src/test/ui/parser/default-on-wrong-item-kind.rs

   1 // Test parsing for `default` where it doesn't belong.
   2 // Specifically, we are interested in kinds of items or items in certain contexts.
   3 // Also test item kinds in `extern` blocks and associated contexts which are not allowed there.
   4
   5 fn main() {}
   6
   7 #[cfg(FALSE)]
   8 mod free_items {
   9     default extern crate foo; //~ ERROR an extern crate cannot be `default`
  10     default use foo; //~ ERROR a `use` import cannot be `default`
  11     default static foo: u8; //~ ERROR a static item cannot be `default`
  12     default const foo: u8;
  13     default fn foo();
  14     default mod foo {} //~ ERROR a module cannot be `default`
  15     default extern "C" {} //~ ERROR an extern block cannot be `default`
  16     default type foo = u8;
  17     default enum foo {} //~ ERROR an enum cannot be `default`
  18     default struct foo {} //~ ERROR a struct cannot be `default`
  19     default union foo {} //~ ERROR a union cannot be `default`
  20     default trait foo {} //~ ERROR a trait cannot be `default`
  21     default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
  22     default impl foo {}
  23     default!();
  24     default::foo::bar!();
  25     default default!(); //~ ERROR an item macro invocation cannot be `default`
  26     default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
  27     default macro foo {} //~ ERROR a macro definition cannot be `default`
  28     default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
  29 }
  30
  31 #[cfg(FALSE)]
  32 extern "C" {
  33     default extern crate foo; //~ ERROR an extern crate cannot be `default`
  34     //~^ ERROR extern crate is not supported in `extern` blocks
  35     default use foo; //~ ERROR a `use` import cannot be `default`
  36     //~^ ERROR `use` import is not supported in `extern` blocks
  37     default static foo: u8; //~ ERROR a static item cannot be `default`
  38     default const foo: u8;
  39     //~^ ERROR extern items cannot be `const`
  40     default fn foo();
  41     default mod foo {} //~ ERROR a module cannot be `default`
  42     //~^ ERROR module is not supported in `extern` blocks
  43     default extern "C" {} //~ ERROR an extern block cannot be `default`
  44     //~^ ERROR extern block is not supported in `extern` blocks
  45     default type foo = u8;
  46     default enum foo {} //~ ERROR an enum cannot be `default`
  47     //~^ ERROR enum is not supported in `extern` blocks
  48     default struct foo {} //~ ERROR a struct cannot be `default`
  49     //~^ ERROR struct is not supported in `extern` blocks
  50     default union foo {} //~ ERROR a union cannot be `default`
  51     //~^ ERROR union is not supported in `extern` blocks
  52     default trait foo {} //~ ERROR a trait cannot be `default`
  53     //~^ ERROR trait is not supported in `extern` blocks
  54     default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
  55     //~^ ERROR trait alias is not supported in `extern` blocks
  56     default impl foo {}
  57     //~^ ERROR implementation is not supported in `extern` blocks
  58     default!();
  59     default::foo::bar!();
  60     default default!(); //~ ERROR an item macro invocation cannot be `default`
  61     default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
  62     default macro foo {} //~ ERROR a macro definition cannot be `default`
  63     //~^ ERROR macro definition is not supported in `extern` blocks
  64     default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
  65     //~^ ERROR macro definition is not supported in `extern` blocks
  66 }
  67
  68 #[cfg(FALSE)]
  69 impl S {
  70     default extern crate foo; //~ ERROR an extern crate cannot be `default`
  71     //~^ ERROR extern crate is not supported in `trait`s or `impl`s
  72     default use foo; //~ ERROR a `use` import cannot be `default`
  73     //~^ ERROR `use` import is not supported in `trait`s or `impl`s
  74     default static foo: u8; //~ ERROR a static item cannot be `default`
  75     //~^ ERROR associated `static` items are not allowed
  76     default const foo: u8;
  77     default fn foo();
  78     default mod foo {}//~ ERROR a module cannot be `default`
  79     //~^ ERROR module is not supported in `trait`s or `impl`s
  80     default extern "C" {} //~ ERROR an extern block cannot be `default`
  81     //~^ ERROR extern block is not supported in `trait`s or `impl`s
  82     default type foo = u8;
  83     default enum foo {} //~ ERROR an enum cannot be `default`
  84     //~^ ERROR enum is not supported in `trait`s or `impl`s
  85     default struct foo {} //~ ERROR a struct cannot be `default`
  86     //~^ ERROR struct is not supported in `trait`s or `impl`s
  87     default union foo {} //~ ERROR a union cannot be `default`
  88     //~^ ERROR union is not supported in `trait`s or `impl`s
  89     default trait foo {} //~ ERROR a trait cannot be `default`
  90     //~^ ERROR trait is not supported in `trait`s or `impl`s
  91     default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
  92     //~^ ERROR trait alias is not supported in `trait`s or `impl`s
  93     default impl foo {}
  94     //~^ ERROR implementation is not supported in `trait`s or `impl`s
  95     default!();
  96     default::foo::bar!();
  97     default default!(); //~ ERROR an item macro invocation cannot be `default`
  98     default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
  99     default macro foo {} //~ ERROR a macro definition cannot be `default`
 100     //~^ ERROR macro definition is not supported in `trait`s or `impl`s
 101     default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
 102     //~^ ERROR macro definition is not supported in `trait`s or `impl`s
 103 }
 104
 105 #[cfg(FALSE)]
 106 trait T {
 107     default extern crate foo; //~ ERROR an extern crate cannot be `default`
 108     //~^ ERROR extern crate is not supported in `trait`s or `impl`s
 109     default use foo; //~ ERROR a `use` import cannot be `default`
 110     //~^ ERROR `use` import is not supported in `trait`s or `impl`s
 111     default static foo: u8; //~ ERROR a static item cannot be `default`
 112     //~^ ERROR associated `static` items are not allowed
 113     default const foo: u8;
 114     default fn foo();
 115     default mod foo {}//~ ERROR a module cannot be `default`
 116     //~^ ERROR module is not supported in `trait`s or `impl`s
 117     default extern "C" {} //~ ERROR an extern block cannot be `default`
 118     //~^ ERROR extern block is not supported in `trait`s or `impl`s
 119     default type foo = u8;
 120     default enum foo {} //~ ERROR an enum cannot be `default`
 121     //~^ ERROR enum is not supported in `trait`s or `impl`s
 122     default struct foo {} //~ ERROR a struct cannot be `default`
 123     //~^ ERROR struct is not supported in `trait`s or `impl`s
 124     default union foo {} //~ ERROR a union cannot be `default`
 125     //~^ ERROR union is not supported in `trait`s or `impl`s
 126     default trait foo {} //~ ERROR a trait cannot be `default`
 127     //~^ ERROR trait is not supported in `trait`s or `impl`s
 128     default trait foo = Ord; //~ ERROR a trait alias cannot be `default`
 129     //~^ ERROR trait alias is not supported in `trait`s or `impl`s
 130     default impl foo {}
 131     //~^ ERROR implementation is not supported in `trait`s or `impl`s
 132     default!();
 133     default::foo::bar!();
 134     default default!(); //~ ERROR an item macro invocation cannot be `default`
 135     default default::foo::bar!(); //~ ERROR an item macro invocation cannot be `default`
 136     default macro foo {} //~ ERROR a macro definition cannot be `default`
 137     //~^ ERROR macro definition is not supported in `trait`s or `impl`s
 138     default macro_rules! foo {} //~ ERROR a macro definition cannot be `default`
 139     //~^ ERROR macro definition is not supported in `trait`s or `impl`s
 140 }