io.hyperfoil.core.parser.AbstractParser Maven / Gradle / Ivy
/*
* Copyright 2018 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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 io.hyperfoil.core.parser;
import java.util.HashMap;
import java.util.Map;
import org.yaml.snakeyaml.events.Event;
import org.yaml.snakeyaml.events.MappingEndEvent;
import org.yaml.snakeyaml.events.MappingStartEvent;
import org.yaml.snakeyaml.events.ScalarEvent;
abstract class AbstractParser implements Parser {
Map> subBuilders = new HashMap<>();
void callSubBuilders(Context ctx, S target) throws ParserException {
ctx.expectEvent(MappingStartEvent.class);
while (ctx.hasNext()) {
Event next = ctx.next();
if (MappingEndEvent.class.isInstance(next)) {
return;
} else if (next instanceof ScalarEvent) {
ScalarEvent event = (ScalarEvent) next;
Parser builder = subBuilders.get(event.getValue());
if (builder == null) {
throw new ParserException(event, "Invalid configuration label: '" + event.getValue() + "', expected one of " + subBuilders.keySet());
}
builder.parse(ctx, target);
} else {
throw ctx.unexpectedEvent(next);
}
}
throw ctx.noMoreEvents(MappingEndEvent.class);
}
protected void register(String property, Parser parser) {
Parser prev = subBuilders.put(property, parser);
assert prev == null;
}
}