/**
* Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.yangtools.yang.data.impl.leafref;
import java.io.IOException;
import java.io.InputStream;
import org.antlr.v4.runtime.ANTLRInputStream;
import org.antlr.v4.runtime.CommonTokenStream;
import org.antlr.v4.runtime.tree.ParseTreeWalker;
import org.opendaylight.yangtools.yang.data.impl.leafref.LeafRefPathParser.Path_argContext;
import org.opendaylight.yangtools.yang.model.api.Module;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import org.opendaylight.yangtools.yang.model.api.SchemaNode;
final class LeafRefPathParserImpl {
private final SchemaContext schemaContext;
private final Module module;
private final SchemaNode node;
public LeafRefPathParserImpl(final SchemaContext schemaContext, final Module currentModule, final SchemaNode currentNode) {
this.schemaContext = schemaContext;
this.module = currentModule;
this.node = currentNode;
}
public LeafRefPath parseLeafRefPathSourceToSchemaPath(final InputStream stream) throws IOException, LeafRefYangSyntaxErrorException {
final Path_argContext pathCtx = parseLeafRefPathSource(stream);
final ParseTreeWalker walker = new ParseTreeWalker();
final LeafRefPathParserListenerImpl leafRefPathParserListenerImpl = new LeafRefPathParserListenerImpl(schemaContext, module, node);
walker.walk(leafRefPathParserListenerImpl,pathCtx);
final LeafRefPath leafRefPath = leafRefPathParserListenerImpl.getLeafRefPath();
return leafRefPath;
}
private Path_argContext parseLeafRefPathSource(final InputStream stream) throws IOException, LeafRefYangSyntaxErrorException {
final LeafRefPathLexer lexer = new LeafRefPathLexer(new ANTLRInputStream(stream));
final CommonTokenStream tokens = new CommonTokenStream(lexer);
final LeafRefPathParser parser = new LeafRefPathParser(tokens);
parser.removeErrorListeners();
final LeafRefPathErrorListener errorListener = new LeafRefPathErrorListener(module);
parser.addErrorListener(errorListener);
final Path_argContext result = parser.path_arg();
errorListener.validate();
return result;
}
}