generator: Introduce error code (errcode) concept.

[libguestfs.git] / generator / generator_ruby.ml

diff --git a/generator/generator_ruby.ml b/generator/generator_ruby.ml
index d0a7cd2..49ddf1f 100644 (file)
--- a/generator/generator_ruby.ml
+++ b/generator/generator_ruby.ml
@@ -148,6 +148,8 @@ static VALUE ruby_guestfs_close (VALUE gv)
             pr "  int %s = NUM2INT (%sv);\n" n n
         | Int64 n ->
             pr "  long long %s = NUM2LL (%sv);\n" n n
+        | Pointer (t, n) ->
+            pr "  %s %s = (%s) (intptr_t) NUM2LL (%sv);\n" t n t n
       ) args;
       pr "\n";
 
@@ -182,21 +184,20 @@ static VALUE ruby_guestfs_close (VALUE gv)
         pr "\n";
       );
 
-      let error_code =
-        match ret with
-        | RErr | RInt _ | RBool _ -> pr "  int r;\n"; "-1"
-        | RInt64 _ -> pr "  int64_t r;\n"; "-1"
-        | RConstString _ | RConstOptString _ ->
-            pr "  const char *r;\n"; "NULL"
-        | RString _ -> pr "  char *r;\n"; "NULL"
-        | RStringList _ | RHashtable _ -> pr "  char **r;\n"; "NULL"
-        | RStruct (_, typ) -> pr "  struct guestfs_%s *r;\n" typ; "NULL"
-        | RStructList (_, typ) ->
-            pr "  struct guestfs_%s_list *r;\n" typ; "NULL"
-        | RBufferOut _ ->
-            pr "  char *r;\n";
-            pr "  size_t size;\n";
-            "NULL" in
+      (match ret with
+       | RErr | RInt _ | RBool _ -> pr "  int r;\n"
+       | RInt64 _ -> pr "  int64_t r;\n"
+       | RConstString _ | RConstOptString _ ->
+           pr "  const char *r;\n"
+       | RString _ -> pr "  char *r;\n"
+       | RStringList _ | RHashtable _ -> pr "  char **r;\n"
+       | RStruct (_, typ) -> pr "  struct guestfs_%s *r;\n" typ
+       | RStructList (_, typ) ->
+           pr "  struct guestfs_%s_list *r;\n" typ
+       | RBufferOut _ ->
+           pr "  char *r;\n";
+           pr "  size_t size;\n"
+      );
       pr "\n";
 
       if optargs = [] then
@@ -210,13 +211,20 @@ static VALUE ruby_guestfs_close (VALUE gv)
         function
         | Pathname _ | Device _ | Dev_or_Path _ | String _ | Key _
         | FileIn _ | FileOut _ | OptString _ | Bool _ | Int _ | Int64 _
-        | BufferIn _ -> ()
+        | BufferIn _ | Pointer _ -> ()
         | StringList n | DeviceList n ->
             pr "  free (%s);\n" n
       ) args;
 
-      pr "  if (r == %s)\n" error_code;
-      pr "    rb_raise (e_Error, \"%%s\", guestfs_last_error (g));\n";
+      (match errcode_of_ret ret with
+       | `CannotReturnError -> ()
+       | `ErrorIsMinusOne ->
+           pr "  if (r == -1)\n";
+           pr "    rb_raise (e_Error, \"%%s\", guestfs_last_error (g));\n"
+       | `ErrorIsNULL ->
+           pr "  if (r == NULL)\n";
+           pr "    rb_raise (e_Error, \"%%s\", guestfs_last_error (g));\n"
+      );
       pr "\n";
 
       (match ret with