A set of actions can be obtained using the algorithm lexer:
val raw = """
// This is an example algorithm
set(x, 2)
while (x < 10) {
set(x, x + 1)
}
print("x = ", x)
"""
val actions = AlgorithmLexer(raw).execute()
val result = Context().execute(actions)
You can define a custom action by implementing the Action interface:
data class CustomAction(val value: Value): Action {
companion object {
fun handler(args: List<Value>): Action {
if (args.count() != 1) {
throw IncorrectArgumentCountException("custom", args.count(), 1)
}
return CustomAction(args[0])
}
}
override fun execute(context: Context): Context {
return context
}
override val algorithmString: String get() {
return "custom(" + value.algorithmString + ")"
}
}
And then register it in your lexer instance to use it in your algorithm:
val actions = AlgorithmLexer("custom(2)")
.registerKeyword("custom", CustomAction::handler)
.execute()