ctf/org.eclipse.tracecompass.ctf.core/src/org/eclipse/tracecompass/internal/ctf/core/event/metadata/tsdl/TypeSpecifierListStringParser.java

   1 /*******************************************************************************
   2  * Copyright (c) 2015 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *******************************************************************************/
   9 package org.eclipse.tracecompass.internal.ctf.core.event.metadata.tsdl;
  10
  11 import java.util.List;
  12
  13 import org.antlr.runtime.tree.CommonTree;
  14 import org.eclipse.tracecompass.internal.ctf.core.event.metadata.ICommonTreeParser;
  15 import org.eclipse.tracecompass.internal.ctf.core.event.metadata.ParseException;
  16
  17 /**
  18  * Type specifier list string parser, parses a list of names
  19  *
  20  * @author Matthew Khouzam
  21  *
  22  */
  23 public class TypeSpecifierListStringParser implements ICommonTreeParser {
  24
  25     /**
  26      * Instance
  27      */
  28     public static final TypeSpecifierListStringParser INSTANCE = new TypeSpecifierListStringParser();
  29
  30     private TypeSpecifierListStringParser() {
  31     }
  32
  33     /**
  34      * Creates the string representation of a type specifier.
  35      *
  36      * @param typeSpecifierList
  37      *            A TYPE_SPECIFIER node.
  38      * @param param
  39      *            unused
  40      *
  41      * @return A StringBuilder to which will be appended the string.
  42      * @throws ParseException
  43      *             invalid node
  44      */
  45     @Override
  46     public StringBuilder parse(CommonTree typeSpecifierList, ICommonTreeParserParameter param) throws ParseException {
  47         StringBuilder sb = new StringBuilder();
  48         List<CommonTree> children = typeSpecifierList.getChildren();
  49
  50         boolean firstItem = true;
  51
  52         for (CommonTree child : children) {
  53             if (!firstItem) {
  54                 sb.append(' ');
  55
  56             }
  57
  58             firstItem = false;
  59
  60             /* Append the string that represents this type specifier. */
  61             sb.append(TypeSpecifierListNameParser.INSTANCE.parse(child, null));
  62         }
  63         return sb;
  64     }
  65
  66 }