/*
 * 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 edu.stanford.futuredata.macrobase.sql.parser;

import static java.util.Objects.requireNonNull;

import com.google.common.collect.Iterables;
import java.util.EnumSet;

public class SqlParserOptions {

    private final EnumSet<IdentifierSymbol> allowedIdentifierSymbols = EnumSet
        .noneOf(IdentifierSymbol.class);

    public SqlParserOptions allowIdentifierSymbol(Iterable<IdentifierSymbol> identifierSymbols) {
        Iterables.addAll(allowedIdentifierSymbols, identifierSymbols);
        return this;
    }

    public EnumSet<IdentifierSymbol> getAllowedIdentifierSymbols() {
        return EnumSet.copyOf(allowedIdentifierSymbols);
    }

    public SqlParserOptions allowIdentifierSymbol(IdentifierSymbol... identifierSymbols) {
        for (IdentifierSymbol identifierSymbol : identifierSymbols) {
            allowedIdentifierSymbols
                .add(requireNonNull(identifierSymbol, "identifierSymbol is null"));
        }
        return this;
    }
}
