jif.types.label

Class ReaderPolicy_c

java.lang.Object

polyglot.types.TypeObject_c

jif.types.label.Policy_c

jif.types.label.ReaderPolicy_c

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, ConfPolicy, Policy, ReaderPolicy, polyglot.types.TypeObject, polyglot.util.Copy<polyglot.types.TypeObject>

public class ReaderPolicy_c
extends Policy_c
implements ReaderPolicy

An implementation of the PolicyLabel interface.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface polyglot.util.Copy

polyglot.util.Copy.Util

Field Summary

Fields inherited from class polyglot.types.TypeObject_c

position, ts

Constructor Summary

Constructors

Constructor and Description
ReaderPolicy_c(Principal owner, Principal reader, JifTypeSystem ts, polyglot.util.Position pos)

Method Summary

Modifier and Type	Method and Description
boolean	equalsImpl(polyglot.types.TypeObject o)
int	hashCode()
boolean	isBottom()
boolean	isBottomConfidentiality()
boolean	isCanonical()
boolean	isRuntimeRepresentable()
boolean	isSingleton()
boolean	isTop()
boolean	isTopConfidentiality()
ConfPolicy	join(ConfPolicy p)
PathMap	labelCheck(JifContext A, LabelChecker lc)
boolean	leq_(ConfPolicy p, LabelEnv env, LabelEnv.SearchState state)
ConfPolicy	meet(ConfPolicy p)
Principal	owner()
Principal	reader()
protected Policy	simplifyImpl()
Policy	subst(LabelSubstitution substitution)
java.util.List<polyglot.types.Type>	throwTypes(polyglot.types.TypeSystem ts)
java.lang.String	toString(java.util.Set<Label> printedLabels)
protected void	updateContextForReader(LabelChecker lc, JifContext A, PathMap Xowner) Utility method for updating the context for checking the reader.

Methods inherited from class jif.types.label.Policy_c

copy, hasVariables, hasWritersToReaders, simplify, toString

Methods inherited from class polyglot.types.TypeObject_c

equals, position, typeSystem

Methods inherited from class java.lang.Object

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

Methods inherited from interface jif.types.label.Policy

hasVariables, hasWritersToReaders, simplify

Methods inherited from interface polyglot.types.TypeObject

position, typeSystem

Methods inherited from interface polyglot.util.Copy

copy

Constructor Detail

ReaderPolicy_c

public ReaderPolicy_c(Principal owner,
                      Principal reader,
                      JifTypeSystem ts,
                      polyglot.util.Position pos)

Method Detail

owner

public Principal owner()

Specified by:

owner in interface ReaderPolicy

reader

public Principal reader()

Specified by:

reader in interface ReaderPolicy

isSingleton

public boolean isSingleton()

Specified by:

isSingleton in interface Policy

isCanonical

public boolean isCanonical()

Specified by:

isCanonical in interface Policy

Specified by:

isCanonical in interface polyglot.types.TypeObject

isRuntimeRepresentable

public boolean isRuntimeRepresentable()

Specified by:

isRuntimeRepresentable in interface Policy

simplifyImpl

protected Policy simplifyImpl()

Specified by:

simplifyImpl in class Policy_c

equalsImpl

public boolean equalsImpl(polyglot.types.TypeObject o)

Specified by:

equalsImpl in interface polyglot.types.TypeObject

Specified by:

equalsImpl in class Policy_c

hashCode

public int hashCode()

Overrides:

hashCode in class polyglot.types.TypeObject_c

leq_

public boolean leq_(ConfPolicy p,
                    LabelEnv env,
                    LabelEnv.SearchState state)

Specified by:

leq_ in interface ConfPolicy

toString

public java.lang.String toString(java.util.Set<Label> printedLabels)

Specified by:

toString in interface Policy

Specified by:

toString in class Policy_c

Parameters:

printedLabels - the set of labels for which auxiliary information should be omitted.

throwTypes

public java.util.List<polyglot.types.Type> throwTypes(polyglot.types.TypeSystem ts)

Specified by:

throwTypes in interface Policy

subst

public Policy subst(LabelSubstitution substitution)
             throws polyglot.types.SemanticException

Specified by:

subst in interface Policy

Throws:

polyglot.types.SemanticException

labelCheck

public PathMap labelCheck(JifContext A,
                          LabelChecker lc)

Specified by:

labelCheck in interface Policy

updateContextForReader

protected void updateContextForReader(LabelChecker lc,
                                      JifContext A,
                                      PathMap Xowner)

Utility method for updating the context for checking the reader. Useful for overriding in projects like Fabric.

isBottomConfidentiality

public boolean isBottomConfidentiality()

Specified by:

isBottomConfidentiality in interface ConfPolicy

isTopConfidentiality

public boolean isTopConfidentiality()

Specified by:

isTopConfidentiality in interface ConfPolicy

isTop

public boolean isTop()

Specified by:

isTop in interface Policy

isBottom

public boolean isBottom()

Specified by:

isBottom in interface Policy

meet

public ConfPolicy meet(ConfPolicy p)

Specified by:

meet in interface ConfPolicy

join

public ConfPolicy join(ConfPolicy p)

Specified by:

join in interface ConfPolicy