parse: unify function front matter parsing - #69023

Merged

bors merged 13 commits into

rust-lang:masterfrom

Centril:parse_fn

Feb 13, 2020

Commits on Feb 13, 2020

Constness -> enum Const { Yes(Span), No }
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e839b2e
IsAsync -> enum Async { Yes { span: Span, .. }, No }
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c30f068
parser_fn_front_matter: allow `const .. extern`
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36a17e4
parser: fuse free `fn` parsing together.
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a833be2
parser: solidify `fn` parsing with `parse_fn`.
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b05e9d2
parser: inline `parse_assoc_fn` and friends.
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0425379
parser: move `ban_async_in_2015` to `fn` parsing & improve it.
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cdbbc25
parser: address review comments
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05e5530
parser: simplify ParamCfg -> ReqName
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79d139a
ast_validation: tweak diagnostic output
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3341c94
rustc_bulltin_macros: tweak span_labels
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27f6090
parser: add test for 'extern crate async'
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4ca3bbf
parser: is_fn_front_matter -> check_fn_front_matter
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9828559