameters = _methodInfo.GetParameters();
_isVarargMethod = Values.IsVarargParameter(_methodParameters);
var argIndex = 0;
for (var i = 0; i < _methodParameters.Length; i++)
{
var p = _methodParameters[i];
if (!Values.IsContextualType(p.ParameterType))
{
argIndex++;
}
}
_inputParameters = new ParameterInfo[argIndex];
argIndex = 0;
for (var i = 0; i < _methodParameters.Length; i++)
{
var p = _methodParameters[i];
if (!Values.IsContextualType(p.ParameterType))
{
_inputParameters[argIndex++] = p;
}
}
}
public override JSValue Invoke(JSContext ctx, JSValue this_obj, int argc, JSValue[] argv)
{
if (!_methodInfo.IsPublic && !_type.privateAccess)
{
return(JSApi.JS_ThrowInternalError(ctx, "method is inaccessible due to its protection level"));
}
object self = null;
if (!_methodInfo.IsStatic)
{
if (!Values.js_get_var(ctx, this_obj, _type.type, out self) || !_type.CheckThis(self))
{
throw new ThisBoundException();
}
}
var nArgs = _methodParameters.Length;
var args = new object[nArgs];
var vIndex = 0;
var bBackValues = false;
for (var i = 0; i < nArgs; i++)
{
var parameterInfo = _methodParameters[i];
var pType = parameterInfo.ParameterType;
if (Values.IsContextualType(pType))
{
args[i] = Values.js_get_context(ctx, pType);
}
else
{
if (_isVarargMethod && i == nArgs - 1)
{
var varArgLength = argc - nArgs + 1;
var varArgType = pType.GetElementType();
var varArgArray = Array.CreateInstance(varArgType, varArgLength);
for (var varArgIndex = 0; varArgIndex < varArgLength; varArgIndex++)
{
object varArgElement = null;
if (!Values.js_get_var(ctx, argv[vIndex++], varArgType, out varArgElement))
{
return(JSApi.JS_ThrowInternalError(ctx, $"failed to cast val vararg #{varArgIndex}"));
}
varArgArray.SetValue(varArgElement, varArgIndex);
}
args[i] = varArgArray;
}
else
{
if (pType.IsByRef)
{
bBackValues = true;
if (!parameterInfo.IsOut)
{
if (!Values.js_get_var(ctx, argv[vIndex], pType.GetElementType(), out args[i]))
{
return(JSApi.JS_ThrowInternalError(ctx, $"failed to cast val byref #{vIndex}"));
}
}
}
else
{
if (!Values.js_get_var(ctx, argv[vIndex], pType, out args[i]))
{
return(JSApi.JS_ThrowInternalError(ctx, $"failed to cast val #{vIndex}"));
}
}
vIndex++;
}
}
}
var ret = _methodInfo.Invoke(self, args);
if (bBackValues)
{
vIndex = 0;
for (var i = 0; i < nArgs; i++)
{
var parameterInfo = _methodParameters[i];
var pType = parameterInfo.ParameterType;
if (!Values.IsContextualType(pType))
{
if (_isVarargMethod && i == nArgs - 1)
{
}
else
{
if (pType.IsByRef)
{
var backValue = Values.js_push_var(ctx, args[i]);
var valueAtom = ScriptEngine.GetContext(ctx).GetAtom("value");
JSApi.JS_SetProperty(ctx, argv[vIndex], valueAtom, backValue);
}
vIndex++;
}
}
}
}
if (_type.type.IsValueType && !_methodInfo.IsStatic)
{
Values.js_rebind_var(ctx, this_obj, _type.type, self);
}
if (_methodInfo.ReturnType != typeof(void))
{
return(Values.js_push_var(ctx, ret));
}
return(JSApi.JS_UNDEFINED);
}