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[nullsafe] Error reporting: recommend non-nullable alternarives for known nullable methods

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Summary:
This will help making error reporting more actionable.

Often methods that are nullable in general (like View.findViewById) are used as not-nullable due to app-invariants. In such cases suggesting a non-nullable alternative that does an assertion under the hood makes the error report more actionable and provides necessary guidance with respect to coding best practices

Follow up will include adding more methods to models.
If this goes well, we might support it in user-defined area (nullability
repository)

Reviewed By: artempyanykh

Differential Revision: D20001416

fbshipit-source-id: 46f03467c
master
Mitya Lyubarskiy 5 years ago committed by Facebook Github Bot
parent 50e5bfd32f
commit f57dc78679
10 changed files with 536 additions and 376 deletions
Show Stats Download Patch File Download Diff File

19
infer/models/java/src/android/view/View.java
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@ -0,0 +1,19 @@
/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
package android.view;
public class View {
public <T extends View> T findViewById(int id) {
// STUB: we need signature for tests; implementation is not tested
return null;
}
public void setId(int id) {
// STUB: we need signature for tests; implementation is not tested
}
}

26
infer/src/nullsafe/AssignmentRule.ml
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@ -65,7 +65,7 @@ let pp_param_name fmt mangled =
let mk_description_for_bad_param_passed let mk_description_for_bad_param_passed
{model_source; param_signature; actual_param_expression; param_position; function_procname} {model_source; param_signature; actual_param_expression; param_position; function_procname}
~param_nullability nullability_evidence = ~param_nullability ~nullability_evidence =
let nullability_evidence_as_suffix = let nullability_evidence_as_suffix =
Option.value_map nullability_evidence ~f:(fun evidence -> ": " ^ evidence) ~default:"" Option.value_map nullability_evidence ~f:(fun evidence -> ": " ^ evidence) ~default:""
in in
@ -161,11 +161,22 @@ let violation_description {nullsafe_mode; rhs} ~assignment_location assignment_t
Option.value_map nullability_evidence ~f:(fun evidence -> ": " ^ evidence) ~default:"" Option.value_map nullability_evidence ~f:(fun evidence -> ": " ^ evidence) ~default:""
in in
let module MF = MarkupFormatter in let module MF = MarkupFormatter in
let alternative_method_description =
ErrorRenderingUtils.find_alternative_nonnull_method_description rhs_origin
in
let alternative_recommendation =
Option.value_map alternative_method_description
~f:(fun descr ->
Format.asprintf " If you don't expect null, use %a instead." MF.pp_monospaced descr )
~default:""
in
let error_message = let error_message =
match assignment_type with match assignment_type with
| PassingParamToFunction function_info -> | PassingParamToFunction function_info ->
mk_description_for_bad_param_passed function_info nullability_evidence Format.sprintf "%s%s"
~param_nullability:rhs (mk_description_for_bad_param_passed function_info ~nullability_evidence
~param_nullability:rhs)
alternative_recommendation
| AssigningToField field_name -> | AssigningToField field_name ->
let rhs_description = let rhs_description =
Nullability.( Nullability.(
@ -180,9 +191,9 @@ let violation_description {nullsafe_mode; rhs} ~assignment_location assignment_t
nullability %a" nullability %a"
Nullability.pp other) Nullability.pp other)
in in
Format.asprintf "%a is declared non-nullable but is assigned %s%s." MF.pp_monospaced Format.asprintf "%a is declared non-nullable but is assigned %s%s.%s" MF.pp_monospaced
(Fieldname.get_field_name field_name) (Fieldname.get_field_name field_name)
rhs_description nullability_evidence_as_suffix rhs_description nullability_evidence_as_suffix alternative_recommendation
| ReturningFromFunction function_proc_name -> | ReturningFromFunction function_proc_name ->
let return_description = let return_description =
Nullability.( Nullability.(
@ -198,10 +209,11 @@ let violation_description {nullsafe_mode; rhs} ~assignment_location assignment_t
nullability %a" nullability %a"
Nullability.pp other) Nullability.pp other)
in in
Format.asprintf "%a: return type is declared non-nullable but the method returns %s%s." Format.asprintf
"%a: return type is declared non-nullable but the method returns %s%s.%s"
MF.pp_monospaced MF.pp_monospaced
(Procname.to_simplified_string ~withclass:false function_proc_name) (Procname.to_simplified_string ~withclass:false function_proc_name)
return_description nullability_evidence_as_suffix return_description nullability_evidence_as_suffix alternative_recommendation
in in
let issue_type = get_issue_type assignment_type in let issue_type = get_issue_type assignment_type in
(error_message, issue_type, assignment_location) (error_message, issue_type, assignment_location)

17
infer/src/nullsafe/DereferenceRule.ml
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@ -79,21 +79,30 @@ let violation_description {nullsafe_mode; nullability} ~dereference_location der
| ArrayLengthAccess -> | ArrayLengthAccess ->
"accessing its length" "accessing its length"
in in
let suffix = let origin_descr =
get_origin_opt ~nullable_object_descr nullable_object_origin get_origin_opt ~nullable_object_descr nullable_object_origin
|> Option.bind ~f:(fun origin -> TypeOrigin.get_description origin) |> Option.bind ~f:(fun origin -> TypeOrigin.get_description origin)
|> Option.value_map ~f:(fun origin -> ": " ^ origin) ~default:"" |> Option.value_map ~f:(fun origin -> ": " ^ origin) ~default:""
in in
let alternative_method_description =
ErrorRenderingUtils.find_alternative_nonnull_method_description nullable_object_origin
in
let alternative_recommendation =
Option.value_map alternative_method_description
~f:(fun descr ->
Format.asprintf " If this is intentional, use %a instead." MF.pp_monospaced descr )
~default:""
in
let description = let description =
match nullability with match nullability with
| Nullability.Null -> | Nullability.Null ->
Format.sprintf Format.sprintf
"NullPointerException will be thrown at this line! %s is `null` and is dereferenced \ "NullPointerException will be thrown at this line! %s is `null` and is dereferenced \
via %s%s." via %s%s."
what_is_dereferred_str action_descr suffix what_is_dereferred_str action_descr origin_descr
| Nullability.Nullable -> | Nullability.Nullable ->
Format.sprintf "%s is nullable and is not locally checked for null when %s%s." Format.sprintf "%s is nullable and is not locally checked for null when %s%s.%s"
what_is_dereferred_str action_descr suffix what_is_dereferred_str action_descr origin_descr alternative_recommendation
| other -> | other ->
Logging.die InternalError Logging.die InternalError
"violation_description:: invariant violation: unexpected nullability %a" "violation_description:: invariant violation: unexpected nullability %a"

