加入访问者模式，责任链模式

ChainOfResponsibilityPattern/ChainOfResponsibilityPattern.cpp

@@ -0,0 +1,75 @@
+#include <iostream>
+using namespace std;
+
+class Handle {
+public:
+    virtual ~Handle() { }
+
+    virtual void HandleRequest() = 0;
+
+    void SetSuccessor(Handle *succ) {
+        _succ = succ;
+    }
+
+    Handle* GetSuccessor()const {
+        return _succ;
+    }
+
+protected:
+    Handle() { _succ = nullptr; }
+
+    Handle(Handle* succ) {
+        _succ = succ;
+    }
+private:
+    Handle* _succ;
+};
+
+class ConcreteHandleA :public Handle {
+public:
+    ConcreteHandleA() { }
+
+    ConcreteHandleA(Handle* succ)
+        :Handle(succ) {
+    }
+
+    void HandleRequest() {
+        if (this->GetSuccessor() != 0) {
+            cout << "ConcreteHandleA--Successor" << endl;
+            GetSuccessor()->HandleRequest();
+        }
+        else {
+            cout << "ConcreteHandleA::HandleRequest" << endl;
+        }
+    }
+};
+
+class ConcreteHandleB :public Handle {
+public:
+    ConcreteHandleB() { }
+
+    ConcreteHandleB(Handle* succ)
+        :Handle(succ) {
+    }
+
+    void HandleRequest() {
+        if (this->GetSuccessor() != 0) {
+            cout << "ConcreteHandleB--Successor" << endl;
+            GetSuccessor()->HandleRequest();
+        }
+        else {
+            cout << "ConcreteHandleB::HandleRequest" << endl;
+        }
+    }
+};
+
+int main() {
+    Handle *h1 = new ConcreteHandleA();
+    Handle *h2 = new ConcreteHandleB(h1);// or h1->SetSuccessor(h2);
+    h2->HandleRequest();
+
+    delete h1;
+    delete h2;
+
+    return 0;
+}

ChainOfResponsibilityPattern/ChainOfResponsibilityPattern.vcxproj

@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{6EFCBABA-47B7-4209-A463-7D5128D46B2D}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>ChainOfResponsibilityPattern</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="ChainOfResponsibilityPattern.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

ChainOfResponsibilityPattern/ChainOfResponsibilityPattern.vcxproj.filters

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="ChainOfResponsibilityPattern.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>

DesignPattern.sln

@@ -41,6 +41,10 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "MediatorPattern", "Mediator
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "CommandPattern", "CommandPattern\CommandPattern.vcxproj", "{53075450-8586-433A-8624-99EAC58E22AD}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "VisitorPattern", "VisitorPattern\VisitorPattern.vcxproj", "{EFF4AD49-9352-47FD-99CE-CF6E91F8DA7D}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ChainOfResponsibilityPattern", "ChainOfResponsibilityPattern\ChainOfResponsibilityPattern.vcxproj", "{6EFCBABA-47B7-4209-A463-7D5128D46B2D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -123,6 +127,14 @@ Global
 		{53075450-8586-433A-8624-99EAC58E22AD}.Debug|Win32.Build.0 = Debug|Win32
 		{53075450-8586-433A-8624-99EAC58E22AD}.Release|Win32.ActiveCfg = Release|Win32
 		{53075450-8586-433A-8624-99EAC58E22AD}.Release|Win32.Build.0 = Release|Win32
+		{EFF4AD49-9352-47FD-99CE-CF6E91F8DA7D}.Debug|Win32.ActiveCfg = Debug|Win32
+		{EFF4AD49-9352-47FD-99CE-CF6E91F8DA7D}.Debug|Win32.Build.0 = Debug|Win32
+		{EFF4AD49-9352-47FD-99CE-CF6E91F8DA7D}.Release|Win32.ActiveCfg = Release|Win32
+		{EFF4AD49-9352-47FD-99CE-CF6E91F8DA7D}.Release|Win32.Build.0 = Release|Win32
+		{6EFCBABA-47B7-4209-A463-7D5128D46B2D}.Debug|Win32.ActiveCfg = Debug|Win32
+		{6EFCBABA-47B7-4209-A463-7D5128D46B2D}.Debug|Win32.Build.0 = Debug|Win32
+		{6EFCBABA-47B7-4209-A463-7D5128D46B2D}.Release|Win32.ActiveCfg = Release|Win32
+		{6EFCBABA-47B7-4209-A463-7D5128D46B2D}.Release|Win32.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

