| public DefineConstructor ( System attributes, System callingConvention, System parameterTypes ) : System.Reflection.Emit.ConstructorBuilder | ||
| attributes | System | |
| callingConvention | System | |
| parameterTypes | System | |
| return | System.Reflection.Emit.ConstructorBuilder | |
/// <summary>
/// Adds a new public constructor to the class, with the given parameters.
/// </summary>
/// <param name="parameterTypes">The types of the parameters of the method.</param>
/// <returns>The defined constructor.</returns>
public ConstructorBuilderHelper DefinePublicConstructor(params Type[] parameterTypes)
{
return(new ConstructorBuilderHelper(
this,
_typeBuilder.DefineConstructor(
MethodAttributes.Public, CallingConventions.Standard, parameterTypes)));
}
public ClassBuilder(TypeBuilder tb)
{
this.tb = tb;
System.Type[] param = {};
ConstructorBuilder ctor = tb.DefineConstructor( MethodAttributes.Public, CallingConventions.Standard, param );
cil = ctor.GetILGenerator();
ctor = tb.DefineConstructor(MethodAttributes.Public | MethodAttributes.Static, CallingConventions.Standard, param);
ccil = ctor.GetILGenerator();
}
private static void BuildConstructor(TypeBuilder proxyBuilder, Type proxyType,
FieldBuilder wrappedType, FieldBuilder invokeHandlers, TypeDebugging debug)
{
var arguments = new Type[] { proxyType, typeof(IInvocationHandler[]) };
var constructor = proxyBuilder.DefineConstructor(
MethodAttributes.Public | MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName | MethodAttributes.HideBySig,
CallingConventions.Standard, arguments);
using (var generator = debug.GetMethodDebugging(constructor))
{
// Call the base constructor.
generator.Emit(OpCodes.Ldarg_0);
var objectCtor = proxyType.GetConstructor(Type.EmptyTypes);
generator.Emit(OpCodes.Call, objectCtor);
// Store the target object.
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldarg_1);
generator.Emit(OpCodes.Stfld, wrappedType);
// Store the handlers.
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Ldarg_2);
generator.Emit(OpCodes.Stfld, invokeHandlers);
generator.Emit(OpCodes.Ret);
}
}
protected ConstructorInfo GrabConstructor(ConstructorInfo Original, TypeBuilder On)
{
if(Original == null) return null;
if(ConstructorsDone.ContainsKey(Original))
return ConstructorsDone[Original];
if(!Sources.Contains(Original.Module))
return ConstructorReplaceGenerics(Original);
if(On == null)
On = GrabType(Original.DeclaringType) as TypeBuilder;
ConstructorBuilder Builder = On.DefineConstructor(Original.Attributes,
Original.CallingConvention, ParameterTypes(Original));
Builder.SetImplementationFlags(Original.GetMethodImplementationFlags());
if(ConstructorsDone.ContainsKey(Original))
return ConstructorsDone[Original];
ConstructorsDone.Add(Original, Builder);
CopyMethodBody(Original, Builder);
return Builder;
}
private static void CreateConstructor(TypeBuilder tb, IList<IInjectableConstructorArg> properties)
{
var constructor = tb.DefineConstructor(
MethodAttributes.Public |
MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName,
CallingConventions.Standard,
properties.Select(p => p.PropertyType).ToArray());
var conObj = typeof(object).GetConstructor(new Type[0]);
ILGenerator il = constructor.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, conObj);
il.Emit(OpCodes.Nop);
il.Emit(OpCodes.Nop);
for (var i = 0; i < properties.Count; i++)
{
var property = properties[i];
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg, i + 1);
il.Emit(OpCodes.Call, property.Setter);
il.Emit(OpCodes.Nop);
}
il.Emit(OpCodes.Nop);
il.Emit(OpCodes.Ret);
}
/// <summary>
/// Uses reflection to emit the given <see cref="ConstructorInfo"/> body for the given type.
/// </summary>
/// <param name="typeBuilder">
/// The <see cref="TypeBuilder"/>.
/// </param>
/// <param name="constructorInfo">
/// The <see cref="ConstructorInfo"/>.
