add xor operator

src/parser.rs

@@ -63,6 +63,7 @@ pub struct Assign<'a> {
 pub enum Operation<'a> {
     And { a: Expression<'a>, b: Expression<'a> },
     Or { a: Expression<'a>, b: Expression<'a> },
+    Xor { a: Expression<'a>, b: Expression<'a> },
     Not(Expression<'a>),
 }
 
@@ -113,6 +114,13 @@ fn operation(input: Span) -> IResult<Span, Operation> {
                 b,
             },
         ),
+        map(
+            separated_pair(ws0(expression_nonrecurse), char('^'), ws0(expression)),
+            |(a, b)| Operation::Xor {
+                a,
+                b,
+            },
+        ),
         map(
             preceded(char('~'), expression),
             |expr| Operation::Not(expr),