104 lines
2.9 KiB
C#
104 lines
2.9 KiB
C#
using Canon.Core.Abstractions;
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using Canon.Core.CodeGenerators;
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using Canon.Core.Enums;
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using Canon.Core.LexicalParser;
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namespace Canon.Core.SyntaxNodes;
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public class AssignGeneratorEventArgs : EventArgs
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{
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public required Variable Variable { get; init; }
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public required Expression Expression { get; init; }
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}
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public class IfGeneratorEventArgs : EventArgs
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{
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public required Expression Condition { get; init; }
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public required Statement Sentence { get; init; }
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public required ElsePart ElseSentence { get; init; }
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}
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public class ForGeneratorEventArgs : EventArgs
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{
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public required IdentifierSemanticToken Iterator { get; init; }
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public required Expression Begin { get; init; }
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public required Expression End { get; init; }
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public required Statement Sentence { get; init; }
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}
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public class Statement : NonTerminatedSyntaxNode
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{
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public override NonTerminatorType Type => NonTerminatorType.Statement;
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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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/// 使用赋值产生式的事件
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/// </summary>
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public event EventHandler<AssignGeneratorEventArgs>? OnAssignGenerator;
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/// <summary>
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/// 使用If产生式的事件
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/// </summary>
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public event EventHandler<IfGeneratorEventArgs>? OnIfGenerator;
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/// <summary>
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/// 使用For产生式的事件
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/// </summary>
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public event EventHandler<ForGeneratorEventArgs>? OnForGenerator;
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public static Statement Create(List<SyntaxNodeBase> children)
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{
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return new Statement { 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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OnAssignGenerator?.Invoke(this,
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new AssignGeneratorEventArgs
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{
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Variable = Children[0].Convert<Variable>(), Expression = Children[2].Convert<Expression>()
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});
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}
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else if (Children.Count == 5)
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{
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OnIfGenerator?.Invoke(this,
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new IfGeneratorEventArgs
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{
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Condition = Children[1].Convert<Expression>(),
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Sentence = Children[3].Convert<Statement>(),
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ElseSentence = Children[4].Convert<ElsePart>()
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});
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}
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else if (Children.Count == 8)
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{
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OnForGenerator?.Invoke(this,
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new ForGeneratorEventArgs
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{
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Iterator = Children[1].Convert<TerminatedSyntaxNode>().Token.Convert<IdentifierSemanticToken>(),
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Begin = Children[3].Convert<Expression>(),
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End = Children[5].Convert<Expression>(),
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Sentence = Children[7].Convert<Statement>()
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});
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}
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}
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}
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