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91a164cb87
In the depths of time we were rather confused about naming. bb files are recipes, the event to skip parsing them should be SkipRecipe, not SkipPackage. This changes bitbake to use the better name but leaves the other around for now. We can therefore start removing references to it from the metadata. (Bitbake rev: 98d9e6e0f514a7cb7da1d99bf4bd5602b89426d6) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
262 lines
8.3 KiB
Python
262 lines
8.3 KiB
Python
#!/usr/bin/env python
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# 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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class for handling .bb files
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Reads a .bb file and obtains its metadata
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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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#
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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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from __future__ import absolute_import
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import re, bb, os
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import logging
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import bb.build, bb.utils
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from bb import data
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from . import ConfHandler
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from .. import resolve_file, ast, logger
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from .ConfHandler import include, init
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# For compatibility
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bb.deprecate_import(__name__, "bb.parse", ["vars_from_file"])
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__func_start_regexp__ = re.compile( r"(((?P<py>python)|(?P<fr>fakeroot))\s*)*(?P<func>[\w\.\-\+\{\}\$]+)?\s*\(\s*\)\s*{$" )
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__inherit_regexp__ = re.compile( r"inherit\s+(.+)" )
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__export_func_regexp__ = re.compile( r"EXPORT_FUNCTIONS\s+(.+)" )
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__addtask_regexp__ = re.compile("addtask\s+(?P<func>\w+)\s*((before\s*(?P<before>((.*(?=after))|(.*))))|(after\s*(?P<after>((.*(?=before))|(.*)))))*")
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__deltask_regexp__ = re.compile("deltask\s+(?P<func>\w+)")
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__addhandler_regexp__ = re.compile( r"addhandler\s+(.+)" )
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__def_regexp__ = re.compile( r"def\s+(\w+).*:" )
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__python_func_regexp__ = re.compile( r"(\s+.*)|(^$)" )
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__infunc__ = ""
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__inpython__ = False
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__body__ = []
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__classname__ = ""
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cached_statements = {}
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# We need to indicate EOF to the feeder. This code is so messy that
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# factoring it out to a close_parse_file method is out of question.
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# We will use the IN_PYTHON_EOF as an indicator to just close the method
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#
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# The two parts using it are tightly integrated anyway
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IN_PYTHON_EOF = -9999999999999
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def supports(fn, d):
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"""Return True if fn has a supported extension"""
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return os.path.splitext(fn)[-1] in [".bb", ".bbclass", ".inc"]
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def inherit(files, fn, lineno, d):
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__inherit_cache = d.getVar('__inherit_cache') or []
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files = d.expand(files).split()
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for file in files:
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if not os.path.isabs(file) and not file.endswith(".bbclass"):
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file = os.path.join('classes', '%s.bbclass' % file)
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if not os.path.isabs(file):
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dname = os.path.dirname(fn)
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bbpath = "%s:%s" % (dname, d.getVar("BBPATH", True))
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abs_fn, attempts = bb.utils.which(bbpath, file, history=True)
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for af in attempts:
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if af != abs_fn:
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bb.parse.mark_dependency(d, af)
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if abs_fn:
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file = abs_fn
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if not file in __inherit_cache:
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logger.debug(1, "Inheriting %s (from %s:%d)" % (file, fn, lineno))
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__inherit_cache.append( file )
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d.setVar('__inherit_cache', __inherit_cache)
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include(fn, file, lineno, d, "inherit")
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__inherit_cache = d.getVar('__inherit_cache') or []
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def get_statements(filename, absolute_filename, base_name):
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global cached_statements
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try:
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return cached_statements[absolute_filename]
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except KeyError:
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file = open(absolute_filename, 'r')
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statements = ast.StatementGroup()
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lineno = 0
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while True:
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lineno = lineno + 1
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s = file.readline()
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if not s: break
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s = s.rstrip()
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feeder(lineno, s, filename, base_name, statements)
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file.close()
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if __inpython__:
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# add a blank line to close out any python definition
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feeder(IN_PYTHON_EOF, "", filename, base_name, statements)
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if filename.endswith(".bbclass") or filename.endswith(".inc"):
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cached_statements[absolute_filename] = statements
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return statements
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def handle(fn, d, include):
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global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __infunc__, __body__, __residue__, __classname__
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__body__ = []
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__infunc__ = ""
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__classname__ = ""
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__residue__ = []
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base_name = os.path.basename(fn)
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(root, ext) = os.path.splitext(base_name)
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init(d)
