Packages

  • package root
    Definition Classes
    root
  • package org
    Definition Classes
    root
  • package opalj

    OPAL is a Scala-based framework for the static analysis, manipulation and creation of Java bytecode.

    OPAL is a Scala-based framework for the static analysis, manipulation and creation of Java bytecode. OPAL is designed with performance, scalability and adaptability in mind.

    Its main components are:

    • a library (Common) which provides generally useful data-structures and algorithms for static analyses.
    • a framework for implementing lattice based static analyses (Static Analysis Infrastructure)
    • a framework for parsing Java bytecode (Bytecode Infrastructure - org.opalj.bi) that can be used to create arbitrary representations.
    • a library to create a one-to-one in-memory representation of Java bytecode (Bytecode Disassembler - org.opalj.da).
    • a library to convert this representation to Java class files (Bytecode Creator - org.opalj.bc).
    • a library to create a representation of Java bytecode that facilitates writing simple static analyses (Bytecode Representation - org.opalj.br).
    • a library to create a stackless, three-address code representation of Java bytecode that facilitates writing complex static analyses (Three Address Code - org.opalj.tac).
    • a scalable, easily customizable framework for the abstract interpretation of Java bytecode (Abstract Interpretation Framework - org.opalj.ai).
    • a library to extract dependencies between code elements (Dependencies Extraction - org.opalj.de) and to facilitate checking architecture definitions (Architecture Validation - org.opalj.av).
    • a library for the lightweight manipulation and creation of Java bytecode (Bytecode Assembler - org.opalj.ba).
    • a library for parsing Android packages (APK - org.opalj.apk).
    • libraries for writing static analyses using the interprocedural finite distributive subset (IFDS - org.opalj.ifds) and interprocedural distributive environment (IDE - org.opal.ide) algorithms.

    General Design Decisions

    Thread Safety

    Unless explicitly noted, OPAL is thread safe. I.e., the classes defined by OPAL can be considered to be thread safe unless otherwise stated. (For example, it is possible to read and process class files concurrently without explicit synchronization on the client side.)

    No null Values

    Unless explicitly noted, OPAL does not null values I.e., fields that are accessible will never contain null values and methods will never return null. If a method accepts null as a value for a parameter or returns a null value it is always explicitly documented. In general, the behavior of methods that are passed null values is undefined unless explicitly documented.

    No Typecasts for Collections

    For efficiency reasons, OPAL sometimes uses mutable data-structures internally. After construction time, these data-structures are generally represented using their generic interfaces (e.g., scala.collection.{Set,Map}). However, a downcast (e.g., to add/remove elements) is always forbidden as it would effectively prevent thread-safety.

    Assertions

    OPAL makes heavy use of Scala's Assertion Facility to facilitate writing correct code. Hence, for production builds (after thorough testing(!)) it is highly recommend to build OPAL again using -Xdisable-assertions.

    Definition Classes
    org
  • package tac

    Common definitions related to the definition and processing of three address code.

    Common definitions related to the definition and processing of three address code.

    Definition Classes
    opalj
  • package fpcf
    Definition Classes
    tac
  • package analyses
    Definition Classes
    fpcf
  • package alias
    Definition Classes
    analyses
  • package pointsto
    Definition Classes
    alias
  • AbstractAliasAnalysis
  • AliasAnalysisContext
  • AliasAnalysisState
  • AliasSetLike
  • AllocationSiteAndTacBasedAliasAnalysis
  • AllocationSiteBasedAliasAnalysis
  • AllocationSiteBasedAliasAnalysisState
  • AllocationSiteBasedAliasSet
  • IntraProceduralAliasAnalysis
  • IntraProceduralAliasAnalysisScheduler
  • LazyIntraProceduralAliasAnalysisScheduler
  • SetBasedAliasAnalysis
  • SetBasedAliasAnalysisState
  • TacBasedAliasAnalysis
  • TacBasedAliasAnalysisState
  • TypeBasedAliasAnalysis
  • TypeBasedAliasAnalysisState
  • TypeBasedAliasSet

trait AliasSetLike[ElementType, T <: AliasSetLike[ElementType, T]] extends AnyRef

A base trait for alias sets that store the elements that an org.opalj.br.fpcf.properties.alias.AliasSourceElement can point to. It is possible to denote that the set can point to any arbitrary element if an analysis cannot limit the points-to set. This is handled by the pointsToAny and setPointsToAny() method.

ElementType

The type of the elements that can be stored in the set.

T

The concrete type of the alias set.

Source
AliasSetLike.scala
Linear Supertypes
AnyRef, Any
Known Subclasses
AllocationSiteBasedAliasSet, TypeBasedAliasSet
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  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def addPointsTo(pointsTo: ElementType): Unit

    Add the given element to the set of elements the associated org.opalj.br.fpcf.properties.alias.AliasSourceElement can point to.

    Add the given element to the set of elements the associated org.opalj.br.fpcf.properties.alias.AliasSourceElement can point to.

    pointsTo

    The element to add to the set.

  5. def allPointsTo: Set[ElementType]

    Returns all elements this set can point to.

    Returns all elements this set can point to. Note that the returned set being empty does not imply that the isEmpty method returns true, as this set can still point to any arbitrary element.

    returns

    The set of elements the set can point to.

  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @IntrinsicCandidate()
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  10. def findTwoIntersections(other: T): (Option[ElementType], Option[ElementType])

    Tries to find and return two elements that are in both this set and the given other set as a tuple of options.

    Tries to find and return two elements that are in both this set and the given other set as a tuple of options. If only one element is in both sets, the second element is None. If the sets are disjoint, both elements are None.

    This is used instead of computing the whole intersection because more than two elements in the intersection would not change the result of the alias analysis.

    Note that this does not check if one of the sets can point to any arbitrary element.

    other

    The other set to check for intersections.

    returns

    A tuple containing two elements that are in both this set and the other set.

  11. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
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    Annotations
    @native() @IntrinsicCandidate()
  12. def hashCode(): Int
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    Annotations
    @native() @IntrinsicCandidate()
  13. def isEmpty: Boolean

    Checks if the set is empty, i.e., it does not contain any elements it can point to and also cannot point to any arbitrary element.

    Checks if the set is empty, i.e., it does not contain any elements it can point to and also cannot point to any arbitrary element.

    returns

    true if the set is empty, false otherwise.

  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
    Definition Classes
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    @native() @IntrinsicCandidate()
  17. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @IntrinsicCandidate()
  18. def pointsTo(element: ElementType): Boolean

    Checks if the set contains the given element.

    Checks if the set contains the given element.

    element

    The element to check for.

    returns

    true if the set contains the element, false otherwise.

  19. def pointsToAny: Boolean

    Checks if this set can point to any arbitrary element.

    Checks if this set can point to any arbitrary element.

    returns

    true if the set can point to any arbitrary element, false otherwise.

  20. def setPointsToAny(): Unit

    Marks that this set can point to any arbitrary element.

  21. def size: Int

    Returns the number of elements the set can point to.

    Returns the number of elements the set can point to. Note that the size being 0 does not imply that the isEmpty method returns true, as the set can still point to any arbitrary element.

    returns

    The number of elements the set can point to.

  22. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  23. def toString(): String
    Definition Classes
    AnyRef → Any
  24. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.InterruptedException])
  25. final def wait(arg0: Long): Unit
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    @throws(classOf[java.lang.InterruptedException])
  26. final def wait(): Unit
    Definition Classes
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    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
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    @throws(classOf[java.lang.Throwable]) @Deprecated @Deprecated
    Deprecated

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