88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License.
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import ast
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import json
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import sys
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class Visitor(ast.NodeVisitor):
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def __init__(self):
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self.symbols = {"classes": [], "methods": [], "functions": []}
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def visit_Module(self, node):
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self.visitChildren(node)
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def visitChildren(self, node, namespace=""):
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for child in node.body:
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if isinstance(child, ast.FunctionDef):
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self.visitDef(child, namespace)
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if isinstance(child, ast.ClassDef):
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self.visitClassDef(child, namespace)
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try:
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if isinstance(child, ast.AsyncFunctionDef):
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self.visitDef(child, namespace)
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except Exception:
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pass
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def visitDef(self, node, namespace=""):
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symbol = "functions" if namespace == "" else "methods"
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self.symbols[symbol].append(self.getDataObject(node, namespace))
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def visitClassDef(self, node, namespace=""):
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self.symbols["classes"].append(self.getDataObject(node, namespace))
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if len(namespace) > 0:
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namespace = "{0}::{1}".format(namespace, node.name)
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else:
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namespace = node.name
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self.visitChildren(node, namespace)
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def getDataObject(self, node, namespace=""):
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end_position = self.getEndPosition(node)
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return {
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"namespace": namespace,
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"name": node.name,
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"range": {
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"start": {"line": node.lineno - 1, "character": node.col_offset},
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"end": {"line": end_position[0], "character": end_position[1]},
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},
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}
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def getEndPosition(self, node):
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if not hasattr(node, "body") or len(node.body) == 0:
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return (node.lineno - 1, node.col_offset)
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return self.getEndPosition(node.body[-1])
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def provide_symbols(source):
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"""Provides a list of all symbols in provided code.
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The list comprises of 3-item tuples that contain the starting line number,
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ending line number and whether the statement is a single line.
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"""
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tree = ast.parse(source)
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visitor = Visitor()
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visitor.visit(tree)
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sys.stdout.write(json.dumps(visitor.symbols))
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sys.stdout.flush()
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if __name__ == "__main__":
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if len(sys.argv) == 3:
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contents = sys.argv[2]
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else:
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with open(sys.argv[1], "r") as source:
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contents = source.read()
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try:
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default_encoding = sys.getdefaultencoding()
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encoded_contents = contents.encode(default_encoding, "surrogateescape")
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contents = encoded_contents.decode(default_encoding, "replace")
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except (UnicodeError, LookupError):
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pass
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if isinstance(contents, bytes):
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contents = contents.decode("utf8")
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provide_symbols(contents)
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