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973 lines
42 KiB
Mathematica
973 lines
42 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 expandtab
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%---------------------------------------------------------------------------%
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% Copyright (C) 1996-2011 The University of Melbourne.
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% Copyright (C) 2020-2024 The Mercury team.
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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: parse_pragma_analysis.m.
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%
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% This parses pragmas that record the results of some program analysis,
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% though some of them may also be written by hand.
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%
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%---------------------------------------------------------------------------%
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:- module parse_tree.parse_pragma_analysis.
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:- interface.
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:- import_module mdbcomp.
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:- import_module mdbcomp.sym_name.
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:- import_module parse_tree.maybe_error.
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:- import_module parse_tree.parse_types.
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:- import_module parse_tree.prog_data.
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:- import_module list.
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:- import_module term.
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:- import_module varset.
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%---------------------------------------------------------------------------%
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:- pred parse_pragma_unused_args(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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:- pred parse_pragma_termination_info(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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:- pred parse_pragma_termination2_info(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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:- pred parse_pragma_structure_sharing(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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:- pred parse_pragma_structure_reuse(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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:- pred parse_pragma_exceptions(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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:- pred parse_pragma_trailing_info(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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:- pred parse_pragma_mm_tabling_info(module_name::in, varset::in, term::in,
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list(term)::in, prog_context::in, item_seq_num::in,
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maybe1(item_or_marker)::out) is det.
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%---------------------------------------------------------------------------%
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%---------------------------------------------------------------------------%
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:- implementation.
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:- import_module libs.
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:- import_module libs.rat.
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:- import_module mdbcomp.prim_data.
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:- import_module parse_tree.error_spec.
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:- import_module parse_tree.parse_sym_name.
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:- import_module parse_tree.parse_tree_out_term.
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:- import_module parse_tree.parse_type_name.
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:- import_module parse_tree.parse_util.
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:- import_module parse_tree.prog_ctgc.
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:- import_module parse_tree.prog_data_pragma.
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:- import_module parse_tree.prog_item.
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:- import_module bool.
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:- import_module cord.
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:- import_module maybe.
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:- import_module term_int.
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:- import_module term_vars.
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:- import_module unit.
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%---------------------------------------------------------------------------%
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parse_pragma_unused_args(ModuleName, VarSet, ErrorTerm, PragmaTerms,
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Context, SeqNum, MaybeIOM) :-
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% pragma unused_args should never appear in user programs,
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% only in .opt files.
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(
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PragmaTerms = [PredOrFuncTerm, PredNameTerm, ArityTerm, ModeNumTerm,
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UnusedArgsTerm],
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PredNameContextPieces = cord.from_list(
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[words("In the second argument of"),
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pragma_decl("unused_args"), words("declaration:"), nl]),
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parse_predicate_or_function(VarSet, PredOrFuncTerm, MaybePredOrFunc),
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parse_implicitly_qualified_sym_name_and_no_args(ModuleName,
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VarSet, PredNameContextPieces, PredNameTerm, MaybePredName),
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ArityContextPieces = cord.from_list(
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[words("In the third argument of"),
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pragma_decl("unused_args"), words("declaration:"), nl]),
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parse_decimal_int(ArityContextPieces, VarSet, ArityTerm, MaybeArity),
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ModeNumContextPieces = cord.from_list(
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[words("In the fourth argument of"),
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pragma_decl("unused_args"), words("declaration:"), nl]),
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parse_decimal_int(ModeNumContextPieces, VarSet, ModeNumTerm,
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MaybeModeNum),
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UnusedArgsContextPieces = cord.from_list(
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[words("In the fifth argument of"),
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pragma_decl("unused_args"), words("declaration:"), nl]),
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parse_list_elements(cord.init, "list of integers",
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parse_decimal_int(UnusedArgsContextPieces),
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VarSet, UnusedArgsTerm, MaybeUnusedArgs),
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( if
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MaybePredOrFunc = ok1(PredOrFunc),
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MaybePredName = ok1(PredName),
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MaybeArity = ok1(Arity),
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MaybeModeNum = ok1(ModeNum),
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MaybeUnusedArgs = ok1(UnusedArgs)
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then
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PredNameArityPFMn = proc_pf_name_arity_mn(PredOrFunc,
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PredName, user_arity(Arity), ModeNum),
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Pragma = gen_pragma_unused_args_info(PredNameArityPFMn,
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UnusedArgs, Context, SeqNum),
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Item = item_generated_pragma( gen_pragma_unused_args(Pragma)),
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MaybeIOM = ok1(iom_item(Item))
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else
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Specs =
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get_any_errors1(MaybePredOrFunc) ++
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get_any_errors1(MaybePredName) ++
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get_any_errors1(MaybeArity) ++
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get_any_errors1(MaybeModeNum) ++
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get_any_errors1(MaybeUnusedArgs),
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MaybeIOM = error1(Specs)
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)
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;
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( PragmaTerms = []
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; PragmaTerms = [_]
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; PragmaTerms = [_, _]
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; PragmaTerms = [_, _, _]
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; PragmaTerms = [_, _, _, _]
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; PragmaTerms = [_, _, _, _, _, _ | _]
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),
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Pieces = [words("Error: an"), pragma_decl("unused_args"),
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words("declaration must have five arguments."), nl],
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Spec = spec($pred, severity_error, phase_t2pt,
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get_term_context(ErrorTerm), Pieces),
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MaybeIOM = error1([Spec])
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).
