Mercurial > hg
view contrib/hgfixes/fix_bytes.py @ 14333:31a5973fcf96
revlog: get rid of defversion
defversion was a property (later option) on the store opener, used to propagate
the changelog revlog format to the other revlogs, so they would be created with
the same format.
This required that the changelog instance was created before any other revlog;
an invariant that wasn't directly enforced (or documented) anywhere.
We now use the revlogv1 requirement instead, which is transfered to the store
opener options. If this option is missing, v0 revlogs are created.
author | Sune Foldager <cryo@cyanite.org> |
---|---|
date | Mon, 16 May 2011 12:44:34 +0200 |
parents | 37a70a784397 |
children | e51d4aedace9 |
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"""Fixer that changes plain strings to bytes strings.""" import re from lib2to3 import fixer_base from lib2to3.pgen2 import token from lib2to3.fixer_util import Name from lib2to3.pygram import python_symbols as syms _re = re.compile(r'[rR]?[\'\"]') # XXX: Implementing a blacklist in 2to3 turned out to be more troublesome than # blacklisting some modules inside the fixers. So, this is what I came with. blacklist = ['mercurial/demandimport.py', 'mercurial/py3kcompat.py', # valid python 3 already 'mercurial/i18n.py', ] def isdocstring(node): def isclassorfunction(ancestor): symbols = (syms.funcdef, syms.classdef) # if the current node is a child of a function definition, a class # definition or a file, then it is a docstring if ancestor.type == syms.simple_stmt: try: while True: if ancestor.type in symbols: return True ancestor = ancestor.parent except AttributeError: return False return False def ismodule(ancestor): # Our child is a docstring if we are a simple statement, and our # ancestor is file_input. In other words, our child is a lone string in # the source file. try: if (ancestor.type == syms.simple_stmt and ancestor.parent.type == syms.file_input): return True except AttributeError: return False def isdocassignment(ancestor): # Assigning to __doc__, definitely a string try: while True: if (ancestor.type == syms.expr_stmt and Name('__doc__') in ancestor.children): return True ancestor = ancestor.parent except AttributeError: return False if ismodule(node.parent) or \ isdocassignment(node.parent) or \ isclassorfunction(node.parent): return True return False def shouldtransform(node): specialnames = ['__main__'] if node.value in specialnames: return False ggparent = node.parent.parent.parent sggparent = str(ggparent) if 'getattr' in sggparent or \ 'hasattr' in sggparent or \ 'setattr' in sggparent or \ 'encode' in sggparent or \ 'decode' in sggparent: return False return True class FixBytes(fixer_base.BaseFix): PATTERN = 'STRING' def transform(self, node, results): if self.filename in blacklist: return if node.type == token.STRING: if _re.match(node.value): if isdocstring(node): return if not shouldtransform(node): return new = node.clone() new.value = 'b' + new.value return new