org.checkerframework.dataflow.expression

Class BinaryOperation

java.lang.Object

org.checkerframework.dataflow.expression.JavaExpression

org.checkerframework.dataflow.expression.BinaryOperation

public class BinaryOperation
extends JavaExpression

JavaExpression for binary operations.

Field Summary

Fields

Modifier and Type	Field and Description
protected JavaExpression	left The left operand.
protected Tree.Kind	operationKind The binary operation kind.
protected JavaExpression	right The right operand.
protected com.sun.tools.javac.tree.JCTree.Tag	tag The binary operation kind for pretty printing.

Fields inherited from class org.checkerframework.dataflow.expression.JavaExpression

type

Constructor Summary

Constructors

Constructor and Description
BinaryOperation(BinaryOperationNode node, JavaExpression left, JavaExpression right) Create a binary operation.

Method Summary

Modifier and Type	Method and Description
boolean	containsModifiableAliasOf(Store<?> store, JavaExpression 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 JavaExpression> clazz)
boolean	equals(@Nullable Object other)
JavaExpression	getLeft() Returns the left operand of this binary operation.
Tree.Kind	getOperationKind() Returns the operator of this binary operation.
JavaExpression	getRight() Returns the right operand of this binary operation.
int	hashCode()
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(JavaExpression other) Returns true if and only if the two receivers are syntactically identical.
String	toString()

Methods inherited from class org.checkerframework.dataflow.expression.JavaExpression

containsSyntacticEqualJavaExpression, containsUnknown, fromArrayAccess, fromNode, fromNode, fromNodeFieldAccess, fromTree, fromTree, getImplicitReceiver, getParametersOfEnclosingMethod, getPseudoReceiver, getReceiver, getType, toStringDebug

Methods inherited from class java.lang.Object

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

Field Detail

operationKind

protected final Tree.Kind operationKind

The binary operation kind.

tag

protected final com.sun.tools.javac.tree.JCTree.Tag tag

The binary operation kind for pretty printing.

left

protected final JavaExpression left

The left operand.

right

protected final JavaExpression right

The right operand.

Constructor Detail

BinaryOperation

public BinaryOperation(BinaryOperationNode node,
                       JavaExpression left,
                       JavaExpression right)

Create a binary operation.

Parameters:

node - the binary operation node

left - the left operand

right - the right operand

Method Detail

getOperationKind

public Tree.Kind getOperationKind()

Returns the operator of this binary operation.

Returns:

the binary operation kind

getLeft

public JavaExpression getLeft()

Returns the left operand of this binary operation.

Returns:

the left operand

getRight

public JavaExpression getRight()

Returns the right operand of this binary operation.

Returns:

the right operand

containsOfClass

public boolean containsOfClass(Class<? extends JavaExpression> clazz)

Specified by:

containsOfClass in class JavaExpression

isUnassignableByOtherCode

public boolean isUnassignableByOtherCode()

Description copied from class: JavaExpression

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 JavaExpression.isUnassignableByOtherCode(), and binary operations whose left and right operands are both JavaExpression.isUnmodifiableByOtherCode().

Specified by:

isUnassignableByOtherCode in class JavaExpression

See Also:

JavaExpression.isUnmodifiableByOtherCode()

isUnmodifiableByOtherCode

public boolean isUnmodifiableByOtherCode()

Description copied from class: JavaExpression

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 JavaExpression.isUnassignableByOtherCode() and its type is immutable.

Specified by:

isUnmodifiableByOtherCode in class JavaExpression

See Also:

JavaExpression.isUnassignableByOtherCode()

syntacticEquals

public boolean syntacticEquals(JavaExpression other)

Description copied from class: JavaExpression

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

Overrides:

syntacticEquals in class JavaExpression

Parameters:

other - the other object to compare to this one

Returns:

true if and only if the two receivers are syntactically identical

containsModifiableAliasOf

public boolean containsModifiableAliasOf(Store<?> store,
                                         JavaExpression other)

Description copied from class: JavaExpression

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 JavaExpression

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(@Nullable Object other)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object