mirror of
https://github.com/icsharpcode/ILSpy.git
synced 2026-10-12 11:09:54 +00:00
Siegfried Pammer
04505bbdf2
The C# debug-steps view highlights and centers the exact AST node a transform changed; the ILAst view already had the step tree and replay-at-step but produced no highlight. Bring it to parity. IL rendering has no token-writer seam like the C# output visitor, so per-instruction text spans are recorded by bracketing ILInstruction.WriteTo via a new INodeTrackingOutput. The dominant inst.ReplaceWith(newInst) transform pattern detaches the instruction passed to Step, so ILTransformContext gains EndStep to record the produced instruction; Stepper additionally records the position's ancestor chain as fallback candidates before the step-limit throw, so the "show state before" view -- which halts at the selected step -- still resolves to a surviving ancestor (ultimately the ILFunction). The highlight-range resolver is shared with the C# language. Assisted-by: Claude:claude-opus-4-8:Claude Code
60 lines
2.6 KiB
C#
60 lines
2.6 KiB
C#
// Copyright (c) 2026 AlphaSierraPapa for the SharpDevelop Team
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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namespace ICSharpCode.Decompiler
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{
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/// <summary>
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/// Optional capability of an <see cref="ITextOutput"/> that records the rendered text span
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/// of written nodes, so a node can later be mapped back to its character range (used for
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/// debug-step highlighting). Outputs that don't track nodes simply don't implement this.
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/// </summary>
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public interface INodeTrackingOutput
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{
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/// <summary>Marks the start offset of <paramref name="node"/>'s rendered span.</summary>
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void MarkNodeStart(object node);
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/// <summary>
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/// Marks the end of <paramref name="node"/>'s rendered span; pairs with the most recent
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/// <see cref="MarkNodeStart"/> for the same node.
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/// </summary>
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void MarkNodeEnd(object node);
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}
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public static class NodeTrackingOutputExtensions
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{
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/// <summary>
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/// Records the start of <paramref name="node"/>'s rendered span when <paramref name="output"/>
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/// supports node tracking; a cheap no-op otherwise. Safe to call unconditionally from any
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/// node-writing code path.
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/// </summary>
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public static void MarkNodeStart(this ITextOutput output, object node)
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{
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(output as INodeTrackingOutput)?.MarkNodeStart(node);
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}
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/// <summary>
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/// Records the end of <paramref name="node"/>'s rendered span when <paramref name="output"/>
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/// supports node tracking; a cheap no-op otherwise. Must pair with <see cref="MarkNodeStart"/>.
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/// </summary>
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public static void MarkNodeEnd(this ITextOutput output, object node)
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{
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(output as INodeTrackingOutput)?.MarkNodeEnd(node);
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}
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}
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}
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