first commit

third_party/socket.io-client-cpp/lib/rapidjson/example/CMakeLists.txt

@@ -0,0 +1,29 @@
+# Copyright (c) 2011 Milo Yip (miloyip@gmail.com)
+# Copyright (c) 2013 Rafal Jeczalik (rjeczalik@gmail.com)
+# Distributed under the MIT License (see license.txt file)
+
+set(EXAMPLES
+    capitalize
+    condense
+    messagereader
+    pretty
+    prettyauto
+    serialize
+    simpledom
+    simplereader
+    simplewriter
+    tutorial)
+
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -Wall -Wextra -Weffc++ -Wswitch-default")
+elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -Wall -Wextra -Weffc++ -Wswitch-default")
+elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
+    add_definitions(-D_CRT_SECURE_NO_WARNINGS=1)
+endif()
+
+foreach (example ${EXAMPLES})
+    add_executable(${example} ${example}/${example}.cpp)
+endforeach()
+
+add_custom_target(examples ALL DEPENDS ${EXAMPLES})

third_party/socket.io-client-cpp/lib/rapidjson/example/capitalize/capitalize.cpp

@@ -0,0 +1,66 @@
+// JSON condenser exmaple
+
+// This example parses JSON from stdin with validation, 
+// and re-output the JSON content to stdout with all string capitalized, and without whitespace.
+
+#include "rapidjson/reader.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/filewritestream.h"
+#include "rapidjson/error/en.h"
+#include <vector>
+#include <cctype>
+
+using namespace rapidjson;
+
+template<typename OutputHandler>
+struct CapitalizeFilter {
+    CapitalizeFilter(OutputHandler& out) : out_(out), buffer_() {}
+
+    bool Null() { return out_.Null(); }
+    bool Bool(bool b) { return out_.Bool(b); }
+    bool Int(int i) { return out_.Int(i); }
+    bool Uint(unsigned u) { return out_.Uint(u); }
+    bool Int64(int64_t i) { return out_.Int64(i); }
+    bool Uint64(uint64_t u) { return out_.Uint64(u); }
+    bool Double(double d) { return out_.Double(d); }
+    bool String(const char* str, SizeType length, bool) { 
+        buffer_.clear();
+        for (SizeType i = 0; i < length; i++)
+            buffer_.push_back(std::toupper(str[i]));
+        return out_.String(&buffer_.front(), length, true); // true = output handler need to copy the string
+    }
+    bool StartObject() { return out_.StartObject(); }
+    bool Key(const char* str, SizeType length, bool copy) { return String(str, length, copy); }
+    bool EndObject(SizeType memberCount) { return out_.EndObject(memberCount); }
+    bool StartArray() { return out_.StartArray(); }
+    bool EndArray(SizeType elementCount) { return out_.EndArray(elementCount); }
+
+    OutputHandler& out_;
+    std::vector<char> buffer_;
+
+private:
+    CapitalizeFilter(const CapitalizeFilter&);
+    CapitalizeFilter& operator=(const CapitalizeFilter&);
+};
+
+int main(int, char*[]) {
+    // Prepare JSON reader and input stream.
+    Reader reader;
+    char readBuffer[65536];
+    FileReadStream is(stdin, readBuffer, sizeof(readBuffer));
+
+    // Prepare JSON writer and output stream.
+    char writeBuffer[65536];
+    FileWriteStream os(stdout, writeBuffer, sizeof(writeBuffer));
+    Writer<FileWriteStream> writer(os);
+
+    // JSON reader parse from the input stream and let writer generate the output.
+    CapitalizeFilter<Writer<FileWriteStream> > filter(writer);
+    if (!reader.Parse(is, filter)) {
+        fprintf(stderr, "\nError(%u): %s\n", (unsigned)reader.GetErrorOffset(), GetParseError_En(reader.GetParseErrorCode()));
+        return 1;
+    }
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/condense/condense.cpp

@@ -0,0 +1,32 @@
+// JSON condenser exmaple
+
+// This example parses JSON text from stdin with validation, 
+// and re-output the JSON content to stdout without whitespace.
+
+#include "rapidjson/reader.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/filewritestream.h"
+#include "rapidjson/error/en.h"
+
+using namespace rapidjson;
+
+int main(int, char*[]) {
+    // Prepare JSON reader and input stream.
+    Reader reader;
+    char readBuffer[65536];
+    FileReadStream is(stdin, readBuffer, sizeof(readBuffer));
+
+    // Prepare JSON writer and output stream.
+    char writeBuffer[65536];
+    FileWriteStream os(stdout, writeBuffer, sizeof(writeBuffer));
+    Writer<FileWriteStream> writer(os);
+
+    // JSON reader parse from the input stream and let writer generate the output.
+    if (!reader.Parse(is, writer)) {
+        fprintf(stderr, "\nError(%u): %s\n", (unsigned)reader.GetErrorOffset(), GetParseError_En(reader.GetParseErrorCode()));
+        return 1;
+    }
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/messagereader/messagereader.cpp

