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Ran 22 Sep 2016 07:12PM UTC

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Committed 22 Sep 2016 07:09PM UTC coverage: 97.699% (+0.005%) from 97.694%

Job # 2521.1

Build Type

push

travis-ci

Committed by

rwaldron

Commit Message

Fix for gh-3013 (#3016)

* [[CHORE]] Remove `lex.start` method

This method simply proxies `lex.nextLine` to scan a single line of the
program. It is currently only used to scan the very first line of input,
which is problematic for two reasons:

1. Linting options have not yet been applied via the `assume` function,
   so linting options that effect the parser's behavior are not honored
   for this first line (see the unit test corrected in this patch for an
   example)
2. So-called "checks" for asynchronously-reported warnings on the first
   line cannot be associated with a token. This makes it impossible to
   issue warnings asynchronously for the first line.

Because the `lex.token` method itself invokes `lex.nextLine`, these
problems may be avoided by removing `lex.start` and deferring the
invocation of `nextLine` until the first token is requested.

* [[FIX]] Allow W100 to be ignored during lookahead

Defer the reporting of warning W100 until parse time (using
`triggerAsync`) so that it may be disabled via in-line directives even
in contexts where a "lookahead" is taking place.

* fixup! [[FIX]] Allow W100 to be ignored during lookahead

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