mirror of https://github.com/python/cpython
Replace the iter/itertext methods of Element in _elementtree with true C implementations, instead of the bootstrapped Python code. In addition to being cleaner (removing the last remains of the bootstrapping code in _elementtree), this gives a 10x performance boost for iter() on large documents.
Also reorganized the tests a bit to be more robust.
This commit is contained in:
Eli Bendersky
parent
fedb04a37a
commit
64d11e60f2
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@ -23,7 +23,8 @@ import weakref
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from test import support
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from test.support import findfile, import_fresh_module, gc_collect
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pyET = import_fresh_module('xml.etree.ElementTree', blocked=['_elementtree'])
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pyET = None
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ET = None
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SIMPLE_XMLFILE = findfile("simple.xml", subdir="xmltestdata")
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try:
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@ -209,10 +210,8 @@ def interface():
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These methods return an iterable. See bug 6472.
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>>> check_method(element.iter("tag").__next__)
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>>> check_method(element.iterfind("tag").__next__)
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>>> check_method(element.iterfind("*").__next__)
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>>> check_method(tree.iter("tag").__next__)
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>>> check_method(tree.iterfind("tag").__next__)
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>>> check_method(tree.iterfind("*").__next__)
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@ -291,42 +290,6 @@ def cdata():
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'<tag>hello</tag>'
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"""
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# Only with Python implementation
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def simplefind():
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"""
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Test find methods using the elementpath fallback.
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>>> ElementTree = pyET
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>>> CurrentElementPath = ElementTree.ElementPath
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>>> ElementTree.ElementPath = ElementTree._SimpleElementPath()
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>>> elem = ElementTree.XML(SAMPLE_XML)
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>>> elem.find("tag").tag
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'tag'
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>>> ElementTree.ElementTree(elem).find("tag").tag
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'tag'
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>>> elem.findtext("tag")
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'text'
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>>> elem.findtext("tog")
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>>> elem.findtext("tog", "default")
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'default'
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>>> ElementTree.ElementTree(elem).findtext("tag")
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'text'
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>>> summarize_list(elem.findall("tag"))
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['tag', 'tag']
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>>> summarize_list(elem.findall(".//tag"))
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['tag', 'tag', 'tag']
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Path syntax doesn't work in this case.
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>>> elem.find("section/tag")
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>>> elem.findtext("section/tag")
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>>> summarize_list(elem.findall("section/tag"))
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[]
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>>> ElementTree.ElementPath = CurrentElementPath
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"""
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def find():
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"""
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Test find methods (including xpath syntax).
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@ -1002,36 +965,6 @@ def methods():
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'1 < 2\n'
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"""
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def iterators():
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"""
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Test iterators.
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>>> e = ET.XML("<html><body>this is a <i>paragraph</i>.</body>..</html>")
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>>> summarize_list(e.iter())
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['html', 'body', 'i']
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>>> summarize_list(e.find("body").iter())
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['body', 'i']
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>>> summarize(next(e.iter()))
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'html'
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>>> "".join(e.itertext())
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'this is a paragraph...'
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>>> "".join(e.find("body").itertext())
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'this is a paragraph.'
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>>> next(e.itertext())
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'this is a '
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Method iterparse should return an iterator. See bug 6472.
