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79834a7144
poky/bitbake/lib/bb/parse/ast.py
Richard Purdie 79834a7144 bitbake: bitbake: Add initial pass of SPDX license headers to source code 
This adds the SPDX-License-Identifier license headers to the majority of
our source files to make it clearer exactly which license files are under.

The bulk of the files are under GPL v2.0 with one found to be under V2.0
or later, some under MIT and some have dual license. There are some files
which are potentially harder to classify where we've imported upstream code
and those can be handled specifically in later commits.

The COPYING file is replaced with LICENSE.X files which contain the full
license texts.

(Bitbake rev: ff237c33337f4da2ca06c3a2c49699bc26608a6b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-05-04 10:44:04 +01:00

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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
#
# SPDX-License-Identifier: GPL-2.0-only
#
# 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 re
import string
import logging
import bb
import itertools
from bb import methodpool
from bb.parse import logger
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 UnsetNode(AstNode):
def __init__(self, filename, lineno, var):
AstNode.__init__(self, filename, lineno)
self.var = var
def eval(self, data):
loginfo = {
'variable': self.var,
'file': self.filename,
'line': self.lineno,
}
data.delVar(self.var,**loginfo)
class UnsetFlagNode(AstNode):
def __init__(self, filename, lineno, var, flag):
AstNode.__init__(self, filename, lineno)
self.var = var
self.flag = flag
def eval(self, data):
loginfo = {
'variable': self.var,
'file': self.filename,
'line': self.lineno,
}
data.delVarFlag(self.var, self.flag, **loginfo)
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()
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 = str.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) - 1)
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 handleUnset(statements, filename, lineno, m):
statements.append(UnsetNode(filename, lineno, m.group(1)))
def handleUnsetFlag(statements, filename, lineno, m):
statements.append(UnsetFlagNode(filename, lineno, m.group(1), m.group(2)))
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 runAnonFuncs(d):
code = []
for funcname in d.getVar("__BBANONFUNCS", False) or []:
code.append("%s(d)" % funcname)
bb.utils.better_exec("\n".join(code), {"d": d})
def finalize(fn, d, variant = None):
saved_handlers = bb.event.get_handlers().copy()
try:
for var in d.getVar('__BBHANDLERS', False) or []:
# try to add the handler
handlerfn = d.getVarFlag(var, "filename", False)
if not handlerfn:
bb.fatal("Undefined event handler function '%s'" % var)
handlerln = int(d.getVarFlag(var, "lineno", False))
bb.event.register(var, d.getVar(var, False), (d.getVarFlag(var, "eventmask") or "").split(), handlerfn, handlerln)
bb.event.fire(bb.event.RecipePreFinalise(fn), d)
bb.data.expandKeys(d)
runAnonFuncs(d)
tasklist = d.getVar('__BBTASKS', False) or []
bb.event.fire(bb.event.RecipeTaskPreProcess(fn, list(tasklist)), d)
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)
finally:
bb.event.set_handlers(saved_handlers)
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 in list(datastores.keys()):
for name in names:
if not variant:
# Based on main recipe
create_variant(name, datastores[""])
else:
create_variant("%s-%s" % (variant, name), datastores[variant], name)
def multi_finalize(fn, d):
appends = (d.getVar("__BBAPPEND") 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}
extended = d.getVar("BBCLASSEXTEND") 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")
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 in datastores.keys():
if variant:
try:
if not onlyfinalise or variant in onlyfinalise:
finalize(fn, datastores[variant], variant)
except bb.parse.SkipRecipe as e:
datastores[variant].setVar("__SKIPPED", e.args[0])
datastores[""] = d
return datastores
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