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| author | Tim Neumann <mail@timnn.me> | 2015-08-10 20:40:46 +0200 |
|---|---|---|
| committer | Tim Neumann <mail@timnn.me> | 2015-08-10 20:43:11 +0200 |
| commit | d46e84081f88f22198fbfcd5221faaf922e0500d (patch) | |
| tree | 81c9a3bbaab8586673d96f05ba5bb7822fe1d9a3 /src/libsyntax/codemap.rs | |
| parent | c115c513632b45d1a4d1b3fb648755a7023269e7 (diff) | |
| download | rust-d46e84081f88f22198fbfcd5221faaf922e0500d.tar.gz rust-d46e84081f88f22198fbfcd5221faaf922e0500d.zip | |
add and use Span.substitute_dummy method
Diffstat (limited to 'src/libsyntax/codemap.rs')
| -rw-r--r-- | src/libsyntax/codemap.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/libsyntax/codemap.rs b/src/libsyntax/codemap.rs index 17e6b2c2e12..0aeb572b6bc 100644 --- a/src/libsyntax/codemap.rs +++ b/src/libsyntax/codemap.rs @@ -135,6 +135,13 @@ pub const COMMAND_LINE_SP: Span = Span { lo: BytePos(0), hi: BytePos(0), expn_id: COMMAND_LINE_EXPN }; +impl Span { + /// Returns `self` if `self` is not the dummy span, and `other` otherwise. + pub fn substitute_dummy(self, other: Span) -> Span { + if self == DUMMY_SP { other } else { self } + } +} + #[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug, Copy)] pub struct Spanned<T> { pub node: T, |