/*
 * Copyright 2014 - 2020 Rafael Winterhalter
 *
 * 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.bytebuddy.matcher;

import net.bytebuddy.build.HashCodeAndEqualsPlugin;

import java.util.Set;

/**
 * An element matcher which checks if a string is in a set of strings.
 */
@HashCodeAndEqualsPlugin.Enhance
public class StringSetMatcher extends ElementMatcher.Junction.AbstractBase<String> {

    /**
     * The values to check against.
     */
    private final Set<String> values;

    /**
     * Creates a new string set matcher.
     *
     * @param values The values to check against.
     */
    public StringSetMatcher(Set<String> values) {
        this.values = values;
    }

    @Override
    public boolean matches(String target) {
        return values.contains(target);
    }

    @Override
    public String toString() {
        return "in(" + values + ")";
    }
}

@@ -1363,35 +1363,378 @@
     
-return %22in(%22 + values + %22)%22
+StringBuilder stringBuilder = new StringBuilder().append(%22in(%22);%0A        boolean first = true;%0A        for (String value : values) %7B%0A            if (first) %7B%0A                first = false;%0A            %7D else %7B%0A                stringBuilder.append(%22, %22);%0A            %7D%0A            stringBuilder.append(value);%0A        %7D%0A        return stringBuilder.append(%22)%22).toString()
 ;%0A  

Improve toString method.