/// </param>
public static void Emit(TypeBuilder typeBuilder, ConstructorInfo constructorInfo)
{
// Define the default constructor attributes.
const MethodAttributes ConstructorAttributes = MethodAttributes.Public |
MethodAttributes.HideBySig |
MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName;
// Get the parameters.
Type[] parameterTypes = constructorInfo.GetParameters().Select(p => p.ParameterType).ToArray();
// Define the constructor.
ConstructorBuilder constructor = typeBuilder.DefineConstructor(
ConstructorAttributes,
CallingConventions.Standard,
parameterTypes);
ILGenerator il = constructor.GetILGenerator();
// ReSharper disable once BitwiseOperatorOnEnumWithoutFlags
constructor.SetImplementationFlags(MethodImplAttributes.IL | MethodImplAttributes.Managed);
// Load all constructor arguments. Note argument 0 is 'this' pointer, so you must emit one more.
for (int i = 0; i <= parameterTypes.Length; i++)
{
il.Emit(OpCodes.Ldarg_S, i);
}
// Call the base constructor and return.
il.Emit(OpCodes.Call, constructorInfo);
il.Emit(OpCodes.Ret);
}
public BFMemory(TypeBuilder typeBuilder)
{
PointerFieldBuilder = typeBuilder.DefineField("pointer", typeof(short), FieldAttributes.Static | FieldAttributes.Private);
MemoryFieldBuilder = typeBuilder.DefineField("memory", typeof(byte[]), FieldAttributes.Static | FieldAttributes.Private);
var staticConstructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Static,CallingConventions.Standard, null);
GenerateStaticConstructorBody(staticConstructorBuilder.GetILGenerator());
}
/// <summary>
/// Defines the constructor used.
/// </summary>
/// <param name="owner"></param>
/// <param name="interfaceType"></param>
/// <returns></returns>
protected override ConstructorBuilder DefineConstructor(TypeBuilder owner, Type interfaceType)
{
var probeType = typeof(IMethodCallProbe<>).MakeGenericType(interfaceType);
return owner.DefineConstructor(
MethodAttributes.Public,
CallingConventions.Standard,
new[] { typeof(ILibrary), probeType });
}
public ConstructorBuilder GenerateConstructor(TypeBuilder builder, Type[] parameters)
{
return builder.DefineConstructor(
MethodAttributes.Public |
MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName,
CallingConventions.Standard,
parameters);
}
CodeMethod (CodeClass cls, MethodAttributes attributes, Type[] parameterTypes)
{
this.cls = cls;
this.typeBuilder = cls.TypeBuilder;
this.attributes = attributes;
this.parameterTypes = parameterTypes;
this.name = typeBuilder.Name;
methodBase = typeBuilder.DefineConstructor (attributes, CallingConventions.Standard, parameterTypes);
builder = new CodeBuilder (cls);
}
private static ConstructorInfo BuildConstructor(TypeBuilder type, FieldInfo helperClassFieldInfo)
{
// Declaring method builder
// Method attributes
ConstructorBuilder method = type.DefineConstructor(MethodAttributes.Public, 0, new[] { typeof(IDbConnection) });
// Preparing Reflection instances
ConstructorInfo ctor1 = typeof(DebuggerNonUserCodeAttribute).GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[]{
},
null
);
ConstructorInfo ctor2 = typeof(DataContextBase).GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[]{
typeof(IDbConnection)
},
null
);
ConstructorInfo ctor3 = typeof(SqlDataContextHelperClass).GetConstructor(
BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
null,
new Type[]{
typeof(DataContext)
},
null
);
FieldInfo field4 = helperClassFieldInfo;
// Adding custom attributes to method
// [DebuggerNonUserCodeAttribute]
method.SetCustomAttribute(
new CustomAttributeBuilder(
ctor1,
new Type[] { }
)
);
// Parameter connection
//ParameterBuilder connection = method.DefineParameter(0, ParameterAttributes.None, "connection");
ILGenerator gen = method.GetILGenerator();
// Writing body
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldarg_1);
gen.Emit(OpCodes.Call, ctor2);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Newobj, ctor3);
gen.Emit(OpCodes.Stfld, field4);
gen.Emit(OpCodes.Ret);
// finished
return method;
}
private void Constructor(TypeBuilder typeBuilder)
{
var constructor = typeBuilder.DefineConstructor(MethodAttributes.Public | MethodAttributes.RTSpecialName, CallingConventions.Standard, new[] { typeof(IDynamicImplementation) });
var constructorILGenerator = constructor.GetILGenerator();
constructorILGenerator.Emit(OpCodes.Ldarg_0);
var originalConstructor = typeof(Object).GetConstructor(BindingFlags.Instance | BindingFlags.Public, null, new Type[0], null);
constructorILGenerator.Emit(OpCodes.Call, originalConstructor);
constructorILGenerator.Emit(OpCodes.Ldarg_0);
constructorILGenerator.Emit(OpCodes.Ldarg_1);
constructorILGenerator.Emit(OpCodes.Stfld, __interceptionService);
constructorILGenerator.Emit(OpCodes.Ret);
}
/// <summary>
/// AddConstructor
/// </summary>
/// <param name="typeBuilder"></param>
/// <param name="backingFields"></param>
private static void CreateConstructor(System.Reflection.Emit.TypeBuilder typeBuilder, IReadOnlyList <dynamic> backingFields)
{
#region Constructor
//--------------------------------------------------------------------
// Constructor: (Default)
// <code>
// .custom instance void [Newtonsoft.Json]Newtonsoft.Json.JsonConverterAttribute::.ctor(class [mscorlib]System.Type) = { type(<NameSpace>.PayloadComplexTypeConverter) }
// .method public hidebysig specialname rtspecialname instance void .ctor() cil managed
// {
// }
// </code>
// Attribute:
// [JsonConverter(typeof(PayloadComplexTypeConverter))]
// Ctor attributes
/* Uncomment if needing similar functionality for nested duck types */
// Attribute:
// [JsonConverterAttribute()]
//var jsonConverterAttr = typeof(JsonConverterAttribute).GetConstructor(new [] { typeof(Type) });
//if (jsonConverterAttr != null) {
// // ReSharper disable once InconsistentNaming
// var jsonConverterCABuilder = new CustomAttributeBuilder(
// jsonConverterAttr,
// new object[] { typeof(PayloadComplexTypeConverter) }
// );
// typeBuilder.SetCustomAttribute(jsonConverterCABuilder);
//}
var constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName, CallingConventions.Standard, new[] { typeof(string), typeof(string), typeof(Dictionary <string, Type>) });
var ctorIl = constructorBuilder.GetILGenerator();
// Now, we'll load the current instance ref in arg 0, along
// with the value of parameter "x" stored in arg X, into stfld.
for (var x = 0; x < backingFields.Count; x++)
{
ctorIl.Emit(OpCodes.Ldarg_0);
ctorIl.Emit(OpCodes.Ldarg_S, x + 1);
ctorIl.Emit(OpCodes.Stfld, backingFields[x]);
}
// Our work complete, we return.
