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executable file
·239 lines (213 loc) · 9.45 KB
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#!/usr/bin/env python2.7
import sys
import json as json
import ast
import jsontree
import asttokens
from xml.sax.saxutils import quoteattr
def PrintUsage():
sys.stderr.write("""
Usage:
parse_python.py <file>
""")
exit(1)
def read_file_to_string(filename):
f = open(filename, 'rt')
s = f.read()
f.close()
return s
def parse_file(filename):
global c, d
tree = asttokens.ASTTokens(read_file_to_string(filename), parse=True).tree
json_tree = []
def gen_identifier(identifier, node_type = 'identifier', node=None):
pos = len(json_tree)
json_node = {}
json_tree.append(json_node)
json_node['type'] = node_type
json_node['value'] = identifier
try:
json_node['line_no'] = str(node.lineno)
json_node['col'] = str(node.col_offset)
except:
try:
json_node['line_no'] = str(node.first_token.start[0])
json_node['col'] = str(node.first_token.start[1])
except:
pass
return pos
def traverse_list(l, node_type = 'list', node = None):
pos = len(json_tree)
json_node = {}
json_tree.append(json_node)
json_node['type'] = node_type
try:
json_node['line_no'] = str(node.lineno)
json_node['col'] = str(node.col_offset)
except:
try:
json_node['line_no'] = str(node.first_token.start[0])
json_node['col'] = str(node.first_token.start[1])
except: pass
children = []
for item in l:
children.append(traverse(item))
if (len(children) != 0):
json_node['children'] = children
return pos
def traverse(node):
pos = len(json_tree)
json_node = {}
json_tree.append(json_node)
json_node['type'] = type(node).__name__
try:
json_node['line_no'] = str(node.lineno)
json_node['col'] = str(node.col_offset)
except:
try:
json_node['line_no'] = str(node.first_token.start[0])
json_node['col'] = str(node.first_token.start[1])
except: pass
children = []
if isinstance(node, ast.Name):
json_node['value'] = node.id
elif isinstance(node, ast.Num):
json_node['value'] = unicode(node.n)
elif isinstance(node, ast.Str):
json_node['value'] = node.s.decode('utf-8')
elif isinstance(node, ast.alias):
json_node['value'] = unicode(node.name)
if node.asname:
children.append(gen_identifier(node.asname, node = node))
elif isinstance(node, ast.FunctionDef):
json_node['value'] = unicode(node.name)
elif isinstance(node, ast.ClassDef):
json_node['value'] = unicode(node.name)
elif isinstance(node, ast.ImportFrom):
if node.module:
json_node['value'] = unicode(node.module)
elif isinstance(node, ast.Global):
for n in node.names:
children.append(gen_identifier(n, node = node))
elif isinstance(node, ast.keyword):
json_node['value'] = unicode(node.arg)
# Process children.
if isinstance(node, ast.For):
children.append(traverse(node.target))
children.append(traverse(node.iter))
children.append(traverse_list(node.body, 'body', node))
if node.orelse:
children.append(traverse_list(node.orelse, 'orelse', node))
elif isinstance(node, ast.If) or isinstance(node, ast.While):
children.append(traverse(node.test))
children.append(traverse_list(node.body, 'body', node))
if node.orelse:
children.append(traverse_list(node.orelse, 'orelse', node))
elif isinstance(node, ast.With):
children.append(traverse(node.context_expr))
if node.optional_vars:
children.append(traverse(node.optional_vars))
children.append(traverse_list(node.body, 'body', node))
elif isinstance(node, ast.TryExcept):
children.append(traverse_list(node.body, 'body', node))
children.append(traverse_list(node.handlers, 'handlers', node))
if node.orelse:
children.append(traverse_list(node.orelse, 'orelse', node))
elif isinstance(node, ast.TryFinally):
children.append(traverse_list(node.body, 'body', node))
children.append(traverse_list(node.finalbody, 'finalbody', node))
elif isinstance(node, ast.arguments):
children.append(traverse_list(node.args, 'args', node))
children.append(traverse_list(node.defaults, 'defaults', node))
if node.vararg:
children.append(gen_identifier(node.vararg, 'vararg', node))
if node.kwarg:
children.append(gen_identifier(node.kwarg, 'kwarg', node))
elif isinstance(node, ast.ExceptHandler):
if node.type:
children.append(traverse_list([node.type], 'type', node))
if node.name:
children.append(traverse_list([node.name], 'name', node))
children.append(traverse_list(node.body, 'body', node))
elif isinstance(node, ast.ClassDef):
children.append(traverse_list(node.bases, 'bases', node))
children.append(traverse_list(node.body, 'body', node))
children.append(traverse_list(node.decorator_list, 'decorator_list', node))
elif isinstance(node, ast.FunctionDef):
children.append(traverse(node.args))
children.append(traverse_list(node.body, 'body', node))
children.append(traverse_list(node.decorator_list, 'decorator_list', node))
else:
