C# Compilation.ExpressionBuilderContext类代码示例

        public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
        {
            if (!entry.Expression.Contains(","))
              {
            throw new ArgumentException("Must include two numbers separated by a comma.");
              }
              else
              {
            // get two numbers
            string[] numbers = entry.Expression.Split(',');
            if (numbers.Length != 2)
            {
              throw new ArgumentException("Only include two numbers");
            }
            else
            {
              int lowerLimit, upperLimit;
              if (Int32.TryParse(numbers[0], out lowerLimit) && Int32.TryParse(numbers[1], out upperLimit))
              {
            CodeTypeReferenceExpression typeRef = new CodeTypeReferenceExpression(this.GetType());
            CodeExpression[] methodParameters = new CodeExpression[2];
            methodParameters[0] = new CodePrimitiveExpression(lowerLimit);
            methodParameters[1] = new CodePrimitiveExpression(upperLimit);

            return new CodeMethodInvokeExpression(typeRef, "GetRandomNumber", methodParameters);
              }
              else
              {
            throw new ArgumentException("Use valid Integers");
              }
            }
              }
        }

 public override object EvaluateExpression(object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
 {
     var fields = parsedData as ResourceExpressionFields;
     EnsureResourceProviderFactory();
     IResourceProvider provider = _resourceProviderFactory.CreateGlobalResourceProvider(fields.ClassKey);
     return provider.GetObject(fields.ResourceKey, null);
 }

 internal void ParseExpression(ExpressionBuilderContext context)
 {
     if (((this.Expression != null) && (this.ExpressionPrefix != null)) && (this.ExpressionBuilder != null))
     {
         this._parsedExpressionData = this.ExpressionBuilder.ParseExpression(this.Expression, base.Type, context);
     }
 }

        internal static string GetResourceString(HttpContextBase httpContext,
                                                string expression,
                                                string virtualPath,
                                                object[] args)

        {
            ExpressionBuilderContext context = new ExpressionBuilderContext(virtualPath);

            ResourceExpressionBuilder builder = new ResourceExpressionBuilder();

            ResourceExpressionFields fields = (ResourceExpressionFields) builder
                                                                             .ParseExpression(expression,
                                                                                              typeof (string), context);


            if (!string.IsNullOrEmpty(fields.ClassKey))

                return string.Format((string) httpContext.GetGlobalResourceObject(
                                                  fields.ClassKey,
                                                  fields.ResourceKey,
                                                  CultureInfo.CurrentUICulture),
                                     args);


            return string.Format((string) httpContext.GetLocalResourceObject(
                                              virtualPath,
                                              fields.ResourceKey,
                                              CultureInfo.CurrentUICulture),
                                 args);
        }

        /// <summary>
        /// Gets the code expression.
        /// </summary>
        /// <param name="entry">
        /// The entry.
        /// </param>
        /// <param name="parsedData">
        /// The parsed data.
        /// </param>
        /// <param name="context">
        /// The context.
        /// </param>
        /// <returns>
        /// A CodeExpression.
        /// </returns>
        public override CodeExpression GetCodeExpression(
            BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
        {
            var typeName = BeforeLast(entry.Expression, ".");
            var propertyName = AfterLast(entry.Expression, ".");

            return new CodePrimitiveExpression(PropertyLength(typeName, propertyName));
        }

 public override object EvaluateExpression(object target, BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
 {
     if (target is Control)
     {
         return GetRouteValue(context.TemplateControl.Page, entry.Expression.Trim(), entry.ControlType, entry.Name);
     }
     return null;
 }

 public override CodeExpression GetCodeExpression(System.Web.UI.BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
 {
     return new CodeMethodInvokeExpression(
         new CodeTypeReferenceExpression(typeof(WebManager) ),
         "GetService",
         new CodePrimitiveExpression( entry.Expression.Trim() ),
         new CodeTypeOfExpression( new CodeTypeReference(entry.PropertyInfo.PropertyType ) ) );
 }

 public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
 {
     if ((entry.DeclaringType == null) || (entry.PropertyInfo == null))
     {
         return new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(base.GetType()), "GetAppSetting", new CodeExpression[] { new CodePrimitiveExpression(entry.Expression.Trim()) });
     }
     return new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(base.GetType()), "GetAppSetting", new CodeExpression[] { new CodePrimitiveExpression(entry.Expression.Trim()), new CodeTypeOfExpression(entry.DeclaringType), new CodePrimitiveExpression(entry.PropertyInfo.Name) });
 }

 public override CodeExpression GetCodeExpression(System.Web.UI.BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
 {
     return new CodeMethodInvokeExpression(
         new CodeTypeReferenceExpression(typeof(WebManager) ),
         "GetLabel",
         new CodePrimitiveExpression( entry.Expression.Trim() ),
         new CodePrimitiveExpression( context.VirtualPath ));
 }

        public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
        {
            string property = (string) parsedData;

            CodePrimitiveExpression prim = new CodePrimitiveExpression(property);
            CodeExpression[] args = new[] {prim};
            CodeTypeReferenceExpression refType = new CodeTypeReferenceExpression(this.GetType());
            return new CodeMethodInvokeExpression(refType, "GetProperty", args);
        }

        public override CodeExpression GetCodeExpression(BoundPropertyEntry entry,
            object parsedData, ExpressionBuilderContext context) {

            return new CodeMethodInvokeExpression(
                new CodeTypeReferenceExpression(this.GetType()),
                "GetRouteUrl",
                new CodeThisReferenceExpression(),
                new CodePrimitiveExpression(entry.Expression.Trim()));
        }

 public override CodeExpression GetCodeExpression(
     BoundPropertyEntry entry,
     object parsedData,
     ExpressionBuilderContext context)
 {
     CodeMethodInvokeExpression ex = new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(typeof(ResourceReader)),
     "GetVal", new CodePrimitiveExpression(entry.Expression.ToString().Trim()));
     return ex;
 }

 public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
 {
     ResourceExpressionFields fields = (ResourceExpressionFields) parsedData;
     if (fields.ClassKey.Length == 0)
     {
         return this.GetPageResCodeExpression(fields.ResourceKey, entry);
     }
     return this.GetAppResCodeExpression(fields.ClassKey, fields.ResourceKey, entry);
 }

		public override CodeExpression GetCodeExpression (BoundPropertyEntry entry, object parsedData,
								  ExpressionBuilderContext context)
		{			
			Pair connString = parsedData as Pair;
			return new CodeMethodInvokeExpression (
				new CodeTypeReferenceExpression (typeof (ConnectionStringsExpressionBuilder)),
				(bool)connString.Second ? "GetConnectionStringProviderName" : "GetConnectionString",
				new CodeExpression [] {new CodePrimitiveExpression (connString.First)}
			);
		}

 public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
 {
     Pair pair = (Pair) parsedData;
     string first = (string) pair.First;
     if ((bool) pair.Second)
     {
         return new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(base.GetType()), "GetConnectionString", new CodeExpression[] { new CodePrimitiveExpression(first) });
     }
     return new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(base.GetType()), "GetConnectionStringProviderName", new CodeExpression[] { new CodePrimitiveExpression(first) });
 }