private void RunInteractiveLoop(ScriptOptions options, string initialScriptCodeOpt, CancellationToken cancellationToken)
{
var globals = new InteractiveScriptGlobals(_console.Out, _objectFormatter);
globals.Args.AddRange(_compiler.Arguments.ScriptArguments);
ScriptState<object> state = null;
if (initialScriptCodeOpt != null)
{
var script = Script.CreateInitialScript<object>(_scriptCompiler, initialScriptCodeOpt, options, globals.GetType(), assemblyLoaderOpt: null);
Compilation compilation;
TryBuildAndRun(script, globals, ref state, out compilation, cancellationToken);
}
while (true)
{
_console.Out.Write("> ");
var input = new StringBuilder();
string line;
bool cancelSubmission = false;
while (true)
{
line = _console.In.ReadLine();
if (line == null)
{
if (input.Length == 0)
{
return;
}
cancelSubmission = true;
break;
}
input.AppendLine(line);
var tree = _scriptCompiler.ParseSubmission(SourceText.From(input.ToString()), cancellationToken);
if (_scriptCompiler.IsCompleteSubmission(tree))
{
break;
}
_console.Out.Write(". ");
}
if (cancelSubmission)
{
continue;
}
string code = input.ToString();
if (IsHelpCommand(code))
{
DisplayHelpText();
continue;
}
Script<object> newScript;
if (state == null)
{
newScript = Script.CreateInitialScript<object>(_scriptCompiler, code, options, globals.GetType(), assemblyLoaderOpt: null);
}
else
{
newScript = state.Script.ContinueWith(code, options);
}
Compilation newCompilation;
if (!TryBuildAndRun(newScript, globals, ref state, out newCompilation, cancellationToken))
{
continue;
}
bool hasValue;
ITypeSymbol resultType = newCompilation.GetSubmissionResultType(out hasValue);
if (hasValue)
{
if (resultType != null && resultType.SpecialType == SpecialType.System_Void)
{
_console.Out.WriteLine(_objectFormatter.VoidDisplayString);
}
else
{
globals.Print(state.ReturnValue);
}
}
}
}
private static ScriptOptions UpdateOptions(ScriptOptions options, InteractiveScriptGlobals globals)
{
var currentMetadataResolver = (RuntimeMetadataReferenceResolver)options.MetadataResolver;
var currentSourceResolver = (CommonCompiler.LoggingSourceFileResolver)options.SourceResolver;
string newWorkingDirectory = Directory.GetCurrentDirectory();
var newReferenceSearchPaths = ImmutableArray.CreateRange(globals.ReferencePaths);
var newSourceSearchPaths = ImmutableArray.CreateRange(globals.SourcePaths);
// remove references and imports from the options, they have been applied and will be inherited from now on:
return options.
RemoveImportsAndReferences().
WithMetadataResolver(currentMetadataResolver.
WithRelativePathResolver(
currentMetadataResolver.PathResolver.
WithBaseDirectory(newWorkingDirectory).
WithSearchPaths(newReferenceSearchPaths))).
WithSourceResolver(currentSourceResolver.
WithBaseDirectory(newWorkingDirectory).
WithSearchPaths(newSourceSearchPaths));
}
public void Initialize(Type replServiceProviderType, string cultureName)
{
Debug.Assert(replServiceProviderType != null);
Debug.Assert(cultureName != null);
Debug.Assert(_metadataFileProvider == null);
Debug.Assert(_assemblyLoader == null);
Debug.Assert(_replServiceProvider == null);
// TODO (tomat): we should share the copied files with the host
_metadataFileProvider = new MetadataShadowCopyProvider(
Path.Combine(Path.GetTempPath(), "InteractiveHostShadow"),
noShadowCopyDirectories: s_systemNoShadowCopyDirectories,
documentationCommentsCulture: new CultureInfo(cultureName));
_assemblyLoader = new InteractiveAssemblyLoader(_metadataFileProvider);
_replServiceProvider = (ReplServiceProvider)Activator.CreateInstance(replServiceProviderType);
_globals = new InteractiveScriptGlobals(Console.Out, _replServiceProvider.ObjectFormatter);
}
private bool TryBuildAndRun(Script<object> newScript, InteractiveScriptGlobals globals, ref ScriptState<object> state, ref ScriptOptions options, CancellationToken cancellationToken)
{
var diagnostics = newScript.Compile(cancellationToken);
DisplayDiagnostics(diagnostics);
if (diagnostics.HasAnyErrors())
{
return false;
}
try
{
var task = (state == null) ?