17
infer/src/nullsafe/ErrorRenderingUtils.ml
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@ -215,3 +215,20 @@ let mk_special_nullsafe_issue ~nullsafe_mode ~bad_nullability ~bad_usage_locatio
bad_usage_location.Location.line recommendation bad_usage_location.Location.line recommendation
in in
(description, issue_type, object_loc) (description, issue_type, object_loc)
let find_alternative_nonnull_method_description nullable_origin =
let open IOption.Let_syntax in
match nullable_origin with
| TypeOrigin.MethodCall {pname= Procname.Java java_pname as pname} ->
let* ModelTables.{package_name; class_name; method_name} =
Models.find_nonnullable_alternative pname
in
let+ original_package_name = Procname.Java.get_package java_pname in
if String.equal original_package_name package_name then
(* The same package that is from origin - omit name for simplicity *)
class_name ^ "." ^ method_name ^ "()"
else (* Fully qualified name *)
package_name ^ "." ^ class_name ^ "." ^ method_name ^ "()"
| _ ->
None

5
infer/src/nullsafe/ErrorRenderingUtils.mli
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@ -23,3 +23,8 @@ val mk_special_nullsafe_issue :
strict and local mode. Returns a tuple (error message, issue type, error location). NOTE: strict and local mode. Returns a tuple (error message, issue type, error location). NOTE:
Location of the error will be NOT in the place when the value is used (that is Location of the error will be NOT in the place when the value is used (that is
[bad_usage_location]), but where the value is first obtained from. *) [bad_usage_location]), but where the value is first obtained from. *)
val find_alternative_nonnull_method_description : TypeOrigin.t -> string option
(** If type origin is the result of a nullable method call that have a known nonnullable alternative
(the one that does the check inside), return the string representation of that alternative
suitable for error messaging. *)

