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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
AbstractSyntaxTree classes for the Bitbake language
"""
# Copyright (C) 2003, 2004 Chris Larson
# Copyright (C) 2003, 2004 Phil Blundell
# Copyright (C) 2009 Holger Hans Peter Freyther
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from __future__ import absolute_import
from future_builtins import filter
import re
import string
import logging
import bb
import itertools
from bb import methodpool
from bb.parse import logger
_bbversions_re = re.compile(r"\[(?P<from>[0-9]+)-(?P<to>[0-9]+)\]")
class StatementGroup(list):
def eval(self, data):
for statement in self:
statement.eval(data)
class AstNode(object):
def __init__(self, filename, lineno):
self.filename = filename
self.lineno = lineno
class IncludeNode(AstNode):
def __init__(self, filename, lineno, what_file, force):
AstNode.__init__(self, filename, lineno)
self.what_file = what_file
self.force = force
def eval(self, data):
"""
Include the file and evaluate the statements
"""
s = data.expand(self.what_file)
logger.debug(2, "CONF %s:%s: including %s", self.filename, self.lineno, s)
# TODO: Cache those includes... maybe not here though
if self.force:
bb.parse.ConfHandler.include(self.filename, s, self.lineno, data, "include required")
else:
bb.parse.ConfHandler.include(self.filename, s, self.lineno, data, False)
class ExportNode(AstNode):
def __init__(self, filename, lineno, var):
AstNode.__init__(self, filename, lineno)
self.var = var
def eval(self, data):
data.setVarFlag(self.var, "export", 1, op = 'exported')
class DataNode(AstNode):
"""
Various data related updates. For the sake of sanity
we have one class doing all this. This means that all
this need to be re-evaluated... we might be able to do
that faster with multiple classes.
"""
def __init__(self, filename, lineno, groupd):
AstNode.__init__(self, filename, lineno)
self.groupd = groupd
def getFunc(self, key, data):
if 'flag' in self.groupd and self.groupd['flag'] != None:
return data.getVarFlag(key, self.groupd['flag'], expand=False, noweakdefault=True)
else:
return data.getVar(key, False, noweakdefault=True, parsing=True)
def eval(self, data):
groupd = self.groupd
key = groupd["var"]
loginfo = {
'variable': key,
'file': self.filename,
'line': self.lineno,
}
if "exp" in groupd and groupd["exp"] != None:
data.setVarFlag(key, "export", 1, op = 'exported', **loginfo)
op = "set"
if "ques" in groupd and groupd["ques"] != None:
val = self.getFunc(key, data)
op = "set?"
if val == None:
val = groupd["value"]
elif "colon" in groupd and groupd["colon"] != None:
e = data.createCopy()
bb.data.update_data(e)
op = "immediate"
val = e.expand(groupd["value"], key + "[:=]")
elif "append" in groupd and groupd["append"] != None:
op = "append"
val = "%s %s" % ((self.getFunc(key, data) or ""), groupd["value"])
elif "prepend" in groupd and groupd["prepend"] != None:
op = "prepend"
val = "%s %s" % (groupd["value"], (self.getFunc(key, data) or ""))
elif "postdot" in groupd and groupd["postdot"] != None:
op = "postdot"
val = "%s%s" % ((self.getFunc(key, data) or ""), groupd["value"])
elif "predot" in groupd and groupd["predot"] != None:
op = "predot"
val = "%s%s" % (groupd["value"], (self.getFunc(key, data) or ""))
else:
val = groupd["value"]
flag = None
if 'flag' in groupd and groupd['flag'] != None:
flag = groupd['flag']
elif groupd["lazyques"]:
flag = "_defaultval"
loginfo['op'] = op
loginfo['detail'] = groupd["value"]
