Restoring authorship annotation for Anton Samokhvalov <[email protected]>. Commit 2 of 2.

1 files changed, 275 insertions, 275 deletions

diff --git a/contrib/tools/cython/Cython/Compiler/TreePath.py b/contrib/tools/cython/Cython/Compiler/TreePath.py
index 2ad4545d0b0..8585905557b 100644
--- a/contrib/tools/cython/Cython/Compiler/TreePath.py
+++ b/contrib/tools/cython/Cython/Compiler/TreePath.py
@@ -1,23 +1,23 @@
-""" 
-A simple XPath-like language for tree traversal. 
- 
-This works by creating a filter chain of generator functions.  Each 
-function selects a part of the expression, e.g. a child node, a 
-specific descendant or a node that holds an attribute. 
-""" 
- 
-from __future__ import absolute_import 
- 
-import re 
-import operator 
+"""
+A simple XPath-like language for tree traversal.
+
+This works by creating a filter chain of generator functions.  Each
+function selects a part of the expression, e.g. a child node, a
+specific descendant or a node that holds an attribute.
+"""
+
+from __future__ import absolute_import
+
+import re
+import operator
 import sys
- 
+
 if sys.version_info[0] >= 3:
     _unicode = str
 else:
     _unicode = unicode
 
-path_tokenizer = re.compile( 
+path_tokenizer = re.compile(
     r"("
     r"'[^']*'|\"[^\"]*\"|"
     r"//?|"
@@ -26,271 +26,271 @@ path_tokenizer = re.compile(
     r"[/.*\[\]()@])|"
     r"([^/\[\]()@=\s]+)|"
     r"\s+"
-    ).findall 
- 
-def iterchildren(node, attr_name): 
-    # returns an iterable of all child nodes of that name 
-    child = getattr(node, attr_name) 
-    if child is not None: 
-        if type(child) is list: 
-            return child 
-        else: 
-            return [child] 
-    else: 
-        return () 
- 
-def _get_first_or_none(it): 
-    try: 
-        try: 
-            _next = it.next 
-        except AttributeError: 
-            return next(it) 
-        else: 
-            return _next() 
-    except StopIteration: 
-        return None 
- 
-def type_name(node): 
-    return node.__class__.__name__.split('.')[-1] 
- 
-def parse_func(next, token): 
-    name = token[1] 
-    token = next() 
-    if token[0] != '(': 
-        raise ValueError("Expected '(' after function name '%s'" % name) 
-    predicate = handle_predicate(next, token) 
-    return name, predicate 
- 
-def handle_func_not(next, token): 
-    """ 
-    not(...) 
-    """ 
-    name, predicate = parse_func(next, token) 
- 
-    def select(result): 
-        for node in result: 
-            if _get_first_or_none(predicate([node])) is None: 
-                yield node 
-    return select 
- 
-def handle_name(next, token): 
-    """ 
-    /NodeName/ 
-    or 
-    func(...) 
-    """ 
-    name = token[1] 
-    if name in functions: 
-        return functions[name](next, token) 
-    def select(result): 
-        for node in result: 
-            for attr_name in node.child_attrs: 
-                for child in iterchildren(node, attr_name): 
-                    if type_name(child) == name: 
-                        yield child 
-    return select 
- 
-def handle_star(next, token): 
-    """ 
-    /*/ 
-    """ 
-    def select(result): 
-        for node in result: 
-            for name in node.child_attrs: 
-                for child in iterchildren(node, name): 
-                    yield child 
-    return select 
- 
-def handle_dot(next, token): 
-    """ 
-    /./ 
-    """ 
-    def select(result): 
-        return result 
-    return select 
- 
-def handle_descendants(next, token): 
-    """ 
-    //... 
