What is Reddit's opinion of Yakindu Statechart Tools?

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Thanks! :) This is the current beta of YAKINDU Statechart Tools installed via update site into the stmcubeide. I‘m a developer there and preparing an example.

https://www.itemis.com/en/yakindu/state-machine/

https://www.itemis.com/en/yakindu/state-machine/documentation/user-guide/overview_what_are_state_machines

https://en.wikipedia.org/wiki/Finite-state_machine

Both links give quick but comprehensive introductions to the topic.

In short, it is a way to track states and transitions.

In your example: You parse a text character by character. You reach a single asterisk. At this point, there can be two possibilities (actually more than two, but let's keep it at that).

1. text or a number follows. In this case, the transition is from previous state to italics at which it stays until it finds the corresponding asterisk.
2. another asterisk follows. In this case, the state switches from previous to bold and stays like there until the corresponding double asterisk has been found.

Such states can be described for any formatting you want to handle and the transitions can also be precisely described.

You might want to check out Yakindu Statechart tools: https://www.itemis.com/en/yakindu/state-machine/

You can draw your statemachine in a graphical editor and generate code for your target language like C++.