package com.leon.cool.lang.ast;

import com.leon.cool.lang.object.CoolObject;
import com.leon.cool.lang.support.infrastructure.Context;
import com.leon.cool.lang.tree.compile.TreeVisitor;
import com.leon.cool.lang.tree.runtime.EvalTreeVisitor;

/**
 * Copyright leon
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.
 *
 * @author leon on 15-10-31
 */
public class Neg extends Expression {
    public final Expression expr;

    public Neg(Expression expr) {
        this.expr = expr;
    }

    @Override
    public String toString() {
        return "Neg{" +
                "expr=" + expr +
                '}';
    }

    @Override
    public void accept(TreeVisitor visitor) {
        visitor.applyNeg(this);
    }

    @Override
    public CoolObject accept(EvalTreeVisitor visitor, Context context) {
        return visitor.applyNeg(this, context);
    }

}
