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b4c3bb1387
Estimated hours taken: 3 Branches: main Clean up in unused module imports in the Mercury system detected by --warn-unused-imports. analysis/*.m: browser/*.m: deep_profiler/*.m: compiler/*.m: library/*.m: mdbcomp/*.m: profiler/*.m: slice/*.m: Remove unused module imports. Fix some minor departures from our coding standards. analysis/Mercury.options: browser/Mercury.options: deep_profiler/Mercury.options: compiler/Mercury.options: library/Mercury.options: mdbcomp/Mercury.options: profiler/Mercury.options: slice/Mercury.options: Set --no-warn-unused-imports for those modules that are used as packages or otherwise break --warn-unused-imports, e.g. because they contain predicates with both foreign and Mercury clauses and some of the imports only depend on the latter.
266 lines
10 KiB
Mathematica
266 lines
10 KiB
Mathematica
%-----------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%-----------------------------------------------------------------------------%
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% Copyright (C) 1993-2006 The 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: add_mode.m.
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%
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% This submodule of make_hlds handles the declarations of new insts and modes.
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%
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%-----------------------------------------------------------------------------%
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:- module hlds.make_hlds.add_mode.
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:- interface.
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:- import_module hlds.hlds_module.
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:- import_module hlds.make_hlds.make_hlds_passes.
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:- import_module mdbcomp.prim_data.
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:- import_module parse_tree.error_util.
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:- import_module parse_tree.prog_data.
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:- import_module bool.
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:- import_module list.
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:- pred module_add_inst_defn(inst_varset::in, sym_name::in, list(inst_var)::in,
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inst_defn::in, condition::in, prog_context::in, item_status::in,
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module_info::in, module_info::out, bool::out,
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list(error_spec)::in, list(error_spec)::out) is det.
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:- pred module_add_mode_defn(inst_varset::in, sym_name::in, list(inst_var)::in,
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mode_defn::in, condition::in, prog_context::in, item_status::in,
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module_info::in, module_info::out, bool::out,
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list(error_spec)::in, list(error_spec)::out) is det.
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%----------------------------------------------------------------------------%
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%----------------------------------------------------------------------------%
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:- implementation.
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:- import_module hlds.hlds_data.
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:- import_module hlds.hlds_pred.
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:- import_module hlds.make_hlds.make_hlds_error.
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:- import_module libs.compiler_util.
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:- import_module parse_tree.prog_mode.
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:- import_module map.
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%----------------------------------------------------------------------------%
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module_add_inst_defn(VarSet, Name, Args, InstDefn, Cond, Context,
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item_status(Status, _NeedQual), !ModuleInfo, InvalidMode, !Specs) :-
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% Add the definition of this inst to the HLDS inst table.
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module_info_get_inst_table(!.ModuleInfo, InstTable0),
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inst_table_get_user_insts(InstTable0, Insts0),
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insts_add(VarSet, Name, Args, InstDefn, Cond, Context, Status,
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Insts0, Insts, !Specs),
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inst_table_set_user_insts(Insts, InstTable0, InstTable),
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module_info_set_inst_table(InstTable, !ModuleInfo),
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% Check if the inst is infinitely recursive (at the top level).
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Arity = list.length(Args),
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InstId = inst_id(Name, Arity),
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TestArgs = list.duplicate(Arity, not_reached),
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check_for_cyclic_inst(Insts, InstId, InstId, TestArgs, [], Context,
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InvalidMode, !Specs).
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:- pred insts_add(inst_varset::in, sym_name::in,
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list(inst_var)::in, inst_defn::in, condition::in, prog_context::in,
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import_status::in, user_inst_table::in, user_inst_table::out,
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list(error_spec)::in, list(error_spec)::out) is det.
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insts_add(_, _, _, abstract_inst, _, _, _, !Insts, !Specs) :-
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% XXX handle abstract insts
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sorry(this_file, "abstract insts not implemented").
