Makefile.common:
Various minor bugfixes.
Makefile.mercury:
Add rules for creating assembler (.s) files.
term.nl, *.nl:
Replace term__context_init/1 with term__context_init/0.
The first argument was always zero anyway.
io.nl:
Change the interface to io__read_char and io__read_line so that
they return a better error indicator.
Add a new predicate io__putback_char.
polymorphism.nl:
Don't abort if a predicate doesn't have any modes.
options.nl:
Let's try turning polymorphism on again. It seems to work this time.
string.nl, string.nu.nl:
Add string__to_float.
Move implementation of string__to_int from string.nl to string.nu.nl.
code_util.nl:
Fix bug in make_proc_label: for unification predicates,
look at the _last_ argument to determine the type for
name mangling, not the first, since we introduce extra
higher-order arguments at the start.
make_hlds.nl, hlds.nl:
Ensure that the proc_info head_vars has the right length even for
imported predicates. This fixes a problem with --polymorphism.
make_hlds, unify_proc.nl, prog_util.nl:
Output unification procedures for equivalence types.
polymorphism.nl:
Ensure that this works even for unification procedures for
equivalence types, which are a bit wierd since they are not
quite type correct.
typecheck.nl:
Don't attempt to typecheck unification predicates, since
they are already type-correct when we construct them.
In particular don't typecheck unification procedures for
equivalence types, since it would report a spurious error.
mercury_to_mercury.nl:
Remove a superfluous duplicate clause.
Makefile.common:
Add some targets for compiling the compiler and the library.
type_util.nl, dense_switch.nl, switch_gen.nl, polymorphism.nl:
Rename inttype, chartype, etc. as int_type, char_type, etc.
Add polymorphic_type.
modes.nl, mode_errors.nl:
Report an error for direct attempts to unify higher-order pred types.
(Of course, we don't catch indirect attempts via polymorphic types -
that would require global analysis. For them, we report the error
at runtime.)
modes.nl:
Remove unreachable code from conjuctions.
(XXX also should do this for if-then-else.)
options.nl:
Turn -p off by default. I'll turn it on again when it works ;-)
polymorphism.nl, mercury_builtin.nl:
Generate sensible code in the case were we take the address
of the unification predicate for a builtin or enumeration type.
hlds.nl code_info.nl hlds.int hlds_out.nl polymorphism.nl:
Create a new cons_id `pred_const(pred_id, proc_id)',
to avoid ambiguities with the old use of
`cons_id(name, arity)'.
code_util.nl, polymorphism.nl, mercury_builtin.nl:
Change things so that only call/1 is builtin.
For call/N, we can implement them by hand in mercury_builtin.nl.
(Procedure call overhead is the least of our worries right now.)
Note that call/N still only works in the following mode.
:- call (in, in, ..., in) is semidet.
You can't use it to call det predicates.
polymorphism.nl:
Handle polymorphic unifications (finally!)
Give some of the introduced variables meaningful names.
Don't insert additional arguments for polymorphic builtins
(currently the only polymorphic builtin is call/N.)
polymorphism.nl, hlds.nl, typecheck.nl:
Store two typevarsets in the pred_info rather than just one.
The first one holds the typevarset for the arguments only,
the second also includes any local type variables occuring
in the bodies of any of the procedures for that predicate.
This solves a performance problem with polymorphism.nl.
polymorphism.nl:
Fix some bugs:
- I had forgotten to update the argmodes of the modified
procedures
- I was updating the argtypes and attempting to use there
old value. I fixed this by splitting the algorithm
into two passes.
- to compute the types of the arguments to a call,
apply the type mapping from the _caller_ not the callee.
Also improve efficiency in a couple of places.
hlds.nl:
Add some new access predicates required by polymorphism.nl.
list.nl:
Add a new predicate list__duplicate, which is used by polymorphism.nl.
typecheck.nl, type_util.nl:
Move the type_unify routines from typecheck.nl into type_util.nl,
since they're also needed by polymorphism.nl.
term.nl:
Export term__apply_rec_substitution_to_list, since it's needed
by polymorphism.nl.
- - - - - - - - - - - - - - - - - - - - - - - - -
mode_util.nl, type_util.nl:
Move some routines from mode_util.nl to type_util.nl, where they
really belong.
- - - - - - - - - - - - - - - - - - - - - - - - -
make_hlds.nl, code_util.nl, typecheck.nl:
Mark builtin predicates as "external" in make_hlds.nl,
rather than checking for them as a special case in typecheck.nl.
- - - - - - - - - - - - - - - - - - - - - - - - -
prog_io.nl, hlds.nl, typecheck.nl:
For documentation purposes, define equivalent types `tvar',
`tvarset', `tsubst' for type variables, type varsets, and
type substitutions.
- - - - - - - - - - - - - - - - - - - - - - - - -
mercury_compile.pp, options.nl:
Change the handling of the --dump-hlds option so that you can
now dump the HLDS after any of the 12 HLDS transformation passes.
- - - - - - - - - - - - - - - - - - - - - - - - -
make_hlds.nl:
Report an error if there are clauses for an imported predicate.
- - - - - - - - - - - - - - - - - - - - - - - - -
io.nu.nl:
Add a new predicate r/1 which is like run/1 except that
you pass it a string rather than a list of atoms.
So now you can do
$ mercury_compile.debug
Mercury Interpreter 0.1
NU-Prolog 1.6.4
1?- r("mc -options blah blah blah").
polymorphism.nl:
New module which does a syntactic tranformation of the HLDS
to implement polymorphic unifications by passing higher-order
unification predicates.
Still very unfinished (lots of syntax errors, etc. :-).
