68 lines
1.9 KiB
Markdown
68 lines
1.9 KiB
Markdown
# Code Style
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**Read this before contributing**
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The following code style should be applied to the whole noxos codebase.
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Pull Requests that don't follow this code style will be rejected.
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Also commit messages have to fit the described format.
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# Naming conventions
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- **structs** are suffixed with **_T**
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- **typedefs** are suffixed with **_t**
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- **enums** are suffixed with **_E**
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- **global** variables are prefixed with **g_**
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Everything is **snake_case**.
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# Code readability
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To make the code as readable and self explaining as possible, there are a few patterns that should be used.
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## Avoid abbreviations
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Give your variables, functions, etc. meaningfully names.
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The times of 80-char wide screens are over, feel free to use that space :D
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Example: `sym_at_idx` -> `get_symbol_at_index`
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But you're not forced to (anything) write out everything.
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For example the **Interrupt Descriptor Table** is simply referred to as **idt** (this abbreviation is btw standard).
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## Avoid indentation nesting
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In a perfect codebase, the maximum indention level would be 3.
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The goal of NoxOS is not to be a perfect codebase, but please avoid huge indention nesting.
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To achieve this, you can break parts into extra functions and/or use the early return pattern.
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Example (definitely written 100% sober):
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```c
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bool likes_pigs (void* a) {
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if (a != NULL) {
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if (a == 0xACAB) {
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return false;
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}
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}
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return true;
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}
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```
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->
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```c
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bool likes_pigs (void* a) {
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if (a == NULL) { return true; }
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if (a != 0xACAB) { return true; }
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return false;
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}
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```
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## align declarations
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Please align declarations, definitions, etc like in the example:
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```c
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char am_i_a_variable = '?';
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uint64_t number = 0;
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bool i_waste_bits = true;
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```
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## namespaces
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Unlike C++, C has no namespaces.
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To achieve the goal of namespaces, please prefix your functions, structs, etc. with the "namespace" they are in.
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Example: `out_byte` -> `io_out_byte`
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