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
ExpressionElement topElement = MyContext.Parse(expression, services);
if (options.ResultType == null)
{
options.ResultType = topElement.ResultType;
}
RootExpressionElement rootElement = new RootExpressionElement(topElement, options.ResultType);
DynamicMethod dm = this.CreateDynamicMethod();
FleeILGenerator ilg = new FleeILGenerator(dm.GetILGenerator(), 0, false);
// Emit the IL
rootElement.Emit(ilg, services);
ilg.ValidateLength();
// Emit to an assembly if required
if (options.EmitToAssembly == true)
{
EmitToAssembly(rootElement, services);
}
Type delegateType = typeof(ExpressionEvaluator <>).MakeGenericType(typeof(T));
MyEvaluator = dm.CreateDelegate(delegateType) as ExpressionEvaluator <T>;
}