• package root
    Definition Classes
  • package org
    Definition Classes
  • 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) 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 -
    • a scalable, easily customizable framework for the abstract interpretation of Java bytecode (Abstract Interpretation Framework -
    • 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 (Bytecode Assembler).

    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.


    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
  • 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
  • package fpcf
    Definition Classes
  • package properties
    Definition Classes
  • package cg
    Definition Classes
  • Callees
  • CalleesPropertyMetaInformation
  • Callers
  • CallersImplWithOtherCalls
  • CallersImplementation
  • CallersOnlyWithConcreteCallers
  • CallersPropertyMetaInformation
  • CallersWithUnknownContext
  • CallersWithVMLevelCall
  • CallersWithoutUnknownContext
  • CallersWithoutVMLevelCall
  • ConcreteCallees
  • EmptyConcreteCallers
  • InstantiatedTypes
  • InstantiatedTypesPropertyMetaInformation
  • LoadedClasses
  • LoadedClassesMetaInformation
  • NoCallees
  • NoCalleesDueToNotReachableMethod
  • NoCallers
  • NoInstantiatedTypes
  • NoLoadedClasses
  • OnlyCallersWithUnknownContext
  • OnlyVMCallersAndWithUnknownContext
  • OnlyVMLevelCallers

package cg

  1. Alphabetic
  1. Public
  2. Protected

Type Members

  1. sealed trait Callees extends Property with CalleesPropertyMetaInformation

    Encapsulates all possible callees of a method, as computed by a set of cooperating call graph analyses.

  2. sealed trait CalleesPropertyMetaInformation extends PropertyMetaInformation
  3. sealed trait Callers extends OrderedProperty with CallersPropertyMetaInformation
  4. class CallersImplWithOtherCalls extends CallersImplementation
  5. sealed trait CallersImplementation extends Callers
  6. class CallersOnlyWithConcreteCallers extends CallersImplementation with CallersWithoutVMLevelCall with CallersWithoutUnknownContext
  7. sealed trait CallersPropertyMetaInformation extends PropertyMetaInformation

    For a given, and for each call site (represented by the PC), the set of methods that are possible call targets.

  8. sealed trait CallersWithUnknownContext extends Callers
  9. sealed trait CallersWithVMLevelCall extends Callers
  10. sealed trait CallersWithoutUnknownContext extends Callers
  11. sealed trait CallersWithoutVMLevelCall extends Callers
  12. sealed class ConcreteCallees extends Callees

    Callees class used for final results where the callees are already aggregated.

  13. sealed trait EmptyConcreteCallers extends Callers
  14. case class InstantiatedTypes extends OrderedProperty with InstantiatedTypesPropertyMetaInformation with Product with Serializable
  15. sealed trait InstantiatedTypesPropertyMetaInformation extends PropertyMetaInformation

    Represent the set of types that have allocations reachable from the respective entry points.

  16. sealed class LoadedClasses extends OrderedProperty with LoadedClassesMetaInformation

    Represent the set of types (classes) that were loaded by the VM during execution of the respective (which is the entity for this property).

  17. sealed trait LoadedClassesMetaInformation extends PropertyMetaInformation