This switches the parser to use token positions (i.e. {Position})
instead of stream positions (i.e. {GetPosition}) everywhere. Access to
the latter is being removed as it is unsupported when the scanner is in
rewind state anyways. This prevents "skipping" a token when seeking.
R=bradnelson@chromium.org
BUG=v8:6127
Change-Id: I9c13dd20a981061a2bccc4fb57e5c57d2a64ac5c
Reviewed-on: https://chromium-review.googlesource.com/480300
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44699}
Adding a custom lexer for asm.js parsing.
It takes advantage of a number of asm.js properties to simply things:
* Assumes 'use asm' is the only string.
* Does not handle unicode for now (tools don't emit it).
* Combines global + local string table with lexer.
R=marja@chromium.org,vogelheim@chromium.org,kschimpf@chromium.org
BUG=v8:4203
BUG=v8:6090
Review-Url: https://codereview.chromium.org/2751693002
Cr-Commit-Position: refs/heads/master@{#43874}
