minijlisp.util
Class Env

java.lang.Object
  |
  +--minijlisp.util.Env

public class Env

extends java.lang.Object

Scoped Map of bindings from Symbols to Objects.

Constructor Summary

Env()

Method Summary

Pair	access(Symbol symbol)
void	add(Pair newBinding)
void	add(Symbol symbol, java.lang.Object object)
void	enter()
void	leave()

Methods inherited from class java.lang.Object

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

Constructor Detail

Env

public Env()

Method Detail

enter

public void enter()

add

public void add(Symbol symbol,
                java.lang.Object object)

add

public void add(Pair newBinding)

leave

public void leave()

access

public Pair access(Symbol symbol)