1 files changed, 0 insertions, 1258 deletions
diff --git a/3rdParty/SCons/scons-2.4.0/engine/SCons/Action.py b/3rdParty/SCons/scons-2.4.0/engine/SCons/Action.py
deleted file mode 100644
index 7acde46..0000000
--- a/3rdParty/SCons/scons-2.4.0/engine/SCons/Action.py
+++ /dev/null
@@ -1,1258 +0,0 @@
-"""SCons.Action
-
-This encapsulates information about executing any sort of action that
-can build one or more target Nodes (typically files) from one or more
-source Nodes (also typically files) given a specific Environment.
-
-The base class here is ActionBase.  The base class supplies just a few
-OO utility methods and some generic methods for displaying information
-about an Action in response to the various commands that control printing.
-
-A second-level base class is _ActionAction.  This extends ActionBase
-by providing the methods that can be used to show and perform an
-action.  True Action objects will subclass _ActionAction; Action
-factory class objects will subclass ActionBase.
-
-The heavy lifting is handled by subclasses for the different types of
-actions we might execute:
-
-    CommandAction
-    CommandGeneratorAction
-    FunctionAction
-    ListAction
-
-The subclasses supply the following public interface methods used by
-other modules:
-
-    __call__()
-        THE public interface, "calling" an Action object executes the
-        command or Python function.  This also takes care of printing
-        a pre-substitution command for debugging purposes.
-
-    get_contents()
-        Fetches the "contents" of an Action for signature calculation
-        plus the varlist.  This is what gets MD5 checksummed to decide
-        if a target needs to be rebuilt because its action changed.
-
-    genstring()
-        Returns a string representation of the Action *without*
-        command substitution, but allows a CommandGeneratorAction to
-        generate the right action based on the specified target,
-        source and env.  This is used by the Signature subsystem
-        (through the Executor) to obtain an (imprecise) representation
-        of the Action operation for informative purposes.
-
-
-Subclasses also supply the following methods for internal use within
-this module:
-
-    __str__()
-        Returns a string approximation of the Action; no variable
-        substitution is performed.
-
-    execute()
-        The internal method that really, truly, actually handles the
-        execution of a command or Python function.  This is used so
-        that the __call__() methods can take care of displaying any
-        pre-substitution representations, and *then* execute an action
-        without worrying about the specific Actions involved.
-
-    get_presig()
-        Fetches the "contents" of a subclass for signature calculation.
-        The varlist is added to this to produce the Action's contents.
-
-    strfunction()
-        Returns a substituted string representation of the Action.
-        This is used by the _ActionAction.show() command to display the
-        command/function that will be executed to generate the target(s).
-
-There is a related independent ActionCaller class that looks like a
-regular Action, and which serves as a wrapper for arbitrary functions
-that we want to let the user specify the arguments to now, but actually
-execute later (when an out-of-date check determines that it's needed to
-be executed, for example).  Objects of this class are returned by an
-ActionFactory class that provides a __call__() method as a convenient
-way for wrapping up the functions.
-
-"""
-
-# Copyright (c) 2001 - 2015 The SCons Foundation
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be included
-# in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
-# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
-# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-__revision__ = "src/engine/SCons/Action.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
-
-import dis
-import os
-# compat layer imports "cPickle" for us if it's available.
-import pickle
-import re
-import sys
-import subprocess
-
-import SCons.Debug
-from SCons.Debug import logInstanceCreation
-import SCons.Errors
-import SCons.Util
-import SCons.Subst
-
-# we use these a lot, so try to optimize them
-is_String = SCons.Util.is_String
-is_List = SCons.Util.is_List
-
-class _null(object):
-    pass
-
-print_actions = 1
-execute_actions = 1
-print_actions_presub = 0
-
-def rfile(n):
-    try:
-        return n.rfile()
-    except AttributeError:
-        return n
-
-def default_exitstatfunc(s):
-    return s
-
-try:
-    SET_LINENO = dis.SET_LINENO
-    HAVE_ARGUMENT = dis.HAVE_ARGUMENT
-except AttributeError:
-    remove_set_lineno_codes = lambda x: x
-else:
-    def remove_set_lineno_codes(code):
-        result = []
-        n = len(code)
-        i = 0
-        while i < n:
-            c = code[i]
-            op = ord(c)
-            if op >= HAVE_ARGUMENT:
-                if op != SET_LINENO:
-                    result.append(code[i:i+3])
-                i = i+3
-            else:
-                result.append(c)
-                i = i+1
-        return ''.join(result)
-
-strip_quotes = re.compile('^[\'"](.*)[\'"]$')
-
-
-def _callable_contents(obj):
-    """Return the signature contents of a callable Python object.
-    """
-    try:
-        # Test if obj is a method.
-        return _function_contents(obj.im_func)
-
-    except AttributeError:
-        try:
-            # Test if obj is a callable object.
-            return _function_contents(obj.__call__.im_func)
-
-        except AttributeError:
-            try:
-                # Test if obj is a code object.
-                return _code_contents(obj)
-
-            except AttributeError:
-                    # Test if obj is a function object.
-                    return _function_contents(obj)
-
-
-def _object_contents(obj):
-    """Return the signature contents of any Python object.
-
-    We have to handle the case where object contains a code object
-    since it can be pickled directly.
-    """
-    try:
-        # Test if obj is a method.
