jeb.api.ast

Class Expression

java.lang.Object

jeb.api.ast.NonStatement

jeb.api.ast.Expression

All Implemented Interfaces:

IElement, IExpression

Direct Known Subclasses:

Predicate

public class Expression
extends NonStatement
implements IExpression

This AST element is used to represent arithmetic or logical expressions.

An expression consists of one or two members (the left and right members) and an operator. The left member is optional, and should be null for unary operators.

Examples:

• a + 1
• a * ((int)b - foo())
• !x
• x ^ y | z

Note: Currently, expressions are read-only elements.

Since:

1.4.201309040

See Also:

Operator

Method Summary

Modifier and Type	Method and Description
static Expression	build(IExpression left, Operator operator, IExpression right) Create an expression.
IExpression	getLeft() Get the left sub-expression.
Operator	getOperator() Get the expression's operator.
IExpression	getRight() Get the right sub-expression.

Methods inherited from class jeb.api.ast.NonStatement

attachTag, getSubElements, replaceSubElement, retrieveTag

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface jeb.api.ast.IElement

attachTag, getSubElements, replaceSubElement, retrieveTag

Method Detail

build

public static Expression build(IExpression left,
                               Operator operator,
                               IExpression right)

Create an expression.

Parameters:

left - optional left expression, should be null if the operator is a unary operator

operator - the operator

right - mandatory right expression

Returns:

the new expression element

Since:

1.4.201309040

getLeft

public IExpression getLeft()

Get the left sub-expression.

Returns:

the left expression, null if none

Since:

1.4.201309040

getRight

public IExpression getRight()

Get the right sub-expression.

Returns:

the left expression

Since:

1.4.201309040

getOperator

public Operator getOperator()

Get the expression's operator.

Returns:

the operator

Since:

1.4.201309040