From 39857a9745cec89da08a2d1101495a32b3535e38 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Thu, 6 Nov 2014 15:19:49 +0100
Subject: Provide default implementations for server functions

By providing default implementations, servers can provide partial
implementations of protocols without having to stub out functions.

* server.c (WriteDefaultRoutine): New function.
(WriteRoutine): Call WriteDefaultRoutine.
---
 server.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'server.c')

diff --git a/server.c b/server.c
index ae5977f..bcdeb0b 100644
--- a/server.c
+++ b/server.c
@@ -1278,6 +1278,28 @@ WriteFieldDecl(FILE *file, const argument_t *arg)
     WriteFieldDeclPrim(file, arg, FetchServerType);
 }
 
+static void
+WriteDefaultRoutine(FILE *file, const routine_t *rt)
+{
+    fprintf(file, "\n/* Default implementation of %s */\n",
+	    rt->rtServerName);
+
+    fprintf(file, "#ifdef\tMIG_EOPNOTSUPP\n");
+
+    fprintf(file, "%s __attribute__ ((weak))\n%s\n",
+	    ReturnTypeStr(rt), rt->rtServerName);
+    fprintf(file, "(\n");
+    WriteList(file, rt->rtArgs, WriteServerVarDecl,
+	      akbServerArg, ",\n", "\n");
+
+    if (rt->rtReturn == argNULL)
+	fprintf(file, ") {}\n");
+    else
+	fprintf(file, ") { return MIG_EOPNOTSUPP; }\n");
+
+    fprintf(file, "#endif\t/* MIG_EOPNOTSUPP */\n");
+}
+
 static void
 WriteRoutine(FILE *file, const routine_t *rt)
 {
@@ -1346,6 +1368,8 @@ WriteRoutine(FILE *file, const routine_t *rt)
     }
 
     fprintf(file, "}\n");
+
+    WriteDefaultRoutine(file, rt);
 }
 
 void
-- 
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