1 files changed, 83 insertions, 0 deletions
diff --git a/src/jaegertracing/thrift/lib/py/src/TRecursive.py b/src/jaegertracing/thrift/lib/py/src/TRecursive.py
new file mode 100644
index 000000000..abf202cb1
--- /dev/null
+++ b/src/jaegertracing/thrift/lib/py/src/TRecursive.py
@@ -0,0 +1,83 @@
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+from thrift.Thrift import TType
+
+TYPE_IDX = 1
+SPEC_ARGS_IDX = 3
+SPEC_ARGS_CLASS_REF_IDX = 0
+SPEC_ARGS_THRIFT_SPEC_IDX = 1
+
+
+def fix_spec(all_structs):
+    """Wire up recursive references for all TStruct definitions inside of each thrift_spec."""
+    for struc in all_structs:
+        spec = struc.thrift_spec
+        for thrift_spec in spec:
+            if thrift_spec is None:
+                continue
+            elif thrift_spec[TYPE_IDX] == TType.STRUCT:
+                other = thrift_spec[SPEC_ARGS_IDX][SPEC_ARGS_CLASS_REF_IDX].thrift_spec
+                thrift_spec[SPEC_ARGS_IDX][SPEC_ARGS_THRIFT_SPEC_IDX] = other
+            elif thrift_spec[TYPE_IDX] in (TType.LIST, TType.SET):
+                _fix_list_or_set(thrift_spec[SPEC_ARGS_IDX])
+            elif thrift_spec[TYPE_IDX] == TType.MAP:
+                _fix_map(thrift_spec[SPEC_ARGS_IDX])
+
+
+def _fix_list_or_set(element_type):
+    # For a list or set, the thrift_spec entry looks like,
+    # (1, TType.LIST, 'lister', (TType.STRUCT, [RecList, None], False), None, ),  # 1
+    # so ``element_type`` will be,
+    # (TType.STRUCT, [RecList, None], False)
+    if element_type[0] == TType.STRUCT:
+        element_type[1][1] = element_type[1][0].thrift_spec
+    elif element_type[0] in (TType.LIST, TType.SET):
+        _fix_list_or_set(element_type[1])
+    elif element_type[0] == TType.MAP:
+        _fix_map(element_type[1])
+
+
+def _fix_map(element_type):
+    # For a map of key -> value type, ``element_type`` will be,
+    # (TType.I16, None, TType.STRUCT, [RecMapBasic, None], False), None, )
+    # which is just a normal struct definition.
+    #
+    # For a map of key -> list / set, ``element_type`` will be,
+    # (TType.I16, None, TType.LIST, (TType.STRUCT, [RecMapList, None], False), False)
+    # and we need to process the 3rd element as a list.
+    #
+    # For a map of key -> map, ``element_type`` will be,
+    # (TType.I16, None, TType.MAP, (TType.I16, None, TType.STRUCT,
+    #  [RecMapMap, None], False), False)
+    # and need to process 3rd element as a map.
+
+    # Is the map key a struct?
+    if element_type[0] == TType.STRUCT:
+        element_type[1][1] = element_type[1][0].thrift_spec
+    elif element_type[0] in (TType.LIST, TType.SET):
+        _fix_list_or_set(element_type[1])
+    elif element_type[0] == TType.MAP:
+        _fix_map(element_type[1])
+
+    # Is the map value a struct?
+    if element_type[2] == TType.STRUCT:
+        element_type[3][1] = element_type[3][0].thrift_spec
+    elif element_type[2] in (TType.LIST, TType.SET):
+        _fix_list_or_set(element_type[3])
+    elif element_type[2] == TType.MAP:
+        _fix_map(element_type[3])