public unsafe static void TestCommonTailOptimization()
{
var wr = new Writer.MetadataWriter();
wr.ScopeDefinitions.Add(BuildSimpleTestData());
var ms = new MemoryStream();
wr.Write(ms);
fixed(byte *pBuffer = ms.ToArray())
{
var rd = new Reader.MetadataReader((IntPtr)pBuffer, (int)ms.Length);
Reader.ScopeDefinitionHandle scopeHandle = rd.ScopeDefinitions.Single();
Reader.ScopeDefinition systemRuntimeScope = scopeHandle.GetScopeDefinition(rd);
Reader.NamespaceDefinition rootNamespace = systemRuntimeScope.RootNamespaceDefinition.GetNamespaceDefinition(rd);
Reader.NamespaceDefinition systemNamespace =
rootNamespace.NamespaceDefinitions.Single(
ns => ns.GetNamespaceDefinition(rd).Name.StringEquals("System", rd)
).GetNamespaceDefinition(rd);
// This validates the common tail optimization.
// Since both System.Object and System.String define a default constructor and the
// records are structurally equivalent, there should only be one metadata record
// representing a default .ctor in the blob.
Reader.TypeDefinition objectType = systemNamespace.TypeDefinitions.Single(
t => t.GetTypeDefinition(rd).Name.StringEquals("Object", rd)
).GetTypeDefinition(rd);
Reader.TypeDefinition stringType = systemNamespace.TypeDefinitions.Single(
t => t.GetTypeDefinition(rd).Name.StringEquals("String", rd)
).GetTypeDefinition(rd);
Reader.MethodHandle objectCtor = objectType.Methods.Single();
Reader.MethodHandle stringCtor = stringType.Methods.Single();
Assert.True(objectCtor.Equals(stringCtor));
}
}
public unsafe static void TestSimpleRoundTripping()
{
var wr = new Writer.MetadataWriter();
wr.ScopeDefinitions.Add(BuildSimpleTestData());
var ms = new MemoryStream();
wr.Write(ms);
fixed(byte *pBuffer = ms.ToArray())
{
var rd = new Reader.MetadataReader((IntPtr)pBuffer, (int)ms.Length);
// Validate the System.Runtime scope
Reader.ScopeDefinitionHandle scopeHandle = rd.ScopeDefinitions.Single();
Reader.ScopeDefinition systemRuntimeScope = scopeHandle.GetScopeDefinition(rd);
Assert.Equal(4, systemRuntimeScope.MajorVersion);
Assert.Equal("System.Runtime", systemRuntimeScope.Name.GetConstantStringValue(rd).Value);
// Validate the root namespace and <Module> type
Reader.NamespaceDefinition rootNamespace = systemRuntimeScope.RootNamespaceDefinition.GetNamespaceDefinition(rd);
Assert.Equal(1, rootNamespace.TypeDefinitions.Count());
Reader.TypeDefinition moduleType = rootNamespace.TypeDefinitions.Single().GetTypeDefinition(rd);
Assert.Equal("<Module>", moduleType.Name.GetConstantStringValue(rd).Value);
Assert.Equal(1, rootNamespace.NamespaceDefinitions.Count());
// Validate the System namespace
Reader.NamespaceDefinition systemNamespace = rootNamespace.NamespaceDefinitions.Single().GetNamespaceDefinition(rd);
Assert.Equal(4, systemNamespace.TypeDefinitions.Count());
foreach (var typeHandle in systemNamespace.TypeDefinitions)
{
Reader.TypeDefinition type = typeHandle.GetTypeDefinition(rd);
string typeName = type.Name.GetConstantStringValue(rd).Value;
string baseTypeName = null;
if (!type.BaseType.IsNull(rd))
{
baseTypeName = type.BaseType.ToTypeDefinitionHandle(rd).GetTypeDefinition(rd).Name.GetConstantStringValue(rd).Value;
}
switch (typeName)
{
case "Object":
Assert.Null(baseTypeName);
Assert.Equal(1, type.Methods.Count());
break;
case "Void":
Assert.Equal("ValueType", baseTypeName);
Assert.Equal(0, type.Methods.Count());
break;
case "String":
Assert.Equal("Object", baseTypeName);
Assert.Equal(1, type.Methods.Count());
break;
case "ValueType":
Assert.Equal("Object", baseTypeName);
Assert.Equal(0, type.Methods.Count());
break;
default:
throw new NotImplementedException();
}
}
}
}