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//
// MSBuildTextEditorExtension.cs
//
// Authors:
// Michael Hutchinson <mhutch@xamarin.com>
//
// Copyright:
// (C) 2014 Xamarin Inc. (http://www.xamarin.com)
//
// 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;
using System.Collections.Generic;
using System.Threading;
using MonoDevelop.Core;
using MonoDevelop.Ide.CodeCompletion;
using MonoDevelop.Xml.Completion;
using MonoDevelop.Xml.Dom;
using MonoDevelop.Xml.Editor;
namespace MonoDevelop.Xml.MSBuild
{
class MSBuildTextEditorExtension : BaseXmlEditorExtension
{
public static readonly string MSBuildMimeType = "application/x-msbuild";
protected override void GetElementCompletions (CompletionDataList list)
{
AddMiscBeginTags (list);
var path = GetCurrentPath ();
if (path.Count == 0) {
list.Add (new XmlCompletionData ("Project", XmlCompletionData.DataType.XmlElement));
return;
}
var rr = ResolveElement (path);
if (rr == null)
return;
foreach (var c in rr.BuiltinChildren)
list.Add (new XmlCompletionData (c, XmlCompletionData.DataType.XmlElement));
var inferredChildren = GetInferredChildren (rr);
if (inferredChildren != null)
foreach (var c in inferredChildren)
list.Add (new XmlCompletionData (c, XmlCompletionData.DataType.XmlElement));
}
IEnumerable<string> GetInferredChildren (ResolveResult rr)
{
if (inferredCompletionData == null)
return null;
if (rr.ElementType == "Item") {
return inferredCompletionData.GetItemMetadata (rr.ElementName);
}
if (rr.ChildType != null) {
switch (rr.ChildType) {
case "Item":
return inferredCompletionData.GetItems ();
case "Task":
return inferredCompletionData.GetTasks ();
case "Property":
return inferredCompletionData.GetProperties ();
}
}
return null;
}
protected override CompletionDataList GetAttributeCompletions (IAttributedXObject attributedOb,
Dictionary<string, string> existingAtts)
{
var path = GetCurrentPath ();
var rr = ResolveElement (path);
if (rr == null)
return null;
var list = new CompletionDataList ();
foreach (var a in rr.BuiltinAttributes)
if (!existingAtts.ContainsKey (a))
list.Add (new XmlCompletionData (a, XmlCompletionData.DataType.XmlAttribute));
var inferredAttributes = GetInferredAttributes (rr);
if (inferredAttributes != null)
foreach (var a in inferredAttributes)
if (!existingAtts.ContainsKey (a))
list.Add (new XmlCompletionData (a, XmlCompletionData.DataType.XmlAttribute));
return list;
}
IEnumerable<string> GetInferredAttributes (ResolveResult rr)
{
if (inferredCompletionData == null || rr.ElementType != "Task")
return null;
return inferredCompletionData.GetTaskParameters (rr.ElementName);
}
static ResolveResult ResolveElement (IList<XObject> path)
{
//need to look up element by walking how the path, since at each level, if the parent has special children,
//then that gives us information to identify the type of its children
MSBuildElement el = null;
string elName = null, elType = null;
for (int i = 0; i < path.Count; i++) {
//if children of parent is known to be arbitrary data, give up on completion
if (el != null && el.ChildType == "Data")
return null;
//code completion is forgiving, all we care about best guess resolve for deepest child
var xel = path [i] as XElement;
if (xel != null && xel.Name.Prefix == null) {
if (el != null)
elType = el.ChildType;
elName = xel.Name.Name;
el = MSBuildElement.Get (elName, el);
if (el != null)
continue;
}
el = null;
elName = elType = null;
}
if (el == null)
return null;
return new ResolveResult {
ElementName = elName,
ElementType = elType,
ChildType = el.ChildType,
BuiltinAttributes = el.Attributes,
BuiltinChildren = el.Children,
};
}
class ResolveResult
{
public string ElementName;
public string ElementType;
public string ChildType;
public IEnumerable<string> BuiltinAttributes;
public IEnumerable<string> BuiltinChildren;
}
bool inferenceQueued = false;
MSBuildResolveContext inferredCompletionData;
void QueueInference ()
{
var doc = this.CU as XmlParsedDocument;
if (doc == null || doc.XDocument == null || inferenceQueued)
return;
if (inferredCompletionData != null) {
if ((doc.LastWriteTimeUtc - inferredCompletionData.TimeStampUtc).TotalSeconds < 5)
return;
}
inferenceQueued = true;
ThreadPool.QueueUserWorkItem (delegate {
try {
inferredCompletionData = MSBuildResolveContext.Create (doc, inferredCompletionData);
inferenceQueued = false;
} catch (Exception ex) {
LoggingService.LogInternalError ("Unhandled error in XML inference", ex);
}
});
}
protected override void OnParsedDocumentUpdated ()
{
QueueInference ();
base.OnParsedDocumentUpdated ();
}
}
}
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