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;
}