Discussion of these changes can be found on the Mercury developers
mailing list archives from June 2018.
COPYING.LIB:
Add a special linking exception to the LGPL.
*:
Update references to COPYING.LIB.
Clean up some minor errors that have accumulated in copyright
messages.
Estimated hours taken: 2
Branches: main
Override Object#equals for Mercury enumerations in the Java grades
and document that this should be used for equality testing in Java
code. The problem with using == is that instances might not have
the same addresses if they are serialized and then deserialized.
MercuryEnum is now a class and not an interface.
compiler/ml_type_gen.m:
Inherit the MercuryEnum class in Mercury enumerations
instead of implementing the MercuryEnum interface.
compiler/mlds_to_java.m:
Don't output the MR_value member in Java classes that correspond to
Mercury enumerations. This member is now inherited from MercuryEnum.
Don't mangle classes in the Mercury runtime.
doc/reference_manual.texi:
Document that the equals method should be used for exported
Mercury enumerations.
java/runtime/MercuryEnum.java:
Make MercuryEnum a class and implement the equals method.
Also implement the hashcode method.
Branches: main
Make Java classes corresponding to Mercury types automatically serialisable.
java/runtime/MercuryType.java:
Make MercuryType extend java.io.Serializable.
compiler/mlds_to_java.m:
java/runtime/MercuryEnum.java:
Add a MercuryEnum interface which is implemented by classes
corresponding to Mercury enumerations. Previously enumerations
didn't implement MercuryType.
compiler/ml_type_gen.m:
Make enumeration classes implement MercuryType and MercuryEnum.
library/builtin.m:
Make builtin.copy check for MercuryEnum instead of relying on
enumeration classes not to implement MercuryType. This is not
strictly necessary but avoids copying instances of enumeration
classes.
