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f4a72303cb
* remove trailing whitespaces * minor docs tweaks * some more trailing whitespaces * few more tweaks
100 lines
3.4 KiB
Markdown
100 lines
3.4 KiB
Markdown
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# Documentation Style Guide
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This project uses [Doxygen](https://www.doxygen.nl/index.html) to generate documentation pages from comments found in the source files. This guide focuses on writing compatible comments and ensuring consistency across the codebase.
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```diff
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- Note -
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As the codebase is constantly changing, only document what is complete, well-understood and not
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already covered by good naming. This is especially true for function parameters and return values.
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Also note that there is no obligation to completing the documentation steps for functions you
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work on if you do not want to at the time.
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```
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To generate a doxygen manual for the project, ensure you have doxygen installed and then cd into the project root directory and run `doxygen Doxyfile`.
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## Documenting Functions
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For functions, a description of the function's purpose should go above the function:
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```c
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/**
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* My description of this function
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*/
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void foo(void);
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```
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Further considerations:
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- Any comments inside the function should follow the usual `//` or `/**/` comment styles.
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- For documenting return values, place a `@return` at the bottom of the function comment followed by the description of the return value. This should only be done if the name of the function is not self-explanatory and is well-understood.
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- For documenting parameters, place a `@param` between the comment and the @return (if applicable) followed by the name of the parameter and a brief description. This should only be done if the name of the parameter is not self-explanatory and is well-understood.
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- All `@param`s should come before `@return` and be in the same order the parameters appear in the function declaration. Note that this does not mean you should add empty `@params` for parameters deemed self-explanatory.
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A full example would be as follows: (however in practice functions such as this would be considered self-explanatory)
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```c
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/**
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* This is an example
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*
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* @param bar the input
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* @return bar multiplied by 2
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*/
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s32 foo(s32 bar) {
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return 2*bar;
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}
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```
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## Documenting Variables
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Documentation of variables should include what this variable is used for if the name is not completely clear and if applicable whether a set of defines or enumerations should be used alongside it (which should be linked with `@see`, see below)
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```c
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/**
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* My description of this variable
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*/
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s32 foo;
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```
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## Documenting Files
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File documentation should go near the top of the file, below includes. It should only feature information that is general to the file.
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```c
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/**
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* @file file_name.c
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*
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* My description of this file
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*/
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```
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## Other
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### Documenting Bugs:
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Bugs should be documented on the line above where the bug begins.
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```c
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//! @bug description
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```
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### Linking related information:
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`@see` should be used to provide links to related information where appropriate, for example:
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```c
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/**
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* Save File Data
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* @see SaveContext
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*/
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SaveContext gSaveContext;
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```
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In the case of functions, `@see` should come before the first `@param`.
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### HTML
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You can include html tags in your doc comments, however it is strongly advised against doing this if it greatly reduces readability of the code comments.
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```c
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/**
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* My<br>
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* Newline<br>
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* Doc Comment
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*/
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```
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### LaTeX
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You can embed [LaTeX](https://wikipedia.org/wiki/LaTeX) in your doc comments if useful to do so.
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For inline rendering:
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```c
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/**
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* \f$ \textrm{Your LaTeX Here} \f$
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*/
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```
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For centered rendering on a separate line:
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```c
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/**
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* \f[ \textrm{Your LaTeX Here} \f]
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*/
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```
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