1 /*
   2  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.nashorn.internal.ir;
  27 
  28 import java.util.Collections;
  29 import java.util.List;
  30 
  31 import jdk.nashorn.internal.codegen.types.Type;
  32 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
  33 
  34 /**
  35  * IR for CoverParenthesizedExpressionAndArrowParameterList, used only during parsing.
  36  */
  37 public final class ExpressionList extends Expression {
  38     private static final long serialVersionUID = 1L;
  39 
  40     private final List<Expression> expressions;
  41 
  42     /**
  43      * Constructor.
  44      *
  45      * @param token token
  46      * @param finish finish
  47      * @param expressions expression
  48      */
  49     public ExpressionList(final long token, final int finish, final List<Expression> expressions) {
  50         super(token, finish);
  51         this.expressions = expressions;
  52     }
  53 
  54     /**
  55      * Get the list of expressions.
  56      *
  57      * @return the list of expressions
  58      */
  59     public List<Expression> getExpressions() {
  60         return Collections.unmodifiableList(expressions);
  61     }
  62 
  63     @Override
  64     public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
  65         throw new UnsupportedOperationException();
  66     }
  67 
  68     @Override
  69     public Type getType() {
  70         return null;
  71     }
  72 
  73     @Override
  74     public void toString(StringBuilder sb, boolean printType) {
  75         sb.append("(");
  76         boolean first = true;
  77         for (Expression expression : expressions) {
  78             if (first) {
  79                 first = false;
  80             } else {
  81                 sb.append(", ");
  82             }
  83             expression.toString(sb, printType);
  84         }
  85         sb.append(")");
  86     }
  87 }