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ba93a52fe7
Estimated hours taken: 10 Branches: main This diff changes a few types from being defined as equivalent to a pair to being discriminated union types with their own function symbol. This was motivated by an error message (one of many, but the one that broke the camel's back) about "-" being used in an ambiguous manner. It will reduce the number of such messages in the future, and will make compiler data structures easier to inspect in the debugger. The most important type changed by far is hlds_goal, whose function symbol is now "hlds_goal". Second and third in importance are llds.instruction (function symbol "llds_instr") and prog_item.m's item_and_context (function symbol "item_and_context"). There are some others as well. In several places, I rearranged predicates to factor the deconstruction of goals into hlds_goal_expr and hlds_goal_into out of each clause into a single point. In many places, I changed variable names that used "Goal" to refer to just hlds_goal_exprs to use "GoalExpr" instead. I also changed variable names that used "Item" to refer to item_and_contexts to use "ItemAndContext" instead. This should make reading such code less confusing. I renamed some function symbols and predicates to avoid ambiguities. I only made one algorithmic change (at least intentionally). In assertion.m, comparing two goals for equality now ignores goal_infos for all kinds of goals, whereas previously it ignored them for most kinds of goals, but for shorthand goals it was insisting on them being equal. This seemed to me to be a bug. Pete, can you confirm this?
237 lines
8.4 KiB
Mathematica
237 lines
8.4 KiB
Mathematica
%-----------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%-----------------------------------------------------------------------------%
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% Copyright (C) 1998-2007 University of Melbourne.
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% This file may only be copied under the terms of the GNU General
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% Public License - see the file COPYING in the Mercury distribution.
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%-----------------------------------------------------------------------------%
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%
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% File: pd_debug_m
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% Main author: stayl.
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%
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% Debugging routines for partial deduction.
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%
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%-----------------------------------------------------------------------------%
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:- module transform_hlds.pd_debug.
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:- interface.
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:- import_module hlds.hlds_goal.
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:- import_module hlds.hlds_pred.
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:- import_module parse_tree.prog_data.
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:- import_module transform_hlds.pd_info.
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:- import_module io.
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:- import_module list.
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:- import_module string.
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%-----------------------------------------------------------------------------%
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:- pred pd_debug_do_io(pred(io, io)::pred(di, uo) is det,
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io::di, io::uo) is det.
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:- pred pd_debug_output_goal(pd_info::in, string::in, hlds_goal::in,
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io::di, io::uo) is det.
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:- pred pd_debug_search_version_result(pd_info::in, maybe_version::in,
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io::di, io::uo) is det.
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:- pred pd_debug_register_version(pd_info::in, pred_proc_id::in,
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version_info::in, io::di, io::uo) is det.
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:- pred pd_debug_write_instmap(pd_info::in, io::di, io::uo) is det.
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:- pred pd_debug_message(string::in, list(string.poly_type)::in,
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io::di, io::uo) is det.
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:- pred pd_debug_message(prog_context::in, string::in,
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list(string.poly_type)::in, io::di, io::uo) is det.
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:- pred pd_debug_write(T::in, io::di, io::uo) is det.
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:- pred pd_debug_write_pred_proc_id_list(pd_info::in, list(pred_proc_id)::in,
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io::di, io::uo) is det.
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%-----------------------------------------------------------------------------%
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%-----------------------------------------------------------------------------%
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:- implementation.
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:- import_module hlds.goal_util.
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:- import_module hlds.hlds_module.
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:- import_module hlds.hlds_out.
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:- import_module hlds.instmap.
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:- import_module hlds.instmap.
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:- import_module libs.globals.
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:- import_module libs.options.
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:- import_module parse_tree.mercury_to_mercury.
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:- import_module parse_tree.prog_out.
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:- import_module bool.
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:- import_module pair.
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:- import_module set.
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%-----------------------------------------------------------------------------%
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pd_debug_do_io(Pred, !IO) :-
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globals.io_lookup_bool_option(debug_pd, DoDebug, !IO),
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(
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DoDebug = yes,
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call(Pred, !IO),
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io.flush_output(!IO)
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;
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DoDebug = no
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).
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%-----------------------------------------------------------------------------%
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pd_debug_search_version_result(PDInfo, MaybeVersion, !IO) :-
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pd_info_get_module_info(PDInfo, ModuleInfo),
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pd_debug_do_io(pd_debug_search_version_result_2(ModuleInfo, MaybeVersion),
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!IO).
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:- pred pd_debug_search_version_result_2(module_info::in, maybe_version::in,
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io::di, io::uo) is det.
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pd_debug_search_version_result_2(ModuleInfo, MaybeVersion, !IO) :-
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(
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MaybeVersion = no_version,
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io.write_string("Specialised version not found.\n", !IO)
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;
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MaybeVersion = version(exact, _, _, _, _),
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io.write_string("Exact match found.\n", !IO)
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;
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MaybeVersion = version(more_general, PredProcId, Version,
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_, _),
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io.write_string("More general version.\n", !IO),
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pd_debug_output_version(ModuleInfo, PredProcId, Version, no, !IO)
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).
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%-----------------------------------------------------------------------------%
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pd_debug_register_version(PDInfo, PredProcId, Version, !IO) :-
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pd_info_get_module_info(PDInfo, ModuleInfo),
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pd_debug_do_io(
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pd_debug_register_version_2(ModuleInfo, PredProcId, Version), !IO).
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:- pred pd_debug_register_version_2(module_info::in, pred_proc_id::in,
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version_info::in, io::di, io::uo) is det.
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pd_debug_register_version_2(ModuleInfo, PredProcId, Version, !IO) :-
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io.write_string("Registering version:\n", !IO),
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pd_debug_output_version(ModuleInfo, PredProcId, Version, no, !IO).
