mirror of
https://github.com/pocketpy/pocketpy
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100 lines
1.6 KiB
Markdown
100 lines
1.6 KiB
Markdown
---
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icon: book
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order: 2
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label: Coding style guide
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---
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# Coding Style Guide
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## Naming rules
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For class names, always use **PascalCase**
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```cpp
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// Correct
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class FooBar {};
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// Wrong
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class fooBar {};
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class foo_bar {};
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```
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For function and methods, use **snake_case**
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```cpp
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// Correct
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int test_func(int x) { return x+1; }
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// Wrong
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int TestFunc(int x) { return x+1; }
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int testFunc(int x) { return x+1; }
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```
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For special python objects, use the same name as in python.
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```cpp
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auto x = vm->None;
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vm->SyntaxError(...);
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vm->TypeError(...);
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vm->call(obj, __repr__);
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```
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For global constants, use **k** prefix with **PascalCase**
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```cpp
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const int kMaxCount = 10;
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const float kMinValue = 1.0;
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```
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For macros, use **SNAKE_CASE**
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```cpp
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#define FOO_BAR 1
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#define TEST(x) x+1
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```
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## Access control
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Please use python style access control.
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We do not recommend to use C++ keywords such as `private` or `public` to achieve access control. Also do not write any trivial setter/getter.
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Use a single `_` as prefix to indicate a function or variable is for internal use.
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```cpp
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class FooBar {
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public:
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int _count;
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int inc() { _count+=1; }
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void _clear() { _count=0; }
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}
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```
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`_` prefix is just a warning to remind you to use such members carefully.
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It does not forbid users to access internal members.
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## Use compact style
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Try to make the code compact if it does not affect readability.
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```cpp
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// Correct
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if(x == 1) break;
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// Wrong
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if(x == 1){
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break;
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}
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```
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## For `shared_ptr<T>`
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Use a `_` suffix to indicate a type is a shared pointer.
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```cpp
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typedef shared_ptr<CodeObject> CodeObject_;
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CodeObject_ co = make_shared<CodeObject>();
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```
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