Packages

o

org.opalj.bugpicker.core.analyses

GuardedAndUnguardedAccessAnalysis

object GuardedAndUnguardedAccessAnalysis

Identifies accesses to local reference variables that are once done in a guarded context (w.r.t. its nullness property; guarded by an if instruction) and that are also done in an unguarded context.

This is only a very shallow analysis that is subject to false positives; to filter potential false positives we filter all those issues where we can identify a control and data-dependency to a derived value. E.g.,

def printSize(f : File) : Unit = {
 val name = if(f eq null) null else f.getName
 if(name == null) throw new NullPointerException;
 // here... f is not null; because if f is null at the beginning, name would be null to
 // and the method call would have returned abnormally (raised a NullPointerException).
 println(f.size)
}
Linear Supertypes
AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. GuardedAndUnguardedAccessAnalysis
  2. AnyRef
  3. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Type Members

  1. type UnGuardedAccessAnalysisDomain = Domain with ReferenceValues with RecordCFG with RecordAllThrownExceptions

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def apply(theProject: SomeProject, method: Method, result: AIResult { val domain: org.opalj.bugpicker.core.analyses.GuardedAndUnguardedAccessAnalysis.UnGuardedAccessAnalysisDomain }): List[Issue]
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  13. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  15. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  16. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  17. def toString(): String
    Definition Classes
    AnyRef → Any
  18. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  19. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  20. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )

Inherited from AnyRef

Inherited from Any

Ungrouped