diff options
| author | Vadim Petrochenkov <vadim.petrochenkov@gmail.com> | 2019-09-22 18:38:02 +0300 |
|---|---|---|
| committer | Vadim Petrochenkov <vadim.petrochenkov@gmail.com> | 2019-10-03 11:28:06 +0300 |
| commit | d1310dc6c989e191d85c73c943d4175fbf1dccb8 (patch) | |
| tree | d0ca6fac9bdb651e328a8a6990c16208ad5dc43a /src/libproc_macro | |
| parent | c6293e359848c8c7275330719b33ccd168df04c3 (diff) | |
proc_macro: Add `Span::mixed_site` exposing `macro_rules` hygiene
Diffstat (limited to 'src/libproc_macro')
| -rw-r--r-- | src/libproc_macro/bridge/mod.rs | 1 | ||||
| -rw-r--r-- | src/libproc_macro/lib.rs | 9 |
2 files changed, 10 insertions, 0 deletions
diff --git a/src/libproc_macro/bridge/mod.rs b/src/libproc_macro/bridge/mod.rs index 3c48466fffa..c26b59f473c 100644 --- a/src/libproc_macro/bridge/mod.rs +++ b/src/libproc_macro/bridge/mod.rs @@ -148,6 +148,7 @@ macro_rules! with_api { fn debug($self: $S::Span) -> String; fn def_site() -> $S::Span; fn call_site() -> $S::Span; + fn mixed_site() -> $S::Span; fn source_file($self: $S::Span) -> $S::SourceFile; fn parent($self: $S::Span) -> Option<$S::Span>; fn source($self: $S::Span) -> $S::Span; diff --git a/src/libproc_macro/lib.rs b/src/libproc_macro/lib.rs index d5cdc266acb..e199670b561 100644 --- a/src/libproc_macro/lib.rs +++ b/src/libproc_macro/lib.rs @@ -271,6 +271,15 @@ impl Span { Span(bridge::client::Span::call_site()) } + /// A span that represents `macro_rules` hygiene, and sometimes resolves at the macro + /// definition site (local variables, labels, `$crate`) and sometimes at the macro + /// call site (everything else). + /// The span location is taken from the call-site. + #[unstable(feature = "proc_macro_mixed_site", issue = "65049")] + pub fn mixed_site() -> Span { + Span(bridge::client::Span::mixed_site()) + } + /// The original source file into which this span points. #[unstable(feature = "proc_macro_span", issue = "54725")] pub fn source_file(&self) -> SourceFile { |