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#! /usr/bin/env python
# encoding: utf-8
import sys
if sys.hexversion < 0x020400f0: from sets import Set as set
import os,traceback,copy
import Build,Task,Utils,Logs,Options
from Logs import debug,error,warn
from Constants import*
typos={'sources':'source','targets':'target','include':'includes','define':'defines','importpath':'importpaths','install_var':'install_path','install_subdir':'install_path','inst_var':'install_path','inst_dir':'install_path','feature':'features',}
class register_obj(type):
def __init__(cls,name,bases,dict):
super(register_obj,cls).__init__(name,bases,dict)
name=cls.__name__
suffix='_taskgen'
if name.endswith(suffix):
task_gen.classes[name.replace(suffix,'')]=cls
class task_gen(object, metaclass=register_obj):
mappings={}
mapped={}
prec=Utils.DefaultDict(list)
traits=Utils.DefaultDict(set)
classes={}
def __init__(self,*kw,**kwargs):
self.prec=Utils.DefaultDict(list)
self.source=''
self.target=''
self.meths=[]
self.mappings={}
self.features=list(kw)
self.tasks=[]
self.default_chmod=O644
self.default_install_path=None
self.allnodes=[]
self.bld=kwargs.get('bld',Build.bld)
self.env=self.bld.env.copy()
self.path=self.bld.path
self.name=''
self.idx=self.bld.idx[self.path.id]=self.bld.idx.get(self.path.id,0)+1
for key,val in kwargs.items():
setattr(self,key,val)
self.bld.task_manager.add_task_gen(self)
self.bld.all_task_gen.append(self)
def __str__(self):
return("<task_gen '%s' of type %s defined in %s>"%(self.name or self.target,self.__class__.__name__,str(self.path)))
def __setattr__(self,name,attr):
real=typos.get(name,name)
if real!=name:
warn('typo %s -> %s'%(name,real))
if Logs.verbose>0:
traceback.print_stack()
object.__setattr__(self,real,attr)
def to_list(self,value):
if isinstance(value,str):return value.split()
else:return value
def apply(self):
keys=set(self.meths)
self.features=Utils.to_list(self.features)
for x in self.features+['*']:
st=task_gen.traits[x]
if not st:
warn('feature %r does not exist - bind at least one method to it'%x)
keys.update(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)
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 Utils.WafError("graph has a cycle %s"%str(prec))
out.reverse()
self.meths=out
debug('task_gen: posting %s %d',self,id(self))
for x in out:
try:
v=getattr(self,x)
except AttributeError:
raise Utils.WafError("tried to retrieve %s which is not a valid method"%x)
debug('task_gen: -> %s (%d)',x,id(self))
v()
def post(self):
if not self.name:
if isinstance(self.target,list):
self.name=' '.join(self.target)
else:
self.name=self.target
if getattr(self,'posted',None):
return
self.apply()
self.posted=True
debug('task_gen: posted %s',self.name)
def get_hook(self,ext):
try:return self.mappings[ext]
except KeyError:
try:return task_gen.mappings[ext]
except KeyError:return None
def create_task(self,name,src=None,tgt=None,env=None):
env=env or self.env
task=Task.TaskBase.classes[name](env.copy(),generator=self)
if src:
task.set_inputs(src)
if tgt:
task.set_outputs(tgt)
self.tasks.append(task)
return task
def name_to_obj(self,name):
return self.bld.name_to_obj(name,self.env)
def find_sources_in_dirs(self,dirnames,excludes=[],exts=[]):
err_msg="'%s' attribute must be a list"
if not isinstance(excludes,list):
raise Utils.WscriptError(err_msg%'excludes')
if not isinstance(exts,list):
raise Utils.WscriptError(err_msg%'exts')
lst=[]
dirnames=self.to_list(dirnames)
ext_lst=exts or list(self.mappings.keys())+list(task_gen.mappings.keys())
for name in dirnames:
anode=self.path.find_dir(name)
if not anode or not anode.is_child_of(self.bld.srcnode):
raise Utils.WscriptError("Unable to use '%s' - either because it's not a relative path"", or it's not child of '%s'."%(name,self.bld.srcnode))
self.bld.rescan(anode)
for name in self.bld.cache_dir_contents[anode.id]:
if name.startswith('.'):
continue
(base,ext)=os.path.splitext(name)
if ext in ext_lst and not name in lst and not name in excludes:
lst.append((anode.relpath_gen(self.path)or'.')+os.path.sep+name)
lst.sort()
self.source=self.to_list(self.source)
if not self.source:self.source=lst
else:self.source+=lst
def clone(self,env):
newobj=task_gen(bld=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.__class__=self.__class__
if isinstance(env,str):
newobj.env=self.bld.all_envs[env].copy()
else:
newobj.env=env.copy()
return newobj
def get_inst_path(self):
return getattr(self,'_install_path',getattr(self,'default_install_path',''))