if flag:
data.setVarFlag(key, flag, val, **loginfo)
else:
data.setVar(key, val, parsing=True, **loginfo)
class MethodNode(AstNode):
tr_tbl = string.maketrans('/.+-@%&', '_______')
def __init__(self, filename, lineno, func_name, body, python, fakeroot):
AstNode.__init__(self, filename, lineno)
self.func_name = func_name
self.body = body
self.python = python
self.fakeroot = fakeroot
def eval(self, data):
text = '\n'.join(self.body)
funcname = self.func_name
if self.func_name == "__anonymous":
funcname = ("__anon_%s_%s" % (self.lineno, self.filename.translate(MethodNode.tr_tbl)))
self.python = True
text = "def %s(d):\n" % (funcname) + text
bb.methodpool.insert_method(funcname, text, self.filename, self.lineno - len(self.body))
anonfuncs = data.getVar('__BBANONFUNCS', False) or []
anonfuncs.append(funcname)
data.setVar('__BBANONFUNCS', anonfuncs)
if data.getVar(funcname, False):
# clean up old version of this piece of metadata, as its
# flags could cause problems
data.delVarFlag(funcname, 'python')
data.delVarFlag(funcname, 'fakeroot')
if self.python:
data.setVarFlag(funcname, "python", "1")
if self.fakeroot:
data.setVarFlag(funcname, "fakeroot", "1")
data.setVarFlag(funcname, "func", 1)
data.setVar(funcname, text, parsing=True)
data.setVarFlag(funcname, 'filename', self.filename)
data.setVarFlag(funcname, 'lineno', str(self.lineno - len(self.body)))
class PythonMethodNode(AstNode):
def __init__(self, filename, lineno, function, modulename, body):
AstNode.__init__(self, filename, lineno)
self.function = function
self.modulename = modulename
self.body = body
def eval(self, data):
# Note we will add root to parsedmethods after having parse
# 'this' file. This means we will not parse methods from
# bb classes twice
text = '\n'.join(self.body)
bb.methodpool.insert_method(self.modulename, text, self.filename, self.lineno - len(self.body) - 1)
data.setVarFlag(self.function, "func", 1)
data.setVarFlag(self.function, "python", 1)
data.setVar(self.function, text, parsing=True)
data.setVarFlag(self.function, 'filename', self.filename)
data.setVarFlag(self.function, 'lineno', str(self.lineno - len(self.body) - 1))
class ExportFuncsNode(AstNode):
def __init__(self, filename, lineno, fns, classname):
AstNode.__init__(self, filename, lineno)
self.n = fns.split()
self.classname = classname
def eval(self, data):
for func in self.n:
calledfunc = self.classname + "_" + func
if data.getVar(func, False) and not data.getVarFlag(func, 'export_func', False):
continue
if data.getVar(func, False):
data.setVarFlag(func, 'python', None)
data.setVarFlag(func, 'func', None)
for flag in [ "func", "python" ]:
if data.getVarFlag(calledfunc, flag, False):
data.setVarFlag(func, flag, data.getVarFlag(calledfunc, flag, False))
for flag in [ "dirs" ]:
if data.getVarFlag(func, flag, False):
data.setVarFlag(calledfunc, flag, data.getVarFlag(func, flag, False))
data.setVarFlag(func, "filename", "autogenerated")
data.setVarFlag(func, "lineno", 1)
if data.getVarFlag(calledfunc, "python", False):
data.setVar(func, " bb.build.exec_func('" + calledfunc + "', d)\n", parsing=True)
else:
if "-" in self.classname:
bb.fatal("The classname %s contains a dash character and is calling an sh function %s using EXPORT_FUNCTIONS. Since a dash is illegal in sh function names, this cannot work, please rename the class or don't use EXPORT_FUNCTIONS." % (self.classname, calledfunc))
data.setVar(func, " " + calledfunc + "\n", parsing=True)
data.setVarFlag(func, 'export_func', '1')
