61 lines
1.4 KiB
C#
61 lines
1.4 KiB
C#
using Canon.Core.Abstractions;
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using Canon.Core.Enums;
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using Canon.Core.SemanticParser;
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namespace Canon.Core.SyntaxNodes;
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public class IndexGeneratorEventArgs : EventArgs
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{
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public required ExpressionList IndexParameters { get; init; }
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}
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public class IdentifierVarPart : NonTerminatedSyntaxNode
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{
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public override NonTerminatorType Type => NonTerminatorType.IdVarPart;
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/// <summary>
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/// 数组索引的个数
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/// </summary>
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public int IndexCount { get; set; }
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/// <summary>
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/// 数组左边界列表
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/// </summary>
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public List<int> LeftBounds = new();
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public override void PreVisit(SyntaxNodeVisitor visitor)
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{
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visitor.PreVisit(this);
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RaiseEvent();
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}
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public override void PostVisit(SyntaxNodeVisitor visitor)
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{
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visitor.PostVisit(this);
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RaiseEvent();
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}
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/// <summary>
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/// 使用了索引产生式的事件
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/// </summary>
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public event EventHandler<IndexGeneratorEventArgs>? OnIndexGenerator;
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public static IdentifierVarPart Create(List<SyntaxNodeBase> children)
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{
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return new IdentifierVarPart { Children = children };
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}
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private void RaiseEvent()
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{
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if (Children.Count == 3)
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{
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OnIndexGenerator?.Invoke(this, new IndexGeneratorEventArgs()
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{
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IndexParameters = Children[1].Convert<ExpressionList>()
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});
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}
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OnIndexGenerator = null;
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}
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}
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