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POA proposal to add statemachine support to C++-like language
 

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  1. POA proposal to add statemachine support to C++-like language
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    <p>Lately as part of my day job I've been learning IBM Rhapsody and using it to generate code in C++ from the UML.</p> <p>Yesterday it struck me that it might be cool to think about adding state machine support to my C++ compiler, so I jotted a few notes here: <a href="http://ellcc.org/wiki/index.php/State_machines_and_Active_Classes" rel="nofollow noreferrer">http://ellcc.org/wiki/index.php/State_machines_and_Active_Classes</a></p> <p>My motivations for doing this are:</p> <ol> <li>It seems like a cool idea.</li> <li>The compiler could do much better semantic checking (with better error checking) than the current Rhapsody/normal C++ compiler.</li> <li>There are many optimization possibilities available when the compiler itself understands the state machine structure.</li> </ol> <p>I may try to extend my grammar to except something like the proposal to see how well it works.</p> <p>What is your opinion of the proposal? Does it seem readable? Does it seem worthwhile? <hr/> Edit:</p> <p>Thanks for the answers recommending specific libraries to do state machines, but that wasn't my question. I've implemented many state machines using both libraries and code that I've written.</p> <p>I was really looking for ideas, criticism, etc. about the design of a state machine extension to a C++-like language, not whether this change would be appropriate for addition to standard C++. Think of it as a domain specific extension, where my my domain is real-time control applications.</p> <p>I've started implementation of the extension in my compiler as described here: <a href="http://ellcc.org/wiki/index.php/State%5Fmachines%5Fand%5FActive%5FClasses" rel="nofollow noreferrer">http://ellcc.org/wiki/index.php/State%5Fmachines%5Fand%5FActive%5FClasses</a></p> <p>So far the concept hasn't had to change much going from proposal to implementation but there have been a few changes in details and I'm refining my understanding of the semantics of the problem.</p> <p>Time will tell whether the whole concept has any value, however. ;-)</p>
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    1. USRichard Pennington
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    1. COI probably should have entitled this "A proposal to add statemachine support to a C++-like language".
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      1. USRichard Pennington
    2. COYou could look into Qt State Machine Framework.
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    3. COI'm not really sure how to read this. Some of your comments to answers below seem to indicate that you ultimately want to submit this as a proposal to the C++ standardization committee. But in the question you're saying you're not interested in whether it's an appropriate addition to standard C++. Makes it a bit hard for me to figure out what kind of feedback you're after.
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