com.google.gwt.dev.js.ast

Class JsExpression

java.lang.Object

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

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

All Implemented Interfaces:

HasSourceInfo, JsVisitable, Serializable

Direct Known Subclasses:

JsArrayAccess, JsBinaryOperation, JsConditional, JsInvocation, JsLiteral, JsNameOf, JsNameRef, JsNew, JsNumericEntry, JsUnaryOperation

public abstract class JsExpression
extends JsNode

An abstract base class for all JavaScript expressions.

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JsExpression(SourceInfo sourceInfo)

Method Summary

Modifier and Type	Method and Description
abstract boolean	hasSideEffects() Determines whether the expression can cause side effects.
abstract boolean	isDefinitelyNotNull() True if the target expression is definitely not null.
abstract boolean	isDefinitelyNull() True if the target expression is definitely null.
boolean	isLeaf() Determines whether or not this expression is a leaf, such as a JsNameRef, JsBooleanLiteral, and so on.
JsExprStmt	makeStmt()

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

getKind, getSourceInfo, setSourceInfo, toSource, toSource, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode

Methods inherited from interface com.google.gwt.dev.js.ast.JsVisitable

traverse

Constructor Detail

JsExpression

protected JsExpression(SourceInfo sourceInfo)

Method Detail

hasSideEffects

public abstract boolean hasSideEffects()

Determines whether the expression can cause side effects.

isDefinitelyNotNull

public abstract boolean isDefinitelyNotNull()

True if the target expression is definitely not null.

isDefinitelyNull

public abstract boolean isDefinitelyNull()

True if the target expression is definitely null.

isLeaf

public boolean isLeaf()

Determines whether or not this expression is a leaf, such as a JsNameRef, JsBooleanLiteral, and so on. Leaf expressions never need to be parenthesized.

makeStmt

public JsExprStmt makeStmt()