d2uml 0.2.3

Reverse engineering of D source code into PlantUML classes

To use this package, run the following command in your project's root directory:

Manual usage
Put the following dependency into your project's dependences section:

D to UML

Build Status

UML diagrams can be helpful for code maintenance. But, drawing these diagrams with mouse and keyboard is a tedious task. And popular UML tools don't support reverse engineering for the [D programming language].

This tool uses [libdparse] to parse the given D source code and it extracts class outlines in the [PlantUML] language. Not only a class, but also a struct, and even a module is turned into a class outline.

A good arrangement of the classes is essential for creating effective UML diagrams. The means for tweaking the arrangement is to explicitly specify the direction of arrows: Class Diagram>Changing arrows orientation. Such an artistic design, however, is beyond the capabilities of this pragmatic tool. So, this tool does not even try to extract relations between classes.


Use [dub] to build the tool:

dub build --build=release

Use the tool to extract the class outlines from D source code.

For example:

./d2uml src/*.d > model/classes.puml

Create another file and explicitly specify the relations between the classes. Use the !include directive to include the generated file.

For example: model/diagram.puml

hide empty attributes
hide empty methods

!include classes.plantuml

main .> Outliner
ASTVisitor <|-- Outliner
Outliner -> "*" Classifier
Classifier --> "*" Field
Classifier --> "*" Method
Outliner ..> outliner

Use [plantuml.jar] to generate the image of the diagram:

java -jar path/to/plantuml.jar model/diagram.puml

Finally, have a look at the resulting image:


  • Duml: a similar tool based on a different approach (CTFE)
  • depend: a tool to check actual import dependencies against a UML model of target dependencies
  • Mario Kröplin
0.2.3 2023-Jun-29
0.2.2 2018-Nov-30
0.2.1 2018-Sep-17
0.2.0 2018-Sep-04
0.1.2 2018-Aug-29
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