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Repl.cs
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146 lines (116 loc) · 4.74 KB
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using System;
using System.IO;
using System.Runtime.ExceptionServices;
using System.Text.RegularExpressions;
using Common.Logging;
using ScriptCs.Contracts;
namespace ScriptCs
{
public class Repl : ScriptExecutor
{
private readonly string[] _scriptArgs;
private readonly IObjectSerializer _serializer;
public Repl(
string[] scriptArgs,
IFileSystem fileSystem,
IScriptEngine scriptEngine,
IObjectSerializer serializer,
ILog logger,
IConsole console,
IFilePreProcessor filePreProcessor) : base(fileSystem, filePreProcessor, scriptEngine, logger)
{
_scriptArgs = scriptArgs;
_serializer = serializer;
Console = console;
}
public string Buffer { get; set; }
public IConsole Console { get; private set; }
public override void Terminate()
{
base.Terminate();
Logger.Debug("Exiting console");
Console.Exit();
}
public override ScriptResult Execute(string script, params string[] scriptArgs)
{
Guard.AgainstNullArgument("script", script);
try
{
if (script.StartsWith("#clear", StringComparison.OrdinalIgnoreCase))
{
Console.Clear();
return new ScriptResult();
}
if (script.StartsWith("#reset"))
{
Reset();
return new ScriptResult();
}
if (script.StartsWith(":cd", StringComparison.OrdinalIgnoreCase))
{
var m = Regex.Match(script, @":cd\s+(.*)");
var relativePath = m.Groups[1].Value;
FileSystem.CurrentDirectory = Path.Combine(FileSystem.CurrentDirectory, relativePath);
return new ScriptResult();
}
if (script.StartsWith(":cwd", StringComparison.OrdinalIgnoreCase))
{
var dir = FileSystem.CurrentDirectory;
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine(dir);
return new ScriptResult();
}
var preProcessResult = FilePreProcessor.ProcessScript(script);
ImportNamespaces(preProcessResult.Namespaces.ToArray());
foreach (var reference in preProcessResult.References)
{
var referencePath = FileSystem.GetFullPath(Path.Combine(Constants.BinFolder, reference));
AddReferences(FileSystem.FileExists(referencePath) ? referencePath : reference);
}
Console.ForegroundColor = ConsoleColor.Cyan;
Buffer += preProcessResult.Code;
var result = ScriptEngine.Execute(Buffer, _scriptArgs, References, DefaultNamespaces, ScriptPackSession);
if (result == null) return new ScriptResult();
if (result.CompileExceptionInfo != null)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(result.CompileExceptionInfo.SourceException.Message);
}
if (result.ExecuteExceptionInfo != null)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(result.ExecuteExceptionInfo.SourceException.Message);
}
if (result.IsPendingClosingChar)
{
return result;
}
if (result.ReturnValue != null)
{
Console.ForegroundColor = ConsoleColor.Yellow;
var serializedResult = _serializer.Serialize(result.ReturnValue);
Console.WriteLine(serializedResult);
}
Buffer = null;
return result;
}
catch (FileNotFoundException fileEx)
{
RemoveReferences(fileEx.FileName);
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("\r\n" + fileEx + "\r\n");
return new ScriptResult { CompileExceptionInfo = ExceptionDispatchInfo.Capture(fileEx) };
}
catch (Exception ex)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("\r\n" + ex + "\r\n");
return new ScriptResult { ExecuteExceptionInfo = ExceptionDispatchInfo.Capture(ex) };
}
finally
{
Console.ResetColor();
}
}
}
}