TEMP charmap cache workaround

hypothesis-python/src/hypothesis/internal/charmap.py

@@ -18,6 +18,7 @@
 from functools import lru_cache
 from typing import Dict, Tuple
 
+from hypothesis.control import _current_build_context
 from hypothesis.configuration import storage_directory
 from hypothesis.errors import InvalidArgument
 from hypothesis.internal.intervalsets import IntervalSet
@@ -186,6 +187,14 @@ def as_general_categories(cats, name="cats"):
     return tuple(c for c in cs if c in out)
 
 
+def _should_cache():
+    # FIXME: this is going to be AWFULLY slow, we need to cache for the
+    #        duration of the example and then evict instead.
+    #        (but let's see how many things this lets us triage)
+    context = _current_build_context.value
+    return context is None or not context.data.provider.avoid_realization
+
+
 category_index_cache = {(): ()}
 
 
@@ -226,7 +235,8 @@ def _query_for_key(key):
             IntervalSet(charmap()[key[-1]])
         )
     assert isinstance(result, IntervalSet)
-    category_index_cache[key] = result.intervals
+    if _should_cache():
+        category_index_cache[key] = result.intervals
     return result.intervals
 
 
@@ -278,5 +288,6 @@ def query(
         if v >= min_codepoint and u <= max_codepoint:
             result.append((max(u, min_codepoint), min(v, max_codepoint)))
     result = (IntervalSet(result) | character_intervals) - exclude_intervals
-    limited_category_index_cache[qkey] = result
+    if _should_cache():
+        limited_category_index_cache[qkey] = result
     return result