public Func <T, bool> GetFunctionForExpressFormsFilters <T>(Dictionary <string, ExpressFormsFilter> filters, Dictionary <string, Dictionary <string, string> > filterEntries)
{
DynamicMethod method = new DynamicMethod("Filter", typeof(bool), new Type[] { typeof(T) });
ILGenerator generator = method.GetILGenerator();
PropertyInfo[] propertiesToFilterOn = typeof(T).GetProperties()
.Where(p => PropertyNames.Contains(p.Name))
.ToArray();
int variableIndex = 0;
foreach (PropertyInfo property in propertiesToFilterOn)
{
// Generate IL variable declarations.
// First, check that a filter has been provided for this property to avoid errors.
if (!filters.Keys.Contains(property.Name))
{
continue;
}
ExpressFormsFilter filter = filters[property.Name];
filter.GenerateFilterLocalDeclarations(generator, variableIndex, out variableIndex);
}
foreach (PropertyInfo property in propertiesToFilterOn)
{
// Generate IL to implement filtering
// First, check that a filter has been provided for this property to avoid errors.
if (!filters.Keys.Contains(property.Name) || !filterEntries.Keys.Contains(property.Name))
{
continue;
}
ExpressFormsFilter filter = filters[property.Name];
Dictionary <string, string> filterEntry = filterEntries[property.Name];
filter.GenerateFilterIl(generator, filterEntry, property);
}
generator.EmitReturnTrue();
return((Func <T, bool>)(method.CreateDelegate(typeof(Func <T, bool>))));
}
public ExpressFormsPassThruFilter(ExpressFormsFilter filter)
: base(filter)
{
PartialViewName = "ExpressFormsFilters/NoFilterAvailable";
}
public ExpressFormsFilterNumber(ExpressFormsFilter filter)
: base(filter)
{
PartialViewName = "ExpressFormsFilters/ExpressFormsFilterNumber";
}
public ExpressFormsFilterText(ExpressFormsFilter filter)
: base(filter)
{
PartialViewName = "ExpressFormsFilters/ExpressFormsFilterText";
}
public ExpressFormsFilterDate(ExpressFormsFilter filter)
: base(filter)
{
PartialViewName = "ExpressFormsFilters/ExpressFormsFilterDate";
}
public ExpressFormsFilterBool(ExpressFormsFilter filter)
: base(filter)
{
PartialViewName = "ExpressFormsFilters/ExpressFormsFilterBool";
}