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>>> sourcefile = serialize(e, to_string=False)
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>>> next(ET.iterparse(sourcefile)) # doctest: +ELLIPSIS
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('end', <Element 'i' at 0x...>)
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>>> tree = ET.ElementTree(None)
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>>> tree.iter()
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Traceback (most recent call last):
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AttributeError: 'NoneType' object has no attribute 'iter'
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"""
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ENTITY_XML = """\
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<!DOCTYPE points [
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<!ENTITY % user-entities SYSTEM 'user-entities.xml'>
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@ -1339,6 +1272,7 @@ XINCLUDE["default.xml"] = """\
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</document>
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""".format(html.escape(SIMPLE_XMLFILE, True))
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def xinclude_loader(href, parse="xml", encoding=None):
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try:
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data = XINCLUDE[href]
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@ -1411,22 +1345,6 @@ def xinclude():
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>>> # print(serialize(document)) # C5
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"""
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def xinclude_default():
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"""
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>>> from xml.etree import ElementInclude
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>>> document = xinclude_loader("default.xml")
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>>> ElementInclude.include(document)
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>>> print(serialize(document)) # default
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<document>
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<p>Example.</p>
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<root>
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<element key="value">text</element>
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<element>text</element>tail
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<empty-element />
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</root>
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</document>
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"""
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#
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# badly formatted xi:include tags
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@ -1917,9 +1835,8 @@ class ElementTreeTest(unittest.TestCase):
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self.assertIsInstance(ET.QName, type)
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self.assertIsInstance(ET.ElementTree, type)
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self.assertIsInstance(ET.Element, type)
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# XXX issue 14128 with C ElementTree
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# self.assertIsInstance(ET.TreeBuilder, type)
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# self.assertIsInstance(ET.XMLParser, type)
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self.assertIsInstance(ET.TreeBuilder, type)
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self.assertIsInstance(ET.XMLParser, type)
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def test_Element_subclass_trivial(self):
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class MyElement(ET.Element):
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@ -1953,6 +1870,73 @@ class ElementTreeTest(unittest.TestCase):
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self.assertEqual(mye.newmethod(), 'joe')
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class ElementIterTest(unittest.TestCase):
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def _ilist(self, elem, tag=None):
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return summarize_list(elem.iter(tag))
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def test_basic(self):
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doc = ET.XML("<html><body>this is a <i>paragraph</i>.</body>..</html>")
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self.assertEqual(self._ilist(doc), ['html', 'body', 'i'])
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self.assertEqual(self._ilist(doc.find('body')), ['body', 'i'])
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self.assertEqual(next(doc.iter()).tag, 'html')
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self.assertEqual(''.join(doc.itertext()), 'this is a paragraph...')
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self.assertEqual(''.join(doc.find('body').itertext()),
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'this is a paragraph.')
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self.assertEqual(next(doc.itertext()), 'this is a ')
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# iterparse should return an iterator
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sourcefile = serialize(doc, to_string=False)
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self.assertEqual(next(ET.iterparse(sourcefile))[0], 'end')
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tree = ET.ElementTree(None)
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self.assertRaises(AttributeError, tree.iter)
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def test_corners(self):
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# single root, no subelements
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a = ET.Element('a')
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self.assertEqual(self._ilist(a), ['a'])
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# one child
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b = ET.SubElement(a, 'b')
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self.assertEqual(self._ilist(a), ['a', 'b'])
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# one child and one grandchild
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c = ET.SubElement(b, 'c')
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self.assertEqual(self._ilist(a), ['a', 'b', 'c'])
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# two children, only first with grandchild
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d = ET.SubElement(a, 'd')
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self.assertEqual(self._ilist(a), ['a', 'b', 'c', 'd'])
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# replace first child by second
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a[0] = a[1]
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del a[1]
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self.assertEqual(self._ilist(a), ['a', 'd'])
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def test_iter_by_tag(self):
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doc = ET.XML('''
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<document>
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<house>
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<room>bedroom1</room>
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<room>bedroom2</room>
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</house>
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<shed>nothing here
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</shed>
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<house>
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<room>bedroom8</room>
