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/*
* Copyright (C) 2014-2020 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package io.unlogged.core.configuration;
import io.unlogged.core.ConfigurationKeys;
import io.unlogged.core.configuration.ConfigurationSource.ListModification;
import java.util.*;
import static io.unlogged.core.configuration.ConfigurationSource.*;
public class BubblingConfigurationResolver implements ConfigurationResolver {
private final ConfigurationFile start;
private final ConfigurationFileToSource fileMapper;
public BubblingConfigurationResolver(ConfigurationFile start, ConfigurationFileToSource fileMapper) {
this.start = start;
this.fileMapper = fileMapper;
}
@SuppressWarnings("unchecked")
@Override
public T resolve(ConfigurationKey key) {
boolean isList = key.getType().isList();
List> listModificationsList = null;
boolean stopBubbling = false;
ConfigurationFile currentLevel = start;
Collection visited = new HashSet();
outer:
while (currentLevel != null) {
Deque round = new ArrayDeque();
round.push(currentLevel);
while (!round.isEmpty()) {
ConfigurationFile currentFile = round.pop();
if (currentFile == null || !visited.add(currentFile)) continue;
ConfigurationSource source = fileMapper.parsed(currentFile);
if (source == null) continue;
for (ConfigurationFile importFile : source.imports()) round.push(importFile);
Result stop = source.resolve(ConfigurationKeys.STOP_BUBBLING);
stopBubbling = stopBubbling || (stop != null && Boolean.TRUE.equals(stop.getValue()));
Result result = source.resolve(key);
if (result == null) continue;
if (isList) {
if (listModificationsList == null) listModificationsList = new ArrayList>();
listModificationsList.add((List) result.getValue());
}
if (result.isAuthoritative()) {
if (isList) break outer;
return (T) result.getValue();
}
}
if (stopBubbling) break;
currentLevel = currentLevel.parent();
}
if (!isList) return null;
if (listModificationsList == null) return (T) Collections.emptyList();
List