ref: 8e21476cb956b1bf25f4b7f76c6ad770131bfe85
dir: /waflib/Task.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 os,shutil,re,tempfile
from waflib import Utils,Logs,Errors
NOT_RUN=0
MISSING=1
CRASHED=2
EXCEPTION=3
SKIPPED=8
SUCCESS=9
ASK_LATER=-1
SKIP_ME=-2
RUN_ME=-3
COMPILE_TEMPLATE_SHELL='''
def f(tsk):
env = tsk.env
gen = tsk.generator
bld = gen.bld
wd = getattr(tsk, 'cwd', None)
p = env.get_flat
tsk.last_cmd = cmd = \'\'\' %s \'\'\' % s
return tsk.exec_command(cmd, cwd=wd, env=env.env or None)
'''
COMPILE_TEMPLATE_NOSHELL='''
def f(tsk):
env = tsk.env
gen = tsk.generator
bld = gen.bld
wd = getattr(tsk, 'cwd', None)
def to_list(xx):
if isinstance(xx, str): return [xx]
return xx
tsk.last_cmd = lst = []
%s
lst = [x for x in lst if x]
return tsk.exec_command(lst, cwd=wd, env=env.env or None)
'''
def cache_outputs(cls):
m1=cls.run
def run(self):
bld=self.generator.bld
if bld.cache_global and not bld.nocache:
if self.can_retrieve_cache():
return 0
return m1(self)
cls.run=run
m2=cls.post_run
def post_run(self):
bld=self.generator.bld
ret=m2(self)
if bld.cache_global and not bld.nocache:
self.put_files_cache()
return ret
cls.post_run=post_run
return cls
classes={}
class store_task_type(type):
def __init__(cls,name,bases,dict):
super(store_task_type,cls).__init__(name,bases,dict)
name=cls.__name__
if name.endswith('_task'):
name=name.replace('_task','')
if name!='evil'and name!='TaskBase':
global classes
if getattr(cls,'run_str',None):
(f,dvars)=compile_fun(cls.run_str,cls.shell)
cls.hcode=cls.run_str
cls.run_str=None
cls.run=f
cls.vars=list(set(cls.vars+dvars))
cls.vars.sort()
elif getattr(cls,'run',None)and not'hcode'in cls.__dict__:
cls.hcode=Utils.h_fun(cls.run)
if not getattr(cls,'nocache',None):
cls=cache_outputs(cls)
getattr(cls,'register',classes)[name]=cls
evil=store_task_type('evil',(object,),{})
class TaskBase(evil):
color='GREEN'
ext_in=[]
ext_out=[]
before=[]
after=[]
hcode=''
def __init__(self,*k,**kw):
self.hasrun=NOT_RUN
try:
self.generator=kw['generator']
except KeyError:
self.generator=self
def __repr__(self):
return'\n\t{task %r: %s %s}'%(self.__class__.__name__,id(self),str(getattr(self,'fun','')))
def __str__(self):
if hasattr(self,'fun'):
return'executing: %s\n'%self.fun.__name__
return self.__class__.__name__+'\n'
def __hash__(self):
return id(self)
def exec_command(self,cmd,**kw):
bld=self.generator.bld
try:
if not kw.get('cwd',None):
kw['cwd']=bld.cwd
except AttributeError:
bld.cwd=kw['cwd']=bld.variant_dir
return bld.exec_command(cmd,**kw)
def runnable_status(self):
return RUN_ME
def process(self):
m=self.master
if m.stop:
m.out.put(self)
return
try:
del self.generator.bld.task_sigs[self.uid()]
except KeyError:
pass
try:
self.generator.bld.returned_tasks.append(self)
self.log_display(self.generator.bld)
ret=self.run()
except Exception:
self.err_msg=Utils.ex_stack()
self.hasrun=EXCEPTION
m.error_handler(self)
m.out.put(self)
return
if ret:
self.err_code=ret
self.hasrun=CRASHED
else:
try:
self.post_run()
except Errors.WafError:
pass
except Exception:
self.err_msg=Utils.ex_stack()
self.hasrun=EXCEPTION
else:
self.hasrun=SUCCESS
if self.hasrun!=SUCCESS:
m.error_handler(self)
m.out.put(self)
def run(self):
if hasattr(self,'fun'):
return self.fun(self)
return 0
def post_run(self):
pass
def log_display(self,bld):
bld.to_log(self.display())
def display(self):
