| commit | 4273f66e9882f1239c6b7846c31730d47b870d81 | [log] [tgz] |
|---|---|---|
| author | rossberg <rossberg@chromium.org> | Wed Aug 05 12:00:41 2015 |
| committer | Commit bot <commit-bot@chromium.org> | Wed Aug 05 12:02:23 2015 |
| tree | dd489f78f99dcf954bf18213fb5f188dcfcd7740 | |
| parent | 41fad8dbe01639ff77874139d3ec7429dfac58b7 [diff] |
[es6] Implement proper TDZ for parameters
Previously, examples like (({a = x}, x) => {})({}, 0) did not throw a ReferenceError like they should. This CL
- Splits up DeclareFormalParameters such that the formals can be recorded first and declared later.
- Declaration then takes the complete parameter list into account. If it is not simple, temporaries are introduced for all parameters.
- BuildParameterInitializationBlock desugars all parameters from non-simple lists into let-bindings.
- Refactored Pre/ParserFormalParameters, so that the arity information is no longer duplicated in Parser.
- Rest is currently handled specially, until rest-via-destructuring has landed.
R=adamk@chromium.org, littledan@chromium.org
BUG=v8:811
LOG=N
Review URL: https://codereview.chromium.org/1259283002
Cr-Commit-Position: refs/heads/master@{#30025}
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