-    """ 
-    token = next() 
-    if token[0] == "*": 
-        def iter_recursive(node): 
-            for name in node.child_attrs: 
-                for child in iterchildren(node, name): 
-                    yield child 
-                    for c in iter_recursive(child): 
-                        yield c 
-    elif not token[0]: 
-        node_name = token[1] 
-        def iter_recursive(node): 
-            for name in node.child_attrs: 
-                for child in iterchildren(node, name): 
-                    if type_name(child) == node_name: 
-                        yield child 
-                    for c in iter_recursive(child): 
-                        yield c 
-    else: 
-        raise ValueError("Expected node name after '//'") 
- 
-    def select(result): 
-        for node in result: 
-            for child in iter_recursive(node): 
-                yield child 
- 
-    return select 
- 
- 
-def handle_attribute(next, token): 
-    token = next() 
-    if token[0]: 
-        raise ValueError("Expected attribute name") 
-    name = token[1] 
-    value = None 
-    try: 
-        token = next() 
-    except StopIteration: 
-        pass 
-    else: 
-        if token[0] == '=': 
-            value = parse_path_value(next) 
-    readattr = operator.attrgetter(name) 
-    if value is None: 
-        def select(result): 
-            for node in result: 
-                try: 
-                    attr_value = readattr(node) 
-                except AttributeError: 
-                    continue 
-                if attr_value is not None: 
-                    yield attr_value 
-    else: 
-        def select(result): 
-            for node in result: 
-                try: 
-                    attr_value = readattr(node) 
-                except AttributeError: 
-                    continue 
-                if attr_value == value: 
-                    yield attr_value 
+    ).findall
+
+def iterchildren(node, attr_name):
+    # returns an iterable of all child nodes of that name
+    child = getattr(node, attr_name)
+    if child is not None:
+        if type(child) is list:
+            return child
+        else:
+            return [child]
+    else:
+        return ()
+
+def _get_first_or_none(it):
+    try:
+        try:
+            _next = it.next
+        except AttributeError:
+            return next(it)
+        else:
+            return _next()
+    except StopIteration:
+        return None
+
+def type_name(node):
+    return node.__class__.__name__.split('.')[-1]
+
+def parse_func(next, token):
+    name = token[1]
+    token = next()
+    if token[0] != '(':
+        raise ValueError("Expected '(' after function name '%s'" % name)
+    predicate = handle_predicate(next, token)
+    return name, predicate
+
+def handle_func_not(next, token):
+    """
+    not(...)
+    """
+    name, predicate = parse_func(next, token)
+
+    def select(result):
+        for node in result:
+            if _get_first_or_none(predicate([node])) is None:
+                yield node
+    return select
+
+def handle_name(next, token):
+    """
+    /NodeName/
+    or
+    func(...)
+    """
+    name = token[1]
+    if name in functions:
+        return functions[name](next, token)
+    def select(result):
+        for node in result:
+            for attr_name in node.child_attrs:
+                for child in iterchildren(node, attr_name):
+                    if type_name(child) == name:
+                        yield child
+    return select
+
+def handle_star(next, token):
+    """
+    /*/
+    """
+    def select(result):
+        for node in result:
+            for name in node.child_attrs:
+                for child in iterchildren(node, name):
+                    yield child
+    return select
+
+def handle_dot(next, token):
+    """
+    /./
+    """
+    def select(result):
+        return result
+    return select
+
+def handle_descendants(next, token):
+    """
+    //...
+    """
+    token = next()
+    if token[0] == "*":
+        def iter_recursive(node):
+            for name in node.child_attrs:
+                for child in iterchildren(node, name):
+                    yield child
+                    for c in iter_recursive(child):
+                        yield c
+    elif not token[0]:
+        node_name = token[1]
+        def iter_recursive(node):
+            for name in node.child_attrs:
+                for child in iterchildren(node, name):
+                    if type_name(child) == node_name:
+                        yield child
+                    for c in iter_recursive(child):
+                        yield c
+    else:
+        raise ValueError("Expected node name after '//'")
+
+    def select(result):
+        for node in result:
+            for child in iter_recursive(node):
+                yield child
+
+    return select
+
+
+def handle_attribute(next, token):
+    token = next()
+    if token[0]:
+        raise ValueError("Expected attribute name")
+    name = token[1]
+    value = None
+    try:
+        token = next()
+    except StopIteration:
+        pass
+    else:
+        if token[0] == '=':
+            value = parse_path_value(next)
+    readattr = operator.attrgetter(name)
+    if value is None:
+        def select(result):
+            for node in result:
+                try:
+                    attr_value = readattr(node)
+                except AttributeError:
+                    continue
+                if attr_value is not None:
+                    yield attr_value
+    else:
+        def select(result):
+            for node in result:
+                try:
+                    attr_value = readattr(node)
+                except AttributeError:
+                    continue
+                if attr_value == value:
+                    yield attr_value
                 elif (isinstance(attr_value, bytes) and isinstance(value, _unicode) and
                         attr_value == value.encode()):
                     # allow a bytes-to-string comparison too
                     yield attr_value
 
-    return select 
- 
- 
-def parse_path_value(next): 
-    token = next() 
-    value = token[0] 
-    if value: 
-        if value[:1] == "'" or value[:1] == '"': 
