Apilint: Lint missing nullability annotations (80545ef5) · Commits · e / os / android_frameworks_base

tools/apilint/apilint.py

+63 −14

Original line number	Diff line number	Diff line
		@@ -79,6 +79,7 @@ class Field():
		self.value = raw[3].strip(';"')
		else:
		self.value = None
		self.annotations = []

		self.ident = "-".join((self.typ, self.name, self.value or ""))

		@@ -88,6 +89,18 @@ class Field():
		def __repr__(self):
		return self.raw


		class Argument(object):

		__slots__ = ["type", "annotations", "name", "default"]

		def __init__(self, type):
		self.type = type
		self.annotations = []
		self.name = None
		self.default = None


		class Method():
		def __init__(self, clazz, line, raw, blame, sig_format = 1):
		self.clazz = clazz
		@@ -118,21 +131,24 @@ class Method():
		self.name = raw[1]

		# parse args
		self.args = []
		self.detailed_args = []
		for arg in re.split(",\s*", raw_args):
		arg = re.split("\s", arg)
		# ignore annotations for now
		arg = [ a for a in arg if not a.startswith("@") ]
		if len(arg[0]) > 0:
		self.args.append(arg[0])
		self.detailed_args.append(Argument(arg[0]))

		# parse throws
		self.throws = []
		for throw in re.split(",\s*", raw_throws):
		self.throws.append(throw)

		self.annotations = []
		else:
		raise ValueError("Unknown signature format: " + sig_format)

		self.args = map(lambda a: a.type, self.detailed_args)
		self.ident = "-".join((self.typ, self.name, "-".join(self.args)))

		def sig_matches(self, typ, name, args):
		@@ -312,10 +328,10 @@ class V2LineParser(object):
		method.split = []
		kind = self.parse_one_of("ctor", "method")
		method.split.append(kind)
		annotations = self.parse_annotations()
		method.annotations = self.parse_annotations()
		method.split.extend(self.parse_modifiers())
		self.parse_matching_paren("<", ">")
		if "@Deprecated" in annotations:
		if "@Deprecated" in method.annotations:
		method.split.append("deprecated")
		if kind == "ctor":
		method.typ = "ctor"
		@@ -325,7 +341,7 @@ class V2LineParser(object):
		method.name = self.parse_name()
		method.split.append(method.name)
		self.parse_token("(")
		method.args = self.parse_args()
		method.detailed_args = self.parse_args()
		self.parse_token(")")
		method.throws = self.parse_throws()
		if "@interface" in method.clazz.split:
		@@ -360,8 +376,8 @@ class V2LineParser(object):
		def parse_into_field(self, field):
		kind = self.parse_one_of(*V2LineParser.FIELD_KINDS)
		field.split = [kind]
		annotations = self.parse_annotations()
		if "@Deprecated" in annotations:
		field.annotations = self.parse_annotations()
		if "@Deprecated" in field.annotations:
		field.split.append("deprecated")
		field.split.extend(self.parse_modifiers())
		field.typ = self.parse_type()
		@@ -488,15 +504,16 @@ class V2LineParser(object):

		def parse_arg(self):
		self.parse_if("vararg") # kotlin vararg
		self.parse_annotations()
		type = self.parse_arg_type()
		annotations = self.parse_annotations()
		arg = Argument(self.parse_arg_type())
		arg.annotations = annotations
		l = self.lookahead()
		if l != "," and l != ")":
		if self.lookahead() != '=':
		self.parse_token() # kotlin argument name
		arg.name = self.parse_token() # kotlin argument name
		if self.parse_if('='): # kotlin default value
		self.parse_expression()
		return type
		arg.default = self.parse_expression()
		return arg

		def parse_expression(self):
		while not self.lookahead() in [')', ',', ';']:
		@@ -593,7 +610,7 @@ def _parse_stream_to_generator(f):
		blame = None
		sig_format = 1

		re_blame = re.compile("^([a-z0-9]{7,}) $<([^>]+)>.+?$ (.+?)$")
		re_blame = re.compile(r"^(\^?[a-z0-9]{7,}) $<([^>]+)>.+?$ (.+?)$")

