Rework the time cache.

jedi/cache.py

@@ -12,6 +12,7 @@ there are global variables, which are holding the cache information. Some of
 these variables are being cleaned after every API usage.
 """
 import time
+from functools import wraps
 
 from jedi import settings
 from parso.cache import parser_cache
@@ -74,7 +75,7 @@ def clear_time_caches(delete_all=False):
                     del tc[key]
 
 
-def time_cache(time_add_setting):
+def call_signature_time_cache(time_add_setting):
     """
     This decorator works as follows: Call it with a setting and after that
     use the function with a callable that returns the key.
@@ -106,6 +107,28 @@ def time_cache(time_add_setting):
     return _temp
 
 
+def time_cache(seconds):
+    def decorator(func):
+        cache = {}
+
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            key = (args, frozenset(kwargs.items()))
+            try:
+                created, result = cache[key]
+                if time.time() < created + seconds:
+                    return result
+            except KeyError:
+                pass
+            result = func(*args, **kwargs)
+            cache[key] = time.time(), result
+            return result
+
+        wrapper.clear_cache = lambda: cache.clear()
+        return wrapper
+    return decorator
+
+
 def memoize_method(method):
     """A normal memoize function."""
     def wrapper(self, *args, **kwargs):