private IRuleFilter CompileFilters(IRuleDefinition ruleDefinition, IList <Declaration> ruleDeclarations)
{
var conditions = new List <IActivationCondition>();
var keySelectors = new List <IActivationExpression>();
foreach (var filter in ruleDefinition.FilterGroup.Filters)
{
switch (filter.FilterType)
{
case FilterType.Predicate:
var condition = ExpressionCompiler.CompileFilterCondition(filter, ruleDeclarations);
conditions.Add(condition);
break;
case FilterType.KeyChange:
var keySelector = ExpressionCompiler.CompileFilterExpression(filter, ruleDeclarations);
keySelectors.Add(keySelector);
break;
default:
throw new ArgumentOutOfRangeException($"Unrecognized filter type. FilterType={filter.FilterType}");
}
}
var compiledFilter = new RuleFilter(conditions, keySelectors);
return(compiledFilter);
}