Merge pull request #3182 from ciscorn/extract_pyi

Improve .pyi generation
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Scott Shawcroft 2020-07-21 13:13:12 -07:00 committed by GitHub
commit da1c7f2a79
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2 changed files with 112 additions and 32 deletions

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@ -37,7 +37,7 @@ jobs:
run: |
sudo apt-get install -y eatmydata
sudo eatmydata apt-get install -y gettext librsvg2-bin mingw-w64
pip install requests sh click setuptools cpp-coveralls "Sphinx<4" sphinx-rtd-theme recommonmark sphinx-autoapi sphinxcontrib-svg2pdfconverter polib pyyaml astroid
pip install requests sh click setuptools cpp-coveralls "Sphinx<4" sphinx-rtd-theme recommonmark sphinx-autoapi sphinxcontrib-svg2pdfconverter polib pyyaml astroid isort
- name: Versions
run: |
gcc --version

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@ -2,24 +2,91 @@
#
# SPDX-License-Identifier: MIT
import ast
import os
import re
import sys
import astroid
import traceback
top_level = sys.argv[1].strip("/")
stub_directory = sys.argv[2]
import isort
IMPORTS_IGNORE = frozenset({'int', 'float', 'bool', 'str', 'bytes', 'tuple', 'list', 'set', 'dict', 'bytearray', 'file', 'buffer'})
IMPORTS_TYPING = frozenset({'Any', 'Optional', 'Union', 'Tuple', 'List', 'Sequence'})
IMPORTS_TYPESHED = frozenset({'ReadableBuffer', 'WritableBuffer'})
def is_any(node):
node_type = type(node)
if node is None:
return True
if node_type == ast.Name and node.id == "Any":
return True
if (node_type == ast.Attribute and type(node.value) == ast.Name
and node.value.id == "typing" and node.attr == "Any"):
return True
return False
def report_missing_annotations(tree):
for node in ast.walk(tree):
node_type = type(node)
if node_type == ast.AnnAssign:
if is_any(node.annotation):
print(f"Missing attribute type on line {node.lineno}")
elif node_type == ast.arg:
if is_any(node.annotation) and node.arg != "self":
print(f"Missing argument type: {node.arg} on line {node.lineno}")
elif node_type == ast.FunctionDef:
if is_any(node.returns) and node.name != "__init__":
print(f"Missing return type: {node.name} on line {node.lineno}")
def extract_imports(tree):
modules = set()
typing = set()
typeshed = set()
def collect_annotations(anno_tree):
if anno_tree is None:
return
for node in ast.walk(anno_tree):
node_type = type(node)
if node_type == ast.Name:
if node.id in IMPORTS_IGNORE:
continue
elif node.id in IMPORTS_TYPING:
typing.add(node.id)
elif node.id in IMPORTS_TYPESHED:
typeshed.add(node.id)
elif not node.id[0].isupper():
modules.add(node.id)
for node in ast.walk(tree):
node_type = type(node)
if (node_type == ast.AnnAssign) or (node_type == ast.arg):
collect_annotations(node.annotation)
elif node_type == ast.FunctionDef:
collect_annotations(node.returns)
return {
"modules": sorted(modules),
"typing": sorted(typing),
"typeshed": sorted(typeshed),
}
def convert_folder(top_level, stub_directory):
ok = 0
total = 0
filenames = sorted(os.listdir(top_level))
pyi_lines = []
for filename in filenames:
full_path = os.path.join(top_level, filename)
file_lines = []
if os.path.isdir(full_path):
mok, mtotal = convert_folder(full_path, os.path.join(stub_directory, filename))
(mok, mtotal) = convert_folder(full_path, os.path.join(stub_directory, filename))
ok += mok
total += mtotal
elif filename.endswith(".c"):
@ -44,44 +111,57 @@ def convert_folder(top_level, stub_directory):
pyi_lines.extend(file_lines)
if not pyi_lines:
return ok, total
return (ok, total)
stub_filename = os.path.join(stub_directory, "__init__.pyi")
print(stub_filename)
stub_contents = "".join(pyi_lines)
os.makedirs(stub_directory, exist_ok=True)
with open(stub_filename, "w") as f:
f.write(stub_contents)
# Validate that the module is a parseable stub.
total += 1
try:
tree = astroid.parse(stub_contents)
for i in tree.body:
if 'name' in i.__dict__:
print(i.__dict__['name'])
for j in i.body:
if isinstance(j, astroid.scoped_nodes.FunctionDef):
if None in j.args.__dict__['annotations']:
print(f"Missing parameter type: {j.__dict__['name']} on line {j.__dict__['lineno']}\n")
if j.returns:
if 'Any' in j.returns.__dict__.values():
print(f"Missing return type: {j.__dict__['name']} on line {j.__dict__['lineno']}")
elif isinstance(j, astroid.node_classes.AnnAssign):
if 'name' in j.__dict__['annotation'].__dict__:
if j.__dict__['annotation'].__dict__['name'] == 'Any':
print(f"missing attribute type on line {j.__dict__['lineno']}")
tree = ast.parse(stub_contents)
imports = extract_imports(tree)
report_missing_annotations(tree)
ok += 1
except astroid.exceptions.AstroidSyntaxError as e:
e = e.__cause__
except SyntaxError as e:
traceback.print_exception(type(e), e, e.__traceback__)
return (ok, total)
# Add import statements
import_lines = ["from __future__ import annotations"]
import_lines.extend(f"import {m}" for m in imports["modules"])
import_lines.append("from typing import " + ", ".join(imports["typing"]))
import_lines.append("from _typeshed import " + ", ".join(imports["typeshed"]))
import_body = "\n".join(import_lines)
m = re.match(r'(\s*""".*?""")', stub_contents, flags=re.DOTALL)
if m:
stub_contents = m.group(1) + "\n\n" + import_body + "\n\n" + stub_contents[m.end():]
else:
stub_contents = import_body + "\n\n" + stub_contents
stub_contents = isort.code(stub_contents)
# Adjust blank lines
stub_contents = re.sub(r"\n+class", "\n\n\nclass", stub_contents)
stub_contents = re.sub(r"\n+def", "\n\n\ndef", stub_contents)
stub_contents = re.sub(r"\n+^(\s+)def", lambda m: f"\n\n{m.group(1)}def", stub_contents, flags=re.M)
stub_contents = stub_contents.strip() + "\n"
os.makedirs(stub_directory, exist_ok=True)
with open(stub_filename, "w") as f:
f.write(stub_contents)
print()
return ok, total
return (ok, total)
ok, total = convert_folder(top_level, stub_directory)
print(f"{ok} ok out of {total}")
if __name__ == "__main__":
top_level = sys.argv[1].strip("/")
stub_directory = sys.argv[2]
if ok != total:
sys.exit(total - ok)
(ok, total) = convert_folder(top_level, stub_directory)
print(f"Parsing .pyi files: {total - ok} failed, {ok} passed")
if ok != total:
sys.exit(total - ok)