# Path: py3kwarn2to3/pgen2/driver.py
# class Driver(object):
#     def __init__(self, grammar, convert=None, logger=None):
#     def parse_tokens(self, tokens, debug=False):
#     def parse_stream_raw(self, stream, debug=False):
#     def parse_stream(self, stream, debug=False):
#     def parse_file(self, filename, encoding=None, debug=False):
#     def parse_string(self, text, debug=False):
# def load_grammar(gt="Grammar.txt", gp=None,
#                  save=True, force=False, logger=None):
# def _newer(a, b):
# 
# Path: py3kwarn2to3/pgen2/tokenize.py
# def tokenize(readline, tokeneater=printtoken):
#     """
#     The tokenize() function accepts two parameters: one representing the
#     input stream, and one providing an output mechanism for tokenize().
# 
#     The first parameter, readline, must be a callable object which provides
#     the same interface as the readline() method of built-in file objects.
#     Each call to the function should return one line of input as a string.
# 
#     The second parameter, tokeneater, must also be a callable object. It is
#     called once for each token, with five arguments, corresponding to the
#     tuples generated by generate_tokens().
#     """
#     try:
#         tokenize_loop(readline, tokeneater)
#     except StopTokenizing:
#         pass
# 
# Path: py3kwarn2to3/fixer_util.py
# def find_root(node):
#     """Find the top level namespace."""
#     # Scamper up to the top level namespace
#     while node.type != syms.file_input:
#         assert node.parent, "Tree is insane! root found before "\
#                            "file_input node was found."
#         node = node.parent
#     return node


import os
import sys
import logging
import operator
import collections
    import codecs
            import multiprocessing
    from StringIO import StringIO
    from io import StringIO
from itertools import chain
from .pgen2 import driver, parse, tokenize, token
from .fixer_util import find_root
from . import pytree, pygram
from . import btm_matcher as bm
        Returns:
            True if the tree was modified, False otherwise.
        """

        for fixer in chain(self.pre_order, self.post_order):
            fixer.start_tree(tree, name)

        #use traditional matching for the incompatible fixers
        self.traverse_by(self.bmi_pre_order_heads, tree.pre_order())
        self.traverse_by(self.bmi_post_order_heads, tree.post_order())

        # obtain a set of candidate nodes
        match_set = self.BM.run(tree.leaves())

        while any(match_set.values()):
            for fixer in self.BM.fixers:
                if fixer in match_set and match_set[fixer]:
                    #sort by depth; apply fixers from bottom(of the AST) to top
                    match_set[fixer].sort(key=pytree.Base.depth, reverse=True)

                    if fixer.keep_line_order:
                        #some fixers(eg fix_imports) must be applied
                        #with the original file's line order
                        match_set[fixer].sort(key=pytree.Base.get_lineno)

                    for node in list(match_set[fixer]):
                        if node in match_set[fixer]:
                            match_set[fixer].remove(node)

                        try:

# Path: py3kwarn2to3/pgen2/driver.py
# class Driver(object):
#     def __init__(self, grammar, convert=None, logger=None):
#     def parse_tokens(self, tokens, debug=False):
#     def parse_stream_raw(self, stream, debug=False):
#     def parse_stream(self, stream, debug=False):
#     def parse_file(self, filename, encoding=None, debug=False):
#     def parse_string(self, text, debug=False):
# def load_grammar(gt="Grammar.txt", gp=None,
#                  save=True, force=False, logger=None):
# def _newer(a, b):
# 
# Path: py3kwarn2to3/pgen2/tokenize.py
# def tokenize(readline, tokeneater=printtoken):
#     """
#     The tokenize() function accepts two parameters: one representing the
#     input stream, and one providing an output mechanism for tokenize().
# 
#     The first parameter, readline, must be a callable object which provides
#     the same interface as the readline() method of built-in file objects.
#     Each call to the function should return one line of input as a string.
# 
#     The second parameter, tokeneater, must also be a callable object. It is
#     called once for each token, with five arguments, corresponding to the
#     tuples generated by generate_tokens().
#     """
#     try:
#         tokenize_loop(readline, tokeneater)
#     except StopTokenizing:
#         pass
# 
# Path: py3kwarn2to3/fixer_util.py
# def find_root(node):
#     """Find the top level namespace."""
#     # Scamper up to the top level namespace
#     while node.type != syms.file_input:
#         assert node.parent, "Tree is insane! root found before "\
#                            "file_input node was found."
#         node = node.parent
#     return node


# Path: py3kwarn2to3/refactor.py
import os
import sys
import logging
import operator
import collections
    import codecs
            import multiprocessing
    from StringIO import StringIO
    from io import StringIO
from itertools import chain
from .pgen2 import driver, parse, tokenize, token
from .fixer_util import find_root
from . import pytree, pygram
from . import btm_matcher as bm

        Returns:
            True if the tree was modified, False otherwise.
        """

        for fixer in chain(self.pre_order, self.post_order):
            fixer.start_tree(tree, name)

        #use traditional matching for the incompatible fixers
        self.traverse_by(self.bmi_pre_order_heads, tree.pre_order())
        self.traverse_by(self.bmi_post_order_heads, tree.post_order())

        # obtain a set of candidate nodes
        match_set = self.BM.run(tree.leaves())

        while any(match_set.values()):
            for fixer in self.BM.fixers:
                if fixer in match_set and match_set[fixer]:
                    #sort by depth; apply fixers from bottom(of the AST) to top
                    match_set[fixer].sort(key=pytree.Base.depth, reverse=True)

                    if fixer.keep_line_order:
                        #some fixers(eg fix_imports) must be applied
                        #with the original file's line order
                        match_set[fixer].sort(key=pytree.Base.get_lineno)

                    for node in list(match_set[fixer]):
                        if node in match_set[fixer]:
                            match_set[fixer].remove(node)

                        try:

                            find_root(node)