|
@@ -1,3541 +0,0 @@
|
|
|
-# This is Kconfiglib, a Python library for scripting, debugging, and extracting
|
|
|
-# information from Kconfig-based configuration systems. To view the
|
|
|
-# documentation, run
|
|
|
-#
|
|
|
-# $ pydoc kconfiglib
|
|
|
-#
|
|
|
-# or, if you prefer HTML,
|
|
|
-#
|
|
|
-# $ pydoc -w kconfiglib
|
|
|
-#
|
|
|
-# The examples/ subdirectory contains examples, to be run with e.g.
|
|
|
-#
|
|
|
-# $ make scriptconfig SCRIPT=Kconfiglib/examples/print_tree.py
|
|
|
-#
|
|
|
-# Look in testsuite.py for the test suite.
|
|
|
-
|
|
|
-"""
|
|
|
-Kconfiglib is a Python library for scripting and extracting information from
|
|
|
-Kconfig-based configuration systems. Features include the following:
|
|
|
-
|
|
|
- - Symbol values and properties can be looked up and values assigned
|
|
|
- programmatically.
|
|
|
- - .config files can be read and written.
|
|
|
- - Expressions can be evaluated in the context of a Kconfig configuration.
|
|
|
- - Relations between symbols can be quickly determined, such as finding all
|
|
|
- symbols that reference a particular symbol.
|
|
|
- - Highly compatible with the scripts/kconfig/*conf utilities. The test suite
|
|
|
- automatically compares outputs between Kconfiglib and the C implementation
|
|
|
- for a large number of cases.
|
|
|
-
|
|
|
-For the Linux kernel, scripts are run using
|
|
|
-
|
|
|
- $ make scriptconfig [ARCH=<architecture>] SCRIPT=<path to script> [SCRIPT_ARG=<arg>]
|
|
|
-
|
|
|
-Using the 'scriptconfig' target ensures that required environment variables
|
|
|
-(SRCARCH, ARCH, srctree, KERNELVERSION, etc.) are set up correctly.
|
|
|
-
|
|
|
-Scripts receive the name of the Kconfig file to load in sys.argv[1]. As of
|
|
|
-Linux 4.1.0-rc5, this is always "Kconfig" from the kernel top-level directory.
|
|
|
-If an argument is provided with SCRIPT_ARG, it appears as sys.argv[2].
|
|
|
-
|
|
|
-To get an interactive Python prompt with Kconfiglib preloaded and a Config
|
|
|
-object 'c' created, run
|
|
|
-
|
|
|
- $ make iscriptconfig [ARCH=<architecture>]
|
|
|
-
|
|
|
-Kconfiglib currently uses Python 2. For (i)scriptconfig, the Python interpreter
|
|
|
-to use can be passed in PYTHONCMD. It defaults to 'python', but PyPy works too
|
|
|
-and might be faster for long-running jobs.
|
|
|
-
|
|
|
-The examples/ directory contains short example scripts, which can be run with
|
|
|
-e.g.
|
|
|
-
|
|
|
- $ make scriptconfig SCRIPT=Kconfiglib/examples/print_tree.py
|
|
|
-
|
|
|
-or
|
|
|
-
|
|
|
- $ make scriptconfig SCRIPT=Kconfiglib/examples/help_grep.py SCRIPT_ARG=kernel
|
|
|
-
|
|
|
-testsuite.py contains the test suite. See the top of the script for how to run
|
|
|
-it.
|
|
|
-
|
|
|
-Credits: Written by Ulf "Ulfalizer" Magnusson
|
|
|
-
|
|
|
-Send bug reports, suggestions and other feedback to ulfalizer a.t Google's
|
|
|
-email service. Don't wrestle with internal APIs. Tell me what you need and I
|
|
|
-might add it in a safe way as a client API instead."""
|
|
|
-
|
|
|
-import os
|
|
|
-import re
|
|
|
-import sys
|
|
|
-
|
|
|
-# File layout:
|
|
|
-#
|
|
|
-# Public classes
|
|
|
-# Public functions
|
|
|
-# Internal classes
|
|
|
-# Internal functions
|
|
|
-# Internal global constants
|
|
|
-
|
|
|
-#
|
|
|
-# Public classes
|
|
|
-#
|
|
|
-
|
|
|
-class Config(object):
|
|
|
-
|
|
|
- """Represents a Kconfig configuration, e.g. for i386 or ARM. This is the
|
|
|
- set of symbols and other items appearing in the configuration together with
|
|
|
- their values. Creating any number of Config objects -- including for
|
|
|
- different architectures -- is safe; Kconfiglib has no global state."""
|
|
|
-
|
|
|
- #
|
|
|
- # Public interface
|
|
|
- #
|
|
|
-
|
|
|
- def __init__(self, filename = "Kconfig", base_dir = None,
|
|
|
- print_warnings = True, print_undef_assign = False):
|
|
|
- """Creates a new Config object, representing a Kconfig configuration.
|
|
|
- Raises Kconfig_Syntax_Error on syntax errors.
|
|
|
-
|
|
|
- filename (default: "Kconfig") -- The base Kconfig file of the
|
|
|
- configuration. For the Linux kernel, you'll probably want
|
|
|
- "Kconfig" from the top-level directory, as environment
|
|
|
- variables will make sure the right Kconfig is included from
|
|
|
- there (arch/<architecture>/Kconfig). If you are using
|
|
|
- kconfiglib via 'make scriptconfig', the filename of the base
|
|
|
- base Kconfig file will be in sys.argv[1].
|
|
|
-
|
|
|
- base_dir (default: None) -- The base directory relative to which
|
|
|
- 'source' statements within Kconfig files will work. For the
|
|
|
- Linux kernel this should be the top-level directory of the
|
|
|
- kernel tree. $-references to existing environment variables
|
|
|
- will be expanded.
|
|
|
-
|
|
|
- If None (the default), the environment variable 'srctree' will
|
|
|
- be used if set, and the current directory otherwise. 'srctree'
|
|
|
- is set by the Linux makefiles to the top-level kernel
|
|
|
- directory. A default of "." would not work with an alternative
|
|
|
- build directory.
|
|
|
-
|
|
|
- print_warnings (default: True) -- Set to True if warnings related to
|
|
|
- this configuration should be printed to stderr. This can
|
|
|
- be changed later with Config.set_print_warnings(). It is
|
|
|
- provided as a constructor argument since warnings might
|
|
|
- be generated during parsing.
|
|
|
-
|
|
|
- print_undef_assign (default: False) -- Set to True if informational
|
|
|
- messages related to assignments to undefined symbols
|
|
|
- should be printed to stderr for this configuration.
|
|
|
- Can be changed later with
|
|
|
- Config.set_print_undef_assign()."""
|
|
|
-
|
|
|
- # The set of all symbols, indexed by name (a string)
|
|
|
- self.syms = {}
|
|
|
-
|
|
|
- # Python 2/3 compatibility hack. This is the only one needed.
|
|
|
- if sys.version_info[0] >= 3:
|
|
|
- self.syms_iter = self.syms.values
|
|
|
- else:
|
|
|
- self.syms_iter = self.syms.itervalues
|
|
|
-
|
|
|
- # The set of all defined symbols in the configuration in the order they
|
|
|
- # appear in the Kconfig files. This excludes the special symbols n, m,
|
|
|
- # and y as well as symbols that are referenced but never defined.
|
|
|
- self.kconfig_syms = []
|
|
|
-
|
|
|
- # The set of all named choices (yes, choices can have names), indexed
|
|
|
- # by name (a string)
|
|
|
- self.named_choices = {}
|
|
|
-
|
|
|
- def register_special_symbol(type_, name, val):
|
|
|
- sym = Symbol()
|
|
|
- sym.is_special_ = True
|
|
|
- sym.is_defined_ = True
|
|
|
- sym.config = self
|
|
|
- sym.name = name
|
|
|
- sym.type = type_
|
|
|
- sym.cached_val = val
|
|
|
- self.syms[name] = sym
|
|
|
- return sym
|
|
|
-
|
|
|
- # The special symbols n, m and y, used as shorthand for "n", "m" and
|
|
|
- # "y"
|
|
|
- self.n = register_special_symbol(TRISTATE, "n", "n")
|
|
|
- self.m = register_special_symbol(TRISTATE, "m", "m")
|
|
|
- self.y = register_special_symbol(TRISTATE, "y", "y")
|
|
|
-
|
|
|
- # DEFCONFIG_LIST uses this
|
|
|
- register_special_symbol(STRING, "UNAME_RELEASE", os.uname()[2])
|
|
|
-
|
|
|
- # The symbol with "option defconfig_list" set, containing a list of
|
|
|
- # default .config files
|
|
|
- self.defconfig_sym = None
|
|
|
-
|
|
|
- # See Symbol.get_(src)arch()
|
|
|
- self.arch = os.environ.get("ARCH")
|
|
|
- self.srcarch = os.environ.get("SRCARCH")
|
|
|
-
|
|
|
- # See Config.__init__(). We need this for get_defconfig_filename().
|
|
|
- self.srctree = os.environ.get("srctree")
|
|
|
- if self.srctree is None:
|
|
|
- self.srctree = "."
|
|
|
-
|
|
|
- self.filename = filename
|
|
|
- if base_dir is None:
|
|
|
- self.base_dir = self.srctree
|
|
|
- else:
|
|
|
- self.base_dir = os.path.expandvars(base_dir)
|
|
|
-
|
|
|
- # The 'mainmenu' text
|
|
|
- self.mainmenu_text = None
|
|
|
-
|
|
|
- # The filename of the most recently loaded .config file
|
|
|
- self.config_filename = None
|
|
|
-
|
|
|
- # The textual header of the most recently loaded .config, uncommented
|
|
|
- self.config_header = None
|
|
|
-
|
|
|
- self.print_warnings = print_warnings
|
|
|
- self.print_undef_assign = print_undef_assign
|
|
|
-
|
|
|
- # Lists containing all choices, menus and comments in the configuration
|
|
|
-
|
|
|
- self.choices = []
|
|
|
- self.menus = []
|
|
|
- self.comments = []
|
|
|
-
|
|
|
- # For parsing routines that stop when finding a line belonging to a
|
|
|
- # different construct, these holds that line and the tokenized version
|
|
|
- # of that line. The purpose is to avoid having to re-tokenize the line,
|
|
|
- # which is inefficient and causes problems when recording references to
|
|
|
- # symbols.
|
|
|
- self.end_line = None
|
|
|
- self.end_line_tokens = None
|
|
|
-
|
|
|
- # See the comment in _parse_expr().
|
|
|
- self.parse_expr_cur_sym_or_choice = None
|
|
|
- self.parse_expr_line = None
|
|
|
- self.parse_expr_filename = None
|
|
|
- self.parse_expr_linenr = None
|
|
|
- self.parse_expr_transform_m = None
|
|
|
-
|
|
|
- # Parse the Kconfig files
|
|
|
- self.top_block = self._parse_file(filename, None, None, None)
|
|
|
-
|
|
|
- # Build Symbol.dep for all symbols
|
|
|
- self._build_dep()
|
|
|
-
|
|
|
- def load_config(self, filename, replace = True):
|
|
|
- """Loads symbol values from a file in the familiar .config format.
|
|
|
- Equivalent to calling Symbol.set_user_value() to set each of the
|
|
|
- values.
|
|
|
-
|
|
|
- "# CONFIG_FOO is not set" within a .config file is treated specially
|
|
|
- and sets the user value of FOO to 'n'. The C implementation works
|
|
|
- the same way.
|
|
|
-
|
|
|
- filename -- The .config file to load. $-references to environment
|
|
|
- variables will be expanded. For scripts to work even
|
|
|
- when an alternative build directory is used with the
|
|
|
- Linux kernel, you need to refer to the top-level kernel
|
|
|
- directory with "$srctree".
|
|
|
-
|
|
|
- replace (default: True) -- True if the configuration should replace
|
|
|
- the old configuration; False if it should add to it."""
|
|
|
-
|
|
|
- # Put this first so that a missing file doesn't screw up our state
|
|
|
- filename = os.path.expandvars(filename)
|
|
|
- line_feeder = _FileFeed(filename)
|
|
|
-
|
|
|
- self.config_filename = filename
|
|
|
-
|
|
|
- #
|
|
|
- # Read header
|
|
|
- #
|
|
|
-
|
|
|
- def is_header_line(line):
|
|
|
- return line is not None and line.startswith("#") and \
|
|
|
- not _unset_re_match(line)
|
|
|
-
|
|
|
- self.config_header = None
|
|
|
-
|
|
|
- line = line_feeder.peek_next()
|
|
|
- if is_header_line(line):
|
|
|
- self.config_header = ""
|
|
|
- while is_header_line(line_feeder.peek_next()):
|
|
|
- self.config_header += line_feeder.get_next()[1:]
|
|
|
- # Remove trailing newline
|
|
|
- if self.config_header.endswith("\n"):
|
|
|
- self.config_header = self.config_header[:-1]
|
|
|
-
|
|
|
- #
|
|
|
- # Read assignments. Hotspot for some workloads.
|
|
|
- #
|
|
|
-
|
|
|
- def warn_override(filename, linenr, name, old_user_val, new_user_val):
|
|
|
- self._warn('overriding the value of {0}. '
|
|
|
- 'Old value: "{1}", new value: "{2}".'
|
|
|
- .format(name, old_user_val, new_user_val),
|
|
|
- filename, linenr)
|
|
|
-
|
|
|
- # Invalidate everything to keep things simple. It might be possible to
|
|
|
- # improve performance for the case where multiple configurations are
|
|
|
- # loaded by only invalidating a symbol (and its dependent symbols) if
|
|
|
- # the new user value differs from the old. One complication would be
|
|
|
- # that symbols not mentioned in the .config must lose their user value
|
|
|
- # when replace = True, which is the usual case.
|
|
|
- if replace:
|
|
|
- self.unset_user_values()
|
|
|
- else:
|
|
|
- self._invalidate_all()
|
|
|
-
|
|
|
- while 1:
|
|
|
- line = line_feeder.get_next()
|
|
|
- if line is None:
|
|
|
- return
|
|
|
-
|
|
|
- line = line.rstrip()
|
|
|
-
|
|
|
- set_match = _set_re_match(line)
|
|
|
- if set_match:
|
|
|
- name, val = set_match.groups()
|
|
|
-
|
|
|
- if val.startswith(('"', "'")):
|
|
|
- if len(val) < 2 or val[-1] != val[0]:
|
|
|
- _parse_error(line, "malformed string literal",
|
|
|
- line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr())
|
|
|
- # Strip quotes and remove escapings. The unescaping
|
|
|
- # producedure should be safe since " can only appear as \"
|
|
|
- # inside the string.
|
|
|
- val = val[1:-1].replace('\\"', '"').replace("\\\\", "\\")
|
|
|
-
|
|
|
- if name in self.syms:
|
|
|
- sym = self.syms[name]
|
|
|
- if sym.user_val is not None:
|
|
|
- warn_override(line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr(),
|
|
|
- name, sym.user_val, val)
|
|
|
-
|
|
|
- if sym.is_choice_symbol_:
|
|
|
- user_mode = sym.parent.user_mode
|
|
|
- if user_mode is not None and user_mode != val:
|
|
|
- self._warn("assignment to {0} changes mode of containing "
|
|
|
- 'choice from "{1}" to "{2}".'
|
|
|
- .format(name, val, user_mode),
|
|
|
- line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr())
|
|
|
-
|
|
|
- sym._set_user_value_no_invalidate(val, True)
|
|
|
- else:
|
|
|
- if self.print_undef_assign:
|
|
|
- _stderr_msg('note: attempt to assign the value "{0}" to the '
|
|
|
- "undefined symbol {1}.".format(val, name),
|
|
|
- line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr())
|
|
|
- else:
|
|
|
- unset_match = _unset_re_match(line)
|
|
|
- if unset_match:
|
|
|
- name = unset_match.group(1)
|
|
|
- if name in self.syms:
|
|
|
- sym = self.syms[name]
|
|
|
- if sym.user_val is not None:
|
|
|
- warn_override(line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr(),
|
|
|
- name, sym.user_val, "n")
|
|
|
-
|
|
|
- sym._set_user_value_no_invalidate("n", True)
|
|
|
-
|
|
|
- def write_config(self, filename, header = None):
|
|
|
- """Writes out symbol values in the familiar .config format.
|
|
|
-
|
|
|
- Kconfiglib makes sure the format matches what the C implementation
|
|
|
- would generate, down to whitespace. This eases testing.
|
|
|
-
|
|
|
- filename -- The filename under which to save the configuration.
|
|
|
-
|
|
|
- header (default: None) -- A textual header that will appear at the
|
|
|
- beginning of the file, with each line commented out
|
|
|
- automatically. None means no header."""
|
|
|
-
|
|
|
- # already_written is set when _make_conf() is called on a symbol, so
|
|
|
- # that symbols defined in multiple locations only get one entry in the
|
|
|
- # .config. We need to reset it prior to writing out a new .config.
|
|
|
- for sym in self.syms_iter():
|
|
|
- sym.already_written = False
|
|
|
-
|
|
|
- with open(filename, "w") as f:
|
|
|
- # Write header
|
|
|
- if header is not None:
|
|
|
- f.write(_comment(header))
|
|
|
- f.write("\n")
|
|
|
-
|
|
|
- # Write configuration.
|
|
|
-
|
|
|
- # Passing a list around to all the nodes and appending to it to
|
|
|
- # avoid copying was surprisingly a lot slower with PyPy, and about
|
|
|
- # as fast with Python. Passing the file around was slower too. Been
|
|
|
- # a while since I last measured though.
|
|
|
-
|
|
|
- f.write("\n".join(_make_block_conf(self.top_block)))
|
|
|
- f.write("\n")
|
|
|
-
|
|
|
- def get_kconfig_filename(self):
|
|
|
- """Returns the name of the (base) kconfig file this configuration was
|
|
|
- loaded from."""
|
|
|
- return self.filename
|
|
|
-
|
|
|
- def get_arch(self):
|
|
|
- """Returns the value the environment variable ARCH had at the time the
|
|
|
- Config instance was created, or None if ARCH was not set. For the
|
|
|
- kernel, this corresponds to the architecture being built for, with
|
|
|
- values such as "i386" or "mips"."""
|
|
|
- return self.arch
|
|
|
-
|
|
|
- def get_srcarch(self):
|
|
|
- """Returns the value the environment variable SRCARCH had at the time
|
|
|
- the Config instance was created, or None if SRCARCH was not set. For
|
|
|
- the kernel, this corresponds to the particular arch/ subdirectory
|
|
|
- containing architecture-specific code."""
|
|
|
- return self.srcarch
|
|
|
-
|
|
|
- def get_srctree(self):
|
|
|
- """Returns the value the environment variable srctree had at the time
|
|
|
- the Config instance was created, or None if srctree was not defined.
|
|
|
- This variable points to the source directory and is used when building
|
|
|
- in a separate directory."""
|
|
|
- return self.srctree
|
|
|
-
|
|
|
- def get_config_filename(self):
|
|
|
- """Returns the filename of the most recently loaded configuration file,
|
|
|
- or None if no configuration has been loaded."""
|
|
|
- return self.config_filename
|
|
|
-
|
|
|
- def get_mainmenu_text(self):
|
|
|
- """Returns the text of the 'mainmenu' statement (with $-references to
|
|
|
- symbols replaced by symbol values), or None if the configuration has no
|
|
|
- 'mainmenu' statement."""
|
|
|
- return None if self.mainmenu_text is None else \
|
|
|
- self._expand_sym_refs(self.mainmenu_text)
|
|
|
-
|
|
|
- def get_defconfig_filename(self):
|
|
|
- """Returns the name of the defconfig file, which is the first existing
|
|
|
- file in the list given in a symbol having 'option defconfig_list' set.
|
|
|
- $-references to symbols will be expanded ("$FOO bar" -> "foo bar" if
|
|
|
- FOO has the value "foo"). Returns None in case of no defconfig file.
|
|
|
- Setting 'option defconfig_list' on multiple symbols currently results
|
|
|
- in undefined behavior.
|
|
|
-
|
|
|
- If the environment variable 'srctree' was set when the Config was
|
|
|
- created, get_defconfig_filename() will first look relative to that
|
|
|
- directory before looking in the current directory; see
|
|
|
- Config.__init__().
|
|
|
-
|
|
|
- WARNING: A wart here is that scripts/kconfig/Makefile sometimes uses the
|
|
|
- --defconfig=<defconfig> option when calling the C implementation of e.g.