newScript.RunAsync(globals, cancellationToken) :
newScript.ContinueAsync(state, cancellationToken);
state = task.GetAwaiter().GetResult();
}
catch (FileLoadException e) when (e.InnerException is InteractiveAssemblyLoaderException)
{
var oldColor = _console.ForegroundColor;
try
{
_console.ForegroundColor = ConsoleColor.Red;
_console.Out.WriteLine(e.InnerException.Message);
}
finally
{
_console.ForegroundColor = oldColor;
}
return false;
}
catch (Exception e)
{
DisplayException(e);
return false;
}
options = UpdateOptions(options, globals);
return true;
}
private void BuildAndRun(Script<object> newScript, InteractiveScriptGlobals globals, ref ScriptState<object> state, ref ScriptOptions options, bool displayResult, CancellationToken cancellationToken)
{
var diagnostics = newScript.Compile(cancellationToken);
DisplayDiagnostics(diagnostics);
if (diagnostics.HasAnyErrors())
{
return;
}
var task = (state == null) ?
newScript.RunAsync(globals, catchException: e => true, cancellationToken: cancellationToken) :
newScript.RunFromAsync(state, catchException: e => true, cancellationToken: cancellationToken);
state = task.GetAwaiter().GetResult();
if (state.Exception != null)
{
DisplayException(state.Exception);
}
else if (displayResult && newScript.HasReturnValue())
{
globals.Print(state.ReturnValue);
}
options = UpdateOptions(options, globals);
}
private void RunInteractiveLoop(ScriptOptions options, CancellationToken cancellationToken)
{
var globals = new InteractiveScriptGlobals(_console.Out, _objectFormatter);
globals.Args.AddRange(_compiler.Arguments.ScriptArguments);
ScriptState <object> state = null;
while (true)
{
_console.Out.Write("> ");
var input = new StringBuilder();
string line;
bool cancelSubmission = false;
while (true)
{
line = _console.In.ReadLine();
if (line == null)
{
if (input.Length == 0)
{
return;
}
cancelSubmission = true;
break;
}
input.AppendLine(line);
var tree = _scriptCompiler.ParseSubmission(SourceText.From(input.ToString()), cancellationToken);
if (_scriptCompiler.IsCompleteSubmission(tree))
{
break;
}
_console.Out.Write(". ");
}
if (cancelSubmission)
{
continue;
}
string code = input.ToString();
Script<object> newScript;
if (state == null)
{
newScript = Script.CreateInitialScript<object>(_scriptCompiler, code, options, globals.GetType(), assemblyLoaderOpt: null);
}
else
{
newScript = state.Script.ContinueWith(code, options);
}
var newCompilation = newScript.GetCompilation();
try
{
newScript.Build(cancellationToken);
// display warnings:
DisplayDiagnostics(newCompilation.GetDiagnostics(cancellationToken).Where(d => d.Severity == DiagnosticSeverity.Warning));
}
catch (CompilationErrorException e)
{
DisplayDiagnostics(e.Diagnostics.Where(d => d.Severity == DiagnosticSeverity.Error || d.Severity == DiagnosticSeverity.Warning));
continue;
}
try
{
var task = (state == null) ?
