In the next part of this article we'll see about eclox, the eclipse plugin for doxygen. Once the documentation is generated, we can start navigating from the whatever is the main class methods and click on the call-graph functions to navigate through the entire code. Of course, it take a bit of time to generate the call-graphs. In the Diagrams tab, we will have to select the Call graphs option to generate the call graphs. The doxygen documentation page has a very clear steps on how to use the wizard to generate the documentation. dot tool is a part of the graphviz package that helps generate the call-graphs. To generate the call graphs, doxygen requires the dot tool to be available in the path. We can use either to generate the documentation, however for newbies the wizard will help generating the configuration file necessary to generate the documentation So in order to understand the code first, call-graphs are a great way to understand the code flow, even if the code is poorly or even not documented.ĭoxygen provides both the command-line version and a wizard that guides us through the documentation generation process Call graphs are control flow graphs that shows what all functions/methods a particular function/method calls.Īn example of a call-graph would be like the diagram below When a new release is is present you can update to that version and apply the patch there (will require your own build. Depending on the time of the time of the integration this can be 1.9.4, 1.9.5. It also supports a variety of output formats.ĭoxygen has a robust and big set of features that this article's space is too small to contain, so we will look at it from the perspective of understanding code.ĭoxygen has a great feature of generating something called call-graphs. When the issue 9070 Doxygen is not showing all called functions in graph plot 9087 is integrated in the master it will be in the next release. It supports these source languages out of the box - C/C++, Java, Python, VHDL, PHP IDL, C#, Fortran, Objective-C 2.0, and to some extent D. The beauty of doxygen is it has features to help understand code better even in if the code is not documented properly. Javadoc for example is very popular because of the way the code documentation is organized. There are other tools documentation generators too. It would be great if they had somewhere to start and understand the code that they are going to breath through.ĭoxygen has been there for almost a quarter of a century, written by Dimitri van Heesch. Sometimes the situation is developers don't know where to begin, and understanding it is even more a herculean task. Doxygen can use the 'dot' tool from graphviz to generate more advanced diagrams and graphs. The plight is usually for the developers who are tasked to maintain a code that is written by someone else. Doxygen has built-in support to generate inheritance diagrams for C++ classes. It would be a nightmare if the code is not documented. Going through the code and understanding it is a daunting task, esp.
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