hmp: introduce cmd_available

Combine the RUN_STATE_PRECONFIG and cmd_can_preconfig checks
into a single function, to avoid repeating the same expression
(or its negation after applying DeMorgan's rule) over and
over again.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

monitor/hmp.c

@@ -213,6 +213,11 @@ static bool cmd_can_preconfig(const HMPCommand *cmd)
     return strchr(cmd->flags, 'p');
 }
 
+static bool cmd_available(const HMPCommand *cmd)
+{
+    return !runstate_check(RUN_STATE_PRECONFIG) || cmd_can_preconfig(cmd);
+}
+
 static void help_cmd_dump_one(Monitor *mon,
                               const HMPCommand *cmd,
                               char **prefix_args,
@@ -220,7 +225,7 @@ static void help_cmd_dump_one(Monitor *mon,
 {
     int i;
 
-    if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
+    if (!cmd_available(cmd)) {
         return;
     }
 
@@ -248,8 +253,7 @@ static void help_cmd_dump(Monitor *mon, const HMPCommand *cmds,
     /* Find one entry to dump */
     for (cmd = cmds; cmd->name != NULL; cmd++) {
         if (hmp_compare_cmd(args[arg_index], cmd->name) &&
-            ((!runstate_check(RUN_STATE_PRECONFIG) ||
-                cmd_can_preconfig(cmd)))) {
+            cmd_available(cmd)) {
             if (cmd->sub_table) {
                 /* continue with next arg */
                 help_cmd_dump(mon, cmd->sub_table,
@@ -653,7 +657,7 @@ static const HMPCommand *monitor_parse_command(MonitorHMP *hmp_mon,
                        (int)(p - cmdp_start), cmdp_start);
         return NULL;
     }
-    if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
+    if (!cmd_available(cmd)) {
         monitor_printf(mon, "Command '%.*s' not available with -preconfig "
                             "until after exit_preconfig.\n",
                        (int)(p - cmdp_start), cmdp_start);
@@ -1225,8 +1229,7 @@ static void monitor_find_completion_by_table(MonitorHMP *mon,
         }
         readline_set_completion_index(mon->rs, strlen(cmdname));
         for (cmd = cmd_table; cmd->name != NULL; cmd++) {
-            if (!runstate_check(RUN_STATE_PRECONFIG) ||
-                 cmd_can_preconfig(cmd)) {
+            if (cmd_available(cmd)) {
                 cmd_completion(mon, cmdname, cmd->name);
             }
         }
@@ -1234,8 +1237,7 @@ static void monitor_find_completion_by_table(MonitorHMP *mon,
         /* find the command */
         for (cmd = cmd_table; cmd->name != NULL; cmd++) {
             if (hmp_compare_cmd(args[0], cmd->name) &&
-                (!runstate_check(RUN_STATE_PRECONFIG) ||
-                 cmd_can_preconfig(cmd))) {
+                cmd_available(cmd)) {
                 break;
             }
         }