public static bool SetType(ref Expression expr, IType dstType, IContext context)
{
IType type = expr.EvalType;
if (!type.CanAssignTo(dstType))
{
if (type.CanPromoteTo(dstType))
{
expr = new TypePromotionExpression(expr, new ResolvedType(dstType));
expr = expr.ResolveRValue(context);
}
/*
* else if (type.CanImplicitlyCastTo(dstType))
* {
* }
*/
else if ((dstType.IsEqualTo(Types.GetType("Object")) || dstType.IsEqualTo(Types.GetType("ValueType"))) && (type is ValueTypeSymbol))
{
expr = new BoxExpression(expr);
expr = expr.ResolveRValue(context);
}
else
{
return(false);
}
}
return(true);
}
public override ICodeNode VisitBoxExpression(BoxExpression node)
{
base.VisitBoxExpression(node);
if (node.BoxedExpression.CodeNodeType == CodeNodeType.LiteralExpression && node.BoxedAs.FullName == currentTypeSystem.Boolean.FullName)
{
FixBooleanLiteral(node.BoxedExpression as LiteralExpression);
return(node.BoxedExpression.CloneAndAttachInstructions(node.MappedInstructions));
}
if (node.BoxedExpression.CodeNodeType == CodeNodeType.ExplicitCastExpression && ((ExplicitCastExpression)node.BoxedExpression).Expression.CodeNodeType == CodeNodeType.ExplicitCastExpression)
{
// double cast in a boxed expression;
ExplicitCastExpression outerCast = node.BoxedExpression as ExplicitCastExpression;
ExplicitCastExpression innerCast = outerCast.Expression as ExplicitCastExpression;
if (outerCast.TargetType.FullName == currentTypeSystem.Char.FullName &&
innerCast.TargetType.FullName == currentTypeSystem.UInt16.FullName)
{
// Remove the outer cast, as it is produced by the box expression and doesn't have any instructions mapped.
// The inner cast contains the instruction, converting the stack value to 2-byte integer (which at this point is known to be char, not ushort).
innerCast.TargetType = currentTypeSystem.Char;
node.BoxedExpression = innerCast;
}
}
return(node);
}
public override ICodeNode VisitBoxExpression(BoxExpression node)
{
node = (BoxExpression)this.VisitBoxExpression(node);
V_0 = node.get_BoxedAs().Resolve();
if (V_0 != null && V_0.get_IsEnum() && !node.get_BoxedAs().get_IsArray() && node.get_BoxedExpression() as LiteralExpression != null)
{
node.set_BoxedExpression(EnumHelper.GetEnumExpression(V_0, node.get_BoxedExpression() as LiteralExpression, this.typeSystem));
}
return(node);
}
public override ICodeNode VisitBoxExpression(BoxExpression node)
{
node = (BoxExpression)base.VisitBoxExpression(node);
TypeDefinition boxedAs = node.BoxedAs.Resolve();
if (boxedAs != null && boxedAs.IsEnum && !node.BoxedAs.IsArray)
{
if (node.BoxedExpression is LiteralExpression)
{
node.BoxedExpression = EnumHelper.GetEnumExpression(boxedAs, node.BoxedExpression as LiteralExpression, typeSystem);
}
}
return(node);
}
private ICodeNode ConvertConstant(MethodInvocationExpression invocation)
{
if (invocation.Arguments.Count < 1 || invocation.Arguments.Count > 2)
{
return(null);
}
Expression result = (Expression)Visit(invocation.Arguments[0]);
if (invocation.Arguments.Count == 2)
{
//This is done in order to mark the Type argument variable
Visit(invocation.Arguments[1]);
}
BoxExpression boxExpression = result as BoxExpression;
return(boxExpression != null && boxExpression.IsAutoBox ? boxExpression.BoxedExpression : result);
}
public override ICodeNode VisitBoxExpression(BoxExpression node)
{
dummyVar0 = this.VisitBoxExpression(node);
if (node.get_BoxedExpression().get_CodeNodeType() == 22 && String.op_Equality(node.get_BoxedAs().get_FullName(), this.currentTypeSystem.get_Boolean().get_FullName()))
{
this.FixBooleanLiteral(node.get_BoxedExpression() as LiteralExpression);
return(node.get_BoxedExpression().CloneAndAttachInstructions(node.get_MappedInstructions()));
}
if (node.get_BoxedExpression().get_CodeNodeType() == 31 && ((ExplicitCastExpression)node.get_BoxedExpression()).get_Expression().get_CodeNodeType() == 31)
{
stackVariable20 = node.get_BoxedExpression() as ExplicitCastExpression;
V_0 = stackVariable20.get_Expression() as ExplicitCastExpression;
if (String.op_Equality(stackVariable20.get_TargetType().get_FullName(), this.currentTypeSystem.get_Char().get_FullName()) && String.op_Equality(V_0.get_TargetType().get_FullName(), this.currentTypeSystem.get_UInt16().get_FullName()))
