org.specrunner.expressions
Interface IExpression

All Known Implementing Classes:

AbstractExpression, ExpressionJanino, ExpressionVariable

public interface IExpression

An expression.

Author:

Thiago Santos

Field Summary

static String

FEATURE_PRECEDENCE Feature to set expression evaluation order.

Method Summary

Object	evaluate(IContext context) Given a context, evaluates an expression silently.
Object	evaluate(IContext context, boolean silent) Given a context, evaluates the expression.
IExpressionFactory	getParent() The mother factory.
IExpressionItem[]	getPrecedence() Get evaluation precedence order.
void	setPrecedence(IExpressionItem[] precedence) Set evaluation precedence order.

Field Detail

FEATURE_PRECEDENCE

static final String FEATURE_PRECEDENCE

Feature to set expression evaluation order.

Method Detail

getParent

IExpressionFactory getParent()

The mother factory.

Returns:

The factory where the expression came from.

setPrecedence

void setPrecedence(IExpressionItem[] precedence)

Set evaluation precedence order.

Parameters:

precedence - The precedence.

getPrecedence

IExpressionItem[] getPrecedence()

Get evaluation precedence order.

Returns:

The current precedence.

evaluate

Object evaluate(IContext context)
                throws ExpressionException

Given a context, evaluates an expression silently.

Parameters:

context - A contextual information.

Returns:

The result of expression evaluation.

Throws:

ExpressionException - On evaluation errors.

evaluate

Object evaluate(IContext context,
                boolean silent)
                throws ExpressionException

Given a context, evaluates the expression.

Parameters:

context - A contextual information.

silent - true, for evaluation without exceptions, false, otherwise.

Returns:

The result of expression evaluation.

Throws:

ExpressionException - On evaluation errors.