public bool TryGetAffectableEntityInfo(string targetValueName, out AffectableEntityInfo info)
{
var rtn = new List <AffectableEntityInfo>();
foreach (var entityInfo in _affectableCache.Values)
{
var result = entityInfo.PropertyExpressions.Values.FirstOrDefault(
_ => _.TargetValueNames.Any(v => v == targetValueName));
if (result != null)
{
rtn.Add(entityInfo);
}
}
if (rtn.Count == 1)
{
info = rtn[0];
return(true);
}
if (rtn.Count == 0)
{
info = null;
return(false);
}
throw new ArgumentException("duplicate targetValueName.");
}
public ValuePropertyContainer(AffectableEntityInfo entityInfo, string targetName,
Tuple <ParameterExpression, ParameterExpression> parameters)
{
EntityInfo = entityInfo;
Properties = entityInfo.GetValueProperty(targetName);
Parameter = parameters.Item1;
NewParameter = parameters.Item2;
}
private static ParserWithContainer <Expression, KeyPropertyContainer> CallKeyTerm(AffectableEntityInfo info,
ParameterExpression parameter, int index)
{
GetSetProperty prop;
if (!info.TryGetKeyProperty(index, out prop))
{
return(new ParserWithContainer <Expression, KeyPropertyContainer>(
AlwaysFailure(), null));
}
var container = new KeyPropertyContainer(prop, parameter);
return(new ParserWithContainer <Expression, KeyPropertyContainer>(
KeyTerm(container).Parser, container));
}
private Expression BuildMain(ExpressionResult[] expressionResults, ParameterCache paramCache, AffectableEntityInfo info,
ParameterExpression parameter, ParameterExpression newParameter)
{
var newAffectableEntity = Expression.Property(newParameter, info.PropertyInfo);
if (expressionResults.Length == 0)
{
return(newParameter);
}
var affectableEntity = Expression.Property(parameter, info.PropertyInfo);
var selectParam = paramCache.Get(expressionResults[0].FunctionName);
var lambda = Expression.Lambda(BuildIfThenElseSection(expressionResults, selectParam, info.ReturnLabel),
selectParam.Item1);
var selectExpr = SelectExpression(selectParam.Item1.Type, affectableEntity, lambda);
return(Expression.Assign(newAffectableEntity, selectExpr));
}