769
infer/src/nullsafe/modelTables.ml
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@ -224,373 +224,405 @@ let mapPut_list =
; (cp, "java.util.Map.put(java.lang.Object,java.lang.Object):java.lang.Object") ] ; (cp, "java.util.Map.put(java.lang.Object,java.lang.Object):java.lang.Object") ]
type nonnull_alternative_method = {package_name: string; class_name: string; method_name: string}
(* Nullable methods that have non-nullable signatures.
Format is a triple: (<nullability>, <method>, <alternative>), *)
let nullable_methods_with_nonnull_alternatives_list =
[ ( (n, [o])
, "android.view.View.findViewById(int):android.view.View"
, {package_name= "android.view"; class_name= "View"; method_name= "requireViewById"} )
; ( (n, [o])
, "android.app.Activity.findViewById(int):android.view.View"
, {package_name= "android.app"; class_name= "Activity"; method_name= "requireViewById"} ) ]
let nullable_method_with_nonnull_alternatives_nullability_list =
let result =
List.map nullable_methods_with_nonnull_alternatives_list
~f:(fun (nullability, method_descr, _) -> (nullability, method_descr))
in
List.iter result ~f:(fun ((ret_nullability, _param_nullability), _) ->
if not (ret_nullability == n) then
Logging.die Logging.InternalError "Function is expected to be nullable" ) ;
result
(* Methods with signatures that are not special enough to be described in one of lists above *)
let annotated_list_nullability_other =
[ (o1, "android.text.SpannableString.valueOf(java.lang.CharSequence):android.text.SpannableString")
; (o1, "android.app.AlarmManager.cancel(android.app.PendingIntent):void")
; (o1, "android.net.Uri.parse(java.lang.String):android.net.Uri")
; (n1, "android.os.Parcel.writeList(java.util.List):void")
; (n2, "android.os.Parcel.writeParcelable(android.os.Parcelable,int):void")
; (n1, "android.os.Parcel.writeString(java.lang.String):void")
; ( (o, [o; o; n; n; n])
, "com.android.sdklib.build.ApkBuilder.<init>(java.io.File,java.io.File,java.io.File,java.lang.String,java.io.PrintStream)"
)
; ( (o, [n])
, "com.android.manifmerger.ManifestMerger.xmlFileAndLine(org.w3c.dom.Node):com.android.manifmerger.IMergerLog$FileAndLine"
)
; ( on
, "com.android.util.CommandLineParser$Mode.process(com.android.util.CommandLineParser$Arg,java.lang.String):java.lang.Object"
)
; ( on
, "com.google.common.base.Objects$ToStringHelper.add(java.lang.String,java.lang.Object):com.google.common.base.Objects$ToStringHelper"
)
; (n2, "com.google.common.base.Objects.equal(java.lang.Object,java.lang.Object):boolean")
; ( n1
, "com.google.common.base.Optional.fromNullable(java.lang.Object):com.google.common.base.Optional"
)
; ((n, []), "com.google.common.base.Optional.orNull():java.lang.Object")
; (n1, "com.google.common.base.Strings.nullToEmpty(java.lang.String):java.lang.String")
; (cg, "com.google.common.collect.ImmutableMap.get(java.lang.Object):java.lang.Object")
; (* container get *)
( o1
, "com.google.common.collect.ImmutableList$Builder.add(java.lang.Object):com.google.common.collect.ImmutableList$Builder"
)
; ( o1
, "com.google.common.collect.ImmutableList$Builder.addAll(java.lang.Iterable):com.google.common.collect.ImmutableList$Builder"
)
; ( o1
, "com.google.common.collect.ImmutableList.of(java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o2
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o3
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o4
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o5
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o6
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o7
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o8
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o9
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o10
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o11
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o12
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.lang.Iterable):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.util.Collection):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.util.Iterator):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o2
, "com.google.common.collect.ImmutableList.sortedCopyOf(java.util.Comparator,java.lang.Iterable):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableSet.of(java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o2
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o3
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o4
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o5
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.lang.Iterable):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.util.Collection):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.util.Iterator):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSortedSet$Builder.add(java.lang.Object):com.google.common.collect.ImmutableSortedSet$Builder"
)
; ( o2
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o4
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o6
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o8
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o10
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o1
, "com.google.common.collect.ImmutableMap.copyOf(java.util.Map):com.google.common.collect.ImmutableMap"
)
; ( o1
, "com.google.common.collect.ImmutableMap.copyOf(java.lang.Iterable):com.google.common.collect.ImmutableMap"
)
; ( on
, "com.google.common.collect.Iterables.getFirst(java.lang.Iterable,java.lang.Object):java.lang.Object"
)
; ( o1
, "com.google.common.util.concurrent.SettableFuture.setException(java.lang.Throwable):boolean"
)
; (o1, "java.io.File.<init>(java.lang.String)")
; (n1, "java.io.PrintStream.print(java.lang.String):void")
; ((n, [o]), "java.lang.Class.getResource(java.lang.String):java.net.URL")
; (o1, "java.lang.Class.isAssignableFrom(java.lang.Class):boolean")
; (n1, "java.lang.Integer.equals(java.lang.Object):boolean")
; (o1, "java.lang.Integer.parseInt(java.lang.String):int")
; (o1, "java.lang.Long.parseLong(java.lang.String):long")
; (n1, "java.lang.Object.equals(java.lang.Object):boolean")
; (n2, "java.lang.RuntimeException.<init>(java.lang.String,java.lang.Throwable)")
; (n1, "java.lang.String.equals(java.lang.Object):boolean")
; (n1, "java.lang.StringBuilder.append(java.lang.String):java.lang.StringBuilder")
; ((n, [o]), "java.lang.System.getProperty(java.lang.String):java.lang.String")
; ((n, [o]), "java.lang.System.getenv(java.lang.String):java.lang.String")
; ( on
, "java.net.URLClassLoader.newInstance(java.net.URL[],java.lang.ClassLoader):java.net.URLClassLoader"
