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POWhat kinds of patterns could I enforce on the code to make it easier to translate to another programming language?
 

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  1. POWhat kinds of patterns could I enforce on the code to make it easier to translate to another programming language?
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    <p>I am setting out to do a side project that has the goal of translating code from one programming language to another. The languages I am starting with are PHP and Python (Python to PHP should be easier to start with), but ideally I would be able to add other languages with (relative) ease. The plan is:</p> <ul> <li><p>This is geared towards web development. The original and target code will be be sitting on top of frameworks (which I will also have to write). These frameworks will embrace an MVC design pattern and follow strict coding conventions. This should make translation somewhat easier. </p></li> <li><p>I am also looking at IOC and dependency injection, as they might make the translation process easier and less error prone.</p></li> <li><p>I'll make use of Python's <a href="http://docs.python.org/library/parser.html" rel="noreferrer">parser module</a>, which lets me fiddle with the Abstract Syntax Tree. Apparently the closest I can get with PHP is <a href="http://php.net/manual/en/function.token-get-all.php" rel="noreferrer">token_get_all()</a>, which is a start.</p></li> <li><p>From then on I can build the AST, symbol tables and control flow. </p></li> </ul> <p>Then I believe I can start outputting code. <strong>I don't need a perfect translation</strong>. I'll still have to review the generated code and fix problems. Ideally the translator should flag problematic translations.</p> <p>Before you ask "What the hell is the point of this?" The answer is... It'll be an interesting learning experience. If you have any insights on how to make this less daunting, please let me know.</p> <hr> <h3>EDIT:</h3> <p>I am more interested in knowing what kinds of patterns I could enforce on the code to make it easier to translate (ie: IoC, SOA ?) the code than how to do the translation.</p>
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    1. COHave you looked at systems like the .NET CLR or Perl6's Parrot? They compile a set of languages down to an intermediate representation which can be run by a common interpreter. If you can go back up from the intermediate representation to a language, you've got a translator.
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    2. CO@Borealid AFAIK the .NET CIL is (relatively) easy to compile *into*, but good luck getting readable code back from that. Looking at Parrot now.
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    3. COThere are similar projects for other languages; I am not sure how rich their authors are. And I am actually restraining myself a lot here, by needing a framework and adhering to strict coding conventions.
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