public ScriptResult Execute(
string code,
string[] scriptArgs,
AssemblyReferences references,
IEnumerable<string> namespaces,
ScriptPackSession scriptPackSession)
{
Guard.AgainstNullArgument("references", references);
Guard.AgainstNullArgument("scriptPackSession", scriptPackSession);
references = references.Union(scriptPackSession.References);
SessionState<Evaluator> sessionState;
var isFirstExecution = !scriptPackSession.State.ContainsKey(SessionKey);
if (isFirstExecution)
{
code = code.DefineTrace();
_log.Debug("Creating session");
var context = new CompilerContext(
new CompilerSettings { AssemblyReferences = references.Paths.ToList() },
new ConsoleReportPrinter());
var evaluator = new Evaluator(context);
var allNamespaces = namespaces.Union(scriptPackSession.Namespaces).Distinct();
var host = _scriptHostFactory.CreateScriptHost(
new ScriptPackManager(scriptPackSession.Contexts), scriptArgs);
MonoHost.SetHost((ScriptHost)host);
ScriptLibraryWrapper.SetHost(host);
evaluator.ReferenceAssembly(typeof(MonoHost).Assembly);
evaluator.InteractiveBaseClass = typeof(MonoHost);
sessionState = new SessionState<Evaluator>
{
References = references,
Namespaces = new HashSet<string>(),
Session = evaluator,
};
ImportNamespaces(allNamespaces, sessionState);
scriptPackSession.State[SessionKey] = sessionState;
}
else
{
_log.Debug("Reusing existing session");
sessionState = (SessionState<Evaluator>)scriptPackSession.State[SessionKey];
var newReferences = sessionState.References == null
? references
: references.Except(sessionState.References);
foreach (var reference in newReferences.Paths)
{
_log.DebugFormat("Adding reference to {0}", reference);
sessionState.Session.LoadAssembly(reference);
}
sessionState.References = references;
var newNamespaces = sessionState.Namespaces == null
? namespaces
: namespaces.Except(sessionState.Namespaces);
ImportNamespaces(newNamespaces, sessionState);
}
_log.Debug("Starting execution");
var result = Execute(code, sessionState.Session);
_log.Debug("Finished execution");
return result;
}
public ScriptResult Execute(
string code,
string[] scriptArgs,
AssemblyReferences references,
IEnumerable<string> namespaces,
ScriptPackSession scriptPackSession)
{
Guard.AgainstNullArgument("scriptPackSession", scriptPackSession);
Guard.AgainstNullArgument("references", references);
_log.Debug("Starting to create execution components");
_log.Debug("Creating script host");
var executionReferences = references.Union(scriptPackSession.References);
SessionState<Session> sessionState;
var isFirstExecution = !scriptPackSession.State.ContainsKey(SessionKey);
if (isFirstExecution)
{
code = code.DefineTrace();
var host = _scriptHostFactory.CreateScriptHost(
new ScriptPackManager(scriptPackSession.Contexts), scriptArgs);
ScriptLibraryWrapper.SetHost(host);
_log.Debug("Creating session");
var hostType = host.GetType();
ScriptEngine.AddReference(hostType.Assembly);
var session = ScriptEngine.CreateSession(host, hostType);
var allNamespaces = namespaces.Union(scriptPackSession.Namespaces).Distinct();
foreach (var reference in executionReferences.Paths)
{
_log.DebugFormat("Adding reference to {0}", reference);
session.AddReference(reference);
}
foreach (var assembly in executionReferences.Assemblies)
{
_log.DebugFormat("Adding reference to {0}", assembly.FullName);
session.AddReference(assembly);
}
foreach (var @namespace in allNamespaces)
{
_log.DebugFormat("Importing namespace {0}", @namespace);
session.ImportNamespace(@namespace);
}
sessionState = new SessionState<Session>
{
References = executionReferences,
Session = session,
Namespaces = new HashSet<string>(allNamespaces)
};
scriptPackSession.State[SessionKey] = sessionState;
}
else
{