|
|
|
- 'make defconfig'. This option overrides the 'option defconfig_list'
|
|
|
- symbol, meaning the result from get_defconfig_filename() might not
|
|
|
- match what 'make defconfig' would use. That probably ought to be worked
|
|
|
- around somehow, so that this function always gives the "expected"
|
|
|
- result."""
|
|
|
- if self.defconfig_sym is None:
|
|
|
- return None
|
|
|
- for filename, cond_expr in self.defconfig_sym.def_exprs:
|
|
|
- if self._eval_expr(cond_expr) == "y":
|
|
|
- filename = self._expand_sym_refs(filename)
|
|
|
- # We first look in $srctree. os.path.join() won't work here as
|
|
|
- # an absolute path in filename would override $srctree.
|
|
|
- srctree_filename = os.path.normpath(self.srctree + "/" + filename)
|
|
|
- if os.path.exists(srctree_filename):
|
|
|
- return srctree_filename
|
|
|
- if os.path.exists(filename):
|
|
|
- return filename
|
|
|
- return None
|
|
|
-
|
|
|
- def get_symbol(self, name):
|
|
|
- """Returns the symbol with name 'name', or None if no such symbol
|
|
|
- appears in the configuration. An alternative shorthand is conf[name],
|
|
|
- where conf is a Config instance, though that will instead raise
|
|
|
- KeyError if the symbol does not exist."""
|
|
|
- return self.syms.get(name)
|
|
|
-
|
|
|
- def get_top_level_items(self):
|
|
|
- """Returns a list containing the items (symbols, menus, choice
|
|
|
- statements and comments) at the top level of the configuration -- that
|
|
|
- is, all items that do not appear within a menu or choice. The items
|
|
|
- appear in the same order as within the configuration."""
|
|
|
- return self.top_block
|
|
|
-
|
|
|
- def get_symbols(self, all_symbols = True):
|
|
|
- """Returns a list of symbols from the configuration. An alternative for
|
|
|
- iterating over all defined symbols (in the order of definition) is
|
|
|
-
|
|
|
- for sym in config:
|
|
|
- ...
|
|
|
-
|
|
|
- which relies on Config implementing __iter__() and is equivalent to
|
|
|
-
|
|
|
- for sym in config.get_symbols(False):
|
|
|
- ...
|
|
|
-
|
|
|
- all_symbols (default: True) -- If True, all symbols -- including special
|
|
|
- and undefined symbols -- will be included in the result, in
|
|
|
- an undefined order. If False, only symbols actually defined
|
|
|
- and not merely referred to in the configuration will be
|
|
|
- included in the result, and will appear in the order that
|
|
|
- they are defined within the Kconfig configuration files."""
|
|
|
- return self.syms.values() if all_symbols else self.kconfig_syms
|
|
|
-
|
|
|
- def get_choices(self):
|
|
|
- """Returns a list containing all choice statements in the
|
|
|
- configuration, in the order they appear in the Kconfig files."""
|
|
|
- return self.choices
|
|
|
-
|
|
|
- def get_menus(self):
|
|
|
- """Returns a list containing all menus in the configuration, in the
|
|
|
- order they appear in the Kconfig files."""
|
|
|
- return self.menus
|
|
|
-
|
|
|
- def get_comments(self):
|
|
|
- """Returns a list containing all comments in the configuration, in the
|
|
|
- order they appear in the Kconfig files."""
|
|
|
- return self.comments
|
|
|
-
|
|
|
- def eval(self, s):
|
|
|
- """Returns the value of the expression 's' -- where 's' is represented
|
|
|
- as a string -- in the context of the configuration. Raises
|
|
|
- Kconfig_Syntax_Error if syntax errors are detected in 's'.
|
|
|
-
|
|
|
- For example, if FOO and BAR are tristate symbols at least one of which
|
|
|
- has the value "y", then config.eval("y && (FOO || BAR)") => "y"
|
|
|
-
|
|
|
- This function always yields a tristate value. To get the value of
|
|
|
- non-bool, non-tristate symbols, use Symbol.get_value().
|
|
|
-
|
|
|
- The result of this function is consistent with how evaluation works for
|
|
|
- conditional expressions in the configuration as well as in the C
|
|
|
- implementation. "m" and m are rewritten as '"m" && MODULES' and 'm &&
|
|
|
- MODULES', respectively, and a result of "m" will get promoted to "y" if
|
|
|
- we're running without modules.
|
|
|
-
|
|
|
- Syntax checking is somewhat lax, partly to be compatible with lax
|
|
|
- parsing in the C implementation."""
|
|
|
- return self._eval_expr(self._parse_expr(self._tokenize(s, True), # Feed
|
|
|
- None, # Current symbol or choice
|
|
|
- s)) # line
|
|
|
-
|
|
|
- def get_config_header(self):
|
|
|
- """Returns the (uncommented) textual header of the .config file most
|
|
|
- recently loaded with load_config(). Returns None if no .config file has
|
|
|
- been loaded or if the most recently loaded .config file has no header.
|
|
|
- The header comprises all lines up to but not including the first line
|
|
|
- that either
|
|
|
-
|
|
|
- 1. Does not start with "#"
|
|
|
- 2. Has the form "# CONFIG_FOO is not set."
|
|
|
- """
|
|
|
- return self.config_header
|
|
|
-
|
|
|
- def get_base_dir(self):
|
|
|
- """Returns the base directory relative to which 'source' statements
|
|
|
- will work, passed as an argument to Config.__init__()."""
|
|
|
- return self.base_dir
|
|
|
-
|
|
|
- def set_print_warnings(self, print_warnings):
|
|
|
- """Determines whether warnings related to this configuration (for
|
|
|
- things like attempting to assign illegal values to symbols with
|
|
|
- Symbol.set_user_value()) should be printed to stderr.
|
|
|
-
|
|
|
- print_warnings -- True if warnings should be printed."""
|
|
|
- self.print_warnings = print_warnings
|
|
|
-
|
|
|
- def set_print_undef_assign(self, print_undef_assign):
|
|
|
- """Determines whether informational messages related to assignments to
|
|
|
- undefined symbols should be printed to stderr for this configuration.
|
|
|
-
|
|
|
- print_undef_assign -- If True, such messages will be printed."""
|
|
|
- self.print_undef_assign = print_undef_assign
|
|
|
-
|
|
|
- def __getitem__(self, key):
|
|
|
- """Returns the symbol with name 'name'. Raises KeyError if the symbol
|
|
|
- does not appear in the configuration."""
|
|
|
- return self.syms[key]
|
|
|
-
|
|
|
- def __iter__(self):
|
|
|
- """Convenience function for iterating over the set of all defined
|
|
|
- symbols in the configuration, used like
|
|
|
-
|
|
|
- for sym in conf:
|
|
|
- ...
|
|
|
-
|
|
|
- The iteration happens in the order of definition within the Kconfig
|
|
|
- configuration files. Symbols only referred to but not defined will not
|
|
|
- be included, nor will the special symbols n, m, and y. If you want to
|
|
|
- include such symbols as well, see config.get_symbols()."""
|
|
|
- return iter(self.kconfig_syms)
|
|
|
-
|
|
|
- def unset_user_values(self):
|
|
|
- """Resets the values of all symbols, as if Config.load_config() or
|
|
|
- Symbol.set_user_value() had never been called."""
|
|
|
- for sym in self.syms_iter():
|
|
|
- sym._unset_user_value_no_recursive_invalidate()
|
|
|
-
|
|
|
- def __str__(self):
|
|
|
- """Returns a string containing various information about the Config."""
|
|
|
- return _sep_lines("Configuration",
|
|
|
- "File : " + self.filename,
|
|
|
- "Base directory : " + self.base_dir,
|
|
|
- "Value of $ARCH at creation time : " +
|
|
|
- ("(not set)" if self.arch is None else self.arch),
|
|
|
- "Value of $SRCARCH at creation time : " +
|
|
|
- ("(not set)" if self.srcarch is None else self.srcarch),
|
|
|
- "Source tree (derived from $srctree;",
|
|
|
- "defaults to '.' if $srctree isn't set) : " + self.srctree,
|
|
|
- "Most recently loaded .config : " +
|
|
|
- ("(no .config loaded)" if self.config_filename is None else
|
|
|
- self.config_filename),
|
|
|
- "Print warnings : " +
|
|
|
- bool_str[self.print_warnings],
|
|
|
- "Print assignments to undefined symbols : " +
|
|
|
- bool_str[self.print_undef_assign])
|
|
|
-
|
|
|
- #
|
|
|
- # Private methods
|
|
|
- #
|
|
|
-
|
|
|
- def _invalidate_all(self):
|
|
|
- for sym in self.syms_iter():
|
|
|
- sym._invalidate()
|
|
|
-
|
|
|
- def _tokenize(self, s, for_eval = False, filename = None, linenr = None):
|
|
|
- """Returns a _Feed instance containing tokens derived from the string
|
|
|
- 's'. Registers any new symbols encountered (via _sym_lookup()).
|
|
|
-
|
|
|
- (I experimented with a pure regular expression implementation, but it
|
|
|
- came out slower, less readable, and wouldn't have been as flexible.)
|
|
|
-
|
|
|
- for_eval -- True when parsing an expression for a call to
|
|
|
- Config.eval(), in which case we should not treat the first
|
|
|
- token specially nor register new symbols."""
|
|
|
-
|
|
|
- # lstrip() would work here too, but removing the '\n' at the end leads
|
|
|
- # to earlier termination in the 'while' loop below, saving lots of
|
|
|
- # calls
|
|
|
- s = s.strip()
|
|
|
- if s == "" or s[0] == "#":
|
|
|
- return _Feed([])
|
|
|
-
|
|
|
- if for_eval:
|
|
|
- i = 0 # The current index in the string being tokenized
|
|
|
- previous = None # The previous token seen
|
|
|
- tokens = []
|
|
|
- else:
|
|
|
- # The initial word on a line is parsed specially. Let
|
|
|
- # command_chars = [A-Za-z0-9_]. Then
|
|
|
- # - leading non-command_chars characters on the line are ignored, and
|
|
|
- # - the first token consists the following one or more command_chars
|
|
|
- # characters.
|
|
|
- # This is why things like "----help--" are accepted.
|
|
|
-
|
|
|
- initial_token_match = _initial_token_re_match(s)
|
|
|
- if initial_token_match is None:
|
|
|
- return _Feed([])
|
|
|
- # The current index in the string being tokenized
|
|
|
- i = initial_token_match.end()
|
|
|
-
|
|
|
- keyword = _get_keyword(initial_token_match.group(1))
|
|
|
- if keyword is None:
|
|
|
- # We expect a keyword as the first token
|
|
|
- _tokenization_error(s, filename, linenr)
|
|
|
- if keyword == T_HELP:
|
|
|
- # Avoid junk after "help", e.g. "---", being registered as a
|
|
|
- # symbol
|
|
|
- return _Feed([T_HELP])
|
|
|
- tokens = [keyword]
|
|
|
- previous = keyword
|
|
|
-
|
|
|
- # _tokenize() is a hotspot during parsing, and this speeds things up a
|
|
|
- # bit
|
|
|
- strlen = len(s)
|
|
|
- append = tokens.append
|
|
|
-
|
|
|
- # Main tokenization loop. (Handles tokens past the first one.)
|
|
|
- while i < strlen:
|
|
|
- # Test for an identifier/keyword preceded by whitespace first; this
|
|
|
- # is the most common case.
|
|
|
- id_keyword_match = _id_keyword_re_match(s, i)
|
|
|
- if id_keyword_match:
|
|
|
- # We have an identifier or keyword. The above also stripped any
|
|
|
- # whitespace for us.
|
|
|
- name = id_keyword_match.group(1)
|
|
|
- # Jump past it
|
|
|
- i = id_keyword_match.end()
|
|
|
-
|
|
|
- # Keyword?
|
|
|
- keyword = _get_keyword(name)
|
|
|
- if keyword is not None:
|
|
|
- append(keyword)
|
|
|
- # What would ordinarily be considered a name is treated as a
|
|
|
- # string after certain tokens.
|
|
|
- elif previous in string_lex:
|
|
|
- append(name)
|
|
|
- else:
|
|
|
- # We're dealing with a symbol. _sym_lookup() will take care
|
|
|
- # of allocating a new Symbol instance if it's the first
|
|
|
- # time we see it.
|
|
|
- sym = self._sym_lookup(name, not for_eval)
|
|
|
-
|
|
|
- if previous == T_CONFIG or previous == T_MENUCONFIG:
|
|
|
- # If the previous token is T_(MENU)CONFIG
|
|
|
- # ("(menu)config"), we're tokenizing the first line of
|
|
|
- # a symbol definition, and should remember this as a
|
|
|
- # location where the symbol is defined.
|
|
|
- sym.def_locations.append((filename, linenr))
|
|
|
- else:
|
|
|
- # Otherwise, it's a reference to the symbol
|
|
|
- sym.ref_locations.append((filename, linenr))
|
|
|
-
|
|
|
- append(sym)
|
|
|
-
|
|
|
- else:
|
|
|
- # This restrips whitespace that could have been stripped in the
|
|
|
- # regex above, but it's worth it since identifiers/keywords are
|
|
|
- # more common
|
|
|
- s = s[i:].lstrip()
|
|
|
- if s == "":
|
|
|
- break
|
|
|
- c = s[0]
|
|
|
- i = 1
|
|
|
-
|
|
|
- # String literal (constant symbol)
|
|
|
- if c == '"' or c == "'":
|
|
|
- if "\\" in s:
|
|
|
- # Slow path: This could probably be sped up, but it's a
|
|
|
- # very unusual case anyway.
|
|
|
- quote = c
|
|
|
- val = ""
|
|
|
- while 1:
|
|
|
- if i >= len(s):
|
|
|
- _tokenization_error(s, filename, linenr)
|
|
|
- c = s[i]
|
|
|
- if c == quote:
|
|
|
- break
|
|
|
- if c == "\\":
|
|
|
- if i + 1 >= len(s):
|
|
|
- _tokenization_error(s, filename, linenr)
|
|
|
- val += s[i + 1]
|
|
|
- i += 2
|
|
|
- else:
|
|
|
- val += c
|
|
|
- i += 1
|
|
|
- i += 1
|
|
|
- append(val)
|
|
|
- else:
|
|
|
- # Fast path: If the string contains no backslashes (almost
|
|
|
- # always) we can simply look for the matching quote.
|
|
|
- end = s.find(c, i)
|
|
|
- if end == -1:
|
|
|
- _tokenization_error(s, filename, linenr)
|
|
|
- append(s[i:end])
|
|
|
- i = end + 1
|
|
|
-
|
|
|
- elif c == "&":
|
|
|
- # Invalid characters are ignored
|
|
|
- if i >= len(s) or s[i] != "&": continue
|
|
|
- append(T_AND)
|
|
|
- i += 1
|
|
|
-
|
|
|
- elif c == "|":
|
|
|
- # Invalid characters are ignored
|
|
|
- if i >= len(s) or s[i] != "|": continue
|
|
|
- append(T_OR)
|
|
|
- i += 1
|
|
|
-
|
|
|
- elif c == "!":
|
|
|
- if i < len(s) and s[i] == "=":
|
|
|
- append(T_UNEQUAL)
|
|
|
- i += 1
|
|
|
- else:
|
|
|
- append(T_NOT)
|
|
|
-
|
|
|
- elif c == "=": append(T_EQUAL)
|
|
|
- elif c == "(": append(T_OPEN_PAREN)
|
|
|
- elif c == ")": append(T_CLOSE_PAREN)
|
|
|
- elif c == "#": break # Comment
|
|
|
-
|
|
|
- else: continue # Invalid characters are ignored
|
|
|
-
|
|
|
- previous = tokens[-1]
|
|
|
-
|
|
|
- return _Feed(tokens)
|
|
|
-
|
|
|
- #
|
|
|
- # Parsing
|
|
|
- #
|
|
|
-
|
|
|
- # Expression grammar:
|
|
|
- #
|
|
|
- # <expr> -> <symbol>
|
|
|
- # <symbol> '=' <symbol>
|
|
|
- # <symbol> '!=' <symbol>
|
|
|
- # '(' <expr> ')'
|
|
|
- # '!' <expr>
|
|
|
- # <expr> '&&' <expr>
|
|
|
- # <expr> '||' <expr>
|
|
|
-
|
|
|
- def _parse_expr(self, feed, cur_sym_or_choice, line, filename = None,
|
|
|
- linenr = None, transform_m = True):
|
|
|
- """Parse an expression from the tokens in 'feed' using a simple
|
|
|
- top-down approach. The result has the form (<operator>, <list
|
|
|
- containing parsed operands>).
|
|
|
-
|
|
|
- feed -- _Feed instance containing the tokens for the expression.
|
|
|
-
|
|
|
- cur_sym_or_choice -- The symbol or choice currently being parsed, or
|
|
|
- None if we're not parsing a symbol or choice.
|
|
|
- Used for recording references to symbols.
|
|
|
-
|
|
|
- line -- The line containing the expression being parsed.
|
|
|
-
|
|
|
- filename (default: None) -- The file containing the expression.
|
|
|
-
|
|
|
- linenr (default: None) -- The line number containing the expression.
|
|
|
-
|
|
|
- transform_m (default: False) -- Determines if 'm' should be rewritten to
|
|
|
- 'm && MODULES' -- see
|
|
|
- parse_val_and_cond()."""
|
|
|
-
|
|
|
- # Use instance variables to avoid having to pass these as arguments
|
|
|
- # through the top-down parser in _parse_expr_2(), which is tedious and
|
|
|
- # obfuscates the code. A profiler run shows no noticeable performance
|
|
|
- # difference.
|
|
|
- self.parse_expr_cur_sym_or_choice = cur_sym_or_choice
|
|
|
- self.parse_expr_line = line
|
|
|
- self.parse_expr_filename = filename
|
|
|
- self.parse_expr_linenr = linenr
|
|
|
- self.parse_expr_transform_m = transform_m
|
|
|
-
|
|
|
- return self._parse_expr_2(feed)
|
|
|
-
|
|
|
- def _parse_expr_2(self, feed):
|
|
|
- or_terms = [self._parse_or_term(feed)]
|
|
|
- # Keep parsing additional terms while the lookahead is '||'
|
|
|
- while feed.check(T_OR):
|
|
|
- or_terms.append(self._parse_or_term(feed))
|
|
|
- return or_terms[0] if len(or_terms) == 1 else (OR, or_terms)
|
|
|
-
|
|
|
- def _parse_or_term(self, feed):
|
|
|
- and_terms = [self._parse_factor(feed)]
|
|
|
- # Keep parsing additional terms while the lookahead is '&&'
|
|
|
- while feed.check(T_AND):
|
|
|
- and_terms.append(self._parse_factor(feed))
|
|
|
- return and_terms[0] if len(and_terms) == 1 else (AND, and_terms)
|
|
|
-
|
|
|
- def _parse_factor(self, feed):
|
|
|
- if feed.check(T_OPEN_PAREN):
|
|
|
- expr_parse = self._parse_expr_2(feed)
|
|
|
-
|
|
|
- if not feed.check(T_CLOSE_PAREN):
|
|
|
- _parse_error(self.parse_expr_line,
|
|
|
- "missing end parenthesis.",
|
|
|
- self.parse_expr_filename,
|
|
|
- self.parse_expr_linenr)
|
|
|
-
|
|
|
- return expr_parse
|
|
|
-
|
|
|
- if feed.check(T_NOT):
|
|
|
- return (NOT, self._parse_factor(feed))
|
|
|
-
|
|
|
- sym_or_string = feed.get_next()
|
|
|
-
|
|
|
- if not isinstance(sym_or_string, (Symbol, str)):
|
|
|
- _parse_error(self.parse_expr_line,
|
|
|
- "malformed expression.",
|
|
|
- self.parse_expr_filename,
|
|
|
- self.parse_expr_linenr)
|
|
|
-
|
|
|
- if self.parse_expr_cur_sym_or_choice is not None and \
|
|
|
- isinstance(sym_or_string, Symbol):
|
|
|
- self.parse_expr_cur_sym_or_choice.referenced_syms.add(sym_or_string)
|
|
|
-
|
|
|
- next_token = feed.peek_next()
|
|
|
-
|
|
|
- # For conditional expressions ('depends on <expr>', '... if <expr>',
|
|
|
- # etc.), "m" and m are rewritten to "m" && MODULES.
