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git://git.yoctoproject.org/poky.git
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5226f46342
The recent addtask improvement to handle comments complicated the regex significantly and there are already a number of corner cases in that code which aren't handled well. Instead of trying to complicate the regex further, switch to code logic instead. This means the following cases are now handled: * addtask with multiple task names * addtask with multiple before constraints * addtask with multiple after constraints The testcase is updated to match the improvements. (Bitbake rev: 417016b83c21fca7616b2ee768d5d08e1edd1e06) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
297 lines
9.9 KiB
Python
297 lines
9.9 KiB
Python
"""
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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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# SPDX-License-Identifier: GPL-2.0-only
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#
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import re, bb, os
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import bb.build, bb.utils, bb.data_smart
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from . import ConfHandler
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from .. import resolve_file, ast, logger, ParseError
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from .ConfHandler import include, init
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__func_start_regexp__ = re.compile(r"(((?P<py>python(?=(\s|\()))|(?P<fr>fakeroot(?=\s)))\s*)*(?P<func>[\w\.\-\+\{\}\$:]+)?\s*\(\s*\)\s*{$" )
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__inherit_regexp__ = re.compile(r"inherit\s+(.+)" )
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__inherit_def_regexp__ = re.compile(r"inherit_defer\s+(.+)" )
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__export_func_regexp__ = re.compile(r"EXPORT_FUNCTIONS\s+(.+)" )
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__addtask_regexp__ = re.compile(r"addtask\s+([^#\n]+)(?P<comment>#.*|.*?)")
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__deltask_regexp__ = re.compile(r"deltask\s+([^#\n]+)(?P<comment>#.*|.*?)")
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__addhandler_regexp__ = re.compile(r"addhandler\s+(.+)" )
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__def_regexp__ = re.compile(r"def\s+(\w+).*:" )
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__python_func_regexp__ = re.compile(r"(\s+.*)|(^$)|(^#)" )
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__python_tab_regexp__ = re.compile(r" *\t")
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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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__residue__ = []
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cached_statements = {}
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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, deferred=False):
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__inherit_cache = d.getVar('__inherit_cache', False) or []
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#if "${" in files and not deferred:
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# bb.warn("%s:%s has non deferred conditional inherit" % (fn, lineno))
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files = d.expand(files).split()
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for file in files:
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classtype = d.getVar("__bbclasstype", False)
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origfile = file
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for t in ["classes-" + classtype, "classes"]:
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file = origfile
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if not os.path.isabs(file) and not file.endswith(".bbclass"):
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file = os.path.join(t, '%s.bbclass' % file)
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if not os.path.isabs(file):
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bbpath = d.getVar("BBPATH")
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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 os.path.exists(file):
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break
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if not os.path.exists(file):
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raise ParseError("Could not inherit file %s" % (file), fn, lineno)
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if not file in __inherit_cache:
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logger.debug("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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try:
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bb.parse.handle(file, d, True)
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except (IOError, OSError) as exc:
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raise ParseError("Could not inherit file %s: %s" % (fn, exc.strerror), fn, lineno)
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__inherit_cache = d.getVar('__inherit_cache', False) or []
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def get_statements(filename, absolute_filename, base_name):
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global cached_statements, __residue__, __body__
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try:
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return cached_statements[absolute_filename]
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except KeyError:
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with open(absolute_filename, 'r') as f:
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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 = f.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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if __inpython__:
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# add a blank line to close out any python definition
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feeder(lineno, "", filename, base_name, statements, eof=True)
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if __residue__:
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raise ParseError("Unparsed lines %s: %s" % (filename, str(__residue__)), filename, lineno)
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if __body__:
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raise ParseError("Unparsed lines from unclosed function %s: %s" % (filename, str(__body__)), filename, lineno)
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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, baseconfig=False):
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global __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', False) 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', False)
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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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# 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" and abs_fn != oldfile:
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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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d.setVar("__SKIPPED", True)
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if include == 0:
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return { "" : d }
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if __infunc__:
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raise ParseError("Shell function %s is never closed" % __infunc__[0], __infunc__[1], __infunc__[2])
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if __residue__:
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raise ParseError("Leftover unparsed (incomplete?) data %s from %s" % __residue__, fn)
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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 ext != ".bbclass" and oldfile and abs_fn != 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, eof=False):
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global __inpython__, __infunc__, __body__, __residue__, __classname__
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# Check tabs in python functions:
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# - def py_funcname(): covered by __inpython__
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# - python(): covered by '__anonymous' == __infunc__[0]
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# - python funcname(): covered by __infunc__[3]
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if __inpython__ or (__infunc__ and ('__anonymous' == __infunc__[0] or __infunc__[3])):
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tab = __python_tab_regexp__.match(s)
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if tab:
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bb.warn('python should use 4 spaces indentation, but found tabs in %s, line %s' % (root, lineno))
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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__[0], __body__, __infunc__[3], __infunc__[4])
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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 not 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 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:\n'''\n%s\n'''\nwhich is in the middle of a multiline expression. This syntax is invalid, please correct it." % (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:\n%s\nPlease clarify whether this is all a comment or should be parsed." % (lineno - len(__residue__), fn, "\n".join(__residue__)))
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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", fn, lineno, m.group("py") is not None, m.group("fr") is not None]
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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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after = ""
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before = ""
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# This code splits on 'before' and 'after' instead of on whitespace so we can defer
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# evaluation to as late as possible.
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tasks = m.group(1).split(" before ")[0].split(" after ")[0]
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for exp in m.group(1).split(" before "):
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exp2 = exp.split(" after ")
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if len(exp2) > 1:
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after = after + " ".join(exp2[1:])
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for exp in m.group(1).split(" after "):
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exp2 = exp.split(" before ")
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if len(exp2) > 1:
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before = before + " ".join(exp2[1:])
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# Check and warn for having task with a keyword as part of task name
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taskexpression = s.split()
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for te in taskexpression:
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if any( ( "%s_" % keyword ) in te for keyword in bb.data_smart.__setvar_keyword__ ):
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raise ParseError("Task name '%s' contains a keyword which is not recommended/supported.\nPlease rename the task not to include the keyword.\n%s" % (te, ("\n".join(map(str, bb.data_smart.__setvar_keyword__)))), fn)
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if tasks is not None:
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ast.handleAddTask(statements, fn, lineno, tasks, before, after)
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return
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m = __deltask_regexp__.match(s)
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if m:
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task = m.group(1)
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if task is not None:
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ast.handleDelTask(statements, fn, lineno, task)
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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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m = __inherit_def_regexp__.match(s)
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if m:
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ast.handleInheritDeferred(statements, fn, lineno, m)
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return
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return ConfHandler.feeder(lineno, s, fn, statements, conffile=False)
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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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