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qapi: add 'if' to top-level expressions

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Accept 'if' key in top-level elements, accepted as string or list of
string type. The following patches will modify the test visitor to
check the value is correctly saved, and generate #if/#endif code (as a
single #if/endif line or a series for a list).

Example of 'if' key:
{ 'struct': 'TestIfStruct', 'data': { 'foo': 'int' },
  'if': 'defined(TEST_IF_STRUCT)' }

The generated code is for now *unconditional*. Later patches generate
the conditionals.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180703155648.11933-2-marcandre.lureau@redhat.com>
[Commit message and Documentation improved]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Marc-André Lureau 2018-07-03 17:56:35 +02:00 • committed by Markus Armbruster
parent b07cd3e748
commit 967c885108
22 changed files with 146 additions and 6 deletions
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12
tests/test-qmp-cmds.c
View file

@ -12,6 +12,18 @@
static QmpCommandList qmp_commands;
/* #if defined(TEST_IF_STRUCT) && defined(TEST_IF_CMD) */
UserDefThree *qmp_TestIfCmd(TestIfStruct *foo, Error **errp)
{
return NULL;
}
/* #endif */
UserDefThree *qmp_TestCmdReturnDefThree(Error **errp)
{
return NULL;
}
void qmp_user_def_cmd(Error **errp)
{
}