/*

 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package jdk.nashorn.internal.ir;

import java.util.Collections;

import java.util.List;

import jdk.nashorn.internal.codegen.types.Type;

import jdk.nashorn.internal.ir.visitor.NodeVisitor;

/**

 * Represents ES6 template string expression. Note that this Node class is used

 * only in "parse only" mode. In evaluation mode, Parser directly folds template

 * literal as string concatenation. Parser API uses this node to represent ES6

 * template literals "as is" rather than as a String concatenation.

 */

public final class TemplateLiteral extends Expression {

    private static final long serialVersionUID = 1L;

    private final List<Expression> exprs;

    public TemplateLiteral(final List<Expression> exprs) {

        super(exprs.get(0).getToken(), exprs.get(exprs.size() - 1).finish);

        this.exprs = exprs;

    }

    @Override

    public Type getType() {

        return Type.STRING;

    }

    @Override

    public Node accept(NodeVisitor<? extends LexicalContext> visitor) {

        if (visitor.enterTemplateLiteral(this)) {

            return visitor.leaveTemplateLiteral(this);

        }

        return this;

    }

    @Override

    public void toString(StringBuilder sb, boolean printType) {

        for (Expression expr : exprs) {

            sb.append(expr);

        }

    }

    /**

     * The list of expressions that are part of this template literal.

     *

     * @return the list of expressions that are part of this template literal.

     */

    public List<Expression> getExpressions() {

        return Collections.unmodifiableList(exprs);

    }

}