This fixes Mantis bug #486.
compiler/parse_pragma.m:
Read in the name of the type in a foreign enum in whatever qualified
form it is in the source code, and then try to implicitly qualify it,
generating a specific error message if that attempt is unsuccessful.
compiler/parse_sym_name.m:
To make the above possible, expose the code that does the
implicit qualification. Do so not just in the form now needed
by parse_pragma.m, but in the other forms used by other predicates
in parse_sym_name.m as well, since they probably will be needed
sooner or later. (The lack of such separated-out capability
is what led to the code that caused bug 486 in the first place.)
Avoid an unneeded asymmetry by providing mechanisms to parse
implicitly qualified sym_names without arguments, as well as
with arguments.
compiler/parse_util.m:
Give several of the predicates involved in the above more expressive names.
compiler/parse_inst_mode_defn.m:
compiler/parse_type_defn.m:
compiler/parse_type_repn.m:
compiler/recompilation.check.m:
Conform to the changes above.
compiler/error_util.m:
Fix a bug that silently deleted the newly-added simplest_specs,
which this diff uses for the first time. Add determinism requirements
to avoid similar problems in the future.
compiler/add_foreign_enum.m:
Note that the old code that diagnosed attempts to define foreign_enums
for types in other modules should not be needed anymore.
tests/invalid/foreign_enum_import.err_exp:
Expect the error message now generated by parse_pragma.m,
which is more specific than the one generated by add_foreign_enum.m
until now.
tests/valid/bug486.m:
tests/valid/bug486.window.m:
A regression test for the bug.
tests/valid/Mmakefile:
Enable the new test.
