Comment #49 on issue 811 by [email protected]: Implement destructuring
https://code.google.com/p/v8/issues/detail?id=811#c49
The following revision refers to this bug:
https://chromium.googlesource.com/v8/v8.git/+/4273f66e9882f1239c6b7846c31730d47b870d81
commit 4273f66e9882f1239c6b7846c31730d47b870d81
Author: rossberg <[email protected]>
Date: Wed Aug 05 12:00:41 2015
[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.
[email protected], [email protected]
BUG=v8:811
LOG=N
Review URL: https://codereview.chromium.org/1259283002
Cr-Commit-Position: refs/heads/master@{#30025}
[modify]
http://crrev.com/4273f66e9882f1239c6b7846c31730d47b870d81/src/parser.cc
[modify]
http://crrev.com/4273f66e9882f1239c6b7846c31730d47b870d81/src/parser.h
[modify]
http://crrev.com/4273f66e9882f1239c6b7846c31730d47b870d81/src/preparser.h
[modify]
http://crrev.com/4273f66e9882f1239c6b7846c31730d47b870d81/test/mjsunit/harmony/destructuring.js
[modify]
http://crrev.com/4273f66e9882f1239c6b7846c31730d47b870d81/test/test262-es6/test262-es6.status
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