increase penalty for one-letter words

[nominatim.git] / nominatim / api / search / query.py

diff --git a/nominatim/api/search/query.py b/nominatim/api/search/query.py
index 2ba49bbe514fc56bba00892f02b78a84555d9f34..5d75eb0fbe98c492638bbb174b5db930490f6788 100644 (file)
--- a/nominatim/api/search/query.py
+++ b/nominatim/api/search/query.py
@@ -7,7 +7,7 @@
 """
 Datastructures for a tokenized query.
 """
-from typing import List, Tuple, Optional, NamedTuple, Iterator
+from typing import List, Tuple, Optional, Iterator
 from abc import ABC, abstractmethod
 import dataclasses
 import enum
@@ -107,13 +107,29 @@ class Token(ABC):
             category objects.
         """
 
-
-class TokenRange(NamedTuple):
+@dataclasses.dataclass
+class TokenRange:
     """ Indexes of query nodes over which a token spans.
     """
     start: int
     end: int
 
+    def __lt__(self, other: 'TokenRange') -> bool:
+        return self.end <= other.start
+
+
+    def __le__(self, other: 'TokenRange') -> bool:
+        return NotImplemented
+
+
+    def __gt__(self, other: 'TokenRange') -> bool:
+        return self.start >= other.end
+
+
+    def __ge__(self, other: 'TokenRange') -> bool:
+        return NotImplemented
+
+
     def replace_start(self, new_start: int) -> 'TokenRange':
         """ Return a new token range with the new start.
         """
@@ -169,7 +185,10 @@ class QueryNode:
             and ending at the node 'end'. Returns 'None' if no such
             tokens exist.
         """
-        return next((t.tokens for t in self.starting if t.end == end and t.ttype == ttype), None)
+        for tlist in self.starting:
+            if tlist.end == end and tlist.ttype == ttype:
+                return tlist.tokens
+        return None
 
 
 @dataclasses.dataclass