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Removed 'proc' from the reserved keywords list #49699

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Merged
merged 4 commits into from
Apr 17, 2018
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Removed 'proc' from the reserved keywords list #49699

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446285e
Removed 'proc' from the reserved keywords list
zesterer Apr 5, 2018
5e94d54
Merge pull request #1 from rust-lang/master
zesterer Apr 5, 2018
16e75e3
Reenumerated symbols
zesterer Apr 11, 2018
7f58d2f
Removed proc test
zesterer Apr 11, 2018
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27 changes: 13 additions & 14 deletions src/libsyntax_pos/symbol.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -318,24 +318,23 @@ declare_keywords! {
(46, Offsetof, "offsetof")
(47, Override, "override")
(48, Priv, "priv")
(49, Proc, "proc")
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The keyword list shouldn't contain holes (otherwise random identifiers will be interpreted as keywords), so the numbers of following keywords have to be shifted by one.

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Ah, good catch. @zesterer?

(Also, I wonder if we could construct this list in another way so that it auto-numbers, eliminating this issue in the future.)

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@zesterer zesterer Apr 10, 2018 •
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@joshtriplett My experience with the compiler codebase is less than excellent. Is this the sort of thing that could be easily macro-driven?

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This is the only keyword removed in the last 3-4 years, certainly not something that need to be automated by extra macro machinery.

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@petrochenkov I may be over-thinking this. Is this literally just a case of enumerating everything that comes after the removed keyword?

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@zesterer
Yes

(50, Pure, "pure")
(51, Sizeof, "sizeof")
(52, Typeof, "typeof")
(53, Unsized, "unsized")
(54, Virtual, "virtual")
(55, Yield, "yield")
(49, Pure, "pure")
(50, Sizeof, "sizeof")
(51, Typeof, "typeof")
(52, Unsized, "unsized")
(53, Virtual, "virtual")
(54, Yield, "yield")

// Special lifetime names
(56, UnderscoreLifetime, "'_")
(57, StaticLifetime, "'static")
(55, UnderscoreLifetime, "'_")
(56, StaticLifetime, "'static")

// Weak keywords, have special meaning only in specific contexts.
(58, Auto, "auto")
(59, Catch, "catch")
(60, Default, "default")
(61, Dyn, "dyn")
(62, Union, "union")
(57, Auto, "auto")
(58, Catch, "catch")
(59, Default, "default")
(60, Dyn, "dyn")
(61, Union, "union")
}

// If an interner exists, return it. Otherwise, prepare a fresh one.
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19 changes: 0 additions & 19 deletions src/test/parse-fail/obsolete-proc.rs
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