parse minus before number literal

2018-12-30 21:51:40 +08:00
parent e422c2e2f4
commit 53c94e3ad8
3 changed files with 51 additions and 33 deletions
--- a/crates/ra_syntax/src/grammar/patterns.rs
+++ b/crates/ra_syntax/src/grammar/patterns.rs
@@ -48,11 +48,16 @@ fn atom_pat(p: &mut Parser, recovery_set: TokenSet) -> Option<CompletedMarker> {
    // test literal_pattern
    // fn main() {
    //     match () {
+    //         -1 => (),
    //         92 => (),
    //         'c' => (),
    //         "hello" => (),
    //     }
    // }
+    if p.at(MINUS) && (p.nth(1) == INT_NUMBER || p.nth(1) == FLOAT_NUMBER) {
+        p.bump();
+    }
+
    if let Some(m) = expressions::literal(p) {
        return Some(m);
    }