[PATCH 1/2] widl: Clarify declaration type names vs (reference) type names.

Rémi Bernon rbernon at codeweavers.com
Tue Mar 23 15:10:20 CDT 2021


Declaration type names prefer unqualified names whereas reference type
names prefer fully qualified names.

This also skips the enum / struct / union type prefix in WinRT mode,
when writing C++ interfaces.

Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---

This also fixes issues with C++ code, when some interface uses a type
from another namespace. Currently widl isn't using qualified names for
C++ interfaces although it should.

It's not as clean as I'd like it to be, but I think write_type_left is
used in too many places and in too many different contexts to have a
clean fix without undergoing a big refactor.

The "winrt_mode && name_type == NAME_DEFAULT" condition in particular
only matches C++ generated code in WinRT, because WinRT doesn't support
most other cases where NAME_DEFAULT is used, but it's a pretty ugly.

 tools/widl/header.c   | 18 +++++++++++-------
 tools/widl/typetree.c |  8 ++++----
 tools/widl/typetree.h |  2 +-
 3 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/tools/widl/header.c b/tools/widl/header.c
index a5e5d6c6fb3..89e0ddf436e 100644
--- a/tools/widl/header.c
+++ b/tools/widl/header.c
@@ -342,11 +342,12 @@ static void write_pointer_left(FILE *h, type_t *ref)
 void write_type_left(FILE *h, const decl_spec_t *ds, enum name_type name_type, int declonly, int write_callconv)
 {
   type_t *t = ds->type;
-  const char *name;
+  const char *decl_name, *name;
   char *args;
 
   if (!h) return;
 
+  decl_name = type_get_decl_name(t, name_type);
   name = type_get_name(t, name_type);
 
   if (ds->func_specifier & FUNCTION_SPECIFIER_INLINE)
@@ -361,7 +362,7 @@ void write_type_left(FILE *h, const decl_spec_t *ds, enum name_type name_type, i
       case TYPE_ENUM:
         if (!declonly && !t->written) {
           assert(t->defined);
-          if (name) fprintf(h, "enum %s {\n", name);
+          if (decl_name) fprintf(h, "enum %s {\n", decl_name);
           else fprintf(h, "enum {\n");
           t->written = TRUE;
           indentation++;
@@ -369,13 +370,14 @@ void write_type_left(FILE *h, const decl_spec_t *ds, enum name_type name_type, i
           indent(h, -1);
           fprintf(h, "}");
         }
+        else if (winrt_mode && name_type == NAME_DEFAULT && name) fprintf(h, "%s", name);
         else fprintf(h, "enum %s", name ? name : "");
         break;
       case TYPE_STRUCT:
       case TYPE_ENCAPSULATED_UNION:
         if (!declonly && !t->written) {
           assert(t->defined);
-          if (name) fprintf(h, "struct %s {\n", name);
+          if (decl_name) fprintf(h, "struct %s {\n", decl_name);
           else fprintf(h, "struct {\n");
           t->written = TRUE;
           indentation++;
@@ -386,12 +388,13 @@ void write_type_left(FILE *h, const decl_spec_t *ds, enum name_type name_type, i
           indent(h, -1);
           fprintf(h, "}");
         }
+        else if (winrt_mode && name_type == NAME_DEFAULT && name) fprintf(h, "%s", name);
         else fprintf(h, "struct %s", name ? name : "");
         break;
       case TYPE_UNION:
         if (!declonly && !t->written) {
           assert(t->defined);
-          if (t->name) fprintf(h, "union %s {\n", t->name);
+          if (decl_name) fprintf(h, "union %s {\n", decl_name);
           else fprintf(h, "union {\n");
           t->written = TRUE;
           indentation++;
@@ -399,7 +402,8 @@ void write_type_left(FILE *h, const decl_spec_t *ds, enum name_type name_type, i
           indent(h, -1);
           fprintf(h, "}");
         }
-        else fprintf(h, "union %s", t->name ? t->name : "");
+        else if (winrt_mode && name_type == NAME_DEFAULT && name) fprintf(h, "%s", name);
+        else fprintf(h, "union %s", name ? name : "");
         break;
       case TYPE_POINTER:
       {
@@ -485,13 +489,13 @@ void write_type_left(FILE *h, const decl_spec_t *ds, enum name_type name_type, i
       case TYPE_INTERFACE:
       case TYPE_MODULE:
       case TYPE_COCLASS:
-        fprintf(h, "%s", type_get_qualified_name(t, name_type));
+        fprintf(h, "%s", type_get_name(t, name_type));
         break;
       case TYPE_RUNTIMECLASS:
         fprintf(h, "%s", type_get_name(type_runtimeclass_get_default_iface(t, TRUE), name_type));
         break;
       case TYPE_DELEGATE:
-        fprintf(h, "%s", type_get_qualified_name(type_delegate_get_iface(t), name_type));
+        fprintf(h, "%s", type_get_name(type_delegate_get_iface(t), name_type));
         break;
       case TYPE_VOID:
         fprintf(h, "void");
diff --git a/tools/widl/typetree.c b/tools/widl/typetree.c
index a4e1696d2af..c9daaaf8b4b 100644
--- a/tools/widl/typetree.c
+++ b/tools/widl/typetree.c
@@ -81,7 +81,7 @@ static const var_t *find_arg(const var_list_t *args, const char *name)
     return NULL;
 }
 
-const char *type_get_name(const type_t *type, enum name_type name_type)
+const char *type_get_decl_name(const type_t *type, enum name_type name_type)
 {
     switch(name_type) {
     case NAME_DEFAULT:
@@ -94,13 +94,13 @@ const char *type_get_name(const type_t *type, enum name_type name_type)
     return NULL;
 }
 
-const char *type_get_qualified_name(const type_t *type, enum name_type name_type)
+const char *type_get_name(const type_t *type, enum name_type name_type)
 {
     switch(name_type) {
     case NAME_DEFAULT:
-        return type->qualified_name;
+        return type->qualified_name ? type->qualified_name : type->name;
     case NAME_C:
-        return type->c_name;
+        return type->c_name ? type->c_name : type->name;
     }
 
     assert(0);
diff --git a/tools/widl/typetree.h b/tools/widl/typetree.h
index db723817266..8f5e1ebdac5 100644
--- a/tools/widl/typetree.h
+++ b/tools/widl/typetree.h
@@ -77,8 +77,8 @@ type_t *type_parameterized_type_specialize_partial(type_t *type, typeref_list_t
 type_t *type_parameterized_type_specialize_declare(type_t *type, typeref_list_t *params);
 type_t *type_parameterized_type_specialize_define(type_t *type);
 int type_is_equal(const type_t *type1, const type_t *type2);
+const char *type_get_decl_name(const type_t *type, enum name_type name_type);
 const char *type_get_name(const type_t *type, enum name_type name_type);
-const char *type_get_qualified_name(const type_t *type, enum name_type name_type);
 char *gen_name(void);
 extern int is_attr(const attr_list_t *list, enum attr_type t);
 
-- 
2.30.2




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