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</house>
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</document>''')
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self.assertEqual(self._ilist(doc, 'room'), ['room'] * 3)
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self.assertEqual(self._ilist(doc, 'house'), ['house'] * 2)
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# make sure both tag=None and tag='*' return all tags
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all_tags = ['document', 'house', 'room', 'room',
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'shed', 'house', 'room']
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self.assertEqual(self._ilist(doc), all_tags)
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self.assertEqual(self._ilist(doc, '*'), all_tags)
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class TreeBuilderTest(unittest.TestCase):
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sample1 = ('<!DOCTYPE html PUBLIC'
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' "-//W3C//DTD XHTML 1.0 Transitional//EN"'
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@ -2026,7 +2010,20 @@ class TreeBuilderTest(unittest.TestCase):
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('html', '-//W3C//DTD XHTML 1.0 Transitional//EN',
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'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'))
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class XincludeTest(unittest.TestCase):
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def test_xinclude_default(self):
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from xml.etree import ElementInclude
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doc = xinclude_loader('default.xml')
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ElementInclude.include(doc)
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s = serialize(doc)
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self.assertEqual(s.strip(), '''<document>
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<p>Example.</p>
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<root>
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<element key="value">text</element>
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<element>text</element>tail
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<empty-element />
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</root>
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</document>''')
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class XMLParserTest(unittest.TestCase):
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sample1 = '<file><line>22</line></file>'
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sample2 = ('<!DOCTYPE html PUBLIC'
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@ -2073,13 +2070,6 @@ class XMLParserTest(unittest.TestCase):
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'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'))
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class NoAcceleratorTest(unittest.TestCase):
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# Test that the C accelerator was not imported for pyET
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def test_correct_import_pyET(self):
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self.assertEqual(pyET.Element.__module__, 'xml.etree.ElementTree')
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self.assertEqual(pyET.SubElement.__module__, 'xml.etree.ElementTree')
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class NamespaceParseTest(unittest.TestCase):
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def test_find_with_namespace(self):
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nsmap = {'h': 'hello', 'f': 'foo'}
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@ -2090,7 +2080,6 @@ class NamespaceParseTest(unittest.TestCase):
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self.assertEqual(len(doc.findall('.//{foo}name', nsmap)), 1)
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class ElementSlicingTest(unittest.TestCase):
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def _elem_tags(self, elemlist):
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return [e.tag for e in elemlist]
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@ -2232,6 +2221,36 @@ class KeywordArgsTest(unittest.TestCase):
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with self.assertRaisesRegex(TypeError, 'must be dict, not str'):
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ET.Element('a', attrib="I'm not a dict")
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# --------------------------------------------------------------------
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@unittest.skipUnless(pyET, 'only for the Python version')
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class NoAcceleratorTest(unittest.TestCase):
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# Test that the C accelerator was not imported for pyET
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def test_correct_import_pyET(self):
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self.assertEqual(pyET.Element.__module__, 'xml.etree.ElementTree')
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self.assertEqual(pyET.SubElement.__module__, 'xml.etree.ElementTree')
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class ElementPathFallbackTest(unittest.TestCase):
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def test_fallback(self):
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current_ElementPath = ET.ElementPath
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ET.ElementPath = ET._SimpleElementPath()
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elem = ET.XML(SAMPLE_XML)
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self.assertEqual(elem.find('tag').tag, 'tag')
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self.assertEqual(ET.ElementTree(elem).find('tag').tag, 'tag')
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self.assertEqual(elem.findtext('tag'), 'text')
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self.assertIsNone(elem.findtext('tog'))
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self.assertEqual(elem.findtext('tog', 'default'), 'default')
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self.assertEqual(ET.ElementTree(elem).findtext('tag'), 'text')
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self.assertEqual(summarize_list(elem.findall('tag')), ['tag', 'tag'])
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self.assertEqual(summarize_list(elem.findall('.//tag')),
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['tag', 'tag', 'tag'])
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self.assertIsNone(elem.find('section/tag'))
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self.assertIsNone(elem.findtext('section/tag'))
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self.assertEqual(summarize_list(elem.findall('section/tag')), [])
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ET.ElementPath = current_ElementPath
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# --------------------------------------------------------------------
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@ -2276,31 +2295,43 @@ class CleanContext(object):
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self.checkwarnings.__exit__(*args)
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def test_main(module=pyET):
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from test import test_xml_etree
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def test_main(module=None):
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# When invoked without a module, runs the Python ET tests by loading pyET.
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# Otherwise, uses the given module as the ET.