{
V_0.set_TargetType(this.currentTypeSystem.get_Char());
node.set_BoxedExpression(V_0);
}
}
return(node);
}
public override void VisitExpressionStatement(ExpressionStatement node)
{
if (!foundWhile)
{
if (IsEnumeratorAssignment(node.Expression))
{
foundEnumeratorAssignment = true;
enumeratorAssignmentStatement = node;
return;
}
}
else
{
if (node.Expression is BinaryExpression)
{
if (!IsForeachVariableAssignment(node.Expression as BinaryExpression))
{
if (shouldAdd)
{
foreachBody.AddStatement(node);
}
}
}
else if (node.Expression is MethodInvocationExpression || node.Expression is PropertyReferenceExpression)
{
if (IsGetCurrent(node.Expression))
{
//covers the case where the foreach variable is not used
this.foreachVariableType = node.Expression.ExpressionType;
}
else
{
if (shouldAdd)
{
foreachBody.AddStatement(node);
}
}
}
else if (node.Expression is ExplicitCastExpression)
{
ExplicitCastExpression theCast = node.Expression as ExplicitCastExpression;
if (IsGetCurrent(theCast.Expression))
{
this.foreachVariableType = theCast.ExpressionType;
}
else
{
if (shouldAdd)
{
foreachBody.AddStatement(node);
}
}
}
else if (node.Expression is BoxExpression)
{
BoxExpression theBox = node.Expression as BoxExpression;
if (IsGetCurrent(theBox.BoxedExpression))
{
this.foreachVariableType = theBox.BoxedAs;
}
else
{
if (shouldAdd)
{
foreachBody.AddStatement(node);
}
}
}
else
{
if (shouldAdd)
{
foreachBody.AddStatement(node);
}
}
}
}
public virtual void VisitBoxExpression(BoxExpression node)
{
Visit(node.BoxedExpression);
}
public virtual ICodeNode VisitBoxExpression(BoxExpression node)
{
node.BoxedExpression = (Expression)Visit(node.BoxedExpression);
return(node);
}
public override void VisitBoxExpression(BoxExpression node)
{
Stack <Expression> removedExpressions = new Stack <Expression>();
removedExpressions.Push(parentExpressions.Pop()); // pop the box expression
if (parentExpressions.Count > 0)
{
Expression containingExpression = parentExpressions.Peek();
if (containingExpression is MemberReferenceExpresion)
{
MemberReferenceExpresion memberExpression = parentExpressions.Pop() as MemberReferenceExpresion;
removedExpressions.Push(memberExpression);
if (memberExpression.Member is MethodReference)
{
//The box expression is the method target.
// This is automatically handled by C#/VB compilers.
node.IsAutoBox = true;
}
}
else if (containingExpression is MethodInvocationExpression ||
containingExpression is FieldReferenceExpression ||
containingExpression is PropertyReferenceExpression)
{
// The boxed expression is an argument to a method call.
// This is automatically handled by C#/VB compilers.
node.IsAutoBox = true;
}
else if (containingExpression is BinaryExpression)
{
BinaryExpression binary = containingExpression as BinaryExpression;
// Check for expressions of the type:
// a = B;
// where a is of type object and B is the boxed expression.
if (binary.IsAssignmentExpression && binary.Right.Equals(node))
{
node.IsAutoBox = true;
}
// check for expressions of the type:
// X == null
// X != null
// null == X
// null != X
// where X is the boxed expression and X is of some generic parameter type T
if (binary.IsComparisonExpression && node.BoxedAs.IsGenericParameter)
{
if (binary.Left == node)
{
if (binary.Right is LiteralExpression && (binary.Right as LiteralExpression).Value == null)
{
node.IsAutoBox = true;
}
}
if (binary.Right == node)
{
if (binary.Left is LiteralExpression && (binary.Left as LiteralExpression).Value == null)
{
node.IsAutoBox = true;
}
}
}
}
else if (containingExpression is ReturnExpression)
{
if (context.Method.ReturnType.FullName == "System.Object")
{
node.IsAutoBox = true;
}
else
{
TypeDefinition type = node.BoxedExpression.ExpressionType.Resolve();
if (type != null && type.IsValueType)
{
node.IsAutoBox = true;
}
}
}
else if (containingExpression is YieldReturnExpression)
{
YieldReturnExpression yieldReturn = containingExpression as YieldReturnExpression;
if (yieldReturn.Expression.Equals(node))
{
node.IsAutoBox = true;
}
}
}
// push back the popped expressions
while (removedExpressions.Count > 0)
{
parentExpressions.Push(removedExpressions.Pop());
}
base.VisitBoxExpression(node);
}
