Speed up import of options.types

The color table attributes are never used in a type checked
environment, only via setattr/gettattr so dont create individual
get/setters for them. Reduaces the import time for this module from 2ms
to 0.7ms

Since attribute access is implemented via __getattr__ there should be no
performance implications for normal attribute access, as __getattr__ is
only called if normal attribute access fails. setattr becomes slightly
slower but that is done very rarely.

gen-config.py

@@ -105,15 +105,6 @@ def generate_class(defn: Definition, loc: str) -> Tuple[str, str]:
             tc_imports.add((func.__module__, func.__name__))
             cnum = int(option.name[5:])
             color_table[cnum] = '0x{:06x}'.format(func(option.defval_as_string).__int__())
-            a('')
-            a('    @property')
-            a(f'    def {option.name}(self) -> {typ}:')
-            a(f'        x = self.color_table[{cnum}]')
-            a(f'        return {typ}((x >> 16) & 255, (x >> 8) & 255, x & 255)')
-            a('')
-            a(f'    @{option.name}.setter')
-            a(f'    def {option.name}(self, val: {typ}) -> None:')
-            a(f'        self.color_table[{cnum}] = val.__int__()')
             continue
         else:
             func, typ = option_type_data(option)
@@ -234,6 +225,28 @@ def generate_class(defn: Definition, loc: str) -> Tuple[str, str]:
     a('            pass')
     a('        raise KeyError(f"No option named: {k}")')
 
+    if defn.has_color_table:
+        a('')
+        a('    def __getattr__(self, key: str) -> typing.Any:')
+        a('        if key.startswith("color"):')
+        a('            q = key[5:]')
+        a('            if q.isdigit():')
+        a('                k = int(q)')
+        a('                if 0 <= k <= 255:')
+        a('                    x = self.color_table[k]')
+        a('                    return Color((x >> 16) & 255, (x >> 8) & 255, x & 255)')
+        a('        raise AttributeError(key)')
+        a('')
+        a('    def __setattr__(self, key: str, val: typing.Any) -> typing.Any:')
+        a('        if key.startswith("color"):')
+        a('            q = key[5:]')
+        a('            if q.isdigit():')
+        a('                k = int(q)')
+        a('                if 0 <= k <= 255:')
+        a('                    self.color_table[k] = int(val)')
+        a('                    return')
+        a('        object.__setattr__(self, key, val)')
+
     a('')
     a('')
     a('defaults = Options()')