-            return value[1:-1] 
-        try: 
-            return int(value) 
-        except ValueError: 
-            pass 
+    return select
+
+
+def parse_path_value(next):
+    token = next()
+    value = token[0]
+    if value:
+        if value[:1] == "'" or value[:1] == '"':
+            return value[1:-1]
+        try:
+            return int(value)
+        except ValueError:
+            pass
     elif token[1].isdigit():
         return int(token[1])
-    else: 
-        name = token[1].lower() 
-        if name == 'true': 
-            return True 
-        elif name == 'false': 
-            return False 
-    raise ValueError("Invalid attribute predicate: '%s'" % value) 
- 
-def handle_predicate(next, token): 
-    token = next() 
-    selector = [] 
-    while token[0] != ']': 
-        selector.append( operations[token[0]](next, token) ) 
-        try: 
-            token = next() 
-        except StopIteration: 
-            break 
-        else: 
-            if token[0] == "/": 
-                token = next() 
- 
-        if not token[0] and token[1] == 'and': 
-            return logical_and(selector, handle_predicate(next, token)) 
- 
-    def select(result): 
-        for node in result: 
-            subresult = iter((node,)) 
-            for select in selector: 
-                subresult = select(subresult) 
-            predicate_result = _get_first_or_none(subresult) 
-            if predicate_result is not None: 
-                yield node 
-    return select 
- 
-def logical_and(lhs_selects, rhs_select): 
-    def select(result): 
-        for node in result: 
-            subresult = iter((node,)) 
-            for select in lhs_selects: 
-                subresult = select(subresult) 
-            predicate_result = _get_first_or_none(subresult) 
-            subresult = iter((node,)) 
-            if predicate_result is not None: 
-                for result_node in rhs_select(subresult): 
-                    yield node 
-    return select 
- 
- 
-operations = { 
-    "@":  handle_attribute, 
-    "":   handle_name, 
-    "*":  handle_star, 
-    ".":  handle_dot, 
-    "//": handle_descendants, 
-    "[":  handle_predicate, 
-    } 
- 
-functions = { 
-    'not' : handle_func_not 
-    } 
- 
-def _build_path_iterator(path): 
-    # parse pattern 
-    stream = iter([ (special,text) 
-                    for (special,text) in path_tokenizer(path) 
-                    if special or text ]) 
-    try: 
-        _next = stream.next 
-    except AttributeError: 
-        # Python 3 
-        def _next(): 
-            return next(stream) 
-    token = _next() 
-    selector = [] 
-    while 1: 
-        try: 
-            selector.append(operations[token[0]](_next, token)) 
-        except StopIteration: 
-            raise ValueError("invalid path") 
-        try: 
-            token = _next() 
-            if token[0] == "/": 
-                token = _next() 
-        except StopIteration: 
-            break 
-    return selector 
- 
-# main module API 
- 
-def iterfind(node, path): 
-    selector_chain = _build_path_iterator(path) 
-    result = iter((node,)) 
-    for select in selector_chain: 
-        result = select(result) 
-    return result 
- 
-def find_first(node, path): 
-    return _get_first_or_none(iterfind(node, path)) 
- 
-def find_all(node, path): 
-    return list(iterfind(node, path)) 
+    else:
+        name = token[1].lower()
+        if name == 'true':
+            return True
+        elif name == 'false':
+            return False
+    raise ValueError("Invalid attribute predicate: '%s'" % value)
+
+def handle_predicate(next, token):
+    token = next()
+    selector = []
+    while token[0] != ']':
+        selector.append( operations[token[0]](next, token) )
+        try:
+            token = next()
+        except StopIteration:
+            break
+        else:
+            if token[0] == "/":
+                token = next()
+
+        if not token[0] and token[1] == 'and':
+            return logical_and(selector, handle_predicate(next, token))
+
+    def select(result):
+        for node in result:
+            subresult = iter((node,))
+            for select in selector:
+                subresult = select(subresult)
+            predicate_result = _get_first_or_none(subresult)
+            if predicate_result is not None:
+                yield node
+    return select
+
+def logical_and(lhs_selects, rhs_select):
+    def select(result):
+        for node in result:
+            subresult = iter((node,))
+            for select in lhs_selects:
+                subresult = select(subresult)
+            predicate_result = _get_first_or_none(subresult)
+            subresult = iter((node,))
+            if predicate_result is not None:
+                for result_node in rhs_select(subresult):
+                    yield node
+    return select
+
+
+operations = {
+    "@":  handle_attribute,
+    "":   handle_name,
+    "*":  handle_star,
+    ".":  handle_dot,
+    "//": handle_descendants,
+    "[":  handle_predicate,
+    }
+
+functions = {
+    'not' : handle_func_not
+    }
+
+def _build_path_iterator(path):
+    # parse pattern
+    stream = iter([ (special,text)
+                    for (special,text) in path_tokenizer(path)
+                    if special or text ])
+    try:
+        _next = stream.next
+    except AttributeError:
+        # Python 3
+        def _next():
+            return next(stream)
+    token = _next()
+    selector = []
+    while 1:
+        try:
+            selector.append(operations[token[0]](_next, token))
+        except StopIteration:
+            raise ValueError("invalid path")
+        try:
+            token = _next()
+            if token[0] == "/":
+                token = _next()
+        except StopIteration:
+            break
+    return selector
+
+# main module API
+
+def iterfind(node, path):
+    selector_chain = _build_path_iterator(path)
+    result = iter((node,))
+    for select in selector_chain:
+        result = select(result)
+    return result
+
+def find_first(node, path):
+    return _get_first_or_none(iterfind(node, path))
+
+def find_all(node, path):
+    return list(iterfind(node, path))