/*
 * Copyright 2009 Yuichiro Moriguchi
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.morilib.lisp.r6rs;

import net.morilib.lisp.Environment;
import net.morilib.lisp.Symbol;

public class SymbolEnv {
	
	private Symbol symbol;
	private Environment environment;
	
	
	/*package*/ SymbolEnv(Symbol s, Environment e) {
		if(s == null || e == null) {
			throw new NullPointerException();
		}
		symbol = s;
		environment = e;
	}

	/**
	 * @return the symbol
	 */
	public Symbol getSymbol() {
		return symbol;
	}

	/**
	 * @return the environment
	 */
	public Environment getEnvironment() {
		return environment;
	}
	
	
	/*package*/ SymbolEnv prototype(Symbol s) {
		return new SymbolEnv(s, environment);
	}
	
}
