#data
interface mixin Foo { };
#errors
#parsed
{
  "definitions" : [
    {
      "index": 0,
      "definition_type": "interface",
      "mixin": 1,
      "name": "Foo",
      "members": []
    }
  ]
}

#data
[Exposed=(Window)]
interface mixin Foo { };
#errors
#parsed
{
  "definitions" : [
    {
      "index": 0,
      "definition_type": "interface",
      "mixin": 1,
      "name": "Foo",
      "members": [],
      "extended_attributes": [
        {
          "index": 1,
          "name": "Exposed",
          "value_names": ["Window"]          
        }
      ]
    }
  ]
}

#data
interface mixin Foo {
  const long bar = 4;
  void baz ();
  attribute DOMString x;
};
#errors
#parsed
{
  "definitions" : [
    {
      "index": 0,
      "definition_type": "interface",
      "mixin": 1,
      "name": "Foo",
      "members": [
        {"index": 24, "member_type": "const", "name": "bar",
         "type": "long", "value_integer": 4},
        {"index": 46, "member_type": "operation", "name": "baz",
         "arguments": [], "type": "void"},
        {"index": 61, "member_type": "attribute", "name": "x",
         "type": "DOMString"}
      ]
    }
  ]
}

#data
interface mixin Foo : Bar { };
#errors
20;webidl:parse error;{, ;;m

#data
callback interface mixin Foo  { };
#errors
19;webidl:parse error;[, ;;m

#data
partial interface mixin Foo { };
#errors
#parsed
{
  "definitions" : [
    {
      "index": 0,
      "definition_type": "interface",
      "mixin": 1,
      "partial": 1,
      "name": "Foo",
      "members": []
    }
  ]
}