def set_inst_path(self,val):
self._install_path=val
install_path=property(get_inst_path,set_inst_path)
def get_chmod(self):
return getattr(self,'_chmod',getattr(self,'default_chmod',O644))
def set_chmod(self,val):
self._chmod=val
chmod=property(get_chmod,set_chmod)
def declare_extension(var,func):
try:
for x in Utils.to_list(var):
task_gen.mappings[x]=func
except:
raise Utils.WscriptError('declare_extension takes either a list or a string %r'%var)
task_gen.mapped[func.__name__]=func
def declare_order(*k):
assert(len(k)>1)
n=len(k)-1
for i in range(n):
f1=k[i]
f2=k[i+1]
if not f1 in task_gen.prec[f2]:
task_gen.prec[f2].append(f1)
def declare_chain(name='',action='',ext_in='',ext_out='',reentrant=True,color='BLUE',install=0,before=[],after=[],decider=None,rule=None,scan=None):
action=action or rule
if isinstance(action,str):
act=Task.simple_task_type(name,action,color=color)
else:
act=Task.task_type_from_func(name,action,color=color)
act.ext_in=tuple(Utils.to_list(ext_in))
act.ext_out=tuple(Utils.to_list(ext_out))
act.before=Utils.to_list(before)
act.after=Utils.to_list(after)
act.scan=scan
def x_file(self,node):
if decider:
ext=decider(self,node)
else:
ext=ext_out
if isinstance(ext,str):
out_source=node.change_ext(ext)
if reentrant:
self.allnodes.append(out_source)
elif isinstance(ext,list):
out_source=[node.change_ext(x)for x in ext]
if reentrant:
for i in range((reentrant is True)and len(out_source)or reentrant):
self.allnodes.append(out_source[i])
else:
raise Utils.WafError("do not know how to process %s"%str(ext))
tsk=self.create_task(name,node,out_source)
if node.__class__.bld.is_install:
tsk.install=install
declare_extension(act.ext_in,x_file)
return x_file
def bind_feature(name,methods):
lst=Utils.to_list(methods)
task_gen.traits[name].update(lst)
def taskgen(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:
task_gen.traits[name].update([func.__name__])
return func
return deco
def before(*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
def after(*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
def extension(var):
def deco(func):
setattr(task_gen,func.__name__,func)
try:
for x in Utils.to_list(var):
task_gen.mappings[x]=func
except:
raise Utils.WafError('extension takes either a list or a string %r'%var)
task_gen.mapped[func.__name__]=func
return func
return deco
def apply_core(self):
find_resource=self.path.find_resource
for filename in self.to_list(self.source):
x=self.get_hook(filename)
if x:
x(self,filename)
else:
node=find_resource(filename)
if not node:raise Utils.WafError("source not found: '%s' in '%s'"%(filename,str(self.path)))
self.allnodes.append(node)
for node in self.allnodes:
x=self.get_hook(node.suffix())
if not x:
raise Utils.WafError("Cannot guess how to process %s (got mappings %r in %r) -> try conf.check_tool(..)?"%(str(node),self.__class__.mappings.keys(),self.__class__))
x(self,node)
feature('*')(apply_core)
def exec_rule(self):
if not getattr(self,'rule',None):
return
try:
self.meths.remove('apply_core')
except ValueError:
pass
func=self.rule
vars2=[]
if isinstance(func,str):
(func,vars2)=Task.compile_fun('',self.rule,shell=getattr(self,'shell',True))
func.code=self.rule
name=getattr(self,'name',None)or self.target or self.rule
if not isinstance(name,str):
name=str(self.idx)
cls=Task.task_type_from_func(name,func,getattr(self,'vars',vars2))
cls.color=getattr(self,'color','BLUE')
tsk=self.create_task(name)
dep_vars=getattr(self,'dep_vars',['ruledeps'])
if dep_vars:
tsk.dep_vars=dep_vars
if isinstance(self.rule,str):
tsk.env.ruledeps=self.rule
else:
tsk.env.ruledeps=Utils.h_fun(self.rule)
if getattr(self,'target',None):
cls.quiet=True
tsk.outputs=[self.path.find_or_declare(x)for x in self.to_list(self.target)]
if getattr(self,'source',None):
cls.quiet=True
tsk.inputs=[]
for x in self.to_list(self.source):
y=self.path.find_resource(x)
if not y:
raise Utils.WafError('input file %r could not be found (%r)'%(x,self.path.abspath()))
tsk.inputs.append(y)
if self.allnodes:
tsk.inputs.extend(self.allnodes)
if getattr(self,'scan',None):
cls.scan=self.scan
if getattr(self,'install_path',None):
tsk.install_path=self.install_path
if getattr(self,'cwd',None):
tsk.cwd=self.cwd
if getattr(self,'on_results',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,[]))
feature('*')(exec_rule)
before('apply_core')(exec_rule)
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
feature('seq')(sequence_order)
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