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Re-template json_pointer on string type (#3415)

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* Make exception context optional

Change exception context parameter to pointer and replace context with
nullptr where appropriate.

* Support escaping other string types

* Add string concatenation function

Add variadic concat() function for concatenating char *, char, and
string types.

* Replace string concatenations using + with concat()

* Template json_pointer on string type

Change json_pointer from being templated on basic_json to being
templated on string type.

* Add unit test for #3388

Closes #3388.

* Fix regression test for #2958

* Add backwards compatibility with json_pointer<basic_json>

* Update json_pointer docs

* Allow comparing different json_pointers

* Update version numbers
This commit is contained in:
Florian Albrechtskirchinger
2022-04-12 14:18:16 +02:00
committed by GitHub
parent 1deeb434c6
commit 616caea27a
28 changed files with 1638 additions and 784 deletions
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19
doc/mkdocs/docs/api/json_pointer/index.md
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@@ -1,7 +1,7 @@
# <small>nlohmann::</small>json_pointer
```cpp
template<typename BasicJsonType>
template<typename RefStringType>
class json_pointer;
```
@@ -11,14 +11,18 @@ are the base for JSON patches.
## Template parameters
`BasicJsonType`
: a specialization of [`basic_json`](../basic_json/index.md)
`RefStringType`
: the string type used for the reference tokens making up the JSON pointer
## Notes
For backwards compatibility `RefStringType` may also be a specialization of [`basic_json`](../basic_json/index.md) in which case `string_t` will be deduced as [`basic_json::string_t`](../basic_json/string_t.md). This feature is deprecated and may be removed in a future major version.
## Member functions
- [(constructor)](json_pointer.md)
- [**to_string**](to_string.md) - return a string representation of the JSON pointer
- [**operator std::string**](operator_string.md) - return a string representation of the JSON pointer
- [**operator string_t**](operator_string.md) - return a string representation of the JSON pointer
- [**operator/=**](operator_slasheq.md) - append to the end of the JSON pointer
- [**operator/**](operator_slash.md) - create JSON Pointer by appending
- [**parent_pointer**](parent_pointer.md) - returns the parent of this JSON pointer
@@ -27,6 +31,10 @@ are the base for JSON patches.
- [**push_back**](push_back.md) - append an unescaped token at the end of the pointer
- [**empty**](empty.md) - return whether pointer points to the root document
## Member types
- [**string_t**](string_t.md) - the string type used for the reference tokens
## See also
- [operator""_json_pointer](../basic_json/operator_literal_json_pointer.md) - user-defined string literal for JSON pointers
@@ -34,4 +42,5 @@ are the base for JSON patches.
## Version history
Added in version 2.0.0.
- Added in version 2.0.0.
- Changed template parameter from `basic_json` to string type in version 3.11.0.