-        return _function_contents(obj.im_func)
-
-    except AttributeError:
-        try:
-            # Test if obj is a callable object.
-            return _function_contents(obj.__call__.im_func)
-
-        except AttributeError:
-            try:
-                # Test if obj is a code object.
-                return _code_contents(obj)
-
-            except AttributeError:
-                try:
-                    # Test if obj is a function object.
-                    return _function_contents(obj)
-
-                except AttributeError:
-                    # Should be a pickable Python object.
-                    try:
-                        return pickle.dumps(obj)
-                    except (pickle.PicklingError, TypeError):
-                        # This is weird, but it seems that nested classes
-                        # are unpickable. The Python docs say it should
-                        # always be a PicklingError, but some Python
-                        # versions seem to return TypeError.  Just do
-                        # the best we can.
-                        return str(obj)
-
-
-def _code_contents(code):
-    """Return the signature contents of a code object.
-
-    By providing direct access to the code object of the
-    function, Python makes this extremely easy.  Hooray!
-
-    Unfortunately, older versions of Python include line
-    number indications in the compiled byte code.  Boo!
-    So we remove the line number byte codes to prevent
-    recompilations from moving a Python function.
-    """
-
-    contents = []
-
-    # The code contents depends on the number of local variables
-    # but not their actual names.
-    contents.append("%s,%s" % (code.co_argcount, len(code.co_varnames)))
-    try:
-        contents.append(",%s,%s" % (len(code.co_cellvars), len(code.co_freevars)))
-    except AttributeError:
-        # Older versions of Python do not support closures.
-        contents.append(",0,0")
-
-    # The code contents depends on any constants accessed by the
-    # function. Note that we have to call _object_contents on each
-    # constants because the code object of nested functions can
-    # show-up among the constants.
-    #
-    # Note that we also always ignore the first entry of co_consts
-    # which contains the function doc string. We assume that the
-    # function does not access its doc string.
-    contents.append(',(' + ','.join(map(_object_contents,code.co_consts[1:])) + ')')
-
-    # The code contents depends on the variable names used to
-    # accessed global variable, as changing the variable name changes
-    # the variable actually accessed and therefore changes the
-    # function result.
-    contents.append(',(' + ','.join(map(_object_contents,code.co_names)) + ')')
-
-
-    # The code contents depends on its actual code!!!
-    contents.append(',(' + str(remove_set_lineno_codes(code.co_code)) + ')')
-
-    return ''.join(contents)
-
-
-def _function_contents(func):
-    """Return the signature contents of a function."""
-
-    contents = [_code_contents(func.func_code)]
-
-    # The function contents depends on the value of defaults arguments
-    if func.func_defaults:
-        contents.append(',(' + ','.join(map(_object_contents,func.func_defaults)) + ')')
-    else:
-        contents.append(',()')
-
-    # The function contents depends on the closure captured cell values.
-    try:
-        closure = func.func_closure or []
-    except AttributeError:
-        # Older versions of Python do not support closures.
-        closure = []
-
-    #xxx = [_object_contents(x.cell_contents) for x in closure]
-    try:
-        xxx = [_object_contents(x.cell_contents) for x in closure]
-    except AttributeError:
-        xxx = []
-    contents.append(',(' + ','.join(xxx) + ')')
-
-    return ''.join(contents)
-
-
-def _actionAppend(act1, act2):
-    # This function knows how to slap two actions together.
-    # Mainly, it handles ListActions by concatenating into
-    # a single ListAction.
-    a1 = Action(act1)
-    a2 = Action(act2)
-    if a1 is None:
-        return a2
-    if a2 is None:
-        return a1
-    if isinstance(a1, ListAction):
-        if isinstance(a2, ListAction):
-            return ListAction(a1.list + a2.list)
-        else:
-            return ListAction(a1.list + [ a2 ])
-    else:
-        if isinstance(a2, ListAction):
-            return ListAction([ a1 ] + a2.list)
-        else:
-            return ListAction([ a1, a2 ])
-
-def _do_create_keywords(args, kw):
-    """This converts any arguments after the action argument into
-    their equivalent keywords and adds them to the kw argument.
-    """
-    v = kw.get('varlist', ())
-    # prevent varlist="FOO" from being interpreted as ['F', 'O', 'O']
-    if is_String(v): v = (v,)
-    kw['varlist'] = tuple(v)
-    if args:
-        # turn positional args into equivalent keywords
-        cmdstrfunc = args[0]
-        if cmdstrfunc is None or is_String(cmdstrfunc):
-            kw['cmdstr'] = cmdstrfunc
-        elif callable(cmdstrfunc):
-            kw['strfunction'] = cmdstrfunc
-        else:
-            raise SCons.Errors.UserError(
-                'Invalid command display variable type. '
-                'You must either pass a string or a callback which '
-                'accepts (target, source, env) as parameters.')
-        if len(args) > 1:
-            kw['varlist'] = tuple(SCons.Util.flatten(args[1:])) + kw['varlist']
-    if kw.get('strfunction', _null) is not _null \
-                      and kw.get('cmdstr', _null) is not _null:
-        raise SCons.Errors.UserError(
-            'Cannot have both strfunction and cmdstr args to Action()')
-
-def _do_create_action(act, kw):
-    """This is the actual "implementation" for the
-    Action factory method, below.  This handles the
-    fact that passing lists to Action() itself has
-    different semantics than passing lists as elements
-    of lists.
