Parse raw address expression syntax

Author: dtolnay

src/ensure.rs

@@ -155,6 +155,14 @@ macro_rules! __parse_ensure {
         $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and $mut) $($parse)*} ($($rest)*) $($rest)*)
     };
 
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $raw:tt $mut:tt $($dup:tt)*) &raw mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and $raw $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $raw:tt $const:tt $($dup:tt)*) &raw const $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and $raw $const) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
     (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($and:tt $($dup:tt)*) & $($rest:tt)*) => {
         $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $and) $($parse)*} ($($rest)*) $($rest)*)
     };
@@ -163,6 +171,14 @@ macro_rules! __parse_ensure {
         $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand $mut) $($parse)*} ($($rest)*) $($rest)*)
     };
 
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $raw:tt $mut:tt $($dup:tt)*) &&raw mut $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand $raw $mut) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
+    (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $raw:tt $const:tt $($dup:tt)*) &&raw const $($rest:tt)*) => {
+        $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand $raw $const) $($parse)*} ($($rest)*) $($rest)*)
+    };
+
     (0 $stack:tt $bail:tt (~$($fuel:tt)*) {($($buf:tt)*) $($parse:tt)*} ($andand:tt $($dup:tt)*) && $($rest:tt)*) => {
         $crate::__parse_ensure!(0 $stack $bail ($($fuel)*) {($($buf)* $andand) $($parse)*} ($($rest)*) $($rest)*)
     };

tests/test_ensure.rs

@@ -188,7 +188,7 @@ fn test_unary() {
     let test = || Ok(ensure!(S + &raw const x != S + &raw mut x));
     assert_err(
         test,
-        "Condition failed: `S + &raw const x != S + &raw mut x`", // FIXME
+        "Condition failed: `S + &raw const x != S + &raw mut x` (false vs false)",
     );
 }