		field_prefixes = map(lambda kind: " %s" % (kind,), V2LineParser.FIELD_KINDS)
		def startsWithFieldPrefix(raw):
		@@ -608,11 +625,13 @@ def _parse_stream_to_generator(f):
		match = re_blame.match(raw)
		if match is not None:
		blame = match.groups()[0:2]
		if blame[0].startswith("^"): # Outside of blame range
		blame = None
		raw = match.groups()[2]
		else:
		blame = None

		if line == 1 and raw.startswith("// Signature format: "):
		if line == 1 and V2Tokenizer.SIGNATURE_PREFIX in raw:
		sig_format_string = raw[len(V2Tokenizer.SIGNATURE_PREFIX):]
		if sig_format_string in ["2.0", "3.0"]:
		sig_format = 2
		@@ -1871,6 +1890,35 @@ def verify_numbers(clazz):
		if arg in discouraged:
		warn(clazz, m, "FW12", "Should avoid odd sized primitives; use int instead")

		PRIMITIVES = {"void", "int", "float", "boolean", "short", "char", "byte", "long", "double"}

		def verify_nullability(clazz):
		"""Catches missing nullability annotations"""

		for f in clazz.fields:
		if f.value is not None and 'static' in f.split and 'final' in f.split:
		continue # Nullability of constants can be inferred.
		if f.typ not in PRIMITIVES and not has_nullability(f.annotations):
		error(clazz, f, "M12", "Field must be marked either @NonNull or @Nullable")

		for c in clazz.ctors:
		verify_nullability_args(clazz, c)

		for m in clazz.methods:
		if m.name == "writeToParcel" or m.name == "onReceive":
		continue # Parcelable.writeToParcel() and BroadcastReceiver.onReceive() are not yet annotated

		if m.typ not in PRIMITIVES and not has_nullability(m.annotations):
		error(clazz, m, "M12", "Return value must be marked either @NonNull or @Nullable")
		verify_nullability_args(clazz, m)

		def verify_nullability_args(clazz, m):
		for i, arg in enumerate(m.detailed_args):
		if arg.type not in PRIMITIVES and not has_nullability(arg.annotations):
		error(clazz, m, "M12", "Argument %d must be marked either @NonNull or @Nullable" % (i+1,))

		def has_nullability(annotations):
		return "@NonNull" in annotations or "@Nullable" in annotations

		def verify_singleton(clazz):
		"""Catch singleton objects with constructors."""
		@@ -1959,6 +2007,7 @@ def examine_clazz(clazz):
		verify_pfd(clazz)
		verify_numbers(clazz)
		verify_singleton(clazz)
		verify_nullability(clazz)


		def examine_stream(stream, base_stream=None, in_classes_with_base=[], out_classes_with_base=None):

tools/apilint/apilint_test.py

+11 −8

Original line number	Diff line number	Diff line
		@@ -88,20 +88,22 @@ class UtilTests(unittest.TestCase):


		faulty_current_txt = """
		// Signature format: 2.0
		package android.app {
		public final class Activity {
		}

		public final class WallpaperColors implements android.os.Parcelable {
		ctor public WallpaperColors(android.os.Parcel);
		ctor public WallpaperColors(@NonNull android.os.Parcel);
		method public int describeContents();
		method public void writeToParcel(android.os.Parcel, int);
		field public static final android.os.Parcelable.Creator<android.app.WallpaperColors> CREATOR;
		method public void writeToParcel(@NonNull android.os.Parcel, int);
		field @NonNull public static final android.os.Parcelable.Creator<android.app.WallpaperColors> CREATOR;
		}
		}
		""".split('\n')
		""".strip().split('\n')

		ok_current_txt = """
		// Signature format: 2.0
		package android.app {
		public final class Activity {
		}
		@@ -109,19 +111,20 @@ package android.app {
		public final class WallpaperColors implements android.os.Parcelable {
		ctor public WallpaperColors();
		method public int describeContents();
		method public void writeToParcel(android.os.Parcel, int);
		field public static final android.os.Parcelable.Creator<android.app.WallpaperColors> CREATOR;
		method public void writeToParcel(@NonNull android.os.Parcel, int);
		field @NonNull public static final android.os.Parcelable.Creator<android.app.WallpaperColors> CREATOR;
		}
		}
		""".split('\n')
		""".strip().split('\n')

		system_current_txt = """
		// Signature format: 2.0
		package android.app {
		public final class WallpaperColors implements android.os.Parcelable {
		method public int getSomething();
		}
		}
		""".split('\n')
		""".strip().split('\n')