@@ -0,0 +1,96 @@
+// Reading a message JSON with Reader (SAX-style API).
+// The JSON should be an object with key-string pairs.
+
+#include "rapidjson/reader.h"
+#include "rapidjson/error/en.h"
+#include <iostream>
+#include <string>
+#include <map>
+
+using namespace std;
+using namespace rapidjson;
+
+typedef map<string, string> MessageMap;
+
+#if defined(__GNUC__)
+RAPIDJSON_DIAG_PUSH
+RAPIDJSON_DIAG_OFF(effc++)
+#endif
+
+struct MessageHandler
+    : public BaseReaderHandler<UTF8<>, MessageHandler> {
+    MessageHandler() : messages_(), state_(kExpectObjectStart), name_() {}
+
+    bool StartObject() {
+        switch (state_) {
+        case kExpectObjectStart:
+            state_ = kExpectNameOrObjectEnd;
+            return true;
+        default:
+            return false;
+        }
+    }
+
+    bool String(const char* str, SizeType length, bool) {
+        switch (state_) {
+        case kExpectNameOrObjectEnd:
+            name_ = string(str, length);
+            state_ = kExpectValue;
+            return true;
+        case kExpectValue:
+            messages_.insert(MessageMap::value_type(name_, string(str, length)));
+            state_ = kExpectNameOrObjectEnd;
+            return true;
+        default:
+            return false;
+        }
+    }
+
+    bool EndObject(SizeType) { return state_ == kExpectNameOrObjectEnd; }
+
+    bool Default() { return false; } // All other events are invalid.
+
+    MessageMap messages_;
+    enum State {
+        kExpectObjectStart,
+        kExpectNameOrObjectEnd,
+        kExpectValue,
+    }state_;
+    std::string name_;
+};
+
+#if defined(__GNUC__)
+RAPIDJSON_DIAG_POP
+#endif
+
+void ParseMessages(const char* json, MessageMap& messages) {
+    Reader reader;
+    MessageHandler handler;
+    StringStream ss(json);
+    if (reader.Parse(ss, handler))
+        messages.swap(handler.messages_);   // Only change it if success.
+    else {
+        ParseErrorCode e = reader.GetParseErrorCode();
+        size_t o = reader.GetErrorOffset();
+        cout << "Error: " << GetParseError_En(e) << endl;;
+        cout << " at offset " << o << " near '" << string(json).substr(o, 10) << "...'" << endl;
+    }
+}
+
+int main() {
+    MessageMap messages;
+
+    const char* json1 = "{ \"greeting\" : \"Hello!\", \"farewell\" : \"bye-bye!\" }";
+    cout << json1 << endl;
+    ParseMessages(json1, messages);
+
+    for (MessageMap::const_iterator itr = messages.begin(); itr != messages.end(); ++itr)
+        cout << itr->first << ": " << itr->second << endl;
+
+    cout << endl << "Parse a JSON with invalid schema." << endl;
+    const char* json2 = "{ \"greeting\" : \"Hello!\", \"farewell\" : \"bye-bye!\", \"foo\" : {} }";
+    cout << json2 << endl;
+    ParseMessages(json2, messages);
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/pretty/pretty.cpp

@@ -0,0 +1,30 @@
+// JSON pretty formatting example
+// This example can only handle UTF-8. For handling other encodings, see prettyauto example.
+
+#include "rapidjson/reader.h"
+#include "rapidjson/prettywriter.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/filewritestream.h"
+#include "rapidjson/error/en.h"
+
+using namespace rapidjson;
+
+int main(int, char*[]) {
+    // Prepare reader and input stream.
+    Reader reader;
+    char readBuffer[65536];
+    FileReadStream is(stdin, readBuffer, sizeof(readBuffer));
+
+    // Prepare writer and output stream.
+    char writeBuffer[65536];
+    FileWriteStream os(stdout, writeBuffer, sizeof(writeBuffer));
+    PrettyWriter<FileWriteStream> writer(os);
+
+    // JSON reader parse from the input stream and let writer generate the output.
+    if (!reader.Parse<kParseValidateEncodingFlag>(is, writer)) {
+        fprintf(stderr, "\nError(%u): %s\n", (unsigned)reader.GetErrorOffset(), GetParseError_En(reader.GetParseErrorCode()));
+        return 1;
+    }
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/prettyauto/prettyauto.cpp

