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methods: allow multiple self kinds for "is_" methods

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These can be static method predicates.  (Found one in rust-copperline,
called Term::is_unsupported_term().)
This commit is contained in:
Georg Brandl 2015-09-02 17:14:23 +02:00
parent 2e7496ae7c
commit 6b589681c9
1 changed files with 11 additions and 9 deletions
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20
src/methods.rs
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@ -88,12 +88,14 @@ impl LintPass for MethodsPass {
}
}
// check conventions w.r.t. conversion method names and predicates
for &(prefix, self_kind) in &CONVENTIONS {
let is_copy = is_copy(cx, &ty, &item);
for &(prefix, self_kinds) in &CONVENTIONS {
if name.as_str().starts_with(prefix) &&
!self_kind.matches(&sig.explicit_self.node, is_copy(cx, &ty, &item)) {
!self_kinds.iter().any(|k| k.matches(&sig.explicit_self.node, is_copy)) {
span_lint(cx, WRONG_SELF_CONVENTION, sig.explicit_self.span, &format!(
"methods called `{}*` usually take {}; consider choosing a less \
ambiguous name", prefix, self_kind.description()));
ambiguous name", prefix,
&self_kinds.iter().map(|k| k.description()).collect::<Vec<_>>().join(" or ")));
}
}
}
@ -102,12 +104,12 @@ impl LintPass for MethodsPass {
}
}
const CONVENTIONS: [(&'static str, SelfKind); 5] = [
("into_", ValueSelf),
("to_", RefSelf),
("as_", RefSelf),
("is_", RefSelf),
("from_", NoSelf),
const CONVENTIONS: [(&'static str, &'static [SelfKind]); 5] = [
("into_", &[ValueSelf]),
("to_", &[RefSelf]),
("as_", &[RefSelf]),
("is_", &[RefSelf, NoSelf]),
("from_", &[NoSelf]),
];
const TRAIT_METHODS: [(&'static str, usize, SelfKind, OutType, &'static str); 30] = [