widl: Added support for nameless structs and unions.

include/winnt.h

@@ -245,8 +245,24 @@ extern "C" {
 #define DUMMYUNIONNAME8  u8
 #endif /* !defined(NONAMELESSUNION) */
 
-#ifndef __C89_NAMELESS
-# if !defined(__WINESRC__) && !defined(WINE_NO_NAMELESS_EXTENSION)
+#undef __C89_NAMELESS
+#undef __C89_NAMELESSSTRUCTNAME
+#undef __C89_NAMELESSSTRUCTNAME1
+#undef __C89_NAMELESSSTRUCTNAME2
+#undef __C89_NAMELESSSTRUCTNAME3
+#undef __C89_NAMELESSSTRUCTNAME4
+#undef __C89_NAMELESSSTRUCTNAME5
+#undef __C89_NAMELESSUNIONNAME
+#undef __C89_NAMELESSUNIONNAME1
+#undef __C89_NAMELESSUNIONNAME2
+#undef __C89_NAMELESSUNIONNAME3
+#undef __C89_NAMELESSUNIONNAME4
+#undef __C89_NAMELESSUNIONNAME5
+#undef __C89_NAMELESSUNIONNAME6
+#undef __C89_NAMELESSUNIONNAME7
+#undef __C89_NAMELESSUNIONNAME8
+
+#if !defined(__WINESRC__) && !defined(WINE_NO_NAMELESS_EXTENSION)
 # ifdef __GNUC__
    /* Anonymous structs support starts with gcc 2.96/g++ 2.95 */
 #  if (__GNUC__ > 2) || ((__GNUC__ == 2) && ((__GNUC_MINOR__ > 95) || ((__GNUC_MINOR__ == 95) && defined(__cplusplus))))
@@ -255,16 +271,41 @@ extern "C" {
 # elif defined(_MSC_VER)
 #  define __C89_NAMELESS
 # endif
-# endif
 #endif
 
 #ifdef __C89_NAMELESS
 #  define __C89_NAMELESSSTRUCTNAME
+#  define __C89_NAMELESSSTRUCTNAME1
+#  define __C89_NAMELESSSTRUCTNAME2
+#  define __C89_NAMELESSSTRUCTNAME3
+#  define __C89_NAMELESSSTRUCTNAME4
+#  define __C89_NAMELESSSTRUCTNAME5
 #  define __C89_NAMELESSUNIONNAME
+#  define __C89_NAMELESSUNIONNAME1
+#  define __C89_NAMELESSUNIONNAME2
+#  define __C89_NAMELESSUNIONNAME3
+#  define __C89_NAMELESSUNIONNAME4
+#  define __C89_NAMELESSUNIONNAME5
+#  define __C89_NAMELESSUNIONNAME6
+#  define __C89_NAMELESSUNIONNAME7
+#  define __C89_NAMELESSUNIONNAME8
 #else
 #  define __C89_NAMELESS
 #  define __C89_NAMELESSSTRUCTNAME DUMMYSTRUCTNAME
+#  define __C89_NAMELESSSTRUCTNAME1 DUMMYSTRUCTNAME1
+#  define __C89_NAMELESSSTRUCTNAME2 DUMMYSTRUCTNAME2
+#  define __C89_NAMELESSSTRUCTNAME3 DUMMYSTRUCTNAME3
+#  define __C89_NAMELESSSTRUCTNAME4 DUMMYSTRUCTNAME4
+#  define __C89_NAMELESSSTRUCTNAME5 DUMMYSTRUCTNAME5
 #  define __C89_NAMELESSUNIONNAME DUMMYUNIONNAME
+#  define __C89_NAMELESSUNIONNAME1 DUMMYUNIONNAME1
+#  define __C89_NAMELESSUNIONNAME2 DUMMYUNIONNAME2
+#  define __C89_NAMELESSUNIONNAME3 DUMMYUNIONNAME3
+#  define __C89_NAMELESSUNIONNAME4 DUMMYUNIONNAME4
+#  define __C89_NAMELESSUNIONNAME5 DUMMYUNIONNAME5
+#  define __C89_NAMELESSUNIONNAME6 DUMMYUNIONNAME6
+#  define __C89_NAMELESSUNIONNAME7 DUMMYUNIONNAME7
+#  define __C89_NAMELESSUNIONNAME8 DUMMYUNIONNAME8
 #endif
 
 /* C99 restrict support */

tools/widl/header.c

@@ -167,21 +167,67 @@ const char *get_name(const var_t *v)
     return buffer;
 }
 
-static void write_field(FILE *h, var_t *v)
-{
-  if (!v) return;
-  if (v->type) {
-    indent(h, 0);
-    write_type_def_or_decl(h, v->type, TRUE, v->name);
-    fprintf(h, ";\n");
-  }
-}
-
 static void write_fields(FILE *h, var_list_t *fields)
 {
+    unsigned nameless_struct_cnt = 0, nameless_struct_i = 0, nameless_union_cnt = 0, nameless_union_i = 0;
+    const char *name;
+    char buf[32];
     var_t *v;
+
     if (!fields) return;
-    LIST_FOR_EACH_ENTRY( v, fields, var_t, entry ) write_field(h, v);
+
+    LIST_FOR_EACH_ENTRY( v, fields, var_t, entry ) {
+        if (!v || !v->type) continue;
+
+        switch(type_get_type_detect_alias(v->type)) {
+        case TYPE_STRUCT:
+        case TYPE_ENCAPSULATED_UNION:
+            nameless_struct_cnt++;
+            break;
+        case TYPE_UNION:
+            nameless_union_cnt++;
+            break;
+        default:
+            ;
+        }
+    }
+
+    LIST_FOR_EACH_ENTRY( v, fields, var_t, entry ) {
+        if (!v || !v->type) continue;
+
+        indent(h, 0);
+        name = v->name;
+
+        switch(type_get_type_detect_alias(v->type)) {
+        case TYPE_STRUCT:
+        case TYPE_ENCAPSULATED_UNION:
+            if(!v->name) {
+                fprintf(h, "__C89_NAMELESS ");
+                if(nameless_struct_cnt == 1) {
+                    name = "__C89_NAMELESSSTRUCTNAME";
+                }else if(nameless_struct_i < 5 /* # of supporting macros */) {
+                    sprintf(buf, "__C89_NAMELESSSTRUCTNAME%d", ++nameless_struct_i);
+                    name = buf;
+                }
+            }
+            break;
+        case TYPE_UNION:
+            if(!v->name) {
+                fprintf(h, "__C89_NAMELESS ");
+                if(nameless_union_cnt == 1) {
+                    name = "__C89_NAMELESSUNIONNAME";
+                }else if(nameless_union_i < 8 /* # of supporting macros */ ) {
+                    sprintf(buf, "__C89_NAMELESSUNIONNAME%d", ++nameless_union_i);
+                    name = buf;
+                }
+            }
+            break;
+        default:
+            ;
+        }
+        write_type_def_or_decl(h, v->type, TRUE, name);
+        fprintf(h, ";\n");
+    }
 }
 
 static void write_enums(FILE *h, var_list_t *enums)

tools/widl/parser.y

@@ -740,6 +740,10 @@ s_field:  m_attributes decl_spec declarator	{ $$ = declare_var(check_field_attrs
 						                $2, $3, FALSE);
 						  free($3);
 						}
+	| m_attributes structdef		{ var_t *v = make_var(NULL);
+						  v->type = $2; v->attrs = $1;
+						  $$ = v;
+						}
 	;
 
 funcdef: declaration				{ $$ = $1;