5ca947125b
Reviewed-on: PostGuard/Canon#69 Co-authored-by: Lan_G <2911328695@qq.com> Co-committed-by: Lan_G <2911328695@qq.com>
125 lines
3.6 KiB
C#
125 lines
3.6 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 OnAssignGeneratorEventArgs : 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 OnReturnGeneratorEventArgs : EventArgs
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{
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public required IdentifierSemanticToken FunctionName { get; set; }
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public required Expression Expression { get; init; }
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}
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public class OnIfGeneratorEventArgs : 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 OnForGeneratorEventArgs : 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<OnAssignGeneratorEventArgs>? OnAssignGenerator;
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/// <summary>
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/// 使用返回产生式的事件
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/// </summary>
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public event EventHandler<OnReturnGeneratorEventArgs>? OnReturnGenerator;
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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<OnIfGeneratorEventArgs>? 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<OnForGeneratorEventArgs>? 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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if (Children[0].IsTerminated)
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{
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OnReturnGenerator?.Invoke(this, new OnReturnGeneratorEventArgs
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{
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FunctionName = Children[0].Convert<TerminatedSyntaxNode>().Token.Convert<IdentifierSemanticToken>(),
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Expression = Children[2].Convert<Expression>()
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});
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}
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else
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{
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OnAssignGenerator?.Invoke(this, new OnAssignGeneratorEventArgs
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{
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Variable = Children[0].Convert<Variable>(),
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Expression = Children[2].Convert<Expression>()
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});
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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, new OnIfGeneratorEventArgs
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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, new OnForGeneratorEventArgs
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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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