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insts_add(VarSet, Name, Args, eqv_inst(Body), _Cond, Context, Status, !Insts,
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!Specs) :-
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list.length(Args, Arity),
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InstId = inst_id(Name, Arity),
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(
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I = hlds_inst_defn(VarSet, Args, eqv_inst(Body), Context, Status),
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user_inst_table_insert(InstId, I, !Insts)
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->
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true
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;
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% If abstract insts are implemented, this will need to change
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% to update the hlds_inst_defn to the non-abstract inst.
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% XXX we should record each error using
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% module_info_incr_errors
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user_inst_table_get_inst_defns(!.Insts, InstDefns),
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map.lookup(InstDefns, InstId, OrigI),
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OrigI = hlds_inst_defn(_, _, _, OrigContext, _),
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multiple_def_error(Status, Name, Arity, "inst", Context, OrigContext,
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[], !Specs)
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).
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% Check if the inst is infinitely recursive (at the top level).
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%
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:- pred check_for_cyclic_inst(user_inst_table::in, inst_id::in, inst_id::in,
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list(mer_inst)::in, list(inst_id)::in, prog_context::in, bool::out,
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list(error_spec)::in, list(error_spec)::out) is det.
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check_for_cyclic_inst(UserInstTable, OrigInstId, InstId0, Args0, Expansions0,
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Context, InvalidMode, !Specs) :-
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( list.member(InstId0, Expansions0) ->
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report_circular_inst_equiv_error(OrigInstId, InstId0, Expansions0,
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Context, !Specs),
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InvalidMode = yes
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;
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user_inst_table_get_inst_defns(UserInstTable, InstDefns),
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(
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map.search(InstDefns, InstId0, InstDefn),
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InstDefn = hlds_inst_defn(_, Params, Body, _, _),
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Body = eqv_inst(EqvInst0),
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inst_substitute_arg_list(Params, Args0, EqvInst0, EqvInst),
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EqvInst = defined_inst(user_inst(Name, Args))
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->
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Arity = list.length(Args),
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InstId = inst_id(Name, Arity),
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Expansions = [InstId0 | Expansions0],
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check_for_cyclic_inst(UserInstTable, OrigInstId, InstId, Args,
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Expansions, Context, InvalidMode, !Specs)
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;
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InvalidMode = no
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)
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).
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%-----------------------------------------------------------------------------%
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module_add_mode_defn(VarSet, Name, Params, ModeDefn, Cond, Context,
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item_status(Status, _NeedQual), !ModuleInfo, InvalidMode, !Specs) :-
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module_info_get_mode_table(!.ModuleInfo, Modes0),
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modes_add(VarSet, Name, Params, ModeDefn, Cond, Context, Status,
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Modes0, Modes, InvalidMode, !Specs),
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module_info_set_mode_table(Modes, !ModuleInfo).
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:- pred modes_add(inst_varset::in, sym_name::in, list(inst_var)::in,
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mode_defn::in, condition::in, prog_context::in, import_status::in,
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mode_table::in, mode_table::out, bool::out,
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list(error_spec)::in, list(error_spec)::out) is det.
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modes_add(VarSet, Name, Args, eqv_mode(Body), _Cond, Context, Status,
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!Modes, InvalidMode, !Specs) :-
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list.length(Args, Arity),
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ModeId = mode_id(Name, Arity),
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(
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I = hlds_mode_defn(VarSet, Args, eqv_mode(Body), Context, Status),
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mode_table_insert(ModeId, I, !Modes)
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->
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true
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;
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mode_table_get_mode_defns(!.Modes, ModeDefns),
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map.lookup(ModeDefns, ModeId, OrigI),
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OrigI = hlds_mode_defn(_, _, _, OrigContext, _),
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% XXX We should record each error using module_info_incr_errors.
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multiple_def_error(Status, Name, Arity, "mode", Context, OrigContext,
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[], !Specs)
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),
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check_for_cyclic_mode(!.Modes, ModeId, ModeId, [], Context, InvalidMode,
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!Specs).
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% Check if the mode is infinitely recursive at the top level.
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%
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:- pred check_for_cyclic_mode(mode_table::in, mode_id::in, mode_id::in,
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list(mode_id)::in, prog_context::in, bool::out,
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list(error_spec)::in, list(error_spec)::out) is det.
