52 lines
1.4 KiB
Python
52 lines
1.4 KiB
Python
from __future__ import unicode_literals
|
|
import sys
|
|
import ast
|
|
import six
|
|
|
|
|
|
class Printer(ast.NodeVisitor):
|
|
|
|
def __init__(self, file=sys.stdout, indent=" "):
|
|
self.indentation = 0
|
|
self.indent_with = indent
|
|
self.f = file
|
|
|
|
# overridden to make the API obvious
|
|
def visit(self, node):
|
|
super(Printer, self).visit(node)
|
|
|
|
def write(self, text):
|
|
self.f.write(six.text_type(text))
|
|
|
|
def generic_visit(self, node):
|
|
|
|
if isinstance(node, list):
|
|
nodestart = "["
|
|
nodeend = "]"
|
|
children = [("", child) for child in node]
|
|
else:
|
|
nodestart = type(node).__name__ + "("
|
|
nodeend = ")"
|
|
children = [(name + "=", value) for name, value in ast.iter_fields(node)]
|
|
|
|
if len(children) > 1:
|
|
self.indentation += 1
|
|
|
|
self.write(nodestart)
|
|
for i, pair in enumerate(children):
|
|
attr, child = pair
|
|
if len(children) > 1:
|
|
self.write("\n" + self.indent_with * self.indentation)
|
|
if isinstance(child, (ast.AST, list)):
|
|
self.write(attr)
|
|
self.visit(child)
|
|
else:
|
|
self.write(attr + repr(child))
|
|
|
|
if i != len(children) - 1:
|
|
self.write(",")
|
|
self.write(nodeend)
|
|
|
|
if len(children) > 1:
|
|
self.indentation -= 1
|