/*

 * Copyright (c) 2016, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package jdk.jshell;

import java.util.LinkedHashMap;

import java.util.List;

import javax.tools.Diagnostic;

import javax.tools.JavaFileObject;

import jdk.jshell.Wrap.CompoundWrap;

/**

 * The outer wrap for a set of snippets wrapped in a generated class

 * @author Robert Field

 */

public class OuterSnippetsClassWrap extends OuterWrap {

    private final String className;

    private final LinkedHashMap<Wrap, Snippet> wrapToSnippet;

    OuterSnippetsClassWrap(String className, CompoundWrap w, List<Snippet> snippets, List<Wrap> wraps) {

        super(w);

        assert snippets == null || snippets.size() == wraps.size();

        this.className = className;

        wrapToSnippet = new LinkedHashMap<>();

        for (int i = 0; i < snippets.size(); ++i) {

            wrapToSnippet.put(wraps.get(i), snippets.get(i));

        }

    }

    public Snippet wrapLineToSnippet(int wline) {

        Wrap wrap = ((CompoundWrap)w).wrapLineToWrap(wline);

        return wrapToSnippet.get(wrap);

    }

    @Override

    Diag wrapDiag(Diagnostic<? extends JavaFileObject> d) {

        return new WrappedDiagnostic(d) {

            @Override

            Snippet snippetOrNull() {

                Wrap wrap = ((CompoundWrap) w).wrapIndexToWrap(diag.getPosition());

                Snippet sn = wrapToSnippet.get(wrap);

                if (sn != null) {

                    return sn;

                } else {

                    return super.snippetOrNull();

                }

            }

        };

    }

    int ordinal(Snippet sn) {

        int i = 0;

        for (Snippet si : wrapToSnippet.values()) {

            if (si == sn) {

                return i;

            }

            ++i;

        }

        return -1;

    }

    @Override

    public String className() {

        return className;

    }

    @Override

    public String toString() {

        return "OSCW(" + className + ":" + w + ")";

    }

}