コード例 #1
0
ファイル: Expression.cs プロジェクト: jblacker/Flee
        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);
        }