Squashed 'lib/lwip/lwip/' content from commit 0a0452b2c39b

git-subtree-dir: lib/lwip/lwip
git-subtree-split: 0a0452b2c39bdd91e252aef045c115f88f6ca773

1 files changed, 293 insertions, 0 deletions

diff --git a/contrib/apps/LwipMibCompiler/LwipSnmpCodeGeneration/SnmpScalarAggregationNode.cs b/contrib/apps/LwipMibCompiler/LwipSnmpCodeGeneration/SnmpScalarAggregationNode.cs
new file mode 100644
index 00000000000..f5c558c56a9
--- /dev/null
+++ b/contrib/apps/LwipMibCompiler/LwipSnmpCodeGeneration/SnmpScalarAggregationNode.cs
@@ -0,0 +1,293 @@
+/*
+ * 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.Collections.Generic;
+using System.Globalization;
+using CCodeGeneration;
+
+namespace LwipSnmpCodeGeneration
+{
+	public abstract class SnmpScalarAggregationNode: SnmpNode
+	{
+		private bool getMethodRequired  = false;
+		private bool testMethodRequired = false;
+		private bool setMethodRequired  = false;
+
+		protected SnmpScalarAggregationNode(SnmpTreeNode parentNode)
+			: base(parentNode)
+		{
+		}
+
+		protected virtual string GetMethodName
+		{
+			get { return this.FullNodeName + LwipDefs.FnctSuffix_GetValue; }
+		}
+
+		protected bool GetMethodRequired
+		{
+			get { return this.getMethodRequired; }
+		}
+
+		protected virtual string TestMethodName
+		{
+			get { return this.FullNodeName + LwipDefs.FnctSuffix_SetTest; }
+		}
+
+		protected bool TestMethodRequired
+		{
+			get { return this.testMethodRequired; }
+		}
+
+		protected virtual string SetMethodName
+		{
+			get { return this.FullNodeName + LwipDefs.FnctSuffix_SetValue; }
+		}
+
+		protected bool SetMethodRequired
+		{
+			get { return this.setMethodRequired; }
+		}
+
+		protected abstract IEnumerable<SnmpScalarNode> AggregatedScalarNodes
+		{
+			get;
+		}
+
+		public override void Analyze()
+		{
+			base.Analyze();
+
+			this.getMethodRequired  = false;
+			this.testMethodRequired = false;
+			this.setMethodRequired  = false;
+
+			foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
+			{
+				if ((scalarNode.AccessMode == SnmpAccessMode.ReadOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
+				{
+					this.getMethodRequired = true;
+				}
+				if ((scalarNode.AccessMode == SnmpAccessMode.WriteOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
+				{
+					this.testMethodRequired = true;
+					this.setMethodRequired = true;
+				}
+
+				if (this.getMethodRequired && this.setMethodRequired)
+				{
+					break;
+				}
+			}
+		}
+
+		protected void GenerateAggregatedCode(MibCFile mibFile, VariableType instanceType, string switchSelector, bool generateDeclarations = true, bool generateImplementations = true)
+		{
+			if (this.getMethodRequired)
+			{
+				FunctionDeclaration getMethodDecl = new FunctionDeclaration(this.GetMethodName, isStatic: true);
+				getMethodDecl.Parameter.Add(instanceType);
+				getMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
+				getMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_S16);
+
+				if (generateDeclarations)
+				{
+					mibFile.Declarations.Add(getMethodDecl);
+				}
+				if (generateImplementations)
+				{
+					Function getMethod = Function.FromDeclaration(getMethodDecl);
+					GenerateGetMethodCode(getMethod, switchSelector);
+					mibFile.Implementation.Add(getMethod);
+				}
+			}
+	
+			if (this.testMethodRequired)
+			{
+				FunctionDeclaration testMethodDecl = new FunctionDeclaration(this.TestMethodName, isStatic: true);
+				testMethodDecl.Parameter.Add(instanceType);
+				testMethodDecl.Parameter.Add(new VariableType("len", LwipDefs.Vt_U16));
+				testMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
+				testMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_Snmp_err);
+
+				if (generateDeclarations)
+				{
+					mibFile.Declarations.Add(testMethodDecl);
+				}
+				if (generateImplementations)
+				{
+					Function testMethod = Function.FromDeclaration(testMethodDecl);
+					GenerateTestMethodCode(testMethod, switchSelector);
+					mibFile.Implementation.Add(testMethod);
+				}
+			}
+
+			if (this.setMethodRequired)
+			{
+				FunctionDeclaration setMethodDecl = new FunctionDeclaration(this.SetMethodName, isStatic: true);
+				setMethodDecl.Parameter.Add(instanceType);
+				setMethodDecl.Parameter.Add(new VariableType("len", LwipDefs.Vt_U16));
+				setMethodDecl.Parameter.Add(new VariableType("value", VariableType.VoidString, "*"));
+				setMethodDecl.ReturnType = new VariableType(null, LwipDefs.Vt_Snmp_err);
+				
+				if (generateDeclarations)
+				{
+					mibFile.Declarations.Add(setMethodDecl);
+				}
+				if (generateImplementations)
+				{
+					Function setMethod = Function.FromDeclaration(setMethodDecl);
