[5.0-12-12-2018][Parse] Eliminate backtracking in collection expression parsing #21694
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Parsing collection literal expression used to take exponential time depending on the nesting level of the first element. Stop using 'parseList()' because using it complicates libSyntax parsing. rdar://problem/45221238 / https://bugs.swift.org/browse/SR-9220 rdar://problem/38913395 / https://bugs.swift.org/browse/SR-7283 (cherry picked from commit 7f57ad9)
akyrtzi
approved these changes
Jan 8, 2019
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(Cherry-pick of #21674 to swift-5.0-branch-12-12-2018)
Parsing collection literal expression used to take exponential time depending on the nesting level of the first element.
Stop using
parseList()because using it complicates libSyntax parsing.rdar://problem/45221238 / https://bugs.swift.org/browse/SR-9220
rdar://problem/38913395 / https://bugs.swift.org/browse/SR-7283