private Expression /*!*/ MarshalArgument(MetaObjectBuilder /*!*/ metaBuilder, DynamicMetaObject /*!*/ arg, ArgType parameterType)
{
object value = arg.Value;
if (value == null)
{
metaBuilder.AddRestriction(Ast.Equal(arg.Expression, AstUtils.Constant(null)));
}
else
{
metaBuilder.AddTypeRestriction(value.GetType(), arg.Expression);
}
switch (parameterType)
{
case ArgType.Buffer:
if (value == null)
{
return(AstUtils.Constant(null, typeof(byte[])));
}
if (value is int && (int)value == 0)
{
metaBuilder.AddRestriction(Ast.Equal(AstUtils.Convert(arg.Expression, typeof(int)), AstUtils.Constant(0)));
return(AstUtils.Constant(null, typeof(byte[])));
}
if (value.GetType() == typeof(MutableString))
{
return(Methods.GetMutableStringBytes.OpCall(
AstUtils.Convert(arg.Expression, typeof(MutableString))
));
}
return(Methods.GetMutableStringBytes.OpCall(
AstUtils.LightDynamic(ConvertToStrAction.Make(_context), typeof(MutableString), arg.Expression)
));
case ArgType.Int32:
if (value is int)
{
return(AstUtils.Convert(arg.Expression, typeof(int)));
}
return(Ast.Convert(
Ast.Call(
AstUtils.LightDynamic(ConvertToIntAction.Make(_context), typeof(IntegerValue), arg.Expression),
Methods.IntegerValue_ToUInt32Unchecked
),
typeof(int)
));
}
throw Assert.Unreachable;
}
public static IntegerValue CastToInteger(ConversionStorage <IntegerValue> /*!*/ integerConversion, object value)
{
var site = integerConversion.GetSite(ConvertToIntAction.Make(integerConversion.Context));
return(site.Target(site, value));
}