diff options
Diffstat (limited to 'Lib/lib2to3/fixes')
-rw-r--r-- | Lib/lib2to3/fixes/fix_import.py | 29 | ||||
-rw-r--r-- | Lib/lib2to3/fixes/fix_itertools_imports.py | 14 | ||||
-rw-r--r-- | Lib/lib2to3/fixes/util.py | 20 |
3 files changed, 45 insertions, 18 deletions
diff --git a/Lib/lib2to3/fixes/fix_import.py b/Lib/lib2to3/fixes/fix_import.py index 6617054..91cbcf7 100644 --- a/Lib/lib2to3/fixes/fix_import.py +++ b/Lib/lib2to3/fixes/fix_import.py @@ -7,19 +7,20 @@ Becomes: And this import: import spam Becomes: - import .spam + from . import spam """ # Local imports from . import basefix from os.path import dirname, join, exists, pathsep +from .util import FromImport class FixImport(basefix.BaseFix): PATTERN = """ - import_from< 'from' imp=any 'import' any > + import_from< type='from' imp=any 'import' any > | - import_name< 'import' imp=any > + import_name< type='import' imp=any > """ def transform(self, node, results): @@ -33,15 +34,19 @@ class FixImport(basefix.BaseFix): # I guess this is a global import -- skip it! return - # Some imps are top-level (eg: 'import ham') - # some are first level (eg: 'import ham.eggs') - # some are third level (eg: 'import ham.eggs as spam') - # Hence, the loop - while not hasattr(imp, 'value'): - imp = imp.children[0] - - imp.value = "." + imp.value - node.changed() + if results['type'].value == 'from': + # Some imps are top-level (eg: 'import ham') + # some are first level (eg: 'import ham.eggs') + # some are third level (eg: 'import ham.eggs as spam') + # Hence, the loop + while not hasattr(imp, 'value'): + imp = imp.children[0] + imp.value = "." + imp.value + node.changed() + else: + new = FromImport('.', getattr(imp, 'content', None) or [imp]) + new.prefix = node.get_prefix() + node = new return node def probably_a_local_import(imp_name, file_path): diff --git a/Lib/lib2to3/fixes/fix_itertools_imports.py b/Lib/lib2to3/fixes/fix_itertools_imports.py index 0faa4ea..d5876a5 100644 --- a/Lib/lib2to3/fixes/fix_itertools_imports.py +++ b/Lib/lib2to3/fixes/fix_itertools_imports.py @@ -17,6 +17,9 @@ class FixItertoolsImports(basefix.BaseFix): # Handle 'import ... as ...' continue if child.value in ('imap', 'izip', 'ifilter'): + # The value must be set to none in case child == import, + # so that the test for empty imports will work out + child.value = None child.remove() elif child.value == 'ifilterfalse': node.changed() @@ -34,10 +37,9 @@ class FixItertoolsImports(basefix.BaseFix): if unicode(children[-1]) == ',': children[-1].remove() - # If there is nothing left, return a blank line + # If there are no imports left, just get rid of the entire statement if not (imports.children or getattr(imports, 'value', None)): - new = BlankLine() - new.prefix = node.get_prefix() - else: - new = node - return new + p = node.get_prefix() + node = BlankLine() + node.prefix = p + return node diff --git a/Lib/lib2to3/fixes/util.py b/Lib/lib2to3/fixes/util.py index ef809af..82dfba1 100644 --- a/Lib/lib2to3/fixes/util.py +++ b/Lib/lib2to3/fixes/util.py @@ -108,6 +108,26 @@ def ListComp(xp, fp, it, test=None): inner, Leaf(token.RBRACE, "]")]) +def FromImport(package_name, name_leafs): + """ Return an import statement in the form: + from package import name_leafs""" + # XXX: May not handle dotted imports properly (eg, package_name='foo.bar') + assert package_name == '.' or '.' not in package.name, "FromImport has "\ + "not been tested with dotted package names -- use at your own "\ + "peril!" + + for leaf in name_leafs: + # Pull the leaves out of their old tree + leaf.remove() + + children = [Leaf(token.NAME, 'from'), + Leaf(token.NAME, package_name, prefix=" "), + Leaf(token.NAME, 'import', prefix=" "), + Node(syms.import_as_names, name_leafs)] + imp = Node(syms.import_from, children) + return imp + + ########################################################### ### Determine whether a node represents a given literal ########################################################### |