[wtp-dev] About parsing and conversion times

[Eugene Melekhov <emvv@xxxxxxx>]

Hi all,

I've posted some timings for esprima parsing tsserver.js and subsequent conversion resulting AST into JSDT ASTDom format
here https://bugs.eclipse.org/bugs/show_bug.cgi?id=490898

Angelo asked about testing parsing tsserver.js using Closure compiler, so I think it's worth presenting all
results for esprima and closure together. All results are in seconds.

Esprima on nashorn + JSDT Dom Conversion
=========================================
Parse   convert
10.738  7.854
18.736  8.316
12.929  5.261
-------
6.194  4.826
6.036  3.830
-------
4.562  4.982
4.675  3.942


Google closure parser + converting into Google's Internal Representation
=========================================
Parse  convert Total
0.620  0.260   0.880
  

At first I didn't belive it, so I used Google's Code Printer to print resulting
Internal Representation (after conversion from AST) to make sure that file was really parsed.
And it really was....

So, result speaks for himself.... :-)

That's why I think we should switch to closure and use its internal format.

Thanks.

-- 
Eugene Melekhov