_log.Debug("Reusing existing session");
sessionState = (SessionState<Session>)scriptPackSession.State[SessionKey];
if (sessionState.References == null)
{
sessionState.References = new AssemblyReferences();
}
if (sessionState.Namespaces == null)
{
sessionState.Namespaces = new HashSet<string>();
}
var newReferences = executionReferences.Except(sessionState.References);
foreach (var reference in newReferences.Paths)
{
_log.DebugFormat("Adding reference to {0}", reference);
sessionState.Session.AddReference(reference);
sessionState.References = sessionState.References.Union(new[] { reference });
}
foreach (var assembly in newReferences.Assemblies)
{
_log.DebugFormat("Adding reference to {0}", assembly.FullName);
sessionState.Session.AddReference(assembly);
sessionState.References = sessionState.References.Union(new[] { assembly });
}
var newNamespaces = namespaces.Except(sessionState.Namespaces);
foreach (var @namespace in newNamespaces)
{
_log.DebugFormat("Importing namespace {0}", @namespace);
sessionState.Session.ImportNamespace(@namespace);
sessionState.Namespaces.Add(@namespace);
}
}
_log.Debug("Starting execution");
var result = Execute(code, sessionState.Session);
if (result.InvalidNamespaces.Any())
{
var pendingNamespacesField = sessionState.Session.GetType().GetField(
"pendingNamespaces",
System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
if (pendingNamespacesField != null)
{
var pendingNamespacesValue = (ReadOnlyArray<string>)pendingNamespacesField
.GetValue(sessionState.Session);
//no need to check this for null as ReadOnlyArray is a value type
if (pendingNamespacesValue.Any())
{
var fixedNamespaces = pendingNamespacesValue.ToList();
foreach (var @namespace in result.InvalidNamespaces)
{
sessionState.Namespaces.Remove(@namespace);
fixedNamespaces.Remove(@namespace);
}
pendingNamespacesField.SetValue(
sessionState.Session, ReadOnlyArray<string>.CreateFrom(fixedNamespaces));
}
}
}
_log.Debug("Finished execution");
return result;
}
public ScriptResult Execute(string code, string[] scriptArgs, AssemblyReferences references, IEnumerable<string> namespaces, ScriptPackSession scriptPackSession)
{
if (scriptPackSession == null)
{
throw new ArgumentNullException("scriptPackSession");
}
if (references == null)
{
throw new ArgumentNullException("references");
}
_log.Debug("Starting to create execution components");
_log.Debug("Creating script host");
var executionReferences = new AssemblyReferences(references.Assemblies, references.Paths);
executionReferences.Union(scriptPackSession.References);
ScriptResult scriptResult;
SessionState<ScriptState> sessionState;
var isFirstExecution = !scriptPackSession.State.ContainsKey(SessionKey);
if (isFirstExecution)
{
var host = _scriptHostFactory.CreateScriptHost(
new ScriptPackManager(scriptPackSession.Contexts), scriptArgs);
ScriptLibraryWrapper.SetHost(host);
_log.Debug("Creating session");
var hostType = host.GetType();
ScriptOptions = ScriptOptions.AddReferences(hostType.Assembly);
var allNamespaces = namespaces.Union(scriptPackSession.Namespaces).Distinct();
foreach (var reference in executionReferences.Paths)
{
_log.DebugFormat("Adding reference to {0}", reference);
ScriptOptions = ScriptOptions.AddReferences(reference);
}
foreach (var assembly in executionReferences.Assemblies)
{
_log.DebugFormat("Adding reference to {0}", assembly.FullName);
ScriptOptions = ScriptOptions.AddReferences(assembly);
}
foreach (var @namespace in allNamespaces)
{
_log.DebugFormat("Importing namespace {0}", @namespace);
ScriptOptions = ScriptOptions.AddNamespaces(@namespace);
}
sessionState = new SessionState<ScriptState> { References = executionReferences, Namespaces = new HashSet<string>(allNamespaces) };
