android_frameworks_base/tools/apilint/deprecated_at_birth.py
Jeff Sharkey 13bc791d51 Reintroduce "Deprecated at Birth" linter.
Earlier this year the "apilint.py" script was removed from the build,
since it's been replaced by Metalava.  However, several features
haven't been ported yet, so this change revives them to support the
SDK finalization process.

This change also updates the script to handle "Signature format: 2.0"
files, and reads the API surface from a directory which contains
several ".txt" files to support the new Mainline API structuring.

Bug: 189224267
Test: manual
Change-Id: Ifc4c24a7e159db6725897800d67947d1fd8b9880
2021-05-26 12:07:25 -06:00

314 lines
9.7 KiB
Python

#!/usr/bin/env python
# Copyright (C) 2021 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the 'License');
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an 'AS IS' BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Usage: deprecated_at_birth.py path/to/next/ path/to/previous/
Usage: deprecated_at_birth.py prebuilts/sdk/31/public/api/ prebuilts/sdk/30/public/api/
"""
import re, sys, os, collections, traceback, argparse
BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8)
def format(fg=None, bg=None, bright=False, bold=False, dim=False, reset=False):
# manually derived from http://en.wikipedia.org/wiki/ANSI_escape_code#Codes
codes = []
if reset: codes.append("0")
else:
if not fg is None: codes.append("3%d" % (fg))
if not bg is None:
if not bright: codes.append("4%d" % (bg))
else: codes.append("10%d" % (bg))
if bold: codes.append("1")
elif dim: codes.append("2")
else: codes.append("22")
return "\033[%sm" % (";".join(codes))
def ident(raw):
"""Strips superficial signature changes, giving us a strong key that
can be used to identify members across API levels."""
raw = raw.replace(" deprecated ", " ")
raw = raw.replace(" synchronized ", " ")
raw = raw.replace(" final ", " ")
raw = re.sub("<.+?>", "", raw)
raw = re.sub("@[A-Za-z]+ ", "", raw)
raw = re.sub("@[A-Za-z]+\(.+?\) ", "", raw)
if " throws " in raw:
raw = raw[:raw.index(" throws ")]
return raw
class Field():
def __init__(self, clazz, line, raw, blame):
self.clazz = clazz
self.line = line
self.raw = raw.strip(" {;")
self.blame = blame
raw = raw.split()
self.split = list(raw)
raw = [ r for r in raw if not r.startswith("@") ]
for r in ["method", "field", "public", "protected", "static", "final", "abstract", "default", "volatile", "transient"]:
while r in raw: raw.remove(r)
self.typ = raw[0]
self.name = raw[1].strip(";")
if len(raw) >= 4 and raw[2] == "=":
self.value = raw[3].strip(';"')
else:
self.value = None
self.ident = ident(self.raw)
def __hash__(self):
return hash(self.raw)
def __repr__(self):
return self.raw
class Method():
def __init__(self, clazz, line, raw, blame):
self.clazz = clazz
self.line = line
self.raw = raw.strip(" {;")
self.blame = blame
# drop generics for now
raw = re.sub("<.+?>", "", raw)
raw = re.split("[\s(),;]+", raw)
for r in ["", ";"]:
while r in raw: raw.remove(r)
self.split = list(raw)
raw = [ r for r in raw if not r.startswith("@") ]
for r in ["method", "field", "public", "protected", "static", "final", "abstract", "default", "volatile", "transient"]:
while r in raw: raw.remove(r)
self.typ = raw[0]
self.name = raw[1]
self.args = []
self.throws = []
target = self.args
for r in raw[2:]:
if r == "throws": target = self.throws
else: target.append(r)
self.ident = ident(self.raw)
def __hash__(self):
return hash(self.raw)
def __repr__(self):
return self.raw
class Class():
def __init__(self, pkg, line, raw, blame):
self.pkg = pkg
self.line = line
self.raw = raw.strip(" {;")
self.blame = blame
self.ctors = []
self.fields = []
self.methods = []
raw = raw.split()
self.split = list(raw)
if "class" in raw:
self.fullname = raw[raw.index("class")+1]
elif "enum" in raw:
self.fullname = raw[raw.index("enum")+1]
elif "interface" in raw:
self.fullname = raw[raw.index("interface")+1]
elif "@interface" in raw:
self.fullname = raw[raw.index("@interface")+1]
else:
raise ValueError("Funky class type %s" % (self.raw))
if "extends" in raw:
self.extends = raw[raw.index("extends")+1]
self.extends_path = self.extends.split(".")
else:
self.extends = None
self.extends_path = []
self.fullname = self.pkg.name + "." + self.fullname
