ref: a4c1e861f03a220d9448dac07e2b768b516f742e
dir: /waflib/TaskGen.py/
#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! http://waf.googlecode.com/git/docs/wafbook/single.html#_obtaining_the_waf_file
import copy,re,os
from waflib import Task,Utils,Logs,Errors,ConfigSet,Node
feats=Utils.defaultdict(set)
class task_gen(object):
mappings={}
prec=Utils.defaultdict(list)
def __init__(self,*k,**kw):
self.source=''
self.target=''
self.meths=[]
self.prec=Utils.defaultdict(list)
self.mappings={}
self.features=[]
self.tasks=[]
if not'bld'in kw:
self.env=ConfigSet.ConfigSet()
self.idx=0
self.path=None
else:
self.bld=kw['bld']
self.env=self.bld.env.derive()
self.path=self.bld.path
try:
self.idx=self.bld.idx[id(self.path)]=self.bld.idx.get(id(self.path),0)+1
except AttributeError:
self.bld.idx={}
self.idx=self.bld.idx[id(self.path)]=1
for key,val in kw.items():
setattr(self,key,val)
def __str__(self):
return"<task_gen %r declared in %s>"%(self.name,self.path.abspath())
def __repr__(self):
lst=[]
for x in self.__dict__.keys():
if x not in['env','bld','compiled_tasks','tasks']:
lst.append("%s=%s"%(x,repr(getattr(self,x))))
return"bld(%s) in %s"%(", ".join(lst),self.path.abspath())
def get_name(self):
try:
return self._name
except AttributeError:
if isinstance(self.target,list):
lst=[str(x)for x in self.target]
name=self._name=','.join(lst)
else:
name=self._name=str(self.target)
return name
def set_name(self,name):
self._name=name
name=property(get_name,set_name)
def to_list(self,val):
if isinstance(val,str):return val.split()
else:return val
def post(self):
if getattr(self,'posted',None):
return False
self.posted=True
keys=set(self.meths)
self.features=Utils.to_list(self.features)
for x in self.features+['*']:
st=feats[x]
if not st:
if not x in Task.classes:
Logs.warn('feature %r does not exist - bind at least one method to it'%x)
keys.update(list(st))
prec={}
prec_tbl=self.prec or task_gen.prec
for x in prec_tbl:
if x in keys:
prec[x]=prec_tbl[x]
tmp=[]
for a in keys:
for x in prec.values():
if a in x:break
else:
tmp.append(a)
tmp.sort()
out=[]
while tmp:
e=tmp.pop()
if e in keys:out.append(e)
try:
nlst=prec[e]
except KeyError:
pass
else:
del prec[e]
for x in nlst:
for y in prec:
if x in prec[y]:
break
else:
tmp.append(x)
if prec:
raise Errors.WafError('Cycle detected in the method execution %r'%prec)
out.reverse()
self.meths=out
Logs.debug('task_gen: posting %s %d'%(self,id(self)))
for x in out:
try:
v=getattr(self,x)
except AttributeError:
raise Errors.WafError('%r is not a valid task generator method'%x)
Logs.debug('task_gen: -> %s (%d)'%(x,id(self)))
v()
Logs.debug('task_gen: posted %s'%self.name)
return True
def get_hook(self,node):
name=node.name
for k in self.mappings:
if name.endswith(k):
return self.mappings[k]
for k in task_gen.mappings:
if name.endswith(k):
return task_gen.mappings[k]
raise Errors.WafError("File %r has no mapping in %r (did you forget to load a waf tool?)"%(node,task_gen.mappings.keys()))
def create_task(self,name,src=None,tgt=None):
task=Task.classes[name](env=self.env.derive(),generator=self)
if src:
task.set_inputs(src)
if tgt:
task.set_outputs(tgt)
self.tasks.append(task)
return task
def clone(self,env):
newobj=self.bld()
for x in self.__dict__:
if x in['env','bld']:
continue
elif x in['path','features']:
setattr(newobj,x,getattr(self,x))
else:
setattr(newobj,x,copy.copy(getattr(self,x)))
newobj.posted=False
if isinstance(env,str):
newobj.env=self.bld.all_envs[env].derive()
else:
newobj.env=env.derive()
return newobj
def declare_chain(name='',rule=None,reentrant=None,color='BLUE',ext_in=[],ext_out=[],before=[],after=[],decider=None,scan=None,install_path=None,shell=False):