|
|
|
- if next_token != T_EQUAL and next_token != T_UNEQUAL:
|
|
|
- if self.parse_expr_transform_m and (sym_or_string is self.m or
|
|
|
- sym_or_string == "m"):
|
|
|
- return (AND, ["m", self._sym_lookup("MODULES")])
|
|
|
- return sym_or_string
|
|
|
-
|
|
|
- relation = EQUAL if (feed.get_next() == T_EQUAL) else UNEQUAL
|
|
|
- sym_or_string_2 = feed.get_next()
|
|
|
-
|
|
|
- if self.parse_expr_cur_sym_or_choice is not None and \
|
|
|
- isinstance(sym_or_string_2, Symbol):
|
|
|
- self.parse_expr_cur_sym_or_choice.referenced_syms.add(sym_or_string_2)
|
|
|
-
|
|
|
- if sym_or_string is self.m:
|
|
|
- sym_or_string = "m"
|
|
|
- if sym_or_string_2 is self.m:
|
|
|
- sym_or_string_2 = "m"
|
|
|
-
|
|
|
- return (relation, sym_or_string, sym_or_string_2)
|
|
|
-
|
|
|
- def _parse_file(self, filename, parent, deps, visible_if_deps, res = None):
|
|
|
- """Parses the Kconfig file 'filename'. Returns a list with the Items in
|
|
|
- the file. See _parse_block() for the meaning of the parameters."""
|
|
|
- return self._parse_block(_FileFeed(filename), None, parent, deps,
|
|
|
- visible_if_deps, res)
|
|
|
-
|
|
|
- def _parse_block(self, line_feeder, end_marker, parent, deps,
|
|
|
- visible_if_deps = None, res = None):
|
|
|
- """Parses a block, which is the contents of either a file or an if,
|
|
|
- menu, or choice statement. Returns a list with the Items in the block.
|
|
|
-
|
|
|
- end_marker -- The token that ends the block, e.g. T_ENDIF ("endif") for
|
|
|
- if's. None for files.
|
|
|
-
|
|
|
- parent -- The enclosing menu, choice or if, or None if we're at the top
|
|
|
- level.
|
|
|
-
|
|
|
- deps -- Dependencies from enclosing menus, choices and if's.
|
|
|
-
|
|
|
- visible_if_deps (default: None) -- 'visible if' dependencies from
|
|
|
- enclosing menus.
|
|
|
-
|
|
|
- res (default: None) -- The list to add items to. If None, a new list is
|
|
|
- created to hold the items."""
|
|
|
-
|
|
|
- block = [] if res is None else res
|
|
|
-
|
|
|
- while 1:
|
|
|
- # Do we already have a tokenized line that we determined wasn't
|
|
|
- # part of whatever we were parsing earlier? See comment in
|
|
|
- # Config.__init__().
|
|
|
- if self.end_line is not None:
|
|
|
- line = self.end_line
|
|
|
- tokens = self.end_line_tokens
|
|
|
- tokens.go_to_start()
|
|
|
-
|
|
|
- self.end_line = None
|
|
|
- self.end_line_tokens = None
|
|
|
- else:
|
|
|
- line = line_feeder.get_next()
|
|
|
- if line is None:
|
|
|
- if end_marker is not None:
|
|
|
- raise Kconfig_Syntax_Error(
|
|
|
- "Unexpected end of file {0}."
|
|
|
- .format(line_feeder.get_filename()))
|
|
|
- return block
|
|
|
-
|
|
|
- tokens = self._tokenize(line, False,
|
|
|
- line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr())
|
|
|
-
|
|
|
- t0 = tokens.get_next()
|
|
|
- if t0 is None:
|
|
|
- continue
|
|
|
-
|
|
|
- # Cases are ordered roughly by frequency, which speeds things up a
|
|
|
- # bit
|
|
|
-
|
|
|
- if t0 == T_CONFIG or t0 == T_MENUCONFIG:
|
|
|
- # The tokenizer will automatically allocate a new Symbol object
|
|
|
- # for any new names it encounters, so we don't need to worry
|
|
|
- # about that here.
|
|
|
- sym = tokens.get_next()
|
|
|
-
|
|
|
- # Symbols defined in multiple places get the parent of their
|
|
|
- # first definition. However, for symbols whose parents are choice
|
|
|
- # statements, the choice statement takes precedence.
|
|
|
- if not sym.is_defined_ or isinstance(parent, Choice):
|
|
|
- sym.parent = parent
|
|
|
-
|
|
|
- sym.is_defined_ = True
|
|
|
-
|
|
|
- self.kconfig_syms.append(sym)
|
|
|
- block.append(sym)
|
|
|
-
|
|
|
- self._parse_properties(line_feeder, sym, deps, visible_if_deps)
|
|
|
-
|
|
|
- elif t0 == T_SOURCE:
|
|
|
- kconfig_file = tokens.get_next()
|
|
|
- exp_kconfig_file = self._expand_sym_refs(kconfig_file)
|
|
|
- f = os.path.join(self.base_dir, exp_kconfig_file)
|
|
|
-
|
|
|
- if not os.path.exists(f):
|
|
|
- raise IOError('{0}:{1}: sourced file "{2}" (expands to '
|
|
|
- '"{3}") not found. Perhaps base_dir '
|
|
|
- '(argument to Config.__init__(), currently '
|
|
|
- '"{4}") is set to the wrong value.'
|
|
|
- .format(line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr(),
|
|
|
- kconfig_file, exp_kconfig_file,
|
|
|
- self.base_dir))
|
|
|
-
|
|
|
- # Add items to the same block
|
|
|
- self._parse_file(f, parent, deps, visible_if_deps, block)
|
|
|
-
|
|
|
- elif t0 == end_marker:
|
|
|
- # We have reached the end of the block
|
|
|
- return block
|
|
|
-
|
|
|
- elif t0 == T_IF:
|
|
|
- # If statements are treated as syntactic sugar for adding
|
|
|
- # dependencies to enclosed items and do not have an explicit
|
|
|
- # object representation.
|
|
|
-
|
|
|
- dep_expr = self._parse_expr(tokens, None, line,
|
|
|
- line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr())
|
|
|
- self._parse_block(line_feeder,
|
|
|
- T_ENDIF,
|
|
|
- parent,
|
|
|
- _make_and(dep_expr, deps),
|
|
|
- visible_if_deps,
|
|
|
- block) # Add items to the same block
|
|
|
-
|
|
|
- elif t0 == T_COMMENT:
|
|
|
- comment = Comment()
|
|
|
-
|
|
|
- comment.config = self
|
|
|
- comment.parent = parent
|
|
|
- comment.filename = line_feeder.get_filename()
|
|
|
- comment.linenr = line_feeder.get_linenr()
|
|
|
- comment.text = tokens.get_next()
|
|
|
-
|
|
|
- self.comments.append(comment)
|
|
|
- block.append(comment)
|
|
|
-
|
|
|
- self._parse_properties(line_feeder, comment, deps, visible_if_deps)
|
|
|
-
|
|
|
- elif t0 == T_MENU:
|
|
|
- menu = Menu()
|
|
|
-
|
|
|
- menu.config = self
|
|
|
- menu.parent = parent
|
|
|
- menu.filename = line_feeder.get_filename()
|
|
|
- menu.linenr = line_feeder.get_linenr()
|
|
|
- menu.title = tokens.get_next()
|
|
|
-
|
|
|
- self.menus.append(menu)
|
|
|
- block.append(menu)
|
|
|
-
|
|
|
- # Parse properties and contents
|
|
|
- self._parse_properties(line_feeder, menu, deps, visible_if_deps)
|
|
|
- menu.block = self._parse_block(line_feeder,
|
|
|
- T_ENDMENU,
|
|
|
- menu,
|
|
|
- menu.dep_expr,
|
|
|
- _make_and(visible_if_deps,
|
|
|
- menu.visible_if_expr))
|
|
|
-
|
|
|
- elif t0 == T_CHOICE:
|
|
|
- name = tokens.get_next()
|
|
|
- if name is None:
|
|
|
- choice = Choice()
|
|
|
- self.choices.append(choice)
|
|
|
- else:
|
|
|
- # Named choice
|
|
|
- choice = self.named_choices.get(name)
|
|
|
- if choice is None:
|
|
|
- choice = Choice()
|
|
|
- choice.name = name
|
|
|
- self.named_choices[name] = choice
|
|
|
- self.choices.append(choice)
|
|
|
-
|
|
|
- choice.config = self
|
|
|
- choice.parent = parent
|
|
|
-
|
|
|
- choice.def_locations.append((line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr()))
|
|
|
-
|
|
|
- # Parse properties and contents
|
|
|
- self._parse_properties(line_feeder, choice, deps, visible_if_deps)
|
|
|
- choice.block = self._parse_block(line_feeder,
|
|
|
- T_ENDCHOICE,
|
|
|
- choice,
|
|
|
- deps,
|
|
|
- visible_if_deps)
|
|
|
-
|
|
|
- choice._determine_actual_symbols()
|
|
|
-
|
|
|
- # If no type is set for the choice, its type is that of the first
|
|
|
- # choice item
|
|
|
- if choice.type == UNKNOWN:
|
|
|
- for item in choice.get_symbols():
|
|
|
- if item.type != UNKNOWN:
|
|
|
- choice.type = item.type
|
|
|
- break
|
|
|
-
|
|
|
- # Each choice item of UNKNOWN type gets the type of the choice
|
|
|
- for item in choice.get_symbols():
|
|
|
- if item.type == UNKNOWN:
|
|
|
- item.type = choice.type
|
|
|
-
|
|
|
- block.append(choice)
|
|
|
-
|
|
|
- elif t0 == T_MAINMENU:
|
|
|
- text = tokens.get_next()
|
|
|
-
|
|
|
- if self.mainmenu_text is not None:
|
|
|
- self._warn("overriding 'mainmenu' text. "
|
|
|
- 'Old value: "{0}", new value: "{1}".'
|
|
|
- .format(self.mainmenu_text, text),
|
|
|
- line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr())
|
|
|
-
|
|
|
- self.mainmenu_text = text
|
|
|
-
|
|
|
- else:
|
|
|
- _parse_error(line, "unrecognized construct.",
|
|
|
- line_feeder.get_filename(),
|
|
|
- line_feeder.get_linenr())
|
|
|
-
|
|
|
- def _parse_properties(self, line_feeder, stmt, deps, visible_if_deps):
|
|
|
- """Parsing of properties for symbols, menus, choices, and comments."""
|
|
|
-
|
|
|
- def parse_val_and_cond(tokens, line, filename, linenr):
|
|
|
- """Parses '<expr1> if <expr2>' constructs, where the 'if' part is
|
|
|
- optional. Returns a tuple containing the parsed expressions, with
|
|
|
- None as the second element if the 'if' part is missing."""
|
|
|
- val = self._parse_expr(tokens, stmt, line, filename, linenr, False)
|
|
|
- if tokens.check(T_IF):
|
|
|
- return (val, self._parse_expr(tokens, stmt, line, filename, linenr))
|
|
|
- return (val, None)
|
|
|
-
|
|
|
- # In case the symbol is defined in multiple locations, we need to
|
|
|
- # remember what prompts, defaults, and selects are new for this
|
|
|
- # definition, as "depends on" should only apply to the local
|
|
|
- # definition.
|
|
|
- new_prompt = None
|
|
|
- new_def_exprs = []
|
|
|
- new_selects = []
|
|
|
-
|
|
|
- # Dependencies from 'depends on' statements
|
|
|
- depends_on_expr = None
|
|
|
-
|
|
|
- while 1:
|
|
|
- line = line_feeder.get_next()
|
|
|
- if line is None:
|
|
|
- break
|
|
|
-
|
|
|
- filename = line_feeder.get_filename()
|
|
|
- linenr = line_feeder.get_linenr()
|
|
|
-
|
|
|
- tokens = self._tokenize(line, False, filename, linenr)
|
|
|
-
|
|
|
- t0 = tokens.get_next()
|
|
|
- if t0 is None:
|
|
|
- continue
|
|
|
-
|
|
|
- # Cases are ordered roughly by frequency, which speeds things up a
|
|
|
- # bit
|
|
|
-
|
|
|
- if t0 == T_DEPENDS:
|
|
|
- if not tokens.check(T_ON):
|
|
|
- _parse_error(line, 'expected "on" after "depends".', filename, linenr)
|
|
|
-
|
|
|
- parsed_deps = self._parse_expr(tokens, stmt, line, filename, linenr)
|
|
|
-
|
|
|
- if isinstance(stmt, (Menu, Comment)):
|
|
|
- stmt.dep_expr = _make_and(stmt.dep_expr, parsed_deps)
|
|
|
- else:
|
|
|
- depends_on_expr = _make_and(depends_on_expr, parsed_deps)
|
|
|
-
|
|
|
- elif t0 == T_HELP:
|
|
|
- # Find first non-blank (not all-space) line and get its
|
|
|
- # indentation
|
|
|
-
|
|
|
- line_feeder.remove_blank()
|
|
|
- line = line_feeder.get_next()
|
|
|
- if line is None:
|
|
|
- stmt.help = ""
|
|
|
- break
|
|
|
-
|
|
|
- indent = _indentation(line)
|
|
|
- if indent == 0:
|
|
|
- # If the first non-empty lines has zero indent, there is no
|
|
|
- # help text
|
|
|
- stmt.help = ""
|
|
|
- line_feeder.go_back()
|
|
|
- break
|
|
|
-
|
|
|
- # The help text goes on till the first non-empty line with less
|
|
|
- # indent
|
|
|
- help_lines = [_deindent(line, indent)]
|
|
|
- while 1:
|
|
|
- line = line_feeder.get_next()
|
|
|
- if line is None or \
|
|
|
- (not line.isspace() and _indentation(line) < indent):
|
|
|
- stmt.help = "".join(help_lines)
|
|
|
- break
|
|
|
- help_lines.append(_deindent(line, indent))
|
|
|
-
|
|
|
- if line is None:
|
|
|
- break
|
|
|
-
|
|
|
- line_feeder.go_back()
|
|
|
-
|
|
|
- elif t0 == T_SELECT:
|
|
|
- target = tokens.get_next()
|
|
|
-
|
|
|
- stmt.referenced_syms.add(target)
|
|
|
- stmt.selected_syms.add(target)
|
|
|
-
|
|
|
- if tokens.check(T_IF):
|
|
|
- new_selects.append((target,
|
|
|
- self._parse_expr(tokens, stmt, line, filename, linenr)))
|
|
|
- else:
|
|
|
- new_selects.append((target, None))
|
|
|
-
|
|
|
- elif t0 in (T_BOOL, T_TRISTATE, T_INT, T_HEX, T_STRING):
|
|
|
- stmt.type = token_to_type[t0]
|
|
|
- if len(tokens) > 1:
|
|
|
- new_prompt = parse_val_and_cond(tokens, line, filename, linenr)
|
|
|
-
|
|
|
- elif t0 == T_DEFAULT:
|
|
|
- new_def_exprs.append(parse_val_and_cond(tokens, line, filename, linenr))
|
|
|
-
|
|
|
- elif t0 == T_DEF_BOOL:
|
|
|
- stmt.type = BOOL
|
|
|
- if len(tokens) > 1:
|
|
|
- new_def_exprs.append(parse_val_and_cond(tokens, line, filename, linenr))
|
|
|
-
|
|
|
- elif t0 == T_PROMPT:
|
|
|
- # 'prompt' properties override each other within a single
|
|
|
- # definition of a symbol, but additional prompts can be added
|
|
|
- # by defining the symbol multiple times; hence 'new_prompt'
|
|
|
- # instead of 'prompt'.
|
|
|
- new_prompt = parse_val_and_cond(tokens, line, filename, linenr)
|
|
|
-
|
|
|
- elif t0 == T_RANGE:
|
|
|
- lower = tokens.get_next()
|
|
|
- upper = tokens.get_next()
|
|
|
- stmt.referenced_syms.add(lower)
|
|
|
- stmt.referenced_syms.add(upper)
|
|
|
-
|
|
|
- if tokens.check(T_IF):
|
|
|
- stmt.ranges.append((lower, upper,
|
|
|
- self._parse_expr(tokens, stmt, line, filename, linenr)))
|
|
|
- else:
|
|
|
- stmt.ranges.append((lower, upper, None))
|
|
|
-
|
|
|
- elif t0 == T_DEF_TRISTATE:
|
|
|
- stmt.type = TRISTATE
|
|
|
- if len(tokens) > 1:
|
|
|
- new_def_exprs.append(parse_val_and_cond(tokens, line, filename, linenr))
|
|
|
-
|
|
|
- elif t0 == T_OPTION:
|
|
|
- if tokens.check(T_ENV) and tokens.check(T_EQUAL):
|
|
|
- env_var = tokens.get_next()
|
|
|
-
|
|
|
- stmt.is_special_ = True
|
|
|
- stmt.is_from_env = True
|
|
|
-
|
|
|
- if env_var not in os.environ:
|
|
|
- self._warn("The symbol {0} references the "
|
|
|
- "non-existent environment variable {1} and "
|
|
|
- "will get the empty string as its value. "
|
|
|
- "If you're using kconfiglib via "
|
|
|
- "'make (i)scriptconfig', it should have "
|
|
|
- "set up the environment correctly for you. "
|
|
|
- "If you still got this message, that "
|
|
|
- "might be an error, and you should email "
|
|
|
- "ulfalizer a.t Google's email service."""
|
|
|
- .format(stmt.name, env_var),
|
|
|
- filename, linenr)
|
|
|
-
|
|
|
- stmt.cached_val = ""
|
|
|
- else:
|
|
|
- stmt.cached_val = os.environ[env_var]
|
|
|
-
|
|
|
- elif tokens.check(T_DEFCONFIG_LIST):
|
|
|
- self.defconfig_sym = stmt
|
|
|
-
|
|
|
- elif tokens.check(T_MODULES):
|
|
|
- # To reduce warning spam, only warn if 'option modules' is
|
|
|
- # set on some symbol that isn't MODULES, which should be
|
|
|
- # safe. I haven't run into any projects that make use
|
|
|
- # modules besides the kernel yet, and there it's likely to
|
|
|
- # keep being called "MODULES".
|
|
|
- if stmt.name != "MODULES":
|
|
|
- self._warn("the 'modules' option is not supported. "
|
|
|
- "Let me know if this is a problem for you; "
|
|
|
- "it shouldn't be that hard to implement. "
|
|
|
- "(Note that modules are still supported -- "
|
|
|
- "Kconfiglib just assumes the symbol name "
|
|
|
- "MODULES, like older versions of the C "
|
|
|
- "implementation did when 'option modules' "
|
|
|
- "wasn't used.)",
|
|
|
- filename, linenr)
|
|
|
-
|
|
|
- elif tokens.check(T_ALLNOCONFIG_Y):
|
|
|
- if not isinstance(stmt, Symbol):
|
|
|
- _parse_error(line,
|
|
|
- "the 'allnoconfig_y' option is only valid for symbols.",
|
|
|
- filename,
|
|
|
- linenr)
|
|
|
- stmt.allnoconfig_y = True
|
|
|
-
|
|
|
- else:
|
|
|
- _parse_error(line, "unrecognized option.", filename, linenr)
|
|
|
-
|
|
|
- elif t0 == T_VISIBLE:
|
|
|
- if not tokens.check(T_IF):
|
|
|
- _parse_error(line, 'expected "if" after "visible".', filename, linenr)
|
|
|
- if not isinstance(stmt, Menu):
|
|
|
- _parse_error(line,
|
|
|
- "'visible if' is only valid for menus.",
|
|
|
- filename,
|
|
|
- linenr)
|
|
|
-
|
|
|
- parsed_deps = self._parse_expr(tokens, stmt, line, filename, linenr)
|
|
|
- stmt.visible_if_expr = _make_and(stmt.visible_if_expr, parsed_deps)
|
|
|
-
|
|
|
- elif t0 == T_OPTIONAL:
|
|
|
- if not isinstance(stmt, Choice):
|
|
|
- _parse_error(line,
|
|
|
- '"optional" is only valid for choices.',
|
|
|
- filename,
|
|
|
- linenr)
|
|
|
- stmt.optional = True
|
|
|
-
|
|
|
- else:
|
|
|
- # See comment in Config.__init__()
|
|
|
- self.end_line = line
|
|
|
- self.end_line_tokens = tokens
|
|
|
- break
|
|
|
-
|
|
|
- # Propagate dependencies from enclosing menus and if's.
|
|
|
-
|
|
|
- # For menus and comments..