-
-    The former will create a ListAction, the latter
-    will create a CommandAction by converting the inner
-    list elements to strings."""
-
-    if isinstance(act, ActionBase):
-        return act
-
-    if is_String(act):
-        var=SCons.Util.get_environment_var(act)
-        if var:
-            # This looks like a string that is purely an Environment
-            # variable reference, like "$FOO" or "${FOO}".  We do
-            # something special here...we lazily evaluate the contents
-            # of that Environment variable, so a user could put something
-            # like a function or a CommandGenerator in that variable
-            # instead of a string.
-            return LazyAction(var, kw)
-        commands = str(act).split('\n')
-        if len(commands) == 1:
-            return CommandAction(commands[0], **kw)
-        # The list of string commands may include a LazyAction, so we
-        # reprocess them via _do_create_list_action.
-        return _do_create_list_action(commands, kw)
-    
-    if is_List(act):
-        return CommandAction(act, **kw)
-
-    if callable(act):
-        try:
-            gen = kw['generator']
-            del kw['generator']
-        except KeyError:
-            gen = 0
-        if gen:
-            action_type = CommandGeneratorAction
-        else:
-            action_type = FunctionAction
-        return action_type(act, kw)
-
-    # Catch a common error case with a nice message:
-    if isinstance(act, int) or isinstance(act, float):
-        raise TypeError("Don't know how to create an Action from a number (%s)"%act)
-    # Else fail silently (???)
-    return None
-
-def _do_create_list_action(act, kw):
-    """A factory for list actions.  Convert the input list into Actions
-    and then wrap them in a ListAction."""
-    acts = []
-    for a in act:
-        aa = _do_create_action(a, kw)
-        if aa is not None: acts.append(aa)
-    if not acts:
-        return ListAction([])
-    elif len(acts) == 1:
-        return acts[0]
-    else:
-        return ListAction(acts)
-
-def Action(act, *args, **kw):
-    """A factory for action objects."""
-    # Really simple: the _do_create_* routines do the heavy lifting.
-    _do_create_keywords(args, kw)
-    if is_List(act):
-        return _do_create_list_action(act, kw)
-    return _do_create_action(act, kw)
-
-class ActionBase(object):
-    """Base class for all types of action objects that can be held by
-    other objects (Builders, Executors, etc.)  This provides the
-    common methods for manipulating and combining those actions."""
-
-    def __cmp__(self, other):
-        return cmp(self.__dict__, other)
-
-    def no_batch_key(self, env, target, source):
-        return None
-
-    batch_key = no_batch_key
-
-    def genstring(self, target, source, env):
-        return str(self)
-
-    def get_contents(self, target, source, env):
-        result = [ self.get_presig(target, source, env) ]
-        # This should never happen, as the Action() factory should wrap
-        # the varlist, but just in case an action is created directly,
-        # we duplicate this check here.
-        vl = self.get_varlist(target, source, env)
-        if is_String(vl): vl = (vl,)
-        for v in vl:
-            # do the subst this way to ignore $(...$) parts:
-            result.append(env.subst_target_source('${'+v+'}', SCons.Subst.SUBST_SIG, target, source))
-        return ''.join(result)
-
-    def __add__(self, other):
-        return _actionAppend(self, other)
-
-    def __radd__(self, other):
-        return _actionAppend(other, self)
-
-    def presub_lines(self, env):
-        # CommandGeneratorAction needs a real environment
-        # in order to return the proper string here, since
-        # it may call LazyAction, which looks up a key
-        # in that env.  So we temporarily remember the env here,
-        # and CommandGeneratorAction will use this env
-        # when it calls its _generate method.
-        self.presub_env = env
-        lines = str(self).split('\n')
-        self.presub_env = None      # don't need this any more
-        return lines
-
-    def get_varlist(self, target, source, env, executor=None):
-        return self.varlist
-
-    def get_targets(self, env, executor):
-        """
-        Returns the type of targets ($TARGETS, $CHANGED_TARGETS) used
-        by this action.
-        """
-        return self.targets
-
-class _ActionAction(ActionBase):
-    """Base class for actions that create output objects."""
-    def __init__(self, cmdstr=_null, strfunction=_null, varlist=(),
-                       presub=_null, chdir=None, exitstatfunc=None,
-                       batch_key=None, targets='$TARGETS',
-                 **kw):
-        self.cmdstr = cmdstr
-        if strfunction is not _null:
-            if strfunction is None:
-                self.cmdstr = None
-            else:
-                self.strfunction = strfunction
-        self.varlist = varlist
-        self.presub = presub
-        self.chdir = chdir
-        if not exitstatfunc:
-            exitstatfunc = default_exitstatfunc
-        self.exitstatfunc = exitstatfunc
-
-        self.targets = targets
-
-        if batch_key:
-            if not callable(batch_key):
-                # They have set batch_key, but not to their own
-                # callable.  The default behavior here will batch
-                # *all* targets+sources using this action, separated
-                # for each construction environment.
-                def default_batch_key(self, env, target, source):
-                    return (id(self), id(env))
-                batch_key = default_batch_key
-            SCons.Util.AddMethod(self, batch_key, 'batch_key')
-
-    def print_cmd_line(self, s, target, source, env):
-        # In python 3, and in some of our tests, sys.stdout is
-        # a String io object, and it takes unicode strings only
-        # In other cases it's a regular Python 2.x file object
-        # which takes strings (bytes), and if you pass those a
-        # unicode object they try to decode with 'ascii' codec
-        # which fails if the cmd line has any hi-bit-set chars.
