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Instead of being relied on all over the place, centralize the compiler's

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Instead of being relied on all over the place, centralize the compiler's
knowledge of the names of unify, compare and index predicates in one place,
special_pred.m. This should make it easy to change the naming scheme once
we switch over to compiler-generated type_ctor_infos for builtin types,
which will eliminate the runtime system's knowledge of the naming scheme.

compiler/hlds_pred.m:
	Add a field to pred_infos that says whether the predicate is a unify,
	compare or index predicate, and if so, for which type constructor.
	Code that used to test the predicate's name for __Unify__ etc now
	tests this field instead. Similarly the code that used to employ
	devious tricks to find out the type the unify/compare/index predicate
	is for.

compiler/rtti.m:
	Include this field in rtti_proc_labels as well as pred_infos.

compiler/make_hlds.m:
	Fill in this field as appropriate.

compiler/proc_label.m:
	Replace the predicate name with special_pred_id in the proc_labels
	of unify, index and compare preds.

compiler/special_pred.m:
	Narrow the interface to prevent reliance on the naming scheme
	for compiler-generated unify, compare and index predicates,
	except when absolutely necessary, i.e. when creating names for
	them.

	Narrow the mechanism required to reverse-engineer the type constructor
	a unify/compare/index predicate is for from the types to the
	functionality required by higher_order.m.

compiler/code_gen.m:
compiler/det_report.m:
compiler/higher_order.m:
compiler/intermod.m:
compiler/layout_out.m:
compiler/magic_util.m:
compiler/ml_code_util.m:
compiler/name_mangle.m:
compiler/opt_debug.m:
compiler/opt_util.m:
compiler/optimize.m:
compiler/polymorphism.m:
compiler/post_typecheck.m:
compiler/proc_label.m:
compiler/rl_exprn.m:
compiler/rl_key.m:
compiler/simplify.m:
compiler/termination.m:
compiler/typecheck.m:
compiler/unify_proc.m:
compiler/unused_args.m:
	Update code and comments to conform to the changes above.

compiler/hlds_out.m:
	Don't refer to the 'type' that a unify, compare or index predicate
	is for; refer to the type *constructor*.

compiler/mlds_to_java.m:
	Delete an unused predicate.

tests/invalid/purity/purity.err_exp:
	Update this expected output for the change in hlds_out.m.
This commit is contained in:
Zoltan Somogyi
2003-05-27 05:57:30 +00:00
parent cf10411bfc
commit 599ef915d9
28 changed files with 261 additions and 240 deletions
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16
compiler/mlds_to_java.m
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@@ -125,22 +125,6 @@ qualified_name_is_stdlib(qualified(Module, Name)) :-
qualified_name_is_stdlib(Module)
).
% Succeeds iff this definition is a function definition which
% defines the `unify' or `compare' special predicate.
%
:- pred defn_is_unify_or_compare(mlds__defn).
:- mode defn_is_unify_or_compare(in) is semidet.
defn_is_unify_or_compare(Defn) :-
Defn = mlds__defn(Name, _Context, _Flags, _Body),
Name = function(Label, _ProcID, _MaybeSeqNum, _PredID),
Label = special_pred(PredName, _, _, _),
(
PredName = "__Compare__"
;
PredName = "__Unify__"
).
% Succeeds iff this definition is a data definition which
% defines RTTI.
%