private DynamicMetaObject DynamicTryGetMember(string name, Expression fallback, Func <Expression, Expression> resultOp)
{
var tmp = Expression.Parameter(typeof(object));
return(new DynamicMetaObject(
Expression.Block(
new[] { tmp },
Expression.Condition(
Expression.NotEqual(
Expression.Assign(
tmp,
Expression.Invoke(
Expression.Constant(new Func <object, SymbolId, object>(AttributesAdapter.TryGetMember)),
Expression,
Expression.Constant(SymbolTable.StringToId(name))
)
),
Expression.Constant(_getFailed)
),
ExpressionUtils.Convert(resultOp(tmp), typeof(object)),
ExpressionUtils.Convert(fallback, typeof(object))
)
),
GetRestrictions()
));
}
private DynamicMetaObject DynamicTryGetMember(string name, Expression fallback, Func <Expression, Expression> resultOp)
{
var tmp = Expression.Parameter(typeof(object));
return(new DynamicMetaObject(
Expression.Block(
new[] { tmp },
Expression.Condition(
Expression.NotEqual(
Expression.Assign(
tmp,
Expression.Invoke(
Expression.Constant(_getMember),
Expression,
Expression.Constant(name)
)
),
Expression.Constant(StringDictionaryExpando._getFailed)
),
ExpressionUtils.Convert(resultOp(tmp), typeof(object)),
ExpressionUtils.Convert(fallback, typeof(object))
)
),
GetRestrictions()
));
}
public void DefaultConfigIsDetectChanges()
{
Expression <Func <LambadaTest, LambadaTest> > expression = (input) => new LambadaTest();
var a = new { };
ExpressionUtils.Convert(expression, a.GetType());
}
public override DynamicMetaObject BindSetMember(SetMemberBinder binder, DynamicMetaObject value)
{
IScopeVariable variable = Value.GetScopeVariable(binder.Name, binder.IgnoreCase);
var objExpression = ExpressionUtils.Convert(value.Expression, typeof(object));
return(new DynamicMetaObject(
Expression.Block(
Expression.Call(
Variable(variable),
variable.GetType().GetMethod("SetValue"),
objExpression
),
objExpression
),
BindingRestrictions.GetInstanceRestriction(Expression, Value)
));
}
private DynamicMetaObject DynamicTryGetValue(string name, bool ignoreCase, Expression fallback, Func <Expression, Expression> resultOp)
{
IScopeVariable variable = Value.GetScopeVariable(name, ignoreCase);
var tmp = Expression.Parameter(typeof(object));
return(new DynamicMetaObject(
Expression.Block(
new[] { tmp },
Expression.Condition(
Expression.Call(
Variable(variable),
variable.GetType().GetMethod("TryGetValue"),
tmp
),
ExpressionUtils.Convert(resultOp(tmp), typeof(object)),
ExpressionUtils.Convert(fallback, typeof(object))
)
),
BindingRestrictions.GetInstanceRestriction(Expression, Value)
));
}