ctorIl.Emit(OpCodes.Ret);
//--------------------------------------------------------------------
#endregion Constructor
}
private static void GenerateConstructor(TypeBuilder typeBuilder)
{
var constructor = typeBuilder.DefineConstructor(
MethodAttributes.Public | MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName,
CallingConventions.Standard, Type.EmptyTypes);
var constructorMethod = typeof(object).GetConstructor(Type.EmptyTypes);
var constructorGenerator = constructor.GetILGenerator();
constructorGenerator.Emit(OpCodes.Ldarg_0);
constructorGenerator.Emit(OpCodes.Call, constructorMethod);
constructorGenerator.Emit(OpCodes.Ret);
}
private void WeaveConstructor(TypeBuilder typeBuilder, EventBrokerResolvedType eventBrokerResolvedType)
{
ConstructorBuilder ctor = null;
ILGenerator ilGenerator = null;
var ctorArgs = new[] { eventBrokerResolvedType.DecalringType, typeof(EventInfo), eventBrokerResolvedType.EventBrokerInvokeDelegateType };
var baseCtor = eventBrokerResolvedType.EventBrokerBaseClassType.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, Type.DefaultBinder, ctorArgs, null);
ctor = typeBuilder.DefineConstructor(ctorAttrs, CallingConventions.Standard | CallingConventions.HasThis, ctorArgs);
ilGenerator = ctor.GetILGenerator();
ilGenerator.EmitLoadArg(0);
ctorArgs.ForEach(1, (arg, i) => ilGenerator.EmitLoadArg(i));
ilGenerator.Emit(OpCodes.Call, baseCtor);
ilGenerator.Emit(OpCodes.Ret);
}
public void Build(TypeBuilder typeBuilder, Type contractType)
{
ConstructorBuilder constructor = typeBuilder.DefineConstructor(
MethodAttributes.Public, CallingConventions.HasThis, new[] { contractType, typeof(IPointcut[]) });
ILGenerator il = constructor.GetILGenerator();
// call base constructor passing second parameter of this constructor as argument
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Ldarg_2);
il.Emit(OpCodes.Call, typeof(InvocationProxy).GetConstructors(BindingFlags.NonPublic | BindingFlags.Instance).First());
il.Emit(OpCodes.Ret);
}
private static void DefineForwardingConstructor(TypeBuilder definingType, Type baseType, Type[] parameters, Type[] baseParams, string[] paramNames, Action<ILGenerator> paramIL)
{
ConstructorBuilder builder = definingType.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, parameters);
int num = 0;
foreach (string str in paramNames)
{
builder.DefineParameter(++num, ParameterAttributes.None, str);
}
ILGenerator iLGenerator = builder.GetILGenerator();
iLGenerator.Emit(OpCodes.Ldarg_0);
paramIL(iLGenerator);
ConstructorInfo constructor = baseType.GetConstructor(baseParams);
iLGenerator.Emit(OpCodes.Call, constructor);
iLGenerator.Emit(OpCodes.Ret);
}
private static void BuildParameterlessConstructor(TypeBuilder proxyBuilder, Type proxyType,
TypeDebugging debug)
{
var constructor = proxyBuilder.DefineConstructor(
MethodAttributes.Private | MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName | MethodAttributes.HideBySig,
CallingConventions.Standard, Type.EmptyTypes);
using (var generator = debug.GetMethodDebugging(constructor))
{
generator.Emit(OpCodes.Ldarg_0);
var objectCtor = proxyType.GetConstructor(Type.EmptyTypes);
generator.Emit(OpCodes.Call, objectCtor);
generator.Emit(OpCodes.Ret);
}
}
public static void DefineCtor(TypeBuilder typeBuilder, FieldBuilder fieldBuilder)
{
var parameterTypes = new Type[] { fieldBuilder.FieldType };
ConstructorBuilder ctorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, parameterTypes);
