Add front methods to json_pointers (implements #4889) (#5152)

* Added front, pop_front, and push_front methods to json_pointers in order to facilitate root-to-leaf traversals of JSON object trees. (#4889) Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com> * undid VS autoformatting in irrelevant code Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com> * Ran make amalgamate, added navigation to json_pointer's new front methods in mkdocs, and fixed errors in documented complexity for those methods. Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com> * Fixed GCC 4.8 compile error caused by const iterators Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com> * Fixed another gcc-4.8 compile error Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com> * amalgamated Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com> --------- Signed-off-by: trdesilva <5818730+trdesilva@users.noreply.github.com>
2026-06-21 03:34:17 +00:00 · 2026-05-12 22:59:16 -07:00
parent 216c50365e
commit a0a4e7cc0b
14 changed files with 274 additions and 2 deletions
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // different JSON Pointers
+    json::json_pointer ptr1("/foo");
+    json::json_pointer ptr2("/foo/0");
+
+    // call empty()
+    std::cout << "first reference token of \"" << ptr1 << "\" is \"" << ptr1.front() << "\"\n"
+              << "first reference token of \"" << ptr2 << "\" is \"" << ptr2.front() << "\"" << std::endl;
+}