On Thu, Sep 13, 2012 at 1:31 PM, Brandon Bloom <snprbo...@gmail.com> wrote:
>> Why should the backend have to deal with JS AST nodes?
>
>
> I'm considering changing the emit phase to produce a Google Closure Compiler
> AST. This would have several benefits:
>
> The emit phase would become functional (returning an AST) instead of
> procedural (printing source).

At the cost of additional complexity for the extremely simple cases
where we leverage js* internally.

> SourceMaps would be provided, virtually for free, by the Closure Compiler.
> We just need to copy line and column metadata to the JS AST nodes.
> Pretty printed code generation is also free (useful for debugging the
> compiler).

This does sound appealing but looks like a large overhaul which is a
significant cost. Also, I don't think we're that far off from source
maps.

David

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