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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2021 Nordix Foundation
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.cps.cpspath.parser;
import java.util.Map;
import lombok.AccessLevel;
import lombok.Getter;
import lombok.Setter;
import org.antlr.v4.runtime.BaseErrorListener;
import org.antlr.v4.runtime.CharStreams;
import org.antlr.v4.runtime.CommonTokenStream;
import org.antlr.v4.runtime.RecognitionException;
import org.antlr.v4.runtime.Recognizer;
import org.onap.cps.cpspath.parser.antlr4.CpsPathLexer;
import org.onap.cps.cpspath.parser.antlr4.CpsPathParser;
@Getter
@Setter(AccessLevel.PACKAGE)
public class CpsPathQuery {
private CpsPathQueryType cpsPathQueryType;
private String xpathPrefix;
private String leafName;
private Object leafValue;
private String descendantName;
private Map<String, Object> leavesData;
private String ancestorSchemaNodeIdentifier = "";
/**
* Returns a cps path query.
*
* @param cpsPathSource cps path
* @return a CpsPathQuery object.
*/
public static CpsPathQuery createFrom(final String cpsPathSource) {
final var inputStream = CharStreams.fromString(cpsPathSource);
final var cpsPathLexer = new CpsPathLexer(inputStream);
final var cpsPathParser = new CpsPathParser(new CommonTokenStream(cpsPathLexer));
cpsPathParser.addErrorListener(new BaseErrorListener() {
@Override
public void syntaxError(final Recognizer<?, ?> recognizer, final Object offendingSymbol, final int line,
final int charPositionInLine, final String msg, final RecognitionException e) {
throw new IllegalStateException("failed to parse at line " + line + " due to " + msg, e);
}
});
final var cpsPathBuilder = new CpsPathBuilder();
cpsPathParser.addParseListener(cpsPathBuilder);
cpsPathParser.cpsPath();
return cpsPathBuilder.build();
}
/**
* Has ancestor axis been populated.
*
* @return boolean value.
*/
public boolean hasAncestorAxis() {
return !(ancestorSchemaNodeIdentifier.isEmpty());
}
}
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