CompiledMethod CompileBlock (Class host, Undo undo, Report Report)
{
#if STATIC
throw new NotSupportedException ();
#else
string current_debug_name = "eval-" + count + ".dll";
++count;
AssemblyDefinitionDynamic assembly;
AssemblyBuilderAccess access;
if (Environment.GetEnvironmentVariable ("SAVE") != null) {
access = AssemblyBuilderAccess.RunAndSave;
assembly = new AssemblyDefinitionDynamic (module, current_debug_name, current_debug_name);
assembly.Importer = importer;
} else {
#if NET_4_0
access = AssemblyBuilderAccess.RunAndCollect;
#else
access = AssemblyBuilderAccess.Run;
#endif
assembly = new AssemblyDefinitionDynamic (module, current_debug_name);
}
assembly.Create (AppDomain.CurrentDomain, access);
Method expression_method;
if (host != null) {
var base_class_imported = importer.ImportType (base_class);
var baseclass_list = new List<FullNamedExpression> (1) {
new TypeExpression (base_class_imported, host.Location)
};
host.SetBaseTypes (baseclass_list);
expression_method = (Method) host.Members[0];
if ((expression_method.ModFlags & Modifiers.ASYNC) != 0) {
//
// Host method is async. When WaitOnTask is set we wrap it with wait
//
// void AsyncWait (ref object $retval) {
// $retval = Host();
// ((Task)$retval).Wait(); // When WaitOnTask is set
// }
//
var p = new ParametersCompiled (
new Parameter (new TypeExpression (module.Compiler.BuiltinTypes.Object, Location.Null), "$retval", Parameter.Modifier.REF, null, Location.Null)
);
var method = new Method(host, new TypeExpression(module.Compiler.BuiltinTypes.Void, Location.Null),
Modifiers.PUBLIC | Modifiers.STATIC, new MemberName("AsyncWait"), p, null);
method.Block = new ToplevelBlock(method.Compiler, p, Location.Null);
method.Block.AddStatement(new StatementExpression (new SimpleAssign(
new SimpleName(p [0].Name, Location.Null),
new Invocation(new SimpleName(expression_method.MemberName.Name, Location.Null), new Arguments(0)),
Location.Null), Location.Null));
if (WaitOnTask) {
var task = new Cast (expression_method.TypeExpression, new SimpleName (p [0].Name, Location.Null), Location.Null);
method.Block.AddStatement (new StatementExpression (new Invocation (
new MemberAccess (task, "Wait", Location.Null),
new Arguments (0)), Location.Null));
}
host.AddMember(method);
expression_method = method;
}
host.CreateContainer();
host.DefineContainer();
host.Define();
} else {
expression_method = null;
}
module.CreateContainer ();
// Disable module and source file re-definition checks
module.EnableRedefinition ();
source_file.EnableRedefinition ();
module.Define ();
if (Report.Errors != 0){
if (undo != null)
undo.ExecuteUndo ();
return null;
}
if (host != null){
host.PrepareEmit ();
host.EmitContainer ();
}
module.EmitContainer ();
if (Report.Errors != 0){
if (undo != null)
undo.ExecuteUndo ();
return null;
}
module.CloseContainer ();
if (host != null)
host.CloseContainer ();
if (access == AssemblyBuilderAccess.RunAndSave)
assembly.Save ();
if (host == null)
return null;
//
// Unlike Mono, .NET requires that the MethodInfo is fetched, it cant
// work from MethodBuilders. Retarded, I know.
//
var tt = assembly.Builder.GetType (host.TypeBuilder.Name);
var mi = tt.GetMethod (expression_method.MemberName.Name);
//
// We need to then go from FieldBuilder to FieldInfo
// or reflection gets confused (it basically gets confused, and variables override each
// other).
//
foreach (var member in host.Members) {
var field = member as Field;
if (field == null)
continue;
var fi = tt.GetField (field.Name);
Tuple<FieldSpec, FieldInfo> old;
// If a previous value was set, nullify it, so that we do
// not leak memory
if (fields.TryGetValue (field.Name, out old)) {
if (old.Item1.MemberType.IsStruct) {
//
// TODO: Clear fields for structs
//
} else {
try {
old.Item2.SetValue (null, null);
} catch {
}
}
}
fields[field.Name] = Tuple.Create (field.Spec, fi);
}
return (CompiledMethod) System.Delegate.CreateDelegate (typeof (CompiledMethod), mi);
#endif
}
public override Assembly LoadAssemblyFile (string fileName, bool isImplicitReference)
{
bool? has_extension = null;
foreach (var path in paths) {
var file = Path.Combine (path, fileName);
if (compiler.Settings.DebugFlags > 0)
Console.WriteLine ("Probing assembly location `{0}'", file);
if (!File.Exists (file)) {
if (!has_extension.HasValue)
has_extension = fileName.EndsWith (".dll", StringComparison.Ordinal) || fileName.EndsWith (".exe", StringComparison.Ordinal);
if (has_extension.Value)
continue;
file += ".dll";
if (!File.Exists (file))
continue;
}
try {
using (RawModule module = domain.OpenRawModule (file)) {
if (!module.IsManifestModule) {
Error_AssemblyIsModule (fileName);
return null;
}
//
// check whether the assembly can be actually imported without
// collision
//
var an = module.GetAssemblyName ();
foreach (var entry in loaded_names) {
var loaded_name = entry.Item1;
if (an.Name != loaded_name.Name)
continue;
if (module.ModuleVersionId == entry.Item3.ManifestModule.ModuleVersionId)
return entry.Item3;
if (((an.Flags | loaded_name.Flags) & AssemblyNameFlags.PublicKey) == 0) {
compiler.Report.SymbolRelatedToPreviousError (entry.Item2);
compiler.Report.SymbolRelatedToPreviousError (fileName);
compiler.Report.Error (1704,
"An assembly with the same name `{0}' has already been imported. Consider removing one of the references or sign the assembly",
an.Name);
return null;
}
if ((an.Flags & AssemblyNameFlags.PublicKey) == (loaded_name.Flags & AssemblyNameFlags.PublicKey) && an.Version.Equals (loaded_name.Version)) {
compiler.Report.SymbolRelatedToPreviousError (entry.Item2);
compiler.Report.SymbolRelatedToPreviousError (fileName);
compiler.Report.Error (1703,
"An assembly with the same identity `{0}' has already been imported. Consider removing one of the references",
an.FullName);
return null;
}
}
if (compiler.Settings.DebugFlags > 0)
Console.WriteLine ("Loading assembly `{0}'", fileName);
var assembly = domain.LoadAssembly (module);
if (assembly != null)
loaded_names.Add (Tuple.Create (an, fileName, assembly));
return assembly;
}
} catch {
if (!isImplicitReference)
Error_FileCorrupted (file);
return null;
}
}
if (!isImplicitReference)
Error_FileNotFound (fileName);
return null;
}