org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/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.linuxtools.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  * @since 3.1
  24  */
  25 @NonNullByDefault
  26 public class EventHeaderScope extends LexicalScope {
  27
  28     /**
  29      * Event header id string
  30      */
  31     public static final LexicalScope EVENT_HEADER_ID = new LexicalScope(EVENT_HEADER, "id"); //$NON-NLS-1$
  32
  33     /**
  34      * Event header v as in variant string
  35      */
  36     public static final LexicalScope EVENT_HEADER_V = new EventHeaderVScope(EVENT_HEADER, "v"); //$NON-NLS-1$
  37
  38     /**
  39      * The scope constructor
  40      *
  41      * @param parent
  42      *            The parent node, can be null, but shouldn't
  43      * @param name
  44      *            the name of the field
  45      */
  46     public EventHeaderScope(LexicalScope parent, String name) {
  47         super(parent, name);
  48     }
  49
  50     @Override
  51     @Nullable
  52     public LexicalScope getChild(String name) {
  53         if (name.equals(EVENT_HEADER_ID.getName())) {
  54             return EVENT_HEADER_ID;
  55         }
  56         if (name.equals(EVENT_HEADER_V.getName())) {
  57             return EVENT_HEADER_V;
  58         }
  59         return super.getChild(name);
  60     }
  61
  62     @Override
  63     public String toString() {
  64         return "event.header"; //$NON-NLS-1$
  65     }
  66
  67 }