org.eclipse.tracecompass.ctf.core/src/org/eclipse/tracecompass/ctf/core/event/scope/EventHeaderScope.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are made
   5  * available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *      Matthew Khouzam - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.ctf.core.event.scope;
  14
  15 import org.eclipse.jdt.annotation.NonNullByDefault;
  16 import org.eclipse.jdt.annotation.Nullable;
  17
  18 /**
  19  * A lttng specific speedup node (the packet header with ID and V) of a lexical
  20  * scope
  21  *
  22  * @author Matthew Khouzam
  23  */
  24 @NonNullByDefault
  25 public class EventHeaderScope extends LexicalScope {
  26
  27     /**
  28      * Event header id string
  29      */
  30     public static final LexicalScope EVENT_HEADER_ID = new LexicalScope(EVENT_HEADER, "id"); //$NON-NLS-1$
  31
  32     /**
  33      * Event header v as in variant string
  34      */
  35     public static final LexicalScope EVENT_HEADER_V = new EventHeaderVScope(EVENT_HEADER, "v"); //$NON-NLS-1$
  36
  37     /**
  38      * The scope constructor
  39      *
  40      * @param parent
  41      *            The parent node, can be null, but shouldn't
  42      * @param name
  43      *            the name of the field
  44      */
  45     public EventHeaderScope(LexicalScope parent, String name) {
  46         super(parent, name);
  47     }
  48
  49     @Override
  50     @Nullable
  51     public LexicalScope getChild(String name) {
  52         if (name.equals(EVENT_HEADER_ID.getName())) {
  53             return EVENT_HEADER_ID;
  54         }
  55         if (name.equals(EVENT_HEADER_V.getName())) {
  56             return EVENT_HEADER_V;
  57         }
  58         return super.getChild(name);
  59     }
  60
  61     @Override
  62     public String toString() {
  63         return "event.header"; //$NON-NLS-1$
  64     }
  65
  66 }