|
|
|
- if isinstance(stmt, (Menu, Comment)):
|
|
|
- stmt.orig_deps = stmt.dep_expr
|
|
|
- stmt.deps_from_containing = deps
|
|
|
- stmt.dep_expr = _make_and(stmt.dep_expr, deps)
|
|
|
-
|
|
|
- stmt.all_referenced_syms = \
|
|
|
- stmt.referenced_syms | _get_expr_syms(deps)
|
|
|
-
|
|
|
- # For symbols and choices..
|
|
|
- else:
|
|
|
-
|
|
|
- # See comment for 'menu_dep'
|
|
|
- stmt.menu_dep = depends_on_expr
|
|
|
-
|
|
|
- # Propagate dependencies specified with 'depends on' to any new
|
|
|
- # default expressions, prompts, and selections. ("New" since a
|
|
|
- # symbol might be defined in multiple places and the dependencies
|
|
|
- # should only apply to the local definition.)
|
|
|
-
|
|
|
- new_def_exprs = [(val_expr, _make_and(cond_expr, depends_on_expr))
|
|
|
- for val_expr, cond_expr in new_def_exprs]
|
|
|
-
|
|
|
- new_selects = [(target, _make_and(cond_expr, depends_on_expr))
|
|
|
- for target, cond_expr in new_selects]
|
|
|
-
|
|
|
- if new_prompt is not None:
|
|
|
- prompt, cond_expr = new_prompt
|
|
|
-
|
|
|
- # 'visible if' dependencies from enclosing menus get propagated
|
|
|
- # to prompts
|
|
|
- if visible_if_deps is not None:
|
|
|
- cond_expr = _make_and(cond_expr, visible_if_deps)
|
|
|
-
|
|
|
- new_prompt = (prompt, _make_and(cond_expr, depends_on_expr))
|
|
|
-
|
|
|
- # We save the original expressions -- before any menu and if
|
|
|
- # conditions have been propagated -- so these can be retrieved
|
|
|
- # later.
|
|
|
-
|
|
|
- stmt.orig_def_exprs.extend(new_def_exprs)
|
|
|
- if new_prompt is not None:
|
|
|
- stmt.orig_prompts.append(new_prompt)
|
|
|
-
|
|
|
- # Only symbols can select
|
|
|
- if isinstance(stmt, Symbol):
|
|
|
- stmt.orig_selects.extend(new_selects)
|
|
|
-
|
|
|
- # Save dependencies from enclosing menus and if's
|
|
|
- stmt.deps_from_containing = deps
|
|
|
-
|
|
|
- # The set of symbols referenced directly by the symbol/choice plus
|
|
|
- # all symbols referenced by enclosing menus and if's.
|
|
|
- stmt.all_referenced_syms = \
|
|
|
- stmt.referenced_syms | _get_expr_syms(deps)
|
|
|
-
|
|
|
- # Propagate dependencies from enclosing menus and if's
|
|
|
-
|
|
|
- stmt.def_exprs.extend([(val_expr, _make_and(cond_expr, deps))
|
|
|
- for val_expr, cond_expr in new_def_exprs])
|
|
|
-
|
|
|
- for target, cond in new_selects:
|
|
|
- target.rev_dep = _make_or(target.rev_dep,
|
|
|
- _make_and(stmt,
|
|
|
- _make_and(cond, deps)))
|
|
|
-
|
|
|
- if new_prompt is not None:
|
|
|
- prompt, cond_expr = new_prompt
|
|
|
- stmt.prompts.append((prompt, _make_and(cond_expr, deps)))
|
|
|
-
|
|
|
- #
|
|
|
- # Symbol table manipulation
|
|
|
- #
|
|
|
-
|
|
|
- def _sym_lookup(self, name, add_sym_if_not_exists = True):
|
|
|
- """Fetches the symbol 'name' from the symbol table, optionally adding
|
|
|
- it if it does not exist (this is usually what we want)."""
|
|
|
- if name in self.syms:
|
|
|
- return self.syms[name]
|
|
|
-
|
|
|
- new_sym = Symbol()
|
|
|
- new_sym.config = self
|
|
|
- new_sym.name = name
|
|
|
-
|
|
|
- if add_sym_if_not_exists:
|
|
|
- self.syms[name] = new_sym
|
|
|
- else:
|
|
|
- # This warning is generated while evaluating an expression
|
|
|
- # containing undefined symbols using Config.eval()
|
|
|
- self._warn("no symbol {0} in configuration".format(name))
|
|
|
-
|
|
|
- return new_sym
|
|
|
-
|
|
|
- #
|
|
|
- # Evaluation of symbols and expressions
|
|
|
- #
|
|
|
-
|
|
|
- def _eval_expr(self, expr):
|
|
|
- """Evaluates an expression and returns one of the tristate values "n",
|
|
|
- "m" or "y"."""
|
|
|
- res = self._eval_expr_2(expr)
|
|
|
-
|
|
|
- # Promote "m" to "y" if we're running without modules. Internally, "m"
|
|
|
- # is often rewritten to "m" && MODULES by both the C implementation and
|
|
|
- # kconfiglib, which takes care of cases where "m" should be false if
|
|
|
- # we're running without modules.
|
|
|
- if res == "m" and not self._has_modules():
|
|
|
- return "y"
|
|
|
-
|
|
|
- return res
|
|
|
-
|
|
|
- def _eval_expr_2(self, expr):
|
|
|
- if expr is None:
|
|
|
- return "y"
|
|
|
-
|
|
|
- if isinstance(expr, Symbol):
|
|
|
- # Non-bool/tristate symbols are always "n" in a tristate sense,
|
|
|
- # regardless of their value
|
|
|
- if expr.type != BOOL and expr.type != TRISTATE:
|
|
|
- return "n"
|
|
|
- return expr.get_value()
|
|
|
-
|
|
|
- if isinstance(expr, str):
|
|
|
- return expr if (expr == "y" or expr == "m") else "n"
|
|
|
-
|
|
|
- first_expr = expr[0]
|
|
|
-
|
|
|
- if first_expr == AND:
|
|
|
- res = "y"
|
|
|
- for subexpr in expr[1]:
|
|
|
- ev = self._eval_expr_2(subexpr)
|
|
|
- # Return immediately upon discovering an "n" term
|
|
|
- if ev == "n":
|
|
|
- return "n"
|
|
|
- if ev == "m":
|
|
|
- res = "m"
|
|
|
- # 'res' is either "m" or "y" here; we already handled the
|
|
|
- # short-circuiting "n" case in the loop.
|
|
|
- return res
|
|
|
-
|
|
|
- if first_expr == OR:
|
|
|
- res = "n"
|
|
|
- for subexpr in expr[1]:
|
|
|
- ev = self._eval_expr_2(subexpr)
|
|
|
- # Return immediately upon discovering a "y" term
|
|
|
- if ev == "y":
|
|
|
- return "y"
|
|
|
- if ev == "m":
|
|
|
- res = "m"
|
|
|
- # 'res' is either "n" or "m" here; we already handled the
|
|
|
- # short-circuiting "y" case in the loop.
|
|
|
- return res
|
|
|
-
|
|
|
- if first_expr == NOT:
|
|
|
- ev = self._eval_expr_2(expr[1])
|
|
|
- if ev == "y":
|
|
|
- return "n"
|
|
|
- return "y" if (ev == "n") else "m"
|
|
|
-
|
|
|
- if first_expr == EQUAL:
|
|
|
- return "y" if (_str_val(expr[1]) == _str_val(expr[2])) else "n"
|
|
|
-
|
|
|
- if first_expr == UNEQUAL:
|
|
|
- return "y" if (_str_val(expr[1]) != _str_val(expr[2])) else "n"
|
|
|
-
|
|
|
- _internal_error("Internal error while evaluating expression: "
|
|
|
- "unknown operation {0}.".format(first_expr))
|
|
|
-
|
|
|
- def _eval_min(self, e1, e2):
|
|
|
- """Returns the minimum value of the two expressions. Equates None with
|
|
|
- 'y'."""
|
|
|
- e1_eval = self._eval_expr(e1)
|
|
|
- e2_eval = self._eval_expr(e2)
|
|
|
- return e1_eval if tri_less(e1_eval, e2_eval) else e2_eval
|
|
|
-
|
|
|
- def _eval_max(self, e1, e2):
|
|
|
- """Returns the maximum value of the two expressions. Equates None with
|
|
|
- 'y'."""
|
|
|
- e1_eval = self._eval_expr(e1)
|
|
|
- e2_eval = self._eval_expr(e2)
|
|
|
- return e1_eval if tri_greater(e1_eval, e2_eval) else e2_eval
|
|
|
-
|
|
|
- #
|
|
|
- # Methods related to the MODULES symbol
|
|
|
- #
|
|
|
-
|
|
|
- def _has_modules(self):
|
|
|
- modules_sym = self.syms.get("MODULES")
|
|
|
- return (modules_sym is not None) and (modules_sym.get_value() == "y")
|
|
|
-
|
|
|
- #
|
|
|
- # Dependency tracking
|
|
|
- #
|
|
|
-
|
|
|
- def _build_dep(self):
|
|
|
- """Populates the Symbol.dep sets, linking the symbol to the symbols
|
|
|
- that immediately depend on it in the sense that changing the value of
|
|
|
- the symbol might affect the values of those other symbols. This is used
|
|
|
- for caching/invalidation purposes. The calculated sets might be larger
|
|
|
- than necessary as we don't do any complicated analysis of the
|
|
|
- expressions."""
|
|
|
-
|
|
|
- # Adds 'sym' as a directly dependent symbol to all symbols that appear
|
|
|
- # in the expression 'e'
|
|
|
- def add_expr_deps(e, sym):
|
|
|
- for s in _get_expr_syms(e):
|
|
|
- s.dep.add(sym)
|
|
|
-
|
|
|
- # The directly dependent symbols of a symbol are:
|
|
|
- # - Any symbols whose prompts, default values, rev_dep (select
|
|
|
- # condition), or ranges depend on the symbol
|
|
|
- # - Any symbols that belong to the same choice statement as the symbol
|
|
|
- # (these won't be included in 'dep' as that makes the dependency
|
|
|
- # graph unwieldy, but Symbol._get_dependent() will include them)
|
|
|
- # - Any symbols in a choice statement that depends on the symbol
|
|
|
- for sym in self.syms_iter():
|
|
|
- for _, e in sym.prompts:
|
|
|
- add_expr_deps(e, sym)
|
|
|
-
|
|
|
- for v, e in sym.def_exprs:
|
|
|
- add_expr_deps(v, sym)
|
|
|
- add_expr_deps(e, sym)
|
|
|
-
|
|
|
- add_expr_deps(sym.rev_dep, sym)
|
|
|
-
|
|
|
- for l, u, e in sym.ranges:
|
|
|
- add_expr_deps(l, sym)
|
|
|
- add_expr_deps(u, sym)
|
|
|
- add_expr_deps(e, sym)
|
|
|
-
|
|
|
- if sym.is_choice_symbol_:
|
|
|
- choice = sym.parent
|
|
|
- for _, e in choice.prompts:
|
|
|
- add_expr_deps(e, sym)
|
|
|
- for _, e in choice.def_exprs:
|
|
|
- add_expr_deps(e, sym)
|
|
|
-
|
|
|
- def _expr_val_str(self, expr, no_value_str = "(none)", get_val_instead_of_eval = False):
|
|
|
- # Since values are valid expressions, _expr_to_str() will get a nice
|
|
|
- # string representation for those as well.
|
|
|
-
|
|
|
- if expr is None:
|
|
|
- return no_value_str
|
|
|
-
|
|
|
- if get_val_instead_of_eval:
|
|
|
- if isinstance(expr, str):
|
|
|
- return _expr_to_str(expr)
|
|
|
- val = expr.get_value()
|
|
|
- else:
|
|
|
- val = self._eval_expr(expr)
|
|
|
-
|
|
|
- return "{0} (value: {1})".format(_expr_to_str(expr), _expr_to_str(val))
|
|
|
-
|
|
|
- def _expand_sym_refs(self, s):
|
|
|
- """Expands $-references to symbols in 's' to symbol values, or to the
|
|
|
- empty string for undefined symbols."""
|
|
|
-
|
|
|
- while 1:
|
|
|
- sym_ref_match = _sym_ref_re_search(s)
|
|
|
- if sym_ref_match is None:
|
|
|
- return s
|
|
|
-
|
|
|
- sym_name = sym_ref_match.group(0)[1:]
|
|
|
- sym = self.syms.get(sym_name)
|
|
|
- expansion = "" if sym is None else sym.get_value()
|
|
|
-
|
|
|
- s = s[:sym_ref_match.start()] + \
|
|
|
- expansion + \
|
|
|
- s[sym_ref_match.end():]
|
|
|
-
|
|
|
- def _get_sym_or_choice_str(self, sc):
|
|
|
- """Symbols and choices have many properties in common, so we factor out
|
|
|
- common __str__() stuff here. "sc" is short for "symbol or choice"."""
|
|
|
-
|
|
|
- # As we deal a lot with string representations here, use some
|
|
|
- # convenient shorthand:
|
|
|
- s = _expr_to_str
|
|
|
-
|
|
|
- #
|
|
|
- # Common symbol/choice properties
|
|
|
- #
|
|
|
-
|
|
|
- user_val_str = "(no user value)" if sc.user_val is None else s(sc.user_val)
|
|
|
-
|
|
|
- # Build prompts string
|
|
|
- if sc.prompts == []:
|
|
|
- prompts_str = " (no prompts)"
|
|
|
- else:
|
|
|
- prompts_str_rows = []
|
|
|
- for prompt, cond_expr in sc.orig_prompts:
|
|
|
- if cond_expr is None:
|
|
|
- prompts_str_rows.append(' "{0}"'.format(prompt))
|
|
|
- else:
|
|
|
- prompts_str_rows.append(' "{0}" if {1}'
|
|
|
- .format(prompt, self._expr_val_str(cond_expr)))
|
|
|
- prompts_str = "\n".join(prompts_str_rows)
|
|
|
-
|
|
|
- # Build locations string
|
|
|
- if sc.def_locations == []:
|
|
|
- locations_str = "(no locations)"
|
|
|
- else:
|
|
|
- locations_str = " ".join(["{0}:{1}".format(filename, linenr) for
|
|
|
- (filename, linenr) in sc.def_locations])
|
|
|
-
|
|
|
- # Build additional-dependencies-from-menus-and-if's string
|
|
|
- additional_deps_str = " " + self._expr_val_str(sc.deps_from_containing,
|
|
|
- "(no additional dependencies)")
|
|
|
-
|
|
|
- #
|
|
|
- # Symbol-specific stuff
|
|
|
- #
|
|
|
-
|
|
|
- if isinstance(sc, Symbol):
|
|
|
- # Build ranges string
|
|
|
- if isinstance(sc, Symbol):
|
|
|
- if sc.ranges == []:
|
|
|
- ranges_str = " (no ranges)"
|
|
|
- else:
|
|
|
- ranges_str_rows = []
|
|
|
- for l, u, cond_expr in sc.ranges:
|
|
|
- if cond_expr is None:
|
|
|
- ranges_str_rows.append(" [{0}, {1}]".format(s(l), s(u)))
|
|
|
- else:
|
|
|
- ranges_str_rows.append(" [{0}, {1}] if {2}"
|
|
|
- .format(s(l), s(u), self._expr_val_str(cond_expr)))
|
|
|
- ranges_str = "\n".join(ranges_str_rows)
|
|
|
-
|
|
|
- # Build default values string
|
|
|
- if sc.def_exprs == []:
|
|
|
- defaults_str = " (no default values)"
|
|
|
- else:
|
|
|
- defaults_str_rows = []
|
|
|
- for val_expr, cond_expr in sc.orig_def_exprs:
|
|
|
- row_str = " " + self._expr_val_str(val_expr, "(none)", sc.type == STRING)
|
|
|
- defaults_str_rows.append(row_str)
|
|
|
- defaults_str_rows.append(" Condition: " + self._expr_val_str(cond_expr))
|
|
|
- defaults_str = "\n".join(defaults_str_rows)
|
|
|
-
|
|
|
- # Build selects string
|
|
|
- if sc.orig_selects == []:
|
|
|
- selects_str = " (no selects)"
|
|
|
- else:
|
|
|
- selects_str_rows = []
|
|
|
- for target, cond_expr in sc.orig_selects:
|
|
|
- if cond_expr is None:
|
|
|
- selects_str_rows.append(" {0}".format(target.name))
|
|
|
- else:
|
|
|
- selects_str_rows.append(" {0} if ".format(target.name) +
|
|
|
- self._expr_val_str(cond_expr))
|
|
|
- selects_str = "\n".join(selects_str_rows)
|
|
|
-
|
|
|
- res = _sep_lines("Symbol " +
|
|
|
- ("(no name)" if sc.name is None else sc.name),
|
|
|
- "Type : " + typename[sc.type],
|
|
|
- "Value : " + s(sc.get_value()),
|
|
|
- "User value : " + user_val_str,
|
|
|
- "Visibility : " + s(sc.get_visibility()),
|
|
|
- "Is choice item : " + bool_str[sc.is_choice_symbol_],
|
|
|
- "Is defined : " + bool_str[sc.is_defined_],
|
|
|
- "Is from env. : " + bool_str[sc.is_from_env],
|
|
|
- "Is special : " + bool_str[sc.is_special_] + "\n")
|
|
|
- if sc.ranges != []:
|
|
|
- res += _sep_lines("Ranges:",
|
|
|
- ranges_str + "\n")
|
|
|
- res += _sep_lines("Prompts:",
|
|
|
- prompts_str,
|
|
|
- "Default values:",
|
|
|
- defaults_str,
|
|
|
- "Selects:",
|
|
|
- selects_str,
|
|
|
- "Reverse (select-related) dependencies:",
|
|
|
- " (no reverse dependencies)" if sc.rev_dep == "n"
|
|
|
- else " " + self._expr_val_str(sc.rev_dep),
|
|
|
- "Additional dependencies from enclosing menus and if's:",
|
|
|
- additional_deps_str,
|
|
|
- "Locations: " + locations_str)
|
|
|
-
|
|
|
- return res
|
|
|
-
|
|
|
- #
|
|
|
- # Choice-specific stuff
|
|
|
- #
|
|
|
-
|
|
|
- # Build selected symbol string
|
|
|
- sel = sc.get_selection()
|
|
|
- sel_str = "(no selection)" if sel is None else sel.name
|
|
|
-
|
|
|
- # Build default values string
|
|
|
- if sc.def_exprs == []:
|
|
|
- defaults_str = " (no default values)"
|
|
|
- else:
|
|
|
- defaults_str_rows = []
|
|
|
- for sym, cond_expr in sc.orig_def_exprs:
|
|
|
- if cond_expr is None:
|
|
|
- defaults_str_rows.append(" {0}".format(sym.name))
|
|
|
- else:
|
|
|
- defaults_str_rows.append(" {0} if ".format(sym.name) +
|
|
|
- self._expr_val_str(cond_expr))
|
|
|
- defaults_str = "\n".join(defaults_str_rows)
|
|
|
-
|
|
|
- # Build contained symbols string
|
|
|
- names = [sym.name for sym in sc.get_symbols()]
|
|
|
- syms_string = "(empty)" if names == [] else " ".join(names)
|
|
|
-
|
|
|
- return _sep_lines("Choice",
|
|
|
- "Name (for named choices): " +
|
|
|
- ("(no name)" if sc.name is None else sc.name),
|
|
|
- "Type : " + typename[sc.type],
|
|
|
- "Selected symbol : " + sel_str,
|
|
|
- "User value : " + user_val_str,
|
|
|
- "Mode : " + s(sc.get_mode()),
|
|
|
- "Visibility : " + s(sc.get_visibility()),
|
|
|
- "Optional : " + bool_str[sc.optional],
|
|
|
- "Prompts:",
|
|
|
- prompts_str,
|
|
|
- "Defaults:",
|
|
|
- defaults_str,
|
|
|
- "Choice symbols:",
|
|
|
- " " + syms_string,
|
|
|
- "Additional dependencies from enclosing menus and if's:",
|
|
|
- additional_deps_str,
|
|
|
- "Locations: " + locations_str)
|
|
|
-
|
|
|
- def _expr_depends_on(self, expr, sym):
|
|
|
- """Reimplementation of expr_depends_symbol() from mconf.c. Used to
|
|
|
- determine if a submenu should be implicitly created, which influences what
|
|
|
- items inside choice statements are considered choice items."""