ILGenerator il = ctorBuilder.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Stfld, fieldBuilder);
il.Emit(OpCodes.Ret);
MethodBuilder createBuider = typeBuilder.DefineMethod("<Create>", MethodAttributes.Static | MethodAttributes.Public, typeBuilder, parameterTypes);
il = createBuider.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Newobj, ctorBuilder);
il.Emit(OpCodes.Ret);
}
private static ILGenerator Generate_Constructor(TypeBuilder tb, FieldSet fields)
{
var cb = tb.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, new Type[] { typeof(string) });
var ilgen = cb.GetILGenerator();
ilgen.PushContext(new ILContext(fields));
// --- DECLARE PARAMETERS ---
ilgen.DeclareParameter("filename");
// --- DECLARE LOCALS ---
ilgen.DeclareLocal<TextReader>("tr");
ilgen.DeclareLocal<string>("quote");
ilgen.EmitCallToBaseConstructor(); // base();
ilgen.ConstructVariable<ArrayList>("_quotes"); // _quotes = new ArrayList();
ilgen.ConstructVariable<Random>("_random"); // _random = new Random();
ilgen.EmitLoadVariable("filename"); // "filename" - first constructor parameter
ilgen.EmitCall(typeof(File), "OpenText"); // invoke File.OpenText with "filename" parameter
ilgen.EmitStoreVariable("tr");
// Mark the loop label
ilgen.EmitLoop((gen, exit) =>
{
gen.EmitLoadVariable("tr"); // load local "tr"
gen.EmitCallvirt<TextReader>("ReadLine"); // call tr.ReadLine() (virtual)
gen.EmitStoreVariable("quote"); // store the result in the local "quote"
gen.EmitLoadVariable("quote"); // load the local "quote"
gen.Emit(OpCodes.Brfalse_S, exit); // branch to the exit label if "quote" is null
gen.EmitLoadVariable("_quotes"); // load "_quotes" field
gen.EmitLoadVariable("quote"); // load local "quote"
gen.EmitCallvirt<ArrayList, object>("Add"); // call _quotes.Add(object) (virtual)
gen.Emit(OpCodes.Pop); // pop the result of _quotes.Add(object) (unused)
});
ilgen.EmitLoadVariable("tr"); // load local "tr"
ilgen.EmitCallvirt<TextReader>("Close"); // call tr.Close() (virtual)
ilgen.Emit(OpCodes.Ret); // emit return opcode
ilgen.PopContext();
return ilgen;
}
private void CreateConstructor(TypeBuilder typeBuilder)
{
var ctor = SnapshotBaseType.GetConstructors(BindingFlags.Public | BindingFlags.Instance).First();
var ctorSignature = ctor.GetParameters().Select(p => p.ParameterType);
var ctorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, ctorSignature.ToArray());
var il = ctorBuilder.GetILGenerator();
il.Emit(OpCodes.Ldarg_0); // push this
int paramIndex = 1;
foreach (var param in ctorSignature) // push all constructor parameters onto the stack
{
il.Emit(OpCodes.Ldarg, paramIndex++);
}
il.Emit(OpCodes.Call, ctor); // call DynamicSnapshotBase constructor
il.Emit(OpCodes.Ret); // return
}
private void BuildConstructor(ConstructorInfo constructor, TypeBuilder typeBuilder)
{
ParameterInfo[] parameterInfos = constructor.GetParameters();
Type[] parameterTypes = new Type[parameterInfos.Length ];
//copy super ctor param types
for (int i = 0; i < parameterInfos.Length; i++)
{
parameterTypes[i] = parameterInfos[i].ParameterType;
}
ConstructorBuilder proxyConstructor = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, parameterTypes);
ILGenerator il = proxyConstructor.GetILGenerator();
for (int i = 0; i < parameterTypes.Length + 1 /* also load "this" */; i++)
{
il.Emit(OpCodes.Ldarg, i);
}
il.Emit(OpCodes.Callvirt, constructor);
il.Emit(OpCodes.Ret);
}
// generates this constructor:
// public NewType(param0, param1, ...) : base(param0, param1, ...) { }
private static void ImplementConstructor(TypeBuilder newType, ConstructorInfo baseCtor) {
ParameterInfo[] parameters = baseCtor.GetParameters();
Type[] parameterTypes = (from p in parameters select p.ParameterType).ToArray();
ConstructorBuilder newCtor = newType.DefineConstructor(
(baseCtor.Attributes & ~MethodAttributes.MemberAccessMask) | MethodAttributes.Public /* force public constructor */,
baseCtor.CallingConvention, parameterTypes);
// parameter 0 is 'this', so we start at index 1
for (int i = 0; i < parameters.Length; i++) {
newCtor.DefineParameter(i + 1, parameters[i].Attributes, parameters[i].Name);
}
// load all arguments (including 'this') in proper order, then call and return
ILGenerator ilGen = newCtor.GetILGenerator();
for (int i = 0; i <= parameterTypes.Length; i++) {
ilGen.Emit(OpCodes.Ldarg_S, (byte)i);
}
ilGen.Emit(OpCodes.Call, baseCtor);
ilGen.Emit(OpCodes.Ret);
}
private static void ImplementConstructor(TypeBuilder newType, ConstructorInfo baseConstructor)
{
var parameters = baseConstructor.GetParameters();
var parameterTypes = parameters.Select(p => p.ParameterType).ToArray();
var constructor = newType.DefineConstructor(MethodAttributes.Public, baseConstructor.CallingConvention, parameterTypes);
// parameter 0 is 'this', so we start at index 1
for (int i = 0; i < parameters.Length; i++)
{
constructor.DefineParameter(i + 1, parameters[i].Attributes, parameters[i].Name);
}
var ilGenerator = constructor.GetILGenerator();
for (int i = 0; i <= parameterTypes.Length; i++)
{
ilGenerator.Emit(OpCodes.Ldarg_S, (byte)i);
}
ilGenerator.Emit(OpCodes.Call, baseConstructor);
ilGenerator.Emit(OpCodes.Ret);
}
private static void ImplementConstructor(TypeBuilder newType, ConstructorInfo baseCtor)
{
ParameterInfo[] parameters = baseCtor.GetParameters();
Type[] parameterTypes = new Type[parameters.Length];
for (int idx = 0; idx < parameters.Length; idx++)
parameterTypes[idx] = parameters[idx].ParameterType;
ConstructorBuilder newCtor = newType.DefineConstructor(
(baseCtor.Attributes & ~MethodAttributes.MemberAccessMask) | MethodAttributes.Public /* force public constructor */,
baseCtor.CallingConvention, parameterTypes);
for (int i = 0; i < parameters.Length; i++)
newCtor.DefineParameter(i + 1, parameters[i].Attributes, parameters[i].Name);
ILGenerator ilGen = newCtor.GetILGenerator();
for (int i = 0; i <= parameterTypes.Length; i++)
ilGen.Emit(OpCodes.Ldarg_S, (byte)i);
ilGen.Emit(OpCodes.Call, baseCtor);
ilGen.Emit(OpCodes.Ret);
}
public void DefineContextType()
{
linqContextBuilder = cg.IL.TypeBuilder.DefineNestedType(ContextTypeName + cg.IL.GetNextUniqueIndex(),
TypeAttributes.Class | TypeAttributes.NestedPrivate | TypeAttributes.Sealed,
typeof(PHP.Core.LinqContext), null);
// .ctor:
ConstructorBuilder ctor = linqContextBuilder.DefineConstructor(MethodAttributes.Assembly,
CallingConventions.HasThis, Types.LinqContextArgs);
ILEmitter il = new ILEmitter(ctor);
il.Ldarg(0);
il.Ldarg(1);
il.Ldarg(2);
il.Ldarg(3);
il.Ldarg(4);
il.Emit(OpCodes.Call, Constructors.LinqContext);
il.Emit(OpCodes.Ret);
linqContextCtor = ctor;
}
public DataServiceContextGenerator(Uri serviceRoot)
{
AssemblyName myAsmName = new AssemblyName("DynamicAssembly" + Guid.NewGuid().ToString());
AssemblyBuilder myAsmBuilder = Thread.GetDomain().DefineDynamicAssembly(myAsmName,
AssemblyBuilderAccess.Run);
// Generate a single-module assembly.
_moduleBuilder =
myAsmBuilder.DefineDynamicModule(myAsmName.Name);
_contextTypeBuilder = _moduleBuilder.DefineType("MyDataContext",
TypeAttributes.Public,
typeof(MyDataServiceContext));
ConstructorBuilder ctorBuilder = _contextTypeBuilder.DefineConstructor(
MethodAttributes.Public,
CallingConventions.Standard,
null);
ILGenerator ctorIL = ctorBuilder.GetILGenerator();
ctorIL.Emit(OpCodes.Ldarg_0);
ctorIL.Emit(OpCodes.Ldstr, serviceRoot.AbsoluteUri);
ctorIL.Emit(OpCodes.Newobj, typeof(Uri).GetConstructor(new[] { typeof(string) }));
ctorIL.Emit(OpCodes.Call, typeof(MyDataServiceContext).GetConstructors().First());
ctorIL.Emit(OpCodes.Ret);
}
private static void AddParentConstructor(TypeBuilder typeBuilder, Type parentType)
{
var parentConstructor = parentType.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.CreateInstance | BindingFlags.Instance).First();
var parentParameters = parentConstructor.GetParameters();
var parameterTypes = parentParameters.Select(x => x.ParameterType).ToArray();
var constructorBuilder = typeBuilder.DefineConstructor(parentConstructor.Attributes | MethodAttributes.Public, parentConstructor.CallingConvention, parameterTypes);
var generator = constructorBuilder.GetILGenerator();
// load 'this' pointer
generator.Emit(OpCodes.Ldarg_0);
for (var i = 1; i <= parentParameters.Length; i++)
{
var parentParameter = parentParameters[i - 1];
constructorBuilder.DefineParameter(i, parentParameter.Attributes, parentParameter.Name);
generator.Emit(OpCodes.Ldarg_S, i);
}
generator.Emit(OpCodes.Call, parentConstructor);
generator.Emit(OpCodes.Ret);
}
void SetUp (AssemblyBuilderAccess access)
{
AssemblyName assemblyName = new AssemblyName ();
assemblyName.Name = ASSEMBLY_NAME;
assembly = AppDomain.CurrentDomain.DefineDynamicAssembly (
assemblyName, access,
Path.GetTempPath ());
module = assembly.DefineDynamicModule ("module1");
tb = module.DefineType ("Bar");
GenericTypeParameterBuilder [] typeParams = tb.DefineGenericParameters ("T");
cb = tb.DefineConstructor (MethodAttributes.Public,
CallingConventions.Standard,
new Type [] { typeof (string), typeof (int) });
ILGenerator ig = cb.GetILGenerator ();
ig.Emit (OpCodes.Ret);
typeBarOfInt32 = tb.MakeGenericType (typeof (int));
ci = TypeBuilder.GetConstructor (typeBarOfInt32, cb);
}
public static void ImplementIn(this ConstructorInfo constructorInfo, TypeBuilder proxy)
{
var arguments = constructorInfo.GetParameters();
var types = arguments.Select(arg => arg.GetType()).ToArray();
var constructor = proxy.DefineConstructor(MethodAttributes.Public, constructorInfo.CallingConvention, types);
for (var index = 0; index < arguments.Length; index++)
{
var argument = arguments[index];
constructor.DefineParameter(index, argument.Attributes, argument.Name);
}
var generator = constructor.GetILGenerator();
for (var index = 0; index <= types.Length; index++)
{
// generator.Emit(OpCodes.Ldarg_S, (byte)index);
generator.Emit(OpCodes.Ldarg_S, index);
}
generator.Emit(OpCodes.Call, constructorInfo);
generator.Emit(OpCodes.Ret);
}
private static void AddConstructor(TypeBuilder typeBuilder, Type serviceInterface, FieldInfo proxyField, Type baseType) {
var constructorBuilder = typeBuilder.DefineConstructor(
MethodAttributes.Public | MethodAttributes.HideBySig |
MethodAttributes.SpecialName | MethodAttributes.RTSpecialName,
CallingConventions.HasThis,
new[] {
serviceInterface
});
// Generate the constructor IL.
var gen = constructorBuilder.GetILGenerator();
// The constructor calls the base constructor with the string[] parameter.
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Call, baseType.GetConstructor(BindingFlags.NonPublic | BindingFlags.Instance, Type.DefaultBinder, Type.EmptyTypes, null));
gen.Emit(OpCodes.Ldarg_0);
gen.Emit(OpCodes.Ldarg_1);
gen.Emit(OpCodes.Stfld, proxyField);
gen.Emit(OpCodes.Ret);
}
private static void GenerateConstructor(
TypeBuilder typeBuilder,
TypeMetadata typeMetadata,
ConstructorMetadata constructorMetadata,
FieldMetadataFieldBuilderMap fieldBuilders)
{
var constructor = typeBuilder.DefineConstructor(
constructorMetadata.MethodAttributes,
CallingConventions.Standard,
constructorMetadata.ParameterTypes);
DefineParameterNames(constructor, constructorMetadata);
var il = constructor.GetILGenerator();
InitializeInstanceFields(il, typeMetadata, constructorMetadata, fieldBuilders);
if (constructorMetadata.CallBaseConstructor)
{
GenerateBaseConstructorCall(il, constructorMetadata);
}
il.Emit(OpCodes.Ret);
}
public static ConstructorBuilder DefineConstructor(this TypeBuilder tb, MethodAttributes attributes, CallingConventions callingConventions, GenericTypeParameterBuilder[] parameterTypes)
{
return(tb.DefineConstructor(attributes, callingConventions, parameterTypes.Select(g => g.AsType()).ToArray()));
}
/// <summary>
/// Generate the declaration for the IgnoresAccessChecksToAttribute type.
