expr.Emit (null);
}
-
- if (target_type == TypeManager.object_type) {
+
+ //
+ // notice that it is possible to write "ValueType v = 1", the ValueType here
+ // is an abstract class, and not really a value type, so we apply the same rules.
+ //
+ if (target_type == TypeManager.object_type || target_type == TypeManager.value_type) {
//
// A pointer type cannot be converted to object
//
return new BoxedCast (expr);
if (expr_type.IsClass || expr_type.IsInterface)
return new EmptyCast (expr, target_type);
- } else if (expr_type.IsSubclassOf (target_type)) {
+ } else if (expr_type.IsSubclassOf (target_type))
return new EmptyCast (expr, target_type);
- } else {
+ else {
// This code is kind of mirrored inside StandardConversionExists
// with the small distinction that we only probe there
return new EmptyCast (expr, target_type);
// from any class-type S to any interface-type T.
- if (expr_type.IsClass && target_type.IsInterface) {
- if (TypeManager.ImplementsInterface (expr_type, target_type))
- return new EmptyCast (expr, target_type);
- else
- return null;
+ if (target_type.IsInterface) {
+ if (TypeManager.ImplementsInterface (expr_type, target_type)){
+ if (expr_type.IsClass)
+ return new EmptyCast (expr, target_type);
+ else if (expr_type.IsValueType)
+ return new BoxedCast (expr);
+ }
}
// from any interface type S to interface-type T.
if (expr_type.IsInterface && target_type.IsInterface) {
-
if (TypeManager.ImplementsInterface (expr_type, target_type))
return new EmptyCast (expr, target_type);
else
return null;
}
- /// <summary>
- /// Handles expressions like this: decimal d; d = 1;
- /// and changes them into: decimal d; d = new System.Decimal (1);
- /// </summary>
- static Expression InternalTypeConstructor (EmitContext ec, Expression expr, Type target)
- {
- ArrayList args = new ArrayList ();
-
- args.Add (new Argument (expr, Argument.AType.Expression));
-
- Expression ne = new New (new TypeExpr (target, Location.Null), args, Location.Null);
-
- return ne.Resolve (ec);
- }
-
/// <summary>
/// Implicit Numeric Conversions.
///
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
if (real_target_type == TypeManager.short_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.byte_type){
//
// From byte to short, ushort, int, uint, long, ulong, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
if (real_target_type == TypeManager.double_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.short_type){
//
// From short to int, long, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.ushort_type){
//
// From ushort to int, uint, long, ulong, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.int32_type){
//
// From int to long, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.uint32_type){
//
// From uint to long, ulong, float, double
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un,
OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.int64_type){
//
// From long/ulong to float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.uint64_type){
//
// From ulong to float, double
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un,
OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.char_type){
//
// From char to ushort, int, uint, long, ulong, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
if (real_target_type == TypeManager.double_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.float_type){
//
// float to double
// from ImplicitReferenceConversion so make sure code remains in sync
// from any class-type S to any interface-type T.
