313 lines
11 KiB
Python
313 lines
11 KiB
Python
# ex:ts=4:sw=4:sts=4:et
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# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
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"""
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AbstractSyntaxTree classes for the Bitbake language
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"""
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# Copyright (C) 2003, 2004 Chris Larson
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# Copyright (C) 2003, 2004 Phil Blundell
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# Copyright (C) 2009 Holger Hans Peter Freyther
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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import bb, re, string
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__word__ = re.compile(r"\S+")
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__parsed_methods__ = bb.methodpool.get_parsed_dict()
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class StatementGroup:
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def __init__(self):
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self.statements = []
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def append(self, statement):
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self.statements.append(statement)
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def eval(self, data):
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"""
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Apply each statement on the data... in order
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"""
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map(lambda x: x.eval(data), self.statements)
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def __getitem__(self, item):
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return self.statements.__getitem__(item)
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class IncludeNode:
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def __init__(self, what_file, fn, lineno, force):
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self.what_file = what_file
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self.from_fn = fn
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self.from_lineno = lineno
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self.force = force
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def eval(self, data):
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"""
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Include the file and evaluate the statements
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"""
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s = bb.data.expand(self.what_file, data)
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bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (self.from_fn, self.from_lineno, s))
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# TODO: Cache those includes...
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statements = StatementGroup()
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if force:
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bb.parse.ConfHandler.include(statements, self.from_fn, s, data, "include required")
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else:
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bb.parse.ConfHandler.include(statements, self.from_fn, s, data, False)
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#statements.eval(data)
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class ExportNode:
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def __init__(self, var):
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self.var = var
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def eval(self, data):
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bb.data.setVarFlag(self.var, "export", 1, data)
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class DataNode:
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"""
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Various data related updates. For the sake of sanity
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we have one class doing all this. This means that all
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this need to be re-evaluated... we might be able to do
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that faster with multiple classes.
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"""
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def __init__(self, groupd):
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self.groupd = groupd
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def getFunc(self, key, data):
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if 'flag' in self.groupd and self.groupd['flag'] != None:
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return bb.data.getVarFlag(key, self.groupd['flag'], data)
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else:
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return bb.data.getVar(key, data)
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def eval(self, data):
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groupd = self.groupd
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key = groupd["var"]
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if "exp" in groupd and groupd["exp"] != None:
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bb.data.setVarFlag(key, "export", 1, data)
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if "ques" in groupd and groupd["ques"] != None:
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val = self.getFunc(key, data)
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if val == None:
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val = groupd["value"]
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elif "colon" in groupd and groupd["colon"] != None:
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e = data.createCopy()
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bb.data.update_data(e)
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val = bb.data.expand(groupd["value"], e)
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elif "append" in groupd and groupd["append"] != None:
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val = "%s %s" % ((self.getFunc(key, data) or ""), groupd["value"])
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elif "prepend" in groupd and groupd["prepend"] != None:
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val = "%s %s" % (groupd["value"], (self.getFunc(key, data) or ""))
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elif "postdot" in groupd and groupd["postdot"] != None:
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val = "%s%s" % ((self.getFunc(key, data) or ""), groupd["value"])
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elif "predot" in groupd and groupd["predot"] != None:
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val = "%s%s" % (groupd["value"], (self.getFunc(key, data) or ""))
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else:
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val = groupd["value"]
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if 'flag' in groupd and groupd['flag'] != None:
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bb.msg.debug(3, bb.msg.domain.Parsing, "setVarFlag(%s, %s, %s, data)" % (key, groupd['flag'], val))
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bb.data.setVarFlag(key, groupd['flag'], val, data)
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else:
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bb.data.setVar(key, val, data)
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class MethodNode:
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def __init__(self, func_name, body, lineno, fn):
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self.func_name = func_name
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self.body = body
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self.fn = fn
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self.lineno = lineno
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def eval(self, data):
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if self.func_name == "__anonymous":
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funcname = ("__anon_%s_%s" % (self.lineno, self.fn.translate(string.maketrans('/.+-', '____'))))
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if not funcname in bb.methodpool._parsed_fns:
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text = "def %s(d):\n" % (funcname) + '\n'.join(self.body)
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bb.methodpool.insert_method(funcname, text, fn)
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anonfuncs = bb.data.getVar('__BBANONFUNCS', data) or []
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anonfuncs.append(funcname)
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bb.data.setVar('__BBANONFUNCS', anonfuncs, data)
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else:
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bb.data.setVarFlag(self.func_name, "func", 1, data)
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bb.data.setVar(self.func_name, '\n'.join(self.body), data)
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class PythonMethodNode:
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def __init__(self, root, body, fn):
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self.root = root
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self.body = body
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self.fn = fn
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def eval(self, data):
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# Note we will add root to parsedmethods after having parse
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# 'this' file. This means we will not parse methods from
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# bb classes twice
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if not self.root in __parsed_methods__:
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text = '\n'.join(self.body)
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bb.methodpool.insert_method(self.root, text, self.fn)
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def handleInclude(statements, m, fn, lineno, data, force):
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# AST handling
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statements.append(IncludeNode(m.group(1), fn, lineno, force))
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statements[-1].eval(data)
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def handleExport(statements, m, data):
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# AST handling
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statements.append(ExportNode(m.group(1)))
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statements[-1].eval(data)
