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qapi: Don't let implicit enum MAX member collide

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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>
This commit is contained in:
Eric Blake 2015-11-18 01:52:57 -07:00 • committed by Markus Armbruster
parent 59a92feedc
commit 7fb1cf1606
34 changed files with 83 additions and 83 deletions
Download patch file Download diff file Expand all files Collapse all files

10
tpm.c
View file

@ -32,7 +32,7 @@ static TPMDriverOps const *be_drivers[TPM_MAX_DRIVERS] = {
};
static enum TpmModel tpm_models[TPM_MAX_MODELS] = {
TPM_MODEL_MAX,
TPM_MODEL__MAX,
};
int tpm_register_model(enum TpmModel model)
@ -40,7 +40,7 @@ int tpm_register_model(enum TpmModel model)
int i;
for (i = 0; i < TPM_MAX_MODELS; i++) {
if (tpm_models[i] == TPM_MODEL_MAX) {
if (tpm_models[i] == TPM_MODEL__MAX) {
tpm_models[i] = model;
return 0;
}
@ -272,7 +272,7 @@ static TPMInfo *qmp_query_tpm_inst(TPMBackend *drv)
tpo->has_cancel_path = true;
}
break;
case TPM_TYPE_MAX:
case TPM_TYPE__MAX:
break;
}
@ -311,7 +311,7 @@ TpmTypeList *qmp_query_tpm_types(Error **errp)
unsigned int i = 0;
TpmTypeList *head = NULL, *prev = NULL, *cur_item;
for (i = 0; i < TPM_TYPE_MAX; i++) {
for (i = 0; i < TPM_TYPE__MAX; i++) {
if (!tpm_driver_find_by_type(i)) {
continue;
}
@ -335,7 +335,7 @@ TpmModelList *qmp_query_tpm_models(Error **errp)
unsigned int i = 0;
TpmModelList *head = NULL, *prev = NULL, *cur_item;
for (i = 0; i < TPM_MODEL_MAX; i++) {
for (i = 0; i < TPM_MODEL__MAX; i++) {
if (!tpm_model_is_registered(i)) {
continue;
}