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if module is None:
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global pyET
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pyET = import_fresh_module('xml.etree.ElementTree',
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blocked=['_elementtree'])
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module = pyET
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# The same doctests are used for both the Python and the C implementations
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test_xml_etree.ET = module
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global ET
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ET = module
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test_classes = [
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ElementSlicingTest,
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BasicElementTest,
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StringIOTest,
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ParseErrorTest,
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XincludeTest,
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ElementTreeTest,
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NamespaceParseTest,
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ElementIterTest,
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TreeBuilderTest,
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XMLParserTest,
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KeywordArgsTest]
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if module is pyET:
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# Run the tests specific to the Python implementation
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test_classes += [NoAcceleratorTest]
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]
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# These tests will only run for the pure-Python version that doesn't import
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# _elementtree. We can't use skipUnless here, because pyET is filled in only
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# after the module is loaded.
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if pyET:
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test_classes.extend([
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NoAcceleratorTest,
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ElementPathFallbackTest,
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])
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support.run_unittest(*test_classes)
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# XXX the C module should give the same warnings as the Python module
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with CleanContext(quiet=(module is not pyET)):
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support.run_doctest(test_xml_etree, verbosity=True)
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support.run_doctest(sys.modules[__name__], verbosity=True)
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if __name__ == '__main__':
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test_main()
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@ -8,31 +8,6 @@ cET = import_fresh_module('xml.etree.ElementTree', fresh=['_elementtree'])
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cET_alias = import_fresh_module('xml.etree.cElementTree', fresh=['_elementtree', 'xml.etree'])
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# cElementTree specific tests
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def sanity():
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r"""
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Import sanity.
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Issue #6697.
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>>> cElementTree = cET
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>>> e = cElementTree.Element('a')
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>>> getattr(e, '\uD800') # doctest: +ELLIPSIS
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Traceback (most recent call last):
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...
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UnicodeEncodeError: ...
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>>> p = cElementTree.XMLParser()
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>>> p.version.split()[0]
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'Expat'
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>>> getattr(p, '\uD800')
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Traceback (most recent call last):
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...
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AttributeError: 'XMLParser' object has no attribute '\ud800'
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"""
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class MiscTests(unittest.TestCase):
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# Issue #8651.
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@support.bigmemtest(size=support._2G + 100, memuse=1)
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@ -46,6 +21,7 @@ class MiscTests(unittest.TestCase):
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finally:
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data = None
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@unittest.skipUnless(cET, 'requires _elementtree')
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class TestAliasWorking(unittest.TestCase):
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# Test that the cET alias module is alive
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@ -53,6 +29,7 @@ class TestAliasWorking(unittest.TestCase):
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e = cET_alias.Element('foo')
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self.assertEqual(e.tag, 'foo')
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@unittest.skipUnless(cET, 'requires _elementtree')
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class TestAcceleratorImported(unittest.TestCase):
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# Test that the C accelerator was imported, as expected