|
|
|
- if expr is None:
|
|
|
- return False
|
|
|
-
|
|
|
- def rec(expr):
|
|
|
- if isinstance(expr, str):
|
|
|
- return False
|
|
|
- if isinstance(expr, Symbol):
|
|
|
- return expr is sym
|
|
|
-
|
|
|
- e0 = expr[0]
|
|
|
- if e0 == EQUAL or e0 == UNEQUAL:
|
|
|
- return self._eq_to_sym(expr) is sym
|
|
|
- if e0 == AND:
|
|
|
- for and_expr in expr[1]:
|
|
|
- if rec(and_expr):
|
|
|
- return True
|
|
|
- return False
|
|
|
-
|
|
|
- return rec(expr)
|
|
|
-
|
|
|
- def _eq_to_sym(self, eq):
|
|
|
- """_expr_depends_on() helper. For (in)equalities of the form sym = y/m
|
|
|
- or sym != n, returns sym. For other (in)equalities, returns None."""
|
|
|
- relation, left, right = eq
|
|
|
- left = self._transform_n_m_y(left)
|
|
|
- right = self._transform_n_m_y(right)
|
|
|
-
|
|
|
- # Make sure the symbol (if any) appears to the left
|
|
|
- if not isinstance(left, Symbol):
|
|
|
- left, right = right, left
|
|
|
- if not isinstance(left, Symbol):
|
|
|
- return None
|
|
|
- if (relation == EQUAL and (right == "y" or right == "m")) or \
|
|
|
- (relation == UNEQUAL and right == "n"):
|
|
|
- return left
|
|
|
- return None
|
|
|
-
|
|
|
- def _transform_n_m_y(self, item):
|
|
|
- """_eq_to_sym() helper. Translates the symbols n, m, and y to their
|
|
|
- string equivalents."""
|
|
|
- if item is self.n:
|
|
|
- return "n"
|
|
|
- if item is self.m:
|
|
|
- return "m"
|
|
|
- if item is self.y:
|
|
|
- return "y"
|
|
|
- return item
|
|
|
-
|
|
|
- def _warn(self, msg, filename = None, linenr = None):
|
|
|
- """For printing warnings to stderr."""
|
|
|
- if self.print_warnings:
|
|
|
- _stderr_msg("warning: " + msg, filename, linenr)
|
|
|
-
|
|
|
-class Item(object):
|
|
|
-
|
|
|
- """Base class for symbols and other Kconfig constructs. Subclasses are
|
|
|
- Symbol, Choice, Menu, and Comment."""
|
|
|
-
|
|
|
- def is_symbol(self):
|
|
|
- """Returns True if the item is a symbol. Short for
|
|
|
- isinstance(item, kconfiglib.Symbol)."""
|
|
|
- return isinstance(self, Symbol)
|
|
|
-
|
|
|
- def is_choice(self):
|
|
|
- """Returns True if the item is a choice. Short for
|
|
|
- isinstance(item, kconfiglib.Choice)."""
|
|
|
- return isinstance(self, Choice)
|
|
|
-
|
|
|
- def is_menu(self):
|
|
|
- """Returns True if the item is a menu. Short for
|
|
|
- isinstance(item, kconfiglib.Menu)."""
|
|
|
- return isinstance(self, Menu)
|
|
|
-
|
|
|
- def is_comment(self):
|
|
|
- """Returns True if the item is a comment. Short for
|
|
|
- isinstance(item, kconfiglib.Comment)."""
|
|
|
- return isinstance(self, Comment)
|
|
|
-
|
|
|
-class Symbol(Item):
|
|
|
-
|
|
|
- """Represents a configuration symbol - e.g. FOO for
|
|
|
-
|
|
|
- config FOO
|
|
|
- ..."""
|
|
|
-
|
|
|
- #
|
|
|
- # Public interface
|
|
|
- #
|
|
|
-
|
|
|
- def get_value(self):
|
|
|
- """Calculate and return the value of the symbol. See also
|
|
|
- Symbol.set_user_value()."""
|
|
|
-
|
|
|
- if self.cached_val is not None:
|
|
|
- return self.cached_val
|
|
|
-
|
|
|
- self.write_to_conf = False
|
|
|
-
|
|
|
- # As a quirk of Kconfig, undefined symbols get their name as their
|
|
|
- # value. This is why things like "FOO = bar" work for seeing if FOO has
|
|
|
- # the value "bar".
|
|
|
- if self.type == UNKNOWN:
|
|
|
- self.cached_val = self.name
|
|
|
- return self.name
|
|
|
-
|
|
|
- new_val = default_value[self.type]
|
|
|
-
|
|
|
- vis = _get_visibility(self)
|
|
|
-
|
|
|
- if self.type == BOOL or self.type == TRISTATE:
|
|
|
- # The visibility and mode (modules-only or single-selection) of
|
|
|
- # choice items will be taken into account in _get_visibility()
|
|
|
- if self.is_choice_symbol_:
|
|
|
- if vis != "n":
|
|
|
- choice = self.parent
|
|
|
- mode = choice.get_mode()
|
|
|
-
|
|
|
- self.write_to_conf = (mode != "n")
|
|
|
-
|
|
|
- if mode == "y":
|
|
|
- new_val = "y" if (choice.get_selection() is self) else "n"
|
|
|
- elif mode == "m":
|
|
|
- if self.user_val == "m" or self.user_val == "y":
|
|
|
- new_val = "m"
|
|
|
-
|
|
|
- else:
|
|
|
- # If the symbol is visible and has a user value, use that.
|
|
|
- # Otherwise, look at defaults.
|
|
|
- use_defaults = True
|
|
|
-
|
|
|
- if vis != "n":
|
|
|
- self.write_to_conf = True
|
|
|
- if self.user_val is not None:
|
|
|
- new_val = self.config._eval_min(self.user_val, vis)
|
|
|
- use_defaults = False
|
|
|
-
|
|
|
- if use_defaults:
|
|
|
- for val_expr, cond_expr in self.def_exprs:
|
|
|
- cond_eval = self.config._eval_expr(cond_expr)
|
|
|
- if cond_eval != "n":
|
|
|
- self.write_to_conf = True
|
|
|
- new_val = self.config._eval_min(val_expr, cond_eval)
|
|
|
- break
|
|
|
-
|
|
|
- # Reverse (select-related) dependencies take precedence
|
|
|
- rev_dep_val = self.config._eval_expr(self.rev_dep)
|
|
|
- if rev_dep_val != "n":
|
|
|
- self.write_to_conf = True
|
|
|
- new_val = self.config._eval_max(new_val, rev_dep_val)
|
|
|
-
|
|
|
- # Promote "m" to "y" for booleans
|
|
|
- if new_val == "m" and self.type == BOOL:
|
|
|
- new_val = "y"
|
|
|
-
|
|
|
- elif self.type == STRING:
|
|
|
- use_defaults = True
|
|
|
-
|
|
|
- if vis != "n":
|
|
|
- self.write_to_conf = True
|
|
|
- if self.user_val is not None:
|
|
|
- new_val = self.user_val
|
|
|
- use_defaults = False
|
|
|
-
|
|
|
- if use_defaults:
|
|
|
- for val_expr, cond_expr in self.def_exprs:
|
|
|
- if self.config._eval_expr(cond_expr) != "n":
|
|
|
- self.write_to_conf = True
|
|
|
- new_val = _str_val(val_expr)
|
|
|
- break
|
|
|
-
|
|
|
- elif self.type == HEX or self.type == INT:
|
|
|
- has_active_range = False
|
|
|
- low = None
|
|
|
- high = None
|
|
|
- use_defaults = True
|
|
|
-
|
|
|
- base = 16 if self.type == HEX else 10
|
|
|
-
|
|
|
- for(l, h, cond_expr) in self.ranges:
|
|
|
- if self.config._eval_expr(cond_expr) != "n":
|
|
|
- has_active_range = True
|
|
|
-
|
|
|
- low_str = _str_val(l)
|
|
|
- high_str = _str_val(h)
|
|
|
- low = int(low_str, base) if \
|
|
|
- _is_base_n(low_str, base) else 0
|
|
|
- high = int(high_str, base) if \
|
|
|
- _is_base_n(high_str, base) else 0
|
|
|
-
|
|
|
- break
|
|
|
-
|
|
|
- if vis != "n":
|
|
|
- self.write_to_conf = True
|
|
|
-
|
|
|
- if self.user_val is not None and \
|
|
|
- _is_base_n(self.user_val, base) and \
|
|
|
- (not has_active_range or
|
|
|
- low <= int(self.user_val, base) <= high):
|
|
|
-
|
|
|
- # If the user value is OK, it is stored in exactly the same
|
|
|
- # form as specified in the assignment (with or without
|
|
|
- # "0x", etc).
|
|
|
-
|
|
|
- use_defaults = False
|
|
|
- new_val = self.user_val
|
|
|
-
|
|
|
- if use_defaults:
|
|
|
- for val_expr, cond_expr in self.def_exprs:
|
|
|
- if self.config._eval_expr(cond_expr) != "n":
|
|
|
- self.write_to_conf = True
|
|
|
-
|
|
|
- # If the default value is OK, it is stored in exactly
|
|
|
- # the same form as specified. Otherwise, it is clamped
|
|
|
- # to the range, and the output has "0x" as appropriate
|
|
|
- # for the type.
|
|
|
-
|
|
|
- new_val = _str_val(val_expr)
|
|
|
-
|
|
|
- if _is_base_n(new_val, base):
|
|
|
- new_val_num = int(new_val, base)
|
|
|
- if has_active_range:
|
|
|
- clamped_val = None
|
|
|
-
|
|
|
- if new_val_num < low:
|
|
|
- clamped_val = low
|
|
|
- elif new_val_num > high:
|
|
|
- clamped_val = high
|
|
|
-
|
|
|
- if clamped_val is not None:
|
|
|
- new_val = (hex(clamped_val) if \
|
|
|
- self.type == HEX else str(clamped_val))
|
|
|
-
|
|
|
- break
|
|
|
- else: # For the for loop
|
|
|
- # If no user value or default kicks in but the hex/int has
|
|
|
- # an active range, then the low end of the range is used,
|
|
|
- # provided it's > 0, with "0x" prepended as appropriate.
|
|
|
- if has_active_range and low > 0:
|
|
|
- new_val = (hex(low) if self.type == HEX else str(low))
|
|
|
-
|
|
|
- self.cached_val = new_val
|
|
|
- return new_val
|
|
|
-
|
|
|
- def set_user_value(self, v):
|
|
|
- """Sets the user value of the symbol.
|
|
|
-
|
|
|
- Equal in effect to assigning the value to the symbol within a .config
|
|
|
- file. Use get_lower/upper_bound() or get_assignable_values() to find
|
|
|
- the range of currently assignable values for bool and tristate symbols;
|
|
|
- setting values outside this range will cause the user value to differ
|
|
|
- from the result of Symbol.get_value() (be truncated). Values that are
|
|
|
- invalid for the type (such as a_bool.set_user_value("foo")) are
|
|
|
- ignored, and a warning is emitted if an attempt is made to assign such
|
|
|
- a value.
|
|
|
-
|
|
|
- For any type of symbol, is_modifiable() can be used to check if a user
|
|
|
- value will currently have any effect on the symbol, as determined by
|
|
|
- its visibility and range of assignable values. Any value that is valid
|
|
|
- for the type (bool, tristate, etc.) will end up being reflected in
|
|
|
- get_user_value() though, and might have an effect later if conditions
|
|
|
- change. To get rid of the user value, use unset_user_value().
|
|
|
-
|
|
|
- Any symbols dependent on the symbol are (recursively) invalidated, so
|
|
|
- things will just work with regards to dependencies.
|
|
|
-
|
|
|
- v -- The user value to give to the symbol."""
|
|
|
- self._set_user_value_no_invalidate(v, False)
|
|
|
-
|
|
|
- # There might be something more efficient you could do here, but play
|
|
|
- # it safe.
|
|
|
- if self.name == "MODULES":
|
|
|
- self.config._invalidate_all()
|
|
|
- return
|
|
|
-
|
|
|
- self._invalidate()
|
|
|
- self._invalidate_dependent()
|
|
|
-
|
|
|
- def unset_user_value(self):
|
|
|
- """Resets the user value of the symbol, as if the symbol had never
|
|
|
- gotten a user value via Config.load_config() or
|
|
|
- Symbol.set_user_value()."""
|
|
|
- self._unset_user_value_no_recursive_invalidate()
|
|
|
- self._invalidate_dependent()
|
|
|
-
|
|
|
- def get_user_value(self):
|
|
|
- """Returns the value assigned to the symbol in a .config or via
|
|
|
- Symbol.set_user_value() (provided the value was valid for the type of the
|
|
|
- symbol). Returns None in case of no user value."""
|
|
|
- return self.user_val
|
|
|
-
|
|
|
- def get_name(self):
|
|
|
- """Returns the name of the symbol."""
|
|
|
- return self.name
|
|
|
-
|
|
|
- def get_prompts(self):
|
|
|
- """Returns a list of prompts defined for the symbol, in the order they
|
|
|
- appear in the configuration files. Returns the empty list for symbols
|
|
|
- with no prompt.
|
|
|
-
|
|
|
- This list will have a single entry for the vast majority of symbols
|
|
|
- having prompts, but having multiple prompts for a single symbol is
|
|
|
- possible through having multiple 'config' entries for it."""
|
|
|
- return [prompt for prompt, _ in self.orig_prompts]
|
|
|
-
|
|
|
- def get_upper_bound(self):
|
|
|
- """For string/hex/int symbols and for bool and tristate symbols that
|
|
|
- cannot be modified (see is_modifiable()), returns None.
|
|
|
-
|
|
|
- Otherwise, returns the highest value the symbol can be set to with
|
|
|
- Symbol.set_user_value() (that will not be truncated): one of "m" or "y",
|
|
|
- arranged from lowest to highest. This corresponds to the highest value
|
|
|
- the symbol could be given in e.g. the 'make menuconfig' interface.
|
|
|
-
|
|
|
- See also the tri_less*() and tri_greater*() functions, which could come
|
|
|
- in handy."""
|
|
|
- if self.type != BOOL and self.type != TRISTATE:
|
|
|
- return None
|
|
|
- rev_dep = self.config._eval_expr(self.rev_dep)
|
|
|
- # A bool selected to "m" gets promoted to "y"
|
|
|
- if self.type == BOOL and rev_dep == "m":
|
|
|
- rev_dep = "y"
|
|
|
- vis = _get_visibility(self)
|
|
|
- if (tri_to_int[vis] - tri_to_int[rev_dep]) > 0:
|
|
|
- return vis
|
|
|
- return None
|
|
|
-
|
|
|
- def get_lower_bound(self):
|
|
|
- """For string/hex/int symbols and for bool and tristate symbols that
|
|
|
- cannot be modified (see is_modifiable()), returns None.
|
|
|
-
|
|
|
- Otherwise, returns the lowest value the symbol can be set to with
|
|
|
- Symbol.set_user_value() (that will not be truncated): one of "n" or "m",
|
|
|
- arranged from lowest to highest. This corresponds to the lowest value
|
|
|
- the symbol could be given in e.g. the 'make menuconfig' interface.
|
|
|
-
|
|
|
- See also the tri_less*() and tri_greater*() functions, which could come
|
|
|
- in handy."""
|
|
|
- if self.type != BOOL and self.type != TRISTATE:
|
|
|
- return None
|
|
|
- rev_dep = self.config._eval_expr(self.rev_dep)
|
|
|
- # A bool selected to "m" gets promoted to "y"
|
|
|
- if self.type == BOOL and rev_dep == "m":
|
|
|
- rev_dep = "y"
|
|
|
- if (tri_to_int[_get_visibility(self)] - tri_to_int[rev_dep]) > 0:
|
|
|
- return rev_dep
|
|
|
- return None
|
|
|
-
|
|
|
- def get_assignable_values(self):
|
|
|
- """For string/hex/int symbols and for bool and tristate symbols that
|
|
|
- cannot be modified (see is_modifiable()), returns the empty list.
|
|
|
-
|
|
|
- Otherwise, returns a list containing the user values that can be
|
|
|
- assigned to the symbol (that won't be truncated). Usage example:
|
|
|
-
|
|
|
- if "m" in sym.get_assignable_values():
|
|
|
- sym.set_user_value("m")
|
|
|
-
|
|
|
- This is basically a more convenient interface to
|
|
|
- get_lower/upper_bound() when wanting to test if a particular tristate
|
|
|
- value can be assigned."""
|
|
|
- if self.type != BOOL and self.type != TRISTATE:
|
|
|
- return []
|
|
|
- rev_dep = self.config._eval_expr(self.rev_dep)
|
|
|
- # A bool selected to "m" gets promoted to "y"
|
|
|
- if self.type == BOOL and rev_dep == "m":
|
|
|
- rev_dep = "y"
|
|
|
- res = ["n", "m", "y"][tri_to_int[rev_dep] :
|
|
|
- tri_to_int[_get_visibility(self)] + 1]
|
|
|
- return res if len(res) > 1 else []
|
|
|
-
|
|
|
- def get_type(self):
|
|
|
- """Returns the type of the symbol: one of UNKNOWN, BOOL, TRISTATE,
|
|
|
- STRING, HEX, or INT. These are defined at the top level of the module,
|
|
|
- so you'd do something like
|
|
|
-
|
|
|
- if sym.get_type() == kconfiglib.STRING:
|
|
|
- ..."""
|
|
|
- return self.type
|
|
|
-
|
|
|
- def get_visibility(self):
|
|
|
- """Returns the visibility of the symbol: one of "n", "m" or "y". For
|
|
|
- bool and tristate symbols, this is an upper bound on the value users
|
|
|
- can set for the symbol. For other types of symbols, a visibility of "n"
|
|
|
- means the user value will be ignored. A visibility of "n" corresponds
|
|
|
- to not being visible in the 'make *config' interfaces.
|
|
|
-
|
|
|
- Example (assuming we're running with modules enabled -- i.e., MODULES
|
|
|
- set to 'y'):
|
|
|
-
|
|
|
- # Assume this has been assigned 'n'
|
|
|
- config N_SYM
|
|
|
- tristate "N_SYM"
|
|
|
-
|
|
|
- # Assume this has been assigned 'm'
|
|
|
- config M_SYM
|
|
|
- tristate "M_SYM"
|
|
|
-
|
|
|
- # Has visibility 'n'
|
|
|
- config A
|
|
|
- tristate "A"
|
|
|
- depends on N_SYM
|
|
|
-
|
|
|
- # Has visibility 'm'
|
|
|
- config B
|
|
|
- tristate "B"
|
|
|
- depends on M_SYM
|
|
|
-
|
|
|
- # Has visibility 'y'
|
|
|
- config C
|
|
|
- tristate "C"
|
|
|
-
|
|
|
- # Has no prompt, and hence visibility 'n'
|
|
|
- config D
|
|
|
- tristate
|
|
|
-
|
|
|
- Having visibility be tri-valued ensures that e.g. a symbol cannot be
|
|
|
- set to "y" by the user if it depends on a symbol with value "m", which
|
|
|
- wouldn't be safe.
|
|
|
-
|
|
|
- You should probably look at get_lower/upper_bound(),
|
|
|
- get_assignable_values() and is_modifiable() before using this."""
|
|
|
- return _get_visibility(self)
|
|
|
-
|
|
|
- def get_parent(self):
|
|
|
- """Returns the menu or choice statement that contains the symbol, or
|
|
|
- None if the symbol is at the top level. Note that if statements are
|
|
|
- treated as syntactic and do not have an explicit class
|
|
|
- representation."""
|
|
|
- return self.parent
|
|
|
-
|
|
|
- def get_referenced_symbols(self, refs_from_enclosing = False):
|
|
|
- """Returns the set() of all symbols referenced by this symbol. For
|
|
|
- example, the symbol defined by
|
|
|
-
|
|
|
- config FOO
|
|
|
- bool
|
|
|
- prompt "foo" if A && B
|
|
|
- default C if D
|
|
|
- depends on E
|
|
|
- select F if G
|
|
|
-
|
|
|
- references the symbols A through G.
|
|
|
-
|
|
|
- refs_from_enclosing (default: False) -- If True, the symbols
|
|
|
- referenced by enclosing menus and if's will be
|
|
|
- included in the result."""
|
|
|
- return self.all_referenced_syms if refs_from_enclosing else self.referenced_syms
|
|
|
-
|
|
|
- def get_selected_symbols(self):
|
|
|
- """Returns the set() of all symbols X for which this symbol has a
|
|
|
- 'select X' or 'select X if Y' (regardless of whether Y is satisfied or
|
|
|
- not). This is a subset of the symbols returned by
|
|
|
- get_referenced_symbols()."""
