diff options
author | Edwin Cheng <[email protected]> | 2021-01-08 06:00:16 +0000 |
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committer | Edwin Cheng <[email protected]> | 2021-01-08 06:00:16 +0000 |
commit | 74a24adc8ecc8bded9d24ccede171da188696122 (patch) | |
tree | 7c03a87334ba6be2a7adc5d311c6f0adddb09dae /crates/mbe/src/mbe_expander/transcriber.rs | |
parent | 1a29934c37cf4ffa2b269c39a25245e58d3916d5 (diff) |
Fix bug when $crate in LHS in mbe
Diffstat (limited to 'crates/mbe/src/mbe_expander/transcriber.rs')
-rw-r--r-- | crates/mbe/src/mbe_expander/transcriber.rs | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/crates/mbe/src/mbe_expander/transcriber.rs b/crates/mbe/src/mbe_expander/transcriber.rs index 57f3f104d..27b2ac777 100644 --- a/crates/mbe/src/mbe_expander/transcriber.rs +++ b/crates/mbe/src/mbe_expander/transcriber.rs | |||
@@ -119,11 +119,10 @@ fn expand_subtree( | |||
119 | } | 119 | } |
120 | 120 | ||
121 | fn expand_var(ctx: &mut ExpandCtx, v: &SmolStr, id: tt::TokenId) -> ExpandResult<Fragment> { | 121 | fn expand_var(ctx: &mut ExpandCtx, v: &SmolStr, id: tt::TokenId) -> ExpandResult<Fragment> { |
122 | if v == "crate" { | 122 | // We already handle $crate case in mbe parser |
123 | // We simply produce identifier `$crate` here. And it will be resolved when lowering ast to Path. | 123 | debug_assert!(v != "crate"); |
124 | let tt = tt::Leaf::from(tt::Ident { text: "$crate".into(), id }).into(); | 124 | |
125 | ExpandResult::ok(Fragment::Tokens(tt)) | 125 | if !ctx.bindings.contains(v) { |
126 | } else if !ctx.bindings.contains(v) { | ||
127 | // Note that it is possible to have a `$var` inside a macro which is not bound. | 126 | // Note that it is possible to have a `$var` inside a macro which is not bound. |
128 | // For example: | 127 | // For example: |
129 | // ``` | 128 | // ``` |