)
; (ng, "java.nio.file.Path.getParent():java.nio.file.Path")
; (n1, "java.util.AbstractList.equals(java.lang.Object):boolean")
; (ca, "java.util.ArrayList.add(java.lang.Object):boolean")
; (ca, "java.util.List.add(java.lang.Object):boolean")
; (cg, "java.util.Map.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.Map.remove(java.lang.Object):java.lang.Object")
; (cp, "java.util.Map.put(java.lang.Object,java.lang.Object):java.lang.Object")
; (cg, "java.util.HashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.HashMap.remove(java.lang.Object):java.lang.Object")
; (cp, "java.util.HashMap.put(java.lang.Object,java.lang.Object):java.lang.Object")
; (cg, "java.util.concurrent.ConcurrentHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.concurrent.ConcurrentHashMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.AbstractMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.AbstractMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.concurrent.ConcurrentSkipListMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.concurrent.ConcurrentSkipListMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.EnumMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.EnumMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.Hashtable.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.Hashtable.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.IdentityHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.IdentityHashMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.LinkedHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.LinkedHashMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.TreeMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.TreeMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.WeakHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.WeakHashMap.remove(java.lang.Object):java.lang.Object")
; ( (n, [o])
, "javax.lang.model.element.Element.getAnnotation(java.lang.Class):java.lang.annotation.Annotation"
)
; (ng, "javax.lang.model.element.Element.getEnclosingElement():javax.lang.model.element.Element")
; ( ng
, "javax.lang.model.element.ExecutableElement.getDefaultValue():javax.lang.model.element.AnnotationValue"
)
; ( ng
, "javax.lang.model.element.PackageElement.getEnclosingElement():javax.lang.model.element.Element"
)
; (ng, "javax.lang.model.element.VariableElement.getConstantValue():java.lang.Object")
; (ng, "javax.lang.model.type.WildcardType.getSuperBound():javax.lang.model.type.TypeMirror")
; ( (n, [o])
, "javax.lang.model.util.Elements.getPackageElement(java.lang.CharSequence):javax.lang.model.element.PackageElement"
)
; ( (n, [o])
, "javax.lang.model.util.Elements.getTypeElement(java.lang.CharSequence):javax.lang.model.element.TypeElement"
)
; ( (n, [o])
, "javax.lang.model.util.Elements.getDocComment(javax.lang.model.element.Element):java.lang.String"
)
; ( o1
, "javax.lang.model.util.Elements.getElementValuesWithDefaults(javax.lang.model.element.AnnotationMirror):java.util.Map"
)
; (o1, "javax.lang.model.util.Elements.isDeprecated(javax.lang.model.element.Element):boolean")
; ( o1
, "javax.lang.model.util.Elements.getBinaryName(javax.lang.model.element.TypeElement):javax.lang.model.element.Name"
)
; ( o1
, "javax.lang.model.util.Elements.getPackageOf(javax.lang.model.element.Element):javax.lang.model.element.PackageElement"
)
; ( o1
, "javax.lang.model.util.Elements.getAllMembers(javax.lang.model.element.TypeElement):java.util.List"
)
; ( o1
, "javax.lang.model.util.Elements.getAllAnnotationMirrors(javax.lang.model.element.Element):java.util.List"
)
; ( o2
, "javax.lang.model.util.Elements.hides(javax.lang.model.element.Element, \
javax.lang.model.element.Element):boolean" )
; ( o3
, "javax.lang.model.util.Elements.overrides(javax.lang.model.element.ExecutableElement, \
javax.lang.model.element.ExecutableElement, javax.lang.model.element.TypeElement):boolean" )
; ( o1
, "javax.lang.model.util.Types.asElement(javax.lang.model.type.TypeMirror):javax.lang.model.element.Element"
)
; ( o2
, "javax.lang.model.util.Types.isSameType(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.isSubtype(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.isAssignable(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.contains(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.isSubsignature(javax.lang.model.type.ExecutableType, \
javax.lang.model.type.ExecutableType):boolean" )
; ( o1
, "javax.lang.model.util.Types.directSupertypes(javax.lang.model.type.TypeMirror):java.util.List"
)
; ( o1
, "javax.lang.model.util.Types.erasure(javax.lang.model.type.TypeMirror):javax.lang.model.type.TypeMirror"
)
; ( o1
, "javax.lang.model.util.Types.boxedClass(javax.lang.model.type.PrimitiveType):javax.lang.model.element.TypeElement"
)
; ( o1
, "javax.lang.model.util.Types.unboxedType(javax.lang.model.type.TypeMirror):javax.lang.model.type.PrimitiveType"
)
; ( o1
, "javax.lang.model.util.Types.capture(javax.lang.model.type.TypeMirror):javax.lang.model.type.TypeMirror"
)
; ( o1
, "javax.lang.model.util.Types.getArrayType(javax.lang.model.type.TypeMirror):javax.lang.model.type.ArrayType"
)
; ( o2
, "javax.lang.model.util.Types.getWildcardType(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):javax.lang.model.type.WildcardType" )
; ( o2
, "javax.lang.model.util.Types.getDeclaredType(javax.lang.model.element.TypeElement, \
javax.lang.model.type.TypeMirror[]):javax.lang.model.type.DeclaredType" )
; ( o3
, "javax.lang.model.util.Types.getDeclaredType(javax.lang.model.type.DeclaredType, \
javax.lang.model.element.TypeElement, \
javax.lang.model.type.TypeMirror[]):javax.lang.model.type.DeclaredType" )
; ( o2
, "javax.lang.model.util.Types.asMemberOf(javax.lang.model.type.DeclaredType, \
javax.lang.model.element.Element):javax.lang.model.type.TypeMirror" )
; ( n3
, "javax.tools.JavaCompiler.getStandardFileManager(javax.tools.DiagnosticListener,java.util.Locale,java.nio.charset.Charset):javax.tools.StandardJavaFileManager"
)
; (ng, "javax.tools.JavaFileObject.getAccessLevel():javax.lang.model.element.Modifier")
; (ng, "javax.tools.JavaFileObject.getNestingKind():javax.lang.model.element.NestingKind")
; ( o2
, "com.sun.source.util.SourcePositions.getStartPosition(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):long" )
; ( o2
, "com.sun.source.util.SourcePositions.getEndPosition(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):long" )
; ( (n, [o; o])
, "com.sun.source.util.TreePath.getPath(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):com.sun.source.util.TreePath" )
