com.google.gwt.dev.js.ast

Class JsPrefixOperation

java.lang.Object

com.google.gwt.dev.js.ast.JsNode

com.google.gwt.dev.js.ast.JsExpression

com.google.gwt.dev.js.ast.JsUnaryOperation

com.google.gwt.dev.js.ast.JsPrefixOperation

All Implemented Interfaces:

HasSourceInfo, CanBooleanEval, JsVisitable, Serializable

public final class JsPrefixOperation
extends JsUnaryOperation
implements CanBooleanEval

A JavaScript prefix operation.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
JsPrefixOperation(SourceInfo sourceInfo, JsUnaryOperator op)
JsPrefixOperation(SourceInfo sourceInfo, JsUnaryOperator op, JsExpression arg)

Method Summary

Modifier and Type	Method and Description
NodeKind	getKind()
boolean	isBooleanFalse()
boolean	isBooleanTrue()
boolean	isDefinitelyNotNull() True if the target expression is definitely not null.
boolean	isDefinitelyNull() True if the target expression is definitely null.
void	traverse(JsVisitor v, JsContext ctx) Causes this object to have the visitor visit itself and its children.

Methods inherited from class com.google.gwt.dev.js.ast.JsUnaryOperation

getArg, getOperator, hasSideEffects, setArg

Methods inherited from class com.google.gwt.dev.js.ast.JsExpression

isLeaf, makeStmt

Methods inherited from class com.google.gwt.dev.js.ast.JsNode

getSourceInfo, setSourceInfo, toSource, toSource, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode

Constructor Detail

JsPrefixOperation

public JsPrefixOperation(SourceInfo sourceInfo,
                         JsUnaryOperator op)

JsPrefixOperation

public JsPrefixOperation(SourceInfo sourceInfo,
                         JsUnaryOperator op,
                         JsExpression arg)

Method Detail

getKind

public NodeKind getKind()

Specified by:

getKind in class JsNode

isBooleanFalse

public boolean isBooleanFalse()

Specified by:

isBooleanFalse in interface CanBooleanEval

isBooleanTrue

public boolean isBooleanTrue()

Specified by:

isBooleanTrue in interface CanBooleanEval

isDefinitelyNotNull

public boolean isDefinitelyNotNull()

Description copied from class: JsExpression

True if the target expression is definitely not null.

Specified by:

isDefinitelyNotNull in class JsExpression

isDefinitelyNull

public boolean isDefinitelyNull()

Description copied from class: JsExpression

True if the target expression is definitely null.

Specified by:

isDefinitelyNull in class JsExpression

traverse

public void traverse(JsVisitor v,
                     JsContext ctx)

Description copied from interface: JsVisitable

Causes this object to have the visitor visit itself and its children.

Specified by:

traverse in interface JsVisitable

Overrides:

traverse in class JsUnaryOperation

Parameters:

v - the visitor that should traverse this node

ctx - the context of an existing traversal