====== Actionaz coding style ======

//Version 1.0 - By Jonathan Mercier-Ganady//

Before contributing to the project please read the following page.

The Actionaz coding style is almost the same as the [[http://qt-project.org/wiki/Qt_Coding_Style|coding style of Qt]].

<note tip>Only the differences with the Qt coding style are shown.</note>

===== General rules =====

  - Remember to add //tr()// around text that can be translated.
  - Commit often,
  - Syntax when fixing a Redmine declared bug : [explanation] fixes bug #[bug number here]
  - Code in C++, not in C.
  - Never copy & paste code, if you want to do it that means that something is wrong : re-think the code structure.
  - Adapt yourself to the project for which you are developing.

===== Comments =====

Only comment when needed, usually naming the variables, classes and methods correctly
should be sufficient for every developer to understand what the code does.

  - Comment each complex algorithm.
  - Don't over-comment.<code>
// Wrong
// Returns: the value of X
int getX();
</code>

===== Class attributes =====


  - Class attributes are always private, use getters and setters to access them.
  - Class attributes start with a lower m.<code>
class MyClass
{
    private:
    int mMyValue;
};
</code>

===== Setters and getters =====

  - Setters start with “set”.
  - Getters don't start with “get”.
  - Getters are const.<code>
class MyClass
{
    public:
        int myValue() const { return mMyValue; }
        void setMyValue (int myValue) { mMyValue = myValue; }
    private:
        int mMyValue;
};
</code>

===== Indentation =====

  - Indentation is made with tabulations, not spaces. The tabulation character is designed for that. Spaces are made to separate words, so using spaces to indent in 2010+ with modern editors makes no sense.
  - The tabulation and the indentation size should be set to <wrap hi>**4**</wrap>, warning : this is not the default setting in QtCreator !

===== Declaring variables =====

  - Classes doesn't start with any special letter.
  - Variables are declared when used, not at the start of a block like in C.<code>
// Wrong
int actionIndex;

for(int i = 0; i < 5; ++i)
{
    actionIndex = i * 2;
    // actionIndex is used here...
}

// Correct
for(int i = 0; i < 5; ++i)
{
    int actionIndex = i * 2;
    // actionIndex is used here...
}
</code>

===== Braces =====

  - The correct way to write an if statement :<code>
//Correct
if(foo)
{
    // do stuff here
}

//Wrong
if (foo) {
    // do stuff here
}
</code>
  - The following notation is accepted when the statement is not too complex, and for one level only.<code>
//Wrong
if(foo)
    if(bar)
        doSomething();

//Correct
if(foo)
{
    if(bar)
        doSomething();
}
</code>
  - Never use C-style casts.<code>
// Wrong
float a = 4.2f;
int b = (int)a;

// Correct
float a = 4.2f;
int b = static_cast<int>(a);
</code>

===== Switch statements =====

  - Every case **does not** have to have a break (or return) statement at the end or a comment to indicate that there’s intentionally no break

===== Line breaks =====

  - No numerical limit to the length of a line, just keep it not “too long”.

----
Go back to the page : [[en:devel|Contribute to Actionaz]]

Other languages for this page : [[fr:devel:coding-style|(fr)]]