61 lines
1.8 KiB
C#
61 lines
1.8 KiB
C#
using System;
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using Parser;
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namespace Repl
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{
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public class MRepl
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{
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public void Run()
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{
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while (true)
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{
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Console.Write("> ");
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var line = Console.ReadLine();
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var window = new TextWindowWithNull(line);
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var parser = new MParser(window);
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var tree = parser.Parse();
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TreeRenderer.RenderTree(tree);
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}
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}
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}
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public class TreeRenderer
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{
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private static void RenderToken(SyntaxToken token, string indent, bool isLast)
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{
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Console.Write(indent + (isLast ? "└── " : "├── "));
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Console.Write($"<{token.Kind}>");
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Console.Write($" {token.Text}");
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Console.WriteLine();
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}
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private static void RenderNode(SyntaxNode node, string indent, bool isLast)
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{
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Console.Write(indent);
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Console.Write(isLast ? "└── " : "├── ");
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Console.Write($"<{node.Kind}>");
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Console.WriteLine();
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var children = node.GetChildNodesAndTokens();
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var last = children.Count - 1;
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indent += isLast ? " " : "│ ";
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for (var index = 0; index <= last; index++)
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{
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var child = children[index];
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if (child.IsNode)
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{
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RenderNode(child.AsNode(), indent, index == last);
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}
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else if (child.IsToken)
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{
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RenderToken(child.AsToken(), indent, index == last);
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}
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}
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}
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public static void RenderTree(SyntaxTree tree)
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{
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RenderNode(tree.Root, "", true);
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}
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}
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}
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