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check_for_cyclic_mode(ModeTable, OrigModeId, ModeId0, Expansions0, Context,
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InvalidMode, !Specs) :-
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( list.member(ModeId0, Expansions0) ->
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report_circular_mode_equiv_error(OrigModeId, ModeId0, Expansions0,
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Context, !Specs),
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InvalidMode = yes
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;
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mode_table_get_mode_defns(ModeTable, ModeDefns),
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(
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map.search(ModeDefns, ModeId0, ModeDefn),
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ModeDefn = hlds_mode_defn(_, _, Body, _, _),
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Body = eqv_mode(EqvMode),
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EqvMode = user_defined_mode(Name, Args)
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->
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Arity = list.length(Args),
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ModeId = mode_id(Name, Arity),
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Expansions = [ModeId0 | Expansions0],
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check_for_cyclic_mode(ModeTable, OrigModeId, ModeId, Expansions,
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Context, InvalidMode, !Specs)
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;
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InvalidMode = no
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)
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).
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:- pred report_circular_inst_equiv_error(inst_id::in, inst_id::in,
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list(inst_id)::in, prog_context::in,
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list(error_spec)::in, list(error_spec)::out) is det.
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report_circular_inst_equiv_error(OrigInstId, InstId, Expansions, Context,
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!Specs) :-
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report_circular_equiv_error("inst", "insts",
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inst_id_to_circ_id(OrigInstId), inst_id_to_circ_id(InstId),
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list.map(inst_id_to_circ_id, Expansions),
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Context, !Specs).
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:- pred report_circular_mode_equiv_error(mode_id::in, mode_id::in,
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list(mode_id)::in, prog_context::in,
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list(error_spec)::in, list(error_spec)::out) is det.
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report_circular_mode_equiv_error(OrigModeId, ModeId, Expansions, Context,
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!Specs) :-
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report_circular_equiv_error("mode", "modes",
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mode_id_to_circ_id(OrigModeId), mode_id_to_circ_id(ModeId),
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list.map(mode_id_to_circ_id, Expansions),
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Context, !Specs).
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:- type circ_id
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---> circ_id(sym_name, arity).
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:- func inst_id_to_circ_id(inst_id) = circ_id.
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:- func mode_id_to_circ_id(mode_id) = circ_id.
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inst_id_to_circ_id(inst_id(SymName, Arity)) = circ_id(SymName, Arity).
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mode_id_to_circ_id(mode_id(SymName, Arity)) = circ_id(SymName, Arity).
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:- pred report_circular_equiv_error(string::in, string::in,
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circ_id::in, circ_id::in, list(circ_id)::in, prog_context::in,
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list(error_spec)::in, list(error_spec)::out) is det.
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report_circular_equiv_error(One, Several, OrigId, Id, Expansions, Context,
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!Specs) :-
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( Id = OrigId ->
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% Report an error message of the form
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% Error: circular equivalence <kind> foo/0.
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% or
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% Error: circular equivalence <kind>s foo/0 and bar/1.
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% or
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% Error: circular equivalence <kind>s foo/0, bar/1,
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% and baz/2.
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% where <kind> is either "inst" or "mode".
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Kinds = choose_number(Expansions, One, Several),
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ExpansionPieces = list.map(
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(func(circ_id(SymName, Arity)) =
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sym_name_and_arity(SymName / Arity)),
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Expansions),
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Pieces = [words("Error: circular equivalence"), fixed(Kinds)]
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++ component_list_to_pieces(ExpansionPieces) ++ [suffix(".")],
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Msg = simple_msg(Context, [always(Pieces)]),
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Spec = error_spec(severity_error, phase_parse_tree_to_hlds, [Msg]),
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!:Specs = [Spec | !.Specs]
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;
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% We have an inst `OrigId' which is not itself circular,
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% but which is defined in terms of `Id' which is circular.
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% Don't bother reporting it now -- it have already been
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% reported when we processed the definition of Id.
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true
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).
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%----------------------------------------------------------------------------%
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:- func this_file = string.
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this_file = "add_mode.m".
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%----------------------------------------------------------------------------%
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