Code Generation

Overview

In general it’s totally fine to define HSM structure manually in code. But in real projects we often have to deal with:

• state machine complexity (understanding states logic from code can becomes almost impossible even with as little as 10 different states);

• synchronizing implementation and state diagrams for documentation;

• copy-paste mistakes.

To help deal with these issues hsmcpp library comes with scxml2gen utility. It uses state machines defined in SCXML format and allows to:

• generate C++ code;

• generate PlantUML state diagrams.

Content

• SCXML Format
  • Overview
  • Supported SCXML tags and attributes
  • Callbacks Definition
  • Splitting SCXML files
    • Include using <xi:include>
      • Using <xi:include> with a wrapper state
      • Including <xi:include> directly
    • Include using “src” attribute of <state>
• SCXML editors
  • Qt Creator
    • Specifying callbacks in editor
    • Working with timers and actions
    • Conditional transitions
    • Conditional entry points
  • scxmlgui
  • YAKINDU Statechart Tools
  • ScxmlEditor
• Build Integration
  • Integrating code generation to project
  • Generating PlantUML diagrams