@@ -0,0 +1,56 @@
+// JSON pretty formatting example
+// This example can handle UTF-8/UTF-16LE/UTF-16BE/UTF-32LE/UTF-32BE.
+// The input firstly convert to UTF8, and then write to the original encoding with pretty formatting.
+
+#include "rapidjson/reader.h"
+#include "rapidjson/prettywriter.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/filewritestream.h"
+#include "rapidjson/encodedstream.h"    // NEW
+#include "rapidjson/error/en.h"
+#ifdef _WIN32
+#include <fcntl.h>
+#include <io.h>
+#endif
+
+using namespace rapidjson;
+
+int main(int, char*[]) {
+#ifdef _WIN32
+    // Prevent Windows converting between CR+LF and LF
+    _setmode(_fileno(stdin), _O_BINARY);    // NEW
+    _setmode(_fileno(stdout), _O_BINARY);   // NEW
+#endif
+
+    // Prepare reader and input stream.
+    //Reader reader;
+    GenericReader<AutoUTF<unsigned>, UTF8<> > reader;       // CHANGED
+    char readBuffer[65536];
+    FileReadStream is(stdin, readBuffer, sizeof(readBuffer));
+    AutoUTFInputStream<unsigned, FileReadStream> eis(is);   // NEW
+
+    // Prepare writer and output stream.
+    char writeBuffer[65536];
+    FileWriteStream os(stdout, writeBuffer, sizeof(writeBuffer));
+
+#if 1
+    // Use the same Encoding of the input. Also use BOM according to input.
+    typedef AutoUTFOutputStream<unsigned, FileWriteStream> OutputStream;    // NEW
+    OutputStream eos(os, eis.GetType(), eis.HasBOM());                      // NEW
+    PrettyWriter<OutputStream, UTF8<>, AutoUTF<unsigned> > writer(eos);     // CHANGED
+#else
+    // You may also use static bound encoding type, such as output to UTF-16LE with BOM
+    typedef EncodedOutputStream<UTF16LE<>,FileWriteStream> OutputStream;    // NEW
+    OutputStream eos(os, true);                                             // NEW
+    PrettyWriter<OutputStream, UTF8<>, UTF16LE<> > writer(eos);             // CHANGED
+#endif
+
+    // JSON reader parse from the input stream and let writer generate the output.
+    //if (!reader.Parse<kParseValidateEncodingFlag>(is, writer)) {
+    if (!reader.Parse<kParseValidateEncodingFlag>(eis, writer)) {   // CHANGED
+        fprintf(stderr, "\nError(%u): %s\n", (unsigned)reader.GetErrorOffset(), GetParseError_En(reader.GetParseErrorCode()));
+        return 1;
+    }
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/serialize/serialize.cpp