; ( (n, [o; o])
, "com.sun.source.util.TreePath.getPath(com.sun.source.util.TreePath, \
com.sun.source.tree.Tree):com.sun.source.util.TreePath" )
; ( (n, [o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.Element):com.sun.source.tree.Tree"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.TypeElement):com.sun.source.tree.ClassTree"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.ExecutableElement):com.sun.source.tree.MethodTree"
)
; ( (n, [o; o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror):com.sun.source.tree.Tree" )
; ( (n, [o; o; o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror, \
javax.lang.model.element.AnnotationValue):com.sun.source.tree.Tree" )
; ( o2
, "com.sun.source.util.Trees.getPath(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):com.sun.source.util.TreePath" )
; ( (n, [o])
, "com.sun.source.util.Trees.getPath(javax.lang.model.element.Element):com.sun.source.util.TreePath"
)
; ( (n, [o; o])
, "com.sun.source.util.Trees.getPath(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror):com.sun.source.util.TreePath" )
; ( (n, [o; o; o])
, "com.sun.source.util.Trees.getPath(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror, \
javax.lang.model.element.AnnotationValue):com.sun.source.util.TreePath" )
; ( (n, [o])
, "com.sun.source.util.Trees.getElement(com.sun.source.util.TreePath):javax.lang.model.element.Element"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getTypeMirror(com.sun.source.util.TreePath):javax.lang.model.type.TypeMirror"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getScope(com.sun.source.util.TreePath):com.sun.source.tree.Scope"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getDocComment(com.sun.source.util.TreePath):java.lang.String" )
; ( o2
, "com.sun.source.util.Trees.isAccessible(com.sun.source.tree.Scope, \
javax.lang.model.element.TypeElement):boolean" )
; ( o3
, "com.sun.source.util.Trees.isAccessible(com.sun.source.tree.Scope, \
javax.lang.model.element.Element, javax.lang.model.type.DeclaredType):boolean" )
; ( o1
, "com.sun.source.util.Trees.getOriginalType(javax.lang.model.type.ErrorType):javax.lang.model.type.TypeMirror"
)
; ( (o, [o; o; o; o])
, "com.sun.source.util.Trees.printMessage(javax.tools.Diagnostic.Kind, java.lang.CharSequence, \
com.sun.source.tree.Tree, com.sun.source.tree.CompilationUnitTree):void" )
; ( o1
, "com.sun.source.util.Trees.getLub(com.sun.source.tree.CatchTree):javax.lang.model.type.TypeMirror"
)
; ( (n, [o; n; n])
, "org.w3c.dom.Document.setUserData(java.lang.String,java.lang.Object,org.w3c.dom.UserDataHandler):java.lang.Object"
)
; ( (n, [o; n; n])
, "org.w3c.dom.Node.setUserData(java.lang.String,java.lang.Object,org.w3c.dom.UserDataHandler):java.lang.Object"
)
; (* References *)
(ng, "java.lang.ref.Reference.get():java.lang.Object")
; (ng, "java.lang.ref.PhantomReference.get():java.lang.Object")
; (ng, "java.lang.ref.SoftReference.get():java.lang.Object")
; (ng, "java.lang.ref.WeakReference.get():java.lang.Object")
; (ng, "java.util.concurrent.atomic.AtomicReference.get():java.lang.Object") ]
(** Models for nullability *) (** Models for nullability *)
let annotated_list_nullability = let annotated_list_nullability =
check_not_null_list @ check_state_list @ check_argument_list @ true_on_null_list let result =
@ [ ( o1 check_not_null_list @ check_state_list @ check_argument_list @ true_on_null_list
, "android.text.SpannableString.valueOf(java.lang.CharSequence):android.text.SpannableString" @ nullable_method_with_nonnull_alternatives_nullability_list @ annotated_list_nullability_other
) in
; (o1, "android.app.AlarmManager.cancel(android.app.PendingIntent):void") List.find_a_dup result ~compare:(fun (_, descr1) (_, descr2) -> String.compare descr1 descr2)
; (o1, "android.net.Uri.parse(java.lang.String):android.net.Uri") |> Option.iter ~f:(fun (_, duplicate_method_descr) ->
; (n1, "android.os.Parcel.writeList(java.util.List):void") Logging.die Logging.InternalError "Nullability table contains a duplicate %s"
; (n2, "android.os.Parcel.writeParcelable(android.os.Parcelable,int):void") duplicate_method_descr ) ;
; (n1, "android.os.Parcel.writeString(java.lang.String):void") result
; ( (o, [o; o; n; n; n])
, "com.android.sdklib.build.ApkBuilder.<init>(java.io.File,java.io.File,java.io.File,java.lang.String,java.io.PrintStream)"
)
; ( (o, [n])
, "com.android.manifmerger.ManifestMerger.xmlFileAndLine(org.w3c.dom.Node):com.android.manifmerger.IMergerLog$FileAndLine"
)
; ( on
, "com.android.util.CommandLineParser$Mode.process(com.android.util.CommandLineParser$Arg,java.lang.String):java.lang.Object"
)
; ( on
, "com.google.common.base.Objects$ToStringHelper.add(java.lang.String,java.lang.Object):com.google.common.base.Objects$ToStringHelper"
)
; (n2, "com.google.common.base.Objects.equal(java.lang.Object,java.lang.Object):boolean")
; ( n1
, "com.google.common.base.Optional.fromNullable(java.lang.Object):com.google.common.base.Optional"
)
; ((n, []), "com.google.common.base.Optional.orNull():java.lang.Object")
; (n1, "com.google.common.base.Strings.nullToEmpty(java.lang.String):java.lang.String")
; (cg, "com.google.common.collect.ImmutableMap.get(java.lang.Object):java.lang.Object")
; (* container get *)
( o1
, "com.google.common.collect.ImmutableList$Builder.add(java.lang.Object):com.google.common.collect.ImmutableList$Builder"
)
; ( o1
, "com.google.common.collect.ImmutableList$Builder.addAll(java.lang.Iterable):com.google.common.collect.ImmutableList$Builder"
)
; ( o1
, "com.google.common.collect.ImmutableList.of(java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o2
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o3
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o4
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o5
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o6
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o7
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o8
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o9
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o10
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o11
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o12
, "com.google.common.collect.ImmutableList.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.lang.Iterable):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.util.Collection):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.util.Iterator):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableList.copyOf(java.lang.Object):com.google.common.collect.ImmutableList"
)
; ( o2
