SnmpMib.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;
using CCodeGeneration;

namespace LwipSnmpCodeGeneration
{
    public class SnmpMib : SnmpTreeNode
    {
        public uint[] BaseOid { get; set; }

        public SnmpMib()
            : base(null)
        {
        }

        public SnmpMib(uint[] baseOid)
            : base(null)
        {
            this.BaseOid = baseOid;
        }

        public override string FullNodeName
        {
            get { return this.Name + "_root"; }
        }

        public override void GenerateCode(MibCFile mibFile)
        {
            base.GenerateCode(mibFile);

            System.Diagnostics.Debug.Assert((this.BaseOid != null) && (this.BaseOid.Length > 0));
            
            // create and add BaseOID declarations
            StringBuilder boidInitialization = new StringBuilder("{");
            foreach (uint t in this.BaseOid)
            {
                boidInitialization.Append(t);
                boidInitialization.Append(",");
            }
            boidInitialization.Length -= 1;
            boidInitialization.Append("}");

            VariableDeclaration boidDecl = new VariableDeclaration(
                new VariableType(this.Name + "_base_oid", LwipDefs.Vt_U32, null, ConstType.Value, String.Empty),
                boidInitialization.ToString(), true);

            mibFile.Declarations.Add(boidDecl);
            mibFile.Declarations.Add(GetExportDeclaration());
        }

        public override void GenerateHeaderCode(MibHeaderFile mibHeaderFile)
        {
            mibHeaderFile.Includes.Add(new PP_Include("lwip/apps/snmp_core.h"));

            mibHeaderFile.VariableDeclarations.Add(VariablePrototype.FromVariableDeclaration(GetExportDeclaration()));
        }

        VariableDeclaration GetExportDeclaration()
        {
            return new VariableDeclaration(
                new VariableType(this.Name, LwipDefs.Vt_StMib, null, ConstType.Value),
                String.Format("{{{0}_base_oid, LWIP_ARRAYSIZE({0}_base_oid), &{1}.node}}", this.Name, this.FullNodeName));
        }
    }
}