@@ -0,0 +1,156 @@
+// Serialize example
+// This example shows writing JSON string with writer directly.
+
+#include "rapidjson/prettywriter.h" // for stringify JSON
+#include "rapidjson/filestream.h"   // wrapper of C stream for prettywriter as output
+#include <cstdio>
+#include <string>
+#include <vector>
+
+using namespace rapidjson;
+
+class Person {
+public:
+    Person(const std::string& name, unsigned age) : name_(name), age_(age) {}
+    virtual ~Person();
+
+protected:
+    template <typename Writer>
+    void Serialize(Writer& writer) const {
+        // This base class just write out name-value pairs, without wrapping within an object.
+        writer.String("name");
+#ifdef RAPIDJSON_HAS_STDSTRING
+        writer.String(name_);
+#else
+        writer.String(name_.c_str(), (SizeType)name_.length()); // Supplying length of string is faster.
+#endif
+        writer.String("age");
+        writer.Uint(age_);
+    }
+
+private:
+    std::string name_;
+    unsigned age_;
+};
+
+Person::~Person() {
+}
+
+class Education {
+public:
+    Education(const std::string& school, double GPA) : school_(school), GPA_(GPA) {}
+
+    template <typename Writer>
+    void Serialize(Writer& writer) const {
+        writer.StartObject();
+        
+        writer.String("school");
+#ifdef RAPIDJSON_HAS_STDSTRING
+        writer.String(school_);
+#else
+        writer.String(school_.c_str(), (SizeType)school_.length());
+#endif
+
+        writer.String("GPA");
+        writer.Double(GPA_);
+
+        writer.EndObject();
+    }
+
+private:
+    std::string school_;
+    double GPA_;
+};
+
+class Dependent : public Person {
+public:
+    Dependent(const std::string& name, unsigned age, Education* education = 0) : Person(name, age), education_(education) {}
+    Dependent(const Dependent& rhs) : Person(rhs), education_(0) { education_ = (rhs.education_ == 0) ? 0 : new Education(*rhs.education_); }
+    virtual ~Dependent();
+
+    Dependent& operator=(const Dependent& rhs) {
+        if (this == &rhs)
+            return *this;
+        delete education_;
+        education_ = (rhs.education_ == 0) ? 0 : new Education(*rhs.education_);
+        return *this;
+    }
+
+    template <typename Writer>
+    void Serialize(Writer& writer) const {
+        writer.StartObject();
+
+        Person::Serialize(writer);
+
+        writer.String("education");
+        if (education_)
+            education_->Serialize(writer);
+        else
+            writer.Null();
+
+        writer.EndObject();
+    }
+
+private:
+
+    Education *education_;
+};
+
+Dependent::~Dependent() {
+    delete education_; 
+}
+
+class Employee : public Person {
+public:
+    Employee(const std::string& name, unsigned age, bool married) : Person(name, age), dependents_(), married_(married) {}
+    virtual ~Employee();
+
+    void AddDependent(const Dependent& dependent) {
+        dependents_.push_back(dependent);
+    }
+
+    template <typename Writer>
+    void Serialize(Writer& writer) const {
+        writer.StartObject();
+
+        Person::Serialize(writer);
+
+        writer.String("married");
+        writer.Bool(married_);
+
+        writer.String(("dependents"));
+        writer.StartArray();
+        for (std::vector<Dependent>::const_iterator dependentItr = dependents_.begin(); dependentItr != dependents_.end(); ++dependentItr)
+            dependentItr->Serialize(writer);
+        writer.EndArray();
+
+        writer.EndObject();
+    }
+
+private:
+    std::vector<Dependent> dependents_;
+    bool married_;
+};
+
+Employee::~Employee() {
+}
+
+int main(int, char*[]) {
+    std::vector<Employee> employees;
+
+    employees.push_back(Employee("Milo YIP", 34, true));
+    employees.back().AddDependent(Dependent("Lua YIP", 3, new Education("Happy Kindergarten", 3.5)));
+    employees.back().AddDependent(Dependent("Mio YIP", 1));
+
+    employees.push_back(Employee("Percy TSE", 30, false));
+
+    FileStream s(stdout);
+    PrettyWriter<FileStream> writer(s);     // Can also use Writer for condensed formatting
+
+    writer.StartArray();
+    for (std::vector<Employee>::const_iterator employeeItr = employees.begin(); employeeItr != employees.end(); ++employeeItr)
+        employeeItr->Serialize(writer);
+    writer.EndArray();
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/simpledom/simpledom.cpp

@@ -0,0 +1,29 @@
+// JSON simple example
+// This example does not handle errors.
+
+#include "rapidjson/document.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/stringbuffer.h"
+#include <iostream>
+
+using namespace rapidjson;
+
+int main() {
+    // 1. Parse a JSON string into DOM.
+    const char* json = "{\"project\":\"rapidjson\",\"stars\":10}";
+    Document d;
+    d.Parse(json);
+
+    // 2. Modify it by DOM.
+    Value& s = d["stars"];
+    s.SetInt(s.GetInt() + 1);
+
+    // 3. Stringify the DOM
+    StringBuffer buffer;
+    Writer<StringBuffer> writer(buffer);
+    d.Accept(writer);
+
+    // Output {"project":"rapidjson","stars":11}
+    std::cout << buffer.GetString() << std::endl;
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/simplereader/simplereader.cpp