-        # This code assumes s is a regular string, but should
-        # work if it's unicode too.
-        try:
-            sys.stdout.write(unicode(s + "\n"))
-        except UnicodeDecodeError:
-            sys.stdout.write(s + "\n")
-
-    def __call__(self, target, source, env,
-                               exitstatfunc=_null,
-                               presub=_null,
-                               show=_null,
-                               execute=_null,
-                               chdir=_null,
-                               executor=None):
-        if not is_List(target):
-            target = [target]
-        if not is_List(source):
-            source = [source]
-
-        if presub is _null:
-            presub = self.presub
-            if presub is _null:
-                presub = print_actions_presub
-        if exitstatfunc is _null: exitstatfunc = self.exitstatfunc
-        if show is _null:  show = print_actions
-        if execute is _null:  execute = execute_actions
-        if chdir is _null: chdir = self.chdir
-        save_cwd = None
-        if chdir:
-            save_cwd = os.getcwd()
-            try:
-                chdir = str(chdir.get_abspath())
-            except AttributeError:
-                if not is_String(chdir):
-                    if executor:
-                        chdir = str(executor.batches[0].targets[0].dir)
-                    else:
-                        chdir = str(target[0].dir)
-        if presub:
-            if executor:
-                target = executor.get_all_targets()
-                source = executor.get_all_sources()
-            t = ' and '.join(map(str, target))
-            l = '\n  '.join(self.presub_lines(env))
-            out = u"Building %s with action:\n  %s\n" % (t, l)
-            sys.stdout.write(out)
-        cmd = None
-        if show and self.strfunction:
-            if executor:
-                target = executor.get_all_targets()
-                source = executor.get_all_sources()
-            try:
-                cmd = self.strfunction(target, source, env, executor)
-            except TypeError:
-                cmd = self.strfunction(target, source, env)
-            if cmd:
-                if chdir:
-                    cmd = ('os.chdir(%s)\n' % repr(chdir)) + cmd
-                try:
-                    get = env.get
-                except AttributeError:
-                    print_func = self.print_cmd_line
-                else:
-                    print_func = get('PRINT_CMD_LINE_FUNC')
-                    if not print_func:
-                        print_func = self.print_cmd_line
-                print_func(cmd, target, source, env)
-        stat = 0
-        if execute:
-            if chdir:
-                os.chdir(chdir)
-            try:
-                stat = self.execute(target, source, env, executor=executor)
-                if isinstance(stat, SCons.Errors.BuildError):
-                    s = exitstatfunc(stat.status)
-                    if s:
-                        stat.status = s
-                    else:
-                        stat = s
-                else:
-                    stat = exitstatfunc(stat)
-            finally:
-                if save_cwd:
-                    os.chdir(save_cwd)
-        if cmd and save_cwd:
-            print_func('os.chdir(%s)' % repr(save_cwd), target, source, env)
-
-        return stat
-
-
-def _string_from_cmd_list(cmd_list):
-    """Takes a list of command line arguments and returns a pretty
-    representation for printing."""
-    cl = []
-    for arg in map(str, cmd_list):
-        if ' ' in arg or '\t' in arg:
-            arg = '"' + arg + '"'
-        cl.append(arg)
-    return ' '.join(cl)
-
-# A fiddlin' little function that has an 'import SCons.Environment' which
-# can't be moved to the top level without creating an import loop.  Since
-# this import creates a local variable named 'SCons', it blocks access to
-# the global variable, so we move it here to prevent complaints about local
-# variables being used uninitialized.
-default_ENV = None
-def get_default_ENV(env):
-    global default_ENV
-    try:
-        return env['ENV']
-    except KeyError:
-        if not default_ENV:
-            import SCons.Environment
-            # This is a hideously expensive way to get a default shell
-            # environment.  What it really should do is run the platform
-            # setup to get the default ENV.  Fortunately, it's incredibly
-            # rare for an Environment not to have a shell environment, so
-            # we're not going to worry about it overmuch.
-            default_ENV = SCons.Environment.Environment()['ENV']
-        return default_ENV
-
-# This function is still in draft mode.  We're going to need something like
-# it in the long run as more and more places use subprocess, but I'm sure
-# it'll have to be tweaked to get the full desired functionality.
-# one special arg (so far?), 'error', to tell what to do with exceptions.
