Remove changeQuery in favor of an immutable FullQuery

Also includes the following:
- Introduce typing in RawTextQuery
- Remove an outdated description based on the change
- Refactor setting the autocomplete_location, its more clear to set the
variable in the construct instead of within the method
- Update unit tests to reflect updated functionality

searx/query.py

@@ -1,10 +1,9 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 # pylint: disable=invalid-name, missing-module-docstring, missing-class-docstring
-
 from __future__ import annotations
+
 from abc import abstractmethod, ABC
 import re
-
 from searx import settings
 from searx.sxng_locales import sxng_locales
 from searx.engines import categories, engines, engine_shortcuts
@@ -274,14 +273,17 @@ class RawTextQuery:
         # internal properties
         self.query_parts = []  # use self.getFullQuery()
         self.user_query_parts = []  # use self.getQuery()
-        self.autocomplete_location = None
         self.redirect_to_first_result = False
-        self._parse_query()
+        self.autocomplete_location = self._parse_query()
 
     def _parse_query(self):
         """
         parse self.query, if tags are set, which
         change the search engine or search-language
+
+        Returns a tuple:
+            [0] The query parts as a list
+            [1] The indexor into the above list
         """
 
         # split query, including whitespaces
@@ -307,28 +309,25 @@ class RawTextQuery:
             qlist.append(query_part)
             last_index_location = (qlist, len(qlist) - 1)
 
-        self.autocomplete_location = last_index_location
+        return last_index_location
 
-    def get_autocomplete_full_query(self, text):
+    def get_autocomplete_full_query(self, text: str) -> str:
+        assert self.autocomplete_location is not None
         qlist, position = self.autocomplete_location
         qlist[position] = text
         return self.getFullQuery()
 
-    def changeQuery(self, query):
-        self.user_query_parts = query.strip().split()
-        self.query = self.getFullQuery()
-        self.autocomplete_location = (self.user_query_parts, len(self.user_query_parts) - 1)
-        self.autocomplete_list = []
-        return self
-
-    def getQuery(self):
+    def getQuery(self) -> str:
         return ' '.join(self.user_query_parts)
 
-    def getFullQuery(self):
-        """
-        get full query including whitespaces
-        """
-        return '{0} {1}'.format(' '.join(self.query_parts), self.getQuery()).strip()
+    def getFullQuery(self, new_query: str | None = None):
+        def format_query(query: str) -> str:
+            return '{0} {1}'.format(' '.join(self.query_parts), query).strip()
+
+        if new_query is None:
+            return format_query(self.getQuery())
+
+        return format_query(new_query.strip())
 
     def __str__(self):
         return self.getFullQuery()

searx/search/processors/abstract.py

@@ -144,6 +144,7 @@ class EngineProcessor(ABC):
         - A page-number > 1 when engine does not support paging.
         - A time range when the engine does not support time range.
         """
+
         # if paging is not supported, skip
         if search_query.pageno > 1 and not self.engine.paging:
             return None

searx/webapp.py

@@ -753,14 +753,14 @@ def search():
     # suggestions: use RawTextQuery to get the suggestion URLs with the same bang
     suggestion_urls = list(
         map(
-            lambda suggestion: {'url': raw_text_query.changeQuery(suggestion).getFullQuery(), 'title': suggestion},
+            lambda suggestion: {'url': raw_text_query.getFullQuery(suggestion), 'title': suggestion},
             result_container.suggestions,
         )
     )
 
     correction_urls = list(
         map(
-            lambda correction: {'url': raw_text_query.changeQuery(correction).getFullQuery(), 'title': correction},
+            lambda correction: {'url': raw_text_query.getFullQuery(correction), 'title': correction},
             result_container.corrections,
         )
     )
@@ -851,10 +851,8 @@ def autocompleter():
         backend_name = request.preferences.get_value('autocomplete')
 
         for result in search_autocomplete(backend_name, sug_prefix, sxng_locale):
-            # attention: this loop will change raw_text_query object and this is
-            # the reason why the sug_prefix was stored before (see above)
             if result != sug_prefix:
-                results.append(raw_text_query.changeQuery(result).getFullQuery())
+                results.append(raw_text_query.getNewFullQuery(result))
 
     if len(raw_text_query.autocomplete_list) > 0:
         for autocomplete_text in raw_text_query.autocomplete_list:

tests/unit/test_query.py

@@ -51,12 +51,19 @@ class TestQuery(SearxTestCase):  # pylint:disable=missing-class-docstring
         r = repr(query)
         self.assertTrue(r.startswith(f"<RawTextQuery query='{query_text}' "))
 
-    def test_change_query(self):
+    def test_get_full_query(self):
         query_text = '<8 the query'
         query = RawTextQuery(query_text, [])
-        another_query = query.changeQuery('another text')
-        self.assertEqual(query, another_query)
-        self.assertEqual(query.getFullQuery(), '<8 another text')
+        full_query = query.getFullQuery()
+        new_full_query = query.getFullQuery('another text')
+        self.assertNotEqual(full_query, new_full_query)
+
+    def test_get_full_query_trim(self):
+        query_text = 'foo bar'
+        query = RawTextQuery(query_text, [])
+        new_query = 'bizz bazz'
+        new_full_query = query.getFullQuery(" " + new_query + " ")
+        self.assertEqual(new_query, new_full_query)
 
 
 class TestLanguageParser(SearxTestCase):  # pylint:disable=missing-class-docstring