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Definition Classes: root

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 - 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 (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.

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.

Definition Classes: opalj

package cg

Definition Classes: tac

package common

Definition Classes: tac

package fpcf

Definition Classes: tac

EagerDetachedTACAIKey

InvokedynamicFunctionCall

InvokedynamicMethodCall

JSR

New

NonVirtualFunctionCall

NonVirtualFunctionCallStatement

Nop

PrimitiveTypecastExpr

Ret

StaticFunctionCallStatement

TAC

TACOptimizationResult

Var

VirtualFunctionCallStatement

VirtualMethodCall

org.opalj.tac

DefSites

object DefSites

Extractor to get the definition site of an expression's/statement's value.

This extractor may fail (i.e., throw an exception), when the expr is not a DVar or a Const; this decision was made to capture programming failures as early as possible (flat).

Source: DUVar.scala

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def toString(defSites: IntTrieSet): Iterator[String]
def toString(): String
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def unapply(valueExpr: Expr[DUVar[_]]): Some[IntTrieSet]
Defines an extractor to get the definition site of an expression's/statement's value.
Defines an extractor to get the definition site of an expression's/statement's value. Returns the empty set if the value is a constant.
final def wait(arg0: Long, arg1: Int): Unit
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final def wait(arg0: Long): Unit
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def finalize(): Unit
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General Design Decisions

Thread Safety

No `null` Values

No Typecasts for Collections

Assertions

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object DefSites

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General Design Decisions

Thread Safety

No null Values

No Typecasts for Collections

Assertions

DefSites

object DefSites

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No `null` Values

DefSites