-def _subproc(scons_env, cmd, error = 'ignore', **kw):
-    """Do common setup for a subprocess.Popen() call"""
-    # allow std{in,out,err} to be "'devnull'"
-    io = kw.get('stdin')
-    if is_String(io) and io == 'devnull':
-        kw['stdin'] = open(os.devnull)
-    io = kw.get('stdout')
-    if is_String(io) and io == 'devnull':
-        kw['stdout'] = open(os.devnull, 'w')
-    io = kw.get('stderr')
-    if is_String(io) and io == 'devnull':
-        kw['stderr'] = open(os.devnull, 'w')
-
-    # Figure out what shell environment to use
-    ENV = kw.get('env', None)
-    if ENV is None: ENV = get_default_ENV(scons_env)
-
-    # Ensure that the ENV values are all strings:
-    new_env = {}
-    for key, value in ENV.items():
-        if is_List(value):
-            # If the value is a list, then we assume it is a path list,
-            # because that's a pretty common list-like value to stick
-            # in an environment variable:
-            value = SCons.Util.flatten_sequence(value)
-            new_env[key] = os.pathsep.join(map(str, value))
-        else:
-            # It's either a string or something else.  If it's a string,
-            # we still want to call str() because it might be a *Unicode*
-            # string, which makes subprocess.Popen() gag.  If it isn't a
-            # string or a list, then we just coerce it to a string, which
-            # is the proper way to handle Dir and File instances and will
-            # produce something reasonable for just about everything else:
-            new_env[key] = str(value)
-    kw['env'] = new_env
-
-    try:
-        return subprocess.Popen(cmd, **kw)
-    except EnvironmentError, e:
-        if error == 'raise': raise
-        # return a dummy Popen instance that only returns error
-        class dummyPopen(object):
-            def __init__(self, e): self.exception = e
-            def communicate(self,input=None): return ('','')
-            def wait(self): return -self.exception.errno
-            stdin = None
-            class f(object):
-                def read(self): return ''
-                def readline(self): return ''
-                def __iter__(self): return iter(())
-            stdout = stderr = f()
-        return dummyPopen(e)
-
-class CommandAction(_ActionAction):
-    """Class for command-execution actions."""
-    def __init__(self, cmd, **kw):
-        # Cmd can actually be a list or a single item; if it's a
-        # single item it should be the command string to execute; if a
-        # list then it should be the words of the command string to
-        # execute.  Only a single command should be executed by this
-        # object; lists of commands should be handled by embedding
-        # these objects in a ListAction object (which the Action()
-        # factory above does).  cmd will be passed to
-        # Environment.subst_list() for substituting environment
-        # variables.
-        if SCons.Debug.track_instances: logInstanceCreation(self, 'Action.CommandAction')
-
-        _ActionAction.__init__(self, **kw)
-        if is_List(cmd):
-            if list(filter(is_List, cmd)):
-                raise TypeError("CommandAction should be given only " \
-                      "a single command")
-        self.cmd_list = cmd
-
-    def __str__(self):
-        if is_List(self.cmd_list):
-            return ' '.join(map(str, self.cmd_list))
-        return str(self.cmd_list)
-
-    def process(self, target, source, env, executor=None):
-        if executor:
-            result = env.subst_list(self.cmd_list, 0, executor=executor)
-        else:
-            result = env.subst_list(self.cmd_list, 0, target, source)
-        silent = None
-        ignore = None
-        while True:
-            try: c = result[0][0][0]
-            except IndexError: c = None
-            if c == '@': silent = 1
-            elif c == '-': ignore = 1
-            else: break
-            result[0][0] = result[0][0][1:]
-        try:
-            if not result[0][0]:
-                result[0] = result[0][1:]
-        except IndexError:
-            pass
-        return result, ignore, silent
-
-    def strfunction(self, target, source, env, executor=None):
-        if self.cmdstr is None:
-            return None
-        if self.cmdstr is not _null:
-            from SCons.Subst import SUBST_RAW
-            if executor:
-                c = env.subst(self.cmdstr, SUBST_RAW, executor=executor)
-            else:
-                c = env.subst(self.cmdstr, SUBST_RAW, target, source)
-            if c:
-                return c
-        cmd_list, ignore, silent = self.process(target, source, env, executor)
-        if silent:
-            return ''
-        return _string_from_cmd_list(cmd_list[0])
-
-    def execute(self, target, source, env, executor=None):
-        """Execute a command action.
-
-        This will handle lists of commands as well as individual commands,
-        because construction variable substitution may turn a single
-        "command" into a list.  This means that this class can actually
-        handle lists of commands, even though that's not how we use it
-        externally.
-        """
-        escape_list = SCons.Subst.escape_list
-        flatten_sequence = SCons.Util.flatten_sequence
-
-        try:
-            shell = env['SHELL']
-        except KeyError:
-            raise SCons.Errors.UserError('Missing SHELL construction variable.')
-
-        try:
-            spawn = env['SPAWN']
-        except KeyError:
-            raise SCons.Errors.UserError('Missing SPAWN construction variable.')
-        else:
-            if is_String(spawn):
-                spawn = env.subst(spawn, raw=1, conv=lambda x: x)
-
-        escape = env.get('ESCAPE', lambda x: x)
-
-        ENV = get_default_ENV(env)
-
-        # Ensure that the ENV values are all strings:
-        for key, value in ENV.items():
-            if not is_String(value):
-                if is_List(value):
-                    # If the value is a list, then we assume it is a
-                    # path list, because that's a pretty common list-like
-                    # value to stick in an environment variable:
-                    value = flatten_sequence(value)
-                    ENV[key] = os.pathsep.join(map(str, value))
-                else:
-                    # If it isn't a string or a list, then we just coerce
-                    # it to a string, which is the proper way to handle
-                    # Dir and File instances and will produce something
-                    # reasonable for just about everything else:
-                    ENV[key] = str(value)
-
-        if executor:
-            target = executor.get_all_targets()
-            source = executor.get_all_sources()
-        cmd_list, ignore, silent = self.process(target, list(map(rfile, source)), env, executor)
-
-        # Use len() to filter out any "command" that's zero-length.