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%-----------------------------------------------------------------------------%
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:- pred pd_debug_output_version(module_info::in, pred_proc_id::in,
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version_info::in, bool::in, io::di, io::uo) is det.
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pd_debug_output_version(ModuleInfo, PredProcId, Version, WriteUnfoldedGoal,
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!IO) :-
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Version = version_info(hlds_goal(GoalExpr, GoalInfo), _, Args, _, InstMap,
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InitialCost, CostDelta, Parents, _),
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PredName = predicate_name(ModuleInfo, PredId),
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io.write_string(PredName, !IO),
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io.write_string(": (PredProcId :", !IO),
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PredProcId = proc(PredId, ProcId),
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pred_id_to_int(PredId, PredInt),
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proc_id_to_int(ProcId, ProcInt),
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io.write_int(PredInt, !IO),
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io.write_string("-", !IO),
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io.write_int(ProcInt, !IO),
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io.write_string(")", !IO),
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io.nl(!IO),
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io.write_string(" initial cost: ", !IO),
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io.write_int(InitialCost, !IO),
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io.nl(!IO),
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io.write_string(" cost delta: ", !IO),
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io.write_int(CostDelta, !IO),
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io.nl(!IO),
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goal_info_get_nonlocals(GoalInfo, NonLocals),
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module_info_pred_proc_info(ModuleInfo, PredId, ProcId, _, ProcInfo),
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proc_info_get_varset(ProcInfo, VarSet),
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instmap_restrict(NonLocals, InstMap, InstMap1),
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io.write_string(" args: ", !IO),
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mercury_output_vars(VarSet, yes, Args, !IO),
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io.nl(!IO),
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hlds_out.write_instmap(InstMap1, VarSet, yes, 1, !IO),
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io.nl(!IO),
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hlds_out.write_goal(hlds_goal(GoalExpr, GoalInfo), ModuleInfo, VarSet,
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yes, 1, "\n", !IO),
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io.nl(!IO),
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io.write_string("Parents: ", !IO),
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set.to_sorted_list(Parents, ParentsList),
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io.write_list(ParentsList, ", ", write_pred_proc_id(ModuleInfo), !IO),
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io.nl(!IO),
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(
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WriteUnfoldedGoal = yes,
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proc_info_get_goal(ProcInfo, ProcGoal),
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io.write_string("Unfolded goal\n", !IO),
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hlds_out.write_goal(ProcGoal, ModuleInfo, VarSet, yes, 1, "\n", !IO),
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io.nl(!IO)
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;
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WriteUnfoldedGoal = no
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).
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%-----------------------------------------------------------------------------%
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pd_debug_write_instmap(PDInfo, !IO) :-
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pd_info_get_instmap(PDInfo, InstMap),
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pd_info_get_proc_info(PDInfo, ProcInfo),
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proc_info_get_varset(ProcInfo, VarSet),
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pd_debug_do_io(hlds_out.write_instmap(InstMap, VarSet, yes, 1), !IO).
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%-----------------------------------------------------------------------------%
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pd_debug_write_pred_proc_id_list(PDInfo, PredProcIds, !IO) :-
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pd_info_get_module_info(PDInfo, ModuleInfo),
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pd_debug_do_io(
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pd_debug_write_pred_proc_id_list_2(ModuleInfo, PredProcIds),
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!IO).
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:- pred pd_debug_write_pred_proc_id_list_2(module_info::in,
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list(pred_proc_id)::in, io::di, io::uo) is det.
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pd_debug_write_pred_proc_id_list_2(ModuleInfo, PredProcIds, !IO) :-
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io.write_list(PredProcIds, ", ", write_pred_proc_id(ModuleInfo), !IO).
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%-----------------------------------------------------------------------------%
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pd_debug_output_goal(PDInfo, Msg, Goal, !IO) :-
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pd_debug_do_io(pd_debug_output_goal_2(PDInfo, Msg, Goal), !IO).
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:- pred pd_debug_output_goal_2(pd_info::in, string::in, hlds_goal::in,
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io::di, io::uo) is det.
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pd_debug_output_goal_2(PDInfo, Msg, hlds_goal(GoalExpr, GoalInfo), !IO) :-
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pd_info_get_proc_info(PDInfo, ProcInfo),
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proc_info_get_varset(ProcInfo, VarSet),
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pd_info_get_instmap(PDInfo, InstMap),
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pd_info_get_module_info(PDInfo, ModuleInfo),
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io.write_string(Msg, !IO),
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goal_util.goal_vars(hlds_goal(GoalExpr, GoalInfo), Vars),
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instmap_restrict(Vars, InstMap, InstMap1),
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hlds_out.write_instmap(InstMap1, VarSet, yes, 1, !IO),
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io.nl(!IO),
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hlds_out.write_goal(hlds_goal(GoalExpr, GoalInfo), ModuleInfo, VarSet,
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yes, 1, "\n", !IO),
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io.nl(!IO),
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io.flush_output(!IO).
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%-----------------------------------------------------------------------------%
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pd_debug_message(Fmt, Args, !IO) :-
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pd_debug_do_io(io.format(Fmt, Args), !IO).
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pd_debug_message(Context, Fmt, Args, !IO) :-
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pd_debug_do_io(prog_out.write_context(Context), !IO),
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pd_debug_do_io(io.format(Fmt, Args), !IO).
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%-----------------------------------------------------------------------------%
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pd_debug_write(Thing, !IO) :-
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pd_debug_do_io(io.write(Thing), !IO).
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%-----------------------------------------------------------------------------%
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%-----------------------------------------------------------------------------%
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