From 878c370e5b608f3034e62ceb5bd80d1f623ac658e9222d32c8d4b41ec23e5797 Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Wed, 20 Nov 2024 15:37:42 +0300
Subject: [PATCH] Do not construct constant objects every time function is
 called

---
 pyac/pyac.py             | 12 ++++++------
 spec/encoding/tai64.texi |  9 +++++----
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/pyac/pyac.py b/pyac/pyac.py
index d713d84..257a898 100755
--- a/pyac/pyac.py
+++ b/pyac/pyac.py
@@ -229,6 +229,8 @@ def _int(v):
 
 
 _EOC = object()
+_floats = {TagFloat16: 2, TagFloat32: 4, TagFloat64: 8, TagFloat128: 16, TagFloat256: 32}
+_tais = {TagTAI64: 8, TagTAI64N: 12, TagTAI64NA: 16}
 
 
 def loads(v, sets=False):
@@ -246,15 +248,13 @@ def loads(v, sets=False):
         if len(v) < 1+16:
             raise NotEnoughData(1+16)
         return UUID(bytes=v[1:1+16]), v[1+16:]
-    floats = {TagFloat16: 2, TagFloat32: 4, TagFloat64: 8, TagFloat128: 16, TagFloat256: 32}
-    if v[0] in floats:
-        l = floats[v[0]]
+    if v[0] in _floats:
+        l = _floats[v[0]]
         if len(v) < 1+l:
             raise NotEnoughData(1+l)
         return Raw(v[0], v[1:1+l]), v[1+l:]
-    tais = {TagTAI64: 8, TagTAI64N: 12, TagTAI64NA: 16}
-    if v[0] in tais:
-        l = tais[v[0]]
+    if v[0] in _tais:
+        l = _tais[v[0]]
         if len(v) < 1+l:
             raise NotEnoughData(1+l)
         secs = int.from_bytes(v[1:1+8], "big")
diff --git a/spec/encoding/tai64.texi b/spec/encoding/tai64.texi
index 7566c98..5619c81 100644
--- a/spec/encoding/tai64.texi
+++ b/spec/encoding/tai64.texi
@@ -23,12 +23,13 @@ Example representations:
 
 @multitable @columnfractions .5 .5
 
-@item 1970-01-01 TAI @tab @code{18 4000000000000000}
-@item 1970-01-01 UTC @tab @code{18 400000000000000A}
+@item 1970-01-01 00:00:00 TAI @tab @code{18 4000000000000000}
+@item 1970-01-01 00:00:00 UTC @tab @code{18 400000000000000A}
 @item 1969-12-31 23:59:59 TAI @tab @code{18 3FFFFFFFFFFFFFFF}
+@item 1992-06-02 08:07:09 TAI @tab @code{18 400000002A2B2C2D}
+@item 1992-06-02 08:06:43 UTC @tab @code{18 400000002A2B2C2D}
 @item 1997-10-03 18:15:19 TAI @tab @code{18 4000000034353637}
 @item 1997-10-03 18:14:48 UTC @tab @code{18 4000000034353637}
-@item 2024-10-01 12:39:07 UTC @tab @code{18 4000000066FC17C0}
-@item 2024-10-01 12:39:07 UTC 123456 μs @tab @code{19 4000000066FC17C0075BCA00}
+@item 2024-11-20 12:19:08 921772500ns UTC @tab @code{19 40000000673DD3E136F121D4}
 
 @end multitable
-- 
2.50.0