public static IAggregateExpression CompileAggregateExpression(NamedExpressionElement element, IEnumerable <Declaration> declarations)
{
var declarationsList = declarations.ToList();
if (element.Imports.Count() == 1 &&
Equals(element.Imports.Single(), declarationsList.Last()))
{
var optimizer = new ExpressionSingleParameterOptimizer <Func <object, object> >();
var optimizedExpression = optimizer.ConvertParameter(element.Expression);
var @delegate = optimizedExpression.Compile();
var fastDelegate = Create(@delegate, element.Expression.Parameters.Count);
var expression = new AggregateFactExpression(element.Name, element.Expression, fastDelegate);
return(expression);
}
else
{
var optimizer = new ExpressionMultiParameterOptimizer <Func <object[], object> >();
var optimizedExpression = optimizer.CompactParameters(element.Expression, 0);
var @delegate = optimizedExpression.Compile();
var fastDelegate = Create(@delegate, element.Expression.Parameters.Count);
var factMap = IndexMap.CreateMap(element.Imports, declarationsList);
var expression = new AggregateExpression(element.Name, element.Expression, fastDelegate, factMap);
return(expression);
}
}
public static FastDelegate <Action <IContext, object[]> > Action(LambdaExpression expression)
{
var optimizer = new ExpressionMultiParameterOptimizer <Action <IContext, object[]> >();
var optimizedExpression = optimizer.CompactParameters(expression, 1);
var @delegate = optimizedExpression.Compile();
var fastDelegate = Create(@delegate, expression.Parameters.Count - 1);
return(fastDelegate);
}
public static FastDelegate <Func <object[], bool> > BetaCondition(LambdaExpression expression)
{
var optimizer = new ExpressionMultiParameterOptimizer <Func <object[], bool> >();
var optimizedExpression = optimizer.CompactParameters(expression, 0);
var @delegate = optimizedExpression.Compile();
var fastDelegate = Create(@delegate, expression.Parameters.Count);
return(fastDelegate);
}
public static IActivationCondition CompileFilterCondition(FilterElement element, IEnumerable <Declaration> declarations)
{
var optimizer = new ExpressionMultiParameterOptimizer <Func <object[], bool> >();
var optimizedExpression = optimizer.CompactParameters(element.Expression, 0);
var @delegate = optimizedExpression.Compile();
var fastDelegate = Create(@delegate, element.Expression.Parameters.Count);
var factMap = IndexMap.CreateMap(element.Imports, declarations);
var expression = new ActivationCondition(element.Expression, fastDelegate, factMap);
return(expression);
}
public static IBindingExpression CompileBindingExpression(BindingElement element, IEnumerable <Declaration> declarations)
{
var optimizer = new ExpressionMultiParameterOptimizer <Func <object[], object> >();
var optimizedExpression = optimizer.CompactParameters(element.Expression, 0);
var @delegate = optimizedExpression.Compile();
var fastDelegate = Create(@delegate, element.Expression.Parameters.Count);
var factMap = IndexMap.CreateMap(element.References, declarations);
var expression = new BindingExpression(element.Expression, fastDelegate, factMap);
return(expression);
}
public static IRuleAction CompileAction(ActionElement element, IEnumerable <Declaration> declarations, IEnumerable <Declaration> dependencies)
{
var optimizer = new ExpressionMultiParameterOptimizer <Action <IContext, object[]> >();
var optimizedExpression = optimizer.CompactParameters(element.Expression, 1);
var @delegate = optimizedExpression.Compile();
var fastDelegate = Create(@delegate, element.Expression.Parameters.Count - 1);
var tupleFactMap = IndexMap.CreateMap(element.Imports, declarations);
var dependencyIndexMap = IndexMap.CreateMap(element.Imports, dependencies);
var action = new RuleAction(element.Expression, fastDelegate, tupleFactMap, dependencyIndexMap, element.ActionTrigger);
return(action);
}