//
// A container class for all the conversion operations
//
- public class Convert {
+ static class Convert {
#if GMCS_SOURCE
- static bool TypeParameter_to_Null (Type target_type)
- {
- GenericConstraints gc = TypeManager.GetTypeParameterConstraints (target_type);
- if (gc == null)
- return false;
-
- if (gc.HasReferenceTypeConstraint)
- return true;
- if (gc.HasClassConstraint && !TypeManager.IsValueType (gc.ClassConstraint))
- return true;
-
- return false;
- }
-
static Type TypeParam_EffectiveBaseType (GenericConstraints gc)
{
ArrayList list = new ArrayList ();
return false;
}
- static public bool ImplicitBoxingConversionExists (Expression expr, Type target_type,
+ public static bool ImplicitBoxingConversionExists (Expression expr, Type target_type,
out bool use_class_cast)
{
Type expr_type = expr.Type;
/// expr is the expression to convert, returns a new expression of type
/// target_type or null if an implicit conversion is not possible.
/// </summary>
- static public Expression ImplicitNumericConversion (Expression expr,
- Type target_type)
+ public static Expression ImplicitNumericConversion (Expression expr, Type target_type)
{
- Type expr_type = expr.Type;
- Type real_target_type = target_type;
+ return ImplicitNumericConversion (expr, expr.Type, target_type);
+ }
+ static Expression ImplicitNumericConversion (Expression expr, Type expr_type, Type target_type)
+ {
if (expr_type == TypeManager.sbyte_type){
//
// From sbyte to short, int, long, float, double, decimal
//
- if (real_target_type == TypeManager.int32_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I4);
- if (real_target_type == TypeManager.int64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
- if (real_target_type == TypeManager.double_type)
- 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.short_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
- if (real_target_type == TypeManager.decimal_type)
- return new CastToDecimal (expr);
+ if (target_type == TypeManager.int32_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I4);
+ if (target_type == TypeManager.int64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.short_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.byte_type){
//
// From byte to short, ushort, int, uint, long, ulong, float, double, decimal
//
- if (real_target_type == TypeManager.int32_type || real_target_type == TypeManager.uint32_type ||
- real_target_type == TypeManager.short_type || real_target_type == TypeManager.ushort_type)
- return EmptyCast.Create (expr, target_type);
+ if (target_type == TypeManager.int32_type || target_type == TypeManager.uint32_type ||
+ target_type == TypeManager.short_type || target_type == TypeManager.ushort_type)
+ return expr == null ? EmptyExpression.Null : EmptyCast.Create (expr, target_type);
- if (real_target_type == TypeManager.uint64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
- if (real_target_type == TypeManager.int64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
- if (real_target_type == TypeManager.float_type)
- 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 new CastToDecimal (expr);
+ if (target_type == TypeManager.uint64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
+ if (target_type == TypeManager.int64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.short_type){
//
// From short to int, long, float, double, decimal
//
- if (real_target_type == TypeManager.int32_type)
- return EmptyCast.Create (expr, target_type);
- if (real_target_type == TypeManager.int64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
- if (real_target_type == TypeManager.double_type)
- 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 new CastToDecimal (expr);
+ if (target_type == TypeManager.int32_type)
+ return expr == null ? EmptyExpression.Null : EmptyCast.Create (expr, target_type);
+ if (target_type == TypeManager.int64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.ushort_type){
//
// From ushort to int, uint, long, ulong, float, double, decimal
//
- if (real_target_type == TypeManager.int32_type || real_target_type == TypeManager.uint32_type)
- return EmptyCast.Create (expr, target_type);
+ if (target_type == TypeManager.int32_type || target_type == TypeManager.uint32_type)
+ return expr == null ? EmptyExpression.Null : EmptyCast.Create (expr, target_type);
- if (real_target_type == TypeManager.uint64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
- if (real_target_type == TypeManager.int64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
- if (real_target_type == TypeManager.double_type)
- 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 new CastToDecimal (expr);
+ if (target_type == TypeManager.uint64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
+ if (target_type == TypeManager.int64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.int32_type){
//
// From int to long, float, double, decimal
//
- if (real_target_type == TypeManager.int64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
- if (real_target_type == TypeManager.double_type)
- 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 new CastToDecimal (expr);
+ if (target_type == TypeManager.int64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.uint32_type){
//
// From uint to long, ulong, float, double, decimal
//
- if (real_target_type == TypeManager.int64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
