| public ImportMethod ( MethodDefinition definition ) : IMemberReference | ||
| definition | MethodDefinition | |
| Результат | IMemberReference | |
public void AddStringReference()
{
const string testConstant = "Lorem ipsum.";
// set up temp assembly.
var assembly = Utilities.CreateTempNetAssembly();
var tableStream = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>();
var methodTable = tableStream.GetTable<MethodDefinition>();
var importer = new ReferenceImporter(tableStream);
// write code.
var body = methodTable[0].MethodBody;
body.Instructions.Clear();
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Ldstr, testConstant));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Call,
importer.ImportMethod(typeof(Console).GetMethod("WriteLine", new Type[]
{
typeof(string)
}))));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Call,
importer.ImportMethod(typeof(Console).GetMethod("ReadKey", Type.EmptyTypes))));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Pop));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Ret));
// build and validate.
assembly = Utilities.RebuildNetAssembly(assembly);
methodTable = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>().GetTable<MethodDefinition>();
var operand = methodTable[0].MethodBody.Instructions[0].Operand;
Assert.IsInstanceOfType(operand, typeof(string));
Assert.AreEqual(testConstant, operand);
}
public void CreateAttributeWithEnumArgument()
{
// set up temp assembly.
var assembly = Utilities.CreateTempNetAssembly();
var tableStream = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>();
var assemblyTable = tableStream.GetTable<AssemblyDefinition>();
var attributeTable = tableStream.GetTable<CustomAttribute>();
var importer = new ReferenceImporter(tableStream);
var assemblyDef = assemblyTable[0];
// create custom attribute.
var signature = new CustomAttributeSignature();
signature.FixedArguments.Add(
new CustomAttributeArgument(importer.ImportTypeSignature(typeof(DebuggableAttribute.DebuggingModes)),
new ElementSignature((int)DebuggableAttribute.DebuggingModes.Default)));
var attribute = new CustomAttribute(importer.ImportMethod(typeof(DebuggableAttribute).GetConstructor(new Type[]
{
typeof(DebuggableAttribute.DebuggingModes)
})), signature);
assemblyDef.CustomAttributes.Add(attribute);
attributeTable.Add(attribute);
// build and validate.
assembly = Utilities.RebuildNetAssembly(assembly);
tableStream = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>();
assemblyTable = tableStream.GetTable<AssemblyDefinition>();
assemblyDef = assemblyTable[0];
attributeTable = tableStream.GetTable<CustomAttribute>();
var newAttribute = attributeTable[0];
Assert.IsTrue(assemblyDef.CustomAttributes.Contains(newAttribute));
Assert.AreEqual(attribute.Constructor.FullName, newAttribute.Constructor.FullName);
Assert.AreEqual(attribute.Signature.FixedArguments.Count, newAttribute.Signature.FixedArguments.Count);
for (int i = 0; i < attribute.Signature.FixedArguments.Count; i++)
Utilities.ValidateArgument(attribute.Signature.FixedArguments[i], newAttribute.Signature.FixedArguments[i]);
}
public void CreateAttributeWithNamedArgument()
{
const string fieldName = "MyField";
const string argumentValue = "MyXmlAttribute";
const string propertyName = "IsNullable";
const bool propertyValue = true;
// set up temp assembly.
var assembly = Utilities.CreateTempNetAssembly();
var typeSystem = assembly.NetDirectory.MetadataHeader.TypeSystem;
var tableStream = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>();
var fieldTable = tableStream.GetTable<FieldDefinition>();
var attributeTable = tableStream.GetTable<CustomAttribute>();
var importer = new ReferenceImporter(tableStream);
// create temp field.
var field = new FieldDefinition(fieldName, FieldAttributes.Static, new FieldSignature(typeSystem.String));
fieldTable.Add(field);
// create custom attribute.
var signature = new CustomAttributeSignature();
signature.FixedArguments.Add(
new CustomAttributeArgument(typeSystem.String,
new ElementSignature(argumentValue)));
signature.NamedArguments.Add(
new CustomAttributeNamedArgument()
{
ArgumentMemberType = CustomAttributeArgumentMemberType.Property,
ArgumentType = typeSystem.Boolean,
MemberName = propertyName,
Argument = new CustomAttributeArgument(typeSystem.Boolean, new ElementSignature(propertyValue))
});
var attribute = new CustomAttribute(importer.ImportMethod(typeof(XmlAttributeAttribute).GetConstructor(new Type[]
{
typeof(string)
})), signature);
field.CustomAttributes.Add(attribute);
attributeTable.Add(attribute);
// build and validate.
