ctf/org.eclipse.tracecompass.ctf.core/src/org/eclipse/tracecompass/internal/ctf/core/event/metadata/tsdl/TypeDeclarationStringParser.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 declaration String parser
  19  *
  20  * @author Matthew Khouzam
  21  *
  22  */
  23 public class TypeDeclarationStringParser implements ICommonTreeParser {
  24
  25     /**
  26      * Parameter Object with a list of common trees
  27      *
  28      * @author Matthew Khouzam
  29      *
  30      */
  31     public static final class Param implements ICommonTreeParserParameter {
  32         private final List<CommonTree> fList;
  33
  34         /**
  35          * Constructor
  36          *
  37          * @param list
  38          *            List of trees
  39          */
  40         public Param(List<CommonTree> list) {
  41             fList = list;
  42         }
  43     }
  44
  45     /**
  46      * Instance
  47      */
  48     public static final TypeDeclarationStringParser INSTANCE = new TypeDeclarationStringParser();
  49
  50     private TypeDeclarationStringParser() {
  51     }
  52
  53     /**
  54      * Creates the string representation of a type specifier.
  55      *
  56      * @param typeSpecifierList
  57      *            A TYPE_SPECIFIER node.
  58      *
  59      * @return A StringBuilder to which will be appended the string.
  60      * @throws ParseException
  61      *             invalid node
  62      */
  63     @Override
  64     public String parse(CommonTree typeSpecifierList, ICommonTreeParserParameter param) throws ParseException {
  65         if (!(param instanceof Param)) {
  66             throw new IllegalArgumentException("Param must be a " + Param.class.getCanonicalName()); //$NON-NLS-1$
  67         }
  68         List<CommonTree> pointers = ((Param) param).fList;
  69         StringBuilder sb = new StringBuilder();
  70         sb.append(TypeSpecifierListStringParser.INSTANCE.parse(typeSpecifierList, null));
  71         if (pointers != null) {
  72             CommonTree temp = new CommonTree();
  73             for (CommonTree pointer : pointers) {
  74                 temp.addChild(pointer);
  75             }
  76             sb.append(PointerListStringParser.INSTANCE.parse(temp, null));
  77         }
  78         return sb.toString();
  79     }
  80
  81 }