newScript.RunAsync(globals, cancellationToken) :
newScript.ContinueAsync(state, cancellationToken);
state = task.GetAwaiter().GetResult();
}
catch (Exception e)
{
DisplayException(e);
continue;
}
bool hasValue;
ITypeSymbol resultType = newCompilation.GetSubmissionResultType(out hasValue);
if (hasValue)
{
if (resultType != null && resultType.SpecialType == SpecialType.System_Void)
{
_console.Out.WriteLine(_objectFormatter.VoidDisplayString);
}
else
{
globals.Print(state.ReturnValue);
}
}
}
}
private void RunInteractiveLoop(ScriptOptions options, string initialScriptCodeOpt, CancellationToken cancellationToken)
{
var globals = new InteractiveScriptGlobals(_console.Out, _objectFormatter);
globals.Args.AddRange(_compiler.Arguments.ScriptArguments);
ScriptState <object> state = null;
if (initialScriptCodeOpt != null)
{
var script = Script.CreateInitialScript <object>(_scriptCompiler, initialScriptCodeOpt, options, globals.GetType(), assemblyLoaderOpt: null);
TryBuildAndRun(script, globals, ref state, ref options, cancellationToken);
}
while (true)
{
_console.Out.Write("> ");
var input = new StringBuilder();
string line;
bool cancelSubmission = false;
while (true)
{
line = _console.In.ReadLine();
if (line == null)
{
if (input.Length == 0)
{
return;
}
cancelSubmission = true;
break;
}
input.AppendLine(line);
var tree = _scriptCompiler.ParseSubmission(SourceText.From(input.ToString()), cancellationToken);
if (_scriptCompiler.IsCompleteSubmission(tree))
{
break;
}
_console.Out.Write(". ");
}
if (cancelSubmission)
{
continue;
}
string code = input.ToString();
if (IsHelpCommand(code))
{
DisplayHelpText();
continue;
}
Script <object> newScript;
if (state == null)
{
newScript = Script.CreateInitialScript <object>(_scriptCompiler, code, options, globals.GetType(), assemblyLoaderOpt: null);
}
else
{
newScript = state.Script.ContinueWith(code, options);
}
if (!TryBuildAndRun(newScript, globals, ref state, ref options, cancellationToken))
{
continue;
}
if (newScript.HasReturnValue())
{
globals.Print(state.ReturnValue);
}
}
}
private void RunInteractiveLoop(ScriptOptions options, CancellationToken cancellationToken)
{
var globals = new InteractiveScriptGlobals(_console.Out, _objectFormatter);
globals.Args.AddRange(_compiler.Arguments.ScriptArguments);
ScriptState <object> state = null;
while (true)
{
_console.Out.Write("> ");
var input = new StringBuilder();
string line;
bool cancelSubmission = false;
while (true)
{
line = _console.In.ReadLine();
if (line == null)
{
if (input.Length == 0)
{
return;
}
cancelSubmission = true;
break;
}
input.AppendLine(line);
var tree = _scriptCompiler.ParseSubmission(SourceText.From(input.ToString()), cancellationToken);
if (_scriptCompiler.IsCompleteSubmission(tree))
{
break;
}
_console.Out.Write(". ");
}
if (cancelSubmission)
{
continue;
}
string code = input.ToString();
Script <object> newScript;
if (state == null)
{
newScript = Script.CreateInitialScript <object>(_scriptCompiler, code, options, globals.GetType(), assemblyLoaderOpt: null);
}
else
{
newScript = state.Script.ContinueWith(code, options);
}
var newCompilation = newScript.GetCompilation();
try
{
newScript.Build(cancellationToken);
// display warnings:
DisplayDiagnostics(newCompilation.GetDiagnostics(cancellationToken).Where(d => d.Severity == DiagnosticSeverity.Warning));
}
catch (CompilationErrorException e)
{
DisplayDiagnostics(e.Diagnostics.Where(d => d.Severity == DiagnosticSeverity.Error || d.Severity == DiagnosticSeverity.Warning));
continue;
}
try
{
var task = (state == null) ?
newScript.RunAsync(globals, cancellationToken) :
newScript.ContinueAsync(state, cancellationToken);
state = task.GetAwaiter().GetResult();
}
catch (Exception e)
{
DisplayException(e);
continue;
}
bool hasValue;
ITypeSymbol resultType = newCompilation.GetSubmissionResultType(out hasValue);
if (hasValue)
{
if (resultType != null && resultType.SpecialType == SpecialType.System_Void)
{
_console.Out.WriteLine(_objectFormatter.VoidDisplayString);
}
else
{
globals.Print(state.ReturnValue);
}
}
}
}