How to print parsed tree nicely?

Andrey Ilinykh

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24 Oct 2015, 22:46:1124/10/2015

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Hello everybody!

I want to print a parsed tree. if I just call toString method I get something like Function1[Int,Int]. It is correct, but I want to have Int => Int. What is the best way to do it? I Looked into declaration printer, it heavily relies on Symbols (which are not available in parsed tree) and has to run on compiler thread. Is it possible to use declaration printer on any thread?

Thank you,

Andrey

Simon Schäfer

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25 Oct 2015, 06:30:4725/10/2015

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On 10/25/2015 03:46 AM, Andrey Ilinykh wrote:
> I want to print a parsed tree. if I just call toString method I get
> something like Function1[Int,Int]. It is correct, but I want to have
> Int => Int. What is the best way to do it?

This is indeed a problem, which makes DeclarationPrinter useless. It
looks like you have to bite the bullet and reimplement parts of
DeclarationPrinter based only on the syntactical information.

> I Looked into declaration printer, it heavily relies on Symbols (which
> are not available in parsed tree) and has to run on compiler thread.
> Is it possible to use declaration printer on any thread?

No, that is not possible. It needs to run on the PC thread.

iulian dragos

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26 Oct 2015, 06:19:5426/10/2015

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On Sun, Oct 25, 2015 at 3:46 AM, Andrey Ilinykh <aili...@gmail.com> wrote:

Hello everybody!
I want to print a parsed tree. if I just call toString method I get something like Function1[Int,Int]. It is correct, but I want to have Int => Int. What is the best way to do it? I Looked into declaration printer, it heavily relies on Symbols (which are not available in parsed tree) and has to run on compiler thread. Is it possible to use declaration printer on any thread?

Indeed, the declaration printer is using Symbols so you won't be able to use it for parse trees. However, I think it does provide a good start for what cases need to be treated in a special way. Probably only a handful of cases FunctionN, TupleN come to mind.

iulian

Thank you,
Andrey

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