Upsilon/Ycicle/Program.cs

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C#
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Text;
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using Upsilon;
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using Upsilon.Evaluator;
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using Upsilon.StandardLibraries;
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namespace Ycicle
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{
internal static class Program
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{
private static void Main()
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{
Console.WriteLine("Upsilon REPL");
Script script = null;
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var (evaluationScope, boundScope) = StandardLibrary.Create();
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while (true)
{
Console.Write("» ");
var input = Console.ReadLine();
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if (input == "exit") return;
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script = script == null
? new Script(input, boundScope, evaluationScope)
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: Script.ContinueWith(script, input);
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if (script.Diagnostics.Messages.Count > 0)
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{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Errors were found during parsing");
foreach (var diagnosticsMessage in script.Diagnostics.Messages)
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{
LogError(diagnosticsMessage);
}
Console.ResetColor();
continue;
}
//Console.WriteLine(script.PrettyPrintSyntaxTree());
var evaluate = script.Evaluate();
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if (script.Diagnostics.Messages.Count > 0)
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{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Errors were found during evaluating");
foreach (var diagnosticsMessage in script.Diagnostics.Messages)
{
LogError(diagnosticsMessage);
}
Console.ResetColor();
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}
else
{
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if (evaluate == null)
continue;
Console.ForegroundColor = ConsoleColor.Cyan;
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Console.WriteLine(ParseEvaluated(evaluate));
Console.ResetColor();
}
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}
}
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private static void LogError(DiagnosticsMessage message)
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{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(message.Message);
Console.ForegroundColor = ConsoleColor.Gray;
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Console.Write(message.GetDiagnosticPosition() + " ");
Console.Write(message.LineBeforeError());
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Console.ForegroundColor = ConsoleColor.Red;
Console.Write(message.AtError());
Console.ForegroundColor = ConsoleColor.Gray;
Console.Write(message.LineAfterError());
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Console.WriteLine();
}
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private static string ParseEvaluated(object o, int jumps = 0)
{
var sb = new StringBuilder();
if (o is Dictionary<string, object> dic)
{
for (var i = 0; i < jumps; i++) sb.Append(" ");
sb.Append("{\n");
foreach (var (key, value) in dic)
{
for (var i = 0; i < jumps; i++) sb.Append(" ");
sb.Append(" {");
sb.Append("\"");
sb.Append(key);
sb.Append("\": ");
sb.Append(ParseEvaluated(value, jumps + 1));
sb.Append(" }");
sb.Append(",\n");
}
for (var i = 0; i < jumps; i++) sb.Append(" ");
sb.Append("}\n");
}
else
{
sb.Append(o.ToString());
}
return sb.ToString();
}
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}
}