diff mbox series

[v8,04/22] qapi: factor out checking for keys

Message ID 20181213123724.4866-5-marcandre.lureau@redhat.com
State New
Headers show
Series qapi: add #if pre-processor conditions to generated code (part 2) | expand

Commit Message

Marc-André Lureau Dec. 13, 2018, 12:37 p.m. UTC 
Introduce a new helper function to check if the given keys are known,
and if mandatory keys are present. The function will be reused in
other places in the following code changes.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
---
 scripts/qapi/common.py | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py
index 1fa2f79990..18f5872808 100644
--- a/scripts/qapi/common.py
+++ b/scripts/qapi/common.py
@@ -873,6 +873,17 @@  def check_struct(expr, info):
                allow_metas=['struct'])
 
 
+def check_known_keys(info, source, keys, required, optional):
+    for key in keys:
+        if key not in required and key not in optional:
+            raise QAPISemError(info, "Unknown key '%s' in %s" % (key, source))
+
+    for key in required:
+        if key not in keys:
+            raise QAPISemError(info, "Key '%s' is missing from %s"
+                               % (key, source))
+
+
 def check_keys(expr_elem, meta, required, optional=[]):
     expr = expr_elem['expr']
     info = expr_elem['info']
@@ -880,10 +891,9 @@  def check_keys(expr_elem, meta, required, optional=[]):
     if not isinstance(name, str):
         raise QAPISemError(info, "'%s' key must have a string value" % meta)
     required = required + [meta]
+    source = "%s '%s'" % (meta, name)
+    check_known_keys(info, source, expr.keys(), required, optional)
     for (key, value) in expr.items():
-        if key not in required and key not in optional:
-            raise QAPISemError(info, "Unknown key '%s' in %s '%s'"
-                               % (key, meta, name))
         if key in ['gen', 'success-response'] and value is not False:
             raise QAPISemError(info,
                                "'%s' of %s '%s' should only use false value"
@@ -895,10 +905,6 @@  def check_keys(expr_elem, meta, required, optional=[]):
                                % (key, meta, name))
         if key == 'if':
             check_if(expr, info)
-    for key in required:
-        if key not in expr:
-            raise QAPISemError(info, "Key '%s' is missing from %s '%s'"
-                               % (key, meta, name))
 
 
 def check_exprs(exprs):