|
|
|
- return self.selected_syms
|
|
|
-
|
|
|
- def get_help(self):
|
|
|
- """Returns the help text of the symbol, or None if the symbol has no
|
|
|
- help text."""
|
|
|
- return self.help
|
|
|
-
|
|
|
- def get_config(self):
|
|
|
- """Returns the Config instance this symbol is from."""
|
|
|
- return self.config
|
|
|
-
|
|
|
- def get_def_locations(self):
|
|
|
- """Returns a list of (filename, linenr) tuples, where filename (string)
|
|
|
- and linenr (int) represent a location where the symbol is defined. For
|
|
|
- the vast majority of symbols this list will only contain one element.
|
|
|
- For the following Kconfig, FOO would get two entries: the lines marked
|
|
|
- with *.
|
|
|
-
|
|
|
- config FOO *
|
|
|
- bool "foo prompt 1"
|
|
|
-
|
|
|
- config FOO *
|
|
|
- bool "foo prompt 2"
|
|
|
- """
|
|
|
- return self.def_locations
|
|
|
-
|
|
|
- def get_ref_locations(self):
|
|
|
- """Returns a list of (filename, linenr) tuples, where filename (string)
|
|
|
- and linenr (int) represent a location where the symbol is referenced in
|
|
|
- the configuration. For example, the lines marked by * would be included
|
|
|
- for FOO below:
|
|
|
-
|
|
|
- config A
|
|
|
- bool
|
|
|
- default BAR || FOO *
|
|
|
-
|
|
|
- config B
|
|
|
- tristate
|
|
|
- depends on FOO *
|
|
|
- default m if FOO *
|
|
|
-
|
|
|
- if FOO *
|
|
|
- config A
|
|
|
- bool "A"
|
|
|
- endif
|
|
|
-
|
|
|
- config FOO (definition not included)
|
|
|
- bool
|
|
|
- """
|
|
|
- return self.ref_locations
|
|
|
-
|
|
|
- def is_modifiable(self):
|
|
|
- """Returns True if the value of the symbol could be modified by calling
|
|
|
- Symbol.set_user_value().
|
|
|
-
|
|
|
- For bools and tristates, this corresponds to the symbol being visible
|
|
|
- in the 'make menuconfig' interface and not already being pinned to a
|
|
|
- specific value (e.g. because it is selected by another symbol).
|
|
|
-
|
|
|
- For strings and numbers, this corresponds to just being visible. (See
|
|
|
- Symbol.get_visibility().)"""
|
|
|
- if self.is_special_:
|
|
|
- return False
|
|
|
- if self.type == BOOL or self.type == TRISTATE:
|
|
|
- rev_dep = self.config._eval_expr(self.rev_dep)
|
|
|
- # A bool selected to "m" gets promoted to "y"
|
|
|
- if self.type == BOOL and rev_dep == "m":
|
|
|
- rev_dep = "y"
|
|
|
- return (tri_to_int[_get_visibility(self)] -
|
|
|
- tri_to_int[rev_dep]) > 0
|
|
|
- return _get_visibility(self) != "n"
|
|
|
-
|
|
|
- def is_defined(self):
|
|
|
- """Returns False if the symbol is referred to in the Kconfig but never
|
|
|
- actually defined."""
|
|
|
- return self.is_defined_
|
|
|
-
|
|
|
- def is_special(self):
|
|
|
- """Returns True if the symbol is one of the special symbols n, m, y, or
|
|
|
- UNAME_RELEASE, or gets its value from the environment."""
|
|
|
- return self.is_special_
|
|
|
-
|
|
|
- def is_from_environment(self):
|
|
|
- """Returns True if the symbol gets its value from the environment."""
|
|
|
- return self.is_from_env
|
|
|
-
|
|
|
- def has_ranges(self):
|
|
|
- """Returns True if the symbol is of type INT or HEX and has ranges that
|
|
|
- limit what values it can take on."""
|
|
|
- return self.ranges != []
|
|
|
-
|
|
|
- def is_choice_symbol(self):
|
|
|
- """Returns True if the symbol is in a choice statement and is an actual
|
|
|
- choice symbol (see Choice.get_symbols())."""
|
|
|
- return self.is_choice_symbol_
|
|
|
-
|
|
|
- def is_choice_selection(self):
|
|
|
- """Returns True if the symbol is contained in a choice statement and is
|
|
|
- the selected item. Equivalent to
|
|
|
- 'sym.is_choice_symbol() and sym.get_parent().get_selection() is sym'."""
|
|
|
- return self.is_choice_symbol_ and self.parent.get_selection() is self
|
|
|
-
|
|
|
- def is_allnoconfig_y(self):
|
|
|
- """Returns True if the symbol has the 'allnoconfig_y' option set."""
|
|
|
- return self.allnoconfig_y
|
|
|
-
|
|
|
- def __str__(self):
|
|
|
- """Returns a string containing various information about the symbol."""
|
|
|
- return self.config._get_sym_or_choice_str(self)
|
|
|
-
|
|
|
- #
|
|
|
- # Private methods
|
|
|
- #
|
|
|
-
|
|
|
- def __init__(self):
|
|
|
- """Symbol constructor -- not intended to be called directly by
|
|
|
- kconfiglib clients."""
|
|
|
-
|
|
|
- self.prompts = []
|
|
|
- self.cached_visibility = None
|
|
|
-
|
|
|
- self.config = None
|
|
|
-
|
|
|
- self.parent = None
|
|
|
- self.name = None
|
|
|
- self.type = UNKNOWN
|
|
|
-
|
|
|
- self.def_exprs = []
|
|
|
- self.ranges = []
|
|
|
- self.rev_dep = "n"
|
|
|
-
|
|
|
- # The prompt, default value and select conditions without any
|
|
|
- # dependencies from menus or if's propagated to them
|
|
|
-
|
|
|
- self.orig_prompts = []
|
|
|
- self.orig_def_exprs = []
|
|
|
- self.orig_selects = []
|
|
|
-
|
|
|
- # Dependencies inherited from containing menus and if's
|
|
|
- self.deps_from_containing = None
|
|
|
-
|
|
|
- self.help = None
|
|
|
-
|
|
|
- # The set of symbols referenced by this symbol (see
|
|
|
- # get_referenced_symbols())
|
|
|
- self.referenced_syms = set()
|
|
|
-
|
|
|
- # The set of symbols selected by this symbol (see
|
|
|
- # get_selected_symbols())
|
|
|
- self.selected_syms = set()
|
|
|
-
|
|
|
- # Like 'referenced_syms', but includes symbols from
|
|
|
- # dependencies inherited from enclosing menus and if's
|
|
|
- self.all_referenced_syms = set()
|
|
|
-
|
|
|
- # This is set to True for "actual" choice symbols. See
|
|
|
- # Choice._determine_actual_symbols(). The trailing underscore avoids a
|
|
|
- # collision with is_choice_symbol().
|
|
|
- self.is_choice_symbol_ = False
|
|
|
-
|
|
|
- # This records only dependencies specified with 'depends on'. Needed
|
|
|
- # when determining actual choice items (hrrrr...). See also
|
|
|
- # Choice._determine_actual_symbols().
|
|
|
- self.menu_dep = None
|
|
|
-
|
|
|
- # See Symbol.get_ref/def_locations().
|
|
|
- self.def_locations = []
|
|
|
- self.ref_locations = []
|
|
|
-
|
|
|
- self.user_val = None
|
|
|
-
|
|
|
- # Flags
|
|
|
-
|
|
|
- # Should the symbol get an entry in .config?
|
|
|
- self.write_to_conf = False
|
|
|
-
|
|
|
- # Caches the calculated value
|
|
|
- self.cached_val = None
|
|
|
-
|
|
|
- # Populated in Config._build_dep() after parsing. Links the symbol to
|
|
|
- # the symbols that immediately depend on it (in a caching/invalidation
|
|
|
- # sense). The total set of dependent symbols for the symbol (the
|
|
|
- # transitive closure) is calculated on an as-needed basis in
|
|
|
- # _get_dependent().
|
|
|
- self.dep = set()
|
|
|
-
|
|
|
- # Caches the total list of dependent symbols. Calculated in
|
|
|
- # _get_dependent().
|
|
|
- self.cached_deps = None
|
|
|
-
|
|
|
- # Does the symbol have an entry in the Kconfig file? The trailing
|
|
|
- # underscore avoids a collision with is_defined().
|
|
|
- self.is_defined_ = False
|
|
|
-
|
|
|
- # Does the symbol get its value in some special way, e.g. from the
|
|
|
- # environment or by being one of the special symbols n, m, and y? If
|
|
|
- # so, the value is stored in self.cached_val, which is never
|
|
|
- # invalidated. The trailing underscore avoids a collision with
|
|
|
- # is_special().
|
|
|
- self.is_special_ = False
|
|
|
-
|
|
|
- # Does the symbol get its value from the environment?
|
|
|
- self.is_from_env = False
|
|
|
-
|
|
|
- # Does the symbol have the 'allnoconfig_y' option set?
|
|
|
- self.allnoconfig_y = False
|
|
|
-
|
|
|
- def _invalidate(self):
|
|
|
- if self.is_special_:
|
|
|
- return
|
|
|
-
|
|
|
- if self.is_choice_symbol_:
|
|
|
- self.parent._invalidate()
|
|
|
-
|
|
|
- self.cached_val = None
|
|
|
- self.cached_visibility = None
|
|
|
- self.write_to_conf = False
|
|
|
-
|
|
|
- def _invalidate_dependent(self):
|
|
|
- for sym in self._get_dependent():
|
|
|
- sym._invalidate()
|
|
|
-
|
|
|
- def _set_user_value_no_invalidate(self, v, suppress_load_warnings):
|
|
|
- """Like set_user_value(), but does not invalidate any symbols.
|
|
|
-
|
|
|
- suppress_load_warnings --
|
|
|
- some warnings are annoying when loading a .config that can be helpful
|
|
|
- when manually invoking set_user_value(). This flag is set to True to
|
|
|
- suppress such warnings.
|
|
|
-
|
|
|
- Perhaps this could be made optional for load_config() instead."""
|
|
|
-
|
|
|
- if self.is_special_:
|
|
|
- if self.is_from_env:
|
|
|
- self.config._warn('attempt to assign the value "{0}" to the '
|
|
|
- 'symbol {1}, which gets its value from the '
|
|
|
- 'environment. Assignment ignored.'
|
|
|
- .format(v, self.name))
|
|
|
- else:
|
|
|
- self.config._warn('attempt to assign the value "{0}" to the '
|
|
|
- 'special symbol {1}. Assignment ignored.'
|
|
|
- .format(v, self.name))
|
|
|
- return
|
|
|
-
|
|
|
- if not self.is_defined_:
|
|
|
- filename, linenr = self.ref_locations[0]
|
|
|
- if self.config.print_undef_assign:
|
|
|
- _stderr_msg('note: attempt to assign the value "{0}" to {1}, '
|
|
|
- "which is referenced at {2}:{3} but never "
|
|
|
- "defined. Assignment ignored."
|
|
|
- .format(v, self.name, filename, linenr))
|
|
|
- return
|
|
|
-
|
|
|
- # Check if the value is valid for our type
|
|
|
- if not ((self.type == BOOL and (v == "y" or v == "n") ) or
|
|
|
- (self.type == TRISTATE and (v == "y" or v == "m" or
|
|
|
- v == "n") ) or
|
|
|
- (self.type == STRING ) or
|
|
|
- (self.type == INT and _is_base_n(v, 10) ) or
|
|
|
- (self.type == HEX and _is_base_n(v, 16) )):
|
|
|
- self.config._warn('the value "{0}" is invalid for {1}, which has type {2}. '
|
|
|
- "Assignment ignored."
|
|
|
- .format(v, self.name, typename[self.type]))
|
|
|
- return
|
|
|
-
|
|
|
- if self.prompts == [] and not suppress_load_warnings:
|
|
|
- self.config._warn('assigning "{0}" to the symbol {1} which '
|
|
|
- 'lacks prompts and thus has visibility "n". '
|
|
|
- 'The assignment will have no effect.'
|
|
|
- .format(v, self.name))
|
|
|
-
|
|
|
- self.user_val = v
|
|
|
-
|
|
|
- if self.is_choice_symbol_ and (self.type == BOOL or
|
|
|
- self.type == TRISTATE):
|
|
|
- choice = self.parent
|
|
|
- if v == "y":
|
|
|
- choice.user_val = self
|
|
|
- choice.user_mode = "y"
|
|
|
- elif v == "m":
|
|
|
- choice.user_val = None
|
|
|
- choice.user_mode = "m"
|
|
|
-
|
|
|
- def _unset_user_value_no_recursive_invalidate(self):
|
|
|
- self._invalidate()
|
|
|
- self.user_val = None
|
|
|
-
|
|
|
- if self.is_choice_symbol_:
|
|
|
- self.parent._unset_user_value()
|
|
|
-
|
|
|
- def _make_conf(self):
|
|
|
- if self.already_written:
|
|
|
- return []
|
|
|
-
|
|
|
- self.already_written = True
|
|
|
-
|
|
|
- # Note: write_to_conf is determined in get_value()
|
|
|
- val = self.get_value()
|
|
|
- if not self.write_to_conf:
|
|
|
- return []
|
|
|
-
|
|
|
- if self.type == BOOL or self.type == TRISTATE:
|
|
|
- if val == "m" or val == "y":
|
|
|
- return ["CONFIG_{0}={1}".format(self.name, val)]
|
|
|
- return ["# CONFIG_{0} is not set".format(self.name)]
|
|
|
-
|
|
|
- elif self.type == STRING:
|
|
|
- # Escape \ and "
|
|
|
- return ['CONFIG_{0}="{1}"'
|
|
|
- .format(self.name,
|
|
|
- val.replace("\\", "\\\\").replace('"', '\\"'))]
|
|
|
-
|
|
|
- elif self.type == INT or self.type == HEX:
|
|
|
- return ["CONFIG_{0}={1}".format(self.name, val)]
|
|
|
-
|
|
|
- else:
|
|
|
- _internal_error('Internal error while creating .config: unknown type "{0}".'
|
|
|
- .format(self.type))
|
|
|
-
|
|
|
- def _get_dependent(self):
|
|
|
- """Returns the set of symbols that should be invalidated if the value
|
|
|
- of the symbol changes, because they might be affected by the change.
|
|
|
- Note that this is an internal API -- it's probably of limited
|
|
|
- usefulness to clients."""
|
|
|
- if self.cached_deps is not None:
|
|
|
- return self.cached_deps
|
|
|
-
|
|
|
- res = set()
|
|
|
-
|
|
|
- self._add_dependent_ignore_siblings(res)
|
|
|
- if self.is_choice_symbol_:
|
|
|
- for s in self.parent.get_symbols():
|
|
|
- if s is not self:
|
|
|
- res.add(s)
|
|
|
- s._add_dependent_ignore_siblings(res)
|
|
|
-
|
|
|
- self.cached_deps = res
|
|
|
- return res
|
|
|
-
|
|
|
- def _add_dependent_ignore_siblings(self, to):
|
|
|
- """Calculating dependencies gets a bit tricky for choice items as they
|
|
|
- all depend on each other, potentially leading to infinite recursion.
|
|
|
- This helper function calculates dependencies ignoring the other symbols
|
|
|
- in the choice. It also works fine for symbols that are not choice
|
|
|
- items."""
|
|
|
- for s in self.dep:
|
|
|
- to.add(s)
|
|
|
- to |= s._get_dependent()
|
|
|
-
|
|
|
- def _has_auto_menu_dep_on(self, on):
|
|
|
- """See Choice._determine_actual_symbols()."""
|
|
|
- if not isinstance(self.parent, Choice):
|
|
|
- _internal_error("Attempt to determine auto menu dependency for symbol ouside of choice.")
|
|
|
-
|
|
|
- if self.prompts == []:
|
|
|
- # If we have no prompt, use the menu dependencies instead (what was
|
|
|
- # specified with 'depends on')
|
|
|
- return self.menu_dep is not None and \
|
|
|
- self.config._expr_depends_on(self.menu_dep, on)
|
|
|
-
|
|
|
- for _, cond_expr in self.prompts:
|
|
|
- if self.config._expr_depends_on(cond_expr, on):
|
|
|
- return True
|
|
|
-
|
|
|
- return False
|
|
|
-
|
|
|
-class Menu(Item):
|
|
|
-
|
|
|
- """Represents a menu statement."""
|
|
|
-
|
|
|
- #
|
|
|
- # Public interface
|
|
|
- #
|
|
|
-
|
|
|
- def get_config(self):
|
|
|
- """Return the Config instance this menu is from."""
|
|
|
- return self.config
|
|
|
-
|
|
|
- def get_visibility(self):
|
|
|
- """Returns the visibility of the menu. This also affects the visibility
|
|
|
- of subitems. See also Symbol.get_visibility()."""
|
|
|
- return self.config._eval_expr(self.dep_expr)
|
|
|
-
|
|
|
- def get_visible_if_visibility(self):
|
|
|
- """Returns the visibility the menu gets from its 'visible if'
|
|
|
- condition. "y" if the menu has no 'visible if' condition."""
|
|
|
- return self.config._eval_expr(self.visible_if_expr)
|
|
|
-
|
|
|
- def get_items(self, recursive = False):
|
|
|
- """Returns a list containing the items (symbols, menus, choice
|
|
|
- statements and comments) in in the menu, in the same order that the
|
|
|
- items appear within the menu.
|
|
|
-
|
|
|
- recursive (default: False) -- True if items contained in items within
|
|
|
- the menu should be included
|
|
|
- recursively (preorder)."""
|
|
|
-
|
|
|
- if not recursive:
|
|
|
- return self.block
|
|
|
-
|
|
|
- res = []
|
|
|
- for item in self.block:
|
|
|
- res.append(item)
|
|
|
- if isinstance(item, Menu):
|
|
|
- res.extend(item.get_items(True))
|
|
|
- elif isinstance(item, Choice):
|
|
|
- res.extend(item.get_items())
|
|
|
- return res
|
|
|
-
|
|
|
- def get_symbols(self, recursive = False):
|
|
|
- """Returns a list containing the symbols in the menu, in the same order
|
|
|
- that they appear within the menu.
|
|
|
-
|
|
|
- recursive (default: False) -- True if symbols contained in items within
|
|
|
- the menu should be included
|
|
|
- recursively."""
|
|
|
-
|
|
|
- return [item for item in self.get_items(recursive) if isinstance(item, Symbol)]
|
|
|
-
|
|
|
- def get_title(self):
|
|
|
- """Returns the title text of the menu."""
|
|
|
- return self.title
|
|
|
-
|
|
|
- def get_parent(self):
|
|
|
- """Returns the menu or choice statement that contains the menu, or
|
|
|
- None if the menu is at the top level. Note that if statements are
|
|
|
- treated as syntactic sugar and do not have an explicit class
|
|
|
- representation."""
|
|
|
- return self.parent
|
|
|
-
|
|
|
- def get_referenced_symbols(self, refs_from_enclosing = False):
|
|
|
- """See Symbol.get_referenced_symbols()."""
|
|
|
- return self.all_referenced_syms if refs_from_enclosing else self.referenced_syms
|
|
|
-
|
|
|
- def get_location(self):
|
|
|
- """Returns the location of the menu as a (filename, linenr) tuple,
|
|
|
- where filename is a string and linenr an int."""
|
|
|
- return (self.filename, self.linenr)
|
|
|
-
|
|
|
- def __str__(self):
|
|
|
- """Returns a string containing various information about the menu."""
|
|
|
- depends_on_str = self.config._expr_val_str(self.orig_deps,
|
|
|
- "(no dependencies)")
|
|
|
- visible_if_str = self.config._expr_val_str(self.visible_if_expr,
|
|
|
- "(no dependencies)")
|
|
|
-
|
|
|
- additional_deps_str = " " + self.config._expr_val_str(self.deps_from_containing,
|
|
|
- "(no additional dependencies)")
|
|
|
-
|
|
|
- return _sep_lines("Menu",
|
|
|
- "Title : " + self.title,
|
|
|
- "'depends on' dependencies : " + depends_on_str,
|
|
|
- "'visible if' dependencies : " + visible_if_str,
|
|
|
- "Additional dependencies from enclosing menus and if's:",
|
|
|
- additional_deps_str,
|
|
|
- "Location: {0}:{1}".format(self.filename, self.linenr))
|
|
|
-
|
|
|
- #
|
|
|
- # Private methods
|
|
|
- #
|
|
|
-
|
|
|
- def __init__(self):
|
|
|
- """Menu constructor -- not intended to be called directly by
|
|
|
- kconfiglib clients."""
