def n_mkfunc(self, node):
"""If the function has a docstring (this is found in the code
constants), pull that out and make it part of the syntax
tree. When generating the source string that AST node rather
than the code field is seen and used.
"""
if self.version >= (3, 7):
code_index = -3
else:
code_index = -2
code = find_code_node(node, code_index).attr
mkfunc_pattr = node[-1].pattr
if isinstance(mkfunc_pattr, tuple):
assert len(mkfunc_pattr, 4) and isinstance(mkfunc_pattr, int)
is_closure = node[-1].pattr[3] != 0
else:
# FIXME: This is what we had before. It is hoaky and probably wrong.
is_closure = mkfunc_pattr == "closure"
if ((not is_closure) and len(code.co_consts) > 0
and isinstance(code.co_consts[0], str)):
docstring_node = SyntaxTree(
"docstring",
[Token("LOAD_STR", has_arg=True, pattr=code.co_consts[0])])
docstring_node.transformed_by = "n_mkfunc"
node = SyntaxTree("mkfunc", node[:-1] + [docstring_node, node[-1]])
node.transformed_by = "n_mkfunc"
return node
def n_mkfunc(self, node):
"""If the function has a docstring (this is found in the code
constants), pull that out and make it part of the syntax
tree. When generating the source string that AST node rather
than the code field is seen and used.
"""
if self.version >= 3.7:
code_index = -3
else:
code_index = -2
code = find_code_node(node, code_index).attr
if (
node[-1].pattr != "closure"
and len(code.co_consts) > 0
and code.co_consts[0] is not None
):
docstring_node = SyntaxTree(
"docstring", [Token("LOAD_STR", has_arg=True, pattr=code.co_consts[0])]
)
docstring_node.transformed_by = "n_mkfunc"
node = SyntaxTree("mkfunc", node[:-1] + [docstring_node, node[-1]])
node.transformed_by = "n_mkfunc"
return node
def n_classdef3(node):
"""Handle "classdef" nonterminal for 3.0 >= version 3.0 <= 3.5
"""
assert 3.0 <= self.version <= 3.5
# class definition ('class X(A,B,C):')
cclass = self.currentclass
# Pick out various needed bits of information
# * class_name - the name of the class
# * subclass_info - the parameters to the class e.g.
# class Foo(bar, baz)
# ----------
# * subclass_code - the code for the subclass body
subclass_info = None
if node == "classdefdeco2":
if self.version <= 3.3:
class_name = node[2][0].attr
else:
class_name = node[1][2].attr
build_class = node
else:
build_class = node[0]
class_name = node[1][0].attr
build_class = node[0]
assert "mkfunc" == build_class[1]
mkfunc = build_class[1]
if mkfunc[0] in ("kwargs", "no_kwargs"):
if 3.0 <= self.version <= 3.2:
for n in mkfunc:
if hasattr(n, "attr") and iscode(n.attr):
subclass_code = n.attr
break
elif n == "expr":
subclass_code = n[0].attr
pass
pass
else:
for n in mkfunc:
if hasattr(n, "attr") and iscode(n.attr):
subclass_code = n.attr
break
pass
pass
if node == "classdefdeco2":
subclass_info = node
else:
subclass_info = node[0]
elif build_class[1][0] == "load_closure":
# Python 3 with closures not functions
load_closure = build_class[1]
if hasattr(load_closure[-3], "attr"):
# Python 3.3 classes with closures work like this.
# Note have to test before 3.2 case because
# index -2 also has an attr.
subclass_code = find_code_node(load_closure, -3).attr
elif hasattr(load_closure[-2], "attr"):
# Python 3.2 works like this
subclass_code = find_code_node(load_closure, -2).attr
else:
raise "Internal Error n_classdef: cannot find class body"
if hasattr(build_class[3], "__len__"):
if not subclass_info:
subclass_info = build_class[3]
elif hasattr(build_class[2], "__len__"):
subclass_info = build_class[2]
else:
raise "Internal Error n_classdef: cannot superclass name"
elif not subclass_info:
if mkfunc[0] in ("no_kwargs", "kwargs"):
subclass_code = mkfunc[1].attr
else:
subclass_code = mkfunc[0].attr
if node == "classdefdeco2":
subclass_info = node
else:
subclass_info = node[0]
if node == "classdefdeco2":
self.write("\n")
else:
self.write("\n\n")
self.currentclass = str(class_name)
self.write(self.indent, "class ", self.currentclass)
self.print_super_classes3(subclass_info)
self.println(":")
# class body
self.indent_more()
self.build_class(subclass_code)
self.indent_less()
self.currentclass = cclass
if len(self.param_stack) > 1:
self.write("\n\n")
else:
self.write("\n\n\n")
self.prune()
