Reviewers: adamk,
Description:
Add a separate scope for switch
The ES2015 specification for switch statements 13.12.11 specifies that
they get their own lexical scope. This patch introduces such a scope
through a complex desugaring in terms of blocks, done so that Crankshaft
does not have to be updated to support multiple constructs providing
scopes.
BUG=v8:4377
LOG=Y
R=adamk
Please review this at https://codereview.chromium.org/1293283002/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+117, -20 lines):
M src/ast-value-factory.h
M src/parser.h
M src/parser.cc
A test/mjsunit/regress/regress-4377.js
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