public virtual void VisitBoxExpression(BoxExpression node)
{
this.Visit(node.get_BoxedExpression());
return;
}
AstNode TransformByteCode(ILExpression byteCode)
{
object operand = byteCode.Operand;
AstType operandAsTypeRef = AstBuilder.ConvertType(operand as Cecil.TypeReference);
List<Ast.Expression> args = new List<Expression>();
foreach(ILExpression arg in byteCode.Arguments) {
args.Add((Ast.Expression)TransformExpression(arg));
}
Ast.Expression arg1 = args.Count >= 1 ? args[0] : null;
Ast.Expression arg2 = args.Count >= 2 ? args[1] : null;
Ast.Expression arg3 = args.Count >= 3 ? args[2] : null;
switch (byteCode.Code) {
#region Arithmetic
case ILCode.Add:
case ILCode.Add_Ovf:
case ILCode.Add_Ovf_Un:
{
BinaryOperatorExpression boe;
if (byteCode.InferredType is PointerType) {
if (byteCode.Arguments[0].ExpectedType is PointerType) {
arg2 = DivideBySize(arg2, ((PointerType)byteCode.InferredType).ElementType);
boe = new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Add, arg2);
boe.AddAnnotation(IntroduceUnsafeModifier.PointerArithmeticAnnotation);
} else if (byteCode.Arguments[1].ExpectedType is PointerType) {
arg1 = DivideBySize(arg1, ((PointerType)byteCode.InferredType).ElementType);
boe = new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Add, arg2);
boe.AddAnnotation(IntroduceUnsafeModifier.PointerArithmeticAnnotation);
} else {
boe = new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Add, arg2);
}
} else {
boe = new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Add, arg2);
}
boe.AddAnnotation(byteCode.Code == ILCode.Add ? AddCheckedBlocks.UncheckedAnnotation : AddCheckedBlocks.CheckedAnnotation);
return boe;
}
case ILCode.Sub:
case ILCode.Sub_Ovf:
case ILCode.Sub_Ovf_Un:
{
BinaryOperatorExpression boe;
if (byteCode.InferredType is PointerType) {
if (byteCode.Arguments[0].ExpectedType is PointerType) {
arg2 = DivideBySize(arg2, ((PointerType)byteCode.InferredType).ElementType);
boe = new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Subtract, arg2);
boe.WithAnnotation(IntroduceUnsafeModifier.PointerArithmeticAnnotation);
} else {
boe = new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Subtract, arg2);
}
} else {
boe = new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Subtract, arg2);
}
boe.AddAnnotation(byteCode.Code == ILCode.Sub ? AddCheckedBlocks.UncheckedAnnotation : AddCheckedBlocks.CheckedAnnotation);
return boe;
}
case ILCode.Div: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Divide, arg2);
case ILCode.Div_Un: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Divide, arg2);
case ILCode.Mul: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Multiply, arg2).WithAnnotation(AddCheckedBlocks.UncheckedAnnotation);
case ILCode.Mul_Ovf: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Multiply, arg2).WithAnnotation(AddCheckedBlocks.CheckedAnnotation);
case ILCode.Mul_Ovf_Un: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Multiply, arg2).WithAnnotation(AddCheckedBlocks.CheckedAnnotation);
case ILCode.Rem: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Modulus, arg2);
case ILCode.Rem_Un: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Modulus, arg2);
case ILCode.And: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.BitwiseAnd, arg2);
case ILCode.Or: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.BitwiseOr, arg2);
case ILCode.Xor: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.ExclusiveOr, arg2);
case ILCode.Shl: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.ShiftLeft, arg2);
case ILCode.Shr: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.ShiftRight, arg2);
case ILCode.Shr_Un: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.ShiftRight, arg2);
case ILCode.Neg: return new Ast.UnaryOperatorExpression(UnaryOperatorType.Minus, arg1).WithAnnotation(AddCheckedBlocks.UncheckedAnnotation);
case ILCode.Not: return new Ast.UnaryOperatorExpression(UnaryOperatorType.BitNot, arg1);
case ILCode.PostIncrement:
case ILCode.PostIncrement_Ovf:
case ILCode.PostIncrement_Ovf_Un:
{
if (arg1 is DirectionExpression)
arg1 = ((DirectionExpression)arg1).Expression.Detach();
var uoe = new Ast.UnaryOperatorExpression(
