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📝 updated contribution guidelines

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Niels Lohmann 2017-05-13 11:57:15 +02:00
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16
.github/CONTRIBUTING.md vendored
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@ -14,8 +14,6 @@ Usually, all issues are tracked publicly on [Github](https://github.com/nlohmann
Please [create an issue](https://github.com/nlohmann/json/issues/new), assuming one does not already exist, and describe your concern. Note you need a [GitHub account](https://github.com/signup/free) for this.
If you want propose changes to the code, you need to download the [`re2c`](http://re2c.org) tool.
## Describe your issue
Clearly describe the issue:
@ -28,16 +26,7 @@ Clearly describe the issue:
There are currently two files which need to be edited:
1. [`src/json.hpp.re2c`](https://github.com/nlohmann/json/blob/master/src/json.hpp.re2c) (note the `.re2c` suffix) - This file contains a comment section which describes the JSON lexic. This section is translated by [`re2c`](http://re2c.org) into file [`src/json.hpp`](https://github.com/nlohmann/json/blob/master/src/json.hpp) which is plain "vanilla" C++11 code. (In fact, the generated lexer consists of some hundred lines of `goto`s, which is a hint you never want to edit this file...).
If you only edit file `src/json.hpp` (without the `.re2c` suffix), your changes will be overwritten as soon as the lexer is touched again. To generate the `src/json.hpp` file which is actually used during compilation of the tests and all other code, please execute
```sh
make re2c
```
To run [`re2c`](http://re2c.org) and generate/overwrite file `src/json.hpp` with your changes in file `src/json.hpp.re2c`. We currently use re2c version 0.16. Please also use this version, because other re2c versions tend to create code that differs a lot from which makes diffs unusable.
1. [`src/json.hpp`](https://github.com/nlohmann/json/blob/master/src/json.hpp)
2. [`test/src/unit.cpp`](https://github.com/nlohmann/json/blob/master/test/unit.cpp) - This contains the [Catch](https://github.com/philsquared/Catch) unit tests which currently cover [100 %](https://coveralls.io/github/nlohmann/json) of the library's code.
@ -49,8 +38,6 @@ There are currently two files which need to be edited:
The test cases are also executed with several different compilers on [Travis](https://travis-ci.org/nlohmann/json) once you open a pull request.
Please understand that I cannot accept pull requests changing only file `src/json.hpp`.
## Note
@ -59,7 +46,6 @@ Please understand that I cannot accept pull requests changing only file `src/jso
## Please don't
- Please do not only make changes to file `src/json.hpp` -- please read the paragraph above and understand why `src/json.hpp.re2c` exists.
- The C++11 support varies between different **compilers** and versions. Please note the [list of supported compilers](https://github.com/nlohmann/json/blob/master/README.md#supported-compilers). Some compilers like GCC 4.8 (and earlier), Clang 3.3 (and earlier), or Microsoft Visual Studio 13.0 and earlier are known not to work due to missing or incomplete C++11 support. Please refrain from proposing changes that work around these compiler's limitations with `#ifdef`s or other means.
- Specifically, I am aware of compilation problems with **Microsoft Visual Studio** (there even is an [issue label](https://github.com/nlohmann/json/issues?utf8=✓&q=label%3A%22visual+studio%22+) for these kind of bugs). I understand that even in 2016, complete C++11 support isn't there yet. But please also understand that I do not want to drop features or uglify the code just to make Microsoft's sub-standard compiler happy. The past has shown that there are ways to express the functionality such that the code compiles with the most recent MSVC - unfortunately, this is not the main objective of the project.
- Please refrain from proposing changes that would **break [JSON](http://json.org) conformance**. If you propose a conformant extension of JSON to be supported by the library, please motivate this extension.

24
.github/PULL_REQUEST_TEMPLATE.md vendored
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@ -3,35 +3,18 @@
There are currently two files which need to be edited:
1. [`src/json.hpp.re2c`](https://github.com/nlohmann/json/blob/master/src/json.hpp.re2c) (note the `.re2c` suffix) - This file contains a comment section which describes the JSON lexic. This section is translated by [`re2c`](http://re2c.org) into file [`src/json.hpp`](https://github.com/nlohmann/json/blob/master/src/json.hpp) which is plain "vanilla" C++11 code. (In fact, the generated lexer consists of some hundred lines of `goto`s, which is a hint you never want to edit this file...).
If you only edit file `src/json.hpp` (without the `.re2c` suffix), your changes will be overwritten as soon as the lexer is touched again. To generate the `src/json.hpp` file which is actually used during compilation of the tests and all other code, please execute
```sh
make re2c
```
To run [`re2c`](http://re2c.org) and generate/overwrite file `src/json.hpp` with your changes in file `src/json.hpp.re2c`.
1. [`src/json.hpp`](https://github.com/nlohmann/json/blob/master/src/json.hpp)
2. [`test/src/unit.cpp`](https://github.com/nlohmann/json/blob/master/test/unit.cpp) - This contains the [Catch](https://github.com/philsquared/Catch) unit tests which currently cover [100 %](https://coveralls.io/github/nlohmann/json) of the library's code.
If you add or change a feature, please also add a unit test to this file. The unit tests can be compiled with
If you add or change a feature, please also add a unit test to this file. The unit tests can be compiled and executed with
```sh
make
```
and can be executed with
```sh
./json_unit
make check
```
The test cases are also executed with several different compilers on [Travis](https://travis-ci.org/nlohmann/json) once you open a pull request.
Please understand that I cannot accept pull requests changing only file `src/json.hpp`.
## Note
@ -39,7 +22,6 @@ Please understand that I cannot accept pull requests changing only file `src/jso
## Please don't
- Only make changes to file `src/json.hpp` -- please read the paragraph above and understand why `src/json.hpp.re2c` exists.
- The C++11 support varies between different **compilers** and versions. Please note the [list of supported compilers](https://github.com/nlohmann/json/blob/master/README.md#supported-compilers). Some compilers like GCC 4.8 (and earlier), Clang 3.3 (and earlier), or Microsoft Visual Studio 13.0 and earlier are known not to work due to missing or incomplete C++11 support. Please refrain from proposing changes that work around these compiler's limitations with `#ifdef`s or other means.
- Specifically, I am aware of compilation problems with **Microsoft Visual Studio** (there even is an [issue label](https://github.com/nlohmann/json/issues?utf8=✓&q=label%3A%22visual+studio%22+) for these kind of bugs). I understand that even in 2016, complete C++11 support isn't there yet. But please also understand that I do not want to drop features or uglify the code just to make Microsoft's sub-standard compiler happy. The past has shown that there are ways to express the functionality such that the code compiles with the most recent MSVC - unfortunately, this is not the main objective of the project.
- Please refrain from proposing changes that would **break [JSON](http://json.org) conformance**. If you propose a conformant extension of JSON to be supported by the library, please motivate this extension.