111 lines
3.1 KiB
C#
111 lines
3.1 KiB
C#
//
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// Authors
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// Sebastien Pouliot <sebastien@xamarin.com>
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//
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// Copyright 2013 Xamarin Inc. http://www.xamarin.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Xml.Linq;
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namespace Mono.ApiTools {
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abstract class Comparer {
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protected List<XElement> removed;
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protected ApiChanges modified;
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public Comparer (State state)
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{
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State = state;
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removed = new List<XElement> ();
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modified = new ApiChanges (state);
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}
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public State State { get; }
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public TextWriter Output {
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get { return State.Output; }
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}
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public Formatter Formatter {
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get { return State.Formatter; }
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}
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protected TextWriter Indent ()
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{
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for (int i = 0; i < State.Indent; i++)
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State.Output.Write ("\t");
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return State.Output;
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}
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public abstract void Added (XElement target, bool wasParentAdded);
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public abstract void Modified (XElement source, XElement target, ApiChanges changes);
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public abstract void Removed (XElement source);
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public virtual bool Equals (XElement source, XElement target, ApiChanges changes)
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{
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return XNode.DeepEquals (source, target);
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}
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public abstract void SetContext (XElement current);
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public virtual void Compare (IEnumerable<XElement> source, IEnumerable<XElement> target)
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{
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removed.Clear ();
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modified.Clear ();
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foreach (var s in source) {
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SetContext (s);
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string sn = s.GetAttribute ("name");
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var t = target == null ? null : target.SingleOrDefault (x => x.GetAttribute ("name") == sn);
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if (t == null) {
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// not in target, it was removed
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removed.Add (s);
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} else {
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t.Remove ();
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// possibly modified
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if (Equals (s, t, modified))
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continue;
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// still in target so will be part of Added
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Modified (s, t, modified);
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}
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}
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// delayed, that way we show "Modified", "Added" and then "Removed"
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foreach (var item in removed) {
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SetContext (item);
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Removed (item);
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}
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// remaining == newly added in target
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if (target != null) {
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foreach (var item in target) {
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SetContext (item);
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Added (item, false);
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}
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}
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}
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}
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} |