assembly = Utilities.RebuildNetAssembly(assembly);
fieldTable = tableStream.GetTable<FieldDefinition>();
field = fieldTable.First(x => x.Name == fieldName);
attributeTable = tableStream.GetTable<CustomAttribute>();
var newAttribute = attributeTable[0];
Assert.IsTrue(field.CustomAttributes.Contains(newAttribute));
Assert.AreEqual(attribute.Constructor.FullName, newAttribute.Constructor.FullName);
Assert.AreEqual(attribute.Signature.FixedArguments.Count, newAttribute.Signature.FixedArguments.Count);
for (int i = 0; i < attribute.Signature.FixedArguments.Count; i++)
{
Utilities.ValidateArgument(attribute.Signature.FixedArguments[i],
newAttribute.Signature.FixedArguments[i]);
}
Assert.AreEqual(attribute.Signature.NamedArguments.Count, newAttribute.Signature.NamedArguments.Count);
for (int i = 0; i < attribute.Signature.NamedArguments.Count; i++)
{
Utilities.ValidateNamedArgument(attribute.Signature.NamedArguments[i],
newAttribute.Signature.NamedArguments[i]);
}
}
public void CreateSimpleAttribute()
{
// set up temp assembly.
var assembly = Utilities.CreateTempNetAssembly();
var typeSystem = assembly.NetDirectory.MetadataHeader.TypeSystem;
var tableStream = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>();
var fieldTable = tableStream.GetTable<FieldDefinition>();
var attributeTable = tableStream.GetTable<CustomAttribute>();
var importer = new ReferenceImporter(tableStream);
// create field.
var field = new FieldDefinition("MyField", FieldAttributes.Public | FieldAttributes.Static,
new FieldSignature(typeSystem.String));
fieldTable.Add(field);
// create custom attribute.
var signature = new CustomAttributeSignature();
signature.FixedArguments.Add(new CustomAttributeArgument(typeSystem.String, new ElementSignature("Lorem ipsum dolor sit amet.")));
signature.FixedArguments.Add(new CustomAttributeArgument(typeSystem.Boolean, new ElementSignature(true)));
var attribute = new CustomAttribute(importer.ImportMethod(typeof(ObsoleteAttribute).GetConstructor(new Type[]
{
typeof(string),
typeof(bool)
})), signature);
field.CustomAttributes.Add(attribute);
attributeTable.Add(attribute);
// build and validate.
assembly = Utilities.RebuildNetAssembly(assembly);
tableStream = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>();
fieldTable = tableStream.GetTable<FieldDefinition>();
field = fieldTable[0];
attributeTable = tableStream.GetTable<CustomAttribute>();
var newAttribute = attributeTable[0];
Assert.IsTrue(field.CustomAttributes.Contains(newAttribute));
Assert.AreEqual(attribute.Constructor.FullName, newAttribute.Constructor.FullName);
Assert.AreEqual(attribute.Signature.FixedArguments.Count, newAttribute.Signature.FixedArguments.Count);
for (int i = 0; i < attribute.Signature.FixedArguments.Count; i++)
Assert.AreEqual(attribute.Signature.FixedArguments[i].Elements[0].Value,
newAttribute.Signature.FixedArguments[i].Elements[0].Value);
}
public void ImportUsingReflection()
{
// set up temp assembly.
var assembly = Utilities.CreateTempNetAssembly();
var tableStream = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>();
var methodTable = tableStream.GetTable<MethodDefinition>();
var importer = new ReferenceImporter(tableStream);
// import members.
var originalWriteLine = typeof(Console).GetMethod("WriteLine", new Type[]
{
typeof(int)
});
var newWriteLine = importer.ImportMethod(originalWriteLine);
Utilities.ValidateMethod(originalWriteLine, newWriteLine);
var originalReadKey = typeof(Console).GetMethod("ReadKey", Type.EmptyTypes);
var newReadKey = importer.ImportMethod(originalReadKey);
Utilities.ValidateMethod(originalReadKey, newReadKey);
// write code.
var body = methodTable[0].MethodBody;
body.Instructions.Clear();
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Ldc_I4, 1337));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Call, newWriteLine));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Call, newReadKey));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Pop));
body.Instructions.Add(MsilInstruction.Create(MsilOpCodes.Ret));
// build and validate.
assembly = Utilities.RebuildNetAssembly(assembly);
methodTable = assembly.NetDirectory.MetadataHeader.GetStream<TableStream>().GetTable<MethodDefinition>();
var writeLineReference = methodTable[methodTable.Count - 1].MethodBody.Instructions[1].Operand;
Assert.IsInstanceOfType(writeLineReference, typeof(MemberReference));
Utilities.ValidateMethod(originalWriteLine, (MemberReference)writeLineReference);
var readKeyReference = methodTable[methodTable.Count - 1].MethodBody.Instructions[2].Operand;
Assert.IsInstanceOfType(readKeyReference, typeof(MemberReference));
Utilities.ValidateMethod(originalReadKey, (MemberReference)readKeyReference);
}