private void Compile(string expression, ExpressionOptions options)
{
// Add the services that will be used by elements during the compile
IServiceContainer services = new ServiceContainer();
this.AddServices(services);
// Parse and get the root element of the parse tree
var topElement = this.Context.Parse(expression, services);
if (options.ResultType == null)
{
options.ResultType = topElement.ResultType;
}
var rootElement = new RootExpressionElement(topElement, options.ResultType);
var dm = this.CreateDynamicMethod();
var ilg = new FleeIlGenerator(dm.GetILGenerator());
// Emit the IL
rootElement.Emit(ilg, services);
ilg.ValidateLength();
// Emit to an assembly if required
if (options.EmitToAssembly)
{
EmitToAssembly(rootElement, services);
}
var delegateType = typeof(ExpressionEvaluator <>).MakeGenericType(typeof(T));
this.myEvaluator = (ExpressionEvaluator <T>)dm.CreateDelegate(delegateType);
}