, "com.google.common.collect.ImmutableList.sortedCopyOf(java.util.Comparator,java.lang.Iterable):com.google.common.collect.ImmutableList"
)
; ( o1
, "com.google.common.collect.ImmutableSet.of(java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o2
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o3
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o4
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o5
, "com.google.common.collect.ImmutableSet.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.lang.Iterable):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.util.Collection):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.util.Iterator):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSet.copyOf(java.lang.Object):com.google.common.collect.ImmutableSet"
)
; ( o1
, "com.google.common.collect.ImmutableSortedSet$Builder.add(java.lang.Object):com.google.common.collect.ImmutableSortedSet$Builder"
)
; ( o2
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o4
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o6
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o8
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o10
, "com.google.common.collect.ImmutableMap.of(java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object,java.lang.Object):com.google.common.collect.ImmutableMap"
)
; ( o1
, "com.google.common.collect.ImmutableMap.copyOf(java.util.Map):com.google.common.collect.ImmutableMap"
)
; ( o1
, "com.google.common.collect.ImmutableMap.copyOf(java.lang.Iterable):com.google.common.collect.ImmutableMap"
)
; ( on
, "com.google.common.collect.Iterables.getFirst(java.lang.Iterable,java.lang.Object):java.lang.Object"
)
; ( o1
, "com.google.common.util.concurrent.SettableFuture.setException(java.lang.Throwable):boolean"
)
; (o1, "java.io.File.<init>(java.lang.String)")
; (n1, "java.io.PrintStream.print(java.lang.String):void")
; ((n, [o]), "java.lang.Class.getResource(java.lang.String):java.net.URL")
; (o1, "java.lang.Class.isAssignableFrom(java.lang.Class):boolean")
; (n1, "java.lang.Integer.equals(java.lang.Object):boolean")
; (o1, "java.lang.Integer.parseInt(java.lang.String):int")
; (o1, "java.lang.Long.parseLong(java.lang.String):long")
; (n1, "java.lang.Object.equals(java.lang.Object):boolean")
; (n2, "java.lang.RuntimeException.<init>(java.lang.String,java.lang.Throwable)")
; (n1, "java.lang.String.equals(java.lang.Object):boolean")
; (n1, "java.lang.StringBuilder.append(java.lang.String):java.lang.StringBuilder")
; ((n, [o]), "java.lang.System.getProperty(java.lang.String):java.lang.String")
; ((n, [o]), "java.lang.System.getenv(java.lang.String):java.lang.String")
; ( on
, "java.net.URLClassLoader.newInstance(java.net.URL[],java.lang.ClassLoader):java.net.URLClassLoader"
)
; (ng, "java.nio.file.Path.getParent():java.nio.file.Path")
; (n1, "java.util.AbstractList.equals(java.lang.Object):boolean")
; (ca, "java.util.ArrayList.add(java.lang.Object):boolean")
; (ca, "java.util.List.add(java.lang.Object):boolean")
; (cg, "java.util.Map.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.Map.remove(java.lang.Object):java.lang.Object")
; (cp, "java.util.Map.put(java.lang.Object,java.lang.Object):java.lang.Object")
; (cg, "java.util.HashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.HashMap.remove(java.lang.Object):java.lang.Object")
; (cp, "java.util.HashMap.put(java.lang.Object,java.lang.Object):java.lang.Object")
; (cg, "java.util.concurrent.ConcurrentHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.concurrent.ConcurrentHashMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.AbstractMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.AbstractMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.concurrent.ConcurrentSkipListMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.concurrent.ConcurrentSkipListMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.EnumMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.EnumMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.Hashtable.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.Hashtable.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.IdentityHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.IdentityHashMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.LinkedHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.LinkedHashMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.TreeMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.TreeMap.remove(java.lang.Object):java.lang.Object")
; (cg, "java.util.WeakHashMap.get(java.lang.Object):java.lang.Object")
; (cr, "java.util.WeakHashMap.remove(java.lang.Object):java.lang.Object")
; ( (n, [o])
, "javax.lang.model.element.Element.getAnnotation(java.lang.Class):java.lang.annotation.Annotation"
)
; (ng, "javax.lang.model.element.Element.getEnclosingElement():javax.lang.model.element.Element")
; ( ng
, "javax.lang.model.element.ExecutableElement.getDefaultValue():javax.lang.model.element.AnnotationValue"
)
; ( ng
, "javax.lang.model.element.PackageElement.getEnclosingElement():javax.lang.model.element.Element"
)
; (ng, "javax.lang.model.element.VariableElement.getConstantValue():java.lang.Object")
; (ng, "javax.lang.model.type.WildcardType.getSuperBound():javax.lang.model.type.TypeMirror")
; ( (n, [o])
, "javax.lang.model.util.Elements.getPackageElement(java.lang.CharSequence):javax.lang.model.element.PackageElement"
)
; ( (n, [o])
, "javax.lang.model.util.Elements.getTypeElement(java.lang.CharSequence):javax.lang.model.element.TypeElement"
)
; ( (n, [o])
, "javax.lang.model.util.Elements.getDocComment(javax.lang.model.element.Element):java.lang.String"
)
; ( o1
, "javax.lang.model.util.Elements.getElementValuesWithDefaults(javax.lang.model.element.AnnotationMirror):java.util.Map"
)
; (o1, "javax.lang.model.util.Elements.isDeprecated(javax.lang.model.element.Element):boolean")
; ( o1
, "javax.lang.model.util.Elements.getBinaryName(javax.lang.model.element.TypeElement):javax.lang.model.element.Name"
)
; ( o1
, "javax.lang.model.util.Elements.getPackageOf(javax.lang.model.element.Element):javax.lang.model.element.PackageElement"
)
; ( o1
, "javax.lang.model.util.Elements.getAllMembers(javax.lang.model.element.TypeElement):java.util.List"
)
; ( o1
, "javax.lang.model.util.Elements.getAllAnnotationMirrors(javax.lang.model.element.Element):java.util.List"
)
; ( o2
, "javax.lang.model.util.Elements.hides(javax.lang.model.element.Element, \
javax.lang.model.element.Element):boolean" )
; ( o3
, "javax.lang.model.util.Elements.overrides(javax.lang.model.element.ExecutableElement, \