(int)byteCode.Operand > 0 ? UnaryOperatorType.PostIncrement : UnaryOperatorType.PostDecrement, arg1);
uoe.AddAnnotation((byteCode.Code == ILCode.PostIncrement) ? AddCheckedBlocks.UncheckedAnnotation : AddCheckedBlocks.CheckedAnnotation);
return uoe;
}
#endregion
#region Arrays
case ILCode.Newarr: {
var ace = new Ast.ArrayCreateExpression();
ace.Type = operandAsTypeRef;
ComposedType ct = operandAsTypeRef as ComposedType;
if (ct != null) {
// change "new (int[,])[10] to new int[10][,]"
ct.ArraySpecifiers.MoveTo(ace.AdditionalArraySpecifiers);
}
if (byteCode.Code == ILCode.InitArray) {
ace.Initializer = new ArrayInitializerExpression();
ace.Initializer.Elements.AddRange(args);
} else {
ace.Arguments.Add(arg1);
}
return ace;
}
case ILCode.InitArray: {
var ace = new Ast.ArrayCreateExpression();
ace.Type = operandAsTypeRef;
ComposedType ct = operandAsTypeRef as ComposedType;
var arrayType = (ArrayType) operand;
if (ct != null)
{
// change "new (int[,])[10] to new int[10][,]"
ct.ArraySpecifiers.MoveTo(ace.AdditionalArraySpecifiers);
ace.Initializer = new ArrayInitializerExpression();
}
var newArgs = new List<Expression>();
foreach (var arrayDimension in arrayType.Dimensions.Skip(1).Reverse())
{
int length = (int)arrayDimension.UpperBound - (int)arrayDimension.LowerBound;
for (int j = 0; j < args.Count; j += length)
{
var child = new ArrayInitializerExpression();
child.Elements.AddRange(args.GetRange(j, length));
newArgs.Add(child);
}
var temp = args;
args = newArgs;
newArgs = temp;
newArgs.Clear();
}
ace.Initializer.Elements.AddRange(args);
return ace;
}
case ILCode.Ldlen: return arg1.Member("Length");
case ILCode.Ldelem_I:
case ILCode.Ldelem_I1:
case ILCode.Ldelem_I2:
case ILCode.Ldelem_I4:
case ILCode.Ldelem_I8:
case ILCode.Ldelem_U1:
case ILCode.Ldelem_U2:
case ILCode.Ldelem_U4:
case ILCode.Ldelem_R4:
case ILCode.Ldelem_R8:
case ILCode.Ldelem_Ref:
case ILCode.Ldelem_Any:
return arg1.Indexer(arg2);
case ILCode.Ldelema:
return MakeRef(arg1.Indexer(arg2));
case ILCode.Stelem_I:
case ILCode.Stelem_I1:
case ILCode.Stelem_I2:
case ILCode.Stelem_I4:
case ILCode.Stelem_I8:
case ILCode.Stelem_R4:
case ILCode.Stelem_R8:
case ILCode.Stelem_Ref:
case ILCode.Stelem_Any:
return new Ast.AssignmentExpression(arg1.Indexer(arg2), arg3);
case ILCode.CompoundAssignment:
{
CastExpression cast = arg1 as CastExpression;
var boe = cast != null ? (BinaryOperatorExpression)cast.Expression : arg1 as BinaryOperatorExpression;
// AssignmentExpression doesn't support overloaded operators so they have to be processed to BinaryOperatorExpression
if (boe == null) {
var tmp = new ParenthesizedExpression(arg1);
ReplaceMethodCallsWithOperators.ProcessInvocationExpression((InvocationExpression)arg1);
boe = (BinaryOperatorExpression)tmp.Expression;
}
var assignment = new Ast.AssignmentExpression {
Left = boe.Left.Detach(),
Operator = ReplaceMethodCallsWithOperators.GetAssignmentOperatorForBinaryOperator(boe.Operator),
Right = boe.Right.Detach()
}.CopyAnnotationsFrom(boe);
// We do not mark the resulting assignment as RestoreOriginalAssignOperatorAnnotation, because
// the operator cannot be translated back to the expanded form (as the left-hand expression
// would be evaluated twice, and might have side-effects)
if (cast != null) {
cast.Expression = assignment;
return cast;
} else {
return assignment;
}
}
#endregion
#region Comparison
case ILCode.Ceq: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.Equality, arg2);
case ILCode.Cne: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.InEquality, arg2);
case ILCode.Cgt: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.GreaterThan, arg2);
case ILCode.Cgt_Un: {
// can also mean Inequality, when used with object references
TypeReference arg1Type = byteCode.Arguments[0].InferredType;
if (arg1Type != null && !arg1Type.IsValueType) goto case ILCode.Cne;
goto case ILCode.Cgt;
}
case ILCode.Cle_Un: {
// can also mean Equality, when used with object references
TypeReference arg1Type = byteCode.Arguments[0].InferredType;
if (arg1Type != null && !arg1Type.IsValueType) goto case ILCode.Ceq;
goto case ILCode.Cle;
}
case ILCode.Cle: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.LessThanOrEqual, arg2);
case ILCode.Cge_Un:
