deploy: 58f5f25968

examples/diagnostic_positions.cpp

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+#include <iostream>
+
+#define JSON_DIAGNOSTIC_POSITIONS 1
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    std::string json_string = R"(
+    {
+        "address": {
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+    }
+    )";
+    json j = json::parse(json_string);
+
+    std::cout << "Root diagnostic positions: \n";
+    std::cout << "\tstart_pos: " << j.start_pos() << '\n';
+    std::cout << "\tend_pos:" << j.end_pos() << "\n";
+    std::cout << "Original string: \n";
+    std::cout << "{\n        \"address\": {\n            \"street\": \"Fake Street\",\n            \"housenumber\": 1\n        }\n    }" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j.start_pos(), j.end_pos() - j.start_pos()) << "\n\n";
+
+    std::cout << "address diagnostic positions: \n";
+    std::cout << "\tstart_pos:" << j["address"].start_pos() << '\n';
+    std::cout << "\tend_pos:" << j["address"].end_pos() << "\n\n";
+    std::cout << "Original string: \n";
+    std::cout << "{            \"street\": \"Fake Street\",\n            \"housenumber\": 1\n        }" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j["address"].start_pos(), j["address"].end_pos() - j["address"].start_pos()) << "\n\n";
+
+    std::cout << "street diagnostic positions: \n";
+    std::cout << "\tstart_pos:" << j["address"]["street"].start_pos() << '\n';
+    std::cout << "\tend_pos:" << j["address"]["street"].end_pos() << "\n\n";
+    std::cout << "Original string: \n";
+    std::cout << "\"Fake Street\"" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j["address"]["street"].start_pos(), j["address"]["street"].end_pos() - j["address"]["street"].start_pos()) << "\n\n";
+
+    std::cout << "housenumber diagnostic positions: \n";
+    std::cout << "\tstart_pos:" << j["address"]["housenumber"].start_pos() << '\n';
+    std::cout << "\tend_pos:" << j["address"]["housenumber"].end_pos() << "\n\n";
+    std::cout << "Original string: \n";
+    std::cout << "1" << "\n";
+    std::cout << "Parsed string: \n";
+    std::cout << json_string.substr(j["address"]["housenumber"].start_pos(), j["address"]["housenumber"].end_pos() - j["address"]["housenumber"].start_pos()) << "\n\n";
+}

examples/diagnostic_positions.output

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+Root diagnostic positions: 
+	start_pos: 5
+	end_pos:109
+Original string: 
+{
+        "address": {
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+    }
+Parsed string: 
+{
+        "address": {
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+    }
+
+address diagnostic positions: 
+	start_pos:26
+	end_pos:103
+
+Original string: 
+{            "street": "Fake Street",
+            "housenumber": 1
+        }
+Parsed string: 
+{
+            "street": "Fake Street",
+            "housenumber": 1
+        }
+
+street diagnostic positions: 
+	start_pos:50
+	end_pos:63
+
+Original string: 
+"Fake Street"
+Parsed string: 
+"Fake Street"
+
+housenumber diagnostic positions: 
+	start_pos:92
+	end_pos:93
+
+Original string: 
+1
+Parsed string: 
+1
+