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@ -67,7 +44,6 @@ def test_main():
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from test import test_xml_etree, test_xml_etree_c
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# Run the tests specific to the C implementation
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support.run_doctest(test_xml_etree_c, verbosity=True)
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support.run_unittest(
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MiscTests,
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TestAliasWorking,
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|
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@ -916,11 +916,7 @@ def _namespaces(elem, default_namespace=None):
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_raise_serialization_error(qname)
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# populate qname and namespaces table
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try:
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iterate = elem.iter
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except AttributeError:
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iterate = elem.getiterator # cET compatibility
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for elem in iterate():
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for elem in elem.iter():
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tag = elem.tag
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if isinstance(tag, QName):
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if tag.text not in qnames:
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|
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@ -103,8 +103,6 @@ do { memory -= size; printf("%8d - %s\n", memory, comment); } while (0)
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/* glue functions (see the init function for details) */
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static PyObject* elementtree_parseerror_obj;
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static PyObject* elementtree_deepcopy_obj;
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static PyObject* elementtree_iter_obj;
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static PyObject* elementtree_itertext_obj;
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static PyObject* elementpath_obj;
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/* helpers */
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@ -1109,67 +1107,32 @@ element_getchildren(ElementObject* self, PyObject* args)
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return list;
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}
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static PyObject*
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element_iter(ElementObject* self, PyObject* args)
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{
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PyObject* result;
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static PyObject *
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create_elementiter(ElementObject *self, PyObject *tag, int gettext);
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static PyObject *
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element_iter(ElementObject *self, PyObject *args)
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{
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PyObject* tag = Py_None;
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if (!PyArg_ParseTuple(args, "|O:iter", &tag))
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return NULL;
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if (!elementtree_iter_obj) {
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PyErr_SetString(
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PyExc_RuntimeError,
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"iter helper not found"
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);
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return NULL;
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}
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args = PyTuple_New(2);
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if (!args)
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return NULL;
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|
||||
Py_INCREF(self); PyTuple_SET_ITEM(args, 0, (PyObject*) self);
|
||||
Py_INCREF(tag); PyTuple_SET_ITEM(args, 1, (PyObject*) tag);
|
||||
|
||||
result = PyObject_CallObject(elementtree_iter_obj, args);
|
||||
|
||||
Py_DECREF(args);
|
||||
|
||||
return result;
|
||||
return create_elementiter(self, tag, 0);
|
||||
}
|
||||
|
||||
|
||||
static PyObject*
|
||||
element_itertext(ElementObject* self, PyObject* args)
|
||||
{
|
||||
PyObject* result;
|
||||
|
||||
if (!PyArg_ParseTuple(args, ":itertext"))
|
||||
return NULL;
|
||||
|
||||
if (!elementtree_itertext_obj) {
|
||||
PyErr_SetString(
|
||||
PyExc_RuntimeError,
|
||||
"itertext helper not found"
|
||||
);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
args = PyTuple_New(1);
|
||||
if (!args)
|
||||
return NULL;
|
||||
|
||||
Py_INCREF(self); PyTuple_SET_ITEM(args, 0, (PyObject*) self);
|
||||
|
||||
result = PyObject_CallObject(elementtree_itertext_obj, args);
|
||||
|
||||
Py_DECREF(args);
|
||||
|
||||
return result;
|
||||
return create_elementiter(self, Py_None, 1);
|
||||
}
|
||||
|
||||
|
||||
static PyObject*
|
||||
element_getitem(PyObject* self_, Py_ssize_t index)
|
||||
{
|
||||
|
|
@ -1790,6 +1753,267 @@ static PyTypeObject Element_Type = {
|
|||
0, /* tp_free */
|
||||
};
|
||||
|
||||
/******************************* Element iterator ****************************/
|
||||
|
||||
/* ElementIterObject represents the iteration state over an XML element in
|
||||
* pre-order traversal. To keep track of which sub-element should be returned
|
||||
* next, a stack of parents is maintained. This is a standard stack-based
|
||||
* iterative pre-order traversal of a tree.
|
||||
* The stack is managed using a single-linked list starting at parent_stack.
|
||||
* Each stack node contains the saved parent to which we should return after
|
||||
* the current one is exhausted, and the next child to examine in that parent.
