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waf/playground/cython/cython_cache.py

38 lines
1.1 KiB
Python

#! /usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2012
"""
A simple cache layer to enable the redistribution of precompiled cython files
"""
from waflib.Task import ASK_LATER
from waflib.extras.cython import cython as cython_base
class cython(cython_base):
def runnable_status(self):
ret = cython_base.runnable_status(self)
if ret != ASK_LATER:
# we can create Node objects since we are in the main thread
bld = self.generator.bld
cache = bld.srcnode.make_node('cython_cache')
if self.env.CYTHON: # write to the cache directory
self.cython_cache_outputs = [cache.make_node(x.path_from(bld.bldnode)) for x in self.outputs]
else: # use the files in the cache directory
self.cython_cache_outputs = [cache.find_node(x.path_from(bld.bldnode)) for x in self.outputs]
return ret
def run(self):
if self.env.CYTHON:
ret = cython_base.run(self)
if not ret:
for (x, y) in zip(self.outputs, self.cython_cache_outputs):
y.parent.mkdir()
y.write(x.read('rb'), 'wb')
return ret
else:
for (x, y) in zip(self.outputs, self.cython_cache_outputs):
x.write(y.read('rb'), 'wb')