dk.brics.string.stringoperations
Class SetLength

java.lang.Object
  dk.brics.string.stringoperations.Operation
      dk.brics.string.stringoperations.UnaryOperation
          dk.brics.string.stringoperations.SetLength

public class SetLength
extends UnaryOperation

Automaton operation for StringBuffer.setLength(int).

Constructor Summary

SetLength()
Constructs new operation object.

Method Summary

CharSet	charsetTransfer(CharSet a) Transfer function for character set analysis.
boolean	equals(Object obj)
int	getPriority() Returns priority of this operation.
int	hashCode()
Automaton	op(Automaton a) Automaton operation.
String	toString() Returns name of this operation.

Methods inherited from class dk.brics.string.stringoperations.UnaryOperation

isAssertion

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SetLength

public SetLength()

Constructs new operation object.

Method Detail

charsetTransfer

public CharSet charsetTransfer(CharSet a)

Description copied from class: UnaryOperation

Transfer function for character set analysis.

Specified by:

charsetTransfer in class UnaryOperation

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

getPriority

public int getPriority()

Description copied from class: Operation

Returns priority of this operation. When approximating operation loops in grammars, operations with high priority are considered first.

Specified by:

getPriority in class Operation

hashCode

public int hashCode()

Overrides:

hashCode in class Object

op

public Automaton op(Automaton a)

Automaton operation. Constructs new automaton as copy of a where a fresh state is the only accept state, it has a 0-transition to itself, all original accept states has an epsilon edge to it, and every state reachable from the initial state becomes an accept state.

Specified by:

op in class UnaryOperation

Parameters:

a - input automaton

Returns:

resulting automaton

toString

public String toString()

Description copied from class: Operation

Returns name of this operation.

Specified by:

toString in class Operation