-        for cmd_line in filter(len, cmd_list):
-            # Escape the command line for the interpreter we are using.
-            cmd_line = escape_list(cmd_line, escape)
-            result = spawn(shell, escape, cmd_line[0], cmd_line, ENV)
-            if not ignore and result:
-                msg = "Error %s" % result
-                return SCons.Errors.BuildError(errstr=msg,
-                                               status=result,
-                                               action=self,
-                                               command=cmd_line)
-        return 0
-
-    def get_presig(self, target, source, env, executor=None):
-        """Return the signature contents of this action's command line.
-
-        This strips $(-$) and everything in between the string,
-        since those parts don't affect signatures.
-        """
-        from SCons.Subst import SUBST_SIG
-        cmd = self.cmd_list
-        if is_List(cmd):
-            cmd = ' '.join(map(str, cmd))
-        else:
-            cmd = str(cmd)
-        if executor:
-            return env.subst_target_source(cmd, SUBST_SIG, executor=executor)
-        else:
-            return env.subst_target_source(cmd, SUBST_SIG, target, source)
-
-    def get_implicit_deps(self, target, source, env, executor=None):
-        icd = env.get('IMPLICIT_COMMAND_DEPENDENCIES', True)
-        if is_String(icd) and icd[:1] == '$':
-            icd = env.subst(icd)
-        if not icd or icd in ('0', 'None'):
-            return []
-        from SCons.Subst import SUBST_SIG
-        if executor:
-            cmd_list = env.subst_list(self.cmd_list, SUBST_SIG, executor=executor)
-        else:
-            cmd_list = env.subst_list(self.cmd_list, SUBST_SIG, target, source)
-        res = []
-        for cmd_line in cmd_list:
-            if cmd_line:
-                d = str(cmd_line[0])
-                m = strip_quotes.match(d)
-                if m:
-                    d = m.group(1)
-                d = env.WhereIs(d)
-                if d:
-                    res.append(env.fs.File(d))
-        return res
-
-class CommandGeneratorAction(ActionBase):
-    """Class for command-generator actions."""
-    def __init__(self, generator, kw):
-        if SCons.Debug.track_instances: logInstanceCreation(self, 'Action.CommandGeneratorAction')
-        self.generator = generator
-        self.gen_kw = kw
-        self.varlist = kw.get('varlist', ())
-        self.targets = kw.get('targets', '$TARGETS')
-
-    def _generate(self, target, source, env, for_signature, executor=None):
-        # ensure that target is a list, to make it easier to write
-        # generator functions:
-        if not is_List(target):
-            target = [target]
-
-        if executor:
-            target = executor.get_all_targets()
-            source = executor.get_all_sources()
-        ret = self.generator(target=target,
-                             source=source,
-                             env=env,
-                             for_signature=for_signature)
-        gen_cmd = Action(ret, **self.gen_kw)
-        if not gen_cmd:
-            raise SCons.Errors.UserError("Object returned from command generator: %s cannot be used to create an Action." % repr(ret))
-        return gen_cmd
-
-    def __str__(self):
-        try:
-            env = self.presub_env
-        except AttributeError:
-            env = None
-        if env is None:
-            env = SCons.Defaults.DefaultEnvironment()
-        act = self._generate([], [], env, 1)
-        return str(act)
-
-    def batch_key(self, env, target, source):
-        return self._generate(target, source, env, 1).batch_key(env, target, source)
-
-    def genstring(self, target, source, env, executor=None):
-        return self._generate(target, source, env, 1, executor).genstring(target, source, env)
-
-    def __call__(self, target, source, env, exitstatfunc=_null, presub=_null,
-                 show=_null, execute=_null, chdir=_null, executor=None):
-        act = self._generate(target, source, env, 0, executor)
-        if act is None:
-            raise SCons.Errors.UserError("While building `%s': "
-                            "Cannot deduce file extension from source files: %s"
-                % (repr(list(map(str, target))), repr(list(map(str, source)))))
-        return act(target, source, env, exitstatfunc, presub,
-                   show, execute, chdir, executor)
-
-    def get_presig(self, target, source, env, executor=None):
-        """Return the signature contents of this action's command line.
-
-        This strips $(-$) and everything in between the string,
-        since those parts don't affect signatures.
-        """
-        return self._generate(target, source, env, 1, executor).get_presig(target, source, env)
-
-    def get_implicit_deps(self, target, source, env, executor=None):
-        return self._generate(target, source, env, 1, executor).get_implicit_deps(target, source, env)
-
-    def get_varlist(self, target, source, env, executor=None):
-        return self._generate(target, source, env, 1, executor).get_varlist(target, source, env, executor)
-
-    def get_targets(self, env, executor):
-        return self._generate(None, None, env, 1, executor).get_targets(env, executor)
-
-
-
-# A LazyAction is a kind of hybrid generator and command action for
-# strings of the form "$VAR".  These strings normally expand to other
-# strings (think "$CCCOM" to "$CC -c -o $TARGET $SOURCE"), but we also
-# want to be able to replace them with functions in the construction
-# environment.  Consequently, we want lazy evaluation and creation of
-# an Action in the case of the function, but that's overkill in the more
-# normal case of expansion to other strings.
-#
-# So we do this with a subclass that's both a generator *and*
-# a command action.  The overridden methods all do a quick check
-# of the construction variable, and if it's a string we just call
-# the corresponding CommandAction method to do the heavy lifting.
