aboutsummaryrefslogtreecommitdiff
path: root/docs/qapi-code-gen.txt
diff options
context:
space:
mode:
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 /docs/qapi-code-gen.txt
parent59a92feedc6927e0e1ff87fdaccfb4dd42ad4c84 (diff)
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/qapi-code-gen.txt')
-rw-r--r--docs/qapi-code-gen.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/qapi-code-gen.txt b/docs/qapi-code-gen.txt
index 32cc68fff1..2becba95b9 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[];