tree fe69cf46f5817a6bd3d8118f053ca1488be8923c
parent fb54e1bfe5d16b8b632e8bb2816fd84e53f87dfa
author Marcel van Lohuizen <mpvl@golang.org> 1582891391 +0100
committer Marcel van Lohuizen <mpvl@golang.org> 1583413857 +0000

cue: add __foo variants for predeclared identifiers

As `__foo` is an illegal field identifier, references
starting with `__` will always be referring to
predeclared identifiers when valid without fear
of shadowing. This simplifies code generation.

Change-Id: Ica1934df6d0716c34bfcc1756564a8da4f291a2c
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/5090
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>