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//
// TaskBatchingImpl.cs: Class that implements Task Batching Algorithm from the wiki.
//
// Author:
// Marek Sieradzki (marek.sieradzki@gmail.com)
// Ankit Jain (jankit@novell.com)
//
// (C) 2005 Marek Sieradzki
// Copyright 2008 Novell, Inc (http://www.novell.com)
// Copyright 2009 Novell, Inc (http://www.novell.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.
#if NET_2_0
using System;
using System.Collections.Generic;
using System.Xml;
namespace Microsoft.Build.BuildEngine {
internal class TaskBatchingImpl : BatchingImplBase
{
public TaskBatchingImpl (Project project)
: base (project)
{
}
public bool Build (BuildTask buildTask, out bool executeOnErrors)
{
executeOnErrors = false;
try {
Init ();
// populate list of referenced items and metadata
ParseTaskAttributes (buildTask);
if (consumedMetadataReferences.Count == 0) {
// No batching required
if (ConditionParser.ParseAndEvaluate (buildTask.Condition, project))
return buildTask.Execute ();
else // skipped, it should be logged
return true;
}
BatchAndPrepareBuckets ();
return Run (buildTask, out executeOnErrors);
} finally {
consumedItemsByName = null;
consumedMetadataReferences = null;
consumedQMetadataReferences = null;
consumedUQMetadataReferences = null;
batchedItemsByName = null;
commonItemsByName = null;
}
}
bool Run (BuildTask buildTask, out bool executeOnErrors)
{
executeOnErrors = false;
// Run the task in batches
bool retval = true;
if (buckets.Count == 0) {
// batched mode, but no values in the corresponding items!
if (ConditionParser.ParseAndEvaluate (buildTask.Condition, project)) {
retval = buildTask.Execute ();
if (!retval && !buildTask.ContinueOnError)
executeOnErrors = true;
}
return retval;
}
// batched
foreach (Dictionary<string, BuildItemGroup> bucket in buckets) {
project.PushBatch (bucket, commonItemsByName);
try {
if (ConditionParser.ParseAndEvaluate (buildTask.Condition, project)) {
retval = buildTask.Execute ();
if (!retval && !buildTask.ContinueOnError) {
executeOnErrors = true;
break;
}
}
} finally {
project.PopBatch ();
}
}
return retval;
}
// Parse task attributes to get list of referenced metadata and items
// to determine batching
//
void ParseTaskAttributes (BuildTask buildTask)
{
foreach (XmlAttribute attrib in buildTask.TaskElement.Attributes)
ParseAttribute (attrib.Value);
foreach (XmlNode xn in buildTask.TaskElement.ChildNodes) {
XmlElement xe = xn as XmlElement;
if (xe == null)
continue;
//FIXME: error on any other child
if (String.Compare (xe.LocalName, "Output", StringComparison.Ordinal) == 0) {
foreach (XmlAttribute attrib in xe.Attributes)
ParseAttribute (attrib.Value);
}
}
}
}
}
#endif
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