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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.Shared.Extensions;
namespace Microsoft.CodeAnalysis;
public readonly struct SolutionChanges
{
private readonly Solution _newSolution;
private readonly Solution _oldSolution;
internal SolutionChanges(Solution newSolution, Solution oldSolution)
{
_newSolution = newSolution;
_oldSolution = oldSolution;
}
public IEnumerable<Project> GetAddedProjects()
{
foreach (var id in _newSolution.ProjectIds)
{
if (!_oldSolution.ContainsProject(id))
{
yield return _newSolution.GetRequiredProject(id);
}
}
}
public IEnumerable<ProjectChanges> GetProjectChanges()
{
var old = _oldSolution;
// if the project states are different then there is a change.
foreach (var id in _newSolution.ProjectIds)
{
var newState = _newSolution.GetProjectState(id);
var oldState = old.GetProjectState(id);
if (oldState != null && newState != null && newState != oldState)
{
yield return _newSolution.GetRequiredProject(id).GetChanges(_oldSolution.GetRequiredProject(id));
}
}
}
public IEnumerable<Project> GetRemovedProjects()
{
foreach (var id in _oldSolution.ProjectIds)
{
if (!_newSolution.ContainsProject(id))
{
yield return _oldSolution.GetRequiredProject(id);
}
}
}
public IEnumerable<AnalyzerReference> GetAddedAnalyzerReferences()
{
var oldAnalyzerReferences = new HashSet<AnalyzerReference>(_oldSolution.AnalyzerReferences);
foreach (var analyzerReference in _newSolution.AnalyzerReferences)
{
if (!oldAnalyzerReferences.Contains(analyzerReference))
{
yield return analyzerReference;
}
}
}
public IEnumerable<AnalyzerReference> GetRemovedAnalyzerReferences()
{
var newAnalyzerReferences = new HashSet<AnalyzerReference>(_newSolution.AnalyzerReferences);
foreach (var analyzerReference in _oldSolution.AnalyzerReferences)
{
if (!newAnalyzerReferences.Contains(analyzerReference))
{
yield return analyzerReference;
}
}
}
}
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