# Default handling: iterate over children.
for child in ast.iter_child_nodes(node):
if isinstance(child, ast.expr_context) or isinstance(child, ast.operator) or isinstance(child, ast.boolop) or isinstance(child, ast.unaryop) or isinstance(child, ast.cmpop):
# Directly include expr_context, and operators into the type instead of creating a child.
json_node['type'] = json_node['type'] + type(child).__name__
else:
children.append(traverse(child))
if isinstance(node, ast.Attribute):
children.append(gen_identifier(node.attr, 'attr', node))
if (len(children) != 0):
json_node['children'] = children
return pos
traverse(tree)
return json.dumps(json_tree, separators=(',', ':'), ensure_ascii=False)
def write(i, indent_level = 0):
global lines
node = tree[i]
if "value" in node:
if "line_no" in node:
if "end_col" in node:
lines.append("\t"*indent_level + "<" + node['type'] + ' value=' + quoteEscape(node["value"]) + ' lineno="' + str(node['line_no']) + '" col="' + str(node['col']) + '" end_line_no="' + str(node['end_line_no']) + '" end_col="' + str(node['end_col']) + '">')
else:
lines.append("\t"*indent_level + "<" + node['type'] + ' value=' + quoteEscape(node["value"]) + ' lineno="' + str(node['line_no']) + '" col="' + str(node['col']) + '">')
else:
lines.append("\t"*indent_level + "<" + node['type'] + ' value=' + quoteEscape(node["value"]) + '>')
else:
if "line_no" in node:
if "end_col" in node:
lines.append("\t"*indent_level + "<" + node['type'] + ' lineno="' + str(node['line_no']) + '" col="' + str(node['col']) + '" end_line_no="' + str(node['end_line_no']) + '" end_col="' + str(node['end_col']) + '">')
else:
lines.append("\t"*indent_level + "<" + node['type'] + ' lineno="' + str(node['line_no']) + '" col="' + str(node['col']) + '">')
else:
lines.append("\t"*indent_level + "<" + node['type'] + ">")
for child in node["children"]:
write(int(child), indent_level + 1)
lines.append("\t"*indent_level + "</" + node["type"] + ">")
def quoteEscape(x):
return quoteattr(x);
def getFirstNonChildInd(tree, index):
def getHelper(index):
if len(tree[index]['children']) == 0:
return index
return max([getHelper(i) for i in tree[index]['children']])
return getHelper(index) + 1
def getLast(text, i):
tree[i]["end_line_no"] = len(text.split('\n'))
tree[i]["end_col"] = len(text.split('\n')[-1])
def addEnd(tree, i, text):
try:
first_non_child = getFirstNonChildInd(tree, i)
first_non_child_start = tree[first_non_child]["line_no"]
first_non_child_col = tree[first_non_child]["col"]
tree[i]["end_line_no"] = int(first_non_child_start)
tree[i]["end_col"] = int(first_non_child_col)
if first_non_child_col == "-1":
tree[first_non_child]["col"] = "0"
tree[i]["end_col"] = "0"
except:
getLast(text, i)
for child in tree[i]['children']:
addEnd(tree, child, text)
if __name__ == "__main__":
try:
text = open(sys.argv[1], "r+").read()
json_file = parse_file(sys.argv[1])
tree = jsontree.JSONTreeDecoder().decode(json_file)
x = tree[0]
lines = []
addEnd(tree, 0, text)
write(0)
print('\n'.join(lines))
except (UnicodeEncodeError, UnicodeDecodeError):
pass