case ILCode.Cge: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.GreaterThanOrEqual, arg2);
case ILCode.Clt_Un:
case ILCode.Clt: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.LessThan, arg2);
#endregion
#region Logical
case ILCode.LogicNot: return new Ast.UnaryOperatorExpression(UnaryOperatorType.Not, arg1);
case ILCode.LogicAnd: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.ConditionalAnd, arg2);
case ILCode.LogicOr: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.ConditionalOr, arg2);
case ILCode.TernaryOp: return new Ast.ConditionalExpression() { Condition = arg1, TrueExpression = arg2, FalseExpression = arg3 };
case ILCode.NullCoalescing: return new Ast.BinaryOperatorExpression(arg1, BinaryOperatorType.NullCoalescing, arg2);
#endregion
#region Branch
case ILCode.Br: return new Ast.GotoStatement(((ILLabel)byteCode.Operand).Name);
case ILCode.Brtrue:
return new Ast.IfElseStatement() {
Condition = arg1,
TrueStatement = new BlockStatement() {
new Ast.GotoStatement(((ILLabel)byteCode.Operand).Name)
}
};
case ILCode.LoopOrSwitchBreak: return new Ast.BreakStatement();
case ILCode.LoopContinue: return new Ast.ContinueStatement();
#endregion
#region Conversions
case ILCode.Conv_I1:
case ILCode.Conv_I2:
case ILCode.Conv_I4:
case ILCode.Conv_I8:
case ILCode.Conv_U1:
case ILCode.Conv_U2:
case ILCode.Conv_U4:
case ILCode.Conv_U8:
case ILCode.Conv_I:
case ILCode.Conv_U:
{
// conversion was handled by Convert() function using the info from type analysis
CastExpression cast = arg1 as CastExpression;
if (cast != null) {
cast.AddAnnotation(AddCheckedBlocks.UncheckedAnnotation);
}
return arg1;
}
case ILCode.Conv_R4:
case ILCode.Conv_R8:
case ILCode.Conv_R_Un: // TODO
return arg1;
case ILCode.Conv_Ovf_I1:
case ILCode.Conv_Ovf_I2:
case ILCode.Conv_Ovf_I4:
case ILCode.Conv_Ovf_I8:
case ILCode.Conv_Ovf_U1:
case ILCode.Conv_Ovf_U2:
case ILCode.Conv_Ovf_U4:
case ILCode.Conv_Ovf_U8:
case ILCode.Conv_Ovf_I1_Un:
case ILCode.Conv_Ovf_I2_Un:
case ILCode.Conv_Ovf_I4_Un:
case ILCode.Conv_Ovf_I8_Un:
case ILCode.Conv_Ovf_U1_Un:
case ILCode.Conv_Ovf_U2_Un:
case ILCode.Conv_Ovf_U4_Un:
case ILCode.Conv_Ovf_U8_Un:
case ILCode.Conv_Ovf_I:
case ILCode.Conv_Ovf_U:
case ILCode.Conv_Ovf_I_Un:
case ILCode.Conv_Ovf_U_Un:
{
// conversion was handled by Convert() function using the info from type analysis
CastExpression cast = arg1 as CastExpression;
if (cast != null) {
cast.AddAnnotation(AddCheckedBlocks.CheckedAnnotation);
}
return arg1;
}
case ILCode.Unbox_Any:
var unboxa = new UnBoxExpression();
unboxa.Expression = arg1;
unboxa.type = operandAsTypeRef.Clone();
// unboxing does not require a cast if the argument was an isinst instruction
if (arg1 is AsExpression && byteCode.Arguments[0].Code == ILCode.Isinst && TypeAnalysis.IsSameType(operand as TypeReference, byteCode.Arguments[0].Operand as TypeReference))
return unboxa;
else
return unboxa.CastTo(operandAsTypeRef);
//goto case ILCode.Castclass;
case ILCode.Castclass:
if ((byteCode.Arguments[0].InferredType != null && byteCode.Arguments[0].InferredType.IsGenericParameter) || ((Cecil.TypeReference)operand).IsGenericParameter)
return arg1.CastTo(new PrimitiveType("object")).CastTo(operandAsTypeRef);
else
return arg1.CastTo(operandAsTypeRef);
case ILCode.Isinst:
return arg1.CastAs(operandAsTypeRef);
case ILCode.Box:
var box = new BoxExpression();
box.Expression = arg1;
box.type = operandAsTypeRef.Clone();
return box;
//return arg1;
case ILCode.Unbox:
var unbox = new UnBoxExpression();
unbox.Expression = arg1;
unbox.type = operandAsTypeRef.Clone();
return MakeRef(unbox.CastTo(operandAsTypeRef));
//return MakeRef(arg1.CastTo(operandAsTypeRef));
#endregion
#region Indirect
case ILCode.Ldind_Ref:
case ILCode.Ldobj:
if (arg1 is DirectionExpression)
return ((DirectionExpression)arg1).Expression.Detach();
else
return new UnaryOperatorExpression(UnaryOperatorType.Dereference, arg1);
case ILCode.Stind_Ref:
case ILCode.Stobj:
if (arg1 is DirectionExpression)
return new AssignmentExpression(((DirectionExpression)arg1).Expression.Detach(), arg2);
else
return new AssignmentExpression(new UnaryOperatorExpression(UnaryOperatorType.Dereference, arg1), arg2);
#endregion
case ILCode.Arglist:
return new UndocumentedExpression { UndocumentedExpressionType = UndocumentedExpressionType.ArgListAccess };
case ILCode.Break: return InlineAssembly(byteCode, args);
case ILCode.Call:
case ILCode.CallGetter:
case ILCode.CallSetter:
return TransformCall(false, byteCode, args);
case ILCode.Callvirt:
case ILCode.CallvirtGetter:
case ILCode.CallvirtSetter:
return TransformCall(true, byteCode, args);
case ILCode.Ldftn: {
Cecil.MethodReference cecilMethod = ((MethodReference)operand);
var expr = new Ast.IdentifierExpression(cecilMethod.Name);
expr.TypeArguments.AddRange(ConvertTypeArguments(cecilMethod));
expr.AddAnnotation(cecilMethod);
return new IdentifierExpression("ldftn").Invoke(expr)
.WithAnnotation(new Transforms.DelegateConstruction.Annotation(false));
}
case ILCode.Ldvirtftn: {
Cecil.MethodReference cecilMethod = ((MethodReference)operand);
var expr = new Ast.IdentifierExpression(cecilMethod.Name);
expr.TypeArguments.AddRange(ConvertTypeArguments(cecilMethod));
expr.AddAnnotation(cecilMethod);
return new IdentifierExpression("ldvirtftn").Invoke(expr)
.WithAnnotation(new Transforms.DelegateConstruction.Annotation(true));
}
case ILCode.Calli: return InlineAssembly(byteCode, args);
case ILCode.Ckfinite: return InlineAssembly(byteCode, args);
case ILCode.Constrained: return InlineAssembly(byteCode, args);
case ILCode.Cpblk: return InlineAssembly(byteCode, args);
case ILCode.Cpobj: return InlineAssembly(byteCode, args);
case ILCode.Dup: return arg1;
case ILCode.Endfilter: return InlineAssembly(byteCode, args);
case ILCode.Endfinally: return null;
case ILCode.Initblk: return InlineAssembly(byteCode, args);
case ILCode.Initobj: return InlineAssembly(byteCode, args);
case ILCode.DefaultValue:
return MakeDefaultValue((TypeReference)operand);
case ILCode.Jmp: return InlineAssembly(byteCode, args);
case ILCode.Ldc_I4:
return AstBuilder.MakePrimitive((int)operand, byteCode.InferredType);
case ILCode.Ldc_I8:
return AstBuilder.MakePrimitive((long)operand, byteCode.InferredType);
case ILCode.Ldc_R4:
case ILCode.Ldc_R8:
case ILCode.Ldc_Decimal:
return new Ast.PrimitiveExpression(operand);
case ILCode.Ldfld:
if (arg1 is DirectionExpression)
arg1 = ((DirectionExpression)arg1).Expression.Detach();
return arg1.Member(((FieldReference) operand).Name).WithAnnotation(operand);
case ILCode.Ldsfld:
return AstBuilder.ConvertType(((FieldReference)operand).DeclaringType)
.Member(((FieldReference)operand).Name).WithAnnotation(operand);
case ILCode.Stfld:
if (arg1 is DirectionExpression)
arg1 = ((DirectionExpression)arg1).Expression.Detach();
return new AssignmentExpression(arg1.Member(((FieldReference) operand).Name).WithAnnotation(operand), arg2);
case ILCode.Stsfld:
return new AssignmentExpression(
AstBuilder.ConvertType(((FieldReference)operand).DeclaringType)
.Member(((FieldReference)operand).Name).WithAnnotation(operand),
arg1);
case ILCode.Ldflda:
if (arg1 is DirectionExpression)
arg1 = ((DirectionExpression)arg1).Expression.Detach();
return MakeRef(arg1.Member(((FieldReference) operand).Name).WithAnnotation(operand));
case ILCode.Ldsflda:
return MakeRef(
AstBuilder.ConvertType(((FieldReference)operand).DeclaringType)
.Member(((FieldReference)operand).Name).WithAnnotation(operand));
case ILCode.Ldloc: {
ILVariable v = (ILVariable)operand;
if (!v.IsParameter)
localVariablesToDefine.Add((ILVariable)operand);
Expression expr;
if (v.IsParameter && v.OriginalParameter.Index < 0)
expr = new ThisReferenceExpression();
else
expr = new Ast.IdentifierExpression(((ILVariable)operand).Name).WithAnnotation(operand);
return v.IsParameter && v.Type is ByReferenceType ? MakeRef(expr) : expr;
}
case ILCode.Ldloca: {
ILVariable v = (ILVariable)operand;
if (v.IsParameter && v.OriginalParameter.Index < 0)
return MakeRef(new ThisReferenceExpression());
if (!v.IsParameter)
localVariablesToDefine.Add((ILVariable)operand);
return MakeRef(new Ast.IdentifierExpression(((ILVariable)operand).Name).WithAnnotation(operand));
}
case ILCode.Ldnull: return new Ast.NullReferenceExpression();
case ILCode.Ldstr: return new Ast.PrimitiveExpression(operand);
case ILCode.Ldtoken:
if (operand is Cecil.TypeReference) {
return AstBuilder.CreateTypeOfExpression((TypeReference)operand).Member("TypeHandle");
} else {
