match optional +/- prefix

winnow-rs · Jan 2, 2024 · aede630 · aede630
1 parent 2ce3026
commit aede630
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/src/ascii/mod.rs b/src/ascii/mod.rs
@@ -15,6 +15,7 @@ use crate::error::{ErrMode, ErrorKind, Needed};
 use crate::stream::{AsBStr, AsChar, ParseSlice, Stream, StreamIsPartial};
 use crate::stream::{Compare, CompareResult};
 use crate::token::one_of;
+use crate::token::tag_no_case;
 use crate::token::take_till;
 use crate::token::take_while;
 use crate::trace::trace;
@@ -1366,9 +1367,9 @@ where
 {
     alt((
         recognize_float,
-        crate::token::tag_no_case("nan"),
-        crate::token::tag_no_case("infinity"),
-        crate::token::tag_no_case("inf"),
+        tag_no_case("nan"),
+        (opt(one_of(['+', '-'])), tag_no_case("infinity")).recognize(),
+        (opt(one_of(['+', '-'])), tag_no_case("inf")).recognize(),
     ))
     .parse_next(input)
 }