|
|
|
-
|
|
|
- self.config = None
|
|
|
-
|
|
|
- self.parent = None
|
|
|
- self.title = None
|
|
|
- self.block = None
|
|
|
- self.dep_expr = None
|
|
|
-
|
|
|
- # Dependency expression without dependencies from enclosing menus and
|
|
|
- # if's propagated
|
|
|
- self.orig_deps = None
|
|
|
-
|
|
|
- # Dependencies inherited from containing menus and if's
|
|
|
- self.deps_from_containing = None
|
|
|
-
|
|
|
- # The 'visible if' expression
|
|
|
- self.visible_if_expr = None
|
|
|
-
|
|
|
- # The set of symbols referenced by this menu (see
|
|
|
- # get_referenced_symbols())
|
|
|
- self.referenced_syms = set()
|
|
|
-
|
|
|
- # Like 'referenced_syms', but includes symbols from
|
|
|
- # dependencies inherited from enclosing menus and if's
|
|
|
- self.all_referenced_syms = None
|
|
|
-
|
|
|
- self.filename = None
|
|
|
- self.linenr = None
|
|
|
-
|
|
|
- def _make_conf(self):
|
|
|
- item_conf = _make_block_conf(self.block)
|
|
|
-
|
|
|
- if self.config._eval_expr(self.dep_expr) != "n" and \
|
|
|
- self.config._eval_expr(self.visible_if_expr) != "n":
|
|
|
- return ["\n#\n# {0}\n#".format(self.title)] + item_conf
|
|
|
- return item_conf
|
|
|
-
|
|
|
-class Choice(Item):
|
|
|
-
|
|
|
- """Represents a choice statement. A choice can be in one of three modes:
|
|
|
-
|
|
|
- "n" - The choice is not visible and no symbols can be selected.
|
|
|
-
|
|
|
- "m" - Any number of symbols can be set to "m". The rest will be "n". This
|
|
|
- is safe since potentially conflicting options don't actually get
|
|
|
- compiled into the kernel simultaneously with "m".
|
|
|
-
|
|
|
- "y" - One symbol will be "y" while the rest are "n".
|
|
|
-
|
|
|
- Only tristate choices can be in "m" mode, and the visibility of the choice
|
|
|
- is an upper bound on the mode, so that e.g. a choice that depends on a
|
|
|
- symbol with value "m" will be in "m" mode.
|
|
|
-
|
|
|
- The mode changes automatically when a value is assigned to a symbol within
|
|
|
- the choice.
|
|
|
-
|
|
|
- See Symbol.get_visibility() too."""
|
|
|
-
|
|
|
- #
|
|
|
- # Public interface
|
|
|
- #
|
|
|
-
|
|
|
- def get_selection(self):
|
|
|
- """Returns the symbol selected (either by the user or through
|
|
|
- defaults), or None if either no symbol is selected or the mode is not
|
|
|
- "y"."""
|
|
|
- if self.cached_selection is not None:
|
|
|
- if self.cached_selection == NO_SELECTION:
|
|
|
- return None
|
|
|
- return self.cached_selection
|
|
|
-
|
|
|
- if self.get_mode() != "y":
|
|
|
- return self._cache_ret(None)
|
|
|
-
|
|
|
- # User choice available?
|
|
|
- if self.user_val is not None and _get_visibility(self.user_val) == "y":
|
|
|
- return self._cache_ret(self.user_val)
|
|
|
-
|
|
|
- if self.optional:
|
|
|
- return self._cache_ret(None)
|
|
|
-
|
|
|
- return self._cache_ret(self.get_selection_from_defaults())
|
|
|
-
|
|
|
- def get_selection_from_defaults(self):
|
|
|
- """Like Choice.get_selection(), but acts as if no symbol has been
|
|
|
- selected by the user and no 'optional' flag is in effect."""
|
|
|
-
|
|
|
- if self.actual_symbols == []:
|
|
|
- return None
|
|
|
-
|
|
|
- for symbol, cond_expr in self.def_exprs:
|
|
|
- if self.config._eval_expr(cond_expr) != "n":
|
|
|
- chosen_symbol = symbol
|
|
|
- break
|
|
|
- else:
|
|
|
- chosen_symbol = self.actual_symbols[0]
|
|
|
-
|
|
|
- # Is the chosen symbol visible?
|
|
|
- if _get_visibility(chosen_symbol) != "n":
|
|
|
- return chosen_symbol
|
|
|
- # Otherwise, pick the first visible symbol
|
|
|
- for sym in self.actual_symbols:
|
|
|
- if _get_visibility(sym) != "n":
|
|
|
- return sym
|
|
|
- return None
|
|
|
-
|
|
|
- def get_user_selection(self):
|
|
|
- """If the choice is in "y" mode and has a user-selected symbol, returns
|
|
|
- that symbol. Otherwise, returns None."""
|
|
|
- return self.user_val
|
|
|
-
|
|
|
- def get_config(self):
|
|
|
- """Returns the Config instance this choice is from."""
|
|
|
- return self.config
|
|
|
-
|
|
|
- def get_name(self):
|
|
|
- """For named choices, returns the name. Returns None for unnamed
|
|
|
- choices. No named choices appear anywhere in the kernel Kconfig files
|
|
|
- as of Linux 3.7.0-rc8."""
|
|
|
- return self.name
|
|
|
-
|
|
|
- def get_prompts(self):
|
|
|
- """Returns a list of prompts defined for the choice, in the order they
|
|
|
- appear in the configuration files. Returns the empty list for choices
|
|
|
- with no prompt.
|
|
|
-
|
|
|
- This list will have a single entry for the vast majority of choices
|
|
|
- having prompts, but having multiple prompts for a single choice is
|
|
|
- possible through having multiple 'choice' entries for it (though I'm
|
|
|
- not sure if that ever happens in practice)."""
|
|
|
- return [prompt for prompt, _ in self.orig_prompts]
|
|
|
-
|
|
|
- def get_help(self):
|
|
|
- """Returns the help text of the choice, or None if the choice has no
|
|
|
- help text."""
|
|
|
- return self.help
|
|
|
-
|
|
|
- def get_type(self):
|
|
|
- """Returns the type of the choice. See Symbol.get_type()."""
|
|
|
- return self.type
|
|
|
-
|
|
|
- def get_items(self):
|
|
|
- """Gets all items contained in the choice in the same order as within
|
|
|
- the configuration ("items" instead of "symbols" since choices and
|
|
|
- comments might appear within choices. This only happens in one place as
|
|
|
- of Linux 3.7.0-rc8, in drivers/usb/gadget/Kconfig)."""
|
|
|
- return self.block
|
|
|
-
|
|
|
- def get_symbols(self):
|
|
|
- """Returns a list containing the choice's symbols.
|
|
|
-
|
|
|
- A quirk (perhaps a bug) of Kconfig is that you can put items within a
|
|
|
- choice that will not be considered members of the choice insofar as
|
|
|
- selection is concerned. This happens for example if one symbol within a
|
|
|
- choice 'depends on' the symbol preceding it, or if you put non-symbol
|
|
|
- items within choices.
|
|
|
-
|
|
|
- As of Linux 3.7.0-rc8, this seems to be used intentionally in one
|
|
|
- place: drivers/usb/gadget/Kconfig.
|
|
|
-
|
|
|
- This function returns the "proper" symbols of the choice in the order
|
|
|
- they appear in the choice, excluding such items. If you want all items
|
|
|
- in the choice, use get_items()."""
|
|
|
- return self.actual_symbols
|
|
|
-
|
|
|
- def get_parent(self):
|
|
|
- """Returns the menu or choice statement that contains the choice, or
|
|
|
- None if the choice is at the top level. Note that if statements are
|
|
|
- treated as syntactic sugar and do not have an explicit class
|
|
|
- representation."""
|
|
|
- return self.parent
|
|
|
-
|
|
|
- def get_referenced_symbols(self, refs_from_enclosing = False):
|
|
|
- """See Symbol.get_referenced_symbols()."""
|
|
|
- return self.all_referenced_syms if refs_from_enclosing else self.referenced_syms
|
|
|
-
|
|
|
- def get_def_locations(self):
|
|
|
- """Returns a list of (filename, linenr) tuples, where filename (string)
|
|
|
- and linenr (int) represent a location where the choice is defined. For
|
|
|
- the vast majority of choices (all of them as of Linux 3.7.0-rc8) this
|
|
|
- list will only contain one element, but its possible for named choices
|
|
|
- to be defined in multiple locations."""
|
|
|
- return self.def_locations
|
|
|
-
|
|
|
- def get_visibility(self):
|
|
|
- """Returns the visibility of the choice statement: one of "n", "m" or
|
|
|
- "y". This acts as an upper limit on the mode of the choice (though bool
|
|
|
- choices can only have the mode "y"). See the class documentation for an
|
|
|
- explanation of modes."""
|
|
|
- return _get_visibility(self)
|
|
|
-
|
|
|
- def get_mode(self):
|
|
|
- """Returns the mode of the choice. See the class documentation for
|
|
|
- an explanation of modes."""
|
|
|
- minimum_mode = "n" if self.optional else "m"
|
|
|
- mode = self.user_mode if self.user_mode is not None else minimum_mode
|
|
|
- mode = self.config._eval_min(mode, _get_visibility(self))
|
|
|
-
|
|
|
- # Promote "m" to "y" for boolean choices
|
|
|
- if mode == "m" and self.type == BOOL:
|
|
|
- return "y"
|
|
|
-
|
|
|
- return mode
|
|
|
-
|
|
|
- def is_optional(self):
|
|
|
- """Returns True if the choice has the 'optional' flag set (and so will
|
|
|
- default to "n" mode)."""
|
|
|
- return self.optional
|
|
|
-
|
|
|
- def __str__(self):
|
|
|
- """Returns a string containing various information about the choice
|
|
|
- statement."""
|
|
|
- return self.config._get_sym_or_choice_str(self)
|
|
|
-
|
|
|
- #
|
|
|
- # Private methods
|
|
|
- #
|
|
|
-
|
|
|
- def __init__(self):
|
|
|
- """Choice constructor -- not intended to be called directly by
|
|
|
- kconfiglib clients."""
|
|
|
-
|
|
|
- self.prompts = []
|
|
|
- self.cached_visibility = None
|
|
|
-
|
|
|
- self.config = None
|
|
|
-
|
|
|
- self.parent = None
|
|
|
- self.name = None # Yes, choices can be named
|
|
|
- self.type = UNKNOWN
|
|
|
- self.def_exprs = []
|
|
|
- self.help = None
|
|
|
- self.optional = False
|
|
|
- self.block = None
|
|
|
-
|
|
|
- # The prompts and default values without any dependencies from
|
|
|
- # enclosing menus or if's propagated
|
|
|
-
|
|
|
- self.orig_prompts = []
|
|
|
- self.orig_def_exprs = []
|
|
|
-
|
|
|
- # Dependencies inherited from containing menus and if's
|
|
|
- self.deps_from_containing = None
|
|
|
-
|
|
|
- # We need to filter out symbols that appear within the choice block but
|
|
|
- # are not considered choice items (see
|
|
|
- # Choice._determine_actual_symbols()) This list holds the "actual" choice
|
|
|
- # items.
|
|
|
- self.actual_symbols = []
|
|
|
-
|
|
|
- # The set of symbols referenced by this choice (see
|
|
|
- # get_referenced_symbols())
|
|
|
- self.referenced_syms = set()
|
|
|
-
|
|
|
- # Like 'referenced_syms', but includes symbols from
|
|
|
- # dependencies inherited from enclosing menus and if's
|
|
|
- self.all_referenced_syms = set()
|
|
|
-
|
|
|
- # See Choice.get_def_locations()
|
|
|
- self.def_locations = []
|
|
|
-
|
|
|
- self.user_val = None
|
|
|
- self.user_mode = None
|
|
|
-
|
|
|
- self.cached_selection = None
|
|
|
-
|
|
|
- def _determine_actual_symbols(self):
|
|
|
- """If a symbol's visibility depends on the preceding symbol within a
|
|
|
- choice, it is no longer viewed as a choice item. (This is quite
|
|
|
- possibly a bug, but some things consciously use it... ugh. It stems
|
|
|
- from automatic submenu creation.) In addition, it's possible to have
|
|
|
- choices and comments within choices, and those shouldn't be considered
|
|
|
- choice items either. Only drivers/usb/gadget/Kconfig seems to depend on
|
|
|
- any of this. This method computes the "actual" items in the choice and
|
|
|
- sets the is_choice_symbol_ flag on them (retrieved via
|
|
|
- is_choice_symbol()).
|
|
|
-
|
|
|
- Don't let this scare you: an earlier version simply checked for a
|
|
|
- sequence of symbols where all symbols after the first appeared in the
|
|
|
- 'depends on' expression of the first, and that worked fine. The added
|
|
|
- complexity is to be future-proof in the event that
|
|
|
- drivers/usb/gadget/Kconfig turns even more sinister. It might very well
|
|
|
- be overkilling things (especially if that file is refactored ;)."""
|
|
|
-
|
|
|
- # Items might depend on each other in a tree structure, so we need a
|
|
|
- # stack to keep track of the current tentative parent
|
|
|
- stack = []
|
|
|
-
|
|
|
- for item in self.block:
|
|
|
- if not isinstance(item, Symbol):
|
|
|
- stack = []
|
|
|
- continue
|
|
|
-
|
|
|
- while stack != []:
|
|
|
- if item._has_auto_menu_dep_on(stack[-1]):
|
|
|
- # The item should not be viewed as a choice item, so don't
|
|
|
- # set item.is_choice_symbol_.
|
|
|
- stack.append(item)
|
|
|
- break
|
|
|
- else:
|
|
|
- stack.pop()
|
|
|
- else:
|
|
|
- item.is_choice_symbol_ = True
|
|
|
- self.actual_symbols.append(item)
|
|
|
- stack.append(item)
|
|
|
-
|
|
|
- def _cache_ret(self, selection):
|
|
|
- # As None is used to indicate the lack of a cached value we can't use
|
|
|
- # that to cache the fact that the choice has no selection. Instead, we
|
|
|
- # use the symbolic constant NO_SELECTION.
|
|
|
- if selection is None:
|
|
|
- self.cached_selection = NO_SELECTION
|
|
|
- else:
|
|
|
- self.cached_selection = selection
|
|
|
-
|
|
|
- return selection
|
|
|
-
|
|
|
- def _invalidate(self):
|
|
|
- self.cached_selection = None
|
|
|
- self.cached_visibility = None
|
|
|
-
|
|
|
- def _unset_user_value(self):
|
|
|
- self._invalidate()
|
|
|
- self.user_val = None
|
|
|
- self.user_mode = None
|
|
|
-
|
|
|
- def _make_conf(self):
|
|
|
- return _make_block_conf(self.block)
|
|
|
-
|
|
|
-class Comment(Item):
|
|
|
-
|
|
|
- """Represents a comment statement."""
|
|
|
-
|
|
|
- #
|
|
|
- # Public interface
|
|
|
- #
|
|
|
-
|
|
|
- def get_config(self):
|
|
|
- """Returns the Config instance this comment is from."""
|
|
|
- return self.config
|
|
|
-
|
|
|
- def get_visibility(self):
|
|
|
- """Returns the visibility of the comment. See also
|
|
|
- Symbol.get_visibility()."""
|
|
|
- return self.config._eval_expr(self.dep_expr)
|
|
|
-
|
|
|
- def get_text(self):
|
|
|
- """Returns the text of the comment."""
|
|
|
- return self.text
|
|
|
-
|
|
|
- def get_parent(self):
|
|
|
- """Returns the menu or choice statement that contains the comment, or
|
|
|
- None if the comment is at the top level. Note that if statements are
|
|
|
- treated as syntactic sugar and do not have an explicit class
|
|
|
- representation."""
|
|
|
- return self.parent
|
|
|
-
|
|
|
- def get_referenced_symbols(self, refs_from_enclosing = False):
|
|
|
- """See Symbol.get_referenced_symbols()."""
|
|
|
- return self.all_referenced_syms if refs_from_enclosing else self.referenced_syms
|
|
|
-
|
|
|
- def get_location(self):
|
|
|
- """Returns the location of the comment as a (filename, linenr) tuple,
|
|
|
- where filename is a string and linenr an int."""
|
|
|
- return (self.filename, self.linenr)
|
|
|
-
|
|
|
- def __str__(self):
|
|
|
- """Returns a string containing various information about the comment."""
|
|
|
- dep_str = self.config._expr_val_str(self.orig_deps, "(no dependencies)")
|
|
|
-
|
|
|
- additional_deps_str = " " + self.config._expr_val_str(self.deps_from_containing,
|
|
|
- "(no additional dependencies)")
|
|
|
-
|
|
|
- return _sep_lines("Comment",
|
|
|
- "Text: " + str(self.text),
|
|
|
- "Dependencies: " + dep_str,
|
|
|
- "Additional dependencies from enclosing menus and if's:",
|
|
|
- additional_deps_str,
|
|
|
- "Location: {0}:{1}".format(self.filename, self.linenr))
|
|
|
-
|
|
|
- #
|
|
|
- # Private methods
|
|
|
- #
|
|
|
-
|
|
|
- def __init__(self):
|
|
|
- """Comment constructor -- not intended to be called directly by
|
|
|
- kconfiglib clients."""
|
|
|
-
|
|
|
- self.config = None
|
|
|
-
|
|
|
- self.parent = None
|
|
|
- self.text = None
|
|
|
- self.dep_expr = None
|
|
|
-
|
|
|
- # Dependency expression without dependencies from enclosing menus and
|
|
|
- # if's propagated
|
|
|
- self.orig_deps = None
|
|
|
-
|
|
|
- # Dependencies inherited from containing menus and if's
|
|
|
- self.deps_from_containing = None
|
|
|
-
|
|
|
- # The set of symbols referenced by this comment (see
|
|
|
- # get_referenced_symbols())
|
|
|
- self.referenced_syms = set()
|
|
|
-
|
|
|
- # Like 'referenced_syms', but includes symbols from
|
|
|
- # dependencies inherited from enclosing menus and if's
|
|
|
- self.all_referenced_syms = None
|
|
|
-
|
|
|
- self.filename = None
|
|
|
- self.linenr = None
|
|
|
-
|
|
|
- def _make_conf(self):
|
|
|
- if self.config._eval_expr(self.dep_expr) != "n":
|
|
|
- return ["\n#\n# {0}\n#".format(self.text)]
|
|
|
- return []
|
|
|
-
|
|
|
-class Kconfig_Syntax_Error(Exception):
|
|
|
- """Exception raised for syntax errors."""
|
|
|
- pass
|
|
|
-
|
|
|
-class Internal_Error(Exception):
|
|
|
- """Exception raised for internal errors."""
|
|
|
- pass
|
|
|
-
|
|
|
-#
|
|
|
-# Public functions
|
|
|
-#
|
|
|
-
|
|
|
-def tri_less(v1, v2):
|
|
|
- """Returns True if the tristate v1 is less than the tristate v2, where "n",
|
|
|
- "m" and "y" are ordered from lowest to highest."""
|
|
|
- return tri_to_int[v1] < tri_to_int[v2]
|
|
|
-
|
|
|
-def tri_less_eq(v1, v2):
|
|
|
- """Returns True if the tristate v1 is less than or equal to the tristate
|
|
|
- v2, where "n", "m" and "y" are ordered from lowest to highest."""
|
|
|
- return tri_to_int[v1] <= tri_to_int[v2]
|
|
|
-
|
|
|
-def tri_greater(v1, v2):
|
|
|
- """Returns True if the tristate v1 is greater than the tristate v2, where
|
|
|
- "n", "m" and "y" are ordered from lowest to highest."""
|
|
|
- return tri_to_int[v1] > tri_to_int[v2]
|
|
|
-
|
|
|
-def tri_greater_eq(v1, v2):
|
|
|
- """Returns True if the tristate v1 is greater than or equal to the tristate
|
|
|
- v2, where "n", "m" and "y" are ordered from lowest to highest."""
|
|
|
- return tri_to_int[v1] >= tri_to_int[v2]
|
|
|
-
|
|
|
-#
|
|
|
-# Internal classes
|
|
|
-#
|
|
|
-
|
|
|
-class _Feed(object):
|
|
|
-
|
|
|
- """Class for working with sequences in a stream-like fashion; handy for tokens."""
