| | 1 | = Doxygen = |
| | 2 | [[TracNav(TracNav/TOC_Development)]] |
| | 3 | [[TOC]] |
| | 4 | |
| | 5 | [http://www.doxygen.org Doxygen] is a programm that generates a developers manual out of special comments in .cc and .h files. |
| | 6 | |
| | 7 | The main Tags we use are described below: |
| | 8 | |
| | 9 | |
| | 10 | |
| | 11 | == Introductory Comment == |
| | 12 | Every file that contains source code must be documented with an introductory comment that provides information on the file name and its contents: |
| | 13 | {{{ |
| | 14 | /** |
| | 15 | @file |
| | 16 | @brief |
| | 17 | A brief description. |
| | 18 | |
| | 19 | More description... (new paragraph after @brief) |
| | 20 | */ |
| | 21 | }}} |
| | 22 | Note: try not to fill in the filename. It is obvious and the comment compiler (Doxygen) will do it automatically and you don't have to adjust it when renaming the file. |
| | 23 | |
| | 24 | == Classes and Structs == |
| | 25 | In the header file, just above the class declaration, explain what the class does and where it is used. You could even add an example if it helps understanding the class. |
| | 26 | {{{ |
| | 27 | /** |
| | 28 | @brief |
| | 29 | A brief description. |
| | 30 | More brief description. |
| | 31 | |
| | 32 | Details follow here. |
| | 33 | Maybe an example or something. |
| | 34 | */ |
| | 35 | class ClassName |
| | 36 | { |
| | 37 | ... |
| | 38 | }}} |
| | 39 | |
| | 40 | == Class Members == |
| | 41 | Add a brief description to every member of a class: |
| | 42 | {{{ |
| | 43 | private: |
| | 44 | int value_; //!< A brief description |
| | 45 | int longerValueName_; //!< A brief description |
| | 46 | }}} |
| | 47 | The < after //! indicates that the member is located in front of the comment instead of after the comment. |
| | 48 | |
| | 49 | If you need a more detailed description, use: |
| | 50 | {{{ |
| | 51 | private: |
| | 52 | int value_; //!< A detailed description |
| | 53 | //!< More detailed description |
| | 54 | //!< ... |
| | 55 | }}} |
| | 56 | or |
| | 57 | {{{ |
| | 58 | private: |
| | 59 | int value_; /**< |
| | 60 | A detailed description |
| | 61 | More detailed description |
| | 62 | ... |
| | 63 | */ |
| | 64 | }}} |
| | 65 | |
| | 66 | == Functions == |
| | 67 | Doxygen documentation (javadoc like for C++) is placed in the source file, just above the function header. If the function is inline, place the comment there but keep it short. [[br]] |
| | 68 | When writing documentation in the source file don't make it all jam-packed to enhance readability. Here is an example to demonstrate formatting: |
| | 69 | {{{ |
| | 70 | /** |
| | 71 | @brief |
| | 72 | A brief description. |
| | 73 | More brief description. |
| | 74 | |
| | 75 | Details follow here. |
| | 76 | Maybe an example or something. |
| | 77 | @param param1 |
| | 78 | Parameter description for parameter named 'param1' |
| | 79 | @param param2 |
| | 80 | Parameter description for parameter named 'param2' |
| | 81 | @return |
| | 82 | Describe what the function returns |
| | 83 | @note |
| | 84 | Something important to remember. |
| | 85 | @author |
| | 86 | The mighty whoever |
| | 87 | */ |
| | 88 | returntype functionname(type1 param1, type2 param2) |
| | 89 | { |
| | 90 | ... |
| | 91 | }}} |
| | 92 | |
| | 93 | == Inline Functions == |
| | 94 | Inline functions need documentation as well, but we don't want a messy headerfile. Keep the comments short and put all doxygen code on one line: |
| | 95 | {{{ |
| | 96 | /** @brief A brief description. @param param1 description [...] @return description */ |
| | 97 | inline returntype functionname(type1 param1 [, ...]) { ... } |
| | 98 | }}} |
| | 99 | |
| | 100 | == Full Example == |
| | 101 | MyClass.h file: |
| | 102 | {{{ |
| | 103 | /** |
| | 104 | @file |
| | 105 | @brief |
| | 106 | A brief description of the file, the classes and macros; links to other files. |
| | 107 | |
| | 108 | More description... (new paragraph after @brief) |
| | 109 | Maybe an example or something. |
| | 110 | */ |
| | 111 | |
| | 112 | /** |
| | 113 | @brief |
| | 114 | A brief description of the class |
| | 115 | |
| | 116 | Details follow here. |
| | 117 | More details... |
| | 118 | */ |
| | 119 | class MyClass |
| | 120 | { |
| | 121 | public: |
| | 122 | /** @brief A brief description of the inline function. @return description */ |
| | 123 | inline int getValue() const { return this->value_; } |
| | 124 | |
| | 125 | void setValue(int value); |
| | 126 | |
| | 127 | private: |
| | 128 | int value_; //!< A brief description of the value |
| | 129 | }; |
| | 130 | }}} |
| | 131 | |
| | 132 | MyClass.cc: |
| | 133 | {{{ |
| | 134 | /** |
| | 135 | @brief |
| | 136 | A brief description of the function. |
| | 137 | More brief description. |
| | 138 | |
| | 139 | Details follow here. |
| | 140 | Maybe an example or something. |
| | 141 | |
| | 142 | @param value |
| | 143 | Parameter description for parameter named 'value' |
| | 144 | */ |
| | 145 | void MyClass::setValue(int value) |
| | 146 | { |
| | 147 | if (value > 0 && value < 10) |
| | 148 | this->value_ = value; |
| | 149 | } |
| | 150 | }}} |
| | 151 | |
| | 152 | == Also see == |
| | 153 | * [http://www.stack.nl/~dimitri/doxygen/docblocks.html this] for more info on doxygen-tags |
| | 154 | * [http://www.stack.nl/~dimitri/doxygen/commands.html this] for all possible doxygen-tags |