mirror of
https://github.com/lwip-tcpip/lwip.git
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294 lines
9.9 KiB
C#
294 lines
9.9 KiB
C#
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Martin Hentschel <info@cl-soft.de>
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*
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*/
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using System.Collections.Generic;
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using System.Globalization;
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using CCodeGeneration;
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namespace LwipSnmpCodeGeneration
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{
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public abstract class SnmpScalarAggregationNode: SnmpNode
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{
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private bool getMethodRequired = false;
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private bool testMethodRequired = false;
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private bool setMethodRequired = false;
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protected SnmpScalarAggregationNode(SnmpTreeNode parentNode)
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: base(parentNode)
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{
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}
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protected virtual string GetMethodName
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{
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get { return this.FullNodeName + LwipDefs.FnctSuffix_GetValue; }
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}
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protected bool GetMethodRequired
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{
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get { return this.getMethodRequired; }
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}
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protected virtual string TestMethodName
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{
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get { return this.FullNodeName + LwipDefs.FnctSuffix_SetTest; }
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}
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protected bool TestMethodRequired
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{
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get { return this.testMethodRequired; }
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}
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protected virtual string SetMethodName
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{
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get { return this.FullNodeName + LwipDefs.FnctSuffix_SetValue; }
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}
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protected bool SetMethodRequired
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{
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get { return this.setMethodRequired; }
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}
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protected abstract IEnumerable<SnmpScalarNode> AggregatedScalarNodes
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{
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get;
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}
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public override void Analyze()
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{
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base.Analyze();
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this.getMethodRequired = false;
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this.testMethodRequired = false;
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this.setMethodRequired = false;
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foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
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{
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if ((scalarNode.AccessMode == SnmpAccessMode.ReadOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
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{
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this.getMethodRequired = true;
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}
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if ((scalarNode.AccessMode == SnmpAccessMode.WriteOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
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{
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this.testMethodRequired = true;
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this.setMethodRequired = true;
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}
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if (this.getMethodRequired && this.setMethodRequired)
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{
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break;
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}
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}
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}
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protected void GenerateAggregatedCode(MibCFile mibFile, VariableType instanceType, string switchSelector, bool generateDeclarations = true, bool generateImplementations = true)
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{
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if (this.getMethodRequired)
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{
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FunctionDeclaration getMethodDecl = new FunctionDeclaration(this.GetMethodName, isStatic: true);
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getMethodDecl.Parameter.Add(instanceType);
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getMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
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getMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_S16);
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if (generateDeclarations)
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{
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mibFile.Declarations.Add(getMethodDecl);
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}
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if (generateImplementations)
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{
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Function getMethod = Function.FromDeclaration(getMethodDecl);
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GenerateGetMethodCode(getMethod, switchSelector);
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mibFile.Implementation.Add(getMethod);
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}
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}
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if (this.testMethodRequired)
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{
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FunctionDeclaration testMethodDecl = new FunctionDeclaration(this.TestMethodName, isStatic: true);
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testMethodDecl.Parameter.Add(instanceType);
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testMethodDecl.Parameter.Add(new VariableType("len", LwipDefs.Vt_U16));
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testMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
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testMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_Snmp_err);
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if (generateDeclarations)
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{
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mibFile.Declarations.Add(testMethodDecl);
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}
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if (generateImplementations)
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{
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Function testMethod = Function.FromDeclaration(testMethodDecl);
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GenerateTestMethodCode(testMethod, switchSelector);
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mibFile.Implementation.Add(testMethod);
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}
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}
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if (this.setMethodRequired)
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{
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FunctionDeclaration setMethodDecl = new FunctionDeclaration(this.SetMethodName, isStatic: true);
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setMethodDecl.Parameter.Add(instanceType);
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setMethodDecl.Parameter.Add(new VariableType("len", LwipDefs.Vt_U16));
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setMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
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setMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_Snmp_err);
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if (generateDeclarations)
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{
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mibFile.Declarations.Add(setMethodDecl);
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}
