syntax: Factor out common fields from `SyntaxExtension` variants#61898

Merged

bors merged 8 commits intorust-lang:masterfrom petrochenkov:sekind

Jun 19, 2019

+379-513

Commits on Jun 18, 2019

syntax: Factor out common fields from SyntaxExtension variants
petrochenkov
committed
allow_internal_unstable: Avoid some more allocations
petrochenkov
committed
syntax: Remove DummyResolver
petrochenkov
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resolve: Avoid creating fresh syntax extensions for all non-macro attributes
petrochenkov
committed
syntax: Introduce default/with_unstable constructors for ExpnInfo
petrochenkov
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syntax: Move default_transparency into ExpnInfo
petrochenkov
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hygiene: Avoid some unnecessary ExpnInfo clones
petrochenkov
committed
resolve/expand: Move expansion info setting to a single earlier point
petrochenkov
committed