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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;
using System.Collections.Generic;
using System.Linq;
using Microsoft.CodeAnalysis.PooledObjects;
namespace Microsoft.CodeAnalysis
{
internal static class GreenNodeExtensions
{
public static TNode WithAnnotationsGreen<TNode>(this TNode node, IEnumerable<SyntaxAnnotation> annotations) where TNode : GreenNode
{
var newAnnotations = ArrayBuilder<SyntaxAnnotation>.GetInstance();
foreach (var candidate in annotations)
{
if (!newAnnotations.Contains(candidate))
{
newAnnotations.Add(candidate);
}
}
if (newAnnotations.Count == 0)
{
newAnnotations.Free();
var existingAnnotations = node.GetAnnotations();
if (existingAnnotations == null || existingAnnotations.Length == 0)
{
return node;
}
else
{
return (TNode)node.SetAnnotations(null);
}
}
else
{
return (TNode)node.SetAnnotations(newAnnotations.ToArrayAndFree());
}
}
public static TNode WithAdditionalAnnotationsGreen<TNode>(this TNode node, IEnumerable<SyntaxAnnotation>? annotations) where TNode : GreenNode
{
var existingAnnotations = node.GetAnnotations();
if (annotations == null)
{
return node;
}
var newAnnotations = ArrayBuilder<SyntaxAnnotation>.GetInstance();
newAnnotations.AddRange(existingAnnotations);
foreach (var candidate in annotations)
{
if (!newAnnotations.Contains(candidate))
{
newAnnotations.Add(candidate);
}
}
if (newAnnotations.Count == existingAnnotations.Length)
{
newAnnotations.Free();
return node;
}
else
{
return (TNode)node.SetAnnotations(newAnnotations.ToArrayAndFree());
}
}
public static TNode WithoutAnnotationsGreen<TNode>(this TNode node, IEnumerable<SyntaxAnnotation>? annotations) where TNode : GreenNode
{
var existingAnnotations = node.GetAnnotations();
if (annotations == null || existingAnnotations.Length == 0)
{
return node;
}
var removalAnnotations = ArrayBuilder<SyntaxAnnotation>.GetInstance();
removalAnnotations.AddRange(annotations);
try
{
if (removalAnnotations.Count == 0)
{
return node;
}
var newAnnotations = ArrayBuilder<SyntaxAnnotation>.GetInstance();
foreach (var candidate in existingAnnotations)
{
if (!removalAnnotations.Contains(candidate))
{
newAnnotations.Add(candidate);
}
}
return (TNode)node.SetAnnotations(newAnnotations.ToArrayAndFree());
}
finally
{
removalAnnotations.Free();
}
}
public static TNode WithDiagnosticsGreen<TNode>(this TNode node, DiagnosticInfo[]? diagnostics) where TNode : GreenNode
{
return (TNode)node.SetDiagnostics(diagnostics);
}
public static TNode WithoutDiagnosticsGreen<TNode>(this TNode node) where TNode : GreenNode
{
var current = node.GetDiagnostics();
if (current == null || current.Length == 0)
{
return node;
}
return (TNode)node.SetDiagnostics(null);
}
}
}
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