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authorEric Blake <eblake@redhat.com>2015-11-18 01:52:57 -0700
committerMarkus Armbruster <armbru@redhat.com>2015-12-17 08:21:28 +0100
commit7fb1cf1606c78c9d5b538f29176fd5a101726a9d (patch)
tree69733bce4ee4a3c1ecd04f5b9a5f65ef1c50e106 /tests/test-string-output-visitor.c
parent59a92feedc6927e0e1ff87fdaccfb4dd42ad4c84 (diff)
downloadfocaccia-qemu-7fb1cf1606c78c9d5b538f29176fd5a101726a9d.tar.gz
focaccia-qemu-7fb1cf1606c78c9d5b538f29176fd5a101726a9d.zip
qapi: Don't let implicit enum MAX member collide
Now that we guarantee the user doesn't have any enum values
beginning with a single underscore, we can use that for our
own purposes.  Renaming ENUM_MAX to ENUM__MAX makes it obvious
that the sentinel is generated.

This patch was mostly generated by applying a temporary patch:

|diff --git a/scripts/qapi.py b/scripts/qapi.py
|index e6d014b..b862ec9 100644
|--- a/scripts/qapi.py
|+++ b/scripts/qapi.py
|@@ -1570,6 +1570,7 @@ const char *const %(c_name)s_lookup[] = {
|     max_index = c_enum_const(name, 'MAX', prefix)
|     ret += mcgen('''
|     [%(max_index)s] = NULL,
|+// %(max_index)s
| };
| ''',
|                max_index=max_index)

then running:

$ cat qapi-{types,event}.c tests/test-qapi-types.c |
    sed -n 's,^// \(.*\)MAX,s|\1MAX|\1_MAX|g,p' > list
$ git grep -l _MAX | xargs sed -i -f list

The only things not generated are the changes in scripts/qapi.py.

Rejecting enum members named 'MAX' is now useless, and will be dropped
in the next patch.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1447836791-369-23-git-send-email-eblake@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
[Rebased to current master, commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'tests/test-string-output-visitor.c')
-rw-r--r--tests/test-string-output-visitor.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tests/test-string-output-visitor.c b/tests/test-string-output-visitor.c
index fd5e67be64..95852523b4 100644
--- a/tests/test-string-output-visitor.c
+++ b/tests/test-string-output-visitor.c
@@ -194,7 +194,7 @@ static void test_visitor_out_enum(TestOutputVisitorData *data,
     char *str;
     EnumOne i;
 
-    for (i = 0; i < ENUM_ONE_MAX; i++) {
+    for (i = 0; i < ENUM_ONE__MAX; i++) {
         char *str_human;
 
         visit_type_EnumOne(data->ov, &i, "unused", &err);
@@ -217,7 +217,7 @@ static void test_visitor_out_enum(TestOutputVisitorData *data,
 static void test_visitor_out_enum_errors(TestOutputVisitorData *data,
                                          const void *unused)
 {
-    EnumOne i, bad_values[] = { ENUM_ONE_MAX, -1 };
+    EnumOne i, bad_values[] = { ENUM_ONE__MAX, -1 };
     Error *err;
 
     for (i = 0; i < ARRAY_SIZE(bad_values) ; i++) {