54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
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#include "rapidjson/reader.h"
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#include <iostream>
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#include <sstream>
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using namespace rapidjson;
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using namespace std;
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// If you can require C++11, you could use std::to_string here
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template <typename T> std::string stringify(T x) {
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std::stringstream ss;
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ss << x;
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return ss.str();
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}
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struct MyHandler {
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const char* type;
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std::string data;
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MyHandler() : type(), data() {}
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bool Null() { type = "Null"; data.clear(); return true; }
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bool Bool(bool b) { type = "Bool:"; data = b? "true": "false"; return true; }
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bool Int(int i) { type = "Int:"; data = stringify(i); return true; }
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bool Uint(unsigned u) { type = "Uint:"; data = stringify(u); return true; }
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bool Int64(int64_t i) { type = "Int64:"; data = stringify(i); return true; }
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bool Uint64(uint64_t u) { type = "Uint64:"; data = stringify(u); return true; }
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bool Double(double d) { type = "Double:"; data = stringify(d); return true; }
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bool RawNumber(const char* str, SizeType length, bool) { type = "Number:"; data = std::string(str, length); return true; }
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bool String(const char* str, SizeType length, bool) { type = "String:"; data = std::string(str, length); return true; }
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bool StartObject() { type = "StartObject"; data.clear(); return true; }
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bool Key(const char* str, SizeType length, bool) { type = "Key:"; data = std::string(str, length); return true; }
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bool EndObject(SizeType memberCount) { type = "EndObject:"; data = stringify(memberCount); return true; }
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bool StartArray() { type = "StartArray"; data.clear(); return true; }
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bool EndArray(SizeType elementCount) { type = "EndArray:"; data = stringify(elementCount); return true; }
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private:
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MyHandler(const MyHandler& noCopyConstruction);
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MyHandler& operator=(const MyHandler& noAssignment);
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};
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int main() {
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const char json[] = " { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ";
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MyHandler handler;
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Reader reader;
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StringStream ss(json);
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reader.IterativeParseInit();
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while (!reader.IterativeParseComplete()) {
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reader.IterativeParseNext<kParseDefaultFlags>(ss, handler);
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cout << handler.type << handler.data << endl;
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}
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return 0;
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}
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