} // func IndexGetExpression
private static Expression IndexSetExpression(Lua runtime, Token tStart, Expression instance, Expression[] indexes, Expression set)
{
if (instance.Type == typeof(LuaTable))
{
if (indexes.Length == 1)
{
var arg = indexes[0];
if (LuaTable.IsIndexKey(arg.Type)) // integer access
{
return(Expression.Call(instance, Lua.TableSetValueKeyIntMethodInfo,
ConvertExpression(runtime, tStart, arg, typeof(int)),
ConvertObjectExpression(runtime, tStart, set, true),
Expression.Constant(false)
));
}
else if (arg.Type == typeof(string)) // member access
{
return(Expression.Call(instance, Lua.TableSetValueKeyStringMethodInfo,
arg,
ConvertObjectExpression(runtime, tStart, set, true),
Expression.Constant(false),
Expression.Constant(false)
));
}
else // key access
{
return(Expression.Call(instance, Lua.TableSetValueKeyObjectMethodInfo,
ConvertObjectExpression(runtime, tStart, arg, true),
ConvertObjectExpression(runtime, tStart, set, true),
Expression.Constant(false)
));
}
}
else
{
return(Expression.Call(instance, Lua.TableSetValueKeyListMethodInfo,
Expression.NewArrayInit(typeof(object), from i in indexes select ConvertObjectExpression(runtime, tStart, i, true)),
ConvertObjectExpression(runtime, tStart, set, true),
Expression.Constant(false)
));
}
}
else
{
return(SafeExpression(() => LuaEmit.SetIndex(runtime, instance, indexes, set, getExpressionFunction, getExpressionTypeFunction, true), tStart));
}
} // func IndexSetExpression
} // ctor
public override DynamicMetaObject FallbackSetIndex(DynamicMetaObject target, DynamicMetaObject[] indexes, DynamicMetaObject value, DynamicMetaObject errorSuggestion)
{
// Defer the parameters
if (!target.HasValue || indexes.Any(c => !c.HasValue))
{
DynamicMetaObject[] def = new DynamicMetaObject[indexes.Length + 1];
def[0] = target;
Array.Copy(indexes, 0, def, 1, indexes.Length);
return(Defer(def));
}
Expression expr;
if (target.Value == null)
{
if (errorSuggestion != null)
{
return(errorSuggestion);
}
expr = ThrowExpression(Properties.Resources.rsNullReference, ReturnType);
}
else
{
try
{
expr = Lua.EnsureType(LuaEmit.SetIndex(lua, target, indexes, value, mo => mo.Expression, mo => mo.LimitType, false), ReturnType);
}
catch (LuaEmitException e)
{
if (errorSuggestion != null)
{
return(errorSuggestion);
}
expr = ThrowExpression(e.Message, ReturnType);
}
}
return(new DynamicMetaObject(expr, GetMethodSignatureRestriction(target, indexes).Merge(Lua.GetSimpleRestriction(value))));
} // func FallbackSetIndex