| /******************************************************************************* |
| * Copyright (c) 2015 Ericsson |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| *******************************************************************************/ |
| package org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.event; |
| |
| import static org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.TsdlUtils.isUnaryInteger; |
| |
| import org.antlr.runtime.tree.CommonTree; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.ICommonTreeParser; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.ParseException; |
| import org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl.UnaryIntegerParser; |
| |
| /** |
| * An event identifier (ID) relates to the class (a type) of event within an |
| * event stream, e.g. event irq_entry. |
| * |
| * @author Matthew Khouzam - Initial API and implementation |
| * @author Efficios - Description |
| * |
| */ |
| public final class EventIDParser implements ICommonTreeParser { |
| |
| private static final String INVALID_VALUE_ERROR = "Invalid value for event id"; //$NON-NLS-1$ |
| |
| /** |
| * The instance |
| */ |
| public static final EventIDParser INSTANCE = new EventIDParser(); |
| |
| private EventIDParser() { |
| } |
| |
| @Override |
| public Long parse(CommonTree tree, ICommonTreeParserParameter param) throws ParseException { |
| |
| CommonTree firstChild = (CommonTree) tree.getChild(0); |
| |
| if (isUnaryInteger(firstChild)) { |
| if (tree.getChildCount() > 1) { |
| throw new ParseException(INVALID_VALUE_ERROR); |
| } |
| long intval = UnaryIntegerParser.INSTANCE.parse(firstChild, null); |
| if (intval > Integer.MAX_VALUE) { |
| throw new ParseException("Event id larger than int.maxvalue, something is amiss"); //$NON-NLS-1$ |
| } |
| return intval; |
| } |
| throw new ParseException(INVALID_VALUE_ERROR); |
| } |
| |
| } |