public static MethodBuilder DefineMethod(this TypeBuilder typeBuilder, MethodInfo method, MethodAttributes? attributes = null, ParameterInfo[] parameters = null)
{
Type[] parametersTypes = null;
MethodBuilder methodBuilder = null;
parameters = parameters ?? method.GetParameters();
parametersTypes = parameters.ToArray(parameter => parameter.ParameterType);
attributes = attributes ?? method.Attributes & ~MethodAttributes.Abstract;
methodBuilder = typeBuilder.DefineMethod(method.Name, attributes.Value, method.ReturnType, parametersTypes);
parameters.ForEach(1, (parameter, i) => {
var parameterBuilder = methodBuilder.DefineParameter(i, parameter.Attributes, parameter.Name);
if (parameter.IsDefined<ParamArrayAttribute>()) {
parameterBuilder.SetCustomAttribute<ParamArrayAttribute>();
}
else if (parameter.IsOut) {
parameterBuilder.SetCustomAttribute<OutAttribute>();
}
else if (parameter.IsOptional) {
parameterBuilder.SetCustomAttribute<OptionalAttribute>()
.SetConstant(parameter.DefaultValue);
}
});
return methodBuilder;
}
public NonTargetedMethodMetadata(MethodInfo method)
: base(method)
{
_methodAttributes = method.Attributes;
_methodAttributes &= ~MethodAttributes.Abstract;
_methodAttributes &= ~MethodAttributes.NewSlot;
}
public EventKey( TypeKey typeKey, string type, string name, MethodAttributes addMethodAttributes)
{
this.typeKey = typeKey;
this.type = type;
this.name = name;
this.addMethodAttributes = addMethodAttributes;
}
public static MethodDefinition AddPropertyGetter(
PropertyDefinition property
, MethodAttributes methodAttributes = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.NewSlot | MethodAttributes.Virtual
, FieldDefinition backingField = null)
{
if (backingField == null)
{
// TODO: Try and find existing friendly named backingFields first.
backingField = AddPropertyBackingField(property);
}
var methodName = "get_" + property.Name;
var getter = new MethodDefinition(methodName, methodAttributes, property.PropertyType)
{
IsGetter = true,
Body = {InitLocals = true},
};
getter.Body.Variables.Add(new VariableDefinition(property.PropertyType));
var returnStart = Instruction.Create(OpCodes.Ldloc_0);
getter.Body.Instructions.Append(
Instruction.Create(OpCodes.Ldarg_0),
Instruction.Create(OpCodes.Ldfld, backingField),
Instruction.Create(OpCodes.Stloc_0),
Instruction.Create(OpCodes.Br_S, returnStart),
returnStart,
Instruction.Create(OpCodes.Ret)
);
property.GetMethod = getter;
property.DeclaringType.Methods.Add(getter);
return getter;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="typeBuilder">Type builder</param>
/// <param name="attributes">Attributes for the constructor (public, private, etc.)</param>
/// <param name="parameters">Parameter types for the constructor</param>
/// <param name="callingConventions">Calling convention for the constructor</param>
public ConstructorBuilder(TypeBuilder typeBuilder, MethodAttributes attributes,
IEnumerable<Type> parameters, CallingConventions callingConventions)
{
if (typeBuilder == null)
throw new ArgumentNullException("typeBuilder");
Type = typeBuilder;
Attributes = attributes;
Parameters = new List<ParameterBuilder>();
Parameters.Add(new ParameterBuilder(null, 0));
if (parameters != null)
{
int x = 1;
foreach (var parameterType in parameters)
{
Parameters.Add(new ParameterBuilder(parameterType, x));
++x;
}
}
CallingConventions = callingConventions;
Builder = Type.Builder.DefineConstructor(attributes, callingConventions,
(parameters != null && parameters.Count() > 0)
? parameters.ToArray()
: System.Type.EmptyTypes);
Generator = Builder.GetILGenerator();
}
private void CheckSupport(EventDefinition eventInfo, MethodAttributes methodAttributes)
{
EventAttributes eventAttributes = eventInfo.Attributes;
string warningTemplate = "Event '" + name + "' has unsupported attribute: '{0}'.";
// in order to reduce output we warn only about important attributes which are not currently
// supported:
// EventDefinition properties
// EventAttributes
//if ((eventAttributes & EventAttributes.RTSpecialName) != 0) { Logger.Warning(warningTemplate, "RTSpecialName"); }
//if ((eventAttributes & EventAttributes.SpecialName) != 0) { Logger.Warning(warningTemplate, "SpecialName"); }
// MethodAttributes
//if ((methodAttributes & MethodAttributes.CheckAccessOnOverride) != 0) { Logger.Warning(warningTemplate, "CheckAccessOnOverride"); }
//if ((methodAttributes & MethodAttributes.FamANDAssem) != 0) { Logger.Warning(warningTemplate, "FamANDAssem"); }
// TODO: support this: if ((methodAttributes & MethodAttributes.HasSecurity) != 0) { Logger.Warning(warningTemplate, "HasSecurity"); }
//if ((methodAttributes & MethodAttributes.HideBySig) != 0) { Logger.Warning(warningTemplate, "HideBySig"); }
//if ((methodAttributes & MethodAttributes.NewSlot) != 0) { Logger.Warning(warningTemplate, "NewSlot"); }
// TODO: support this: if ((methodAttributes & MethodAttributes.PinvokeImpl) != 0) { Logger.Warning(warningTemplate, "PinvokeImpl"); }
//if ((methodAttributes & MethodAttributes.PrivateScope) != 0) { Logger.Warning(warningTemplate, "PrivateScope"); }
// TODO: support this: if ((methodAttributes & MethodAttributes.RequireSecObject) != 0) { Logger.Warning(warningTemplate, "RequiresSecObject"); }
//if ((methodAttributes & MethodAttributes.ReuseSlot) != 0) { Logger.Warning(warningTemplate, "ReuseSlot"); }
//if ((methodAttributes & MethodAttributes.RTSpecialName) != 0) { Logger.Warning(warningTemplate, "RTSpecialName"); }
//if ((methodAttributes & MethodAttributes.SpecialName) != 0) { Logger.Warning(warningTemplate, "SpecialName"); }
// TODO: support this: if ((methodAttributes & MethodAttributes.UnmanagedExport) != 0) { Logger.Warning(warningTemplate, "UnmanagedExport"); }
}
public ArtificialMethodInfo(string Name, Type DeclaringType, Type ReturnType, MethodAttributes MethodAttributes)
{
_Name = Name;
_DeclaringType = DeclaringType;
_ReturnType = ReturnType;
_MethodAttributes = MethodAttributes;
}
public MethodBuilder(TypeBuilder TypeBuilder, string Name,
MethodAttributes Attributes, IEnumerable<Type> Parameters, Type ReturnType)
: base()
{
Contract.Requires<ArgumentNullException>(TypeBuilder!=null,"TypeBuilder");
Contract.Requires<ArgumentNullException>(!string.IsNullOrEmpty(Name),"Name");
this.Name = Name;
this.Type = TypeBuilder;
this.Attributes = Attributes;
this.ReturnType = (ReturnType == null) ? typeof(void) : ReturnType;
this.Parameters = new List<ParameterBuilder>();
this.Parameters.Add(new ParameterBuilder(null, 0));
if (Parameters != null)
{
int x = 1;
if (Name.StartsWith("set_", StringComparison.InvariantCulture))
x = -1;
foreach (Type ParameterType in Parameters)
{
this.Parameters.Add(new ParameterBuilder(ParameterType, x));
++x;
}
}
Builder = Type.Builder.DefineMethod(Name, Attributes, ReturnType,
(Parameters != null && Parameters.Count() > 0) ? Parameters.ToArray() : System.Type.EmptyTypes);
Generator = Builder.GetILGenerator();
}
public MethodDefinition(string name, MethodAttributes attributes, TypeReference returnType)
: base(name, returnType)
{
this.attributes = (ushort) attributes;
this.HasThis = !this.IsStatic;
this.token = new MetadataToken (TokenType.Method);
}
#pragma warning restore 169, 414
internal MethodBuilder (TypeBuilder tb, string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] returnModReq, Type[] returnModOpt, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt)
{
this.name = name;
this.attrs = attributes;
this.call_conv = callingConvention;
this.rtype = returnType;
this.returnModReq = returnModReq;
this.returnModOpt = returnModOpt;
this.paramModReq = paramModReq;
this.paramModOpt = paramModOpt;
// The MSDN docs does not specify this, but the MS MethodBuilder
// appends a HasThis flag if the method is not static
if ((attributes & MethodAttributes.Static) == 0)
this.call_conv |= CallingConventions.HasThis;
if (parameterTypes != null) {
for (int i = 0; i < parameterTypes.Length; ++i)
if (parameterTypes [i] == null)
throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
this.parameters = new Type [parameterTypes.Length];
System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
}
type = tb;
table_idx = get_next_table_index (this, 0x06, true);
((ModuleBuilder)tb.Module).RegisterToken (this, GetToken ().Token);
}
public PropertyKey( TypeKey typeKey, PropertyDefinition prop )
{
this.typeKey = typeKey;
this.type = prop.PropertyType.FullName;
this.name = prop.Name;
this.getterMethodAttributes = prop.GetMethod != null ? prop.GetMethod.Attributes : 0;
}
public MethodBuilder(TypeBuilder typeBuilder, string name,
MethodAttributes attributes, IEnumerable<Type> parameters, Type returnType)
{
if (typeBuilder == null)
throw new ArgumentNullException("typeBuilder");
if (string.IsNullOrEmpty(name))
throw new ArgumentNullException("name");
Name = name;
Type = typeBuilder;
Attributes = attributes;
ReturnType = (returnType == null) ? typeof (void) : returnType;
Parameters = new List<ParameterBuilder>();
Parameters.Add(new ParameterBuilder(null, 0));
if (parameters != null)
{
int x = 1;
if (name.StartsWith("set_", StringComparison.InvariantCulture))
x = -1;
foreach (var parameterType in parameters)
{
Parameters.Add(new ParameterBuilder(parameterType, x));
++x;
}
}
Builder = Type.Builder.DefineMethod(name, attributes, returnType,
(parameters != null && parameters.Count() > 0)
? parameters.ToArray()
: System.Type.EmptyTypes);
Generator = Builder.GetILGenerator();
}
/// <summary>
/// Defines a constructor.
/// </summary>
/// <param name="typeBuilder">The type builder.</param>
/// <param name="methodAttributes">The method attributes.</param>
/// <param name="callingConvention">The calling convention.</param>
/// <param name="parameterTypes">The parameter types.</param>
/// <param name="parameterNames">The parameter names.</param>
/// <returns>The constructor builder.</returns>
public static ConstructorBuilder DefineConstructor(this TypeBuilder typeBuilder,
MethodAttributes methodAttributes,
CallingConventions callingConvention,
Type[] parameterTypes,
string[] parameterNames)
{
if (typeBuilder == null)
throw new ArgumentNullException("typeBuilder");
if (parameterTypes == null)
throw new ArgumentNullException("parameterTypes");
if (parameterNames == null)
throw new ArgumentNullException("parameterNames");
if (parameterTypes.Length != parameterNames.Length)
throw new ArgumentException(Resources.NumberOfParameterTypesAndNamesMustBeEqual);
// Define constructor.
var constructorBuilder = typeBuilder.DefineConstructor(
methodAttributes,
callingConvention,
parameterTypes);
// Define constructor parameters.
constructorBuilder.DefineParameters(parameterNames);
return constructorBuilder;
}
public void GetILGenerator_ReturnsNonNull(MethodAttributes attributes)
{
TypeBuilder type = Helpers.DynamicType(TypeAttributes.NotPublic);
ConstructorBuilder constructor = type.DefineConstructor(attributes, CallingConventions.Standard, new Type[0]);
Assert.NotNull(constructor.GetILGenerator());
Assert.NotNull(constructor.GetILGenerator(s_randomInt));
}
private object[] ExecutePosTest(
CustomAttributeBuilder customAttrBuilder,
MethodAttributes getMethodAttr,
Type returnType,
Type[] paramTypes,
BindingFlags bindingAttr)
{
TypeBuilder myTypeBuilder = GetTypeBuilder(TypeAttributes.Class | TypeAttributes.Public);
PropertyBuilder myPropertyBuilder = myTypeBuilder.DefineProperty(DynamicPropertyName,
PropertyAttributes.HasDefault,
returnType, null);
myPropertyBuilder.SetCustomAttribute(customAttrBuilder);
// Define the "get" accessor method for DynamicPropertyName
MethodBuilder myMethodBuilder = myTypeBuilder.DefineMethod(DynamicMethodName,
getMethodAttr, returnType, paramTypes);
ILGenerator methodILGenerator = myMethodBuilder.GetILGenerator();
methodILGenerator.Emit(OpCodes.Ldarg_0);
methodILGenerator.Emit(OpCodes.Ret);
// Map the 'get' method created above to our PropertyBuilder
myPropertyBuilder.SetGetMethod(myMethodBuilder);
Type myType = myTypeBuilder.CreateTypeInfo().AsType();
PropertyInfo myProperty = myType.GetProperty(DynamicPropertyName, bindingAttr);
return myProperty.GetCustomAttributes(false).Select(a => (object)a).ToArray();
}
public void DefineConstructor(MethodAttributes attributes, Type[] parameterTypes, CallingConventions callingConvention)
{
TypeBuilder type = Helpers.DynamicType(TypeAttributes.Class | TypeAttributes.Public);
FieldBuilder fieldBuilderA = type.DefineField("TestField", typeof(int), FieldAttributes.Private);
FieldBuilder fieldBuilderB = type.DefineField("TestField", typeof(int), FieldAttributes.Private);
ConstructorBuilder constructor = type.DefineConstructor(attributes, callingConvention, parameterTypes);
ILGenerator ctorIlGenerator = constructor.GetILGenerator();
if (parameterTypes.Length != 0)
{
// Calling base class constructor
ctorIlGenerator.Emit(OpCodes.Ldarg_0);
ctorIlGenerator.Emit(OpCodes.Call, typeof(object).GetConstructor(new Type[0]));
ctorIlGenerator.Emit(OpCodes.Ldarg_0);
ctorIlGenerator.Emit(OpCodes.Ldarg_1);
ctorIlGenerator.Emit(OpCodes.Stfld, fieldBuilderA);
ctorIlGenerator.Emit(OpCodes.Ldarg_0);
ctorIlGenerator.Emit(OpCodes.Ldarg_2);
ctorIlGenerator.Emit(OpCodes.Stfld, fieldBuilderB);
}
ctorIlGenerator.Emit(OpCodes.Ret);
Helpers.VerifyConstructor(constructor, type, attributes, callingConvention, parameterTypes);
}
public ILGenerator CreateFunction(TypeBuilder a_TypeBuilder, string a_Name, MethodAttributes a_MethodAttributes, Type a_ReturnType, Type[] a_Parameters)
{
MethodBuilder methodBuilder = a_TypeBuilder.DefineMethod(a_Name, a_MethodAttributes, a_ReturnType, a_Parameters);
ILGenerator ilGenerator = methodBuilder.GetILGenerator();
return ilGenerator;
}
internal FunctionObject(string name, ParameterDeclaration[] parameter_declarations, TypeExpression return_type_expr, Block body, FunctionScope own_scope, ScriptObject enclosing_scope, Context funcContext, MethodAttributes attributes, CustomAttributeList customAttributes, bool isMethod) : base(body.Globals.globalObject.originalFunction.originalPrototype, name, parameter_declarations.Length)
{
this.parameter_declarations = parameter_declarations;
int length = parameter_declarations.Length;
this.formal_parameters = new string[length];
for (int i = 0; i < length; i++)
{
this.formal_parameters[i] = parameter_declarations[i].identifier;
}
this.argumentsSlotNumber = 0;
this.return_type_expr = return_type_expr;
if (this.return_type_expr != null)
{
own_scope.AddReturnValueField();
}
this.body = body;
this.method = null;
this.parameterInfos = null;
this.funcContext = funcContext;
this.own_scope = own_scope;
this.own_scope.owner = this;
if ((!(enclosing_scope is ActivationObject) || !((ActivationObject) enclosing_scope).fast) && !isMethod)
{
this.argumentsSlotNumber = this.own_scope.GetNextSlotNumber();
JSLocalField field = (JSLocalField) this.own_scope.AddNewField("arguments", null, FieldAttributes.PrivateScope);
field.type = new TypeExpression(new ConstantWrapper(Typeob.Object, funcContext));
field.isDefined = true;
this.hasArgumentsObject = true;
}
else
{
this.hasArgumentsObject = false;
}
this.implementedIface = null;
this.implementedIfaceMethod = null;
this.isMethod = isMethod;
this.isExpandoMethod = (customAttributes != null) && customAttributes.ContainsExpandoAttribute();
this.isStatic = this.own_scope.isStatic = (attributes & MethodAttributes.Static) != MethodAttributes.PrivateScope;
this.suppressIL = false;
this.noVersionSafeAttributeSpecified = true;
this.fields = this.own_scope.GetLocalFields();
this.enclosing_scope = enclosing_scope;
this.must_save_stack_locals = false;
this.text = null;
this.mb = null;
this.cb = null;
this.attributes = attributes;
if (!this.isStatic)
{
this.attributes |= MethodAttributes.HideBySig;
}
this.globals = body.Globals;
this.superConstructor = null;
this.superConstructorCall = null;
this.customAttributes = customAttributes;
base.noExpando = false;
this.clsCompliance = CLSComplianceSpec.NotAttributed;
this.engineLocal = null;
this.partiallyEvaluated = false;
}
public void PosTest1()
{
int i = 0;
MethodAttributes[] attributes = new MethodAttributes[] {
MethodAttributes.Assembly,
MethodAttributes.CheckAccessOnOverride,
MethodAttributes.FamANDAssem,
MethodAttributes.Family,
MethodAttributes.FamORAssem,
MethodAttributes.Final,
MethodAttributes.HasSecurity,
MethodAttributes.HideBySig,
MethodAttributes.MemberAccessMask,
MethodAttributes.NewSlot,
MethodAttributes.Private,
MethodAttributes.PrivateScope,
MethodAttributes.Public,
MethodAttributes.RequireSecObject,
MethodAttributes.ReuseSlot,
MethodAttributes.RTSpecialName,
MethodAttributes.SpecialName,
MethodAttributes.Static,
MethodAttributes.UnmanagedExport,
MethodAttributes.Virtual,
MethodAttributes.VtableLayoutMask
};
for (; i < attributes.Length; ++i)
{
ILGenerator generator =
CreateConstructorBuilder("PosTest1_Type" + i, attributes[i]).GetILGenerator();
Assert.NotNull(generator);
}
}
internal EventGen(TypeGen owner, string name, Type type, MethodAttributes mthAttr)
{
_owner = owner;
Name = name;
_type = type;
_attrs = mthAttr;
}
internal FunctionObject(Type t, string name, string method_name, string[] formal_parameters, JSLocalField[] fields, bool must_save_stack_locals, bool hasArgumentsObject, string text, VsaEngine engine) : base(engine.Globals.globalObject.originalFunction.originalPrototype, name, formal_parameters.Length)
{
base.engine = engine;
this.formal_parameters = formal_parameters;
this.argumentsSlotNumber = 0;
this.body = null;
this.method = TypeReflector.GetTypeReflectorFor(Globals.TypeRefs.ToReferenceContext(t)).GetMethod(method_name, BindingFlags.Public | BindingFlags.Static);
this.parameterInfos = this.method.GetParameters();
if (!Microsoft.JScript.CustomAttribute.IsDefined(this.method, typeof(JSFunctionAttribute), false))
{
this.isMethod = true;
}
else
{
JSFunctionAttributeEnum attributeValue = ((JSFunctionAttribute) Microsoft.JScript.CustomAttribute.GetCustomAttributes(this.method, typeof(JSFunctionAttribute), false)[0]).attributeValue;
this.isExpandoMethod = (attributeValue & JSFunctionAttributeEnum.IsExpandoMethod) != JSFunctionAttributeEnum.None;
}
this.funcContext = null;
this.own_scope = null;
this.fields = fields;
this.must_save_stack_locals = must_save_stack_locals;
this.hasArgumentsObject = hasArgumentsObject;
this.text = text;
this.attributes = MethodAttributes.Public;
this.globals = engine.Globals;
this.superConstructor = null;
this.superConstructorCall = null;
this.enclosing_scope = this.globals.ScopeStack.Peek();
base.noExpando = false;
this.clsCompliance = CLSComplianceSpec.NotAttributed;
}
internal PropertyGen(TypeGen owner, MethodAttributes attrs, Type type, string name)
{
this.owner = owner;
this.attrs = attrs;
this.type = type;
this.name = name;
}
internal void StartMethod(string name, Type returns, Type[] parameters, MethodAttributes methodAttributes)
{
var before = "";
var firstArgIdx = 1;
if (methodAttributes.HasFlag(MethodAttributes.Public)) before += "public ";
if (methodAttributes.HasFlag(MethodAttributes.Static))
{
firstArgIdx = 0;
before += "static ";
}
if (methodAttributes.HasFlag(MethodAttributes.Virtual)) before += "virtual ";
switch (parameters.Length)
{
case 0:
WriteLine(String.Format("{2}{0} {1}()", returns.ToSimpleName(), name, before));
break;
case 1:
WriteLine(String.Format("{2}{0} {1}({3} arg{4})", returns.ToSimpleName(), name, before, parameters[0].ToSimpleName(), firstArgIdx));
break;
default:
WriteLine(String.Format("{2}{0} {1}(", returns.ToSimpleName(), name, before));
Indent++;
int idx = 0;
foreach (var par in parameters)
{
WriteLine(
$"{par.ToSimpleName()} arg{idx + firstArgIdx}{(idx + 1 == parameters.Length ? ')' : ',')}");
idx++;
}
Indent--;
break;
}
OpenScope();
}
public ConstructorBuilder DefineConstructor(MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes)
{
var cb = _typeBuilder.DefineConstructor(attributes, callingConvention, parameterTypes);
_members.Add(cb);
_paramsByMember.Add(cb, parameterTypes);
return cb;
}
public void DefineConstructor(MethodAttributes methodAttributes, Type[] parameterTypes, CallingConventions callingConvention, BindingFlags bindingFlags)
{
TypeBuilder type = Helpers.DynamicType(TypeAttributes.Class | TypeAttributes.Public);
FieldBuilder fieldBuilderA = type.DefineField("TestField", typeof(int), FieldAttributes.Private);
FieldBuilder fieldBuilderB = type.DefineField("TestField", typeof(int), FieldAttributes.Private);
ConstructorBuilder ctorBuilder = type.DefineConstructor(methodAttributes, callingConvention, parameterTypes);
ILGenerator ctorIlGenerator = ctorBuilder.GetILGenerator();
if (parameterTypes.Length != 0)
{
//Calling base class constructor
ctorIlGenerator.Emit(OpCodes.Ldarg_0);
ctorIlGenerator.Emit(OpCodes.Call, typeof(object).GetConstructor(new Type[0]));
ctorIlGenerator.Emit(OpCodes.Ldarg_0);
ctorIlGenerator.Emit(OpCodes.Ldarg_1);
ctorIlGenerator.Emit(OpCodes.Stfld, fieldBuilderA);
ctorIlGenerator.Emit(OpCodes.Ldarg_0);
ctorIlGenerator.Emit(OpCodes.Ldarg_2);
ctorIlGenerator.Emit(OpCodes.Stfld, fieldBuilderB);
}
ctorIlGenerator.Emit(OpCodes.Ret);
Type createdType = type.CreateTypeInfo().AsType();
Assert.NotNull(createdType.GetConstructors(bindingFlags).FirstOrDefault());
}
public MethodDefinitionProjection(MethodDefinition method, MethodDefinitionTreatment treatment)
{
Attributes = method.Attributes;
ImplAttributes = method.ImplAttributes;
Name = method.Name;
Treatment = treatment;
}
/// <summary>
/// 타입의 생성자를 생성합니다.
/// </summary>
/// <param name="methodAttributes"> 생성자 메서드인 .ctor 의 메서드 특성입니다. </param>
/// <param name="callingConventions"> 메서드의 유효한 호출 규칙입니다. </param>
/// <param name="parameterCriteriaMetadataInfos"> 매개 변수의 표준적인 메타데이터 정보입니다. </param>
/// <returns>
/// 생성자를 생성할 때 사용하는 <see cref="ConstructorBuilder"/> 객체를 반환합니다.
/// </returns>
public ConstructorBuilder CreateConstructor(MethodAttributes methodAttributes, CallingConventions callingConventions, IEnumerable<ParameterCriteriaMetadataInfo> parameterCriteriaMetadataInfos)
{
if (isStaticMethod(methodAttributes))
{
methodAttributes = MethodAttributes.Static | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName | MethodAttributes.Private | MethodAttributes.HideBySig;
callingConventions = CallingConventions.Standard;
}
else
{
callingConventions = CallingConventions.HasThis;
}
var constructorBuilder = this.TypeBuilder.DefineConstructor(methodAttributes, callingConventions, parameterCriteriaMetadataInfos.Select( o => o.Type).ToArray());
int iSeqence = 0;
foreach (var parameter in parameterCriteriaMetadataInfos)
{
iSeqence++;
constructorBuilder.DefineParameter(iSeqence, parameter.ParameterAttribute, parameter.Name);
}
var il = constructorBuilder.GetILGenerator();
if (isStaticMethod(methodAttributes)) // 정적 생성자는 Object 개체 파생이 아니므로 Object 생성을 하지 않음
{
il.Emit(OpCodes.Nop);
}
else
{
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, this.TypeBuilder.BaseType.GetConstructors()[0]);
}
return constructorBuilder;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="TypeBuilder">Type builder</param>
/// <param name="Name">Name of the method</param>
/// <param name="Attributes">Attributes for the method (public, private, etc.)</param>
/// <param name="Parameters">Parameter types for the method</param>
/// <param name="ReturnType">Return type for the method</param>
public MethodBuilder(TypeBuilder TypeBuilder, string Name,
MethodAttributes Attributes, List<Type> Parameters, Type ReturnType)
: base()
{
if (TypeBuilder == null)
throw new ArgumentNullException("TypeBuilder");
if (string.IsNullOrEmpty(Name))
throw new ArgumentNullException("Name");
this.Name = Name;
this.Type = TypeBuilder;
this.Attributes = Attributes;
this.ReturnType = (ReturnType == null) ? typeof(void) : ReturnType;
this.Parameters = new List<ParameterBuilder>();
this.Parameters.Add(new ParameterBuilder(null, 0));
if (Parameters != null)
{
int x = 1;
if (Name.StartsWith("set_"))
x = -1;
foreach (Type ParameterType in Parameters)
{
this.Parameters.Add(new ParameterBuilder(ParameterType, x));
++x;
}
}
Commands = new List<ICommand>();
Builder = Type.Builder.DefineMethod(Name, Attributes, ReturnType,
(Parameters != null && Parameters.Count > 0) ? Parameters.ToArray() : System.Type.EmptyTypes);
Generator = Builder.GetILGenerator();
}
public MethodBuilder DefineMethod(string name, MethodAttributes attributes, Type returnType, Type[] parameterTypes)
{
var mb = _typeBuilder.DefineMethod(name, attributes, returnType, parameterTypes);
_members.Add(mb);
_paramsByMember.Add(mb, parameterTypes);
return mb;
}
public void DefineMethod(string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes)
{
bool defaultReturnTypeAndParameters = returnType == null && parameterTypes == null;
if (callingConvention == CallingConventions.Standard)
{
if (defaultReturnTypeAndParameters)
{
// Use DefineMethod(string, MethodAttributes)
TypeBuilder type1 = Helpers.DynamicType(TypeAttributes.Public);
MethodBuilder method1 = type1.DefineMethod(name, attributes);
VerifyMethod(type1, method1, name, attributes, callingConvention, returnType, parameterTypes);
}
// Use DefineMethod(string, MethodAttributes, Type, Type[])
TypeBuilder type2 = Helpers.DynamicType(TypeAttributes.Public);
MethodBuilder method2 = type2.DefineMethod(name, attributes, returnType, parameterTypes);
VerifyMethod(type2, method2, name, attributes, callingConvention, returnType, parameterTypes);
}
if (defaultReturnTypeAndParameters)
{
// Use DefineMethod(string, MethodAttributes, CallingConventions)
TypeBuilder type3 = Helpers.DynamicType(TypeAttributes.Public);
MethodBuilder method3 = type3.DefineMethod(name, attributes, callingConvention);
VerifyMethod(type3, method3, name, attributes, callingConvention, returnType, parameterTypes);
}
// Use DefineMethod(string, MethodAttributes, CallingConventions, Type, Type[])
TypeBuilder type4 = Helpers.DynamicType(TypeAttributes.Public);
MethodBuilder method4 = type4.DefineMethod(name, attributes, callingConvention, returnType, parameterTypes);
VerifyMethod(type4, method4, name, attributes, callingConvention, returnType, parameterTypes);
}
private void Init(string name,
MethodAttributes attributes,
CallingConventions callingConvention,
Type?returnType,
Type[]?signature,
Type?owner,
Module?m,
bool skipVisibility,
bool transparentMethod)
{
ArgumentNullException.ThrowIfNull(name);
CheckConsistency(attributes, callingConvention);
// check and store the signature
if (signature != null)
{
m_parameterTypes = new RuntimeType[signature.Length];
for (int i = 0; i < signature.Length; i++)
{
if (signature[i] == null)
{
throw new ArgumentException(SR.Arg_InvalidTypeInSignature);
}
m_parameterTypes[i] = (signature[i].UnderlyingSystemType as RuntimeType) !;
if (m_parameterTypes[i] == null || m_parameterTypes[i] == typeof(void))
{
throw new ArgumentException(SR.Arg_InvalidTypeInSignature);
}
}
}
else
{
m_parameterTypes = Array.Empty <RuntimeType>();
}
// check and store the return value
m_returnType = (returnType == null) ? (RuntimeType)typeof(void) : (returnType.UnderlyingSystemType as RuntimeType) !;
if (m_returnType == null)
{
throw new NotSupportedException(SR.Arg_InvalidTypeInRetType);
}
if (transparentMethod)
{
Debug.Assert(owner == null && m == null, "owner and m cannot be set for transparent methods");
m_module = GetDynamicMethodsModule();
if (skipVisibility)
{
m_restrictedSkipVisibility = true;
}
}
else
{
Debug.Assert(m != null || owner != null, "Constructor should ensure that either m or owner is set");
Debug.Assert(m == null || !m.Equals(s_anonymouslyHostedDynamicMethodsModule), "The user cannot explicitly use this assembly");
Debug.Assert(m == null || owner == null, "m and owner cannot both be set");
if (m != null)
{
m_module = m.ModuleHandle.GetRuntimeModule(); // this returns the underlying module for all RuntimeModule and ModuleBuilder objects.
}
else
{
RuntimeType?rtOwner = null;
if (owner != null)
{
rtOwner = owner.UnderlyingSystemType as RuntimeType;
}
if (rtOwner != null)
{
if (rtOwner.HasElementType || rtOwner.ContainsGenericParameters ||
rtOwner.IsGenericParameter || rtOwner.IsInterface)
{
throw new ArgumentException(SR.Argument_InvalidTypeForDynamicMethod);
}
m_typeOwner = rtOwner;
m_module = rtOwner.GetRuntimeModule();
}
}
m_skipVisibility = skipVisibility;
}
// initialize remaining fields
m_ilGenerator = null;
m_fInitLocals = true;
m_methodHandle = null;
m_dynMethod = new RTDynamicMethod(this, name, attributes, callingConvention);
}
/// <summary>
/// Creates a method builder from an existing method info
/// </summary>
/// <param name="typeBuilder"></param>
/// <param name="methodInfo"></param>
/// <param name="attributes"></param>
/// <returns></returns>
public static MethodBuilder CreateMethod(this TypeBuilder typeBuilder, MethodInfo methodInfo, MethodAttributes attributes = MethodAttributes.Public)
{
Type[] parameterTypes = methodInfo.GetParameters().ToArray(p => p.ParameterType);
MethodBuilder methodBuilder = typeBuilder.DefineMethod(methodInfo.Name, attributes, methodInfo.ReturnType, parameterTypes);
return(methodBuilder);
}
public MethodDefinition(string name, MethodAttributes attrs, TypeReference returnType) :
this(name, attrs)
{
this.ReturnType.ReturnType = returnType;
}
public MethodEmitter CreateMethod(string name, MethodAttributes attrs, Type returnType,
params ArgumentReference[] argumentReferences)
{
Type[] argumentTypes = ArgumentsUtil.InitializeAndConvert(argumentReferences);
return(CreateMethod(name, attrs, returnType, argumentTypes));
}
public Method(MetadataReader r, MethodHandle h, MethodAttributes f)
{
_reader = r;
_handle = h;
_flags = f;
}
private Type EmitHelperClass(string HandlerName, EventInfo Info)
{
if (helperModule == null)
{
AssemblyName myAsmName = new AssemblyName();
myAsmName.Name = assemblyName + "DynamicAssembly";
asmBuilder = Thread.GetDomain().DefineDynamicAssembly(myAsmName, AssemblyBuilderAccess.Run);
helperModule = asmBuilder.DefineDynamicModule(assemblyName + "DynamicModule", true);
}
//////////////////////////////////////////////////////////////////////////
// Define Type
//////////////////////////////////////////////////////////////////////////
TypeBuilder helperTypeBld = helperModule.DefineType(HandlerName + "Helper", TypeAttributes.Public);
// Define fields
FieldBuilder typeField = helperTypeBld.DefineField("eventType", typeof(Type), FieldAttributes.Private);
FieldBuilder eventField = helperTypeBld.DefineField("CommonEvent", typeof(GenericEventHandlerDelegate), FieldAttributes.Private);
EventBuilder commonEvent = helperTypeBld.DefineEvent("CommonEvent", EventAttributes.None, typeof(GenericEventHandlerDelegate));
//////////////////////////////////////////////////////////////////////////
// Build Constructor
//////////////////////////////////////////////////////////////////////////
Type objType = Type.GetType("System.Object");
ConstructorInfo objCtor = objType.GetConstructor(new Type[0]);
// Build constructor with arguments (Type)
Type[] ctorParams = new Type[] { typeof(EventInfo) };
ConstructorBuilder ctor = helperTypeBld.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, ctorParams);
// Call constructor of base class
ILGenerator ctorIL = ctor.GetILGenerator();
ctorIL.Emit(OpCodes.Ldarg_0);
ctorIL.Emit(OpCodes.Call, objCtor);
// store first argument to typeField
ctorIL.Emit(OpCodes.Ldarg_0);
ctorIL.Emit(OpCodes.Ldarg_1);
ctorIL.Emit(OpCodes.Stfld, typeField);
// return
ctorIL.Emit(OpCodes.Ret);
// Now constructor is finished!
//////////////////////////////////////////////////////////////////////////
// Build customized event handler
//////////////////////////////////////////////////////////////////////////
string eventName = Info.Name;
Type ehType = Info.EventHandlerType;
MethodInfo mi = ehType.GetMethod("Invoke");
ParameterInfo[] eventParams = mi.GetParameters();
// Build the type list of the parameter
int paramCount = eventParams.Length;
Type[] invokeParams = new Type[paramCount];
for (int i = 0; i < paramCount; i++)
{
invokeParams[i] = eventParams[i].ParameterType;
}
string methodName = "CustomEventHandler";
MethodAttributes attr = MethodAttributes.Public | MethodAttributes.HideBySig;
MethodBuilder invokeMthd = helperTypeBld.DefineMethod(methodName, attr, typeof(void), invokeParams);
// A ILGenerator can now be spawned, attached to the MethodBuilder.
ILGenerator ilGen = invokeMthd.GetILGenerator();
// Create Label before return
Label endOfMethod = ilGen.DefineLabel();
// Create a local variable of type 'string', and call it 'args'
LocalBuilder localObj = ilGen.DeclareLocal(typeof(object[]));
localObj.SetLocalSymInfo("args"); // Provide name for the debugger.
// create object array of proper length
ilGen.Emit(OpCodes.Ldc_I4, paramCount);
ilGen.Emit(OpCodes.Newarr, typeof(object));
ilGen.Emit(OpCodes.Stloc_0);
// Now put all arguments in the object array
for (int i = 0; i < paramCount; i++)
{
byte i1b = Convert.ToByte(i + 1);
ilGen.Emit(OpCodes.Ldloc_0);
ilGen.Emit(OpCodes.Ldc_I4, i);
ilGen.Emit(OpCodes.Ldarg_S, i1b);
// Is argument value type?
if (invokeParams[i].IsValueType)
{
// Box the value type
ilGen.Emit(OpCodes.Box, invokeParams[i]);
}
// Put the argument in the object array
ilGen.Emit(OpCodes.Stelem_Ref);
}
// raise common event
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldfld, eventField);
ilGen.Emit(OpCodes.Brfalse_S, endOfMethod);
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldfld, eventField);
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldfld, typeField);
ilGen.Emit(OpCodes.Ldloc_0);
MethodInfo raiseEventMethod = typeof(GenericEventHandlerDelegate).GetMethod("Invoke", BindingFlags.Public | BindingFlags.Instance);
if (raiseEventMethod == null)
{
throw new ApplicationException("CommonEventHandlerDlg:Invoke not found");
}
ilGen.Emit(OpCodes.Callvirt, raiseEventMethod);
// return
ilGen.MarkLabel(endOfMethod);
ilGen.Emit(OpCodes.Ret);
//////////////////////////////////////////////////////////////////////////
// add_CommonEvent
//////////////////////////////////////////////////////////////////////////
methodName = "add_CommonEvent";
attr = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig;
invokeParams = new Type[1];
invokeParams[0] = typeof(GenericEventHandlerDelegate);
MethodBuilder addMethod = helperTypeBld.DefineMethod(methodName, attr, typeof(void), invokeParams);
ilGen = addMethod.GetILGenerator();
// define code
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldfld, eventField);
ilGen.Emit(OpCodes.Ldarg_1);
Type[] combineTypes = new Type[] { typeof(Delegate), typeof(Delegate) };
MethodInfo combineMtd = typeof(Delegate).GetMethod("Combine", combineTypes);
if (combineMtd == null)
{
throw new ApplicationException("Delegate:Combine not found");
}
ilGen.Emit(OpCodes.Call, combineMtd);
ilGen.Emit(OpCodes.Castclass, typeof(GenericEventHandlerDelegate));
ilGen.Emit(OpCodes.Stfld, eventField);
ilGen.Emit(OpCodes.Ret);
// Set add method
commonEvent.SetAddOnMethod(addMethod);
//////////////////////////////////////////////////////////////////////////
// remove_CommonEvent
//////////////////////////////////////////////////////////////////////////
methodName = "remove_CommonEvent";
attr = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig;
invokeParams = new Type[1];
invokeParams[0] = typeof(GenericEventHandlerDelegate);
MethodBuilder removeMethod = helperTypeBld.DefineMethod(methodName, attr, typeof(void), invokeParams);
ilGen = removeMethod.GetILGenerator();
// define code
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldarg_0);
ilGen.Emit(OpCodes.Ldfld, eventField);
ilGen.Emit(OpCodes.Ldarg_1);
MethodInfo removeMtd = typeof(Delegate).GetMethod("Remove", combineTypes);
if (removeMtd == null)
{
throw new ApplicationException("Delegate:Remove not found");
}
ilGen.Emit(OpCodes.Call, removeMtd);
ilGen.Emit(OpCodes.Castclass, typeof(GenericEventHandlerDelegate));
ilGen.Emit(OpCodes.Stfld, eventField);
ilGen.Emit(OpCodes.Ret);
// Set remove method
commonEvent.SetRemoveOnMethod(removeMethod);
//////////////////////////////////////////////////////////////////////////
// Now event handler is finished!
//////////////////////////////////////////////////////////////////////////
return(helperTypeBld.CreateType());
}
public CompletionItem GetCompletion() => MethodAttributes.GetFunctionCompletion(this);
public static void Main()
{
// An assembly consists of one or more modules, each of which
// contains zero or more types. This code creates a single-module
// assembly, the most common case. The module contains one type,
// named "MyDynamicType", that has a private field, a property
// that gets and sets the private field, constructors that
// initialize the private field, and a method that multiplies
// a user-supplied number by the private field value and returns
// the result. In C# the type might look like this:
/*
* public class MyDynamicType
* {
* private int m_number;
*
* public MyDynamicType() : this(42) {}
* public MyDynamicType(int initNumber)
* {
*
* m_number = initNumber;
* }
*
* public int Number
* {
* get { return m_number; }
* set { m_number = value; }
* }
*
* public int MyMethod(int multiplier)
* {
* return m_number * multiplier;
* }
* }
*/
AssemblyName aName = new AssemblyName("DynamicAssemblyExample");
AssemblyBuilder ab =
AssemblyBuilder.DefineDynamicAssembly(
aName,
AssemblyBuilderAccess.RunAndSave);
// For a single-module assembly, the module name is usually
// the assembly name plus an extension.
ModuleBuilder mb =
ab.DefineDynamicModule(aName.Name, aName.Name + ".dll");
TypeBuilder tb = mb.DefineType(
"MyDynamicType",
TypeAttributes.Public);
// Add a private field of type int (Int32).
FieldBuilder fbNumber = tb.DefineField(
"m_number",
typeof(int),
FieldAttributes.Private);
// Define a constructor that takes an integer argument and
// stores it in the private field.
Type[] parameterTypes = { typeof(int) };
ConstructorBuilder ctor1 = tb.DefineConstructor(
MethodAttributes.Public,
CallingConventions.Standard,
parameterTypes);
ILGenerator ctor1IL = ctor1.GetILGenerator();
// For a constructor, argument zero is a reference to the new
// instance. Push it on the stack before calling the base
// class constructor. Specify the default constructor of the
// base class (System.Object) by passing an empty array of
// types (Type.EmptyTypes) to GetConstructor.
// ldarg.0
// call instance void [mscorlib]System.Object::.ctor()
// ldarg.0
// ldarg.1
// stfld int32 MyDynamicType1::m_number
// ret
ctor1IL.Emit(OpCodes.Ldarg_0);
ctor1IL.Emit(OpCodes.Call,
typeof(object).GetConstructor(Type.EmptyTypes));
// Push the instance on the stack before pushing the argument
// that is to be assigned to the private field m_number.
ctor1IL.Emit(OpCodes.Ldarg_0);
ctor1IL.Emit(OpCodes.Ldarg_1);
ctor1IL.Emit(OpCodes.Stfld, fbNumber);
ctor1IL.Emit(OpCodes.Ret);
// Define a default constructor that supplies a default value
// for the private field. For parameter types, pass the empty
// array of types or pass null.
ConstructorBuilder ctor0 = tb.DefineConstructor(
MethodAttributes.Public,
CallingConventions.Standard,
Type.EmptyTypes);
// ldarg.0
// ldc.i4.s 42
// call instance void MyDynamicType1::.ctor(int32)
// ret
ILGenerator ctor0IL = ctor0.GetILGenerator();
// For a constructor, argument zero is a reference to the new
// instance. Push it on the stack before pushing the default
// value on the stack, then call constructor ctor1.
ctor0IL.Emit(OpCodes.Ldarg_0);
ctor0IL.Emit(OpCodes.Ldc_I4_S, 42);
ctor0IL.Emit(OpCodes.Call, ctor1);
ctor0IL.Emit(OpCodes.Ret);
// Define a property named Number that gets and sets the private
// field.
//
// The last argument of DefineProperty is null, because the
// property has no parameters. (If you don't specify null, you must
// specify an array of Type objects. For a parameterless property,
// use the built-in array with no elements: Type.EmptyTypes)
PropertyBuilder pbNumber = tb.DefineProperty(
"Number",
PropertyAttributes.HasDefault,
typeof(int),
null);
// The property "set" and property "get" methods require a special
// set of attributes.
MethodAttributes getSetAttr = MethodAttributes.Public |
MethodAttributes.SpecialName | MethodAttributes.HideBySig;
// Define the "get" accessor method for Number. The method returns
// an integer and has no arguments. (Note that null could be
// used instead of Types.EmptyTypes)
MethodBuilder mbNumberGetAccessor = tb.DefineMethod(
"get_Number",
getSetAttr,
typeof(int),
Type.EmptyTypes);
ILGenerator numberGetIL = mbNumberGetAccessor.GetILGenerator();
// For an instance property, argument zero is the instance. Load the
// instance, then load the private field and return, leaving the
// field value on the stack.
numberGetIL.Emit(OpCodes.Ldarg_0);
numberGetIL.Emit(OpCodes.Ldfld, fbNumber);
numberGetIL.Emit(OpCodes.Ret);
// Define the "set" accessor method for Number, which has no return
// type and takes one argument of type int (Int32).
MethodBuilder mbNumberSetAccessor = tb.DefineMethod(
"set_Number",
getSetAttr,
null,
new Type[] { typeof(int) });
ILGenerator numberSetIL = mbNumberSetAccessor.GetILGenerator();
// Load the instance and then the numeric argument, then store the
// argument in the field.
numberSetIL.Emit(OpCodes.Ldarg_0);
numberSetIL.Emit(OpCodes.Ldarg_1);
numberSetIL.Emit(OpCodes.Stfld, fbNumber);
numberSetIL.Emit(OpCodes.Ret);
// Last, map the "get" and "set" accessor methods to the
// PropertyBuilder. The property is now complete.
pbNumber.SetGetMethod(mbNumberGetAccessor);
pbNumber.SetSetMethod(mbNumberSetAccessor);
// Define a method that accepts an integer argument and returnsF
// the product of that integer and the private field m_number. This
// time, the array of parameter types is created on the fly.
MethodBuilder meth = tb.DefineMethod(
"MyMethod",
MethodAttributes.Public,
typeof(int),
new Type[] { typeof(int) });
ILGenerator methIL = meth.GetILGenerator();
// To retrieve the private instance field, load the instance it
// belongs to (argument zero). After loading the field, load the
// argument one and then multiply. Return from the method with
// the return value (the product of the two numbers) on the
// execution stack.
methIL.Emit(OpCodes.Ldarg_0);
methIL.Emit(OpCodes.Ldfld, fbNumber);
methIL.Emit(OpCodes.Ldarg_1);
methIL.Emit(OpCodes.Mul);
methIL.Emit(OpCodes.Ret);
// Finish the type.
Type t = tb.CreateType();
// The following line saves the single-module assembly. This
// requires AssemblyBuilderAccess to include Save. You can now
// type "ildasm MyDynamicAsm.dll" at the command prompt, and
// examine the assembly. You can also write a program that has
// a reference to the assembly, and use the MyDynamicType type.
//
String assemblyName = aName.Name + ".dll";
Console.WriteLine("Creating " + assemblyName);
ab.Save(assemblyName);
// Because AssemblyBuilderAccess includes Run, the code can be
// executed immediately. Start by getting reflection objects for
// the method and the property.
MethodInfo mi = t.GetMethod("MyMethod");
PropertyInfo pi = t.GetProperty("Number");
// Create an instance of MyDynamicType using the default
// constructor.
object o1 = Activator.CreateInstance(t);
// Display the value of the property, then change it to 127 and
// display it again. Use null to indicate that the property
// has no index.
Console.WriteLine("o1.Number: {0}", pi.GetValue(o1, null));
pi.SetValue(o1, 127, null);
Console.WriteLine("o1.Number: {0}", pi.GetValue(o1, null));
// Call MyMethod, passing 22, and display the return value, 22
// times 127. Arguments must be passed as an array, even when
// there is only one.
object[] arguments = { 22 };
Console.WriteLine("o1.MyMethod(22): {0}",
mi.Invoke(o1, arguments));
// Create an instance of MyDynamicType using the constructor
// that specifies m_Number. The constructor is identified by
// matching the types in the argument array. In this case,
// the argument array is created on the fly. Display the
// property value.
object o2 = Activator.CreateInstance(t,
new object[] { 5280 });
Console.WriteLine("o2.Number: {0}", pi.GetValue(o2, null));
}
private static void CreateAutoImplementedProperty(TypeBuilder builder, string propertyName, Type propertyType)
{
const string PrivateFieldPrefix = "m_";
const string GetterPrefix = "get_";
const string SetterPrefix = "set_";
// Generate the field.
FieldBuilder fieldBuilder = builder.DefineField(
string.Concat(
PrivateFieldPrefix, propertyName),
propertyType,
FieldAttributes.Private);
// Generate the property
PropertyBuilder propertyBuilder = builder.DefineProperty(
propertyName,
System.Reflection.PropertyAttributes.HasDefault,
propertyType, null);
// Property getter and setter attributes.
MethodAttributes propertyMethodAttributes = MethodAttributes.Public
| MethodAttributes.SpecialName
| MethodAttributes.HideBySig;
// Define the getter method.
MethodBuilder getterMethod = builder.DefineMethod(
string.Concat(
GetterPrefix, propertyName),
propertyMethodAttributes,
propertyType,
Type.EmptyTypes);
// Emit the IL code.
// ldarg.0
// ldfld,_field
// ret
ILGenerator getterILCode = getterMethod.GetILGenerator();
getterILCode.Emit(OpCodes.Ldarg_0);
getterILCode.Emit(OpCodes.Ldfld, fieldBuilder);
getterILCode.Emit(OpCodes.Ret);
// Define the setter method.
MethodBuilder setterMethod = builder.DefineMethod(
string.Concat(SetterPrefix, propertyName),
propertyMethodAttributes,
null,
new Type[] { propertyType });
// Emit the IL code.
// ldarg.0
// ldarg.1
// stfld,_field
// ret
ILGenerator setterILCode = setterMethod.GetILGenerator();
setterILCode.Emit(OpCodes.Ldarg_0);
setterILCode.Emit(OpCodes.Ldarg_1);
setterILCode.Emit(OpCodes.Stfld, fieldBuilder);
setterILCode.Emit(OpCodes.Ret);
propertyBuilder.SetGetMethod(getterMethod);
propertyBuilder.SetSetMethod(setterMethod);
}
/// <summary>
/// Adds a forwarding method to the proxy based on the passed <see cref="MethodInfo"/>, using the passed <see cref="MethodAttributes"/>.
/// </summary>
/// <remarks>
/// Note that this works for interface methods only, if the <see cref="MethodInfo"/> comes from the interface, not the
/// type implementing the interface.
/// </remarks>
public IMethodEmitter AddForwardingMethodFromClassOrInterfaceMethodInfoCopy(MethodInfo methodInfo, MethodAttributes methodAttributes)
{
ArgumentUtility.CheckNotNull("methodInfo", methodInfo);
IMethodEmitter methodEmitter;
if (methodInfo.DeclaringType.IsInterface)
{
methodEmitter = _classEmitter.CreateMethodOverrideOrInterfaceImplementation(
methodInfo, true, methodAttributes & MethodAttributes.MemberAccessMask);
}
else
{
// Note: Masking the attributes with MethodAttributes.MemberAccessMask below, would remove
// desired attributes such as Final, Virtual and HideBySig.
methodEmitter = _classEmitter.CreateMethod(methodInfo.Name, methodAttributes, methodInfo);
}
ImplementForwardingMethod(methodInfo, methodEmitter);
// TODO: Test return type
return(methodEmitter);
}
/// <summary>
/// Creates and returns a MethodBuilder
/// </summary>
internal static MethodBuilder CompileLambda(LambdaExpression lambda, TypeBuilder type, MethodAttributes attributes, bool emitDebugSymbols)
{
// 1. Create signature
List <Type> types;
List <string> names;
string lambdaName;
Type returnType;
ComputeSignature(lambda, out types, out names, out lambdaName, out returnType);
// 2. Bind lambda
AnalyzedTree tree = AnalyzeLambda(ref lambda);
// 3. Create lambda compiler
LambdaCompiler c = CreateStaticCompiler(
tree,
lambda,
type,
lambda.Name ?? "lambda_method", // don't use generated name
attributes,
returnType,
types,
names,
false, // dynamicMethod
emitDebugSymbols
);
// 4. Emit
c.EmitLambdaBody(null);
return((MethodBuilder)c._method);
}
public MethodEmitter CreateMethod(string name, MethodAttributes attrs, Type returnType)
{
return(CreateMethod(name, attrs, returnType, Type.EmptyTypes));
}
/// <summary>
/// 生成代理类型的接口实现方法
/// </summary>
/// <param name="builder">类型生成器</param>
/// <param name="apiMethods">接口方法集合</param>
/// <param name="fieldInterceptor">拦截器字段</param>
/// <param name="fieldApiMethods">接口方法集合字段</param>
private static void BuildMethods(TypeBuilder builder, MethodInfo[] apiMethods, FieldBuilder fieldInterceptor, FieldBuilder fieldApiMethods)
{
const MethodAttributes implementAttribute = MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.Final | MethodAttributes.NewSlot | MethodAttributes.HideBySig;
for (var i = 0; i < apiMethods.Length; i++)
{
var apiMethod = apiMethods[i];
var apiParameters = apiMethod.GetParameters();
var parameterTypes = apiParameters.Select(p => p.ParameterType).ToArray();
var iL = builder
.DefineMethod(apiMethod.Name, implementAttribute, CallingConventions.Standard, apiMethod.ReturnType, parameterTypes)
.GetILGenerator();
// this.interceptor
iL.Emit(OpCodes.Ldarg_0);
iL.Emit(OpCodes.Ldfld, fieldInterceptor);
// 加载target参数
iL.Emit(OpCodes.Ldarg_0);
// 加载method参数 this.apiMethods[i]
iL.Emit(OpCodes.Ldarg_0);
iL.Emit(OpCodes.Ldfld, fieldApiMethods);
iL.Emit(OpCodes.Ldc_I4, i);
iL.Emit(OpCodes.Ldelem_Ref);
// var parameters = new object[parameters.Length]
var parameters = iL.DeclareLocal(typeof(object[]));
iL.Emit(OpCodes.Ldc_I4, apiParameters.Length);
iL.Emit(OpCodes.Newarr, typeof(object));
iL.Emit(OpCodes.Stloc, parameters);
for (var j = 0; j < apiParameters.Length; j++)
{
iL.Emit(OpCodes.Ldloc, parameters);
iL.Emit(OpCodes.Ldc_I4, j);
iL.Emit(OpCodes.Ldarg, j + 1);
var parameterType = parameterTypes[j];
if (parameterType.GetTypeInfo().IsValueType || parameterType.IsGenericParameter)
{
iL.Emit(OpCodes.Box, parameterType);
}
iL.Emit(OpCodes.Stelem_Ref);
}
// 加载parameters参数
iL.Emit(OpCodes.Ldloc, parameters);
// Intercep(this, method, parameters)
iL.Emit(OpCodes.Callvirt, interceptMethod);
if (apiMethod.ReturnType == typeof(void))
{
iL.Emit(OpCodes.Pop);
}
iL.Emit(OpCodes.Castclass, apiMethod.ReturnType);
iL.Emit(OpCodes.Ret);
}
}
private MethodAttributes ModifyAccessorAttributesForExplicitInterfaceProperty(MethodAttributes attributes)
{
return(attributes & ~MethodAttributes.Public | MethodAttributes.Private);
}
private static bool CanAccessMember(this MetadataType currentType, TypeDesc targetType, MethodAttributes memberVisibility, TypeDesc instance)
{
if (instance == null)
{
instance = currentType;
}
// Check access to class defining member
if (!currentType.CanAccess(targetType))
{
return(false);
}
var targetTypeDef = (MetadataType)targetType.GetTypeDefinition();
if (memberVisibility == MethodAttributes.Public)
{
return(true);
}
// This is module-scope checking, to support C++ file & function statics.
if (memberVisibility == MethodAttributes.PrivateScope)
{
return(currentType.Module == targetTypeDef.Module);
}
if (memberVisibility == MethodAttributes.Assembly)
{
return(currentType.Module == targetTypeDef.Module || targetTypeDef.Module.GrantsFriendAccessTo(currentType.Module));
}
if (memberVisibility == MethodAttributes.FamANDAssem)
{
if (currentType.Module != targetTypeDef.Module && !targetTypeDef.Module.GrantsFriendAccessTo(currentType.Module))
{
return(false);
}
}
// Nested classes can access all members of their parent class.
do
{
// Classes have access to all of their own members
if (currentType == targetTypeDef)
{
return(true);
}
switch (memberVisibility)
{
case MethodAttributes.FamORAssem:
if (currentType.Module == targetTypeDef.Module || targetTypeDef.Module.GrantsFriendAccessTo(currentType.Module))
{
return(true);
}
// Check if current class is subclass of target
if (CanAccessFamily(currentType, targetTypeDef, instance))
{
return(true);
}
break;
case MethodAttributes.Family:
case MethodAttributes.FamANDAssem:
// Assembly acces was already checked earlier, so only need to check family access
if (CanAccessFamily(currentType, targetTypeDef, instance))
{
return(true);
}
break;
case MethodAttributes.Private:
break; // Already handled by loop
default:
Debug.Assert(false);
break;
}
var containingType = currentType.ContainingType;
if (containingType != null)
{
currentType = (MetadataType)containingType.GetTypeDefinition();
}
else
{
currentType = null;
}
} while (currentType != null);
return(false);
}
internal MethodBuilder(string name, MethodAttributes attributes, CallingConventions callingConvention,
Type?returnType, Type[]?returnTypeRequiredCustomModifiers, Type[]?returnTypeOptionalCustomModifiers,
Type[]?parameterTypes, Type[][]?parameterTypeRequiredCustomModifiers, Type[][]?parameterTypeOptionalCustomModifiers,
ModuleBuilder mod, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)] TypeBuilder type)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (name.Length == 0)
{
throw new ArgumentException(SR.Argument_EmptyName, nameof(name));
}
if (name[0] == '\0')
{
throw new ArgumentException(SR.Argument_IllegalName, nameof(name));
}
if (mod == null)
{
throw new ArgumentNullException(nameof(mod));
}
if (parameterTypes != null)
{
foreach (Type t in parameterTypes)
{
if (t == null)
{
throw new ArgumentNullException(nameof(parameterTypes));
}
}
}
m_strName = name;
m_module = mod;
m_containingType = type;
m_returnType = returnType ?? typeof(void);
if ((attributes & MethodAttributes.Static) == 0)
{
// turn on the has this calling convention
callingConvention |= CallingConventions.HasThis;
}
else if ((attributes & MethodAttributes.Virtual) != 0)
{
// A method can't be both static and virtual
throw new ArgumentException(SR.Arg_NoStaticVirtual);
}
#if !FEATURE_DEFAULT_INTERFACES
if ((attributes & MethodAttributes.SpecialName) != MethodAttributes.SpecialName)
{
if ((type.Attributes & TypeAttributes.Interface) == TypeAttributes.Interface)
{
// methods on interface have to be abstract + virtual except special name methods such as type initializer
if ((attributes & (MethodAttributes.Abstract | MethodAttributes.Virtual)) !=
(MethodAttributes.Abstract | MethodAttributes.Virtual) &&
(attributes & MethodAttributes.Static) == 0)
{
throw new ArgumentException(SR.Argument_BadAttributeOnInterfaceMethod);
}
}
}
#endif
m_callingConvention = callingConvention;
if (parameterTypes != null)
{
m_parameterTypes = new Type[parameterTypes.Length];
Array.Copy(parameterTypes, m_parameterTypes, parameterTypes.Length);
}
else
{
m_parameterTypes = null;
}
m_returnTypeRequiredCustomModifiers = returnTypeRequiredCustomModifiers;
m_returnTypeOptionalCustomModifiers = returnTypeOptionalCustomModifiers;
m_parameterTypeRequiredCustomModifiers = parameterTypeRequiredCustomModifiers;
m_parameterTypeOptionalCustomModifiers = parameterTypeOptionalCustomModifiers;
// m_signature = SignatureHelper.GetMethodSigHelper(mod, callingConvention,
// returnType, returnTypeRequiredCustomModifiers, returnTypeOptionalCustomModifiers,
// parameterTypes, parameterTypeRequiredCustomModifiers, parameterTypeOptionalCustomModifiers);
m_iAttributes = attributes;
m_bIsBaked = false;
m_fInitLocals = true;
m_localSymInfo = new LocalSymInfo();
m_ubBody = null;
m_ilGenerator = null;
// Default is managed IL. Manged IL has bit flag 0x0020 set off
m_dwMethodImplFlags = MethodImplAttributes.IL;
}
public static MethodAttributes MethodAttr(Modifiers mod_flags)
{
MethodAttributes ma = MethodAttributes.HideBySig;
switch (mod_flags & Modifiers.AccessibilityMask)
{
case Modifiers.PUBLIC:
ma |= MethodAttributes.Public;
break;
case Modifiers.PRIVATE:
ma |= MethodAttributes.Private;
break;
case Modifiers.PROTECTED | Modifiers.INTERNAL:
ma |= MethodAttributes.FamORAssem;
break;
case Modifiers.PROTECTED:
ma |= MethodAttributes.Family;
break;
case Modifiers.INTERNAL:
ma |= MethodAttributes.Assembly;
break;
default:
throw new NotImplementedException(mod_flags.ToString());
}
if ((mod_flags & Modifiers.STATIC) != 0)
{
ma |= MethodAttributes.Static;
}
if ((mod_flags & Modifiers.ABSTRACT) != 0)
{
ma |= MethodAttributes.Abstract | MethodAttributes.Virtual;
}
if ((mod_flags & Modifiers.SEALED) != 0)
{
ma |= MethodAttributes.Final;
}
if ((mod_flags & Modifiers.VIRTUAL) != 0)
{
ma |= MethodAttributes.Virtual;
}
if ((mod_flags & Modifiers.OVERRIDE) != 0)
{
ma |= MethodAttributes.Virtual;
}
else
{
if ((ma & MethodAttributes.Virtual) != 0)
{
ma |= MethodAttributes.NewSlot;
}
}
return(ma);
}
/// <summary>
/// Is the given visibility value set?
/// </summary>
private bool IsVisibility(MethodAttributes value)
{
return(((Attributes) & MethodAttributes.MemberAccessMask) == value);
}
internal static CodeMethod DefineMethod(CodeClass cls, string name, MethodAttributes attributes, Type returnType, Type[] parameterTypes)
{
return(new CodeMethod(cls, name, attributes, returnType, parameterTypes));
}
private Type GetObjectType(List <string> vars)
{
AssemblyName assemblyName = new AssemblyName();
assemblyName.Name = "tmpAssembly";
AssemblyBuilder assemblyBuilder = Thread.GetDomain().DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
ModuleBuilder module = assemblyBuilder.DefineDynamicModule("tmpModule");
// create a new type builder
TypeBuilder typeBuilder = module.DefineType("TmpClass", TypeAttributes.Public | TypeAttributes.Class);
//For tracking and fixing duplicate property names. Duplicate properties cant be declared in an assembly(class)
List <string> varlist = new List <string>();
int counter = 1;
foreach (string var in vars)
{
Type type = typeof(string);
string propertyName = var.Replace(".", "");
#region Duplicate property fixing logic
if (varlist.Contains(propertyName))
{
propertyName = propertyName + counter.ToString();
counter++;
}
varlist.Add(propertyName);
#endregion
// Generate a private field
FieldBuilder field = typeBuilder.DefineField("_" + propertyName, typeof(string), FieldAttributes.Private);
// Generate a public property
PropertyBuilder property =
typeBuilder.DefineProperty(propertyName,
PropertyAttributes.None,
type,
new Type[] { type });
// The property set and property get methods require a special set of attributes:
MethodAttributes GetSetAttr =
MethodAttributes.Public |
MethodAttributes.HideBySig;
// Define the "get" accessor method for current private field.
MethodBuilder currGetPropMthdBldr =
typeBuilder.DefineMethod("get_value",
GetSetAttr,
type,
Type.EmptyTypes);
// Intermediate Language stuff...
ILGenerator currGetIL = currGetPropMthdBldr.GetILGenerator();
currGetIL.Emit(OpCodes.Ldarg_0);
currGetIL.Emit(OpCodes.Ldfld, field);
currGetIL.Emit(OpCodes.Ret);
// Define the "set" accessor method for current private field.
MethodBuilder currSetPropMthdBldr =
typeBuilder.DefineMethod("set_value",
GetSetAttr,
null,
new Type[] { type });
// Again some Intermediate Language stuff...
ILGenerator currSetIL = currSetPropMthdBldr.GetILGenerator();
currSetIL.Emit(OpCodes.Ldarg_0);
currSetIL.Emit(OpCodes.Ldarg_1);
currSetIL.Emit(OpCodes.Stfld, field);
currSetIL.Emit(OpCodes.Ret);
// Last, we must map the two methods created above to our PropertyBuilder to
// their corresponding behaviors, "get" and "set" respectively.
property.SetGetMethod(currGetPropMthdBldr);
property.SetSetMethod(currSetPropMthdBldr);
}
Type generetedType = typeBuilder.CreateType();
return(generetedType);
}
public CompiledMethod(CompiledClass parent, string name, BracketFragment parameterBlock, BracketFragment codeBlock, TypeFragment retType, bool isPublic)
{
Name = name;
Parent = parent;
CodeBlock = codeBlock;
Script = Parent.Script;
ParameterBlock = parameterBlock;
Type returnType = null;
if (retType != null)
{
returnType = retType.FindType(Script);
if (returnType == null)
{
Error("Type '" + retType.Value + "' was not found.");
}
}
string methodName = Name;
MethodAttributes attrib = isPublic?MethodAttributes.Public:MethodAttributes.Private;
if (methodName == "new")
{
methodName = ".ctor";
attrib |= MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName;
}
// Does the parent base type define this method?
// If so, use it's name.
Type baseType = Parent.Builder.BaseType;
// Parse the parameter set right away:
ParseParameters();
MethodInfo mInfo = Types.GetOverload(baseType.GetMethods(), Name, ParameterTypes, true);
if (mInfo != null)
{
methodName = mInfo.Name;
attrib |= MethodAttributes.Virtual | MethodAttributes.HideBySig; //|MethodAttributes.NewSlot;
}
bool isVoid = Types.IsVoid(returnType);
if (isVoid)
{
returnType = typeof(void);
}
Builder = Parent.Builder.DefineMethod(
methodName,
attrib,
returnType,
null
);
ApplyParameters();
ILStream = new NitroIL(Builder.GetILGenerator());
EndOfMethod = ILStream.DefineLabel();
if (!isVoid)
{
ReturnBay = ILStream.DeclareLocal(returnType);
}
}
public static CodeMethod DefineConstructor(CodeClass cls, MethodAttributes attributes, Type[] parameterTypes)
{
return(new CodeMethod(cls, attributes, parameterTypes));
}
public MethodBuilder DefinePInvokeMethod(string name, string dllName, string entryName, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, CallingConvention nativeCallConv, CharSet nativeCharSet)
{
return(DefinePInvokeMethod(name, dllName, entryName, attributes, callingConvention, returnType, null, null, parameterTypes, null, null, nativeCallConv, nativeCharSet));
}
private static ConstructorInfo FromBinary(
Reader reader,
System.Type instanceContainer,
System.Type exportContainer,
IEnumerable <RuntimeImport> imports
)
{
if (reader.ReadUInt32() != Module.Magic)
{
throw new ModuleLoadException("File preamble magic value is incorrect.", 0);
}
switch (reader.ReadUInt32())
{
case 0x1: //First release
case 0xd: //Final pre-release, binary format is identical with first release.
break;
default:
throw new ModuleLoadException("Unsupported version, only version 0x1 and 0xd are accepted.", 4);
}
uint memoryPagesMinimum = 0;
uint memoryPagesMaximum = 0;
Signature[] signatures = null;
Signature[] functionSignatures = null;
KeyValuePair <string, uint>[] exportedFunctions = null;
var previousSection = Section.None;
var module = AssemblyBuilder.DefineDynamicAssembly(
new AssemblyName("CompiledWebAssembly"),
AssemblyBuilderAccess.RunAndCollect
)
.DefineDynamicModule("CompiledWebAssembly")
;
const TypeAttributes classAttributes =
TypeAttributes.Public |
TypeAttributes.Class |
TypeAttributes.BeforeFieldInit
;
const MethodAttributes constructorAttributes =
MethodAttributes.Public |
MethodAttributes.HideBySig |
MethodAttributes.SpecialName |
MethodAttributes.RTSpecialName
;
const MethodAttributes internalFunctionAttributes =
MethodAttributes.Assembly |
MethodAttributes.Static |
MethodAttributes.HideBySig
;
const MethodAttributes exportedFunctionAttributes =
MethodAttributes.Public |
MethodAttributes.Virtual |
MethodAttributes.Final |
MethodAttributes.HideBySig
;
var exportsBuilder = module.DefineType("CompiledExports", classAttributes, exportContainer);
FieldBuilder memory = null;
ILGenerator instanceConstructorIL;
{
var instanceConstructor = exportsBuilder.DefineConstructor(constructorAttributes, CallingConventions.Standard, System.Type.EmptyTypes);
instanceConstructorIL = instanceConstructor.GetILGenerator();
{
var usableConstructor = exportContainer.GetTypeInfo().DeclaredConstructors.FirstOrDefault(c => c.GetParameters().Length == 0);
if (usableConstructor != null)
{
instanceConstructorIL.Emit(OpCodes.Ldarg_0);
instanceConstructorIL.Emit(OpCodes.Call, usableConstructor);
}
}
}
var exports = exportsBuilder.AsType();
var importedFunctions = 0;
MethodInfo[] internalFunctions = null;
Indirect[] functionElements = null;
GlobalInfo[] globalGetters = null;
GlobalInfo[] globalSetters = null;
CompilationContext context = null;
MethodInfo startFunction = null;
while (reader.TryReadVarUInt7(out var id)) //At points where TryRead is used, the stream can safely end.
{
var payloadLength = reader.ReadVarUInt32();
if (id != 0 && (Section)id < previousSection)
{
throw new ModuleLoadException($"Sections out of order; section {(Section)id} encounterd after {previousSection}.", reader.Offset);
}
switch ((Section)id)
{
case Section.None:
{
var preNameOffset = reader.Offset;
reader.ReadString(reader.ReadVarUInt32()); //Name
reader.ReadBytes(payloadLength - checked ((uint)(reader.Offset - preNameOffset))); //Content
}
break;
case Section.Type:
{
signatures = new Signature[reader.ReadVarUInt32()];
for (var i = 0; i < signatures.Length; i++)
{
signatures[i] = new Signature(reader, (uint)i);
}
}
break;
case Section.Import:
{
if (imports == null)
{
imports = Enumerable.Empty <RuntimeImport>();
}
var importsByName = imports.ToDictionary(import => new Tuple <string, string>(import.ModuleName, import.FieldName));
var count = reader.ReadVarUInt32();
var functionImports = new List <MethodInfo>(checked ((int)count));
for (var i = 0; i < count; i++)
{
var moduleName = reader.ReadString(reader.ReadVarUInt32());
var fieldName = reader.ReadString(reader.ReadVarUInt32());
if (!importsByName.TryGetValue(new Tuple <string, string>(moduleName, fieldName), out var import))
{
throw new CompilerException($"Import not found for {moduleName}::{fieldName}.");
}
var kind = (ExternalKind)reader.ReadByte();
switch (kind)
{
case ExternalKind.Function:
var typeIndex = reader.ReadVarUInt32();
if (!(import is FunctionImport functionImport))
{
throw new CompilerException($"{moduleName}::{fieldName} is expected to be a function, but provided import was not.");
}
if (!signatures[typeIndex].Equals(functionImport.Type))
{
throw new CompilerException($"{moduleName}::{fieldName} did not match the required type signature.");
}
functionImports.Add(functionImport.Method);
break;
case ExternalKind.Table:
case ExternalKind.Memory:
case ExternalKind.Global:
throw new ModuleLoadException($"Imported external kind of {kind} is not currently supported.", reader.Offset);
default:
throw new ModuleLoadException($"Imported external kind of {kind} is not recognized.", reader.Offset);
}
}
importedFunctions = functionImports.Count;
internalFunctions = functionImports.ToArray();
}
break;
case Section.Function:
{
functionSignatures = new Signature[reader.ReadVarUInt32()];
var importedFunctionCount = internalFunctions == null ? 0 : internalFunctions.Length;
if (importedFunctionCount != 0)
{
Array.Resize(ref internalFunctions, checked (importedFunctionCount + functionSignatures.Length));
}
else
{
internalFunctions = new MethodInfo[functionSignatures.Length];
}
for (var i = 0; i < functionSignatures.Length; i++)
{
var signature = functionSignatures[i] = signatures[reader.ReadVarUInt32()];
var parms = signature.ParameterTypes.Concat(new[] { exports }).ToArray();
internalFunctions[importedFunctionCount + i] = exportsBuilder.DefineMethod(
$"👻 {i}",
internalFunctionAttributes,
CallingConventions.Standard,
signature.ReturnTypes.FirstOrDefault(),
parms
);
}
}
break;
case Section.Table:
{
var count = reader.ReadVarUInt32();
for (var i = 0; i < count; i++)
{
var elementType = (ElementType)reader.ReadVarInt7();
switch (elementType)
{
default:
throw new ModuleLoadException($"Element type {elementType} not supported.", reader.Offset);
case ElementType.AnyFunction:
var setFlags = (ResizableLimits.Flags)reader.ReadVarUInt32();
functionElements = new Indirect[reader.ReadVarUInt32()];
if ((setFlags & ResizableLimits.Flags.Maximum) != 0)
{
reader.ReadVarUInt32(); //Not used.
}
break;
}
}
}
break;
case Section.Memory:
{
var count = reader.ReadVarUInt32();
if (count > 1)
{
throw new ModuleLoadException("Multiple memory values are not supported.", reader.Offset);
}
var setFlags = (ResizableLimits.Flags)reader.ReadVarUInt32();
memoryPagesMinimum = reader.ReadVarUInt32();
if ((setFlags & ResizableLimits.Flags.Maximum) != 0)
{
memoryPagesMaximum = Math.Min(reader.ReadVarUInt32(), uint.MaxValue / Memory.PageSize);
}
else
{
memoryPagesMaximum = uint.MaxValue / Memory.PageSize;
}
memory = exportsBuilder.DefineField("☣ Memory", typeof(Runtime.UnmanagedMemory), FieldAttributes.Private | FieldAttributes.InitOnly);
instanceConstructorIL.Emit(OpCodes.Ldarg_0);
Instructions.Int32Constant.Emit(instanceConstructorIL, (int)memoryPagesMinimum);
Instructions.Int32Constant.Emit(instanceConstructorIL, (int)memoryPagesMaximum);
instanceConstructorIL.Emit(OpCodes.Newobj, typeof(uint?).GetTypeInfo().DeclaredConstructors.Where(info =>
{
var parms = info.GetParameters();
return(parms.Length == 1 && parms[0].ParameterType == typeof(uint));
}).First());
instanceConstructorIL.Emit(OpCodes.Newobj, typeof(Runtime.UnmanagedMemory).GetTypeInfo().DeclaredConstructors.Where(info =>
{
var parms = info.GetParameters();
return(parms.Length == 2 && parms[0].ParameterType == typeof(uint) && parms[1].ParameterType == typeof(uint?));
}).First());
instanceConstructorIL.Emit(OpCodes.Stfld, memory);
exportsBuilder.AddInterfaceImplementation(typeof(IDisposable));
var dispose = exportsBuilder.DefineMethod(
"Dispose",
MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.Final | MethodAttributes.HideBySig | MethodAttributes.NewSlot,
CallingConventions.HasThis,
typeof(void),
System.Type.EmptyTypes
);
var disposeIL = dispose.GetILGenerator();
disposeIL.Emit(OpCodes.Ldarg_0);
disposeIL.Emit(OpCodes.Ldfld, memory);
disposeIL.Emit(OpCodes.Call, typeof(Runtime.UnmanagedMemory)
.GetTypeInfo()
.DeclaredMethods
.Where(info =>
info.ReturnType == typeof(void) &&
info.GetParameters().Length == 0 &&
info.Name == nameof(Runtime.UnmanagedMemory.Dispose))
.First());
disposeIL.Emit(OpCodes.Ret);
}
break;
case Section.Global:
{
var count = reader.ReadVarUInt32();
globalGetters = new GlobalInfo[count];
globalSetters = new GlobalInfo[count];
context = new CompilationContext(
exportsBuilder,
memory,
functionSignatures,
internalFunctions,
signatures,
functionElements,
module,
globalGetters,
globalSetters
);
var emptySignature = Signature.Empty;
for (var i = 0; i < globalGetters.Length; i++)
{
var contentType = (ValueType)reader.ReadVarInt7();
var isMutable = reader.ReadVarUInt1() == 1;
var getter = exportsBuilder.DefineMethod(
$"🌍 Get {i}",
internalFunctionAttributes,
CallingConventions.Standard,
contentType.ToSystemType(),
isMutable ? new[] { exports } : null
);
globalGetters[i] = new GlobalInfo(contentType, isMutable, getter);
var il = getter.GetILGenerator();
var getterSignature = new Signature(contentType);
if (isMutable == false)
{
context.Reset(
il,
getterSignature,
getterSignature.RawParameterTypes
);
foreach (var instruction in Instruction.ParseInitializerExpression(reader))
{
instruction.Compile(context);
context.Previous = instruction.OpCode;
}
}
else //Mutable
{
var field = exportsBuilder.DefineField(
$"🌍 {i}",
contentType.ToSystemType(),
FieldAttributes.Private | (isMutable ? 0 : FieldAttributes.InitOnly)
);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldfld, field);
il.Emit(OpCodes.Ret);
var setter = exportsBuilder.DefineMethod(
$"🌍 Set {i}",
internalFunctionAttributes,
CallingConventions.Standard,
typeof(void),
new[] { contentType.ToSystemType(), exports }
);
il = setter.GetILGenerator();
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Stfld, field);
il.Emit(OpCodes.Ret);
globalSetters[i] = new GlobalInfo(contentType, isMutable, setter);
context.Reset(
instanceConstructorIL,
emptySignature,
emptySignature.RawParameterTypes
);
context.EmitLoadThis();
var ended = false;
foreach (var instruction in Instruction.ParseInitializerExpression(reader))
{
if (ended)
{
throw new CompilerException("Only a single End is allowed within an initializer expression.");
}
if (instruction.OpCode == OpCode.End)
{
context.Emit(OpCodes.Stfld, field);
ended = true;
continue;
}
instruction.Compile(context);
context.Previous = instruction.OpCode;
}
}
}
}
break;
case Section.Export:
{
const MethodAttributes exportedPropertyAttributes = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.Virtual | MethodAttributes.Final;
var totalExports = reader.ReadVarUInt32();
var xFunctions = new List <KeyValuePair <string, uint> >((int)Math.Min(int.MaxValue, totalExports));
for (var i = 0; i < totalExports; i++)
{
var name = reader.ReadString(reader.ReadVarUInt32());
var kind = (ExternalKind)reader.ReadByte();
var index = reader.ReadVarUInt32();
switch (kind)
{
case ExternalKind.Function:
xFunctions.Add(new KeyValuePair <string, uint>(name, index));
break;
case ExternalKind.Table:
throw new NotSupportedException($"Unsupported export kind {kind}.");
case ExternalKind.Memory:
if (index != 0)
{
throw new ModuleLoadException($"Exported memory must be of index 0, found {index}.", reader.Offset);
}
if (memory == null)
{
throw new CompilerException("Cannot export linear memory when linear memory is not defined.");
}
{
var memoryGetter = exportsBuilder.DefineMethod("get_" + name,
exportedPropertyAttributes,
CallingConventions.HasThis,
typeof(Runtime.UnmanagedMemory),
System.Type.EmptyTypes
);
var getterIL = memoryGetter.GetILGenerator();
getterIL.Emit(OpCodes.Ldarg_0);
getterIL.Emit(OpCodes.Ldfld, memory);
getterIL.Emit(OpCodes.Ret);
exportsBuilder.DefineProperty(name, PropertyAttributes.None, typeof(Runtime.UnmanagedMemory), System.Type.EmptyTypes)
.SetGetMethod(memoryGetter);
}
break;
case ExternalKind.Global:
if (index >= globalGetters.Length)
{
throw new ModuleLoadException($"Exported global index of {index} is greater than the number of globals {globalGetters.Length}.", reader.Offset);
}
{
var getter = globalGetters[i];
var setter = globalSetters[i];
var property = exportsBuilder.DefineProperty(name, PropertyAttributes.None, getter.Type.ToSystemType(), System.Type.EmptyTypes);
var wrappedGet = exportsBuilder.DefineMethod("get_" + name,
exportedPropertyAttributes,
CallingConventions.HasThis,
getter.Type.ToSystemType(),
System.Type.EmptyTypes
);
var wrappedGetIL = wrappedGet.GetILGenerator();
if (getter.IsMutable)
{
wrappedGetIL.Emit(OpCodes.Ldarg_0);
}
wrappedGetIL.Emit(OpCodes.Call, getter.Builder);
wrappedGetIL.Emit(OpCodes.Ret);
property.SetGetMethod(wrappedGet);
if (setter != null)
{
var wrappedSet = exportsBuilder.DefineMethod("set_" + name,
exportedPropertyAttributes,
CallingConventions.HasThis,
null,
new [] { getter.Type.ToSystemType() }
);
var wrappedSetIL = wrappedSet.GetILGenerator();
wrappedSetIL.Emit(OpCodes.Ldarg_1);
wrappedSetIL.Emit(OpCodes.Ldarg_0);
wrappedSetIL.Emit(OpCodes.Call, setter.Builder);
wrappedSetIL.Emit(OpCodes.Ret);
property.SetSetMethod(wrappedSet);
}
}
break;
default:
throw new NotSupportedException($"Unrecognized export kind {kind}.");
}
}
exportedFunctions = xFunctions.ToArray();
}
break;
case Section.Start:
{
var preReadOffset = reader.Offset;
var startIndex = reader.ReadVarInt32();
if (startIndex >= internalFunctions.Length)
{
throw new ModuleLoadException($"Start function of index {startIndex} exceeds available functions of {internalFunctions.Length}", preReadOffset);
}
startFunction = internalFunctions[startIndex];
}
break;
case Section.Element:
{
if (functionElements == null)
{
throw new ModuleLoadException("Element section found without an associated table section.", reader.Offset);
}
var count = reader.ReadVarUInt32();
for (var i = 0; i < count; i++)
{
var index = reader.ReadVarUInt32();
if (index != 0)
{
throw new ModuleLoadException($"Index value of anything other than 0 is not supported, {index} found.", reader.Offset);
}
{
var initializer = Instruction.ParseInitializerExpression(reader).ToArray();
if (initializer.Length != 2 || !(initializer[0] is Instructions.Int32Constant c) || c.Value != 0 || !(initializer[1] is Instructions.End))
{
throw new ModuleLoadException("Initializer expression support for the Element section is limited to a single Int32 constant of 0 followed by end.", reader.Offset);
}
}
var elements = reader.ReadVarUInt32();
if (elements != functionElements.Length)
{
throw new ModuleLoadException($"Element count {elements} does not match the indication provided by the earlier table {functionElements.Length}.", reader.Offset);
}
for (var j = 0; j < functionElements.Length; j++)
{
var functionIndex = reader.ReadVarUInt32();
functionElements[j] = new Indirect(
functionSignatures[functionIndex].TypeIndex,
(MethodBuilder)internalFunctions[importedFunctions + functionIndex]
);
}
}
}
break;
case Section.Code:
{
var functionBodies = reader.ReadVarUInt32();
if (functionBodies > 0 && functionSignatures == null)
{
throw new ModuleLoadException("Code section is invalid when Function section is missing.", reader.Offset);
}
if (functionBodies != functionSignatures.Length)
{
throw new ModuleLoadException($"Code section has {functionBodies} functions described but {functionSignatures.Length} were expected.", reader.Offset);
}
if (context == null) //Might have been created by the Global section, if present.
{
context = new CompilationContext(
exportsBuilder,
memory,
functionSignatures,
internalFunctions,
signatures,
functionElements,
module,
globalGetters,
globalSetters
);
}
for (var functionBodyIndex = 0; functionBodyIndex < functionBodies; functionBodyIndex++)
{
var signature = functionSignatures[functionBodyIndex];
var byteLength = reader.ReadVarUInt32();
var startingOffset = reader.Offset;
var locals = new Local[reader.ReadVarUInt32()];
for (var localIndex = 0; localIndex < locals.Length; localIndex++)
{
locals[localIndex] = new Local(reader);
}
var il = ((MethodBuilder)internalFunctions[importedFunctions + functionBodyIndex]).GetILGenerator();
context.Reset(
il,
signature,
signature.RawParameterTypes.Concat(
locals
.SelectMany(local => Enumerable.Range(0, checked ((int)local.Count)).Select(_ => local.Type))
).ToArray()
);
foreach (var local in locals.SelectMany(local => Enumerable.Range(0, checked ((int)local.Count)).Select(_ => local.Type)))
{
il.DeclareLocal(local.ToSystemType());
}
foreach (var instruction in Instruction.Parse(reader))
{
instruction.Compile(context);
context.Previous = instruction.OpCode;
}
if (reader.Offset - startingOffset != byteLength)
{
throw new ModuleLoadException($"Instruction sequence reader ended after readering {reader.Offset - startingOffset} characters, expected {byteLength}.", reader.Offset);
}
}
}
break;
case Section.Data:
{
if (memory == null)
{
throw new ModuleLoadException("Data section cannot be used unless a memory section is defined.", reader.Offset);
}
var count = reader.ReadVarUInt32();
if (context == null) //Would only be null if there is no Global or Code section, but have to check.
{
context = new CompilationContext(
exportsBuilder,
memory,
new Signature[0],
new MethodInfo[0],
new Signature[0],
functionElements,
module,
globalGetters,
globalSetters
);
}
context.Reset(
instanceConstructorIL,
Signature.Empty,
Signature.Empty.RawParameterTypes
);
var block = new Instructions.Block(BlockType.Int32);
var address = instanceConstructorIL.DeclareLocal(typeof(uint));
for (var i = 0; i < count; i++)
{
var startingOffset = reader.Offset;
{
var index = reader.ReadVarUInt32();
if (index != 0)
{
throw new ModuleLoadException($"Data index must be 0, found {index}.", startingOffset);
}
}
block.Compile(context); //Prevents "end" instruction of the initializer expression from becoming a return.
foreach (var instruction in Instruction.ParseInitializerExpression(reader))
{
instruction.Compile(context);
context.Previous = instruction.OpCode;
}
context.Stack.Pop();
instanceConstructorIL.Emit(OpCodes.Stloc, address);
var data = reader.ReadBytes(reader.ReadVarUInt32());
//Ensure sufficient memory is allocated, error if max is exceeded.
instanceConstructorIL.Emit(OpCodes.Ldloc, address);
instanceConstructorIL.Emit(OpCodes.Ldc_I4, data.Length);
instanceConstructorIL.Emit(OpCodes.Add_Ovf_Un);
instanceConstructorIL.Emit(OpCodes.Ldarg_0);
instanceConstructorIL.Emit(OpCodes.Call, context[HelperMethod.RangeCheck8, Instructions.MemoryImmediateInstruction.CreateRangeCheck]);
instanceConstructorIL.Emit(OpCodes.Pop);
if (data.Length > 0x3f0000) //Limitation of DefineInitializedData, can be corrected by splitting the data.
{
throw new NotSupportedException($"Data segment {i} is length {data.Length}, exceeding the current implementation limit of 4128768.");
}
var field = exportsBuilder.DefineInitializedData($"☣ Data {i}", data, FieldAttributes.Assembly | FieldAttributes.InitOnly);
instanceConstructorIL.Emit(OpCodes.Ldarg_0);
instanceConstructorIL.Emit(OpCodes.Ldfld, memory);
instanceConstructorIL.Emit(OpCodes.Call, Runtime.UnmanagedMemory.StartGetter);
instanceConstructorIL.Emit(OpCodes.Ldloc, address);
instanceConstructorIL.Emit(OpCodes.Conv_I);
instanceConstructorIL.Emit(OpCodes.Add_Ovf_Un);
instanceConstructorIL.Emit(OpCodes.Ldsflda, field);
instanceConstructorIL.Emit(OpCodes.Ldc_I4, data.Length);
instanceConstructorIL.Emit(OpCodes.Cpblk);
}
}
break;
default:
throw new ModuleLoadException($"Unrecognized section type {(Section)id}.", reader.Offset);
}
previousSection = (Section)id;
}
if (exportedFunctions != null)
{
for (var i = 0; i < exportedFunctions.Length; i++)
{
var exported = exportedFunctions[i];
var signature = functionSignatures[exported.Value - importedFunctions];
var method = exportsBuilder.DefineMethod(
exported.Key,
exportedFunctionAttributes,
CallingConventions.HasThis,
signature.ReturnTypes.FirstOrDefault(),
signature.ParameterTypes
);
var il = method.GetILGenerator();
for (var parm = 0; parm < signature.ParameterTypes.Length; parm++)
{
il.Emit(OpCodes.Ldarg, parm + 1);
}
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, internalFunctions[exported.Value]);
il.Emit(OpCodes.Ret);
}
}
if (startFunction != null)
{
instanceConstructorIL.Emit(OpCodes.Ldarg_0);
instanceConstructorIL.Emit(OpCodes.Call, startFunction);
}
instanceConstructorIL.Emit(OpCodes.Ret); //Finish the constructor.
var exportInfo = exportsBuilder.CreateTypeInfo();
TypeInfo instance;
{
var instanceBuilder = module.DefineType("CompiledInstance", classAttributes, instanceContainer);
var instanceConstructor = instanceBuilder.DefineConstructor(constructorAttributes, CallingConventions.Standard, null);
var il = instanceConstructor.GetILGenerator();
var memoryAllocated = checked (memoryPagesMaximum * Memory.PageSize);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Newobj, exportInfo.DeclaredConstructors.First());
il.Emit(OpCodes.Call, instanceContainer
.GetTypeInfo()
.DeclaredConstructors
.First(info => info.GetParameters()
.FirstOrDefault()
?.ParameterType == exportContainer
)
);
il.Emit(OpCodes.Ret);
instance = instanceBuilder.CreateTypeInfo();
}
module.CreateGlobalFunctions();
return(instance.DeclaredConstructors.First());
}
private bool HasFlag(MethodAttributes flag)
{
// flag must be exactly one bit
Debug.Assert(flag != 0 && ((ushort)flag & ((ushort)flag - 1)) == 0);
return(((ushort)flag & _flags) != 0);
}
static Type EnsureDelegateType(BuildContext context, MethodInfo method)
{
// The delegate should be defined as inner type of context.TypeBuilder.
// It's possible, but we can not define and use newly defined type as Emit target in its owner type.
// To solve this problem, we should create a top level delegate and make sure its name is unique.
//
var delegateName = context.TypeBuilder.TypeBuilder.FullName + "$" + method.Name + "$Delegate";
var delegateType = context.GetItem <Type>(delegateName);
if (delegateType == null)
{
var pi = method.GetParameters();
var parameters = new Type[pi.Length];
for (var i = 0; i < pi.Length; i++)
{
parameters[i] = pi[i].ParameterType;
}
const MethodImplAttributes mia = MethodImplAttributes.Runtime | MethodImplAttributes.Managed;
const MethodAttributes ma = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.Virtual;
Debug.Assert(context.AssemblyBuilder != null, "context.AssemblyBuilder != null");
var delegateBuilder = context.AssemblyBuilder.DefineType(delegateName,
TypeAttributes.Class | TypeAttributes.NotPublic | TypeAttributes.Sealed | TypeAttributes.AnsiClass | TypeAttributes.AutoClass,
typeof(MulticastDelegate));
// Create constructor
//
var ctorBuilder = delegateBuilder.DefineConstructor(
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.RTSpecialName, CallingConventions.Standard,
typeof(object), typeof(IntPtr));
ctorBuilder.ConstructorBuilder.SetImplementationFlags(mia);
// Define the BeginInvoke method for the delegate
//
var beginParameters = new Type[parameters.Length + 2];
Array.Copy(parameters, 0, beginParameters, 0, parameters.Length);
beginParameters[parameters.Length] = typeof(AsyncCallback);
beginParameters[parameters.Length + 1] = typeof(object);
var methodBuilder = delegateBuilder.DefineMethod("BeginInvoke", ma, typeof(IAsyncResult), beginParameters);
methodBuilder.MethodBuilder.SetImplementationFlags(mia);
// Define the EndInvoke method for the delegate
//
methodBuilder = delegateBuilder.DefineMethod("EndInvoke", ma, method.ReturnType, typeof(IAsyncResult));
methodBuilder.MethodBuilder.SetImplementationFlags(mia);
// Define the Invoke method for the delegate
//
methodBuilder = delegateBuilder.DefineMethod("Invoke", ma, method.ReturnType, parameters);
methodBuilder.MethodBuilder.SetImplementationFlags(mia);
context.Items.Add(delegateName, delegateType = delegateBuilder.Create());
}
return(delegateType);
}
public void AddDeclarativeSecurity(System.Security.Permissions.SecurityAction securityAction, System.Security.PermissionSet permissionSet)
{
this.ModuleBuilder.AddDeclarativeSecurity(pseudoToken, securityAction, permissionSet);
this.attributes |= MethodAttributes.HasSecurity;
}
public void __SetAttributes(MethodAttributes attributes)
{
this.attributes = attributes;
}
public DynamicMethod(string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, Module m, bool skipVisibility) : this(name, attributes, callingConvention, returnType, parameterTypes, null, m, skipVisibility, false)
{
}
public MethodBuilder DefinePInvokeMethod(string name, string dllName, string entryName, MethodAttributes attributes, CallingConventions callingConvention,
Type returnType, Type[] returnTypeRequiredCustomModifiers, Type[] returnTypeOptionalCustomModifiers,
Type[] parameterTypes, Type[][] parameterTypeRequiredCustomModifiers, Type[][] parameterTypeOptionalCustomModifiers,
CallingConvention nativeCallConv, CharSet nativeCharSet)
{
MethodBuilder mb = DefineMethod(name, attributes | MethodAttributes.PinvokeImpl, callingConvention,
returnType, returnTypeRequiredCustomModifiers, returnTypeOptionalCustomModifiers,
parameterTypes, parameterTypeRequiredCustomModifiers, parameterTypeOptionalCustomModifiers);
mb.SetDllImportPseudoCustomAttribute(dllName, entryName, nativeCallConv, nativeCharSet, null, null, null, null, null);
return(mb);
}
