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extending FOLLOW(NT) as specified in amendment.

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See RFC amendment 1384:

  https://github.com/rust-lang/rfcs/pull/1384
This commit is contained in:
Felix S. Klock II 2015-11-18 00:17:48 +01:00
parent 076e64475a
commit 3703ef5820
1 changed files with 7 additions and 4 deletions
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11
src/libsyntax/ext/tt/macro_rules.rs
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@ -997,15 +997,18 @@ fn is_in_follow(_: &ExtCtxt, tok: &Token, frag: &str) -> Result<bool, String> {
},
"pat" => {
match *tok {
FatArrow | Comma | Eq => Ok(true),
Ident(i, _) if i.name.as_str() == "if" || i.name.as_str() == "in" => Ok(true),
FatArrow | Comma | Eq | BinOp(token::Or) => Ok(true),
Ident(i, _) if (i.name.as_str() == "if" ||
i.name.as_str() == "in") => Ok(true),
_ => Ok(false)
}
},
"path" | "ty" => {
match *tok {
Comma | FatArrow | Colon | Eq | Gt | Semi => Ok(true),
Ident(i, _) if i.name.as_str() == "as" => Ok(true),
OpenDelim(token::DelimToken::Brace) |
Comma | FatArrow | Colon | Eq | Gt | Semi | BinOp(token::Or) => Ok(true),
Ident(i, _) if (i.name.as_str() == "as" ||
i.name.as_str() == "where") => Ok(true),
_ => Ok(false)
}
},