|
||||
*/
|
||||
typedef struct ParentLocator_t {
|
||||
ElementObject *parent;
|
||||
Py_ssize_t child_index;
|
||||
struct ParentLocator_t *next;
|
||||
} ParentLocator;
|
||||
|
||||
typedef struct {
|
||||
PyObject_HEAD
|
||||
ParentLocator *parent_stack;
|
||||
ElementObject *root_element;
|
||||
PyObject *sought_tag;
|
||||
int root_done;
|
||||
int gettext;
|
||||
} ElementIterObject;
|
||||
|
||||
|
||||
static void
|
||||
elementiter_dealloc(ElementIterObject *it)
|
||||
{
|
||||
ParentLocator *p = it->parent_stack;
|
||||
while (p) {
|
||||
ParentLocator *temp = p;
|
||||
Py_XDECREF(p->parent);
|
||||
p = p->next;
|
||||
PyObject_Free(temp);
|
||||
}
|
||||
|
||||
Py_XDECREF(it->sought_tag);
|
||||
Py_XDECREF(it->root_element);
|
||||
|
||||
PyObject_GC_UnTrack(it);
|
||||
PyObject_GC_Del(it);
|
||||
}
|
||||
|
||||
static int
|
||||
elementiter_traverse(ElementIterObject *it, visitproc visit, void *arg)
|
||||
{
|
||||
ParentLocator *p = it->parent_stack;
|
||||
while (p) {
|
||||
Py_VISIT(p->parent);
|
||||
p = p->next;
|
||||
}
|
||||
|
||||
Py_VISIT(it->root_element);
|
||||
Py_VISIT(it->sought_tag);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Helper function for elementiter_next. Add a new parent to the parent stack.
|
||||
*/
|
||||
static ParentLocator *
|
||||
parent_stack_push_new(ParentLocator *stack, ElementObject *parent)
|
||||
{
|
||||
ParentLocator *new_node = PyObject_Malloc(sizeof(ParentLocator));
|
||||
if (new_node) {
|
||||
new_node->parent = parent;
|
||||
Py_INCREF(parent);
|
||||
new_node->child_index = 0;
|
||||
new_node->next = stack;
|
||||
}
|
||||
return new_node;
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
elementiter_next(ElementIterObject *it)
|
||||
{
|
||||
/* Sub-element iterator.
|
||||
*
|
||||
* A short note on gettext: this function serves both the iter() and
|
||||
* itertext() methods to avoid code duplication. However, there are a few
|
||||
* small differences in the way these iterations work. Namely:
|
||||
* - itertext() only yields text from nodes that have it, and continues
|
||||
* iterating when a node doesn't have text (so it doesn't return any
|
||||
* node like iter())
|
||||
* - itertext() also has to handle tail, after finishing with all the
|
||||
* children of a node.
|
||||
*/
|
||||
|
||||
while (1) {
|
||||
/* Handle the case reached in the beginning and end of iteration, where
|
||||
* the parent stack is empty. The root_done flag gives us indication
|
||||
* whether we've just started iterating (so root_done is 0), in which
|
||||
* case the root is returned. If root_done is 1 and we're here, the
|
||||
* iterator is exhausted.
|
||||
*/
|
||||
if (!it->parent_stack->parent) {
|
||||
if (it->root_done) {
|
||||
PyErr_SetNone(PyExc_StopIteration);
|
||||
return NULL;
|
||||
} else {
|
||||
it->parent_stack = parent_stack_push_new(it->parent_stack,
|
||||
it->root_element);
|
||||
if (!it->parent_stack) {
|
||||
PyErr_NoMemory();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
it->root_done = 1;
|
||||
if (it->sought_tag == Py_None ||
|
||||
PyObject_RichCompareBool(it->root_element->tag,
|
||||
it->sought_tag, Py_EQ) == 1) {
|
||||
if (it->gettext) {
|
||||
PyObject *text = JOIN_OBJ(it->root_element->text);
|
||||
if (PyObject_IsTrue(text)) {
|
||||
Py_INCREF(text);
|
||||
return text;
|
||||
}
|
||||
} else {
|
||||
Py_INCREF(it->root_element);
|
||||
return (PyObject *)it->root_element;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* See if there are children left to traverse in the current parent. If
|
||||
* yes, visit the next child. If not, pop the stack and try again.