col1=Logs.colors(self.color)
col2=Logs.colors.NORMAL
master=self.master
def cur():
tmp=-1
if hasattr(master,'ready'):
tmp-=master.ready.qsize()
return master.processed+tmp
if self.generator.bld.progress_bar==1:
return self.generator.bld.progress_line(cur(),master.total,col1,col2)
if self.generator.bld.progress_bar==2:
ela=str(self.generator.bld.timer)
try:
ins=','.join([n.name for n in self.inputs])
except AttributeError:
ins=''
try:
outs=','.join([n.name for n in self.outputs])
except AttributeError:
outs=''
return'|Total %s|Current %s|Inputs %s|Outputs %s|Time %s|\n'%(master.total,cur(),ins,outs,ela)
s=str(self)
if not s:
return None
total=master.total
n=len(str(total))
fs='[%%%dd/%%%dd] %%s%%s%%s'%(n,n)
return fs%(cur(),total,col1,s,col2)
def attr(self,att,default=None):
ret=getattr(self,att,self)
if ret is self:return getattr(self.__class__,att,default)
return ret
def hash_constraints(self):
cls=self.__class__
tup=(str(cls.before),str(cls.after),str(cls.ext_in),str(cls.ext_out),cls.__name__,cls.hcode)
h=hash(tup)
return h
def format_error(self):
msg=getattr(self,'last_cmd','')
name=getattr(self.generator,'name','')
if getattr(self,"err_msg",None):
return self.err_msg
elif not self.hasrun:
return'task in %r was not executed for some reason: %r'%(name,self)
elif self.hasrun==CRASHED:
try:
return' -> task in %r failed (exit status %r): %r\n%r'%(name,self.err_code,self,msg)
except AttributeError:
return' -> task in %r failed: %r\n%r'%(name,self,msg)
elif self.hasrun==MISSING:
return' -> missing files in %r: %r\n%r'%(name,self,msg)
else:
return'invalid status for task in %r: %r'%(name,self.hasrun)
def colon(self,var1,var2):
tmp=self.env[var1]
if isinstance(var2,str):
it=self.env[var2]
else:
it=var2
if isinstance(tmp,str):
return[tmp%x for x in it]
else:
if Logs.verbose and not tmp and it:
Logs.warn('Missing env variable %r for task %r (generator %r)'%(var1,self,self.generator))
lst=[]
for y in it:
lst.extend(tmp)
lst.append(y)
return lst
class Task(TaskBase):
vars=[]
shell=False
def __init__(self,*k,**kw):
TaskBase.__init__(self,*k,**kw)
self.env=kw['env']
self.inputs=[]
self.outputs=[]
self.dep_nodes=[]
self.run_after=set([])
def __str__(self):
env=self.env
src_str=' '.join([a.nice_path()for a in self.inputs])
tgt_str=' '.join([a.nice_path()for a in self.outputs])
if self.outputs:sep=' -> '
else:sep=''
return'%s: %s%s%s\n'%(self.__class__.__name__.replace('_task',''),src_str,sep,tgt_str)
def __repr__(self):
try:
ins=",".join([x.name for x in self.inputs])
outs=",".join([x.name for x in self.outputs])
except AttributeError:
ins=",".join([str(x)for x in self.inputs])
outs=",".join([str(x)for x in self.outputs])
return"".join(['\n\t{task %r: '%id(self),self.__class__.__name__," ",ins," -> ",outs,'}'])
def uid(self):
try:
return self.uid_
except AttributeError:
m=Utils.md5()
up=m.update
up(self.__class__.__name__)
for x in self.inputs+self.outputs:
up(x.abspath())
self.uid_=m.digest()
return self.uid_
def set_inputs(self,inp):
if isinstance(inp,list):self.inputs+=inp
else:self.inputs.append(inp)
def set_outputs(self,out):
if isinstance(out,list):self.outputs+=out
else:self.outputs.append(out)
def set_run_after(self,task):
assert isinstance(task,TaskBase)
self.run_after.add(task)
def signature(self):
try:return self.cache_sig
except AttributeError:pass
self.m=Utils.md5()
self.m.update(self.hcode)
