Add boolean xor operator and readjust % precedence.

RELEASES.md

@@ -15,6 +15,7 @@ Breaking changes
 
 * `EvalAltResult::ErrorMismatchOutputType` has an extra argument containing the name of the requested type.
 * `Engine::call_fn_dynamic` take an extra argument, allowing a `Dynamic` value to be bound to the `this` pointer.
+* Precedence of the `%` (modulo) operator is lowered to below `<<` ad `>>`. This is to handle the case of `x << 3 % 10`.
 
 New features
 ------------
@@ -25,6 +26,7 @@ New features
 * `Engine::register_custom_operator` to define a custom operator.
 * New low-level API `Engine::register_raw_fn`.
 * `AST::clone_functions_only`, `AST::clone_functions_only_filtered` and `AST::clone_statements_only` to clone only part of an `AST`.
+* The boolean `^` (XOR) operator is added.
 
 
 Version 0.16.1

src/engine.rs

@@ -2444,6 +2444,7 @@ fn run_builtin_binary_op(
         match op {
             "&" => return Ok(Some((x && y).into())),
             "|" => return Ok(Some((x || y).into())),
+            "^" => return Ok(Some((x ^ y).into())),
             "==" => return Ok(Some((x == y).into())),
             "!=" => return Ok(Some((x != y).into())),
             _ => (),

src/token.rs

@@ -394,18 +394,17 @@ impl Token {
 
             And | Ampersand => 60,
 
-            LessThan | LessThanEqualsTo | GreaterThan | GreaterThanEqualsTo | EqualsTo
-            | NotEqualsTo => 90,
+            EqualsTo | NotEqualsTo => 90,
 
-            In => 110,
+            LessThan | LessThanEqualsTo | GreaterThan | GreaterThanEqualsTo => 110,
 
-            Plus | Minus => 130,
+            In => 130,
 
-            Divide | Multiply | PowerOf => 160,
+            Plus | Minus => 150,
 
-            LeftShift | RightShift => 190,
+            Divide | Multiply | PowerOf | Modulo => 180,
 
-            Modulo => 210,
+            LeftShift | RightShift => 210,
 
             Period => 240,