Created
September 27, 2013 21:47
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hygiene
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| var random = function(seed) { /* ... */ } | |
| let m = macro { | |
| rule {()} => { | |
| var n = random(42); // ... | |
| } | |
| } |
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In fact, instead of renaming macro-declared variables to prevent overlap, you could just wrap (while expanding) the body of the macro code in a stand-alone
{ .. }block and changevars tolets, and that would create hygiene (aka, prevent any inner-to-outer leakage) in the same way as renaming, but with way less work.