ext_in=Utils.to_list(ext_in)
ext_out=Utils.to_list(ext_out)
if not name:
name=rule
cls=Task.task_factory(name,rule,color=color,ext_in=ext_in,ext_out=ext_out,before=before,after=after,scan=scan,shell=shell)
def x_file(self,node):
ext=decider and decider(self,node)or cls.ext_out
if ext_in:
_ext_in=ext_in[0]
tsk=self.create_task(name,node)
cnt=0
keys=list(self.mappings.keys())+list(self.__class__.mappings.keys())
for x in ext:
k=node.change_ext(x,ext_in=_ext_in)
tsk.outputs.append(k)
if reentrant!=None:
if cnt<int(reentrant):
self.source.append(k)
else:
for y in keys:
if k.name.endswith(y):
self.source.append(k)
break
cnt+=1
if install_path:
self.bld.install_files(install_path,tsk.outputs)
return tsk
for x in cls.ext_in:
task_gen.mappings[x]=x_file
return x_file
def taskgen_method(func):
setattr(task_gen,func.__name__,func)
return func
def feature(*k):
def deco(func):
setattr(task_gen,func.__name__,func)
for name in k:
feats[name].update([func.__name__])
return func
return deco
def before_method(*k):
def deco(func):
setattr(task_gen,func.__name__,func)
for fun_name in k:
if not func.__name__ in task_gen.prec[fun_name]:
task_gen.prec[fun_name].append(func.__name__)
return func
return deco
before=before_method
def after_method(*k):
def deco(func):
setattr(task_gen,func.__name__,func)
for fun_name in k:
if not fun_name in task_gen.prec[func.__name__]:
task_gen.prec[func.__name__].append(fun_name)
return func
return deco
after=after_method
def extension(*k):
def deco(func):
setattr(task_gen,func.__name__,func)
for x in k:
task_gen.mappings[x]=func
return func
return deco
@taskgen_method
def to_nodes(self,lst,path=None):
tmp=[]
path=path or self.path
find=path.find_resource
if isinstance(lst,self.path.__class__):
lst=[lst]
for x in Utils.to_list(lst):
if isinstance(x,str):
node=find(x)
else:
node=x
if not node:
raise Errors.WafError("source not found: %r in %r"%(x,self))
tmp.append(node)
return tmp
@feature('*')
def process_source(self):
self.source=self.to_nodes(getattr(self,'source',[]))
for node in self.source:
self.get_hook(node)(self,node)
@feature('*')
@before_method('process_source')
def process_rule(self):
if not getattr(self,'rule',None):
return
name=str(getattr(self,'name',None)or self.target or getattr(self.rule,'__name__',self.rule))
try:
cache=self.bld.cache_rule_attr
except AttributeError:
cache=self.bld.cache_rule_attr={}
cls=None
if getattr(self,'cache_rule','True'):
try:
cls=cache[(name,self.rule)]
except KeyError:
pass
if not cls:
cls=Task.task_factory(name,self.rule,getattr(self,'vars',[]),shell=getattr(self,'shell',True),color=getattr(self,'color','BLUE'),scan=getattr(self,'scan',None))
if getattr(self,'scan',None):
cls.scan=self.scan
elif getattr(self,'deps',None):
def scan(self):
nodes=[]
for x in self.generator.to_list(getattr(self.generator,'deps',None)):
node=self.generator.path.find_resource(x)
if not node:
self.generator.bld.fatal('Could not find %r (was it declared?)'%x)
nodes.append(node)
return[nodes,[]]
cls.scan=scan
if getattr(self,'update_outputs',None):
Task.update_outputs(cls)
if getattr(self,'always',None):
Task.always_run(cls)
for x in['after','before','ext_in','ext_out']:
setattr(cls,x,getattr(self,x,[]))
if getattr(self,'cache_rule','True'):
cache[(name,self.rule)]=cls
tsk=self.create_task(name)
if getattr(self,'target',None):
if isinstance(self.target,str):
self.target=self.target.split()
if not isinstance(self.target,list):
self.target=[self.target]
for x in self.target:
if isinstance(x,str):
tsk.outputs.append(self.path.find_or_declare(x))
else:
x.parent.mkdir()
tsk.outputs.append(x)
if getattr(self,'install_path',None):
self.bld.install_files(self.install_path,tsk.outputs)