class AddTaskNode(AstNode):
def __init__(self, filename, lineno, func, before, after):
AstNode.__init__(self, filename, lineno)
self.func = func
self.before = before
self.after = after
def eval(self, data):
bb.build.addtask(self.func, self.before, self.after, data)
class DelTaskNode(AstNode):
def __init__(self, filename, lineno, func):
AstNode.__init__(self, filename, lineno)
self.func = func
def eval(self, data):
bb.build.deltask(self.func, data)
class BBHandlerNode(AstNode):
def __init__(self, filename, lineno, fns):
AstNode.__init__(self, filename, lineno)
self.hs = fns.split()
def eval(self, data):
bbhands = data.getVar('__BBHANDLERS', False) or []
for h in self.hs:
bbhands.append(h)
data.setVarFlag(h, "handler", 1)
data.setVar('__BBHANDLERS', bbhands)
class InheritNode(AstNode):
def __init__(self, filename, lineno, classes):
AstNode.__init__(self, filename, lineno)
self.classes = classes
def eval(self, data):
bb.parse.BBHandler.inherit(self.classes, self.filename, self.lineno, data)
def handleInclude(statements, filename, lineno, m, force):
statements.append(IncludeNode(filename, lineno, m.group(1), force))
def handleExport(statements, filename, lineno, m):
statements.append(ExportNode(filename, lineno, m.group(1)))
def handleData(statements, filename, lineno, groupd):
statements.append(DataNode(filename, lineno, groupd))
def handleMethod(statements, filename, lineno, func_name, body, python, fakeroot):
statements.append(MethodNode(filename, lineno, func_name, body, python, fakeroot))
def handlePythonMethod(statements, filename, lineno, funcname, modulename, body):
statements.append(PythonMethodNode(filename, lineno, funcname, modulename, body))
def handleExportFuncs(statements, filename, lineno, m, classname):
statements.append(ExportFuncsNode(filename, lineno, m.group(1), classname))
def handleAddTask(statements, filename, lineno, m):
func = m.group("func")
before = m.group("before")
after = m.group("after")
if func is None:
return
statements.append(AddTaskNode(filename, lineno, func, before, after))
def handleDelTask(statements, filename, lineno, m):
func = m.group("func")
if func is None:
return
statements.append(DelTaskNode(filename, lineno, func))
def handleBBHandlers(statements, filename, lineno, m):
statements.append(BBHandlerNode(filename, lineno, m.group(1)))
def handleInherit(statements, filename, lineno, m):
classes = m.group(1)
statements.append(InheritNode(filename, lineno, classes))
def finalize(fn, d, variant = None):
all_handlers = {}
for var in d.getVar('__BBHANDLERS', False) or []:
# try to add the handler
handlerfn = d.getVarFlag(var, "filename", False)
handlerln = int(d.getVarFlag(var, "lineno", False))
bb.event.register(var, d.getVar(var, False), (d.getVarFlag(var, "eventmask", True) or "").split(), handlerfn, handlerln)
bb.event.fire(bb.event.RecipePreFinalise(fn), d)
bb.data.expandKeys(d)
bb.data.update_data(d)
code = []
for funcname in d.getVar("__BBANONFUNCS", False) or []:
code.append("%s(d)" % funcname)
bb.utils.better_exec("\n".join(code), {"d": d})
bb.data.update_data(d)
tasklist = d.getVar('__BBTASKS', False) or []
bb.build.add_tasks(tasklist, d)
bb.parse.siggen.finalise(fn, d, variant)
d.setVar('BBINCLUDED', bb.parse.get_file_depends(d))
bb.event.fire(bb.event.RecipeParsed(fn), d)
def _create_variants(datastores, names, function, onlyfinalise):
def create_variant(name, orig_d, arg = None):
if onlyfinalise and name not in onlyfinalise:
return
new_d = bb.data.createCopy(orig_d)
