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//
// ProjectElementContainer.cs
//
// Author:
// Leszek Ciesielski (skolima@gmail.com)
//
// (C) 2011 Leszek Ciesielski
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections.Generic;
using System.Linq;
using System.Xml;
using Microsoft.Build.Exceptions;
using Microsoft.Build.Internal;
namespace Microsoft.Build.Construction
{
public abstract class ProjectElementContainer : ProjectElement
{
internal ProjectElementContainer () {}
LinkedList<ProjectElement> children = new LinkedList<ProjectElement> ();
public IEnumerable<ProjectElement> AllChildren {
get {
foreach (var child in Children) {
var container = child as ProjectElementContainer;
if (container != null)
foreach (var containersChild in container.AllChildren)
yield return containersChild;
yield return child;
}
}
}
public ICollection<ProjectElement> Children {
get { return new CollectionFromEnumerable<ProjectElement> (
children.Where (p => !(p is ProjectCommentElement))); }
}
public ICollection<ProjectElement> ChildrenReversed {
get { return new CollectionFromEnumerable<ProjectElement> (
new ReverseEnumerable<ProjectElement> (children)); }
}
public int Count {
get { return children.Count; }
}
public ProjectElement FirstChild {
get { return children.First == null ? null : children.First.Value; }
private set { }
}
public ProjectElement LastChild {
get { return children.Last == null ? null: children.Last.Value; }
private set { }
}
public void AppendChild (ProjectElement child)
{
children.AddLast (child.LinkedListNode);
child.Parent = this;
}
public void InsertAfterChild (ProjectElement child, ProjectElement reference)
{
if (reference == null) {
PrependChild (child);
} else {
child.Parent = this;
children.AddAfter (reference.LinkedListNode, child.LinkedListNode);
}
}
public void InsertBeforeChild (ProjectElement child, ProjectElement reference)
{
if (reference == null) {
AppendChild (child);
} else {
child.Parent = this;
children.AddBefore (reference.LinkedListNode, child.LinkedListNode);
}
}
public void PrependChild (ProjectElement child)
{
children.AddFirst (child.LinkedListNode);
child.Parent = this;
}
public void RemoveAllChildren ()
{
foreach (var child in children)
RemoveChild (child);
}
public void RemoveChild (ProjectElement child)
{
child.Parent = null;
children.Remove (child.LinkedListNode);
}
internal override void SaveValue (XmlWriter writer)
{
base.SaveValue (writer);
foreach (var child in children)
child.Save (writer);
}
internal override void Load (XmlReader reader)
{
reader.Read ();
reader.MoveToContent ();
FillLocation (reader);
if (reader.LocalName != XmlName || reader.NamespaceURI != MSBuildNamespace)
throw CreateError (reader, string.Format ("Unexpected XML {0} \"{1}\" in namespace \"{2}\" appeared, while \"{3}\" in namespace \"{4}\" is expected.",
reader.NodeType, reader.LocalName, reader.NamespaceURI, XmlName, MSBuildNamespace), -1);
while (reader.MoveToNextAttribute ()) {
LoadAttribute (reader.Name, reader.Value);
}
LoadValue (reader);
}
internal override void LoadValue (XmlReader reader)
{
while (reader.Read ()) {
if (reader.NodeType == XmlNodeType.Element) {
var child = LoadChildElement (reader);
child.Load (reader.ReadSubtree ());
} else if (reader.NodeType == XmlNodeType.Comment) {
var commentElement = new ProjectCommentElement (ContainingProject);
commentElement.Load (reader);
AppendChild (commentElement);
}
}
}
internal abstract ProjectElement LoadChildElement (XmlReader reader);
}
}
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