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Add DebuggerDisplay attributes to Protocol types (#1068)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
Co-authored-by: Stephen Halter <halter73@gmail.com>
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Copilot 2025-12-05 15:09:46 -08:00 • committed by GitHub
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52
src/ModelContextProtocol.Core/Protocol/ContentBlock.cs
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@ -356,6 +356,7 @@ public abstract class ContentBlock
}
/// <summary>Represents text provided to or from an LLM.</summary>
[DebuggerDisplay("Text = \"{Text}\"")]
public sealed class TextContentBlock : ContentBlock
{
/// <inheritdoc/>
@ -366,9 +367,13 @@ public sealed class TextContentBlock : ContentBlock
/// </summary>
[JsonPropertyName("text")]
public required string Text { get; set; }
/// <inheritdoc/>
public override string ToString() => Text ?? "";
}
/// <summary>Represents an image provided to or from an LLM.</summary>
[DebuggerDisplay("{DebuggerDisplay,nq}")]
public sealed class ImageContentBlock : ContentBlock
{
/// <inheritdoc/>
@ -388,9 +393,13 @@ public sealed class ImageContentBlock : ContentBlock
/// </remarks>
[JsonPropertyName("mimeType")]
public required string MimeType { get; set; }
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
private string DebuggerDisplay => $"MimeType = {MimeType}, Length = {DebuggerDisplayHelper.GetBase64LengthDisplay(Data)}";
}
/// <summary>Represents audio provided to or from an LLM.</summary>
[DebuggerDisplay("{DebuggerDisplay,nq}")]
public sealed class AudioContentBlock : ContentBlock
{
/// <inheritdoc/>
@ -410,12 +419,16 @@ public sealed class AudioContentBlock : ContentBlock
/// </remarks>
[JsonPropertyName("mimeType")]
public required string MimeType { get; set; }
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
private string DebuggerDisplay => $"MimeType = {MimeType}, Length = {DebuggerDisplayHelper.GetBase64LengthDisplay(Data)}";
}
/// <summary>Represents the contents of a resource, embedded into a prompt or tool call result.</summary>
/// <remarks>
/// It is up to the client how best to render embedded resources for the benefit of the LLM and/or the user.
/// </remarks>
[DebuggerDisplay("{DebuggerDisplay,nq}")]
public sealed class EmbeddedResourceBlock : ContentBlock
{
/// <inheritdoc/>
@ -433,12 +446,16 @@ public sealed class EmbeddedResourceBlock : ContentBlock
/// </remarks>
[JsonPropertyName("resource")]
public required ResourceContents Resource { get; set; }
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
private string DebuggerDisplay => $"Uri = \"{Resource.Uri}\"";
}
/// <summary>Represents a resource that the server is capable of reading, included in a prompt or tool call result.</summary>
/// <remarks>
/// Resource links returned by tools are not guaranteed to appear in the results of `resources/list` requests.
/// </remarks>
[DebuggerDisplay("Name = {Name}, Uri = \"{Uri}\"")]
public sealed class ResourceLinkBlock : ContentBlock
{
/// <inheritdoc/>
@ -503,6 +520,7 @@ public sealed class ResourceLinkBlock : ContentBlock
}
/// <summary>Represents a request from the assistant to call a tool.</summary>
[DebuggerDisplay("Name = {Name}, Id = {Id}")]
public sealed class ToolUseContentBlock : ContentBlock
{
/// <inheritdoc/>
@ -531,6 +549,7 @@ public sealed class ToolUseContentBlock : ContentBlock
}
/// <summary>Represents the result of a tool use, provided by the user back to the assistant.</summary>
[DebuggerDisplay("{DebuggerDisplay,nq}")]
public sealed class ToolResultContentBlock : ContentBlock
{
/// <inheritdoc/>
@ -575,4 +594,37 @@ public sealed class ToolResultContentBlock : ContentBlock
/// </remarks>
[JsonPropertyName("isError")]
public bool? IsError { get; set; }
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
private string DebuggerDisplay
{
get
{
if (IsError == true)
{
return $"ToolUseId = {ToolUseId}, IsError = true";
}
// Try to show the result content
if (Content.Count == 1 && Content[0] is TextContentBlock textBlock)
{
return $"ToolUseId = {ToolUseId}, Result = \"{textBlock.Text}\"";
}
if (StructuredContent.HasValue)
{
try
{
string json = StructuredContent.Value.GetRawText();
return $"ToolUseId = {ToolUseId}, Result = {json}";
}
catch
{
// Fall back to content count if GetRawText fails
}
}
return $"ToolUseId = {ToolUseId}, ContentCount = {Content.Count}";
}
}
}