初始化版本

lwip/lwip-2.2.1/contrib/apps/LwipMibCompiler/LwipSnmpCodeGeneration/SnmpNode.cs

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+/*
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Martin Hentschel <info@cl-soft.de>
+ *
+ */
+
+using System;
+using System.Text.RegularExpressions;
+using CCodeGeneration;
+
+namespace LwipSnmpCodeGeneration
+{
+	public abstract class SnmpNode
+	{
+		public static readonly Regex NameValidationRegex = new Regex(@"^\w+$");
+
+		private string name;
+		private readonly SnmpTreeNode parentNode;
+
+		protected SnmpNode(SnmpTreeNode parentNode)
+		{
+			this.parentNode = parentNode;
+		}
+
+		public SnmpTreeNode ParentNode
+		{
+			get { return this.parentNode; }
+		}
+
+		public virtual uint Oid { get; set; }
+
+		public abstract string FullNodeName
+		{
+			get;
+		}
+
+		public virtual string Name
+		{
+			get { return this.name; }
+			set
+			{
+				if (value != this.name)
+				{
+					// check for valid name
+					if (!NameValidationRegex.IsMatch(value))
+					{
+						throw new ArgumentOutOfRangeException("Name");
+					}
+
+					this.name = value;
+				}
+			}
+		}
+
+		public virtual void Generate(MibCFile generatedFile, MibHeaderFile generatedHeaderFile)
+		{
+			int declCount = generatedFile.Declarations.Count;
+			int implCount = generatedFile.Implementation.Count;
+
+			this.GenerateHeaderCode(generatedHeaderFile);
+			this.GenerateCode(generatedFile);
+
+			if (generatedFile.Declarations.Count != declCount)
+			{
+				generatedFile.Declarations.Add(EmptyLine.SingleLine);
+			}
+			if (generatedFile.Implementation.Count != implCount)
+			{
+				generatedFile.Implementation.Add(EmptyLine.SingleLine);
+			}
+		}
+
+		public abstract void GenerateCode(MibCFile mibFile);
+
+		public virtual void GenerateHeaderCode(MibHeaderFile mibHeaderFile)
+		{
+		}
+
+		/// <summary>
+		/// Called after node structure creation is completed and before code is created.
+		/// Offers the possibility to perform operations depending on properties/subnodes.
+		/// If the node shall be transformed to another node(-type) than the own instance
+		/// may be replaced on parent node by the transformed instance.
+		/// Calling sequence is always from leafs up to root. So a tree node can assume
+		/// that the analyze method was already called on all child nodes.
+		/// E.g. a tree node only has scalar sub nodes -> it transforms itself to a scalar array node
+		/// </summary>
+		/// <returns>The transformed node or null if nothing shall be changed in parent structure.</returns>
+		public virtual void Analyze()
+		{
+		}
+	}
+}