|
||||
*/
|
||||
ElementObject *cur_parent = it->parent_stack->parent;
|
||||
Py_ssize_t child_index = it->parent_stack->child_index;
|
||||
if (cur_parent->extra && child_index < cur_parent->extra->length) {
|
||||
ElementObject *child = (ElementObject *)
|
||||
cur_parent->extra->children[child_index];
|
||||
it->parent_stack->child_index++;
|
||||
it->parent_stack = parent_stack_push_new(it->parent_stack,
|
||||
child);
|
||||
if (!it->parent_stack) {
|
||||
PyErr_NoMemory();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (it->gettext) {
|
||||
PyObject *text = JOIN_OBJ(child->text);
|
||||
if (PyObject_IsTrue(text)) {
|
||||
Py_INCREF(text);
|
||||
return text;
|
||||
}
|
||||
} else if (it->sought_tag == Py_None ||
|
||||
PyObject_RichCompareBool(child->tag,
|
||||
it->sought_tag, Py_EQ) == 1) {
|
||||
Py_INCREF(child);
|
||||
return (PyObject *)child;
|
||||
}
|
||||
else
|
||||
continue;
|
||||
}
|
||||
else {
|
||||
PyObject *tail = it->gettext ? JOIN_OBJ(cur_parent->tail) : Py_None;
|
||||
ParentLocator *next = it->parent_stack->next;
|
||||
Py_XDECREF(it->parent_stack->parent);
|
||||
PyObject_Free(it->parent_stack);
|
||||
it->parent_stack = next;
|
||||
|
||||
/* Note that extra condition on it->parent_stack->parent here;
|
||||
* this is because itertext() is supposed to only return *inner*
|
||||
* text, not text following the element it began iteration with.
|
||||
*/
|
||||
if (it->parent_stack->parent && PyObject_IsTrue(tail)) {
|
||||
Py_INCREF(tail);
|
||||
return tail;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
static PyTypeObject ElementIter_Type = {
|
||||
PyVarObject_HEAD_INIT(NULL, 0)
|
||||
"_elementtree._element_iterator", /* tp_name */
|
||||
sizeof(ElementIterObject), /* tp_basicsize */
|
||||
0, /* tp_itemsize */
|
||||
/* methods */
|
||||
(destructor)elementiter_dealloc, /* tp_dealloc */
|
||||
0, /* tp_print */
|
||||
0, /* tp_getattr */
|
||||
0, /* tp_setattr */
|
||||
0, /* tp_reserved */
|
||||
0, /* tp_repr */
|
||||
0, /* tp_as_number */
|
||||
0, /* tp_as_sequence */
|
||||
0, /* tp_as_mapping */
|
||||
0, /* tp_hash */
|
||||
0, /* tp_call */
|
||||
0, /* tp_str */
|
||||
0, /* tp_getattro */
|
||||
0, /* tp_setattro */
|
||||
0, /* tp_as_buffer */
|
||||
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
|
||||
0, /* tp_doc */
|
||||
(traverseproc)elementiter_traverse, /* tp_traverse */
|
||||
0, /* tp_clear */
|
||||
0, /* tp_richcompare */
|
||||
0, /* tp_weaklistoffset */
|
||||
PyObject_SelfIter, /* tp_iter */
|
||||
(iternextfunc)elementiter_next, /* tp_iternext */
|
||||
0, /* tp_methods */
|
||||
0, /* tp_members */
|
||||
0, /* tp_getset */
|
||||
0, /* tp_base */
|
||||
0, /* tp_dict */
|
||||
0, /* tp_descr_get */
|
||||
0, /* tp_descr_set */
|
||||
0, /* tp_dictoffset */
|
||||
0, /* tp_init */
|
||||
0, /* tp_alloc */
|
||||
0, /* tp_new */
|
||||
};
|
||||
|
||||
|
||||
static PyObject *
|
||||
create_elementiter(ElementObject *self, PyObject *tag, int gettext)
|
||||
{
|
||||
ElementIterObject *it;
|
||||
PyObject *star = NULL;
|
||||
|
||||
