N3_sub/modules/waf/playground/shrinking_sets/wscript

#! /usr/bin/env python

def options(ctx):
	pass

def configure(ctx):
	ctx.load('mem_reducer')
	pass

def build(bld):
	bld(features='make_a_lot')

"""
Testcase for the mem_reducer.py tool
"""

import itertools, random
from waflib import Utils, Task, TaskGen, Runner

random.seed(0)
class a(Task.Task):
	def run(self):
		self.outputs[0].write('a')
class b(Task.Task):
	after = ['a']
	def run(self):
		self.outputs[0].write('b')
class c(Task.Task):
	after = ['b', 'c']
	def run(self):
		self.outputs[0].write('c')
class d(Task.Task):
	after = ['c', 'a']
	def run(self):
		self.outputs[0].write('d')

@TaskGen.feature('make_a_lot')
def make_a_lot_of_tasks(self):
	src = self.path.find_resource('wscript')
	for x in range(9000):
		anode = self.path.find_or_declare('a%d' % x)
		self.create_task('a', [src], [anode])

		bnode = self.path.find_or_declare('b%d' % x)
		self.create_task('b', [src], [bnode])

		cnode = self.path.find_or_declare('c%d' % x)
		self.create_task('c', [src], [cnode])

		dnode = self.path.find_or_declare('d%d' % x)
		self.create_task('d', [src], [dnode])

	# shuffle the tasks, but in the same order
	#random.seed(0)
	#random.shuffle(self.tasks)