Parse speed up

[jman116]

Had some free time today to mess with the parsing. My company is on a Power 9 and the dev LPAR is 2 core with 80GB memory...

BIGPGM123R is so large, it usually hits compiler limits. It has over 300 copybooks, many /IF DEFINED and /DEFINE, and nearly 300 F-spec statements. So, it's a great extreme test for the parser.

33.9-Dev:
[09:30:16.864] [DEBUG] Parse started: BIGPGM123R.RPGLE (parseId: 2)
[10:57:50.367] [INFO] Parse completed: BIGPGM123R.RPGLE (parseId: 2, 5253503ms, diagnostics updated)

New version:

[11:17:12.253] [DEBUG] Parse started: BIGPGM123R.RPGLE (parseId: 1)

[11:19:32.673] [INFO] Parse completed: BIGPGM123R.RPGLE (parseId: 1, 140419ms, diagnostics updated)

So... definite speed increase! I will make a pull request once it's all cleaned up, I'm not much of a javascript developer! Also I need to run it for a while to make sure it's all accurate, but it should be!