1 files changed, 23 insertions, 0 deletions
diff --git a/snips_inference_agl/entity_parser/custom_entity_parser_usage.py b/snips_inference_agl/entity_parser/custom_entity_parser_usage.py
new file mode 100644
index 0000000..72d420a
--- /dev/null
+++ b/snips_inference_agl/entity_parser/custom_entity_parser_usage.py
@@ -0,0 +1,23 @@
+from __future__ import unicode_literals
+
+from enum import Enum, unique
+
+
+@unique
+class CustomEntityParserUsage(Enum):
+    WITH_STEMS = 0
+    """The parser is used with stemming"""
+    WITHOUT_STEMS = 1
+    """The parser is used without stemming"""
+    WITH_AND_WITHOUT_STEMS = 2
+    """The parser is used both with and without stemming"""
+
+    @classmethod
+    def merge_usages(cls, lhs_usage, rhs_usage):
+        if lhs_usage is None:
+            return rhs_usage
+        if rhs_usage is None:
+            return lhs_usage
+        if lhs_usage == rhs_usage:
+            return lhs_usage
+        return cls.WITH_AND_WITHOUT_STEMS