[Libguestfs] [PATCH libguestfs] generator.ml: do not emit unused print_*_list functions

[Jim Meyering]

I see the following warnings:

  cmds.c:934:13: warning: 'print_int_bool_list' defined but not used
  cmds.c:1093:13: warning: 'print_stat_list' defined but not used
  cmds.c:1124:13: warning: 'print_statvfs_list' defined but not used
  cmds.c:1171:13: warning: 'print_version_list' defined but not used

This patch makes it so we don't emit the unused definitions:

>From ff307d5e14b33fbbf97c411a97905127021b09fc Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Mon, 17 Aug 2009 20:28:34 +0200
Subject: [PATCH libguestfs] generator.ml: do not emit unused print_*_list functions

* src/generator.ml (emit_print_list_function): New function.
Emit a function definition only if it will be used.
---
 src/generator.ml |   36 ++++++++++++++++++++++++------------
 1 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/src/generator.ml b/src/generator.ml
index ac01a98..03dc52b 100755
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -6063,6 +6063,21 @@ and generate_fish_cmds () =
   pr "}\n";
   pr "\n";

+  let emit_print_list_function typ =
+    pr "static void print_%s_list (struct guestfs_%s_list *%ss)\n"
+      typ typ typ;
+    pr "{\n";
+    pr "  int i;\n";
+    pr "\n";
+    pr "  for (i = 0; i < %ss->len; ++i) {\n" typ;
+    pr "    printf (\"[%%d] = {\\n\", i);\n";
+    pr "    print_%s_indent (&%ss->val[i], \"  \");\n" typ typ;
+    pr "    printf (\"}\\n\");\n";
+    pr "  }\n";
+    pr "}\n";
+    pr "\n";
+  in
+
   (* print_* functions *)
   List.iter (
     fun (typ, cols) ->
@@ -6119,20 +6134,17 @@ and generate_fish_cmds () =
       pr "  print_%s_indent (%s, \"\");\n" typ typ;
       pr "}\n";
       pr "\n";
-      pr "static void print_%s_list (struct guestfs_%s_list *%ss)\n"
-        typ typ typ;
-      pr "{\n";
-      pr "  int i;\n";
-      pr "\n";
-      pr "  for (i = 0; i < %ss->len; ++i) {\n" typ;
-      pr "    printf (\"[%%d] = {\\n\", i);\n";
-      pr "    print_%s_indent (&%ss->val[i], \"  \");\n" typ typ;
-      pr "    printf (\"}\\n\");\n";
-      pr "  }\n";
-      pr "}\n";
-      pr "\n";
   ) structs;

+  (* Emit a put_TYPE_list function definition only if that function is used. *)
+  List.iter (
+    function
+    | typ, (RStructListOnly | RStructAndList) ->
+        (* generate the function for typ *)
+        emit_print_list_function typ
+    | typ, _ -> () (* empty *)
+  ) rstructs_used;
+
   (* run_<action> actions *)
   List.iter (
     fun (name, style, _, flags, _, _, _) ->
--
1.6.4.378.g88f2f