From 26d175ba930e634307527b041ae814c9a5c59015 Mon Sep 17 00:00:00 2001
From: Mike Bloy <mike@bloy.org>
Date: Sun, 7 Jan 2024 16:31:19 -0600
Subject: [PATCH] ex 7.4

---
 structure.py |  5 +++++
 validate.py  | 16 +++++++---------
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/structure.py b/structure.py
index 0bf6c73..0f81c0d 100644
--- a/structure.py
+++ b/structure.py
@@ -39,3 +39,8 @@ class Structure:
         locs = {}
         exec(code, locs)
         cls.__init__ = locs['__init__']
+
+
+def typed_structure(clsname, **validators):
+    cls = type(clsname, (Structure,), validators)
+    return cls
diff --git a/validate.py b/validate.py
index 77f3dc7..dc9cd60 100644
--- a/validate.py
+++ b/validate.py
@@ -27,16 +27,14 @@ class Typed(Validator):
         return super().check(value)
 
 
-class Integer(Typed):
-    expected_type = int
+_typed_classes = [
+    ('Integer', 'int'),
+    ('Float', 'float'),
+    ('String', 'str'),
+]
 
-
-class Float(Typed):
-    expected_type = float
-
-
-class String(Typed):
-    expected_type = str
+globals().update((name, type(name, (Typed,), {'expected_type': ty}))
+                 for name, ty in _typed_classes)
 
 
 class Positive(Validator):