jif.types.label

Class WriterPolicy_c

java.lang.Object

polyglot.types.TypeObject_c

jif.types.label.Policy_c

jif.types.label.WriterPolicy_c

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, IntegPolicy, Policy, WriterPolicy, polyglot.types.TypeObject, polyglot.util.Copy<polyglot.types.TypeObject>

public class WriterPolicy_c
extends Policy_c
implements WriterPolicy

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
WriterPolicy_c(Principal owner, Principal writer, 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	isBottomIntegrity()
boolean	isCanonical()
boolean	isRuntimeRepresentable()
boolean	isSingleton()
boolean	isTop()
boolean	isTopIntegrity()
IntegPolicy	join(IntegPolicy p)
PathMap	labelCheck(JifContext A, LabelChecker lc)
boolean	leq_(IntegPolicy p, LabelEnv env, LabelEnv.SearchState state)
IntegPolicy	meet(IntegPolicy p)
Principal	owner()
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	updateContextForWriter(LabelChecker lc, JifContext A, PathMap Xowner) Utility method for updating the context for checking the writer.
Principal	writer()

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

WriterPolicy_c

public WriterPolicy_c(Principal owner,
                      Principal writer,
                      JifTypeSystem ts,
                      polyglot.util.Position pos)

Method Detail

owner

public Principal owner()

Specified by:

owner in interface WriterPolicy

writer

public Principal writer()

Specified by:

writer in interface WriterPolicy

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_(IntegPolicy p,
                    LabelEnv env,
                    LabelEnv.SearchState state)

Specified by:

leq_ in interface IntegPolicy

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

updateContextForWriter

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

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

isBottomIntegrity

public boolean isBottomIntegrity()

Specified by:

isBottomIntegrity in interface IntegPolicy

isTopIntegrity

public boolean isTopIntegrity()

Specified by:

isTopIntegrity in interface IntegPolicy

isTop

public boolean isTop()

Specified by:

isTop in interface Policy

isBottom

public boolean isBottom()

Specified by:

isBottom in interface Policy

meet

public IntegPolicy meet(IntegPolicy p)

Specified by:

meet in interface IntegPolicy

join

public IntegPolicy join(IntegPolicy p)

Specified by:

join in interface IntegPolicy