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Viewing changes to contrib/NGit/NGit.Revwalk/LIFORevQueue.cs

  • Committer: Bazaar Package Importer
  • Author(s): Jo Shields
  • Date: 2011-06-27 17:03:13 UTC
  • mto: (1.8.1 upstream)
  • mto: This revision was merged to the branch mainline in revision 54.
  • Revision ID: james.westby@ubuntu.com-20110627170313-6cvz3s19x6e9hqe9
Import upstream version 2.5.92+dfsg

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contrib/NGit/NGit.Revwalk/LIFORevQueue.cs
 
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/*
 
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This code is derived from jgit (http://eclipse.org/jgit).
 
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Copyright owners are documented in jgit's IP log.
 
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This program and the accompanying materials are made available
 
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under the terms of the Eclipse Distribution License v1.0 which
 
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accompanies this distribution, is reproduced below, and is
 
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available at http://www.eclipse.org/org/documents/edl-v10.php
 
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All rights reserved.
 
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Redistribution and use in source and binary forms, with or
 
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without modification, are permitted provided that the following
 
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conditions are met:
 
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- Redistributions of source code must retain the above copyright
 
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  notice, this list of conditions and the following disclaimer.
 
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- Redistributions in binary form must reproduce the above
 
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  copyright notice, this list of conditions and the following
 
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  disclaimer in the documentation and/or other materials provided
 
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  with the distribution.
 
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- Neither the name of the Eclipse Foundation, Inc. nor the
 
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  names of its contributors may be used to endorse or promote
 
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  products derived from this software without specific prior
 
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  written permission.
 
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
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*/
 
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using System.Text;
 
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using NGit.Revwalk;
 
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using Sharpen;
 
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namespace NGit.Revwalk
 
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{
 
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        /// <summary>A queue of commits in LIFO order.</summary>
 
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        /// <remarks>A queue of commits in LIFO order.</remarks>
 
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        public class LIFORevQueue : BlockRevQueue
 
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        {
 
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                private BlockRevQueue.Block head;
 
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                /// <summary>Create an empty LIFO queue.</summary>
 
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                /// <remarks>Create an empty LIFO queue.</remarks>
 
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                public LIFORevQueue() : base()
 
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                {
 
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                }
 
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                /// <exception cref="NGit.Errors.MissingObjectException"></exception>
 
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                /// <exception cref="NGit.Errors.IncorrectObjectTypeException"></exception>
 
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                /// <exception cref="System.IO.IOException"></exception>
 
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                internal LIFORevQueue(Generator s) : base(s)
 
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                {
 
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                }
 
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                public override void Add(RevCommit c)
 
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                {
 
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                        BlockRevQueue.Block b = head;
 
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                        if (b == null || !b.CanUnpop())
 
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                        {
 
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                                b = free.NewBlock();
 
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                                b.ResetToEnd();
 
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                                b.next = head;
 
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                                head = b;
 
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                        }
 
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                        b.Unpop(c);
 
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                }
 
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                internal override RevCommit Next()
 
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                {
 
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                        BlockRevQueue.Block b = head;
 
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                        if (b == null)
 
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                        {
 
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                                return null;
 
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                        }
 
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                        RevCommit c = b.Pop();
 
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                        if (b.IsEmpty())
 
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                        {
 
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                                head = b.next;
 
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                                free.FreeBlock(b);
 
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                        }
 
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                        return c;
 
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                }
 
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                public override void Clear()
 
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                {
 
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                        head = null;
 
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                        free.Clear();
 
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                }
 
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                internal override bool EverbodyHasFlag(int f)
 
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                {
 
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                        for (BlockRevQueue.Block b = head; b != null; b = b.next)
 
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                        {
 
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                                for (int i = b.headIndex; i < b.tailIndex; i++)
 
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                                {
 
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                                        if ((b.commits[i].flags & f) == 0)
 
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                                        {
 
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                                                return false;
 
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                                        }
 
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                                }
 
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                        }
 
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                        return true;
 
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                }
 
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                internal override bool AnybodyHasFlag(int f)
 
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                {
 
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                        for (BlockRevQueue.Block b = head; b != null; b = b.next)
 
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                        {
 
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                                for (int i = b.headIndex; i < b.tailIndex; i++)
 
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                                {
 
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                                        if ((b.commits[i].flags & f) != 0)
 
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                                        {
 
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                                                return true;
 
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                                        }
 
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                                }
 
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                        }
 
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                        return false;
 
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                }
 
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                public override string ToString()
 
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                {
 
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                        StringBuilder s = new StringBuilder();
 
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                        for (BlockRevQueue.Block q = head; q != null; q = q.next)
 
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                        {
 
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                                for (int i = q.headIndex; i < q.tailIndex; i++)
 
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                                {
 
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                                        Describe(s, q.commits[i]);
 
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                                }
 
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                        }
 
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                        return s.ToString();
 
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                }
 
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        }
 
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}