self.sig_explicit_deps()
self.sig_vars()
if self.scan:
try:
self.sig_implicit_deps()
except Errors.TaskRescan:
return self.signature()
ret=self.cache_sig=self.m.digest()
return ret
def runnable_status(self):
for t in self.run_after:
if not t.hasrun:
return ASK_LATER
bld=self.generator.bld
try:
new_sig=self.signature()
except Errors.TaskNotReady:
return ASK_LATER
key=self.uid()
try:
prev_sig=bld.task_sigs[key]
except KeyError:
Logs.debug("task: task %r must run as it was never run before or the task code changed"%self)
return RUN_ME
for node in self.outputs:
try:
if node.sig!=new_sig:
return RUN_ME
except AttributeError:
Logs.debug("task: task %r must run as the output nodes do not exist"%self)
return RUN_ME
if new_sig!=prev_sig:
return RUN_ME
return SKIP_ME
def post_run(self):
bld=self.generator.bld
sig=self.signature()
for node in self.outputs:
try:
os.stat(node.abspath())
except OSError:
self.hasrun=MISSING
self.err_msg='-> missing file: %r'%node.abspath()
raise Errors.WafError(self.err_msg)
node.sig=sig
bld.task_sigs[self.uid()]=self.cache_sig
def sig_explicit_deps(self):
bld=self.generator.bld
upd=self.m.update
for x in self.inputs+self.dep_nodes:
try:
upd(x.get_bld_sig())
except(AttributeError,TypeError):
raise Errors.WafError('Missing node signature for %r (required by %r)'%(x,self))
if bld.deps_man:
additional_deps=bld.deps_man
for x in self.inputs+self.outputs:
try:
d=additional_deps[id(x)]
except KeyError:
continue
for v in d:
if isinstance(v,bld.root.__class__):
try:
v=v.get_bld_sig()
except AttributeError:
raise Errors.WafError('Missing node signature for %r (required by %r)'%(v,self))
elif hasattr(v,'__call__'):
v=v()
upd(v)
return self.m.digest()
def sig_vars(self):
bld=self.generator.bld
env=self.env
upd=self.m.update
act_sig=bld.hash_env_vars(env,self.__class__.vars)
upd(act_sig)
dep_vars=getattr(self,'dep_vars',None)
if dep_vars:
upd(bld.hash_env_vars(env,dep_vars))
return self.m.digest()
scan=None
def sig_implicit_deps(self):
bld=self.generator.bld
key=self.uid()
prev=bld.task_sigs.get((key,'imp'),[])
if prev:
try:
if prev==self.compute_sig_implicit_deps():
return prev
except Exception:
for x in bld.node_deps.get(self.uid(),[]):
if x.is_child_of(bld.srcnode):
try:
os.stat(x.abspath())
except OSError:
try:
del x.parent.children[x.name]
except KeyError:
pass
del bld.task_sigs[(key,'imp')]
raise Errors.TaskRescan('rescan')
(nodes,names)=self.scan()
if Logs.verbose:
Logs.debug('deps: scanner for %s returned %s %s'%(str(self),str(nodes),str(names)))
bld.node_deps[key]=nodes
bld.raw_deps[key]=names
self.are_implicit_nodes_ready()
try:
bld.task_sigs[(key,'imp')]=sig=self.compute_sig_implicit_deps()
except Exception:
if Logs.verbose:
for k in bld.node_deps.get(self.uid(),[]):
try:
k.get_bld_sig()
except Exception:
Logs.warn('Missing signature for node %r (may cause rebuilds)'%k)
else:
return sig
def compute_sig_implicit_deps(self):
upd=self.m.update
bld=self.generator.bld
self.are_implicit_nodes_ready()
for k in bld.node_deps.get(self.uid(),[]):
upd(k.get_bld_sig())
return self.m.digest()
def are_implicit_nodes_ready(self):
bld=self.generator.bld
try:
cache=bld.dct_implicit_nodes
except AttributeError:
bld.dct_implicit_nodes=cache={}
try:
dct=cache[bld.cur]
except KeyError:
dct=cache[bld.cur]={}
for tsk in bld.cur_tasks:
for x in tsk.outputs:
dct[x]=tsk
modified=False