javax.lang.model.element.ExecutableElement, javax.lang.model.element.TypeElement):boolean"
)
; ( o1
, "javax.lang.model.util.Types.asElement(javax.lang.model.type.TypeMirror):javax.lang.model.element.Element"
)
; ( o2
, "javax.lang.model.util.Types.isSameType(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.isSubtype(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.isAssignable(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.contains(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):boolean" )
; ( o2
, "javax.lang.model.util.Types.isSubsignature(javax.lang.model.type.ExecutableType, \
javax.lang.model.type.ExecutableType):boolean" )
; ( o1
, "javax.lang.model.util.Types.directSupertypes(javax.lang.model.type.TypeMirror):java.util.List"
)
; ( o1
, "javax.lang.model.util.Types.erasure(javax.lang.model.type.TypeMirror):javax.lang.model.type.TypeMirror"
)
; ( o1
, "javax.lang.model.util.Types.boxedClass(javax.lang.model.type.PrimitiveType):javax.lang.model.element.TypeElement"
)
; ( o1
, "javax.lang.model.util.Types.unboxedType(javax.lang.model.type.TypeMirror):javax.lang.model.type.PrimitiveType"
)
; ( o1
, "javax.lang.model.util.Types.capture(javax.lang.model.type.TypeMirror):javax.lang.model.type.TypeMirror"
)
; ( o1
, "javax.lang.model.util.Types.getArrayType(javax.lang.model.type.TypeMirror):javax.lang.model.type.ArrayType"
)
; ( o2
, "javax.lang.model.util.Types.getWildcardType(javax.lang.model.type.TypeMirror, \
javax.lang.model.type.TypeMirror):javax.lang.model.type.WildcardType" )
; ( o2
, "javax.lang.model.util.Types.getDeclaredType(javax.lang.model.element.TypeElement, \
javax.lang.model.type.TypeMirror[]):javax.lang.model.type.DeclaredType" )
; ( o3
, "javax.lang.model.util.Types.getDeclaredType(javax.lang.model.type.DeclaredType, \
javax.lang.model.element.TypeElement, \
javax.lang.model.type.TypeMirror[]):javax.lang.model.type.DeclaredType" )
; ( o2
, "javax.lang.model.util.Types.asMemberOf(javax.lang.model.type.DeclaredType, \
javax.lang.model.element.Element):javax.lang.model.type.TypeMirror" )
; ( n3
, "javax.tools.JavaCompiler.getStandardFileManager(javax.tools.DiagnosticListener,java.util.Locale,java.nio.charset.Charset):javax.tools.StandardJavaFileManager"
)
; (ng, "javax.tools.JavaFileObject.getAccessLevel():javax.lang.model.element.Modifier")
; (ng, "javax.tools.JavaFileObject.getNestingKind():javax.lang.model.element.NestingKind")
; ( o2
, "com.sun.source.util.SourcePositions.getStartPosition(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):long" )
; ( o2
, "com.sun.source.util.SourcePositions.getEndPosition(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):long" )
; ( (n, [o; o])
, "com.sun.source.util.TreePath.getPath(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):com.sun.source.util.TreePath" )
; ( (n, [o; o])
, "com.sun.source.util.TreePath.getPath(com.sun.source.util.TreePath, \
com.sun.source.tree.Tree):com.sun.source.util.TreePath" )
; ( (n, [o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.Element):com.sun.source.tree.Tree"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.TypeElement):com.sun.source.tree.ClassTree"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.ExecutableElement):com.sun.source.tree.MethodTree"
)
; ( (n, [o; o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror):com.sun.source.tree.Tree" )
; ( (n, [o; o; o])
, "com.sun.source.util.Trees.getTree(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror, \
javax.lang.model.element.AnnotationValue):com.sun.source.tree.Tree" )
; ( o2
, "com.sun.source.util.Trees.getPath(com.sun.source.tree.CompilationUnitTree, \
com.sun.source.tree.Tree):com.sun.source.util.TreePath" )
; ( (n, [o])
, "com.sun.source.util.Trees.getPath(javax.lang.model.element.Element):com.sun.source.util.TreePath"
)
; ( (n, [o; o])
, "com.sun.source.util.Trees.getPath(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror):com.sun.source.util.TreePath" )
; ( (n, [o; o; o])
, "com.sun.source.util.Trees.getPath(javax.lang.model.element.Element, \
javax.lang.model.element.AnnotationMirror, \
javax.lang.model.element.AnnotationValue):com.sun.source.util.TreePath" )
; ( (n, [o])
, "com.sun.source.util.Trees.getElement(com.sun.source.util.TreePath):javax.lang.model.element.Element"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getTypeMirror(com.sun.source.util.TreePath):javax.lang.model.type.TypeMirror"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getScope(com.sun.source.util.TreePath):com.sun.source.tree.Scope"
)
; ( (n, [o])
, "com.sun.source.util.Trees.getDocComment(com.sun.source.util.TreePath):java.lang.String" )
; ( o2
, "com.sun.source.util.Trees.isAccessible(com.sun.source.tree.Scope, \
javax.lang.model.element.TypeElement):boolean" )
; ( o3
, "com.sun.source.util.Trees.isAccessible(com.sun.source.tree.Scope, \
javax.lang.model.element.Element, javax.lang.model.type.DeclaredType):boolean" )
; ( o1
, "com.sun.source.util.Trees.getOriginalType(javax.lang.model.type.ErrorType):javax.lang.model.type.TypeMirror"
)
; ( (o, [o; o; o; o])
, "com.sun.source.util.Trees.printMessage(javax.tools.Diagnostic.Kind, \
java.lang.CharSequence, com.sun.source.tree.Tree, \
com.sun.source.tree.CompilationUnitTree):void" )
; ( o1
, "com.sun.source.util.Trees.getLub(com.sun.source.tree.CatchTree):javax.lang.model.type.TypeMirror"
)
; ( (n, [o; n; n])
, "org.w3c.dom.Document.setUserData(java.lang.String,java.lang.Object,org.w3c.dom.UserDataHandler):java.lang.Object"
)
; ( (n, [o; n; n])
, "org.w3c.dom.Node.setUserData(java.lang.String,java.lang.Object,org.w3c.dom.UserDataHandler):java.lang.Object"
)
; (* References *)
(ng, "java.lang.ref.Reference.get():java.lang.Object")
; (ng, "java.lang.ref.PhantomReference.get():java.lang.Object")
; (ng, "java.lang.ref.SoftReference.get():java.lang.Object")
; (ng, "java.lang.ref.WeakReference.get():java.lang.Object")
; (ng, "java.util.concurrent.atomic.AtomicReference.get():java.lang.Object") ]
(** Models for methods that do not return *) (** Models for methods that do not return *)
@ -621,3 +653,10 @@ let mapPut_table = mk_table mapPut_list
let noreturn_table = mk_table noreturn_list let noreturn_table = mk_table noreturn_list
let true_on_null_table = mk_table true_on_null_list let true_on_null_table = mk_table true_on_null_list
let nonnull_alternatives_table =
let method_descr_to_alternative =
List.map nullable_methods_with_nonnull_alternatives_list
~f:(fun (_, method_descr, alternative) -> (alternative, method_descr))
in
mk_table method_descr_to_alternative

