ENH: check lack of hole in check_api_dict

1 files changed, 14 insertions, 0 deletions

diff --git a/numpy/core/code_generators/genapi2.py b/numpy/core/code_generators/genapi2.py
index 1376f5517..9937ec5a5 100644
--- a/numpy/core/code_generators/genapi2.py
+++ b/numpy/core/code_generators/genapi2.py
@@ -1,3 +1,8 @@
+import sys
+
+if sys.version_info[:2] < (2, 6):
+    from sets import Set as set
+
 from genapi import API_FILES, find_functions
 
 def order_dict(d):
@@ -35,6 +40,15 @@ Same index has been used twice in api definition: %s
                                           if len(names) != 1]
         raise ValueError(msg)
 
+    # No 'hole' in the indexes may be allowed, and it must starts at 0
+    indexes = set(d.values())
+    expected = set(range(len(indexes)))
+    if not indexes == expected:
+        diff = expected.symmetric_difference(indexes)
+        msg = "There are some holes in the API indexing: " \
+              "(symmetric diff is %s)" % diff
+        raise ValueError(msg)
+
 def get_api_functions(tagname, api_dict):
     """Parse source files to get functions tagged by the given tag."""
     functions = []