- if (expr_type.IsClass && target_type.IsInterface) {
+ if (target_type.IsInterface) {
if (TypeManager.ImplementsInterface (expr_type, target_type))
return true;
}
return true;
}
+ if (target_type == TypeManager.void_ptr_type && expr_type.IsPointer)
+ return true;
+
return false;
}
//
if (apply_explicit_conv_rules)
return FindMostEncompassedType (tgt_types_set);
- else {
- Console.WriteLine ("Here with: " + tgt_types_set.Count);
+ else
return FindMostEncompassingType (tgt_types_set);
- }
}
/// <summary>
return new ULongConstant ((ulong) value);
}
- if (value == 0 && ic is IntLiteral && TypeManager.IsEnumType (target_type))
- return new EnumConstant (ic, target_type);
-
+ if (value == 0 && ic is IntLiteral && TypeManager.IsEnumType (target_type)){
+ Type underlying = TypeManager.EnumToUnderlying (target_type);
+ Constant e = (Constant) ic;
+
+ //
+ // Possibly, we need to create a different 0 literal before passing
+ // to EnumConstant
+ //n
+ if (underlying == TypeManager.int64_type)
+ e = new LongLiteral (0);
+ else if (underlying == TypeManager.uint64_type)
+ e = new ULongLiteral (0);
+
+ return new EnumConstant (e, target_type);
+ }
return null;
}
"Double literal cannot be implicitly converted to " +
"float type, use F suffix to create a float literal");
}
-
+
Error_CannotConvertImplicit (loc, source.Type, target_type);
return null;
/// <summary>
/// Performs the explicit numeric conversions
/// </summary>
- static Expression ConvertNumericExplicit (EmitContext ec, Expression expr, Type target_type)
+ static Expression ConvertNumericExplicit (EmitContext ec, Expression expr, Type target_type, Location loc)
{
Type expr_type = expr.Type;
if (TypeManager.IsEnumType (real_target_type))
real_target_type = TypeManager.EnumToUnderlying (real_target_type);
- if (StandardConversionExists (expr, real_target_type))
- return new EmptyCast (expr, target_type);
+ if (StandardConversionExists (expr, real_target_type)){
+ Expression ce = ConvertImplicitStandard (ec, expr, real_target_type, loc);
+
+ if (real_target_type != target_type)
+ return new EmptyCast (ce, target_type);
+ return ce;
+ }
if (expr_type == TypeManager.sbyte_type){
//
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R4_U8);
if (real_target_type == TypeManager.char_type)
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R4_CH);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.double_type){
//
// From double to byte, byte, short,
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R8_CH);
if (real_target_type == TypeManager.float_type)
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R8_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
}
// decimal is taken care of by the op_Explicit methods.
if (ne != null)
return ne;
- ne = ConvertNumericExplicit (ec, expr, target_type);
+ ne = ConvertNumericExplicit (ec, expr, target_type, loc);
if (ne != null)
return ne;
if (t != null)
return t;
- return ConvertNumericExplicit (ec, e, target_type);
+ t = ConvertNumericExplicit (ec, e, target_type, loc);
+ if (t != null)
+ return t;
+
+ Error_CannotConvertType (loc, expr_type, target_type);
+ return null;
}
ne = ConvertReferenceExplicit (expr, target_type);
if (ci != null)
return ci;
- ce = ConvertNumericExplicit (ec, e, target_type);
+ ce = ConvertNumericExplicit (ec, e, target_type, loc);
if (ce != null)
return ce;
//
if (ne != null)
return ne;
- ne = ConvertNumericExplicit (ec, expr, target_type);
+ ne = ConvertNumericExplicit (ec, expr, target_type, l);
if (ne != null)
return ne;
//
public static void StoreFromPtr (ILGenerator ig, Type type)
{
- if (type.IsEnum)
+ if (TypeManager.IsEnumType (type))
type = TypeManager.EnumToUnderlying (type);
if (type == TypeManager.int32_type || type == TypeManager.uint32_type)
ig.Emit (OpCodes.Stind_I4);
t == TypeManager.char_type ||
t == TypeManager.ushort_type)
return 2;
+ else if (t == TypeManager.decimal_type)
+ return 16;
else
return 0;
}
Type t;
string alias_value;
+ if (ec.ResolvingTypeTree){
+ int errors = Report.Errors;
+ Type dt = ec.DeclSpace.FindType (loc, Name);
+ if (Report.Errors != errors)
+ return null;
+
+ if (dt != null)
+ return new TypeExpr (dt, loc);
+ }
+
if ((t = RootContext.LookupType (ds, Name, true, loc)) != null)
return new TypeExpr (t, loc);
+
//
// Stage 2 part b: Lookup up if we are an alias to a type
// or a namespace.
return new SimpleName (alias_value, loc);
}
- if (ec.ResolvingTypeTree){
- Type dt = ec.DeclSpace.FindType (Name);
- if (dt != null)
- return new TypeExpr (dt, loc);
- }
-
// No match, maybe our parent can compose us
// into something meaningful.
return this;
public override void Emit (EmitContext ec)
{
- throw new Exception ("Should not happen I think");
+ Report.Error (70, loc, "The event `" + Name + "' can only appear on the left hand side of += or -= (except on the defining type)");
}
public void EmitAddOrRemove (EmitContext ec, Expression source)
projects / mono.git / blobdiff