qapi: Generate FOO_str() macro for QAPI enum FOO

The next commit will put it to use.  May look pointless now, but we're
going to change the FOO_lookup's type, and then it'll help.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1503564371-26090-13-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

block.c

@@ -42,7 +42,6 @@
 #include "qapi-event.h"
 #include "qemu/cutils.h"
 #include "qemu/id.h"
-#include "qapi/util.h"
 
 #ifdef CONFIG_BSD
 #include <sys/ioctl.h>

block/blkdebug.c

@@ -32,7 +32,6 @@
 #include "qapi/qmp/qbool.h"
 #include "qapi/qmp/qdict.h"
 #include "qapi/qmp/qstring.h"
-#include "qapi/util.h"
 #include "sysemu/qtest.h"
 
 typedef struct BDRVBlkdebugState {

block/file-posix.c

@@ -31,7 +31,6 @@
 #include "block/thread-pool.h"
 #include "qemu/iov.h"
 #include "block/raw-aio.h"
-#include "qapi/util.h"
 #include "qapi/qmp/qstring.h"
 
 #if defined(__APPLE__) && (__MACH__)

block/file-win32.c

@@ -31,7 +31,6 @@
 #include "block/thread-pool.h"
 #include "qemu/iov.h"
 #include "qapi/qmp/qstring.h"
-#include "qapi/util.h"
 #include <windows.h>
 #include <winioctl.h>
 

block/gluster.c

@@ -12,7 +12,6 @@
 #include "block/block_int.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qerror.h"
-#include "qapi/util.h"
 #include "qemu/uri.h"
 #include "qemu/error-report.h"
 #include "qemu/cutils.h"

block/parallels.c

@@ -35,7 +35,6 @@
 #include "qemu/module.h"
 #include "qemu/bswap.h"
 #include "qemu/bitmap.h"
-#include "qapi/util.h"
 
 /**************************************************************/
 

block/qcow2.c

@@ -30,7 +30,6 @@
 #include "qemu/error-report.h"
 #include "qapi/qmp/qerror.h"
 #include "qapi/qmp/qbool.h"
-#include "qapi/util.h"
 #include "qapi/qmp/types.h"
 #include "qapi-event.h"
 #include "trace.h"

block/quorum.c

@@ -22,7 +22,6 @@
 #include "qapi/qmp/qjson.h"
 #include "qapi/qmp/qlist.h"
 #include "qapi/qmp/qstring.h"
-#include "qapi/util.h"
 #include "qapi-event.h"
 #include "crypto/hash.h"
 

blockdev.c

@@ -44,7 +44,6 @@
 #include "qapi-visit.h"
 #include "qapi/qmp/qerror.h"
 #include "qapi/qobject-output-visitor.h"
-#include "qapi/util.h"
 #include "sysemu/sysemu.h"
 #include "block/block_int.h"
 #include "qmp-commands.h"

crypto/block-luks.c

@@ -20,7 +20,6 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
-#include "qapi/util.h"
 #include "qemu/bswap.h"
 
 #include "crypto/block-luks.h"

docs/devel/qapi-code-gen.txt

@@ -1275,6 +1275,9 @@ Example:
         EXAMPLE_QAPI_EVENT__MAX = 1,
     } example_QAPIEvent;
 
+    #define example_QAPIEvent_str(val) \
+        qapi_enum_lookup(example_QAPIEvent_lookup, (val))
+
     extern const char *const example_QAPIEvent_lookup[];
 