|
|
|
-
|
|
|
- def __init__(self, items):
|
|
|
- self.items = items
|
|
|
- self.length = len(self.items)
|
|
|
- self.i = 0
|
|
|
-
|
|
|
- def get_next(self):
|
|
|
- if self.i >= self.length:
|
|
|
- return None
|
|
|
-
|
|
|
- item = self.items[self.i]
|
|
|
- self.i += 1
|
|
|
- return item
|
|
|
-
|
|
|
- def peek_next(self):
|
|
|
- return None if self.i >= self.length else self.items[self.i]
|
|
|
-
|
|
|
- def check(self, token):
|
|
|
- """Check if the next token is 'token'. If so, remove it from the token
|
|
|
- feed and return True. Otherwise, leave it in and return False."""
|
|
|
- if self.i < self.length and self.items[self.i] == token:
|
|
|
- self.i += 1
|
|
|
- return True
|
|
|
- return False
|
|
|
-
|
|
|
- def go_back(self):
|
|
|
- if self.i <= 0:
|
|
|
- _internal_error("Attempt to move back in Feed while already at the beginning.")
|
|
|
- self.i -= 1
|
|
|
-
|
|
|
- def go_to_start(self):
|
|
|
- self.i = 0
|
|
|
-
|
|
|
- def __len__(self):
|
|
|
- return self.length
|
|
|
-
|
|
|
-class _FileFeed(_Feed):
|
|
|
-
|
|
|
- """_Feed subclass that feeds lines from a file. Joins any line ending in
|
|
|
- \\ with the following line. Keeps track of the filename and current line
|
|
|
- number."""
|
|
|
-
|
|
|
- def __init__(self, filename):
|
|
|
- self.filename = _clean_up_path(filename)
|
|
|
- _Feed.__init__(self, _get_lines(filename))
|
|
|
-
|
|
|
- def remove_blank(self):
|
|
|
- """Removes lines until the first non-blank (not all-space) line."""
|
|
|
- while self.i < self.length and self.items[self.i].isspace():
|
|
|
- self.i += 1
|
|
|
-
|
|
|
- def get_filename(self):
|
|
|
- return self.filename
|
|
|
-
|
|
|
- def get_linenr(self):
|
|
|
- return self.i
|
|
|
-
|
|
|
-#
|
|
|
-# Internal functions
|
|
|
-#
|
|
|
-
|
|
|
-def _get_visibility(sc):
|
|
|
- """Symbols and Choices have a "visibility" that acts as an upper bound on
|
|
|
- the values a user can set for them, corresponding to the visibility in e.g.
|
|
|
- 'make menuconfig'. This function calculates the visibility for the Symbol
|
|
|
- or Choice 'sc' -- the logic is nearly identical."""
|
|
|
- if sc.cached_visibility is None:
|
|
|
- vis = "n"
|
|
|
- for _, cond_expr in sc.prompts:
|
|
|
- vis = sc.config._eval_max(vis, cond_expr)
|
|
|
-
|
|
|
- if isinstance(sc, Symbol) and sc.is_choice_symbol_:
|
|
|
- vis = sc.config._eval_min(vis, _get_visibility(sc.parent))
|
|
|
-
|
|
|
- # Promote "m" to "y" if we're dealing with a non-tristate
|
|
|
- if vis == "m" and sc.type != TRISTATE:
|
|
|
- vis = "y"
|
|
|
-
|
|
|
- sc.cached_visibility = vis
|
|
|
-
|
|
|
- return sc.cached_visibility
|
|
|
-
|
|
|
-def _make_and(e1, e2):
|
|
|
- """Constructs an AND (&&) expression. Performs trivial simplification.
|
|
|
- Nones equate to 'y'.
|
|
|
-
|
|
|
- Note: returns None if e1 == e2 == None."""
|
|
|
- if e1 == "n" or e2 == "n":
|
|
|
- return "n"
|
|
|
- if e1 is None or e1 == "y":
|
|
|
- return e2
|
|
|
- if e2 is None or e2 == "y":
|
|
|
- return e1
|
|
|
-
|
|
|
- # Prefer to merge/update argument list if possible instead of creating
|
|
|
- # a new AND node
|
|
|
-
|
|
|
- if isinstance(e1, tuple) and e1[0] == AND:
|
|
|
- if isinstance(e2, tuple) and e2[0] == AND:
|
|
|
- return (AND, e1[1] + e2[1])
|
|
|
- return (AND, e1[1] + [e2])
|
|
|
-
|
|
|
- if isinstance(e2, tuple) and e2[0] == AND:
|
|
|
- return (AND, e2[1] + [e1])
|
|
|
-
|
|
|
- return (AND, [e1, e2])
|
|
|
-
|
|
|
-def _make_or(e1, e2):
|
|
|
- """Constructs an OR (||) expression. Performs trivial simplification and
|
|
|
- avoids Nones. Nones equate to 'y', which is usually what we want, but needs
|
|
|
- to be kept in mind."""
|
|
|
-
|
|
|
- # Perform trivial simplification and avoid None's (which
|
|
|
- # correspond to y's)
|
|
|
- if e1 is None or e2 is None or e1 == "y" or e2 == "y":
|
|
|
- return "y"
|
|
|
- if e1 == "n":
|
|
|
- return e2
|
|
|
- if e2 == "n":
|
|
|
- return e1
|
|
|
-
|
|
|
- # Prefer to merge/update argument list if possible instead of creating
|
|
|
- # a new OR node
|
|
|
-
|
|
|
- if isinstance(e1, tuple) and e1[0] == OR:
|
|
|
- if isinstance(e2, tuple) and e2[0] == OR:
|
|
|
- return (OR, e1[1] + e2[1])
|
|
|
- return (OR, e1[1] + [e2])
|
|
|
-
|
|
|
- if isinstance(e2, tuple) and e2[0] == OR:
|
|
|
- return (OR, e2[1] + [e1])
|
|
|
-
|
|
|
- return (OR, [e1, e2])
|
|
|
-
|
|
|
-def _get_expr_syms(expr):
|
|
|
- """Returns the set() of symbols appearing in expr."""
|
|
|
- res = set()
|
|
|
- if expr is None:
|
|
|
- return res
|
|
|
-
|
|
|
- def rec(expr):
|
|
|
- if isinstance(expr, Symbol):
|
|
|
- res.add(expr)
|
|
|
- return
|
|
|
- if isinstance(expr, str):
|
|
|
- return
|
|
|
-
|
|
|
- e0 = expr[0]
|
|
|
- if e0 == AND or e0 == OR:
|
|
|
- for term in expr[1]:
|
|
|
- rec(term)
|
|
|
- elif e0 == NOT:
|
|
|
- rec(expr[1])
|
|
|
- elif e0 == EQUAL or e0 == UNEQUAL:
|
|
|
- _, v1, v2 = expr
|
|
|
- if isinstance(v1, Symbol):
|
|
|
- res.add(v1)
|
|
|
- if isinstance(v2, Symbol):
|
|
|
- res.add(v2)
|
|
|
- else:
|
|
|
- _internal_error("Internal error while fetching symbols from an "
|
|
|
- "expression with token stream {0}.".format(expr))
|
|
|
-
|
|
|
- rec(expr)
|
|
|
- return res
|
|
|
-
|
|
|
-def _str_val(obj):
|
|
|
- """Returns the value of obj as a string. If obj is not a string (constant
|
|
|
- symbol), it must be a Symbol."""
|
|
|
- return obj if isinstance(obj, str) else obj.get_value()
|
|
|
-
|
|
|
-def _make_block_conf(block):
|
|
|
- """Returns a list of .config strings for a block (list) of items."""
|
|
|
-
|
|
|
- # Collect the substrings in a list and later use join() instead of += to
|
|
|
- # build the final .config contents. With older Python versions, this yields
|
|
|
- # linear instead of quadratic complexity.
|
|
|
- strings = []
|
|
|
- for item in block:
|
|
|
- strings.extend(item._make_conf())
|
|
|
- return strings
|
|
|
-
|
|
|
-def _sym_str_string(sym_or_str):
|
|
|
- if isinstance(sym_or_str, str):
|
|
|
- return '"' + sym_or_str + '"'
|
|
|
- return sym_or_str.name
|
|
|
-
|
|
|
-def _intersperse(lst, op):
|
|
|
- """_expr_to_str() helper. Gets the string representation of each expression in lst
|
|
|
- and produces a list where op has been inserted between the elements."""
|
|
|
- if lst == []:
|
|
|
- return ""
|
|
|
-
|
|
|
- res = []
|
|
|
-
|
|
|
- def handle_sub_expr(expr):
|
|
|
- no_parens = isinstance(expr, (str, Symbol)) or \
|
|
|
- expr[0] in (EQUAL, UNEQUAL) or \
|
|
|
- precedence[op] <= precedence[expr[0]]
|
|
|
- if not no_parens:
|
|
|
- res.append("(")
|
|
|
- res.extend(_expr_to_str_rec(expr))
|
|
|
- if not no_parens:
|
|
|
- res.append(")")
|
|
|
-
|
|
|
- op_str = op_to_str[op]
|
|
|
-
|
|
|
- handle_sub_expr(lst[0])
|
|
|
- for expr in lst[1:]:
|
|
|
- res.append(op_str)
|
|
|
- handle_sub_expr(expr)
|
|
|
-
|
|
|
- return res
|
|
|
-
|
|
|
-def _expr_to_str_rec(expr):
|
|
|
- if expr is None:
|
|
|
- return [""]
|
|
|
-
|
|
|
- if isinstance(expr, (Symbol, str)):
|
|
|
- return [_sym_str_string(expr)]
|
|
|
-
|
|
|
- e0 = expr[0]
|
|
|
-
|
|
|
- if e0 == AND or e0 == OR:
|
|
|
- return _intersperse(expr[1], expr[0])
|
|
|
-
|
|
|
- if e0 == NOT:
|
|
|
- need_parens = not isinstance(expr[1], (str, Symbol))
|
|
|
-
|
|
|
- res = ["!"]
|
|
|
- if need_parens:
|
|
|
- res.append("(")
|
|
|
- res.extend(_expr_to_str_rec(expr[1]))
|
|
|
- if need_parens:
|
|
|
- res.append(")")
|
|
|
- return res
|
|
|
-
|
|
|
- if e0 == EQUAL or e0 == UNEQUAL:
|
|
|
- return [_sym_str_string(expr[1]),
|
|
|
- op_to_str[expr[0]],
|
|
|
- _sym_str_string(expr[2])]
|
|
|
-
|
|
|
-def _expr_to_str(expr):
|
|
|
- return "".join(_expr_to_str_rec(expr))
|
|
|
-
|
|
|
-def _indentation(line):
|
|
|
- """Returns the length of the line's leading whitespace, treating tab stops
|
|
|
- as being spaced 8 characters apart."""
|
|
|
- line = line.expandtabs()
|
|
|
- return len(line) - len(line.lstrip())
|
|
|
-
|
|
|
-def _deindent(line, indent):
|
|
|
- """Deindent 'line' by 'indent' spaces."""
|
|
|
- line = line.expandtabs()
|
|
|
- if len(line) <= indent:
|
|
|
- return line
|
|
|
- return line[indent:]
|
|
|
-
|
|
|
-def _is_base_n(s, n):
|
|
|
- try:
|
|
|
- int(s, n)
|
|
|
- return True
|
|
|
- except ValueError:
|
|
|
- return False
|
|
|
-
|
|
|
-def _sep_lines(*args):
|
|
|
- """Returns a string comprised of all arguments, with newlines inserted
|
|
|
- between them."""
|
|
|
- return "\n".join(args)
|
|
|
-
|
|
|
-def _comment(s):
|
|
|
- """Returns a new string with "#" inserted before each line in 's'."""
|
|
|
- if not s:
|
|
|
- return "#"
|
|
|
- res = "".join(["#" + line for line in s.splitlines(True)])
|
|
|
- if s.endswith("\n"):
|
|
|
- return res + "#"
|
|
|
- return res
|
|
|
-
|
|
|
-def _get_lines(filename):
|
|
|
- """Returns a list of lines from 'filename', joining any line ending in \\
|
|
|
- with the following line."""
|
|
|
- with open(filename, "r") as f:
|
|
|
- lines = []
|
|
|
- accum = ""
|
|
|
- for line in f:
|
|
|
- if line.endswith("\\\n"):
|
|
|
- accum += line[:-2]
|
|
|
- else:
|
|
|
- lines.append(accum + line)
|
|
|
- accum = ""
|
|
|
- return lines
|
|
|
-
|
|
|
-def _clean_up_path(path):
|
|
|
- """Strips an initial "./" and any trailing slashes from 'path'."""
|
|
|
- if path.startswith("./"):
|
|
|
- path = path[2:]
|
|
|
- return path.rstrip("/")
|
|
|
-
|
|
|
-def _stderr_msg(msg, filename, linenr):
|
|
|
- if filename is not None:
|
|
|
- sys.stderr.write("{0}:{1}: ".format(_clean_up_path(filename), linenr))
|
|
|
- sys.stderr.write(msg + "\n")
|
|
|
-
|
|
|
-def _tokenization_error(s, filename, linenr):
|
|
|
- loc = "" if filename is None else "{0}:{1}: ".format(filename, linenr)
|
|
|
- raise Kconfig_Syntax_Error("{0}Couldn't tokenize '{1}'"
|
|
|
- .format(loc, s.strip()))
|
|
|
-
|
|
|
-def _parse_error(s, msg, filename, linenr):
|
|
|
- loc = "" if filename is None else "{0}:{1}: ".format(filename, linenr)
|
|
|
- raise Kconfig_Syntax_Error("{0}Couldn't parse '{1}'{2}"
|
|
|
- .format(loc, s.strip(),
|
|
|
- "." if msg is None else ": " + msg))
|
|
|
-
|
|
|
-def _internal_error(msg):
|
|
|
- raise Internal_Error(msg +
|
|
|
- "\nSorry! You may want to send an email to ulfalizer a.t Google's " \
|
|
|
- "email service to tell me about this. Include the message above " \
|
|
|
- "and the stack trace and describe what you were doing.")
|
|
|
-
|
|
|
-#
|
|
|
-# Internal global constants
|
|
|
-#
|
|
|
-
|
|
|
-# Tokens
|
|
|
-(T_AND, T_OR, T_NOT,
|
|
|
- T_OPEN_PAREN, T_CLOSE_PAREN,
|
|
|
- T_EQUAL, T_UNEQUAL,
|
|
|
- T_MAINMENU, T_MENU, T_ENDMENU,
|
|
|
- T_SOURCE, T_CHOICE, T_ENDCHOICE,
|
|
|
- T_COMMENT, T_CONFIG, T_MENUCONFIG,
|
|
|
- T_HELP, T_IF, T_ENDIF, T_DEPENDS, T_ON,
|
|
|
- T_OPTIONAL, T_PROMPT, T_DEFAULT,
|
|
|
- T_BOOL, T_TRISTATE, T_HEX, T_INT, T_STRING,
|
|
|
- T_DEF_BOOL, T_DEF_TRISTATE,
|
|
|
- T_SELECT, T_RANGE, T_OPTION, T_ALLNOCONFIG_Y, T_ENV,
|
|
|
- T_DEFCONFIG_LIST, T_MODULES, T_VISIBLE) = range(39)
|
|
|
-
|
|
|
-# The leading underscore before the function assignments below prevent pydoc
|
|
|
-# from listing them. The constants could be hidden too, but they're fairly
|
|
|
-# obviously internal anyway, so don't bother spamming the code.
|
|
|
-
|
|
|
-# Keyword to token map. Note that the get() method is assigned directly as a
|
|
|
-# small optimization.
|
|
|
-_get_keyword = { "mainmenu" : T_MAINMENU,
|
|
|
- "menu" : T_MENU,
|
|
|
- "endmenu" : T_ENDMENU,
|
|
|
- "endif" : T_ENDIF,
|
|
|
- "endchoice" : T_ENDCHOICE,
|
|
|
- "source" : T_SOURCE,
|
|
|
- "choice" : T_CHOICE,
|
|
|
- "config" : T_CONFIG,
|
|
|
- "comment" : T_COMMENT,
|
|
|
- "menuconfig" : T_MENUCONFIG,
|
|
|
- "help" : T_HELP,
|
|
|
- "if" : T_IF,
|
|
|
- "depends" : T_DEPENDS,
|
|
|
- "on" : T_ON,
|
|
|
- "optional" : T_OPTIONAL,
|
|
|
- "prompt" : T_PROMPT,
|
|
|
- "default" : T_DEFAULT,
|
|
|
- "bool" : T_BOOL,
|
|
|
- "boolean" : T_BOOL,
|
|
|
- "tristate" : T_TRISTATE,
|
|
|
- "int" : T_INT,
|
|
|
- "hex" : T_HEX,
|
|
|
- "def_bool" : T_DEF_BOOL,
|
|
|
- "def_tristate" : T_DEF_TRISTATE,
|
|
|
- "string" : T_STRING,
|
|
|
- "select" : T_SELECT,
|
|
|
- "range" : T_RANGE,
|
|
|
- "option" : T_OPTION,
|
|
|
- "allnoconfig_y" : T_ALLNOCONFIG_Y,
|
|
|
- "env" : T_ENV,
|
|
|
- "defconfig_list" : T_DEFCONFIG_LIST,
|
|
|
- "modules" : T_MODULES,
|
|
|
- "visible" : T_VISIBLE }.get
|
|
|
-
|
|
|
-# Strings to use for True and False
|
|
|
-bool_str = { False : "false", True : "true" }
|
|
|
-
|
|
|
-# Tokens after which identifier-like lexemes are treated as strings. T_CHOICE
|
|
|
-# is included to avoid symbols being registered for named choices.
|
|
|
-string_lex = frozenset((T_BOOL, T_TRISTATE, T_INT, T_HEX, T_STRING, T_CHOICE,
|
|
|
- T_PROMPT, T_MENU, T_COMMENT, T_SOURCE, T_MAINMENU))
|
|
|
-
|
|
|
-# Matches the initial token on a line; see _tokenize().
|
|
|
-_initial_token_re_match = re.compile(r"[^\w]*(\w+)").match
|
|
|
-
|
|
|
-# Matches an identifier/keyword optionally preceded by whitespace
|
|
|
-_id_keyword_re_match = re.compile(r"\s*([\w./-]+)").match
|
|
|
-
|
|
|
-# Regular expressions for parsing .config files
|
|
|
-_set_re_match = re.compile(r"CONFIG_(\w+)=(.*)").match
|
|
|
-_unset_re_match = re.compile(r"# CONFIG_(\w+) is not set").match
|
|
|
-
|
|
|
-# Regular expression for finding $-references to symbols in strings
|
|
|
-_sym_ref_re_search = re.compile(r"\$[A-Za-z0-9_]+").search
|
|
|
-
|
|
|
-# Integers representing symbol types
|
|
|
-UNKNOWN, BOOL, TRISTATE, STRING, HEX, INT = range(6)
|
|
|
-
|
|
|
-# Strings to use for types
|
|
|
-typename = { UNKNOWN : "unknown", BOOL : "bool", TRISTATE : "tristate",
|
|
|
- STRING : "string", HEX : "hex", INT : "int" }
|
|
|
-
|
|
|
-# Token to type mapping
|
|
|
-token_to_type = { T_BOOL : BOOL, T_TRISTATE : TRISTATE, T_STRING : STRING,
|
|
|
- T_INT : INT, T_HEX : HEX }
|
|
|
-
|
|
|
-# Default values for symbols of different types (the value the symbol gets if
|
|
|
-# it is not assigned a user value and none of its 'default' clauses kick in)
|
|
|
-default_value = { BOOL : "n", TRISTATE : "n", STRING : "", INT : "", HEX : "" }
|
|
|
-
|
|
|
-# Indicates that no item is selected in a choice statement
|
|
|
-NO_SELECTION = 0
|
|
|
-
|
|
|
-# Integers representing expression types
|
|
|
-AND, OR, NOT, EQUAL, UNEQUAL = range(5)
|
|
|
-
|
|
|
-# Map from tristate values to integers
|
|
|
-tri_to_int = { "n" : 0, "m" : 1, "y" : 2 }
|
|
|
-
|
|
|
-# Printing-related stuff
|
|
|
-
|
|
|
-op_to_str = { AND : " && ", OR : " || ", EQUAL : " = ", UNEQUAL : " != " }
|
|
|
-precedence = { OR : 0, AND : 1, NOT : 2 }
|