- if (real_target_type == TypeManager.uint64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
- if (real_target_type == TypeManager.double_type)
- return new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R8);
- if (real_target_type == TypeManager.float_type)
- return new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return new CastToDecimal (expr);
+ if (target_type == TypeManager.int64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
+ if (target_type == TypeManager.uint64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.int64_type){
//
// From long/ulong to float, double
//
- if (real_target_type == TypeManager.double_type)
- 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 new CastToDecimal (expr);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.uint64_type){
//
// From ulong to float, double
//
- if (real_target_type == TypeManager.double_type)
- return new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R8);
- if (real_target_type == TypeManager.float_type)
- return new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return new CastToDecimal (expr);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un), target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.char_type){
//
// From char to ushort, int, uint, long, ulong, float, double, decimal
//
- if ((real_target_type == TypeManager.ushort_type) ||
- (real_target_type == TypeManager.int32_type) ||
- (real_target_type == TypeManager.uint32_type))
- return EmptyCast.Create (expr, target_type);
- if (real_target_type == TypeManager.uint64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
- if (real_target_type == TypeManager.int64_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
- if (real_target_type == TypeManager.float_type)
- 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 new CastToDecimal (expr);
+ if ((target_type == TypeManager.ushort_type) ||
+ (target_type == TypeManager.int32_type) ||
+ (target_type == TypeManager.uint32_type))
+ return expr == null ? EmptyExpression.Null : EmptyCast.Create (expr, target_type);
+ if (target_type == TypeManager.uint64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_U8);
+ if (target_type == TypeManager.int64_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ if (target_type == TypeManager.float_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.decimal_type)
+ return expr == null ? EmptyExpression.Null : new CastToDecimal (expr);
} else if (expr_type == TypeManager.float_type){
//
// float to double
//
- if (real_target_type == TypeManager.double_type)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (target_type == TypeManager.double_type)
+ return expr == null ? EmptyExpression.Null : new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
}
return null;
/// </summary>
public static bool ImplicitConversionExists (EmitContext ec, Expression expr, Type target_type)
{
-#if GMCS_SOURCE
if (expr is NullLiteral) {
- if (TypeManager.IsGenericParameter (target_type))
- return TypeParameter_to_Null (target_type);
-
- if (TypeManager.IsNullableType (target_type))
- return true;
+ return ((NullLiteral)expr).ConvertImplicitly (target_type) != null;
}
-#endif
+
if (ImplicitStandardConversionExists (expr, target_type))
return true;
if (TypeManager.IsEqual (expr_type, target_type))
return true;
-
// First numeric conversions
-
- if (expr_type == TypeManager.sbyte_type){
- //
- // From sbyte to short, int, long, float, double, decimal
- //
- if ((target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.short_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.byte_type){
- //
- // From byte to short, ushort, int, uint, long, ulong, float, double, decimal
- //
- if ((target_type == TypeManager.short_type) ||
- (target_type == TypeManager.ushort_type) ||
- (target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.uint32_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.short_type){
- //
- // From short to int, long, double, float, decimal
- //
- if ((target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.ushort_type){
- //
- // From ushort to int, uint, long, ulong, double, float, decimal
- //
- if ((target_type == TypeManager.uint32_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.int32_type){
- //
- // From int to long, double, float, decimal
- //
- if ((target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.uint32_type){
- //
- // From uint to long, ulong, double, float, decimal
- //
- if ((target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if ((expr_type == TypeManager.uint64_type) ||
- (expr_type == TypeManager.int64_type)) {
- //
- // From long/ulong to double, float, decimal
- //
- if ((target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.char_type){
- //
- // From char to ushort, int, uint, ulong, long, float, double, decimal
- //
- if ((target_type == TypeManager.ushort_type) ||
- (target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.uint32_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.float_type){
- //
- // float to double
- //
- if (target_type == TypeManager.double_type)
- return true;
- }
+ if (ImplicitNumericConversion (null, expr_type, target_type) != null)
+ return true;
if (ImplicitReferenceConversionExists (expr, target_type))
return true;
return c;
}
- e = ImplicitNumericConversion (expr, target_type);
+ e = ImplicitNumericConversion (expr, expr_type, target_type);
if (e != null)
return e;
projects / mono.git / blobdiff