9
infer/src/nullsafe/modelTables.mli
Unescape View File

@ -34,3 +34,12 @@ val mapPut_table : model_table_t
val noreturn_table : model_table_t val noreturn_table : model_table_t
val true_on_null_table : model_table_t val true_on_null_table : model_table_t
(** Used to describe a method complementary to a given one. Contains information needed for
reporting (hence does not describe the whole signature). *)
type nonnull_alternative_method = {package_name: string; class_name: string; method_name: string}
val nonnull_alternatives_table : (string, nonnull_alternative_method) Caml.Hashtbl.t
(** The key is a string representation of a [@Nullable] method. The value is the description of
non-nullable alternative: a method does the same, but never returns null (does a null check
inside). *)

8
infer/src/nullsafe/models.ml
Unescape View File

@ -144,3 +144,11 @@ let is_containsKey proc_name = table_has_procedure containsKey_table proc_name
(** Check if the procedure is Map.put(). *) (** Check if the procedure is Map.put(). *)
let is_mapPut proc_name = table_has_procedure mapPut_table proc_name let is_mapPut proc_name = table_has_procedure mapPut_table proc_name
(** Check if a (nullable) method has a non-nullable alternative: A method that does the same as
[proc_name] but asserts the result is not null before returning to the caller. *)
let find_nonnullable_alternative proc_name =
(* NOTE: For now we fetch this info from internal models.
It is a good idea to support this feature in a user-facing third party repository. *)
let proc_id = Procname.to_unique_id proc_name in
Hashtbl.find_opt nonnull_alternatives_table proc_id

38
infer/tests/codetoanalyze/java/nullsafe-default/AlternativeRecommendations.java
Unescape View File

@ -0,0 +1,38 @@
/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
package codetoanalyze.java.nullsafe_default;
import android.annotation.SuppressLint;
import android.view.View;
/**
* Test to ensure we have special messaging when misusing known nullable methods that have
* non-nullable alternatives.
*/
public class AlternativeRecommendations {
@SuppressLint("eradicate-field-not-initialized")
View field;
static void dereference_ShouldSuggestAlternative(View view) {
view.findViewById(2).setId(3);
}
static void passingParam_ShouldSuggestAlternative(View view) {
acceptsNonnullView(view.findViewById(2));
}
static View returnValue_ShouldSuggestAlternative(View view) {
return view.findViewById(2);
}
void assigningField_ShouldSuggestAlternative(View view) {
field = view.findViewById(2);
}
static void acceptsNonnullView(View view) {}
}

4
infer/tests/codetoanalyze/java/nullsafe-default/issues.exp
Unescape View File

@ -1,3 +1,7 @@
codetoanalyze/java/nullsafe-default/AlternativeRecommendations.java, codetoanalyze.java.nullsafe_default.AlternativeRecommendations.assigningField_ShouldSuggestAlternative(android.view.View):void, 0, ERADICATE_FIELD_NOT_NULLABLE, no_bucket, WARNING, [`field` is declared non-nullable but is assigned a nullable: call to View.findViewById(...) at line 34 (nullable according to nullsafe internal models). If you don't expect null, use `View.requireViewById()` instead.]
codetoanalyze/java/nullsafe-default/AlternativeRecommendations.java, codetoanalyze.java.nullsafe_default.AlternativeRecommendations.dereference_ShouldSuggestAlternative(android.view.View):void, 0, ERADICATE_NULLABLE_DEREFERENCE, no_bucket, WARNING, [`view.findViewById(...)` is nullable and is not locally checked for null when calling `setId(...)`: call to View.findViewById(...) at line 22 (nullable according to nullsafe internal models). If this is intentional, use `View.requireViewById()` instead.]
codetoanalyze/java/nullsafe-default/AlternativeRecommendations.java, codetoanalyze.java.nullsafe_default.AlternativeRecommendations.passingParam_ShouldSuggestAlternative(android.view.View):void, 0, ERADICATE_PARAMETER_NOT_NULLABLE, no_bucket, WARNING, [`AlternativeRecommendations.acceptsNonnullView(...)`: parameter #1(`view`) is declared non-nullable but the argument `view.findViewById(...)` is nullable: call to View.findViewById(...) at line 26 (nullable according to nullsafe internal models). If you don't expect null, use `View.requireViewById()` instead.]
codetoanalyze/java/nullsafe-default/AlternativeRecommendations.java, codetoanalyze.java.nullsafe_default.AlternativeRecommendations.returnValue_ShouldSuggestAlternative(android.view.View):android.view.View, 0, ERADICATE_RETURN_NOT_NULLABLE, no_bucket, WARNING, [`returnValue_ShouldSuggestAlternative(...)`: return type is declared non-nullable but the method returns a nullable value: call to View.findViewById(...) at line 30 (nullable according to nullsafe internal models). If you don't expect null, use `View.requireViewById()` instead.]
codetoanalyze/java/nullsafe-default/ButterKnife.java, codetoanalyze.java.nullsafe_default.ButterKnife$TestNotInitialized.<init>(codetoanalyze.java.nullsafe_default.ButterKnife), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `notInitializedNormalIsBAD` is declared non-nullable, so it should be initialized in the constructor or in an `@Initializer` method] codetoanalyze/java/nullsafe-default/ButterKnife.java, codetoanalyze.java.nullsafe_default.ButterKnife$TestNotInitialized.<init>(codetoanalyze.java.nullsafe_default.ButterKnife), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `notInitializedNormalIsBAD` is declared non-nullable, so it should be initialized in the constructor or in an `@Initializer` method]
codetoanalyze/java/nullsafe-default/ButterKnife.java, codetoanalyze.java.nullsafe_default.ButterKnife.<init>(), 0, ERADICATE_FIELD_OVER_ANNOTATED, no_bucket, WARNING, [Field `ButterKnife.nullable` is always initialized in the constructor but is declared `@Nullable`] codetoanalyze/java/nullsafe-default/ButterKnife.java, codetoanalyze.java.nullsafe_default.ButterKnife.<init>(), 0, ERADICATE_FIELD_OVER_ANNOTATED, no_bucket, WARNING, [Field `ButterKnife.nullable` is always initialized in the constructor but is declared `@Nullable`]
codetoanalyze/java/nullsafe-default/ButterKnife.java, codetoanalyze.java.nullsafe_default.ButterKnife.assignNullToNormalIsBAD():void, 0, ERADICATE_FIELD_NOT_NULLABLE, no_bucket, WARNING, [`normal` is declared non-nullable but is assigned `null`: null constant at line 76.] codetoanalyze/java/nullsafe-default/ButterKnife.java, codetoanalyze.java.nullsafe_default.ButterKnife.assignNullToNormalIsBAD():void, 0, ERADICATE_FIELD_NOT_NULLABLE, no_bucket, WARNING, [`normal` is declared non-nullable but is assigned `null`: null constant at line 76.]

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