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CONTRIBUTING.md

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Development Setup

You may already have an editor or IDE you want to use. In any case we provide a pre configured Visual Studio Code setup.

Workflow

Issue

TODO

Pull requests

  • Create a feature branch from the default branch (master) and merge back against that branch.
  • It's OK to have multiple small commits as you work on the PR - GitHub automatically squashes them before merging.
  • Make sure tests pass.
  • If adding a new feature:
    • Provide a convincing reason to add this feature. Ideally, you should open a suggestion issue first and have it approved before working on it.
  • If fixing bug:
    • If you are resolving an open issue, add (fix #xxxx) (#xxxx being the issue ID) in your PR title for a better release log, e.g. chore(feat): implement SSR (fix #1234).
    • Provide a detailed description of the bug in the PR.

Code Specification

  • use QT wherever it's possible (except there is a good reason)
  • use unix line endings (not windows)
  • indent your code with TABs instead of spaces
  • your files should end with a newline
  • names are camel case
  • use utf8 file encoding (ANSI encoding is strictly forbidden!)
  • use speaking names for variables.
  • avoid code dups -> if you write similar code blocks more the 2 times -> refactoring!
  • avoid compiler macros (#ifdef #define ...) where possible
  • class member variables must prefixed with underscore int _myMemberVar
  • initializer list on constructors:
bad:
MyClass::MyClass()
	: myVarA(0), myVarB("eee"), myVarC(true)
{
}

MyClass::MyClass() : myVarA(0),
	myVarB("eee"),
	myVarC(true)
{
}

good:
MyClass::MyClass()
	: myVarA(0)
	, myVarB("eee")
	, myVarC(true)
{
}
  • pointer declaration
bad:
int *foo;
int * fooFoo;

good:
int* foo;

Logger

Hyperion has a own logger class with different log levels.

  • Use macros in include/utils/logger.h
  • Don't use the Logger class directly unless there is a good reason to do so.
// *** including
#include <utils/logger.h>

// creating
// get a logger, this will create a logger named MAIN with min loglevel INFO, DEBUG messages won't displayed
Logger * log_main = Logger::getInstance("MAIN");

// get a logger, this will create a logger named MAIN with min loglevel DEBUG,  all messages displayed
Logger * log_main = Logger::getInstance("MAIN", Logger::DEBUG);

// using
// basic
Debug( log_main, "hello folks!");
Info( log_main, "hello again!");
Warning( log_main, "something is crazy");
Error( log_main, "oh to crazy, aborting");

// quick logging, when only one message exists and want no typing overhead - or usage in static functions
Info( Logger::getInstance("LedDevice"), "Leddevice %s started", "PublicStreetLighting");

// a bit more complex - with printf like format
Info( log_main, "hello %s, you have %d messages", "Dax", 25);

// conditional messages
WarningIf( (value>threshold), log_main, "Alert, your value is greater then %d", threshold );

The amount of "%" must match with following arguments

The Placeholders

  • %s for strings (this are cstrings, when having std::string use myStdString.c_str() to convert)
  • %d for integer numbers
  • %f for float numbers
  • more placeholders possible, see here

Log Level

  • Debug - used when message is more or less for the developer or for trouble shooting
  • Info - used for not absolutely developer stuff messages for what's going on
  • Warning - warn if something is not as it should be, but didn't harm
  • Error - used when an error occurs

Commit specification

TODO

Visual Studio Code

We assume that you successfully compiled Hyperion with the Compile HowTo WITHOUT Docker
If you want to use VSCode for development follow the steps.

  • Install VSCode. On Ubuntu 16.04+ you can also use the Snapcraft VSCode package.
  • Linux: Install gdb sudo apt-get install gdb
  • Mac: ?
  • Open VSCode and click on File -> Open Workspace and select the file hyperion.ng/.vscode/hyperion.code-workspace
  • Install recommended extensions
  • If you installed the Task Explorer you can now use the defined vscode tasks to build Hyperion and configure cmake
  • For debugging you need to build Hyperion in Debug mode and start the correct Run config