org.checkerframework.dataflow.analysis

Class FlowExpressions.FieldAccess

java.lang.Object

org.checkerframework.dataflow.analysis.FlowExpressions.Receiver

org.checkerframework.dataflow.analysis.FlowExpressions.FieldAccess

Enclosing class:

FlowExpressions

public static class FlowExpressions.FieldAccess
extends FlowExpressions.Receiver

Field Summary

Fields

Modifier and Type	Field and Description
protected VariableElement	field
protected FlowExpressions.Receiver	receiver

Fields inherited from class org.checkerframework.dataflow.analysis.FlowExpressions.Receiver

type

Constructor Summary

Constructors

Constructor and Description
FieldAccess(FlowExpressions.Receiver receiver, FieldAccessNode node)
FieldAccess(FlowExpressions.Receiver receiver, TypeMirror type, VariableElement fieldElement)

Method Summary

Modifier and Type	Method and Description
boolean	containsModifiableAliasOf(Store<?> store, FlowExpressions.Receiver other) Returns true if and only if other appears anywhere in this receiver or an expression appears in this receiver such that other might alias this expression, and that expression is modifiable.
boolean	containsOfClass(Class<? extends FlowExpressions.Receiver> clazz)
boolean	containsSyntacticEqualReceiver(FlowExpressions.Receiver other) Returns true if and only if this receiver contains a receiver that is syntactically equal to other.
boolean	equals(@Nullable Object obj)
VariableElement	getField()
FlowExpressions.Receiver	getReceiver()
int	hashCode()
boolean	isFinal()
boolean	isStatic()
boolean	isUnassignableByOtherCode() Returns true if and only if the value this expression stands for cannot be changed (with respect to ==) by a method call.
boolean	isUnmodifiableByOtherCode() Returns true if and only if the value this expression stands for cannot be changed by a method call, including changes to any of its fields.
boolean	syntacticEquals(FlowExpressions.Receiver other) Returns true if and only if the two receivers are syntactically identical.
String	toString()

Methods inherited from class org.checkerframework.dataflow.analysis.FlowExpressions.Receiver

containsUnknown, getType, toStringDebug

Methods inherited from class java.lang.Object

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

Field Detail

receiver

protected final FlowExpressions.Receiver receiver

field

protected final VariableElement field

Constructor Detail

FieldAccess

public FieldAccess(FlowExpressions.Receiver receiver,
                   FieldAccessNode node)

FieldAccess

public FieldAccess(FlowExpressions.Receiver receiver,
                   TypeMirror type,
                   VariableElement fieldElement)

Method Detail

getReceiver

public FlowExpressions.Receiver getReceiver()

getField

public VariableElement getField()

isFinal

public boolean isFinal()

isStatic

public boolean isStatic()

equals

public boolean equals(@Nullable Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

containsModifiableAliasOf

public boolean containsModifiableAliasOf(Store<?> store,
                                         FlowExpressions.Receiver other)

Description copied from class: FlowExpressions.Receiver

Returns true if and only if other appears anywhere in this receiver or an expression appears in this receiver such that other might alias this expression, and that expression is modifiable.

This is always true, except for cases where the Java type information prevents aliasing and none of the subexpressions can alias 'other'.

Overrides:

containsModifiableAliasOf in class FlowExpressions.Receiver

containsSyntacticEqualReceiver

public boolean containsSyntacticEqualReceiver(FlowExpressions.Receiver other)

Description copied from class: FlowExpressions.Receiver

Returns true if and only if this receiver contains a receiver that is syntactically equal to other.

Overrides:

containsSyntacticEqualReceiver in class FlowExpressions.Receiver

Returns:

true if and only if this receiver contains a receiver that is syntactically equal to other

syntacticEquals

public boolean syntacticEquals(FlowExpressions.Receiver other)

Description copied from class: FlowExpressions.Receiver

Returns true if and only if the two receivers are syntactically identical.

Overrides:

syntacticEquals in class FlowExpressions.Receiver

Parameters:

other - the other object to compare to this one

Returns:

true if and only if the two receivers are syntactically identical

toString

public String toString()

Overrides:

toString in class Object

containsOfClass

public boolean containsOfClass(Class<? extends FlowExpressions.Receiver> clazz)

Specified by:

containsOfClass in class FlowExpressions.Receiver

isUnassignableByOtherCode

public boolean isUnassignableByOtherCode()

Description copied from class: FlowExpressions.Receiver

Returns true if and only if the value this expression stands for cannot be changed (with respect to ==) by a method call. This is the case for local variables, the self reference, final field accesses whose receiver is FlowExpressions.Receiver.isUnassignableByOtherCode(), and binary operations whose left and right operands are both FlowExpressions.Receiver.isUnmodifiableByOtherCode().

Specified by:

isUnassignableByOtherCode in class FlowExpressions.Receiver

See Also:

FlowExpressions.Receiver.isUnmodifiableByOtherCode()

isUnmodifiableByOtherCode

public boolean isUnmodifiableByOtherCode()

Description copied from class: FlowExpressions.Receiver

Returns true if and only if the value this expression stands for cannot be changed by a method call, including changes to any of its fields.

Approximately, this returns true if the expression is FlowExpressions.Receiver.isUnassignableByOtherCode() and its type is immutable.

Specified by:

isUnmodifiableByOtherCode in class FlowExpressions.Receiver

See Also:

FlowExpressions.Receiver.isUnassignableByOtherCode()