private static Func <object, object[], DryvResult> CompileValidationExpression(this DryvRuleDefinition rule)
{
var lambdaExpression = rule.ValidationExpression;
rule.EnsurePreevaluationOptionTypes();
var modelParameter = Expression.Parameter(typeof(object), "model");
var optionsParameter = Expression.Parameter(typeof(object[]), "options");
var invokeArguments = new List <Expression>
{
Expression.Convert(modelParameter, lambdaExpression.Parameters.First().Type)
};
invokeArguments.AddOptionParameters(lambdaExpression, optionsParameter, 1);
var invokeExpression = Expression.Invoke(lambdaExpression, invokeArguments);
var resultLambda = Expression.Lambda <Func <object, object[], DryvResult> >(invokeExpression, modelParameter, optionsParameter);
return(resultLambda.Compile());
}
private static Func <object[], bool> CompileEnablingExpression(this DryvRuleDefinition rule)
{
var lambdaExpression = rule.EnablingExpression;
rule.EnsurePreevaluationOptionTypes();
var optionsParameter = Expression.Parameter(typeof(object[]), "options");
Expression <Func <object[], bool> > resultLambda;
if (lambdaExpression != null)
{
var invokeArguments = new List <Expression>();
invokeArguments.AddOptionParameters(lambdaExpression, optionsParameter);
var invokeExpression = Expression.Invoke(lambdaExpression, invokeArguments);
resultLambda = Expression.Lambda <Func <object[], bool> >(invokeExpression, optionsParameter);
}
else
{
resultLambda = Expression.Lambda <Func <object[], bool> >(Expression.Constant(true), optionsParameter);
}
return(resultLambda.Compile());
}