it = PyObject_GC_New(ElementIterObject, &ElementIter_Type);
|
||||
if (!it)
|
||||
return NULL;
|
||||
if (!(it->parent_stack = PyObject_Malloc(sizeof(ParentLocator)))) {
|
||||
PyObject_GC_Del(it);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
it->parent_stack->parent = NULL;
|
||||
it->parent_stack->child_index = 0;
|
||||
it->parent_stack->next = NULL;
|
||||
|
||||
if (PyUnicode_Check(tag))
|
||||
star = PyUnicode_FromString("*");
|
||||
else if (PyBytes_Check(tag))
|
||||
star = PyBytes_FromString("*");
|
||||
|
||||
if (star && PyObject_RichCompareBool(tag, star, Py_EQ) == 1)
|
||||
tag = Py_None;
|
||||
|
||||
Py_XDECREF(star);
|
||||
it->sought_tag = tag;
|
||||
it->root_done = 0;
|
||||
it->gettext = gettext;
|
||||
it->root_element = self;
|
||||
|
||||
Py_INCREF(self);
|
||||
Py_INCREF(tag);
|
||||
|
||||
PyObject_GC_Track(it);
|
||||
return (PyObject *)it;
|
||||
}
|
||||
|
||||
|
||||
/* ==================================================================== */
|
||||
/* the tree builder type */
|
||||
|
||||
|
|
@ -3238,8 +3462,7 @@ static struct PyModuleDef _elementtreemodule = {
|
|||
PyMODINIT_FUNC
|
||||
PyInit__elementtree(void)
|
||||
{
|
||||
PyObject *m, *g, *temp;
|
||||
char* bootstrap;
|
||||
PyObject *m, *temp;
|
||||
|
||||
/* Initialize object types */
|
||||
if (PyType_Ready(&TreeBuilder_Type) < 0)
|
||||
|
|
@ -3255,44 +3478,6 @@ PyInit__elementtree(void)
|
|||
if (!m)
|
||||
return NULL;
|
||||
|
||||
/* The code below requires that the module gets already added
|
||||
to sys.modules. */
|
||||
PyDict_SetItemString(PyImport_GetModuleDict(),
|
||||
_elementtreemodule.m_name,
|
||||
m);
|
||||
|
||||
/* python glue code */
|
||||
|
||||
g = PyDict_New();
|
||||
if (!g)
|
||||
return NULL;
|
||||
|
||||
PyDict_SetItemString(g, "__builtins__", PyEval_GetBuiltins());
|
||||
|
||||
bootstrap = (
|
||||
"def iter(node, tag=None):\n" /* helper */
|
||||
" if tag == '*':\n"
|
||||
" tag = None\n"
|
||||
" if tag is None or node.tag == tag:\n"
|
||||
" yield node\n"
|
||||
" for node in node:\n"
|
||||
" for node in iter(node, tag):\n"
|
||||
" yield node\n"
|
||||
|
||||
"def itertext(node):\n" /* helper */
|
||||
" if node.text:\n"
|
||||
" yield node.text\n"
|
||||
" for e in node:\n"
|
||||
" for s in e.itertext():\n"
|
||||
" yield s\n"
|
||||
" if e.tail:\n"
|
||||
" yield e.tail\n"
|
||||
|
||||
);
|
||||
|
||||
if (!PyRun_String(bootstrap, Py_file_input, g, NULL))
|
||||
return NULL;
|
||||
|
||||
if (!(temp = PyImport_ImportModule("copy")))
|
||||
return NULL;
|
||||
elementtree_deepcopy_obj = PyObject_GetAttrString(temp, "deepcopy");
|
||||
|
|
@ -3301,9 +3486,6 @@ PyInit__elementtree(void)
|
|||
if (!(elementpath_obj = PyImport_ImportModule("xml.etree.ElementPath")))
|
||||
return NULL;
|
||||
|
||||
elementtree_iter_obj = PyDict_GetItemString(g, "iter");
|
||||
elementtree_itertext_obj = PyDict_GetItemString(g, "itertext");
|
||||
|
||||
/* link against pyexpat */
|
||||
expat_capi = PyCapsule_Import(PyExpat_CAPSULE_NAME, 0);
|
||||
if (expat_capi) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue