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Introduce the successor to node.Role for child-slot identity: the generator emits a CSharpSlotInfo per [Slot], exposed as node.Slot, plus a shared SlotKind enum for the polymorphic "is this node in an embedded-statement / condition / base-type slot?" comparisons a per-node identity cannot express. Migrate the printer and transform position checks from node.Role to node.Slot and node.Slot.Kind, and read identifier children and role-keyed writes through the typed properties. Role is still present and is removed later; output is unchanged. Assisted-by: Claude:claude-opus-4-8:Claude Codepull/3807/head
Siegfried Pammer
3 weeks ago
committed by
Siegfried Pammer
14 changed files with 188 additions and 44 deletions
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// 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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#nullable enable |
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using System; |
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namespace ICSharpCode.Decompiler.CSharp.Syntax |
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{ |
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/// <summary>
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/// Describes one child slot of a node type: its name, the declared child type, and whether it is a
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/// collection. Each slot has a single generated static instance (e.g.
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/// <c>BinaryOperatorExpression.LeftSlot</c>); <c>node.Slot</c> returns the slot a node occupies in
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/// its parent, so <c>node.Slot == X.YSlot</c> identifies a node's position by object identity (the
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/// successor to <c>node.Role == X.YRole</c>).
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/// </summary>
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public sealed class CSharpSlotInfo |
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{ |
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/// <summary>The slot's property name, e.g. "Left", "Body", "Parameters".</summary>
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public string Name { get; } |
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/// <summary>The declared child type (the element type for a collection slot).</summary>
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public Type ChildType { get; } |
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/// <summary>Whether the slot holds a collection of children rather than a single child.</summary>
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public bool IsCollection { get; } |
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/// <summary>
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/// Whether the slot is syntactically optional. Populated accurately once the null-object model
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/// is replaced by nullable reference types; currently informational.
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/// </summary>
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public bool IsOptional { get; } |
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/// <summary>
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/// The slot's kind, shared across node types (so <c>node.Slot.Kind == SlotKind.X</c> identifies a
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/// node's position the way <c>node.Role == Roles.X</c> did, including polymorphically).
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/// </summary>
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public SlotKind Kind { get; } |
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internal CSharpSlotInfo(string name, Type childType, bool isCollection, SlotKind kind, bool isOptional = false) |
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{ |
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Name = name; |
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ChildType = childType; |
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IsCollection = isCollection; |
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Kind = kind; |
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IsOptional = isOptional; |
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} |
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public override string ToString() => Name; |
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} |
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} |
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