@@ -0,0 +1,38 @@
+#include "rapidjson/reader.h"
+#include <iostream>
+
+using namespace rapidjson;
+using namespace std;
+
+struct MyHandler {
+    bool Null() { cout << "Null()" << endl; return true; }
+    bool Bool(bool b) { cout << "Bool(" << boolalpha << b << ")" << endl; return true; }
+    bool Int(int i) { cout << "Int(" << i << ")" << endl; return true; }
+    bool Uint(unsigned u) { cout << "Uint(" << u << ")" << endl; return true; }
+    bool Int64(int64_t i) { cout << "Int64(" << i << ")" << endl; return true; }
+    bool Uint64(uint64_t u) { cout << "Uint64(" << u << ")" << endl; return true; }
+    bool Double(double d) { cout << "Double(" << d << ")" << endl; return true; }
+    bool String(const char* str, SizeType length, bool copy) { 
+        cout << "String(" << str << ", " << length << ", " << boolalpha << copy << ")" << endl;
+        return true;
+    }
+    bool StartObject() { cout << "StartObject()" << endl; return true; }
+    bool Key(const char* str, SizeType length, bool copy) {
+        cout << "Key(" << str << ", " << length << ", " << boolalpha << copy << ")" << endl;
+        return true;
+    }
+    bool EndObject(SizeType memberCount) { cout << "EndObject(" << memberCount << ")" << endl; return true; }
+    bool StartArray() { cout << "StartArray()" << endl; return true; }
+    bool EndArray(SizeType elementCount) { cout << "EndArray(" << elementCount << ")" << endl; return true; }
+};
+
+int main() {
+    const char json[] = " { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ";
+
+    MyHandler handler;
+    Reader reader;
+    StringStream ss(json);
+    reader.Parse(ss, handler);
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/simplewriter/simplewriter.cpp

@@ -0,0 +1,35 @@
+#include "rapidjson/writer.h"
+#include "rapidjson/stringbuffer.h"
+#include <iostream>
+
+using namespace rapidjson;
+using namespace std;
+
+int main() {
+    StringBuffer s;
+    Writer<StringBuffer> writer(s);
+    
+    writer.StartObject();
+    writer.String("hello");
+    writer.String("world");
+    writer.String("t");
+    writer.Bool(true);
+    writer.String("f");
+    writer.Bool(false);
+    writer.String("n");
+    writer.Null();
+    writer.String("i");
+    writer.Uint(123);
+    writer.String("pi");
+    writer.Double(3.1416);
+    writer.String("a");
+    writer.StartArray();
+    for (unsigned i = 0; i < 4; i++)
+        writer.Uint(i);
+    writer.EndArray();
+    writer.EndObject();
+
+    cout << s.GetString() << endl;
+
+    return 0;
+}