if getattr(self,'source',None):
tsk.inputs=self.to_nodes(self.source)
self.source=[]
if getattr(self,'cwd',None):
tsk.cwd=self.cwd
@feature('seq')
def sequence_order(self):
if self.meths and self.meths[-1]!='sequence_order':
self.meths.append('sequence_order')
return
if getattr(self,'seq_start',None):
return
if getattr(self.bld,'prev',None):
self.bld.prev.post()
for x in self.bld.prev.tasks:
for y in self.tasks:
y.set_run_after(x)
self.bld.prev=self
re_m4=re.compile('@(\w+)@',re.M)
class subst_pc(Task.Task):
def run(self):
if getattr(self.generator,'is_copy',None):
self.outputs[0].write(self.inputs[0].read('rb'),'wb')
if getattr(self.generator,'chmod',None):
os.chmod(self.outputs[0].abspath(),self.generator.chmod)
return None
if getattr(self.generator,'fun',None):
self.generator.fun(self)
code=self.inputs[0].read(encoding=getattr(self.generator,'encoding','ISO8859-1'))
if getattr(self.generator,'subst_fun',None):
code=self.generator.subst_fun(self,code)
if code:
self.outputs[0].write(code,encoding=getattr(self.generator,'encoding','ISO8859-1'))
return
code=code.replace('%','%%')
lst=[]
def repl(match):
g=match.group
if g(1):
lst.append(g(1))
return"%%(%s)s"%g(1)
return''
code=re_m4.sub(repl,code)
try:
d=self.generator.dct
except AttributeError:
d={}
for x in lst:
tmp=getattr(self.generator,x,'')or self.env.get_flat(x)or self.env.get_flat(x.upper())
d[x]=str(tmp)
code=code%d
self.outputs[0].write(code,encoding=getattr(self.generator,'encoding','ISO8859-1'))
self.generator.bld.raw_deps[self.uid()]=self.dep_vars=lst
try:delattr(self,'cache_sig')
except AttributeError:pass
if getattr(self.generator,'chmod',None):
os.chmod(self.outputs[0].abspath(),self.generator.chmod)
def sig_vars(self):
bld=self.generator.bld
env=self.env
upd=self.m.update
if getattr(self.generator,'fun',None):
upd(Utils.h_fun(self.generator.fun))
if getattr(self.generator,'subst_fun',None):
upd(Utils.h_fun(self.generator.subst_fun))
vars=self.generator.bld.raw_deps.get(self.uid(),[])
act_sig=bld.hash_env_vars(env,vars)
upd(act_sig)
lst=[getattr(self.generator,x,'')for x in vars]
upd(Utils.h_list(lst))
return self.m.digest()
@extension('.pc.in')
def add_pcfile(self,node):
tsk=self.create_task('subst_pc',node,node.change_ext('.pc','.pc.in'))
self.bld.install_files(getattr(self,'install_path','${LIBDIR}/pkgconfig/'),tsk.outputs)
class subst(subst_pc):
pass
@feature('subst')
@before_method('process_source','process_rule')
def process_subst(self):
src=Utils.to_list(getattr(self,'source',[]))
if isinstance(src,Node.Node):
src=[src]
tgt=Utils.to_list(getattr(self,'target',[]))
if isinstance(tgt,Node.Node):
tgt=[tgt]
if len(src)!=len(tgt):
raise Errors.WafError('invalid number of source/target for %r'%self)
for x,y in zip(src,tgt):
if not x or not y:
raise Errors.WafError('null source or target for %r'%self)
a,b=None,None
if isinstance(x,str)and isinstance(y,str)and x==y:
a=self.path.find_node(x)
b=self.path.get_bld().make_node(y)
if not os.path.isfile(b.abspath()):
b.sig=None
b.parent.mkdir()
else:
if isinstance(x,str):
a=self.path.find_resource(x)
elif isinstance(x,Node.Node):
a=x
if isinstance(y,str):
b=self.path.find_or_declare(y)
elif isinstance(y,Node.Node):
b=y
if not a:
raise Errors.WafError('cound not find %r for %r'%(x,self))
has_constraints=False
tsk=self.create_task('subst',a,b)
for k in('after','before','ext_in','ext_out'):
val=getattr(self,k,None)
if val:
has_constraints=True
setattr(tsk,k,val)
if not has_constraints and b.name.endswith('.h'):
tsk.before=[k for k in('c','cxx')if k in Task.classes]
inst_to=getattr(self,'install_path',None)
if inst_to:
self.bld.install_files(inst_to,b,chmod=getattr(self,'chmod',Utils.O644))
self.source=[]