Expression referencedEntity;
string loadName;
string handleName;
if (operand is Cecil.FieldReference) {
loadName = "fieldof";
handleName = "FieldHandle";
FieldReference fr = (FieldReference)operand;
referencedEntity = AstBuilder.ConvertType(fr.DeclaringType).Member(fr.Name).WithAnnotation(fr);
} else if (operand is Cecil.MethodReference) {
loadName = "methodof";
handleName = "MethodHandle";
MethodReference mr = (MethodReference)operand;
var methodParameters = mr.Parameters.Select(p => new TypeReferenceExpression(AstBuilder.ConvertType(p.ParameterType)));
referencedEntity = AstBuilder.ConvertType(mr.DeclaringType).Invoke(mr.Name, methodParameters).WithAnnotation(mr);
} else {
loadName = "ldtoken";
handleName = "Handle";
referencedEntity = new IdentifierExpression(FormatByteCodeOperand(byteCode.Operand));
}
return new IdentifierExpression(loadName).Invoke(referencedEntity).WithAnnotation(new LdTokenAnnotation()).Member(handleName);
}
case ILCode.Leave: return new GotoStatement() { Label = ((ILLabel)operand).Name };
case ILCode.Localloc:
{
PointerType ptrType = byteCode.InferredType as PointerType;
TypeReference type;
if (ptrType != null) {
type = ptrType.ElementType;
} else {
type = typeSystem.Byte;
}
return new StackAllocExpression {
Type = AstBuilder.ConvertType(type),
CountExpression = DivideBySize(arg1, type)
};
}
case ILCode.Mkrefany:
{
DirectionExpression dir = arg1 as DirectionExpression;
if (dir != null) {
return new UndocumentedExpression {
UndocumentedExpressionType = UndocumentedExpressionType.MakeRef,
Arguments = { dir.Expression.Detach() }
};
} else {
return InlineAssembly(byteCode, args);
}
}
case ILCode.Refanytype:
return new UndocumentedExpression {
UndocumentedExpressionType = UndocumentedExpressionType.RefType,
Arguments = { arg1 }
}.Member("TypeHandle");
case ILCode.Refanyval:
return MakeRef(
new UndocumentedExpression {
UndocumentedExpressionType = UndocumentedExpressionType.RefValue,
Arguments = { arg1, new TypeReferenceExpression(operandAsTypeRef) }
});
case ILCode.Newobj: {
Cecil.TypeReference declaringType = ((MethodReference)operand).DeclaringType;
if (declaringType is ArrayType) {
ComposedType ct = AstBuilder.ConvertType((ArrayType)declaringType) as ComposedType;
if (ct != null && ct.ArraySpecifiers.Count >= 1) {
var ace = new Ast.ArrayCreateExpression();
ct.ArraySpecifiers.First().Remove();
ct.ArraySpecifiers.MoveTo(ace.AdditionalArraySpecifiers);
ace.Type = ct;
ace.Arguments.AddRange(args);
return ace;
}
}
if (declaringType.IsAnonymousType()) {
MethodDefinition ctor = ((MethodReference)operand).Resolve();
if (methodDef != null) {
AnonymousTypeCreateExpression atce = new AnonymousTypeCreateExpression();
if (CanInferAnonymousTypePropertyNamesFromArguments(args, ctor.Parameters)) {
atce.Initializers.AddRange(args);
} else {
for (int i = 0; i < args.Count; i++) {
atce.Initializers.Add(
new NamedExpression {
Identifier = ctor.Parameters[i].Name,
Expression = args[i]
});
}
}
return atce;
}
}
var oce = new Ast.ObjectCreateExpression();
oce.Type = AstBuilder.ConvertType(declaringType);
oce.Arguments.AddRange(args);
return oce.WithAnnotation(operand);
}
case ILCode.No: return InlineAssembly(byteCode, args);
case ILCode.Nop: return null;
case ILCode.Pop: return arg1;
case ILCode.Readonly: return InlineAssembly(byteCode, args);
case ILCode.Ret:
if (methodDef.ReturnType.FullName != "System.Void") {
return new Ast.ReturnStatement { Expression = arg1 };
} else {
return new Ast.ReturnStatement();
}
case ILCode.Rethrow: return new Ast.ThrowStatement();
case ILCode.Sizeof: return new Ast.SizeOfExpression { Type = operandAsTypeRef };
case ILCode.Stloc: {
ILVariable locVar = (ILVariable)operand;
if (!locVar.IsParameter)
localVariablesToDefine.Add(locVar);
return new Ast.AssignmentExpression(new Ast.IdentifierExpression(locVar.Name).WithAnnotation(locVar), arg1);
}
case ILCode.Switch: return InlineAssembly(byteCode, args);
case ILCode.Tail: return InlineAssembly(byteCode, args);
case ILCode.Throw: return new Ast.ThrowStatement { Expression = arg1 };
case ILCode.Unaligned: return InlineAssembly(byteCode, args);
case ILCode.Volatile: return InlineAssembly(byteCode, args);
case ILCode.YieldBreak:
return new Ast.YieldBreakStatement();
