2 # ex:ts=4:sw=4:sts=4:et
3 # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
5 BitBake 'Event' implementation
7 Classes and functions for manipulating 'events' in the
10 Copyright (C) 2003, 2004 Chris Larson
12 This program is free software; you can redistribute it and/or modify it under
13 the terms of the GNU General Public License as published by the Free Software
14 Foundation; either version 2 of the License, or (at your option) any later
17 This program is distributed in the hope that it will be useful, but WITHOUT
18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
19 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License along with
22 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
23 Place, Suite 330, Boston, MA 02111-1307 USA.
31 """Base class for events"""
34 def __init__(self, d = bb.data.init()):
40 def setData(self, data):
43 data = property(getData, setData, None, "data property")
49 AlreadyRegistered = 14
55 def tmpHandler(event):
56 """Default handler for code events"""
59 def defaultTmpHandler():
60 tmp = "def tmpHandler(e):\n\t\"\"\"heh\"\"\"\n\treturn NotHandled"
61 comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event.defaultTmpHandler")
65 """Fire off an Event"""
67 if type(h).__name__ == "code":
69 if tmpHandler(event) == Handled:
72 if h(event) == Handled:
76 def register(name, handler):
77 """Register an Event handler"""
80 if name in _handlers_dict:
81 return AlreadyRegistered
83 if handler is not None:
84 # handle string containing python code
85 if type(handler).__name__ == "str":
86 _registerCode(handler)
88 _handlers.append(handler)
90 _handlers_dict[name] = 1
93 def _registerCode(handlerStr):
94 """Register a 'code' Event.
95 Deprecated interface; call register instead.
97 Expects to be passed python code as a string, which will
98 be passed in turn to compile() and then exec(). Note that
99 the code will be within a function, so should have had
100 appropriate tabbing put in place."""
101 tmp = "def tmpHandler(e):\n%s" % handlerStr
102 comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event._registerCode")
103 # prevent duplicate registration
104 _handlers.append(comp)
106 def remove(name, handler):
107 """Remove an Event handler"""
109 _handlers_dict.pop(name)
110 if type(handler).__name__ == "str":
111 return _removeCode(handler)
113 _handlers.remove(handler)
115 def _removeCode(handlerStr):
116 """Remove a 'code' Event handler
117 Deprecated interface; call remove instead."""
118 tmp = "def tmpHandler(e):\n%s" % handlerStr
119 comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event._removeCode")
120 _handlers.remove(comp)
123 """Returns the name of a class or class instance"""
124 if getattr(e, "__name__", None) == None:
125 return e.__class__.__name__
130 class PkgBase(Event):
131 """Base class for package events"""
133 def __init__(self, t, d = bb.data.init()):
135 Event.__init__(self, d)
140 def setPkg(self, pkg):
143 pkg = property(getPkg, setPkg, None, "pkg property")
146 class BuildBase(Event):
147 """Base class for bbmake run events"""
149 def __init__(self, n, p, c, failures = 0):
152 Event.__init__(self, c)
153 self._failures = failures
158 def setPkgs(self, pkgs):
164 def setName(self, name):
170 def setCfg(self, cfg):
173 def getFailures(self):
175 Return the number of failed packages
177 return self._failures
179 pkgs = property(getPkgs, setPkgs, None, "pkgs property")
180 name = property(getName, setName, None, "name property")
181 cfg = property(getCfg, setCfg, None, "cfg property")
184 class DepBase(PkgBase):
185 """Base class for dependency events"""
187 def __init__(self, t, data, d):
189 PkgBase.__init__(self, t, data)
194 def setDep(self, dep):
197 dep = property(getDep, setDep, None, "dep property")
200 class PkgStarted(PkgBase):
201 """Package build started"""
204 class PkgFailed(PkgBase):
205 """Package build failed"""
208 class PkgSucceeded(PkgBase):
209 """Package build completed"""
212 class BuildStarted(BuildBase):
213 """bbmake build run started"""
216 class BuildCompleted(BuildBase):
217 """bbmake build run completed"""
220 class UnsatisfiedDep(DepBase):
221 """Unsatisfied Dependency"""
224 class RecursiveDep(DepBase):
225 """Recursive Dependency"""
227 class NoProvider(Event):
228 """No Provider for an Event"""
230 def __init__(self, item, data,runtime=False):
231 Event.__init__(self, data)
233 self._runtime = runtime
241 class MultipleProviders(Event):
242 """Multiple Providers"""
244 def __init__(self, item, candidates, data, runtime = False):
245 Event.__init__(self, data)
247 self._candidates = candidates
248 self._is_runtime = runtime
252 Is this a runtime issue?
254 return self._is_runtime
258 The name for the to be build item
262 def getCandidates(self):
264 Get the possible Candidates for a PROVIDER.
266 return self._candidates