public void AccessNest2()
{
var propertyTokenizer = new PropertyTokenizer("User.Info.Id");
propertyTokenizer.MoveNext();
var current = propertyTokenizer.Current;
Assert.Equal("User", current.Name);
Assert.Null(current.Index);
Assert.Equal("Info.Id", current.Children);
propertyTokenizer.MoveNext();
current = propertyTokenizer.Current;
Assert.Equal("Info", current.Name);
Assert.Null(current.Index);
Assert.Equal("Id", current.Children);
propertyTokenizer.MoveNext();
current = propertyTokenizer.Current;
Assert.Equal("Id", current.Name);
Assert.Null(current.Index);
Assert.Null(current.Children);
Assert.False(propertyTokenizer.MoveNext());
}
public void IndexAccessString()
{
var propertyTokenizer = new PropertyTokenizer("Items[Name]");
var current = propertyTokenizer.Current;
Assert.Equal("Items", current.Name);
Assert.Equal("Name", current.Index);
Assert.Null(current.Children);
}
public void IndexAccess()
{
var propertyTokenizer = new PropertyTokenizer("Items[0]");
var current = propertyTokenizer.Current;
Assert.Equal("Items", current.Name);
Assert.Equal("0", current.Index);
Assert.Null(current.Children);
Assert.False(propertyTokenizer.MoveNext());
}
public bool TryCreate(Type targetType, PropertyTokenizer propertyTokenizer,
out Func <object, object> getMethodImpl)
{
var key = $"{targetType.FullName}__{propertyTokenizer.FullName}";
getMethodImpl = CacheUtil <EmitGetAccessorFactory, String, Func <object, object> >
.GetOrAdd(key, s =>
{
TryCreateImpl(targetType, propertyTokenizer, out var getMethod);
return(getMethod);
});
return(getMethodImpl != null);
}
public override object getXPath(PropertyTokenizer xPathTokenizer)
{
String completeXPath = xPathTokenizer.getCurrentPath();
return(BizAgi.PAL.XPath.XPathUtil.evaluateXPath(this, completeXPath));
}
private bool TryCreateImpl(Type targetType, PropertyTokenizer propertyTokenizer,
out Func <object, object> getMethodImpl)
{
getMethodImpl = null;
var dynamicMethod = new DynamicMethod("Get_" + Guid.NewGuid().ToString("N"), CommonType.Object,
new[] { CommonType.Object }, targetType, true);
var ilGen = dynamicMethod.GetILGenerator();
ilGen.LoadArg(0);
var propertyType = targetType;
while (propertyTokenizer.MoveNext())
{
var current = propertyTokenizer.Current;
switch (current.Mode)
{
case AccessMode.Get:
{
var propertyInfo = propertyType.GetProperty(current.Name);
if (propertyInfo == null)
{
return(false);
}
ilGen.Call(propertyInfo.GetMethod);
propertyType = propertyInfo.PropertyType;
if (propertyType.IsValueType)
{
ilGen.Box(propertyType);
}
break;
}
case AccessMode.IndexerGet:
{
var propertyInfo = propertyType.GetProperty(current.Name);
if (propertyInfo == null)
{
return(false);
}
ilGen.Call(propertyInfo.GetMethod);
MethodInfo indexerGet;
if (propertyInfo.PropertyType.IsArray)
{
indexerGet = propertyInfo.PropertyType.GetMethod("Get", new[] { CommonType.Int32 });
}
else
{
indexerGet = propertyInfo.PropertyType.GetMethod("get_Item");
}
if (indexerGet == null)
{
throw new SmartSqlException($"can not find Get Indexer:{propertyInfo.PropertyType}");
}
var indexerGetParamType = indexerGet.GetParameters().First().ParameterType;
if (indexerGetParamType == CommonType.String)
{
ilGen.LoadString(current.Index);
}
else if (indexerGetParamType == CommonType.Int32)
{
if (!Int32.TryParse(current.Index, out var idx))
{
throw new SmartSqlException($"Index:[{current.Index}] can not convert to Int32.");
}
ilGen.LoadInt32(idx);
}
ilGen.Call(indexerGet);
propertyType = indexerGet.ReturnType;
if (propertyType.IsValueType)
{
ilGen.Box(propertyType);
}
break;
}
}
}
ilGen.Return();
getMethodImpl = (Func <object, object>)dynamicMethod.CreateDelegate(typeof(Func <object, object>));
return(true);
}