self.fullname_path = self.fullname.split(".")
self.name = self.fullname[self.fullname.rindex(".")+1:]
def __hash__(self):
return hash((self.raw, tuple(self.ctors), tuple(self.fields), tuple(self.methods)))
def __repr__(self):
return self.raw
class Package():
def __init__(self, line, raw, blame):
self.line = line
self.raw = raw.strip(" {;")
self.blame = blame
raw = raw.split()
self.name = raw[raw.index("package")+1]
self.name_path = self.name.split(".")
def __repr__(self):
return self.raw
def _parse_stream(f, api={}):
line = 0
pkg = None
clazz = None
blame = None
re_blame = re.compile("^([a-z0-9]{7,}) \(<([^>]+)>.+?\) (.+?)$")
for raw in f:
line += 1
raw = raw.rstrip()
match = re_blame.match(raw)
if match is not None:
blame = match.groups()[0:2]
raw = match.groups()[2]
else:
blame = None
if raw.startswith("package"):
pkg = Package(line, raw, blame)
elif raw.startswith(" ") and raw.endswith("{"):
clazz = Class(pkg, line, raw, blame)
api[clazz.fullname] = clazz
elif raw.startswith(" ctor"):
clazz.ctors.append(Method(clazz, line, raw, blame))
elif raw.startswith(" method"):
clazz.methods.append(Method(clazz, line, raw, blame))
elif raw.startswith(" field"):
clazz.fields.append(Field(clazz, line, raw, blame))
return api
def _parse_stream_path(path):
api = {}
print "Parsing", path
for f in os.listdir(path):
f = os.path.join(path, f)
if not os.path.isfile(f): continue
if not f.endswith(".txt"): continue
if f.endswith("removed.txt"): continue
print "\t", f
with open(f) as s:
api = _parse_stream(s, api)
print "Parsed", len(api), "APIs"
print
return api
class Failure():
def __init__(self, sig, clazz, detail, error, rule, msg):
self.sig = sig
self.error = error
self.rule = rule
self.msg = msg
if error:
self.head = "Error %s" % (rule) if rule else "Error"
dump = "%s%s:%s %s" % (format(fg=RED, bg=BLACK, bold=True), self.head, format(reset=True), msg)
else:
self.head = "Warning %s" % (rule) if rule else "Warning"
dump = "%s%s:%s %s" % (format(fg=YELLOW, bg=BLACK, bold=True), self.head, format(reset=True), msg)
self.line = clazz.line
blame = clazz.blame
if detail is not None:
dump += "\n in " + repr(detail)
self.line = detail.line
blame = detail.blame
dump += "\n in " + repr(clazz)
dump += "\n in " + repr(clazz.pkg)
dump += "\n at line " + repr(self.line)
if blame is not None:
dump += "\n last modified by %s in %s" % (blame[1], blame[0])
self.dump = dump
def __repr__(self):
return self.dump
failures = {}
def _fail(clazz, detail, error, rule, msg):
"""Records an API failure to be processed later."""
global failures
sig = "%s-%s-%s" % (clazz.fullname, repr(detail), msg)
sig = sig.replace(" deprecated ", " ")
failures[sig] = Failure(sig, clazz, detail, error, rule, msg)
def warn(clazz, detail, rule, msg):
_fail(clazz, detail, False, rule, msg)
def error(clazz, detail, rule, msg):
_fail(clazz, detail, True, rule, msg)
if __name__ == "__main__":
next_path = sys.argv[1]
prev_path = sys.argv[2]
next_api = _parse_stream_path(next_path)
prev_api = _parse_stream_path(prev_path)
# Remove all existing things so we're left with new
for prev_clazz in prev_api.values():
if prev_clazz.fullname not in next_api: continue
cur_clazz = next_api[prev_clazz.fullname]
sigs = { i.ident: i for i in prev_clazz.ctors }
cur_clazz.ctors = [ i for i in cur_clazz.ctors if i.ident not in sigs ]
sigs = { i.ident: i for i in prev_clazz.methods }
cur_clazz.methods = [ i for i in cur_clazz.methods if i.ident not in sigs ]
sigs = { i.ident: i for i in prev_clazz.fields }
cur_clazz.fields = [ i for i in cur_clazz.fields if i.ident not in sigs ]
# Forget about class entirely when nothing new
if len(cur_clazz.ctors) == 0 and len(cur_clazz.methods) == 0 and len(cur_clazz.fields) == 0:
del next_api[prev_clazz.fullname]
for clazz in next_api.values():
if "@Deprecated " in clazz.raw and not clazz.fullname in prev_api:
error(clazz, None, None, "Found API deprecation at birth")
if "@Deprecated " in clazz.raw: continue
for i in clazz.ctors + clazz.methods + clazz.fields:
if "@Deprecated " in i.raw:
error(clazz, i, None, "Found API deprecation at birth " + i.ident)
print "%s Deprecated at birth %s\n" % ((format(fg=WHITE, bg=BLUE, bold=True),
format(reset=True)))
for f in sorted(failures):
print failures[f]
print