Ceci est une ancienne révision du document !
Actionaz coding style
Version 1.0 By Jonathan Mercier-Ganady
Before contributing to the project please read the following document.
The Actionaz coding style is almost the same as the coding style of Qt : http://qt.gitorious.org/qt/pages/QtCodingStyle
Note : Only the differences with the Qt coding style are shown.
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.
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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.
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Comment each complex algorithm.
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Don't over-comment.
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// Wrong // Returns: the value of X int getX();
Class attributes
Class attributes are always private, use getters and setters to access them.
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Class attributes start with a lower m.
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class MyClass { private: int mMyValue; };
Setters and getters
Setters start with “set”.
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Getters don't start with “get”.
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Getters are const.
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class MyClass { public: int myValue() const { return mMyValue; } void setMyValue (int myValue) { mMyValue = myValue; } private: int mMyValue; };
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.
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The tabulation and the indentation size should be set to 4, warning : this is not the default setting in QtCreator !
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Declaring variables
Variables are declared when used, not at the start of a block like in C.
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// 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…
}
Classes doesn't start with any special letter.
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Braces
The correct way to write an if statement :
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if(foo) { // do stuff here } So please, never use the following notation :
if (foo) { // do stuff here
}
The following notation is accepted when the statement is not too complex, and for one level only.
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// Wrong if(foo) if(bar) doSomething() ; // Correct if(foo) { if(bar) doSomething() ; } • Never use C-style casts.
// Wrong float a = 4.2f; int b = (int)a; // Correct float a = 4.2f; int b = static_cast<int>(a);
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
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Line breaks
No numerical limit to the length of a line, just keep it not “too long”.
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