81 lines
2.3 KiB
C#
81 lines
2.3 KiB
C#
using System;
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using System.Linq;
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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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private readonly CompilationContext _context;
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public MRepl()
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{
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_context = CompilationContext.Empty;
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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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var line = Read();
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if (line.StartsWith('#'))
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{
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line = line.Trim();
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if (line == "#q")
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{
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break;
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}
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Console.ForegroundColor = ConsoleColor.DarkRed;
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Console.WriteLine($"Unknown command '{line}'.");
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Console.ResetColor();
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continue;
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}
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var result = Evaluate(line);
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Print(result);
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}
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}
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private void Print(string result)
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{
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Console.ForegroundColor = ConsoleColor.Green;
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Console.WriteLine(result);
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Console.ResetColor();
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}
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private string Read()
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{
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Console.Write("> ");
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return Console.ReadLine();
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}
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private string Evaluate(string submission)
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{
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var tree = SyntaxTree.Parse(submission);
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if (tree.Diagnostics.Any())
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{
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foreach (var diagnostic in tree.Diagnostics.Diagnostics)
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{
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Console.ForegroundColor = ConsoleColor.DarkRed;
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Console.WriteLine($"{diagnostic.Span}: {diagnostic.Message}");
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Console.ResetColor();
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}
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TreeRenderer.RenderTree(tree);
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return string.Empty;
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}
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TreeRenderer.RenderTree(tree);
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var compilation = Compilation.Create(tree);
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var evaluationResult = compilation.Evaluate(_context);
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foreach (var diagnostic in evaluationResult.Diagnostics)
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{
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Console.ForegroundColor = ConsoleColor.DarkRed;
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Console.WriteLine($"{diagnostic.Span}: {diagnostic.Message}");
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Console.ResetColor();
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}
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return evaluationResult.Value?.ToString() ?? string.Empty;
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}
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}
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}
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