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if ext == ".bbclass":
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__classname__ = root
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__inherit_cache = d.getVar('__inherit_cache') or []
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if not fn in __inherit_cache:
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__inherit_cache.append(fn)
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d.setVar('__inherit_cache', __inherit_cache)
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if include != 0:
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oldfile = d.getVar('FILE')
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else:
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oldfile = None
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abs_fn = resolve_file(fn, d)
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if include:
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bb.parse.mark_dependency(d, abs_fn)
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# actual loading
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statements = get_statements(fn, abs_fn, base_name)
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# DONE WITH PARSING... time to evaluate
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if ext != ".bbclass":
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d.setVar('FILE', abs_fn)
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try:
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statements.eval(d)
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except bb.parse.SkipRecipe:
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bb.data.setVar("__SKIPPED", True, d)
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if include == 0:
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return { "" : d }
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if ext != ".bbclass" and include == 0:
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return ast.multi_finalize(fn, d)
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if oldfile:
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d.setVar("FILE", oldfile)
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return d
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def feeder(lineno, s, fn, root, statements):
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global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __def_regexp__, __python_func_regexp__, __inpython__, __infunc__, __body__, bb, __residue__, __classname__
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if __infunc__:
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if s == '}':
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__body__.append('')
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ast.handleMethod(statements, fn, lineno, __infunc__, __body__)
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__infunc__ = ""
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__body__ = []
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else:
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__body__.append(s)
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return
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if __inpython__:
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m = __python_func_regexp__.match(s)
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if m and lineno != IN_PYTHON_EOF:
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__body__.append(s)
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return
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else:
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ast.handlePythonMethod(statements, fn, lineno, __inpython__,
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root, __body__)
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__body__ = []
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__inpython__ = False
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if lineno == IN_PYTHON_EOF:
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return
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if s and s[0] == '#':
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if len(__residue__) != 0 and __residue__[0][0] != "#":
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bb.fatal("There is a comment on line %s of file %s (%s) which is in the middle of a multiline expression.\nBitbake used to ignore these but no longer does so, please fix your metadata as errors are likely as a result of this change." % (lineno, fn, s))
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if len(__residue__) != 0 and __residue__[0][0] == "#" and (not s or s[0] != "#"):
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bb.fatal("There is a confusing multiline, partially commented expression on line %s of file %s (%s).\nPlease clarify whether this is all a comment or should be parsed." % (lineno, fn, s))
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if s and s[-1] == '\\':
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__residue__.append(s[:-1])
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return
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s = "".join(__residue__) + s
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__residue__ = []
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# Skip empty lines
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if s == '':
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return
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# Skip comments
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if s[0] == '#':
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return
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m = __func_start_regexp__.match(s)
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if m:
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__infunc__ = m.group("func") or "__anonymous"
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ast.handleMethodFlags(statements, fn, lineno, __infunc__, m)
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return
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m = __def_regexp__.match(s)
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if m:
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__body__.append(s)
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__inpython__ = m.group(1)
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return
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m = __export_func_regexp__.match(s)
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if m:
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ast.handleExportFuncs(statements, fn, lineno, m, __classname__)
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return
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m = __addtask_regexp__.match(s)
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if m:
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ast.handleAddTask(statements, fn, lineno, m)
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return
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m = __deltask_regexp__.match(s)
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if m:
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ast.handleDelTask(statements, fn, lineno, m)
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return
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m = __addhandler_regexp__.match(s)
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if m:
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ast.handleBBHandlers(statements, fn, lineno, m)
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return
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m = __inherit_regexp__.match(s)
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if m:
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ast.handleInherit(statements, fn, lineno, m)
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return
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return ConfHandler.feeder(lineno, s, fn, statements)
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# Add us to the handlers list
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from .. import handlers
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handlers.append({'supports': supports, 'handle': handle, 'init': init})
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del handlers
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