Make "my $a will foo" die with a more awesome error message

rakudo · Jul 26, 2013 · 367739f · 367739f
1 parent 5622d4a
commit 367739f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/core/Variable.pm b/src/core/Variable.pm
@@ -34,6 +34,9 @@ multi trait_mod:<is>(Variable:D $v, :$dynamic!) {
 }
 
 # phaser traits
+multi trait_mod:<will>(Variable:D $v, $block, |c ) {
+    die "You can not 'will {c.hash.keys}' on a variable";
+}
 multi trait_mod:<will>(Variable:D $v, $block, :$begin! ) {
     $v.block.add_phaser('BEGIN', $block)
 }