Package edu.umd.cs.findbugs.ba.bcp

Class SingleInstruction

java.lang.Object

edu.umd.cs.findbugs.ba.bcp.PatternElement

edu.umd.cs.findbugs.ba.bcp.SingleInstruction

Direct Known Subclasses:

FieldAccess, OneVariableInstruction

public abstract class SingleInstruction
extends PatternElement

An abstract PatternElement subclass for pattern elements which must match exactly one instruction and accept any kind of branch. (Subclasses may override acceptBranch() to implement more selective handling of branches.)

Author:

David Hovemeyer

See Also:

PatternElement

Constructor Summary

Constructors

Constructor	Description
SingleInstruction()

Method Summary

Modifier and Type	Method	Description
boolean	acceptBranch(Edge edge, org.apache.bcel.generic.InstructionHandle source)	Return whether or not it is acceptable to take the given branch.
int	maxOccur()	Return the maximum number of instructions this PatternElement must match in the ByteCodePattern.
int	minOccur()	Return the minimum number of instructions this PatternElement must match in the ByteCodePattern.

Methods inherited from class edu.umd.cs.findbugs.ba.bcp.PatternElement

addOrCheckDefinition, allowTrailingEdges, dominatedBy, getDominatedBy, getLabel, getNext, label, lookup, match, setAllowTrailingEdges, setIndex, setNext, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SingleInstruction

public SingleInstruction()

Method Detail

acceptBranch

public boolean acceptBranch(Edge edge,
                            org.apache.bcel.generic.InstructionHandle source)

Description copied from class: PatternElement

Return whether or not it is acceptable to take the given branch.

Specified by:

acceptBranch in class PatternElement

Parameters:

edge - the Edge representing the branch

source - the source instruction of the branch

Returns:

true if the Edge is acceptable, false if not

minOccur

public int minOccur()

Description copied from class: PatternElement

Return the minimum number of instructions this PatternElement must match in the ByteCodePattern.

Specified by:

minOccur in class PatternElement

maxOccur

public int maxOccur()

Description copied from class: PatternElement

Return the maximum number of instructions this PatternElement must match in the ByteCodePattern.

Specified by:

maxOccur in class PatternElement