third_party/socket.io-client-cpp/lib/rapidjson/example/tutorial/tutorial.cpp

@@ -0,0 +1,153 @@
+// Hello World example
+// This example shows basic usage of DOM-style API.
+
+#include "rapidjson/document.h"     // rapidjson's DOM-style API
+#include "rapidjson/prettywriter.h" // for stringify JSON
+#include "rapidjson/filestream.h"   // wrapper of C stream for prettywriter as output
+#include <cstdio>
+
+using namespace rapidjson;
+using namespace std;
+
+int main(int, char*[]) {
+    ////////////////////////////////////////////////////////////////////////////
+    // 1. Parse a JSON text string to a document.
+
+    const char json[] = " { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ";
+    printf("Original JSON:\n %s\n", json);
+
+    Document document;  // Default template parameter uses UTF8 and MemoryPoolAllocator.
+
+#if 0
+    // "normal" parsing, decode strings to new buffers. Can use other input stream via ParseStream().
+    if (document.Parse(json).HasParseError())
+        return 1;
+#else
+    // In-situ parsing, decode strings directly in the source string. Source must be string.
+    {
+        char buffer[sizeof(json)];
+        memcpy(buffer, json, sizeof(json));
+        if (document.ParseInsitu(buffer).HasParseError())
+            return 1;
+    }
+#endif
+
+    printf("\nParsing to document succeeded.\n");
+
+    ////////////////////////////////////////////////////////////////////////////
+    // 2. Access values in document. 
+
+    printf("\nAccess values in document:\n");
+    assert(document.IsObject());    // Document is a JSON value represents the root of DOM. Root can be either an object or array.
+
+    assert(document.HasMember("hello"));
+    assert(document["hello"].IsString());
+    printf("hello = %s\n", document["hello"].GetString());
+
+    // Since version 0.2, you can use single lookup to check the existing of member and its value:
+    Value::MemberIterator hello = document.FindMember("hello");
+    assert(hello != document.MemberEnd());
+    assert(hello->value.IsString());
+    assert(strcmp("world", hello->value.GetString()) == 0);
+    (void)hello;
+
+    assert(document["t"].IsBool());     // JSON true/false are bool. Can also uses more specific function IsTrue().
+    printf("t = %s\n", document["t"].GetBool() ? "true" : "false");
+
+    assert(document["f"].IsBool());
+    printf("f = %s\n", document["f"].GetBool() ? "true" : "false");
+
+    printf("n = %s\n", document["n"].IsNull() ? "null" : "?");
+
+    assert(document["i"].IsNumber());   // Number is a JSON type, but C++ needs more specific type.
+    assert(document["i"].IsInt());      // In this case, IsUint()/IsInt64()/IsUInt64() also return true.
+    printf("i = %d\n", document["i"].GetInt()); // Alternative (int)document["i"]
+
+    assert(document["pi"].IsNumber());
+    assert(document["pi"].IsDouble());
+    printf("pi = %g\n", document["pi"].GetDouble());
+
+    {
+        const Value& a = document["a"]; // Using a reference for consecutive access is handy and faster.
+        assert(a.IsArray());
+        for (SizeType i = 0; i < a.Size(); i++) // rapidjson uses SizeType instead of size_t.
+            printf("a[%d] = %d\n", i, a[i].GetInt());
+        
+        int y = a[0].GetInt();
+        (void)y;
+
+        // Iterating array with iterators
+        printf("a = ");
+        for (Value::ConstValueIterator itr = a.Begin(); itr != a.End(); ++itr)
+            printf("%d ", itr->GetInt());
+        printf("\n");
+    }
+
+    // Iterating object members
+    static const char* kTypeNames[] = { "Null", "False", "True", "Object", "Array", "String", "Number" };
+    for (Value::ConstMemberIterator itr = document.MemberBegin(); itr != document.MemberEnd(); ++itr)
+        printf("Type of member %s is %s\n", itr->name.GetString(), kTypeNames[itr->value.GetType()]);
+
+    ////////////////////////////////////////////////////////////////////////////
+    // 3. Modify values in document.
+
+    // Change i to a bigger number
+    {
+        uint64_t f20 = 1;   // compute factorial of 20
+        for (uint64_t j = 1; j <= 20; j++)
+            f20 *= j;
+        document["i"] = f20;    // Alternate form: document["i"].SetUint64(f20)
+        assert(!document["i"].IsInt()); // No longer can be cast as int or uint.
+    }
+
+    // Adding values to array.
+    {
+        Value& a = document["a"];   // This time we uses non-const reference.
+        Document::AllocatorType& allocator = document.GetAllocator();
+        for (int i = 5; i <= 10; i++)
+            a.PushBack(i, allocator);   // May look a bit strange, allocator is needed for potentially realloc. We normally uses the document's.
+
+        // Fluent API
+        a.PushBack("Lua", allocator).PushBack("Mio", allocator);
+    }
+
+    // Making string values.
+
+    // This version of SetString() just store the pointer to the string.
+    // So it is for literal and string that exists within value's life-cycle.
+    {
+        document["hello"] = "rapidjson";    // This will invoke strlen()
+        // Faster version:
+        // document["hello"].SetString("rapidjson", 9);
+    }
+
+    // This version of SetString() needs an allocator, which means it will allocate a new buffer and copy the the string into the buffer.
+    Value author;
+    {
+        char buffer[10];
+        int len = sprintf(buffer, "%s %s", "Milo", "Yip");  // synthetic example of dynamically created string.
+
+        author.SetString(buffer, static_cast<size_t>(len), document.GetAllocator());
+        // Shorter but slower version:
+        // document["hello"].SetString(buffer, document.GetAllocator());
+
+        // Constructor version: 
+        // Value author(buffer, len, document.GetAllocator());
+        // Value author(buffer, document.GetAllocator());
+        memset(buffer, 0, sizeof(buffer)); // For demonstration purpose.
+    }
+    // Variable 'buffer' is unusable now but 'author' has already made a copy.
+    document.AddMember("author", author, document.GetAllocator());
+
+    assert(author.IsNull());        // Move semantic for assignment. After this variable is assigned as a member, the variable becomes null.
+
+    ////////////////////////////////////////////////////////////////////////////
+    // 4. Stringify JSON
+
+    printf("\nModified JSON with reformatting:\n");
+    FileStream f(stdout);
+    PrettyWriter<FileStream> writer(f);
+    document.Accept(writer);    // Accept() traverses the DOM and generates Handler events.
+
+    return 0;
+}