+					GenerateSetMethodCode(setMethod, switchSelector);
+					mibFile.Implementation.Add(setMethod);
+				}
+			}
+		}
+
+		protected virtual void GenerateGetMethodCode(Function getMethod, string switchSelector)
+		{
+			VariableDeclaration returnValue = new VariableDeclaration((VariableType)getMethod.ReturnType.Clone());
+			returnValue.Type.Name = "value_len";
+			getMethod.Declarations.Add(returnValue);
+			Switch sw = new Switch(switchSelector);
+
+			bool valueVarUsed = false;
+
+			foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
+			{
+				if ((scalarNode.AccessMode == SnmpAccessMode.ReadOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
+				{
+					SwitchCase sc = new SwitchCase(scalarNode.Oid.ToString(CultureInfo.InvariantCulture));
+					sc.Declarations.Add(new Comment(scalarNode.Name, singleLine: true));
+
+					scalarNode.GenerateGetMethodCode(sc, getMethod.Parameter[1].Name, ref valueVarUsed, returnValue.Type.Name);
+
+					sw.Switches.Add(sc);
+				}
+			}
+
+			SwitchCase scd = SwitchCase.GenerateDefault();
+			scd.AddCodeFormat("LWIP_DEBUGF(SNMP_MIB_DEBUG,(\"{0}(): unknown id: %\"S32_F\"\\n\", {1}));", getMethod.Name, switchSelector);
+			scd.AddCodeFormat("{0} = 0;", returnValue.Type.Name);
+			sw.Switches.Add(scd);
+
+			if (!valueVarUsed)
+			{
+				getMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", getMethod.Parameter[1].Name);
+			}
+
+			getMethod.AddElement(sw);
+
+			getMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
+		}
+
+		protected virtual void GenerateTestMethodCode(Function testMethod, string switchSelector)
+		{
+			VariableDeclaration returnValue = new VariableDeclaration((VariableType)testMethod.ReturnType.Clone(), LwipDefs.Def_ErrorCode_WrongValue);
+			returnValue.Type.Name = "err";
+			testMethod.Declarations.Add(returnValue);
+			Switch sw = new Switch(switchSelector);
+
+			bool valueVarUsed = false;
+			bool lenVarUsed = false;
+
+			foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
+			{
+				if ((scalarNode.AccessMode == SnmpAccessMode.WriteOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
+				{
+					SwitchCase sc = new SwitchCase(scalarNode.Oid.ToString(CultureInfo.InvariantCulture));
+					sc.Declarations.Add(new Comment(scalarNode.Name, singleLine: true));
+
+					scalarNode.GenerateTestMethodCode(sc, testMethod.Parameter[2].Name, ref valueVarUsed, testMethod.Parameter[1].Name, ref lenVarUsed, returnValue.Type.Name);
+
+					sw.Switches.Add(sc);
+				}
+			}
+
+			SwitchCase scd = SwitchCase.GenerateDefault();
+			scd.AddCodeFormat("LWIP_DEBUGF(SNMP_MIB_DEBUG,(\"{0}(): unknown id: %\"S32_F\"\\n\", {1}));", testMethod.Name, switchSelector);
+			sw.Switches.Add(scd);
+
+			if (!valueVarUsed)
+			{
+				testMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", testMethod.Parameter[2].Name);
+			}
+			if (!lenVarUsed)
+			{
+				testMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", testMethod.Parameter[1].Name);
+			}
+
+			testMethod.AddElement(sw);
+
+			testMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
+		}
+
+		protected virtual void GenerateSetMethodCode(Function setMethod, string switchSelector)
+		{
+			VariableDeclaration returnValue = new VariableDeclaration((VariableType)setMethod.ReturnType.Clone(), LwipDefs.Def_ErrorCode_Ok);
+			returnValue.Type.Name = "err";
+			setMethod.Declarations.Add(returnValue);
+			Switch sw = new Switch(switchSelector);
+
+			bool valueVarUsed = false;
+			bool lenVarUsed = false;
+			
+			foreach (SnmpScalarNode scalarNode in this.AggregatedScalarNodes)
+			{
+				if ((scalarNode.AccessMode == SnmpAccessMode.WriteOnly) || (scalarNode.AccessMode == SnmpAccessMode.ReadWrite))
+				{
+					SwitchCase sc = new SwitchCase(scalarNode.Oid.ToString(CultureInfo.InvariantCulture));
+					sc.Declarations.Add(new Comment(scalarNode.Name, singleLine: true));
+
+					scalarNode.GenerateSetMethodCode(sc, setMethod.Parameter[2].Name, ref valueVarUsed, setMethod.Parameter[1].Name, ref lenVarUsed, returnValue.Type.Name);
+
+					sw.Switches.Add(sc);
+				}
+			}
+
+			SwitchCase scd = SwitchCase.GenerateDefault();
+			scd.AddCodeFormat("LWIP_DEBUGF(SNMP_MIB_DEBUG,(\"{0}(): unknown id: %\"S32_F\"\\n\", {1}));", setMethod.Name, switchSelector);
+			sw.Switches.Add(scd);
+
+			if (!valueVarUsed)
+			{
+				setMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", setMethod.Parameter[2].Name);
+			}
+			if (!lenVarUsed)
+			{
+				setMethod.AddCodeFormat("LWIP_UNUSED_ARG({0});", setMethod.Parameter[1].Name);
+			}
+
+			setMethod.AddElement(sw);
+
+			setMethod.AddCodeFormat("return {0};", returnValue.Type.Name);
+		}
+	}
+}