/*
 * Copyright 2009-2010 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.lib.srfi094;

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

/**
 *
 *
 * @author MORIGUCHI, Yuichiro 2011/07/02
 */
public final class SRFI94 {

	/**
	 * 
	 */
	public static final Symbol SAFE_FLAG =
		Symbol.getSymbol("*srfi-94-safe-mode*");

	/**
	 * 
	 * @param env
	 * @return
	 */
	public static boolean isSafe(Environment env) {
		Datum d = env.findDatum(SAFE_FLAG);

		return (d != null && d.isTrue());
	}

}
