diff options
Diffstat (limited to 'tests/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs')
-rw-r--r-- | tests/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tests/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs b/tests/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs new file mode 100644 index 000000000..6a0d68bd6 --- /dev/null +++ b/tests/ui/macros/rfc-3086-metavar-expr/out-of-bounds-arguments.rs @@ -0,0 +1,43 @@ +#![feature(macro_metavar_expr)] + +macro_rules! a { + ( $( { $( [ $( ( $( $foo:ident )* ) )* ] )* } )* ) => { + ( + ${count(foo, 0)}, + ${count(foo, 10)}, + //~^ ERROR depth parameter on meta-variable expression `count` must be less than 4 + ) + }; +} + +macro_rules! b { + ( $( { $( [ $( $foo:ident )* ] )* } )* ) => { + ( + $( $( $( + ${ignore(foo)} + ${index(0)}, + ${index(10)}, + //~^ ERROR depth parameter on meta-variable expression `index` must be less than 3 + )* )* )* + ) + }; +} + +macro_rules! c { + ( $( { $( $foo:ident )* } )* ) => { + ( + $( $( + ${ignore(foo)} + ${length(0)} + ${length(10)} + //~^ ERROR depth parameter on meta-variable expression `length` must be less than 2 + )* )* + ) + }; +} + +fn main() { + a!( { [ (a) ] [ (b c) ] } ); + b!( { [ a b ] } ); + c!({ a }); +} |