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def handleData(statements, groupd, data):
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# AST handling
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statements.append(DataNode(groupd))
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statements[-1].eval(data)
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def handleMethod(statements, func_name, lineno, fn, body, d):
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# AST handling
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statements.append(MethodNode(func_name, body, lineno, fn))
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statements[-1].eval(d)
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def handlePythonMethod(statements, root, body, fn):
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# AST handling
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statements.append(PythonMethodNode(root, body, fn))
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statements[-1].eval(None)
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def handleMethodFlags(statements, key, m, d):
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if bb.data.getVar(key, d):
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# Clean up old version of this piece of metadata, as its
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# flags could cause problems
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bb.data.setVarFlag(key, 'python', None, d)
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bb.data.setVarFlag(key, 'fakeroot', None, d)
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if m.group("py") is not None:
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bb.data.setVarFlag(key, "python", "1", d)
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else:
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bb.data.delVarFlag(key, "python", d)
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if m.group("fr") is not None:
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bb.data.setVarFlag(key, "fakeroot", "1", d)
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else:
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bb.data.delVarFlag(key, "fakeroot", d)
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def handleExportFuncs(statements, m, classes, d):
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fns = m.group(1)
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n = __word__.findall(fns)
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for f in n:
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allvars = []
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allvars.append(f)
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allvars.append(classes[-1] + "_" + f)
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vars = [[ allvars[0], allvars[1] ]]
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if len(classes) > 1 and classes[-2] is not None:
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allvars.append(classes[-2] + "_" + f)
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vars = []
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vars.append([allvars[2], allvars[1]])
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vars.append([allvars[0], allvars[2]])
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for (var, calledvar) in vars:
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if bb.data.getVar(var, d) and not bb.data.getVarFlag(var, 'export_func', d):
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continue
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if bb.data.getVar(var, d):
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bb.data.setVarFlag(var, 'python', None, d)
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bb.data.setVarFlag(var, 'func', None, d)
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for flag in [ "func", "python" ]:
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if bb.data.getVarFlag(calledvar, flag, d):
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bb.data.setVarFlag(var, flag, bb.data.getVarFlag(calledvar, flag, d), d)
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for flag in [ "dirs" ]:
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if bb.data.getVarFlag(var, flag, d):
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bb.data.setVarFlag(calledvar, flag, bb.data.getVarFlag(var, flag, d), d)
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if bb.data.getVarFlag(calledvar, "python", d):
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bb.data.setVar(var, "\tbb.build.exec_func('" + calledvar + "', d)\n", d)
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else:
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bb.data.setVar(var, "\t" + calledvar + "\n", d)
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bb.data.setVarFlag(var, 'export_func', '1', d)
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def handleAddTask(statements, m, d):
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func = m.group("func")
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before = m.group("before")
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after = m.group("after")
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if func is None:
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return
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if func[:3] != "do_":
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var = "do_" + func
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bb.data.setVarFlag(var, "task", 1, d)
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bbtasks = bb.data.getVar('__BBTASKS', d) or []
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if not var in bbtasks:
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bbtasks.append(var)
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bb.data.setVar('__BBTASKS', bbtasks, d)
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existing = bb.data.getVarFlag(var, "deps", d) or []
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if after is not None:
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# set up deps for function
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for entry in after.split():
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if entry not in existing:
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existing.append(entry)
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bb.data.setVarFlag(var, "deps", existing, d)
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if before is not None:
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# set up things that depend on this func
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for entry in before.split():
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existing = bb.data.getVarFlag(entry, "deps", d) or []
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if var not in existing:
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bb.data.setVarFlag(entry, "deps", [var] + existing, d)
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def handleBBHandlers(statements, m, d):
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fns = m.group(1)
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hs = __word__.findall(fns)
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bbhands = bb.data.getVar('__BBHANDLERS', d) or []
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for h in hs:
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bbhands.append(h)
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bb.data.setVarFlag(h, "handler", 1, d)
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bb.data.setVar('__BBHANDLERS', bbhands, d)
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def handleInherit(statements, m, d):
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files = m.group(1)
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n = __word__.findall(files)
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bb.parse.BBHandler.inherit(statements, n, d)
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def finalise(fn, d):
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bb.data.expandKeys(d)
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bb.data.update_data(d)
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anonqueue = bb.data.getVar("__anonqueue", d, 1) or []
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body = [x['content'] for x in anonqueue]
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flag = { 'python' : 1, 'func' : 1 }
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bb.data.setVar("__anonfunc", "\n".join(body), d)
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bb.data.setVarFlags("__anonfunc", flag, d)
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from bb import build
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try:
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t = bb.data.getVar('T', d)
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bb.data.setVar('T', '${TMPDIR}/anonfunc/', d)
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anonfuncs = bb.data.getVar('__BBANONFUNCS', d) or []
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code = ""
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for f in anonfuncs:
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code = code + " %s(d)\n" % f
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bb.data.setVar("__anonfunc", code, d)
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build.exec_func("__anonfunc", d)
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bb.data.delVar('T', d)
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if t:
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bb.data.setVar('T', t, d)
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except Exception, e:
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bb.msg.debug(1, bb.msg.domain.Parsing, "Exception when executing anonymous function: %s" % e)
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raise
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bb.data.delVar("__anonqueue", d)
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bb.data.delVar("__anonfunc", d)
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bb.data.update_data(d)
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all_handlers = {}
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for var in bb.data.getVar('__BBHANDLERS', d) or []:
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# try to add the handler
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handler = bb.data.getVar(var,d)
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bb.event.register(var, handler)
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tasklist = bb.data.getVar('__BBTASKS', d) or []
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bb.build.add_tasks(tasklist, d)
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bb.event.fire(bb.event.RecipeParsed(fn), d)
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