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Merge pull request #1769 from chris0x44/json_pointer

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Make json_pointer::back const (resolves #1764)
This commit is contained in:
Niels Lohmann
2019-10-03 10:35:34 +02:00
committed by GitHub
parent d826282f53 7476f5ee0c
commit dae0fe79af
3 changed files with 6 additions and 2 deletions
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2
include/nlohmann/detail/json_pointer.hpp
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@@ -267,7 +267,7 @@ class json_pointer
@since version 3.6.0
*/
const std::string& back()
const std::string& back() const
{
if (JSON_HEDLEY_UNLIKELY(empty()))
{

2
single_include/nlohmann/json.hpp
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@@ -10232,7 +10232,7 @@ class json_pointer
@since version 3.6.0
*/
const std::string& back()
const std::string& back() const
{
if (JSON_HEDLEY_UNLIKELY(empty()))
{

4
test/src/unit-json_pointer.cpp
View File

@@ -559,6 +559,10 @@ TEST_CASE("JSON pointers")
CHECK(!ptr.empty());
CHECK(j[ptr] == j["answer"]["everything"]);
// check access via const pointer
const auto cptr = ptr;
CHECK(cptr.back() == "everything");
ptr.pop_back();
ptr.pop_back();
CHECK(ptr.empty());