From e5f3eb2d7d762dde87b00231c343c8fb141007cc Mon Sep 17 00:00:00 2001
From: Florian Albrechtskirchinger <falbrechtskirchinger@gmail.com>
Date: Sat, 23 Jul 2022 19:13:09 +0200
Subject: [PATCH] Add operator<< for json_pointer

---
 include/nlohmann/detail/json_pointer.hpp | 13 +++++++++++++
 single_include/nlohmann/json.hpp         | 13 +++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/include/nlohmann/detail/json_pointer.hpp b/include/nlohmann/detail/json_pointer.hpp
index 35e1ddbc5..41d022994 100644
--- a/include/nlohmann/detail/json_pointer.hpp
+++ b/include/nlohmann/detail/json_pointer.hpp
@@ -12,6 +12,9 @@
 #include <cctype> // isdigit
 #include <cerrno> // errno, ERANGE
 #include <cstdlib> // strtoull
+#ifndef JSON_NO_IO
+    #include <iosfwd> // ostream
+#endif  // JSON_NO_IO
 #include <limits> // max
 #include <numeric> // accumulate
 #include <string> // string
@@ -80,6 +83,16 @@ class json_pointer
         return to_string();
     }
 
+#ifndef JSON_NO_IO
+    /// @brief write string representation of the JSON pointer to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const json_pointer& ptr)
+    {
+        o << ptr.to_string();
+        return o;
+    }
+#endif
+
     /// @brief append another JSON pointer at the end of this JSON pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
     json_pointer& operator/=(const json_pointer& ptr)
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index dd9c39fb5..b1efc7697 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -13455,6 +13455,9 @@ class json_reverse_iterator : public std::reverse_iterator<Base>
 #include <cctype> // isdigit
 #include <cerrno> // errno, ERANGE
 #include <cstdlib> // strtoull
+#ifndef JSON_NO_IO
+    #include <iosfwd> // ostream
+#endif  // JSON_NO_IO
 #include <limits> // max
 #include <numeric> // accumulate
 #include <string> // string
@@ -13528,6 +13531,16 @@ class json_pointer
         return to_string();
     }
 
+#ifndef JSON_NO_IO
+    /// @brief write string representation of the JSON pointer to stream
+    /// @sa https://json.nlohmann.me/api/basic_json/operator_ltlt/
+    friend std::ostream& operator<<(std::ostream& o, const json_pointer& ptr)
+    {
+        o << ptr.to_string();
+        return o;
+    }
+#endif
+
     /// @brief append another JSON pointer at the end of this JSON pointer
     /// @sa https://json.nlohmann.me/api/json_pointer/operator_slasheq/
     json_pointer& operator/=(const json_pointer& ptr)