     #endif

hmp.c

@@ -31,7 +31,6 @@
 #include "qapi/qmp/qerror.h"
 #include "qapi/string-input-visitor.h"
 #include "qapi/string-output-visitor.h"
-#include "qapi/util.h"
 #include "qapi-visit.h"
 #include "qom/object_interfaces.h"
 #include "ui/console.h"

include/qapi/util.h

@@ -11,6 +11,7 @@
 #ifndef QAPI_UTIL_H
 #define QAPI_UTIL_H
 
+const char *qapi_enum_lookup(const char *const lookup[], int val);
 int qapi_enum_parse(const char * const lookup[], const char *buf,
                     int def, Error **errp);
 

migration/global_state.c

@@ -14,7 +14,6 @@
 #include "qemu/cutils.h"
 #include "qemu/error-report.h"
 #include "qapi/error.h"
-#include "qapi/util.h"
 #include "migration.h"
 #include "migration/global_state.h"
 #include "migration/vmstate.h"

migration/migration.c

@@ -31,7 +31,6 @@
 #include "migration/vmstate.h"
 #include "block/block.h"
 #include "qapi/qmp/qerror.h"
-#include "qapi/util.h"
 #include "qemu/rcu.h"
 #include "block.h"
 #include "postcopy-ram.h"

qapi/qapi-util.c

@@ -13,7 +13,13 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "qemu-common.h"
-#include "qapi/util.h"
+
+const char *qapi_enum_lookup(const char *const lookup[], int val)
+{
+    assert(val >= 0);
+
+    return lookup[val];
+}
 
 int qapi_enum_parse(const char * const lookup[], const char *buf,
                     int def, Error **errp)

qapi/qapi-visit-core.c

@@ -14,7 +14,6 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
-#include "qapi/util.h"
 #include "qemu-common.h"
 #include "qapi/qmp/qobject.h"
 #include "qapi/qmp/qerror.h"

qemu-img.c

@@ -26,7 +26,6 @@
 
 #include "qemu-version.h"
 #include "qapi/error.h"
-#include "qapi/util.h"
 #include "qapi-visit.h"
 #include "qapi/qobject-output-visitor.h"
 #include "qapi/qmp/qerror.h"

qemu-nbd.c

@@ -34,7 +34,6 @@
 #include "qemu/log.h"
 #include "qemu/systemd.h"
 #include "block/snapshot.h"
-#include "qapi/util.h"
 #include "qapi/qmp/qstring.h"
 #include "qom/object_interfaces.h"
 #include "io/channel-socket.h"

scripts/qapi-event.py

@@ -217,6 +217,7 @@ def visit_event(self, name, info, arg_type, boxed):
 
 fdecl.write(mcgen('''
 #include "qapi/error.h"
+#include "qapi/util.h"
 #include "qapi/qmp/qdict.h"
 #include "%(prefix)sqapi-types.h"
 

scripts/qapi-types.py

@@ -292,6 +292,10 @@ def visit_alternate_type(self, name, info, variants):
 ''',
                  prefix=prefix))
 
+fdecl.write(mcgen('''
+#include "qapi/util.h"
+'''))
+
 schema = QAPISchema(input_file)
 gen = QAPISchemaGenTypeVisitor()
 schema.visit(gen)

scripts/qapi.py

@@ -1894,6 +1894,9 @@ def gen_enum(name, values, prefix=None):
 
     ret += mcgen('''
 
+#define %(c_name)s_str(val) \\
+    qapi_enum_lookup(%(c_name)s_lookup, (val))
+
 extern const char *const %(c_name)s_lookup[];
 ''',
                  c_name=c_name(name))

tests/test-qapi-util.c

@@ -12,7 +12,6 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
-#include "qapi/util.h"
 #include "test-qapi-types.h"
 
 static void test_qapi_enum_parse(void)

tpm.c

@@ -14,7 +14,6 @@
 #include "qemu/osdep.h"
 
 #include "qapi/qmp/qerror.h"
-#include "qapi/util.h"
 #include "sysemu/tpm_backend.h"
 #include "sysemu/tpm.h"
 #include "qemu/config-file.h"

util/keyval.c

@@ -82,7 +82,6 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qstring.h"
-#include "qapi/util.h"
 #include "qemu/cutils.h"
 #include "qemu/option.h"