add traverse as pointer example

example/traverseaspointer.cpp

@@ -0,0 +1,39 @@
+#include "rapidjson/document.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/pointer.h"
+#include "rapidjson/stringbuffer.h"
+#include <iostream>
+
+using namespace rapidjson;
+
+void traverse(const Value& v, const Pointer& p) {
+    StringBuffer sb;
+    p.Stringify(sb);
+    std::cout << sb.GetString() << std::endl;
+
+    switch (v.GetType()) {
+    case kArrayType:
+        for (SizeType i = 0; i != v.Size(); ++i)
+            traverse(v[i], p.Append(i));
+        break;
+    case kObjectType:
+        for (Value::ConstMemberIterator m = v.MemberBegin(); m != v.MemberEnd(); ++m) 
+            traverse(m->value, p.Append(m->name.GetString(), m->name.GetStringLength()));
+        break;
+    default:
+        break;
+    }
+}
+
+int main(int, char*[]) {
+    char readBuffer[65536];
+    FileReadStream is(stdin, readBuffer, sizeof(readBuffer));
+
+    Document d;
+    d.ParseStream(is);
+
+    Pointer root;
+    traverse(d, root);
+
+    return 0;
+}