VisitorPattern/Element.cpp

@@ -0,0 +1,19 @@
+#include "Element.h"
+#include <iostream>
+using namespace std;
+
+Element::Element() {
+}
+
+Element::~Element() {
+}
+
+void ConcreteElementA::Accept(Visitor* vis) {
+    vis->VisitConcreteElementA(this);
+    cout << "visiting ConcreteElementA..." << endl;
+}
+
+void ConcreteElementB::Accept(Visitor* vis) {
+    vis->VisitConcreteElementB(this);
+    cout << "visiting ConcreteElementA..." << endl;
+}

VisitorPattern/Element.h

@@ -0,0 +1,20 @@
+#pragma once
+#include "Visitor.h"
+class Visitor;
+
+class Element {
+public:
+    Element();
+    virtual ~Element();
+    virtual void Accept(Visitor* vis) = 0;
+};
+
+class ConcreteElementA :public Element {
+public:
+    void Accept(Visitor* vis);
+};
+
+class ConcreteElementB :public Element {
+public:
+    void Accept(Visitor* vis);
+};

VisitorPattern/Visitor.cpp

@@ -0,0 +1,26 @@
+#include "Visitor.h"
+#include <iostream>
+using namespace std;
+
+Visitor::Visitor() {
+}
+
+Visitor::~Visitor() {
+}
+
+void ConcreteVisitorA::VisitConcreteElementA(Element* elm) {
+    cout << "i will visit ConcreteElementA..." << endl;
+}
+
+void ConcreteVisitorA::VisitConcreteElementB(Element* elm) {
+    cout << "i will visit ConcreteElementB..." << endl;
+}
+
+void ConcreteVisitorB::VisitConcreteElementA(Element* elm) {
+    cout << "i will visit ConcreteElementA..." << endl;
+}
+
+void ConcreteVisitorB::VisitConcreteElementB(Element* elm) {
+    cout << "i will visit ConcreteElementB..." << endl;
+
+}

VisitorPattern/Visitor.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include "Element.h"
+class Element;
+
+class Visitor {
+public:
+    virtual ~Visitor();
+
+    virtual void VisitConcreteElementA(Element* elm) = 0;
+    virtual void VisitConcreteElementB(Element* elm) = 0;
+protected:
+    Visitor();
+};
+
+class ConcreteVisitorA :public Visitor {
+public:
+    void VisitConcreteElementA(Element* elm);
+    void VisitConcreteElementB(Element* elm);
+};
+
+class ConcreteVisitorB :public Visitor {
+public:
+    void VisitConcreteElementA(Element* elm);
+    void VisitConcreteElementB(Element* elm);
+};

VisitorPattern/VisitorPattern.cpp

@@ -0,0 +1,15 @@
+#include <iostream>
+#include "Element.h"
+#include "Visitor.h"
+using namespace std;
+
+int main() {
+    Visitor *vis = new ConcreteVisitorA();
+    Element *elm = new ConcreteElementA();
+    elm->Accept(vis);
+
+    delete elm;
+    delete vis;
+
+    return 0;
+}

VisitorPattern/VisitorPattern.vcxproj

@@ -0,0 +1,90 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{EFF4AD49-9352-47FD-99CE-CF6E91F8DA7D}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>VisitorPattern</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="Element.cpp" />
+    <ClCompile Include="Visitor.cpp" />
+    <ClCompile Include="VisitorPattern.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Element.h" />
+    <ClInclude Include="Visitor.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

VisitorPattern/VisitorPattern.vcxproj.filters

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
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+      <Filter>源文件</Filter>
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+    <ClCompile Include="Element.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
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+    <ClInclude Include="Visitor.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+    <ClInclude Include="Element.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>