case ILCode.YieldReturn:
return new Ast.YieldReturnStatement { Expression = arg1 };
case ILCode.InitObject:
case ILCode.InitCollection:
{
ArrayInitializerExpression initializer = new ArrayInitializerExpression();
for (int i = 1; i < args.Count; i++) {
Match m = objectInitializerPattern.Match(args[i]);
if (m.Success) {
MemberReferenceExpression mre = m.Get<MemberReferenceExpression>("left").Single();
initializer.Elements.Add(
new NamedExpression {
Identifier = mre.MemberName,
Expression = m.Get<Expression>("right").Single().Detach()
}.CopyAnnotationsFrom(mre));
} else {
m = collectionInitializerPattern.Match(args[i]);
if (m.Success) {
if (m.Get("arg").Count() == 1) {
initializer.Elements.Add(m.Get<Expression>("arg").Single().Detach());
} else {
ArrayInitializerExpression argList = new ArrayInitializerExpression();
foreach (var expr in m.Get<Expression>("arg")) {
argList.Elements.Add(expr.Detach());
}
initializer.Elements.Add(argList);
}
} else {
initializer.Elements.Add(args[i]);
}
}
}
ObjectCreateExpression oce = arg1 as ObjectCreateExpression;
DefaultValueExpression dve = arg1 as DefaultValueExpression;
if (oce != null) {
oce.Initializer = initializer;
return oce;
} else if (dve != null) {
oce = new ObjectCreateExpression(dve.Type.Detach());
oce.CopyAnnotationsFrom(dve);
oce.Initializer = initializer;
return oce;
} else {
return new AssignmentExpression(arg1, initializer);
}
}
case ILCode.InitializedObject:
return new InitializedObjectExpression();
case ILCode.Wrap:
return arg1.WithAnnotation(PushNegation.LiftedOperatorAnnotation);
case ILCode.AddressOf:
return MakeRef(arg1);
case ILCode.ExpressionTreeParameterDeclarations:
args[args.Count - 1].AddAnnotation(new ParameterDeclarationAnnotation(byteCode));
return args[args.Count - 1];
case ILCode.Await:
return new UnaryOperatorExpression(UnaryOperatorType.Await, arg1);
case ILCode.NullableOf:
case ILCode.ValueOf:
return arg1;
default:
throw new Exception("Unknown OpCode: " + byteCode.Code);
}
}
public void VisitBoxExpression(BoxExpression boxExpression)
{
StartNode(boxExpression);
boxExpression.Expression.AcceptVisitor(this);
EndNode(boxExpression);
}
public virtual ICodeNode VisitBoxExpression(BoxExpression node)
{
node.set_BoxedExpression((Expression)this.Visit(node.get_BoxedExpression()));
return(node);
}
public void VisitBoxExpression(BoxExpression boxExpression)
{
VisitChildren(boxExpression);
}
public override void VisitBoxExpression(BoxExpression node)
{
V_0 = new Stack <Expression>();
V_0.Push(this.parentExpressions.Pop());
if (this.parentExpressions.get_Count() > 0)
{
V_1 = this.parentExpressions.Peek();
if (V_1 as MemberReferenceExpresion == null)
{
if (V_1 as MethodInvocationExpression != null || V_1 as FieldReferenceExpression != null || V_1 as PropertyReferenceExpression != null)
{
node.set_IsAutoBox(true);
}
else
{
if (V_1 as BinaryExpression == null)
{
if (V_1 as ReturnExpression == null)
{
if (V_1 as YieldReturnExpression != null && (V_1 as YieldReturnExpression).get_Expression().Equals(node))
{
node.set_IsAutoBox(true);
}
}
else
{
if (!String.op_Equality(this.context.get_Method().get_ReturnType().get_FullName(), "System.Object"))
{
V_4 = node.get_BoxedExpression().get_ExpressionType().Resolve();
if (V_4 != null && V_4.get_IsValueType())
{
node.set_IsAutoBox(true);
}
}
else
{
node.set_IsAutoBox(true);
}
}
}
else
{
V_3 = V_1 as BinaryExpression;
if (V_3.get_IsAssignmentExpression() && V_3.get_Right().Equals(node))
{
node.set_IsAutoBox(true);
}
if (V_3.get_IsComparisonExpression() && node.get_BoxedAs().get_IsGenericParameter())
{
if (V_3.get_Left() == node && V_3.get_Right() as LiteralExpression != null && (V_3.get_Right() as LiteralExpression).get_Value() == null)
{
node.set_IsAutoBox(true);
}
if (V_3.get_Right() == node && V_3.get_Left() as LiteralExpression != null && (V_3.get_Left() as LiteralExpression).get_Value() == null)
{
node.set_IsAutoBox(true);
}
}
}
}
}
else
{
V_2 = this.parentExpressions.Pop() as MemberReferenceExpresion;
V_0.Push(V_2);
if (V_2.get_Member() as MethodReference != null)
{
node.set_IsAutoBox(true);
}
}
}
while (V_0.get_Count() > 0)
{
this.parentExpressions.Push(V_0.Pop());
}
this.VisitBoxExpression(node);
return;
}