-# If not, then we call the same-named CommandGeneratorAction method.
-# The CommandGeneratorAction methods work by using the overridden
-# _generate() method, that is, our own way of handling "generation" of
-# an action based on what's in the construction variable.
-
-class LazyAction(CommandGeneratorAction, CommandAction):
-
-    def __init__(self, var, kw):
-        if SCons.Debug.track_instances: logInstanceCreation(self, 'Action.LazyAction')
-        #FUTURE CommandAction.__init__(self, '${'+var+'}', **kw)
-        CommandAction.__init__(self, '${'+var+'}', **kw)
-        self.var = SCons.Util.to_String(var)
-        self.gen_kw = kw
-
-    def get_parent_class(self, env):
-        c = env.get(self.var)
-        if is_String(c) and not '\n' in c:
-            return CommandAction
-        return CommandGeneratorAction
-
-    def _generate_cache(self, env):
-        if env:
-            c = env.get(self.var, '')
-        else:
-            c = ''
-        gen_cmd = Action(c, **self.gen_kw)
-        if not gen_cmd:
-            raise SCons.Errors.UserError("$%s value %s cannot be used to create an Action." % (self.var, repr(c)))
-        return gen_cmd
-
-    def _generate(self, target, source, env, for_signature, executor=None):
-        return self._generate_cache(env)
-
-    def __call__(self, target, source, env, *args, **kw):
-        c = self.get_parent_class(env)
-        return c.__call__(self, target, source, env, *args, **kw)
-
-    def get_presig(self, target, source, env):
-        c = self.get_parent_class(env)
-        return c.get_presig(self, target, source, env)
-
-    def get_varlist(self, target, source, env, executor=None):
-        c = self.get_parent_class(env)
-        return c.get_varlist(self, target, source, env, executor)
-
-
-class FunctionAction(_ActionAction):
-    """Class for Python function actions."""
-
-    def __init__(self, execfunction, kw):
-        if SCons.Debug.track_instances: logInstanceCreation(self, 'Action.FunctionAction')
-
-        self.execfunction = execfunction
-        try:
-            self.funccontents = _callable_contents(execfunction)
-        except AttributeError:
-            try:
-                # See if execfunction will do the heavy lifting for us.
-                self.gc = execfunction.get_contents
-            except AttributeError:
-                # This is weird, just do the best we can.
-                self.funccontents = _object_contents(execfunction)
-
-        _ActionAction.__init__(self, **kw)
-
-    def function_name(self):
-        try:
-            return self.execfunction.__name__
-        except AttributeError:
-            try:
-                return self.execfunction.__class__.__name__
-            except AttributeError:
-                return "unknown_python_function"
-
-    def strfunction(self, target, source, env, executor=None):
-        if self.cmdstr is None:
-            return None
-        if self.cmdstr is not _null:
-            from SCons.Subst import SUBST_RAW
-            if executor:
-                c = env.subst(self.cmdstr, SUBST_RAW, executor=executor)
-            else:
-                c = env.subst(self.cmdstr, SUBST_RAW, target, source)
-            if c:
-                return c
-        def array(a):
-            def quote(s):
-                try:
-                    str_for_display = s.str_for_display
-                except AttributeError:
-                    s = repr(s)
-                else:
-                    s = str_for_display()
-                return s
-            return '[' + ", ".join(map(quote, a)) + ']'
-        try:
-            strfunc = self.execfunction.strfunction
-        except AttributeError:
-            pass
-        else:
-            if strfunc is None:
-                return None
-            if callable(strfunc):
-                return strfunc(target, source, env)
-        name = self.function_name()
-        tstr = array(target)
-        sstr = array(source)
-        return "%s(%s, %s)" % (name, tstr, sstr)
-
-    def __str__(self):
-        name = self.function_name()
-        if name == 'ActionCaller':
-            return str(self.execfunction)
-        return "%s(target, source, env)" % name
-
-    def execute(self, target, source, env, executor=None):
-        exc_info = (None,None,None)
-        try:
-            if executor:
-                target = executor.get_all_targets()
-                source = executor.get_all_sources()
-            rsources = list(map(rfile, source))
-            try:
-                result = self.execfunction(target=target, source=rsources, env=env)
-            except KeyboardInterrupt, e:
-                raise
-            except SystemExit, e:
-                raise
-            except Exception, e:
-                result = e
-                exc_info = sys.exc_info()
-
-            if result:
-                result = SCons.Errors.convert_to_BuildError(result, exc_info)
-                result.node=target
-                result.action=self
-                try:
-                    result.command=self.strfunction(target, source, env, executor)
-                except TypeError:
-                    result.command=self.strfunction(target, source, env)
-
-                # FIXME: This maintains backward compatibility with respect to
-                # which type of exceptions were returned by raising an
-                # exception and which ones were returned by value. It would
-                # probably be best to always return them by value here, but
-                # some codes do not check the return value of Actions and I do
-                # not have the time to modify them at this point.
-                if (exc_info[1] and
-                    not isinstance(exc_info[1],EnvironmentError)):
-                    raise result
-
-            return result
-        finally:
-            # Break the cycle between the traceback object and this
-            # function stack frame. See the sys.exc_info() doc info for
-            # more information about this issue.
-            del exc_info
-
-
-    def get_presig(self, target, source, env):
-        """Return the signature contents of this callable action."""
