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Removed use of defaultdict to fix compatibility with Python 2.4.

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This commit is contained in:
Mike Naberezny 2010-03-08 22:32:55 -08:00
parent be70a5946c
commit 8415155249
2 changed files with 11 additions and 9 deletions
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1
CHANGES.txt
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@ -1,5 +1,6 @@
0.9-dev *Next Release*
- Removed use of defaultdict to fix compatibility with Python 2.4.
0.8 (2010-03-08)

19
src/py65/memory.py
View File

@ -1,4 +1,3 @@
from collections import defaultdict
class ObservableMemory:
def __init__(self, subject=None):
@ -6,11 +5,11 @@ class ObservableMemory:
subject = 0x10000 * [0x00]
self._subject = subject
self._read_subscribers = defaultdict(list)
self._write_subscribers = defaultdict(list)
self._read_subscribers = {}
self._write_subscribers = {}
def __setitem__(self, address, value):
callbacks = self._write_subscribers[address]
callbacks = self._write_subscribers.setdefault(address, [])
for callback in callbacks:
result = callback(address, value)
@ -20,7 +19,7 @@ class ObservableMemory:
self._subject[address] = value
def __getitem__(self, address):
callbacks = self._read_subscribers[address]
callbacks = self._read_subscribers.setdefault(address, [])
final_result = None
for callback in callbacks:
@ -38,13 +37,15 @@ class ObservableMemory:
def subscribe_to_write(self, address_range, callback):
for address in address_range:
if not callback in self._write_subscribers[address]:
self._write_subscribers[address].append(callback)
callbacks = self._write_subscribers.setdefault(address, [])
if callback not in callbacks:
callbacks.append(callback)
def subscribe_to_read(self, address_range, callback):
for address in address_range:
if not callback in self._read_subscribers[address]:
self._read_subscribers[address].append(callback)
callbacks = self._read_subscribers.setdefault(address, [])
if callback not in callbacks:
callbacks.append(callback)
def write(self, start_address, bytes):
self._subject[start_address:start_address+len(bytes)] = bytes