# 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)