-        try:
-            return self.gc(target, source, env)
-        except AttributeError:
-            return self.funccontents
-
-    def get_implicit_deps(self, target, source, env):
-        return []
-
-class ListAction(ActionBase):
-    """Class for lists of other actions."""
-    def __init__(self, actionlist):
-        if SCons.Debug.track_instances: logInstanceCreation(self, 'Action.ListAction')
-        def list_of_actions(x):
-            if isinstance(x, ActionBase):
-                return x
-            return Action(x)
-        self.list = list(map(list_of_actions, actionlist))
-        # our children will have had any varlist
-        # applied; we don't need to do it again
-        self.varlist = ()
-        self.targets = '$TARGETS'
-
-    def genstring(self, target, source, env):
-        return '\n'.join([a.genstring(target, source, env) for a in self.list])
-
-    def __str__(self):
-        return '\n'.join(map(str, self.list))
-
-    def presub_lines(self, env):
-        return SCons.Util.flatten_sequence(
-            [a.presub_lines(env) for a in self.list])
-
-    def get_presig(self, target, source, env):
-        """Return the signature contents of this action list.
-
-        Simple concatenation of the signatures of the elements.
-        """
-        return "".join([x.get_contents(target, source, env) for x in self.list])
-
-    def __call__(self, target, source, env, exitstatfunc=_null, presub=_null,
-                 show=_null, execute=_null, chdir=_null, executor=None):
-        if executor:
-            target = executor.get_all_targets()
-            source = executor.get_all_sources()
-        for act in self.list:
-            stat = act(target, source, env, exitstatfunc, presub,
-                       show, execute, chdir, executor)
-            if stat:
-                return stat
-        return 0
-
-    def get_implicit_deps(self, target, source, env):
-        result = []
-        for act in self.list:
-            result.extend(act.get_implicit_deps(target, source, env))
-        return result
-
-    def get_varlist(self, target, source, env, executor=None):
-        result = SCons.Util.OrderedDict()
-        for act in self.list:
-            for var in act.get_varlist(target, source, env, executor):
-                result[var] = True
-        return list(result.keys())
-
-class ActionCaller(object):
-    """A class for delaying calling an Action function with specific
-    (positional and keyword) arguments until the Action is actually
-    executed.
-
-    This class looks to the rest of the world like a normal Action object,
-    but what it's really doing is hanging on to the arguments until we
-    have a target, source and env to use for the expansion.
-    """
-    def __init__(self, parent, args, kw):
-        self.parent = parent
-        self.args = args
-        self.kw = kw
-
-    def get_contents(self, target, source, env):
-        actfunc = self.parent.actfunc
-        try:
-            # "self.actfunc" is a function.
-            contents = str(actfunc.func_code.co_code)
-        except AttributeError:
-            # "self.actfunc" is a callable object.
-            try:
-                contents = str(actfunc.__call__.im_func.func_code.co_code)
-            except AttributeError:
-                # No __call__() method, so it might be a builtin
-                # or something like that.  Do the best we can.
-                contents = str(actfunc)
-        contents = remove_set_lineno_codes(contents)
-        return contents
-
-    def subst(self, s, target, source, env):
-        # If s is a list, recursively apply subst()
-        # to every element in the list
-        if is_List(s):
-            result = []
-            for elem in s:
-                result.append(self.subst(elem, target, source, env))
-            return self.parent.convert(result)
-
-        # Special-case hack:  Let a custom function wrapped in an
-        # ActionCaller get at the environment through which the action
-        # was called by using this hard-coded value as a special return.
-        if s == '$__env__':
-            return env
-        elif is_String(s):
-            return env.subst(s, 1, target, source)
-        return self.parent.convert(s)
-
-    def subst_args(self, target, source, env):
-        return [self.subst(x, target, source, env) for x in self.args]
-
-    def subst_kw(self, target, source, env):
-        kw = {}
-        for key in self.kw.keys():
-            kw[key] = self.subst(self.kw[key], target, source, env)
-        return kw
-
-    def __call__(self, target, source, env, executor=None):
-        args = self.subst_args(target, source, env)
-        kw = self.subst_kw(target, source, env)
-        return self.parent.actfunc(*args, **kw)
-
-    def strfunction(self, target, source, env):
-        args = self.subst_args(target, source, env)
-        kw = self.subst_kw(target, source, env)
-        return self.parent.strfunc(*args, **kw)
-
-    def __str__(self):
-        return self.parent.strfunc(*self.args, **self.kw)
-
-class ActionFactory(object):
-    """A factory class that will wrap up an arbitrary function
-    as an SCons-executable Action object.
-
-    The real heavy lifting here is done by the ActionCaller class.
-    We just collect the (positional and keyword) arguments that we're
-    called with and give them to the ActionCaller object we create,
-    so it can hang onto them until it needs them.
-    """
-    def __init__(self, actfunc, strfunc, convert=lambda x: x):
-        self.actfunc = actfunc
-        self.strfunc = strfunc
-        self.convert = convert
-
-    def __call__(self, *args, **kw):
-        ac = ActionCaller(self, args, kw)
-        action = Action(ac, strfunction=ac.strfunction)
-        return action
-
-# Local Variables:
-# tab-width:4
-# indent-tabs-mode:nil
-# End:
-# vim: set expandtab tabstop=4 shiftwidth=4: