private TypeNode ConvertToClassParameter(TypeNode baseType, TypeNode/*!*/ typeParameter)
{
ClassParameter result;
if (typeParameter is MethodTypeParameter)
{
result = new MethodClassParameter();
}
else if (typeParameter is TypeParameter)
{
result = new ClassParameter();
result.DeclaringType = typeParameter.DeclaringType;
}
else
return typeParameter; //give up
result.SourceContext = typeParameter.SourceContext;
result.TypeParameterFlags = ((ITypeParameter)typeParameter).TypeParameterFlags;
result.Name = typeParameter.Name;
result.Namespace = StandardIds.ClassParameter;
result.BaseClass = baseType is Class ? (Class)baseType : CoreSystemTypes.Object;
result.DeclaringMember = ((ITypeParameter)typeParameter).DeclaringMember;
result.DeclaringModule = typeParameter.DeclaringModule;
result.Flags = typeParameter.Flags & ~TypeFlags.Interface;
//InterfaceList constraints = result.Interfaces = new InterfaceList();
InterfaceList interfaces = typeParameter.Interfaces;
for (int i = 1, n = interfaces == null ? 0 : interfaces.Count; i < n; i++)
{
//^ assert interfaces != null;
interfaces.Add(this.VisitInterfaceReference(interfaces[i]));
}
return result;
}
private Method CreateWrapperMethod(bool virtcall, TypeNode virtcallConstraint, Method templateMethod, TypeNode templateType, TypeNode wrapperType, Method methodWithContract, Method instanceMethod, SourceContext callingContext)
{
bool isProtected = IsProtected(templateMethod);
Identifier name = templateMethod.Name;
if (virtcall) {
if (virtcallConstraint != null) {
name = Identifier.For("CV$" + name.Name);
}
else {
name = Identifier.For("V$" + name.Name);
}
}
else {
name = Identifier.For("NV$" + name.Name);
}
Duplicator dup = new Duplicator(this.assemblyBeingRewritten, wrapperType);
TypeNodeList typeParameters = null;
TypeNodeList typeParameterFormals = new TypeNodeList();
TypeNodeList typeParameterActuals = new TypeNodeList();
if (templateMethod.TemplateParameters != null) {
dup.FindTypesToBeDuplicated(templateMethod.TemplateParameters);
typeParameters = dup.VisitTypeParameterList(templateMethod.TemplateParameters);
for (int i = 0; i < typeParameters.Count; i++) {
typeParameterFormals.Add(typeParameters[i]);
typeParameterActuals.Add(templateMethod.TemplateParameters[i]);
}
}
ITypeParameter constraintTypeParam = null;
if (virtcallConstraint != null) {
if (typeParameters == null) { typeParameters = new TypeNodeList(); }
var constraint = templateMethod.DeclaringType;
var classConstraint = constraint as Class;
if (classConstraint != null) {
var classParam = new MethodClassParameter();
classParam.BaseClass = classConstraint;
classParam.Name = Identifier.For("TC");
classParam.DeclaringType = wrapperType;
typeParameters.Add(classParam);
constraintTypeParam = classParam;
}
else {
var mtp = new MethodTypeParameter();
Interface intf = constraint as Interface;
if (intf != null) {
mtp.Interfaces.Add(intf);
}
mtp.Name = Identifier.For("TC");
mtp.DeclaringType = wrapperType;
typeParameters.Add(mtp);
constraintTypeParam = mtp;
}
}
var consolidatedTemplateTypeParameters = templateType.ConsolidatedTemplateParameters;
if (consolidatedTemplateTypeParameters != null && consolidatedTemplateTypeParameters.Count > 0) {
var consolidatedWrapperTypeParameters = wrapperType.ConsolidatedTemplateParameters;
for (int i = 0; i < consolidatedTemplateTypeParameters.Count; i++) {
typeParameterFormals.Add(consolidatedWrapperTypeParameters[i]);
typeParameterActuals.Add(consolidatedTemplateTypeParameters[i]);
}
}
Specializer spec = null;
if (typeParameterActuals.Count > 0) {
spec = new Specializer(this.assemblyBeingRewritten, typeParameterActuals, typeParameterFormals);
}
var parameters = new ParameterList();
var asTypeConstraintTypeParam = constraintTypeParam as TypeNode;
if (!isProtected && !templateMethod.IsStatic) {
TypeNode thisType = GetThisTypeInstance(templateType, wrapperType, asTypeConstraintTypeParam);
parameters.Add(new Parameter(Identifier.For("@this"), thisType));
}
for (int i = 0; i < templateMethod.Parameters.Count; i++) {
parameters.Add((Parameter)dup.VisitParameter(templateMethod.Parameters[i]));
}
var retType = dup.VisitTypeReference(templateMethod.ReturnType);
if (spec != null) {
parameters = spec.VisitParameterList(parameters);
retType = spec.VisitTypeReference(retType);
}
var wrapperMethod = new Method(wrapperType, null, name, parameters, retType, null);
RewriteHelper.TryAddCompilerGeneratedAttribute(wrapperMethod);
if (isProtected) {
wrapperMethod.Flags = templateMethod.Flags & ~MethodFlags.Abstract;
wrapperMethod.CallingConvention = templateMethod.CallingConvention;
}
else {
wrapperMethod.Flags |= MethodFlags.Static | MethodFlags.Assembly;
}
if (constraintTypeParam != null) {
constraintTypeParam.DeclaringMember = wrapperMethod;
}
if (typeParameters != null) {
if (spec != null) {
typeParameters = spec.VisitTypeParameterList(typeParameters);
}
wrapperMethod.IsGeneric = true;
wrapperMethod.TemplateParameters = typeParameters;
}
// create body
var sl = new StatementList();
Block b = new Block(sl);
// insert requires
AddRequiresToWrapperMethod(wrapperMethod, b, methodWithContract);
// create original call
var targetType = templateType;
if (isProtected)
{
// need to use base chain instantiation of target type.
targetType = instanceMethod.DeclaringType;
}
else
{
if (targetType.ConsolidatedTemplateParameters != null && targetType.ConsolidatedTemplateParameters.Count > 0)
{
// need selfinstantiation
targetType = targetType.GetGenericTemplateInstance(this.assemblyBeingRewritten, wrapperType.ConsolidatedTemplateParameters);
}
}
Method targetMethod = GetMatchingMethod(targetType, templateMethod, wrapperMethod);
if (targetMethod.IsGeneric) {
if (typeParameters.Count > targetMethod.TemplateParameters.Count) {
// omit the extra constrained type arg.
TypeNodeList origArgs = new TypeNodeList();
for (int i = 0; i < targetMethod.TemplateParameters.Count; i++) {
origArgs.Add(typeParameters[i]);
}
targetMethod = targetMethod.GetTemplateInstance(wrapperType, origArgs);
}
else {
targetMethod = targetMethod.GetTemplateInstance(wrapperType, typeParameters);
}
}
MethodCall call;
NodeType callType = virtcall ? NodeType.Callvirt : NodeType.Call;
if (isProtected) {
var mb = new MemberBinding(wrapperMethod.ThisParameter, targetMethod);
var elist = new ExpressionList(wrapperMethod.Parameters.Count);
for (int i = 0; i < wrapperMethod.Parameters.Count; i++) {
elist.Add(wrapperMethod.Parameters[i]);
}
call = new MethodCall(mb, elist, callType);
}
else if (templateMethod.IsStatic) {
var elist = new ExpressionList(wrapperMethod.Parameters.Count);
for (int i = 0; i < wrapperMethod.Parameters.Count; i++) {
elist.Add(wrapperMethod.Parameters[i]);
}
call = new MethodCall(new MemberBinding(null, targetMethod), elist, callType);
}
else {
var mb = new MemberBinding(wrapperMethod.Parameters[0], targetMethod);
var elist = new ExpressionList(wrapperMethod.Parameters.Count - 1);
for (int i = 1; i < wrapperMethod.Parameters.Count; i++) {
elist.Add(wrapperMethod.Parameters[i]);
}
call = new MethodCall(mb, elist, callType);
}
if (constraintTypeParam != null) {
call.Constraint = asTypeConstraintTypeParam;
}
if (HelperMethods.IsVoidType(templateMethod.ReturnType)) {
sl.Add(new ExpressionStatement(call,callingContext));
sl.Add(new Return(callingContext));
}
else {
sl.Add(new Return(call,callingContext));
}
wrapperMethod.Body = b;
wrapperType.Members.Add(wrapperMethod);
return wrapperMethod;
}
private static TypeNode NewEqualMethodTypeParameter(ITypeParameter itp, Method declaringMethod, int index)
{
TypeNode declaringType = declaringMethod.DeclaringType;
ClassParameter cp = itp as ClassParameter;
if (cp != null)
{
MethodClassParameter mcp = new MethodClassParameter();
mcp.Interfaces = cp.Interfaces.Clone();
mcp.BaseClass = cp.BaseClass;
mcp.TypeParameterFlags = cp.TypeParameterFlags & ~TypeParameterFlags.VarianceMask;
mcp.DeclaringType = declaringType;
mcp.DeclaringModule = declaringType.DeclaringModule;
mcp.Name = cp.Name;
mcp.ParameterListIndex = index;
mcp.DeclaringMember = declaringMethod;
return mcp;
}
TypeParameter tp = itp as TypeParameter;
if (tp != null)
{
MethodTypeParameter mp = new MethodTypeParameter();
mp.Interfaces = tp.Interfaces.Clone();
mp.TypeParameterFlags = tp.TypeParameterFlags & ~TypeParameterFlags.VarianceMask;
mp.DeclaringType = declaringType;
mp.DeclaringModule = declaringType.DeclaringModule;
mp.Name = tp.Name;
mp.ParameterListIndex = index;
mp.DeclaringMember = declaringMethod;
return mp;
}
throw new NotImplementedException("unexpected type parameter kind");
}
private Method MakeRequiresWithExceptionMethod(string name)
{
Parameter conditionParameter = new Parameter(Identifier.For("condition"), SystemTypes.Boolean);
Parameter messageParameter = new Parameter(Identifier.For("msg"), SystemTypes.String);
Parameter conditionTextParameter = new Parameter(Identifier.For("conditionTxt"), SystemTypes.String);
MethodClassParameter typeArg = new MethodClassParameter();
ParameterList pl = new ParameterList(conditionParameter, messageParameter, conditionTextParameter);
Block body = new Block(new StatementList());
Method m = new Method(this.RuntimeContractType, null, Identifier.For(name), pl, SystemTypes.Void, body);
m.Flags = MethodFlags.Assembly | MethodFlags.Static;
m.Attributes = new AttributeList();
m.TemplateParameters = new TypeNodeList(typeArg);
m.IsGeneric = true;
this.RuntimeContractType.Members.Add(m);
typeArg.Name = Identifier.For("TException");
typeArg.DeclaringMember = m;
typeArg.BaseClass = SystemTypes.Exception;
typeArg.ParameterListIndex = 0;
typeArg.DeclaringModule = this.RuntimeContractType.DeclaringModule;
Block returnBlock = new Block(new StatementList(new Return()));
Block b = new Block(new StatementList());
b.Statements.Add(new Branch(conditionParameter, returnBlock));
//
// Generate the following
//
// // message == null means: yes we handled it. Otherwise it is the localized failure message
// var message = RaiseFailureEvent(ContractFailureKind.Precondition, userMessage, conditionString, null);
// #if assertOnFailure
// if (message != null) {
// Assert(false, message);
// }
// #endif
var messageLocal = new Local(Identifier.For("msg"), SystemTypes.String);
ExpressionList elist = new ExpressionList();
elist.Add(this.PreconditionKind);
elist.Add(messageParameter);
elist.Add(conditionTextParameter);
elist.Add(Literal.Null);
b.Statements.Add(new AssignmentStatement(messageLocal, new MethodCall(new MemberBinding(null, this.RaiseFailureEventMethod), elist)));
if (this.AssertOnFailure)
{
var assertMethod = GetSystemDiagnosticsAssertMethod();
if (assertMethod != null)
{
var skipAssert = new Block();
b.Statements.Add(new Branch(new UnaryExpression(messageLocal, NodeType.LogicalNot), skipAssert));
// emit assert call
ExpressionList assertelist = new ExpressionList();
assertelist.Add(Literal.False);
assertelist.Add(messageLocal);
b.Statements.Add(new ExpressionStatement(new MethodCall(new MemberBinding(null, assertMethod), assertelist)));
b.Statements.Add(skipAssert);
}
}
// // construct exception
// Exception obj = null;
// ConstructorInfo ci = typeof(TException).GetConstructor(new[] { typeof(string), typeof(string) });
// if (ci != null)
// {
// if (reflection.firstArgName == "paramName") {
// exceptionObject = ci.Invoke(new[] { userMessage, message }) as Exception;
// }
// else {
// exceptionObject = ci.Invoke(new[] { message, userMessage }) as Exception;
// }
// }
// else {
// ci = typeof(TException).GetConstructor(new[] { typeof(string) });
// if (ci != null)
// {
// exceptionObject = ci.Invoke(new[] { message }) as Exception;
// }
// }
var exceptionLocal = new Local(Identifier.For("obj"), SystemTypes.Exception);
b.Statements.Add(new AssignmentStatement(exceptionLocal, Literal.Null));
var constructorInfoType = TypeNode.GetTypeNode(typeof(System.Reflection.ConstructorInfo));
Contract.Assume(constructorInfoType != null);
var methodBaseType = TypeNode.GetTypeNode(typeof(System.Reflection.MethodBase));
Contract.Assume(methodBaseType != null);
var constructorLocal = new Local(Identifier.For("ci"), constructorInfoType);
Contract.Assume(SystemTypes.Type != null);
var getConstructorMethod = SystemTypes.Type.GetMethod(Identifier.For("GetConstructor"), SystemTypes.Type.GetArrayType(1));
var typeofExceptionArg = GetTypeFromHandleExpression(typeArg);
var typeofString = GetTypeFromHandleExpression(SystemTypes.String);
var typeArrayLocal = new Local(Identifier.For("typeArray"), SystemTypes.Type.GetArrayType(1));
var typeArray2 = new ConstructArray();
typeArray2.ElementType = SystemTypes.Type;
typeArray2.Rank = 1;
typeArray2.Operands = new ExpressionList(Literal.Int32Two);
var typeArrayInit2 = new Block(new StatementList());
typeArrayInit2.Statements.Add(new AssignmentStatement(typeArrayLocal, typeArray2));
typeArrayInit2.Statements.Add(new AssignmentStatement(new Indexer(typeArrayLocal, new ExpressionList(Literal.Int32Zero), SystemTypes.Type), typeofString));
typeArrayInit2.Statements.Add(new AssignmentStatement(new Indexer(typeArrayLocal, new ExpressionList(Literal.Int32One), SystemTypes.Type), typeofString));
typeArrayInit2.Statements.Add(new ExpressionStatement(typeArrayLocal));
var typeArrayExpression2 = new BlockExpression(typeArrayInit2);
b.Statements.Add(new AssignmentStatement(constructorLocal, new MethodCall(new MemberBinding(typeofExceptionArg, getConstructorMethod), new ExpressionList(typeArrayExpression2))));
var elseBlock = new Block();
b.Statements.Add(new Branch(new UnaryExpression(constructorLocal, NodeType.LogicalNot), elseBlock));
var endifBlock2 = new Block();
var invokeMethod = constructorInfoType.GetMethod(Identifier.For("Invoke"), SystemTypes.Object.GetArrayType(1));
var argArray2 = new ConstructArray();
argArray2.ElementType = SystemTypes.Object;
argArray2.Rank = 1;
argArray2.Operands = new ExpressionList(Literal.Int32Two);
var argArrayLocal = new Local(Identifier.For("argArray"), SystemTypes.Object.GetArrayType(1));
var parameterInfoType = TypeNode.GetTypeNode(typeof(System.Reflection.ParameterInfo));
Contract.Assume(parameterInfoType != null);
var parametersMethod = methodBaseType.GetMethod(Identifier.For("GetParameters"));
var get_NameMethod = parameterInfoType.GetMethod(Identifier.For("get_Name"));
var string_op_EqualityMethod = SystemTypes.String.GetMethod(Identifier.For("op_Equality"), SystemTypes.String, SystemTypes.String);
var elseArgMsgBlock = new Block();
var endIfArgMsgBlock = new Block();
b.Statements.Add(new Branch(new UnaryExpression(new MethodCall(new MemberBinding(null, string_op_EqualityMethod), new ExpressionList(new MethodCall(new MemberBinding(new Indexer(new MethodCall(new MemberBinding(constructorLocal, parametersMethod), new ExpressionList(), NodeType.Callvirt), new ExpressionList(Literal.Int32Zero), parameterInfoType), get_NameMethod), new ExpressionList(), NodeType.Callvirt), new Literal("paramName", SystemTypes.String))), NodeType.LogicalNot), elseArgMsgBlock));
var argArrayInit2 = new Block(new StatementList());
argArrayInit2.Statements.Add(new AssignmentStatement(argArrayLocal, argArray2));
argArrayInit2.Statements.Add(new AssignmentStatement(new Indexer(argArrayLocal, new ExpressionList(Literal.Int32Zero), SystemTypes.Object), messageParameter));
argArrayInit2.Statements.Add(new AssignmentStatement(new Indexer(argArrayLocal, new ExpressionList(Literal.Int32One), SystemTypes.Object), messageLocal));
argArrayInit2.Statements.Add(new ExpressionStatement(argArrayLocal));
var argArrayExpression2 = new BlockExpression(argArrayInit2);
b.Statements.Add(new AssignmentStatement(exceptionLocal, new BinaryExpression(new MethodCall(new MemberBinding(constructorLocal, invokeMethod), new ExpressionList(argArrayExpression2)), new Literal(SystemTypes.Exception), NodeType.Isinst)));
b.Statements.Add(new Branch(null, endIfArgMsgBlock));
b.Statements.Add(elseArgMsgBlock);
var argArrayInit2_1 = new Block(new StatementList());
argArrayInit2_1.Statements.Add(new AssignmentStatement(argArrayLocal, argArray2));
argArrayInit2_1.Statements.Add(new AssignmentStatement(new Indexer(argArrayLocal, new ExpressionList(Literal.Int32Zero), SystemTypes.Object), messageLocal));
argArrayInit2_1.Statements.Add(new AssignmentStatement(new Indexer(argArrayLocal, new ExpressionList(Literal.Int32One), SystemTypes.Object), messageParameter));
argArrayInit2_1.Statements.Add(new ExpressionStatement(argArrayLocal));
var argArrayExpression2_1 = new BlockExpression(argArrayInit2_1);
b.Statements.Add(new AssignmentStatement(exceptionLocal, new BinaryExpression(new MethodCall(new MemberBinding(constructorLocal, invokeMethod), new ExpressionList(argArrayExpression2_1)), new Literal(SystemTypes.Exception), NodeType.Isinst)));
b.Statements.Add(endIfArgMsgBlock);
b.Statements.Add(new Branch(null, endifBlock2));
b.Statements.Add(elseBlock);
var typeArray1 = new ConstructArray();
typeArray1.ElementType = SystemTypes.Type;
typeArray1.Rank = 1;
typeArray1.Operands = new ExpressionList(Literal.Int32One);
var typeArrayInit1 = new Block(new StatementList());
typeArrayInit1.Statements.Add(new AssignmentStatement(typeArrayLocal, typeArray1));
typeArrayInit1.Statements.Add(new AssignmentStatement(new Indexer(typeArrayLocal, new ExpressionList(Literal.Int32Zero), SystemTypes.Type), typeofString));
typeArrayInit1.Statements.Add(new ExpressionStatement(typeArrayLocal));
var typeArrayExpression1 = new BlockExpression(typeArrayInit1);
b.Statements.Add(new AssignmentStatement(constructorLocal, new MethodCall(new MemberBinding(typeofExceptionArg, getConstructorMethod), new ExpressionList(typeArrayExpression1))));
b.Statements.Add(new Branch(new UnaryExpression(constructorLocal, NodeType.LogicalNot), endifBlock2));
var argArray1 = new ConstructArray();
argArray1.ElementType = SystemTypes.Object;
argArray1.Rank = 1;
argArray1.Operands = new ExpressionList(Literal.Int32One);
var argArrayInit1 = new Block(new StatementList());
argArrayInit1.Statements.Add(new AssignmentStatement(argArrayLocal, argArray1));
argArrayInit1.Statements.Add(new AssignmentStatement(new Indexer(argArrayLocal, new ExpressionList(Literal.Int32Zero), SystemTypes.Object), messageLocal));
argArrayInit1.Statements.Add(new ExpressionStatement(argArrayLocal));
var argArrayExpression1 = new BlockExpression(argArrayInit1);
b.Statements.Add(new AssignmentStatement(exceptionLocal, new BinaryExpression(new MethodCall(new MemberBinding(constructorLocal, invokeMethod), new ExpressionList(argArrayExpression1)), new Literal(SystemTypes.Exception), NodeType.Isinst)));
b.Statements.Add(endifBlock2);
// // throw it
// if (exceptionObject == null)
// {
// throw new ArgumentException(displayMessage, message);
// }
// else
// {
// throw exceptionObject;
// }
var thenBlock3 = new Block();
b.Statements.Add(new Branch(exceptionLocal, thenBlock3));
b.Statements.Add(new Throw(new Construct(new MemberBinding(null, SystemTypes.ArgumentException.GetConstructor(SystemTypes.String, SystemTypes.String)), new ExpressionList(messageLocal, messageParameter))));
b.Statements.Add(thenBlock3);
b.Statements.Add(new Throw(exceptionLocal));
b.Statements.Add(returnBlock);
Contract.Assume(body.Statements != null);
body.Statements.Add(b);
Member constructor = null;
AttributeNode attribute = null;
#region Add [DebuggerNonUserCodeAttribute]
if (this.HideFromDebugger) {
TypeNode debuggerNonUserCode = SystemTypes.SystemAssembly.GetType(Identifier.For("System.Diagnostics"), Identifier.For("DebuggerNonUserCodeAttribute"));
if (debuggerNonUserCode != null)
{
constructor = debuggerNonUserCode.GetConstructor();
attribute = new AttributeNode(new MemberBinding(null, constructor), null, AttributeTargets.Method);
m.Attributes.Add(attribute);
}
}
#endregion Add [DebuggerNonUserCodeAttribute]
TypeNode reliabilityContract = SystemTypes.SystemAssembly.GetType(Identifier.For("System.Runtime.ConstrainedExecution"), Identifier.For("ReliabilityContractAttribute"));
TypeNode consistency = SystemTypes.SystemAssembly.GetType(Identifier.For("System.Runtime.ConstrainedExecution"), Identifier.For("Consistency"));
TypeNode cer = SystemTypes.SystemAssembly.GetType(Identifier.For("System.Runtime.ConstrainedExecution"), Identifier.For("Cer"));
if (reliabilityContract != null && consistency != null && cer != null)
{
constructor = reliabilityContract.GetConstructor(consistency, cer);
if (constructor != null)
{
attribute = new AttributeNode(
new MemberBinding(null, constructor),
new ExpressionList(
new Literal(System.Runtime.ConstrainedExecution.Consistency.WillNotCorruptState, consistency),
new Literal(System.Runtime.ConstrainedExecution.Cer.MayFail, cer)),
AttributeTargets.Method
);
m.Attributes.Add(attribute);
}
}
return m;
}