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| author | Eric Blake <eblake@redhat.com> | 2015-11-18 01:52:57 -0700 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2015-12-17 08:21:28 +0100 |
| commit | 7fb1cf1606c78c9d5b538f29176fd5a101726a9d (patch) | |
| tree | 69733bce4ee4a3c1ecd04f5b9a5f65ef1c50e106 /docs | |
| parent | 59a92feedc6927e0e1ff87fdaccfb4dd42ad4c84 (diff) | |
| download | qemu-7fb1cf1606c78c9d5b538f29176fd5a101726a9d.zip qemu-7fb1cf1606c78c9d5b538f29176fd5a101726a9d.tar.gz qemu-7fb1cf1606c78c9d5b538f29176fd5a101726a9d.tar.bz2 | |
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 'docs')
| -rw-r--r-- | docs/qapi-code-gen.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/qapi-code-gen.txt b/docs/qapi-code-gen.txt index 32cc68f..2becba9 100644 --- a/docs/qapi-code-gen.txt +++ b/docs/qapi-code-gen.txt @@ -1053,7 +1053,7 @@ Example: const char *const example_QAPIEvent_lookup[] = { [EXAMPLE_QAPI_EVENT_MY_EVENT] = "MY_EVENT", - [EXAMPLE_QAPI_EVENT_MAX] = NULL, + [EXAMPLE_QAPI_EVENT__MAX] = NULL, }; $ cat qapi-generated/example-qapi-event.h [Uninteresting stuff omitted...] @@ -1070,7 +1070,7 @@ Example: typedef enum example_QAPIEvent { EXAMPLE_QAPI_EVENT_MY_EVENT = 0, - EXAMPLE_QAPI_EVENT_MAX = 1, + EXAMPLE_QAPI_EVENT__MAX = 1, } example_QAPIEvent; extern const char *const example_QAPIEvent_lookup[]; |