wytp.proof

Interface Proof.Delta

All Known Implementing Classes:

FastDelta

Enclosing interface:

Proof

public static interface Proof.Delta

A proof delta represents a set of truths which have been introduced during one or more proof steps.

Author:

David J. Pearce

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Proof.Delta.Set A set of truths in a delta, either representing those added or those removed.

Method Summary

Modifier and Type	Method and Description
Proof.Delta	add(Formula truth) Add a new formula to this delta
Proof.Delta	apply(Proof.Delta delta) Apply a given delta on top of this one.
Proof.Delta.Set	getAdditions() Get the set of truths added to this delta
Proof.Delta.Set	getRemovals() Get the set of truths removed from this delta
boolean	isAddition(Formula truth) Check whether or not a given formula is in the additions set
boolean	isRemoval(Formula truth) Check whether or not a given formula is in the removals set
Proof.Delta	remove(Formula truth) Remove a truth from this delta (e.g.

Method Detail

isAddition

boolean isAddition(Formula truth)

Check whether or not a given formula is in the additions set

Parameters:

truth -

Returns:

isRemoval

boolean isRemoval(Formula truth)

Check whether or not a given formula is in the removals set

Parameters:

truth -

Returns:

getAdditions

Proof.Delta.Set getAdditions()

Get the set of truths added to this delta

Returns:

getRemovals

Proof.Delta.Set getRemovals()

Get the set of truths removed from this delta

Returns:

add

Proof.Delta add(Formula truth)

Add a new formula to this delta

Parameters:

truth -

Returns:

remove

Proof.Delta remove(Formula truth)

Remove a truth from this delta (e.g. because it has been processed).

Parameters:

truth -

Returns:

apply

Proof.Delta apply(Proof.Delta delta)

Apply a given delta on top of this one.

Parameters:

delta -

Returns: