[Mono-bugs] [Bug 54928][Cos] Changed - implicit operator cannot convert from struct to decimal

bugzilla-daemon@bugzilla.ximian.com bugzilla-daemon@bugzilla.ximian.com
Fri, 27 Feb 2004 11:40:46 -0500 (EST)

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Changed by bmaurer@users.sf.net.


--- shadow/54928	2004-02-27 08:19:55.000000000 -0500
+++ shadow/54928.tmp.9295	2004-02-27 11:40:46.000000000 -0500
@@ -1,14 +1,14 @@
 Bug#: 54928
 Product: Mono/Compilers
 Version: unspecified
+OS: unknown
 OS Details: Win2K
 Status: NEW   
+Severity: Unknown
 Priority: Cosmetic
 Component: C#
 AssignedTo: mono-bugs@ximian.com                            
 ReportedBy: yoonkit@yahoo.com               
 QAContact: mono-bugs@ximian.com
 TargetMilestone: ---
@@ -68,6 +68,34 @@
 I havent tried for other datatypes... 
 e.g. int -> decimal, double -> decimal, etc.
 Yoon Kit.
+------- Additional Comments From bmaurer@users.sf.net  2004-02-27 11:40 -------
+A user-defined implicit conversion from type S to type T is processed 
+as follows:
+Find the set of types, D, from which user-defined conversion 
+operators will be considered....
+Find the set of applicable user-defined conversion operators, U. This 
+set consists of the user-defined implicit conversion operators 
+declared by the classes or structs in D that convert from a type 
+encompassing S to a type encompassed by T.
+Find the most specific source type, SX, of the operators in U: ...
+Find the most specific target type, TX, of the operators in U: ...
+[if U has > 1 op], the user-defined conversion is applied: 
+If S is not SX, then a standard implicit conversion from S to SX is 
+The most specific user-defined conversion operator is invoked to 
+convert from SX to TX. 
+If TX is not T, then a standard implicit conversion from TX to T is 
+So, we are missing the "if TX is not T" clause. I think the "S is not 
+SX" is already covered because the source always has to be either S 
+or a parent class of S. I am pretty sure we already cover this 
+situation. However, TX -> T could be *any* implict conversion.