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librustc: Implement simple where clauses.

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These `where` clauses are accepted everywhere generics are currently
accepted and desugar during type collection to the type parameter bounds
we have today.

A new keyword, `where`, has been added. Therefore, this is a breaking
change. Change uses of `where` to other identifiers.

[breaking-change]
This commit is contained in:
Patrick Walton 2014-08-11 09:32:26 -07:00
parent a8c8e3f80f
commit 604af3f6c0
25 changed files with 626 additions and 207 deletions
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21
src/libsyntax/parse/token.rs
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@ -499,18 +499,19 @@ declare_special_idents_and_keywords! {
(41, Proc, "proc");
(42, Box, "box");
(43, Const, "const");
(44, Where, "where");
'reserved:
(44, Alignof, "alignof");
(45, Be, "be");
(46, Offsetof, "offsetof");
(47, Priv, "priv");
(48, Pure, "pure");
(49, Sizeof, "sizeof");
(50, Typeof, "typeof");
(51, Unsized, "unsized");
(52, Yield, "yield");
(53, Do, "do");
(45, Alignof, "alignof");
(46, Be, "be");
(47, Offsetof, "offsetof");
(48, Priv, "priv");
(49, Pure, "pure");
(50, Sizeof, "sizeof");
(51, Typeof, "typeof");
(52, Unsized, "unsized");
(53, Yield, "yield");
(54, Do, "do");
}
}