E-on-JavaScript

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E-on-JavaScript is an E implementation which compiles E to JavaScript code, suitable for running in web browsers.
E-on-JavaScript is an E implementation which compiles E to JavaScript code, suitable for running in web browsers.
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The source is at
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The source is currently hosted [https://github.com/kpreid/e-on-javascript/ at GitHub].
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  <svn://svn.synchrona.org/erights/e-on-javascript/trunk>
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It is designed to interoperate with Caja: If cajita.js is also loaded,   
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It was designed to interoperate with [[Caja]], however it is not compatible with modern Caja so the rest of this paragraph is out of date. If cajita.js is also loaded,   
E code can call Cajita-tamed objects; also, the output of the compiler   
E code can call Cajita-tamed objects; also, the output of the compiler   
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should be within the Cajita subset (I have not tested this).
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should be within the Cajita subset (I have not tested this). However, Cajita code can create objects which violate E [[sameness]] invariants.
It is as yet quite incomplete; especially, the compiler does not   
It is as yet quite incomplete; especially, the compiler does not   
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==Demo==
==Demo==
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[http://www.slimy.com/~kpreid/eojs/demo/ Out-of-date demo]
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[http://www.slimy.com/~kpreid/eojs/demo/ Out-of-date demo] {{XXX|broken link}}
It supports converting an Updoc document, or a HTML document with embedded Updoc, into a HTML document such   
It supports converting an Updoc document, or a HTML document with embedded Updoc, into a HTML document such   
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color; this is to be fixed).
color; this is to be fixed).
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As this particular Updoc example was borrowed from E-on-CL, many of the tests fail   
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As this particular Updoc example was borrowed from [[E-on-CL]], many of the tests fail   
because they are specific to E-on-CL in some way. Many other tests   
because they are specific to E-on-CL in some way. Many other tests   
fail because in the demonstrated version there was no printing subsystem yet, so everything uses   
fail because in the demonstrated version there was no printing subsystem yet, so everything uses   

Latest revision as of 18:24, 16 February 2012

E-on-JavaScript is an E implementation which compiles E to JavaScript code, suitable for running in web browsers.

The source is currently hosted at GitHub.

It was designed to interoperate with Caja, however it is not compatible with modern Caja so the rest of this paragraph is out of date. If cajita.js is also loaded, E code can call Cajita-tamed objects; also, the output of the compiler should be within the Cajita subset (I have not tested this). However, Cajita code can create objects which violate E sameness invariants.

It is as yet quite incomplete; especially, the compiler does not implement all of Kernel-E, and generates inefficient and verbose code.

Demo

Out-of-date demo XXX broken link

It supports converting an Updoc document, or a HTML document with embedded Updoc, into a HTML document such that the tests are executed. A (stale) example.

Not-yet-executed tests have dashed bars to the left, successful tests have light gray bars, and unsuccessful tests have red bars and show the expected and actual values (which are not differentiated except by color; this is to be fixed).

As this particular Updoc example was borrowed from E-on-CL, many of the tests fail because they are specific to E-on-CL in some way. Many other tests fail because in the demonstrated version there was no printing subsystem yet, so everything uses JS .toString() and thus the wrong syntax.

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