/// This attribute will be both defined and used in the dynamic assembly.
/// Each usage identifies the name of the assembly containing non-public
/// types the dynamic assembly needs to access. Normally those types
/// would be inaccessible, but this attribute allows them to be visible.
/// It works like a reverse InternalsVisibleToAttribute.
/// This method returns the ConstructorInfo of the generated attribute.
/// </summary>
public static ConstructorInfo AddToModule(ModuleBuilder mb)
{
TypeBuilder attributeTypeBuilder =
mb.DefineType("System.Runtime.CompilerServices.IgnoresAccessChecksToAttribute",
TypeAttributes.Public | TypeAttributes.Class,
typeof(Attribute));
// Create backing field as:
// private string assemblyName;
FieldBuilder assemblyNameField =
attributeTypeBuilder.DefineField("assemblyName", typeof(string), FieldAttributes.Private);
// Create ctor as:
// public IgnoresAccessChecksToAttribute(string)
ConstructorBuilder constructorBuilder = attributeTypeBuilder.DefineConstructor(MethodAttributes.Public,
CallingConventions.HasThis,
new Type[] { assemblyNameField.FieldType });
ILGenerator il = constructorBuilder.GetILGenerator();
// Create ctor body as:
// this.assemblyName = {ctor parameter 0}
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg, 1);
il.Emit(OpCodes.Stfld, assemblyNameField);
// return
il.Emit(OpCodes.Ret);
// Define property as:
// public string AssemblyName {get { return this.assemblyName; } }
_ = attributeTypeBuilder.DefineProperty(
"AssemblyName",
PropertyAttributes.None,
CallingConventions.HasThis,
returnType: typeof(string),
parameterTypes: null);
MethodBuilder getterMethodBuilder = attributeTypeBuilder.DefineMethod(
"get_AssemblyName",
MethodAttributes.Public,
CallingConventions.HasThis,
returnType: typeof(string),
parameterTypes: null);
// Generate body:
// return this.assemblyName;
il = getterMethodBuilder.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldfld, assemblyNameField);
il.Emit(OpCodes.Ret);
// Generate the AttributeUsage attribute for this attribute type:
// [AttributeUsage(AttributeTargets.Assembly, AllowMultiple = true)]
TypeInfo attributeUsageTypeInfo = typeof(AttributeUsageAttribute).GetTypeInfo();
// Find the ctor that takes only AttributeTargets
ConstructorInfo attributeUsageConstructorInfo =
attributeUsageTypeInfo.DeclaredConstructors
.Single(c => c.GetParameters().Length == 1 &&
c.GetParameters()[0].ParameterType == typeof(AttributeTargets));
// Find the property to set AllowMultiple
PropertyInfo allowMultipleProperty =
attributeUsageTypeInfo.DeclaredProperties
.Single(f => string.Equals(f.Name, "AllowMultiple"));
// Create a builder to construct the instance via the ctor and property
CustomAttributeBuilder customAttributeBuilder =
new CustomAttributeBuilder(attributeUsageConstructorInfo,
new object[] { AttributeTargets.Assembly },
new PropertyInfo[] { allowMultipleProperty },
new object[] { true });
// Attach this attribute instance to the newly defined attribute type
attributeTypeBuilder.SetCustomAttribute(customAttributeBuilder);
// Make the TypeInfo real so the constructor can be used.
return(attributeTypeBuilder.CreateTypeInfo() !.DeclaredConstructors.Single());
}
