| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE |
| * file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file |
| * to You 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 org.apache.tuweni.toml; |
| |
| import org.apache.tuweni.toml.internal.TomlParser.QuotedKeyContext; |
| import org.apache.tuweni.toml.internal.TomlParser.UnquotedKeyContext; |
| import org.apache.tuweni.toml.internal.TomlParserBaseVisitor; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| final class KeyVisitor extends TomlParserBaseVisitor<List<String>> { |
| |
| private final List<String> keys = new ArrayList<>(); |
| |
| @Override |
| public List<String> visitUnquotedKey(UnquotedKeyContext ctx) { |
| keys.add(ctx.getText()); |
| return keys; |
| } |
| |
| @Override |
| public List<String> visitQuotedKey(QuotedKeyContext ctx) { |
| StringBuilder builder = ctx.accept(new QuotedStringVisitor()); |
| keys.add(builder.toString()); |
| return keys; |
| } |
| |
| @Override |
| protected List<String> aggregateResult(List<String> aggregate, List<String> nextResult) { |
| return aggregate == null ? null : nextResult; |
| } |
| |
| @Override |
| protected List<String> defaultResult() { |
| return keys; |
| } |
| } |