[4/6] widl: Attributes of the alias are supposed to replace attributes of a tag in the typelib.

[Dmitry Timoshkov]

I have limited this functionality only to typedefs for structures, unions
and enums since I have the tests only for this types.

In practice this means that the difinitions in an .idl like

[uuid(016fe2ec-b2c8-45f8-b23b-39e53a753901),restricted]
struct _n { int n1; };
[uuid(016fe2ec-b2c8-45f8-b23b-39e53a753902),hidden]
typedef struct _n n;
[uuid(016fe2ec-b2c8-45f8-b23b-39e53a753903)]
typedef struct _n nn;

lead to the following typelib records:

{
  "_n",
  "{016fe2ec-b2c8-45f8-b23b-39e53a753903}",
  /*kind*/ TKIND_RECORD, /*flags*/ 0, /*align*/ 4, /*size*/ sizeof(struct _n),
  /*#vtbl*/ 0, /*#func*/ 0
},
{
  "n",
  "{016fe2ec-b2c8-45f8-b23b-39e53a753902}",
  /*kind*/ TKIND_ALIAS, /*flags*/ TYPEFLAG_FHIDDEN, /*align*/ 4, /*size*/ 4,
  /*#vtbl*/ 0, /*#func*/ 0
},
{
  "nn",
  "{00000000-0000-0000-0000-000000000000}",
  /*kind*/ TKIND_ALIAS, /*flags*/ 0, /*align*/ 4, /*size*/ 4,
  /*#vtbl*/ 0, /*#func*/ 0
}

and the tests confirm that. But this change is very specific to typelibs
and breaks header generation, thus it's limited only to the typelib mode.

Signed-off-by: Dmitry Timoshkov <dmitry at baikal.ru>
---
 tools/widl/parser.y | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/widl/parser.y b/tools/widl/parser.y
index db5897e..1bd9565 100644
--- a/tools/widl/parser.y
+++ b/tools/widl/parser.y
@@ -1893,6 +1893,10 @@ static type_t *reg_typedefs(decl_spec_t *decl_spec, declarator_list_t *decls, at
   {
     if (!type->name)
       type->name = gen_name();
+
+    /* replace exisitng attributes when generating a typelib */
+    if (do_typelib)
+        type->attrs = attrs;
   }
 
   LIST_FOR_EACH_ENTRY( decl, decls, const declarator_t, entry )
-- 
2.6.1