net.sf.arise.piji
Interface Expression

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

AbstractNode

public interface Expression

extends java.io.Serializable

A super-interface for a Scheme expression.

Author:

Kjetil Valstadsve

Method Summary

java.lang.Object	evaluate(Context context) Evaluates this expression in a given scheme context
java.lang.String	toSchemeString() Returns this expression in a string form

Method Detail

evaluate

public java.lang.Object evaluate(Context context)
                          throws java.lang.Throwable

Evaluates this expression in a given scheme context

Parameters:

context - The context to evaluate in

Returns:

The result of the evaluation

Throws:

java.lang.Throwable - iff the evaluation goes awry

toSchemeString

public java.lang.String toSchemeString()

Returns this expression in a string form

Returns:

This expression in a string form