function(arg or name, new_d)
datastores[name] = new_d
for variant, variant_d in datastores.items():
for name in names:
if not variant:
# Based on main recipe
create_variant(name, variant_d)
else:
create_variant("%s-%s" % (variant, name), variant_d, name)
def _expand_versions(versions):
def expand_one(version, start, end):
for i in xrange(start, end + 1):
ver = _bbversions_re.sub(str(i), version, 1)
yield ver
versions = iter(versions)
while True:
try:
version = next(versions)
except StopIteration:
break
range_ver = _bbversions_re.search(version)
if not range_ver:
yield version
else:
newversions = expand_one(version, int(range_ver.group("from")),
int(range_ver.group("to")))
versions = itertools.chain(newversions, versions)
def multi_finalize(fn, d):
appends = (d.getVar("__BBAPPEND", True) or "").split()
for append in appends:
logger.debug(1, "Appending .bbappend file %s to %s", append, fn)
bb.parse.BBHandler.handle(append, d, True)
onlyfinalise = d.getVar("__ONLYFINALISE", False)
safe_d = d
d = bb.data.createCopy(safe_d)
try:
finalize(fn, d)
except bb.parse.SkipRecipe as e:
d.setVar("__SKIPPED", e.args[0])
datastores = {"": safe_d}
versions = (d.getVar("BBVERSIONS", True) or "").split()
if versions:
pv = orig_pv = d.getVar("PV", True)
baseversions = {}
def verfunc(ver, d, pv_d = None):
if pv_d is None:
pv_d = d
overrides = d.getVar("OVERRIDES", True).split(":")
pv_d.setVar("PV", ver)
overrides.append(ver)
bpv = baseversions.get(ver) or orig_pv
pv_d.setVar("BPV", bpv)
overrides.append(bpv)
d.setVar("OVERRIDES", ":".join(overrides))
versions = list(_expand_versions(versions))
for pos, version in enumerate(list(versions)):
try:
pv, bpv = version.split(":", 2)
except ValueError:
pass
else:
versions[pos] = pv
baseversions[pv] = bpv
if pv in versions and not baseversions.get(pv):
versions.remove(pv)
else:
pv = versions.pop()
# This is necessary because our existing main datastore
# has already been finalized with the old PV, we need one
# that's been finalized with the new PV.
d = bb.data.createCopy(safe_d)
verfunc(pv, d, safe_d)
try:
finalize(fn, d)
except bb.parse.SkipRecipe as e:
d.setVar("__SKIPPED", e.args[0])
_create_variants(datastores, versions, verfunc, onlyfinalise)
extended = d.getVar("BBCLASSEXTEND", True) or ""
if extended:
# the following is to support bbextends with arguments, for e.g. multilib
# an example is as follows:
# BBCLASSEXTEND = "multilib:lib32"
# it will create foo-lib32, inheriting multilib.bbclass and set
# BBEXTENDCURR to "multilib" and BBEXTENDVARIANT to "lib32"
extendedmap = {}
variantmap = {}
for ext in extended.split():
eext = ext.split(':', 2)
if len(eext) > 1:
extendedmap[ext] = eext[0]
variantmap[ext] = eext[1]
else:
extendedmap[ext] = ext
pn = d.getVar("PN", True)
def extendfunc(name, d):
if name != extendedmap[name]:
d.setVar("BBEXTENDCURR", extendedmap[name])
d.setVar("BBEXTENDVARIANT", variantmap[name])
else:
d.setVar("PN", "%s-%s" % (pn, name))
bb.parse.BBHandler.inherit(extendedmap[name], fn, 0, d)
safe_d.setVar("BBCLASSEXTEND", extended)
_create_variants(datastores, extendedmap.keys(), extendfunc, onlyfinalise)
for variant, variant_d in datastores.iteritems():
if variant:
try:
if not onlyfinalise or variant in onlyfinalise:
finalize(fn, variant_d, variant)
except bb.parse.SkipRecipe as e:
variant_d.setVar("__SKIPPED", e.args[0])
if len(datastores) > 1:
variants = filter(None, datastores.iterkeys())
safe_d.setVar("__VARIANTS", " ".join(variants))
datastores[""] = d
return datastores