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 parsing Java bytecode (Bytecode Infrastructure) that can be used to create arbitrary representations.
    • a library to create a one-to-one in-memory representation of Java bytecode (Bytecode Disassembler).
    • a library to create a representation of Java bytecode that facilitates writing simple static analyses (Bytecode Representation - org.opalj.br).
    • 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 and to facilitate checking architecture definitions.
    • a library for the lightweight manipulation and creation of Java bytecode.

    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. Furthermore, the concrete data-structure is always considered an implementation detail and may change at any time.

    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 ai

    Implementation of an abstract interpretation (ai) framework – also referred to as OPAL.

    Implementation of an abstract interpretation (ai) framework – also referred to as OPAL.

    Please note, that OPAL/the abstract interpreter just refers to the classes and traits defined in this package (ai). The classes and traits defined in the sub-packages (in particular in domain) are not considered to be part of the core of OPAL/the abstract interpreter.

    Definition Classes
    opalj
    Note

    This framework assumes that the analyzed bytecode is valid; i.e., the JVM's bytecode verifier would be able to verify the code. Furthermore, load-time errors (e.g., LinkageErrors) are – by default – completely ignored to facilitate the analysis of parts of a project. In general, if the presented bytecode is not valid, the result is undefined (i.e., OPAL may report meaningless results, crash or run indefinitely).

    See also

    org.opalj.ai.Domain - The core interface between the abstract interpretation framework and the abstract domain that is responsible for performing the abstract computations.

    org.opalj.ai.AI - Implements the abstract interpreter that processes a methods code and uses an analysis-specific domain to perform the abstract computations.

  • package domain

    This package contains definitions of common domains that can be used for the implementation of analyses.

    This package contains definitions of common domains that can be used for the implementation of analyses.

    Types of Domains

    In general, we distinguish two types of domains. First, domains that define a general interface (on top of the one defined by Domain), but do not directly provide an implementation. Hence, whenever you develop a new Domain you should consider implementing/using these domains to maximize reusability. Second, Domains that implement a specific interface (trait). In this case, we further distinguish between domains that provide a default implementation (per interface only one of these Domains can be used to create a final Domain) and those that can be stacked and basically refine the overall functionality.

    Examples

    • Domains That Define a General Interface
      • Origin defines two types which domains that provide information abou the origin of a value should consider to implement.
      • TheProject defines a standard mechanism how a domain can access the current project.
      • TheClassHierarchy defines a standard mechanism how to get the project's class hierarchy.
      • ...
    • Domains That Provide a Default Implementation
      • Origin defines the functionality to return a value's origin if the value supports that.
      • TheProject default implementation of the TheClassHierarchy trait that uses the project's class hierarchy.
      • DefaultHandlingOfMethodResults basically implements a Domain's methods related to return instructions an uncaught exceptions.
      • ...
    • Domains That Implement Stackable Functionality
      • RecordThrownExceptions records information about all uncaught exceptions by intercepting a Domain's respective methods. However, it does provide a default implementation. Hence, a typical pattern is:
    class MyDomain extends Domain with ...
        with DefaultHandlingOfMethodResults with RecordThrownExceptions

    Thread Safety

    Unless explicitly documented, a domain is never thread-safe. The general programming model is to use one Domain object per code block/method and therefore, thread-safety is not required for Domains that are used for the evaluation of methods. However domains that are used to adapt/transfer values should be thread safe (see ValuesCoordinatingDomain for further details).

    Definition Classes
    ai
  • package l1

    Commonly useful methods.

    Commonly useful methods.

    Definition Classes
    domain
  • ArrayValues
  • ClassValues
  • ConcretePrimitiveValuesConversions
  • ConstraintsBetweenIntegerValues
  • DefaultArrayValuesBinding
  • DefaultClassValuesBinding
  • DefaultDomain
  • DefaultDomainWithCFG
  • DefaultDomainWithCFGAndDefUse
  • DefaultIntegerRangeValues
  • DefaultIntegerSetValues
  • DefaultIntegerValues
  • DefaultIntervalValuesDomain
  • DefaultJavaObjectToDomainValueConversion
  • DefaultLongSetValues
  • DefaultLongValues
  • DefaultReferenceValuesBinding
  • DefaultReferenceValuesDomain
  • DefaultSetValuesDomain
  • DefaultSingletonValuesDomain
  • DefaultStringValuesBinding
  • IfNullParameterAnalysis
  • IntegerRangeValues
  • IntegerSetValues
  • IntegerValues
  • LongSetValues
  • LongSetValuesShiftOperators
  • LongValues
  • LongValuesShiftOperators
  • MaxArrayLengthRefinement
  • MethodReturnValuesAnalysis
  • NullPropertyRefinement
  • OwnershipAnalysis
  • RecordAllThrownExceptions
  • ReferenceValues
  • RefinedReturnType
  • ReflectiveInvoker
  • SimpleDefUseAnalysis
  • StringBuilderValues
  • StringValues
t

org.opalj.ai.domain.l1

ConcretePrimitiveValuesConversions

trait ConcretePrimitiveValuesConversions extends TypeLevelPrimitiveValuesConversions

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  1. final def !=(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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    @native() @throws( ... )
  6. def d2f(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  7. def d2i(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  8. def d2l(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  9. final def eq(arg0: AnyRef): Boolean
    Definition Classes
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  10. def equals(arg0: Any): Boolean
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  11. def f2d(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  12. def f2i(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  13. def f2l(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  14. def finalize(): Unit
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    @throws( classOf[java.lang.Throwable] )
  15. final def getClass(): Class[_]
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  16. def hashCode(): Int
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  17. def i2d(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  18. def i2f(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  19. def i2l(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue
  20. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  21. def l2d(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue

    Conversion of the given long value to a double value.

    Conversion of the given long value to a double value.

    returns

    The result of calling DoubleValue(pc).

    Definition Classes
    ConcretePrimitiveValuesConversionsTypeLevelPrimitiveValuesConversionsPrimitiveValuesConversionsDomain
  22. def l2f(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue

    Conversion of the given long value to a float value.

    Conversion of the given long value to a float value.

    returns

    The result of calling FloatValue(pc).

    Definition Classes
    ConcretePrimitiveValuesConversionsTypeLevelPrimitiveValuesConversionsPrimitiveValuesConversionsDomain
  23. def l2i(pc: PC, value: (ConcretePrimitiveValuesConversions.this)#DomainValue): (ConcretePrimitiveValuesConversions.this)#DomainValue

    Conversion of the given long value to an integer value.

    Conversion of the given long value to an integer value.

    returns

    The result of calling IntegerValue(pc).

    Definition Classes
    ConcretePrimitiveValuesConversionsTypeLevelPrimitiveValuesConversionsPrimitiveValuesConversionsDomain
  24. final def ne(arg0: AnyRef): Boolean
    Definition Classes
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  25. final def notify(): Unit
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    @native()
  26. final def notifyAll(): Unit
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  27. final def synchronized[T0](arg0: ⇒ T0): T0
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  28. def toString(): String
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  29. final def wait(): Unit
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  30. final def wait(arg0: Long, arg1: Int): Unit
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  31. final def wait(arg0: Long): Unit
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