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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.
import bb, re, string
__word__ = re.compile(r"\S+")
__parsed_methods__ = bb.methodpool.get_parsed_dict()
class StatementGroup:
def __init__(self):
self.statements = []
def append(self, statement):
self.statements.append(statement)
def eval(self, data):
"""
Apply each statement on the data... in order
"""
map(lambda x: x.eval(data), self.statements)
def __getitem__(self, item):
return self.statements.__getitem__(item)
class IncludeNode:
def __init__(self, what_file, fn, lineno, force):
self.what_file = what_file
self.from_fn = fn
self.from_lineno = lineno
self.force = force
def eval(self, data):
"""
Include the file and evaluate the statements
"""
s = bb.data.expand(self.what_file, data)
bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (self.from_fn, self.from_lineno, s))
# TODO: Cache those includes...
statements = StatementGroup()
if force:
bb.parse.ConfHandler.include(statements, self.from_fn, s, data, "include required")
else:
bb.parse.ConfHandler.include(statements, self.from_fn, s, data, False)
statements.eval(data)
class ExportNode:
def __init__(self, var):
self.var = var
def eval(self, data):
bb.data.setVarFlag(self.var, "export", 1, data)
class DataNode:
"""
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, groupd):
self.groupd = groupd
def getFunc(self, key, data):
if 'flag' in self.groupd and self.groupd['flag'] != None:
return bb.data.getVarFlag(key, self.groupd['flag'], data)
else:
return bb.data.getVar(key, data)
def eval(self, data):
groupd = self.groupd
key = groupd["var"]
if "exp" in groupd and groupd["exp"] != None:
bb.data.setVarFlag(key, "export", 1, data)
if "ques" in groupd and groupd["ques"] != None:
val = self.getFunc(key, data)
if val == None:
val = groupd["value"]
elif "colon" in groupd and groupd["colon"] != None:
e = data.createCopy()
bb.data.update_data(e)
val = bb.data.expand(groupd["value"], e)
elif "append" in groupd and groupd["append"] != None:
val = "%s %s" % ((self.getFunc(key, data) or ""), groupd["value"])
elif "prepend" in groupd and groupd["prepend"] != None:
val = "%s %s" % (groupd["value"], (self.getFunc(key, data) or ""))
elif "postdot" in groupd and groupd["postdot"] != None:
val = "%s%s" % ((self.getFunc(key, data) or ""), groupd["value"])
elif "predot" in groupd and groupd["predot"] != None:
val = "%s%s" % (groupd["value"], (self.getFunc(key, data) or ""))
else:
val = groupd["value"]
if 'flag' in groupd and groupd['flag'] != None:
bb.msg.debug(3, bb.msg.domain.Parsing, "setVarFlag(%s, %s, %s, data)" % (key, groupd['flag'], val))
bb.data.setVarFlag(key, groupd['flag'], val, data)
else:
bb.data.setVar(key, val, data)
def handleInclude(statements, m, fn, lineno, data, force):
# AST handling
statements.append(IncludeNode(m.group(1), fn, lineno, force))
s = bb.data.expand(m.group(1), data)
bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (fn, lineno, s))
if force:
bb.parse.ConfHandler.include(statements, fn, s, data, "include required")
else:
bb.parse.ConfHandler.include(statements, fn, s, data, False)
def handleExport(statements, m, data):
# AST handling
statements.append(ExportNode(m.group(1)))
statements[-1].eval(data)
def handleData(statements, groupd, data):
# AST handling
statements.append(DataNode(groupd))
statements[-1].eval(data)
def handleMethod(statements, func_name, lineno, fn, body, d):
if func_name == "__anonymous":
funcname = ("__anon_%s_%s" % (lineno, fn.translate(string.maketrans('/.+-', '____'))))
if not funcname in bb.methodpool._parsed_fns:
text = "def %s(d):\n" % (funcname) + '\n'.join(body)
bb.methodpool.insert_method(funcname, text, fn)
anonfuncs = bb.data.getVar('__BBANONFUNCS', d) or []
anonfuncs.append(funcname)
bb.data.setVar('__BBANONFUNCS', anonfuncs, d)
else:
bb.data.setVarFlag(func_name, "func", 1, d)
bb.data.setVar(func_name, '\n'.join(body), d)
def handlePythonMethod(statements, root, body, fn):
# Note we will add root to parsedmethods after having parse
# 'this' file. This means we will not parse methods from
# bb classes twice
if not root in __parsed_methods__:
text = '\n'.join(body)
bb.methodpool.insert_method(root, text, fn)
def handleMethodFlags(statements, key, m, d):
if bb.data.getVar(key, d):
# Clean up old version of this piece of metadata, as its
# flags could cause problems
bb.data.setVarFlag(key, 'python', None, d)
bb.data.setVarFlag(key, 'fakeroot', None, d)
if m.group("py") is not None:
bb.data.setVarFlag(key, "python", "1", d)
else:
bb.data.delVarFlag(key, "python", d)
if m.group("fr") is not None:
bb.data.setVarFlag(key, "fakeroot", "1", d)
else:
bb.data.delVarFlag(key, "fakeroot", d)
def handleExportFuncs(statements, m, classes, d):
fns = m.group(1)
n = __word__.findall(fns)
for f in n:
allvars = []
allvars.append(f)
allvars.append(classes[-1] + "_" + f)
vars = [[ allvars[0], allvars[1] ]]
if len(classes) > 1 and classes[-2] is not None:
allvars.append(classes[-2] + "_" + f)
vars = []
vars.append([allvars[2], allvars[1]])
vars.append([allvars[0], allvars[2]])
for (var, calledvar) in vars:
if bb.data.getVar(var, d) and not bb.data.getVarFlag(var, 'export_func', d):
continue
if bb.data.getVar(var, d):
bb.data.setVarFlag(var, 'python', None, d)
bb.data.setVarFlag(var, 'func', None, d)
for flag in [ "func", "python" ]:
if bb.data.getVarFlag(calledvar, flag, d):
bb.data.setVarFlag(var, flag, bb.data.getVarFlag(calledvar, flag, d), d)
for flag in [ "dirs" ]:
if bb.data.getVarFlag(var, flag, d):
bb.data.setVarFlag(calledvar, flag, bb.data.getVarFlag(var, flag, d), d)
if bb.data.getVarFlag(calledvar, "python", d):
bb.data.setVar(var, "\tbb.build.exec_func('" + calledvar + "', d)\n", d)
else:
bb.data.setVar(var, "\t" + calledvar + "\n", d)
bb.data.setVarFlag(var, 'export_func', '1', d)
def handleAddTask(statements, m, d):
func = m.group("func")
before = m.group("before")
after = m.group("after")
if func is None:
return
if func[:3] != "do_":
var = "do_" + func
bb.data.setVarFlag(var, "task", 1, d)
bbtasks = bb.data.getVar('__BBTASKS', d) or []
if not var in bbtasks:
bbtasks.append(var)
bb.data.setVar('__BBTASKS', bbtasks, d)
existing = bb.data.getVarFlag(var, "deps", d) or []
if after is not None:
# set up deps for function
for entry in after.split():
if entry not in existing:
existing.append(entry)
bb.data.setVarFlag(var, "deps", existing, d)
if before is not None:
# set up things that depend on this func
for entry in before.split():
existing = bb.data.getVarFlag(entry, "deps", d) or []
if var not in existing:
bb.data.setVarFlag(entry, "deps", [var] + existing, d)
def handleBBHandlers(statements, m, d):
fns = m.group(1)
hs = __word__.findall(fns)
bbhands = bb.data.getVar('__BBHANDLERS', d) or []
for h in hs:
bbhands.append(h)
bb.data.setVarFlag(h, "handler", 1, d)
bb.data.setVar('__BBHANDLERS', bbhands, d)
def handleInherit(statements, m, d):
files = m.group(1)
n = __word__.findall(files)
bb.parse.BBHandler.inherit(statements, n, d)
def finalise(fn, d):
bb.data.expandKeys(d)
bb.data.update_data(d)
anonqueue = bb.data.getVar("__anonqueue", d, 1) or []
body = [x['content'] for x in anonqueue]
flag = { 'python' : 1, 'func' : 1 }
bb.data.setVar("__anonfunc", "\n".join(body), d)
bb.data.setVarFlags("__anonfunc", flag, d)
from bb import build
try:
t = bb.data.getVar('T', d)
bb.data.setVar('T', '${TMPDIR}/anonfunc/', d)
anonfuncs = bb.data.getVar('__BBANONFUNCS', d) or []
code = ""
for f in anonfuncs:
code = code + " %s(d)\n" % f
bb.data.setVar("__anonfunc", code, d)
build.exec_func("__anonfunc", d)
bb.data.delVar('T', d)
if t:
bb.data.setVar('T', t, d)
except Exception, e:
bb.msg.debug(1, bb.msg.domain.Parsing, "Exception when executing anonymous function: %s" % e)
raise
bb.data.delVar("__anonqueue", d)
bb.data.delVar("__anonfunc", d)
bb.data.update_data(d)
all_handlers = {}
for var in bb.data.getVar('__BBHANDLERS', d) or []:
# try to add the handler
handler = bb.data.getVar(var,d)
bb.event.register(var, handler)
tasklist = bb.data.getVar('__BBTASKS', d) or []
bb.build.add_tasks(tasklist, d)
bb.event.fire(bb.event.RecipeParsed(fn), d)
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