78 lines
2.0 KiB
C#
78 lines
2.0 KiB
C#
using System.Collections;
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using System.Reflection;
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using System.Text;
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namespace Parser;
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public record ASTNode
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{
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public string Accept(IAccepter compiler)
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{
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return ((string)compiler.GetType()
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.GetMethod("Visit", BindingFlags.Public | BindingFlags.Instance, new[] { this.GetType() })!
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.Invoke(compiler, new[] { this })!)!;
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}
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public static string PrintNode(ASTNode node)
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{
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// print type name and string representation of all its fields
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var type = node.GetType();
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var fields = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
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var sb = new StringBuilder();
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sb.Append(type.Name);
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sb.Append("(");
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int i = 0;
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foreach (var field in fields)
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{
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if (i++ > 0) sb.Append(",");
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var value = field.GetValue(node);
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if (value is ASTNode valueNode)
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{
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sb.Append(PrintNode(valueNode));
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}
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else
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{
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sb.Append(value);
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}
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// if field is list - print all its elements
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if (field.PropertyType.IsGenericType && field.PropertyType.GetGenericTypeDefinition() == typeof(List<>))
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{
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var list = (IList)field.GetValue(node);
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sb.Append("[");
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int j = 0;
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sb.AppendLine();
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foreach (var item in list)
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{
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if (j++ > 0)
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{
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sb.Append(",");
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sb.AppendLine();
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}
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if (item is ASTNode itemNode)
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{
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sb.Append(PrintNode(itemNode));
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}
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else
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{
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sb.Append(item);
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}
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}
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sb.Append("]");
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}
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}
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sb.Append(")");
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return sb.ToString();
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}
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}
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public interface IAccepter
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{
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} |