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if (generateImplementations)
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{
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Function setMethod = Function.FromDeclaration(setMethodDecl);
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GenerateSetMethodCode(setMethod, switchSelector);
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mibFile.Implementation.Add(setMethod);
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}
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}
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}
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protected virtual void GenerateGetMethodCode(Function getMethod, string switchSelector)
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{
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VariableDeclaration returnValue = new VariableDeclaration((VariableType)getMethod.ReturnType.Clone());
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returnValue.Type.Name = "value_len";
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getMethod.Declarations.Add(returnValue);
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Switch sw = new Switch(switchSelector);
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bool valueVarUsed = false;
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foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
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{
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if ((scalarNode.AccessMode == SnmpAccessMode.ReadOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
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{
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SwitchCase sc = new SwitchCase(scalarNode.Oid.ToString(CultureInfo.InvariantCulture));
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sc.Declarations.Add(new Comment(scalarNode.Name, singleLine: true));
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scalarNode.GenerateGetMethodCode(sc, getMethod.Parameter[1].Name, ref valueVarUsed, returnValue.Type.Name);
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sw.Switches.Add(sc);
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}
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}
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SwitchCase scd = SwitchCase.GenerateDefault();
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scd.AddCodeFormat("LWIP_DEBUGF(SNMP_MIB_DEBUG,(\"{0}(): unknown id: %\"S32_F\"\\n\", {1}));", getMethod.Name, switchSelector);
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scd.AddCodeFormat("{0} = 0;", returnValue.Type.Name);
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sw.Switches.Add(scd);
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if (!valueVarUsed)
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{
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getMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", getMethod.Parameter[1].Name);
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}
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getMethod.AddElement(sw);
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getMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
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}
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protected virtual void GenerateTestMethodCode(Function testMethod, string switchSelector)
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{
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VariableDeclaration returnValue = new VariableDeclaration((VariableType)testMethod.ReturnType.Clone(), LwipDefs.Def_ErrorCode_WrongValue);
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returnValue.Type.Name = "err";
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testMethod.Declarations.Add(returnValue);
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Switch sw = new Switch(switchSelector);
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bool valueVarUsed = false;
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bool lenVarUsed = false;
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foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
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{
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if ((scalarNode.AccessMode == SnmpAccessMode.WriteOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
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{
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SwitchCase sc = new SwitchCase(scalarNode.Oid.ToString(CultureInfo.InvariantCulture));
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sc.Declarations.Add(new Comment(scalarNode.Name, singleLine: true));
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scalarNode.GenerateTestMethodCode(sc, testMethod.Parameter[2].Name, ref valueVarUsed, testMethod.Parameter[1].Name, ref lenVarUsed, returnValue.Type.Name);
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sw.Switches.Add(sc);
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}
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}
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SwitchCase scd = SwitchCase.GenerateDefault();
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scd.AddCodeFormat("LWIP_DEBUGF(SNMP_MIB_DEBUG,(\"{0}(): unknown id: %\"S32_F\"\\n\", {1}));", testMethod.Name, switchSelector);
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sw.Switches.Add(scd);
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if (!valueVarUsed)
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{
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testMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", testMethod.Parameter[2].Name);
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}
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if (!lenVarUsed)
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{
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testMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", testMethod.Parameter[1].Name);
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}
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testMethod.AddElement(sw);
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testMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
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}
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protected virtual void GenerateSetMethodCode(Function setMethod, string switchSelector)
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{
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VariableDeclaration returnValue = new VariableDeclaration((VariableType)setMethod.ReturnType.Clone(), LwipDefs.Def_ErrorCode_Ok);
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returnValue.Type.Name = "err";
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setMethod.Declarations.Add(returnValue);
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Switch sw = new Switch(switchSelector);
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bool valueVarUsed = false;
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bool lenVarUsed = false;
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foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
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{
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if ((scalarNode.AccessMode == SnmpAccessMode.WriteOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
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{
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SwitchCase sc = new SwitchCase(scalarNode.Oid.ToString(CultureInfo.InvariantCulture));
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sc.Declarations.Add(new Comment(scalarNode.Name, singleLine: true));
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scalarNode.GenerateSetMethodCode(sc, setMethod.Parameter[2].Name, ref valueVarUsed, setMethod.Parameter[1].Name, ref lenVarUsed, returnValue.Type.Name);
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sw.Switches.Add(sc);
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}
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}
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SwitchCase scd = SwitchCase.GenerateDefault();
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scd.AddCodeFormat("LWIP_DEBUGF(SNMP_MIB_DEBUG,(\"{0}(): unknown id: %\"S32_F\"\\n\", {1}));", setMethod.Name, switchSelector);
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sw.Switches.Add(scd);
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if (!valueVarUsed)
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{
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setMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", setMethod.Parameter[2].Name);
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}
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if (!lenVarUsed)
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{
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setMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", setMethod.Parameter[1].Name);
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}
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setMethod.AddElement(sw);
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setMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
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}
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}
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}
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