[PULL,4/4] qapi-types: add C99 index names to arrays
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Message ID 1424710526-21474-5-git-send-email-lcapitulino@redhat.com
State New
Headers show

Commit Message

Luiz Capitulino Feb. 23, 2015, 4:55 p.m. UTC
From: "Michael S. Tsirkin" <mst@redhat.com>

It's not easy to figure out how monitor translates
strings: most QEMU code deals with translated indexes,
these are translated using _lookup arrays,
so you need to find the array name, and find the
appropriate offset.

This patch adds C99 indexes to lookup arrays, which makes it possible to
find the correct key using simple grep, and see that the matching is
correct at a glance.

Example:

Before:

const char *MigrationCapability_lookup[] = {
    "xbzrle",
    "rdma-pin-all",
    "auto-converge",
    "zero-blocks",
    NULL,
};

After:

const char *MigrationCapability_lookup[] = {
    [MIGRATION_CAPABILITY_XBZRLE] = "xbzrle",
    [MIGRATION_CAPABILITY_RDMA_PIN_ALL] = "rdma-pin-all",
    [MIGRATION_CAPABILITY_AUTO_CONVERGE] = "auto-converge",
    [MIGRATION_CAPABILITY_ZERO_BLOCKS] = "zero-blocks",
    [MIGRATION_CAPABILITY_MAX] = NULL,
};

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---
 scripts/qapi-types.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

Patch
diff mbox

diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index 1eb272d..db87218 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -123,16 +123,19 @@  const char *%(name)s_lookup[] = {
                          name=name)
     i = 0
     for value in values:
+        index = generate_enum_full_value(name, value)
         ret += mcgen('''
-    "%(value)s",
+    [%(index)s] = "%(value)s",
 ''',
-                     value=value)
+                     index = index, value = value)
 
+    max_index = generate_enum_full_value(name, 'MAX')
     ret += mcgen('''
-    NULL,
+    [%(max_index)s] = NULL,
 };
 
-''')
+''',
+        max_index=max_index)
     return ret
 
 def generate_enum(name, values):