def visit_Attribute(self, node):
"""Get attribute with fallback to dictionary lookup.
Note: Variables starting with an underscore are exempt
(reserved for internal use); as are the default system symbols.
"""
if isinstance(node.value, ast.Name) and \
(node.value.id.startswith('_') or node.value.id in SYMBOLS):
return ASTTransformer.visit_Attribute(self, node)
## This should be spellable as
## return ast.Call(
## ast.Name(config.SYMBOLS.lookup_attr, ast.Load()),
## [self.visit(node.value), ast.Str(node.attr)],
## [], None, None)
## .. except Python 2.5 doesn't allow it.
call = ast.Call()
name = ast.Name()
name.id = config.SYMBOLS.lookup_attr
name.ctx = ast.Load()
call.func = name
string = ast.Str()
string.s = node.attr
args = [self.visit(node.value), string]
call.args = args
call.keywords = []
call.starargs = None
call.kwargs = None
return call
def visit_Attribute(self, node):
"""Get attribute with fallback to dictionary lookup.
Note: Variables starting with an underscore are exempt
(reserved for internal use); as are the default system symbols.
"""
if isinstance(node.value, ast.Name) and \
(node.value.id.startswith('_') or node.value.id in SYMBOLS):
return ASTTransformer.visit_Attribute(self, node)
## This should be spellable as
## return ast.Call(
## ast.Name(config.SYMBOLS.lookup_attr, ast.Load()),
## [self.visit(node.value), ast.Str(node.attr)],
## [], None, None)
## .. except Python 2.5 doesn't allow it.
call = ast.Call()
name = ast.Name()
name.id = config.SYMBOLS.lookup_attr
name.ctx = ast.Load()
call.func = name
string = ast.Str()
string.s = node.attr
args = [self.visit(node.value), string]
call.args = args
call.keywords = []
call.starargs = None
call.kwargs = None
return call
