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LiquidJava FSM

LiquidJava state machine parser used by the LiquidJava VS Code language server and MCP server. Depends on the LiquidJava verifier.

Example

Source File

package example;

import liquidjava.specification.StateRefinement;
import liquidjava.specification.StateSet;

@StateSet({"open", "closed"})
public class File {

    @StateRefinement(to="open(this)")
    public File() {}

    @StateRefinement(from="open(this)")
    public void read() {}

    @StateRefinement(from="open(this)", to="closed(this)")
    public void close() {}
}

Source Code

import liquidjava.fsm.StateMachine;
import liquidjava.fsm.StateMachineParser;

StateMachine stateMachine = StateMachineParser.parse(path.toUri().toString());

JSON Output

{
  "className": "example.File",
  "states": [
    "open",
    "closed"
  ],
  "transitions": [
    {
      "from": "open",
      "to": "closed",
      "label": "close",
      "fromCondition": null,
      "toCondition": null
    },
    {
      "from": "open",
      "to": "open",
      "label": "read",
      "fromCondition": null,
      "toCondition": null
    }
  ],
  "initialTransitions": [
    {
      "to": "open",
      "toCondition": null
    }
  ]
}

Maven dependency

<dependency>
  <groupId>io.github.liquid-java</groupId>
  <artifactId>liquidjava-fsm</artifactId>
  <version>0.1.0</version>
</dependency>

Release

Releases are published to Maven Central by GitHub Actions when a v* tag is pushed to main that is created using the release.sh script:

./release.sh