scriptPackSession.State[SessionKey] = sessionState;
scriptResult = Execute(code, host, sessionState);
}
else
{
_log.Debug("Reusing existing session");
sessionState = (SessionState<ScriptState>)scriptPackSession.State[SessionKey];
if (sessionState.References == null)
{
sessionState.References = new AssemblyReferences();
}
if (sessionState.Namespaces == null)
{
sessionState.Namespaces = new HashSet<string>();
}
var newReferences = executionReferences.Except(sessionState.References);
foreach (var reference in newReferences.Paths)
{
_log.DebugFormat("Adding reference to {0}", reference);
ScriptOptions = ScriptOptions.AddReferences(reference);
sessionState.References = sessionState.References.Union(new[] { reference });
}
foreach (var assembly in newReferences.Assemblies)
{
_log.DebugFormat("Adding reference to {0}", assembly.FullName);
ScriptOptions = ScriptOptions.AddReferences(assembly);
sessionState.References = sessionState.References.Union(new[] { assembly });
}
var newNamespaces = namespaces.Except(sessionState.Namespaces);
foreach (var @namespace in newNamespaces)
{
_log.DebugFormat("Importing namespace {0}", @namespace);
ScriptOptions = ScriptOptions.AddNamespaces(@namespace);
sessionState.Namespaces.Add(@namespace);
}
if (string.IsNullOrWhiteSpace(code))
{
return ScriptResult.Empty;
}
scriptResult = Execute(code, sessionState.Session, sessionState);
}
return scriptResult;
//todo handle namespace failures
//https://github.com/dotnet/roslyn/issues/1012
}
public ScriptResult Execute(string code, string[] scriptArgs, AssemblyReferences references,
IEnumerable<string> namespaces,
ScriptPackSession scriptPackSession)
{
if (scriptPackSession == null)
{
throw new ArgumentNullException("scriptPackSession");
}
if (references == null)
{
throw new ArgumentNullException("references");
}
var executionReferences = new AssemblyReferences(references.Assemblies, references.Paths);
executionReferences.Union(scriptPackSession.References);
var allNamespaces = namespaces.Union(scriptPackSession.Namespaces).Distinct();
var host = _scriptHostFactory.CreateScriptHost(new ScriptPackManager(scriptPackSession.Contexts), scriptArgs) as ScriptHost;
var runtimeSetup = new ScriptRuntimeSetup();
runtimeSetup.LanguageSetups.Add(Python.CreateLanguageSetup(null));
var runtime = new ScriptRuntime(runtimeSetup);
var python = Python.GetEngine(runtime);
python.Runtime.LoadAssembly(typeof(IScriptHost).Assembly);
python.Runtime.LoadAssembly(typeof(object).Assembly);
python.Runtime.LoadAssembly(typeof(ExpandoObject).Assembly);
var currentAssemblies = AppDomain.CurrentDomain.GetAssemblies().Where(x => !x.IsDynamic);
foreach (var reference in executionReferences.Paths)
{
var loadedAssembly =
currentAssemblies.FirstOrDefault(
x => String.Equals(x.Location, reference, StringComparison.InvariantCultureIgnoreCase));
if (loadedAssembly != null)
{
python.Runtime.LoadAssembly(loadedAssembly);
}
else
{
try
{
var assembly = reference.ToLowerInvariant().EndsWith("dll") ? Assembly.LoadFrom(reference) : Assembly.LoadWithPartialName(reference);
if (assembly != null)
{
python.Runtime.LoadAssembly(assembly);
}
}
catch (Exception e)
{
_logger.Warn("Invalid path reference: " + reference);
}
}
}
foreach (var assembly in executionReferences.Assemblies)
{
python.Runtime.LoadAssembly(assembly);
}
foreach (var @namespace in allNamespaces)
{
code = "from " + @namespace + " import *" + Environment.NewLine + code;
}
var scope = python.CreateScope();
scope.SetVariable("scriptcs", host);
try
{
var result = python.Execute(code, scope);
return new ScriptResult(result);
}
catch (NotSupportedException e)
{
return new ScriptResult(compilationException: e);
}
catch (Exception e)
{
return new ScriptResult(executionException: e);
}
}