for x in bld.node_deps.get(self.uid(),[]):
if x in dct:
self.run_after.add(dct[x])
modified=True
if modified:
for tsk in self.run_after:
if not tsk.hasrun:
raise Errors.TaskNotReady('not ready')
def can_retrieve_cache(self):
if not getattr(self,'outputs',None):
return None
sig=self.signature()
ssig=Utils.to_hex(self.uid())+Utils.to_hex(sig)
dname=os.path.join(self.generator.bld.cache_global,ssig)
try:
t1=os.stat(dname).st_mtime
except OSError:
return None
for node in self.outputs:
orig=os.path.join(dname,node.name)
try:
shutil.copy2(orig,node.abspath())
os.utime(orig,None)
except(OSError,IOError):
Logs.debug('task: failed retrieving file')
return None
try:
t2=os.stat(dname).st_mtime
except OSError:
return None
if t1!=t2:
return None
for node in self.outputs:
node.sig=sig
if self.generator.bld.progress_bar<1:
self.generator.bld.to_log('restoring from cache %r\n'%node.abspath())
self.cached=True
return True
def put_files_cache(self):
if getattr(self,'cached',None):
return None
if not getattr(self,'outputs',None):
return None
sig=self.signature()
ssig=Utils.to_hex(self.uid())+Utils.to_hex(sig)
dname=os.path.join(self.generator.bld.cache_global,ssig)
tmpdir=tempfile.mkdtemp(prefix=self.generator.bld.cache_global+os.sep+'waf')
try:
shutil.rmtree(dname)
except Exception:
pass
try:
for node in self.outputs:
dest=os.path.join(tmpdir,node.name)
shutil.copy2(node.abspath(),dest)
except(OSError,IOError):
try:
shutil.rmtree(tmpdir)
except Exception:
pass
else:
try:
os.rename(tmpdir,dname)
except OSError:
try:
shutil.rmtree(tmpdir)
except Exception:
pass
else:
try:
os.chmod(dname,Utils.O755)
except Exception:
pass
def is_before(t1,t2):
to_list=Utils.to_list
for k in to_list(t2.ext_in):
if k in to_list(t1.ext_out):
return 1
if t1.__class__.__name__ in to_list(t2.after):
return 1
if t2.__class__.__name__ in to_list(t1.before):
return 1
return 0
def set_file_constraints(tasks):
ins=Utils.defaultdict(set)
outs=Utils.defaultdict(set)
for x in tasks:
for a in getattr(x,'inputs',[])+getattr(x,'dep_nodes',[]):
ins[id(a)].add(x)
for a in getattr(x,'outputs',[]):
outs[id(a)].add(x)
links=set(ins.keys()).intersection(outs.keys())
for k in links:
for a in ins[k]:
a.run_after.update(outs[k])
def set_precedence_constraints(tasks):
cstr_groups=Utils.defaultdict(list)
for x in tasks:
h=x.hash_constraints()
cstr_groups[h].append(x)
keys=list(cstr_groups.keys())
maxi=len(keys)
for i in range(maxi):
t1=cstr_groups[keys[i]][0]
for j in range(i+1,maxi):
t2=cstr_groups[keys[j]][0]
if is_before(t1,t2):
a=i
b=j
elif is_before(t2,t1):
a=j
b=i
else:
continue
aval=set(cstr_groups[keys[a]])
for x in cstr_groups[keys[b]]:
x.run_after.update(aval)
def funex(c):
dc={}
exec(c,dc)
return dc['f']
reg_act=re.compile(r"(?P<backslash>\\)|(?P<dollar>\$\$)|(?P<subst>\$\{(?P<var>\w+)(?P<code>.*?)\})",re.M)
def compile_fun_shell(line):
extr=[]
def repl(match):
g=match.group
if g('dollar'):return"$"
elif g('backslash'):return'\\\\'
elif g('subst'):extr.append((g('var'),g('code')));return"%s"
return None
line=reg_act.sub(repl,line)or line
parm=[]
dvars=[]
app=parm.append
for(var,meth)in extr:
if var=='SRC':
if meth:app('tsk.inputs%s'%meth)
else:app('" ".join([a.path_from(bld.bldnode) for a in tsk.inputs])')
elif var=='TGT':
if meth:app('tsk.outputs%s'%meth)
else:app('" ".join([a.path_from(bld.bldnode) for a in tsk.outputs])')
elif meth:
if meth.startswith(':'):
m=meth[1:]
if m=='SRC':
m='[a.path_from(bld.bldnode) for a in tsk.inputs]'
elif m=='TGT':
m='[a.path_from(bld.bldnode) for a in tsk.outputs]'
elif m[:3]not in('tsk','gen','bld'):
dvars.extend([var,meth[1:]])
m='%r'%m
app('" ".join(tsk.colon(%r, %s))'%(var,m))
else:
app('%s%s'%(var,meth))
else:
if not var in dvars:dvars.append(var)
app("p('%s')"%var)
if parm:parm="%% (%s) "%(',\n\t\t'.join(parm))
else:parm=''
c=COMPILE_TEMPLATE_SHELL%(line,parm)
Logs.debug('action: %s'%c.strip().splitlines())
return(funex(c),dvars)
def compile_fun_noshell(line):
extr=[]
def repl(match):
g=match.group
if g('dollar'):return"$"
elif g('subst'):extr.append((g('var'),g('code')));return"<<|@|>>"
return None
line2=reg_act.sub(repl,line)
params=line2.split('<<|@|>>')
assert(extr)
buf=[]
dvars=[]
app=buf.append
for x in range(len(extr)):
params[x]=params[x].strip()
if params[x]:
app("lst.extend(%r)"%params[x].split())
(var,meth)=extr[x]
if var=='SRC':
if meth:app('lst.append(tsk.inputs%s)'%meth)
else:app("lst.extend([a.path_from(bld.bldnode) for a in tsk.inputs])")
elif var=='TGT':
if meth:app('lst.append(tsk.outputs%s)'%meth)
else:app("lst.extend([a.path_from(bld.bldnode) for a in tsk.outputs])")
elif meth:
if meth.startswith(':'):
m=meth[1:]
if m=='SRC':
m='[a.path_from(bld.bldnode) for a in tsk.inputs]'
elif m=='TGT':
m='[a.path_from(bld.bldnode) for a in tsk.outputs]'
elif m[:3]not in('tsk','gen','bld'):
dvars.extend([var,m])
m='%r'%m
app('lst.extend(tsk.colon(%r, %s))'%(var,m))
else:
app('lst.extend(gen.to_list(%s%s))'%(var,meth))
else:
app('lst.extend(to_list(env[%r]))'%var)
if not var in dvars:dvars.append(var)
if extr:
if params[-1]:
app("lst.extend(%r)"%params[-1].split())
fun=COMPILE_TEMPLATE_NOSHELL%"\n\t".join(buf)
Logs.debug('action: %s'%fun.strip().splitlines())
return(funex(fun),dvars)
def compile_fun(line,shell=False):
if line.find('<')>0 or line.find('>')>0 or line.find('&&')>0:
shell=True
if shell:
return compile_fun_shell(line)
else:
return compile_fun_noshell(line)
def task_factory(name,func=None,vars=None,color='GREEN',ext_in=[],ext_out=[],before=[],after=[],shell=False,scan=None):
params={'vars':vars or[],'color':color,'name':name,'ext_in':Utils.to_list(ext_in),'ext_out':Utils.to_list(ext_out),'before':Utils.to_list(before),'after':Utils.to_list(after),'shell':shell,'scan':scan,}
if isinstance(func,str):
params['run_str']=func
else:
params['run']=func
cls=type(Task)(name,(Task,),params)
global classes
classes[name]=cls
return cls
def always_run(cls):
old=cls.runnable_status
def always(self):
ret=old(self)
if ret==SKIP_ME:
ret=RUN_ME
return ret
cls.runnable_status=always
return cls
def update_outputs(cls):
old_post_run=cls.post_run
def post_run(self):
old_post_run(self)
for node in self.outputs:
node.sig=Utils.h_file(node.abspath())
self.generator.bld.task_sigs[node.abspath()]=self.uid()
cls.post_run=post_run
old_runnable_status=cls.runnable_status
def runnable_status(self):
status=old_runnable_status(self)
if status!=RUN_ME:
return status
try:
bld=self.generator.bld
prev_sig=bld.task_sigs[self.uid()]
if prev_sig==self.signature():
for x in self.outputs:
if not x.sig or bld.task_sigs[x.abspath()]!=self.uid():
return RUN_ME
return SKIP_ME
except KeyError:
pass
except IndexError:
pass
except AttributeError:
pass
return RUN_ME
cls.runnable_status=runnable_status
return cls