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%---------------------------------------------------------------------------%
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parse_pragma_termination_info(ModuleName, VarSet, ErrorTerm, PragmaTerms,
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Context, SeqNum, MaybeIOM) :-
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(
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PragmaTerms = [PredAndModesTerm0, ArgSizeTerm, TerminationTerm],
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PAMContextPieces = cord.from_list([words("In the first argument of"),
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pragma_decl("termination_info"), words("declaration:"), nl]),
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parse_pred_or_func_and_arg_modes(yes(ModuleName), PAMContextPieces,
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VarSet, PredAndModesTerm0, MaybeNameAndModes),
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( if
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ArgSizeTerm = term.functor(term.atom(ArgSizeFunctor),
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ArgSizeArgTerms, _),
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( ArgSizeFunctor = "not_set"
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; ArgSizeFunctor = "infinite"
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; ArgSizeFunctor = "finite"
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)
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then
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ArgSizeContextPieces = cord.from_list(
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[words("In the second argument of"),
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pragma_decl("termination_info"), words("declaration:"), nl]),
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(
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ArgSizeFunctor = "not_set",
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(
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ArgSizeArgTerms = [],
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MaybeArgSizeInfo0 = no,
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MaybeMaybeArgSizeInfo = ok1(MaybeArgSizeInfo0)
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;
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ArgSizeArgTerms = [_ | _],
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NotSetPieces = cord.list(ArgSizeContextPieces) ++
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[words("error:"), quote("not_set"),
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words("must have no arguments."), nl],
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NotSetSpec = spec($pred, severity_error, phase_t2pt,
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get_term_context(ArgSizeTerm), NotSetPieces),
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MaybeMaybeArgSizeInfo = error1([NotSetSpec])
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)
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;
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ArgSizeFunctor = "infinite",
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(
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ArgSizeArgTerms = [],
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MaybeArgSizeInfo0 = yes(infinite(unit)),
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MaybeMaybeArgSizeInfo = ok1(MaybeArgSizeInfo0)
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;
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ArgSizeArgTerms = [_ | _],
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InfinitePieces = cord.list(ArgSizeContextPieces) ++
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[words("error:"), quote("infinite"),
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words("must have no arguments."), nl],
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InfiniteSpec = spec($pred, severity_error, phase_t2pt,
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get_term_context(ArgSizeTerm), InfinitePieces),
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MaybeMaybeArgSizeInfo = error1([InfiniteSpec])
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)
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;
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ArgSizeFunctor = "finite",
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(
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ArgSizeArgTerms = [IntTerm, UsedArgsTerm],
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IntContextPieces = ArgSizeContextPieces ++
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cord.from_list([words("in the first argument:"), nl]),
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parse_decimal_int(IntContextPieces, VarSet, IntTerm,
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MaybeInt),
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BoolContextPieces = ArgSizeContextPieces ++
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cord.from_list([words("in the second argument:"), nl]),
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parse_list_elements(cord.init, "list of booleans",
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parse_bool(BoolContextPieces),
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VarSet, UsedArgsTerm, MaybeUsedArgs),
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( if
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MaybeInt = ok1(Int),
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MaybeUsedArgs = ok1(UsedArgs)
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then
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MaybeArgSizeInfo0 = yes(finite(Int, UsedArgs)),
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MaybeMaybeArgSizeInfo = ok1(MaybeArgSizeInfo0)
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else
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FiniteSpecs = get_any_errors1(MaybeInt) ++
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get_any_errors1(MaybeUsedArgs),
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MaybeMaybeArgSizeInfo = error1(FiniteSpecs)
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)
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;
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( ArgSizeArgTerms = []
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; ArgSizeArgTerms = [_]
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; ArgSizeArgTerms = [_, _, _ | _]
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),
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FinitePieces =
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[words("Error: in the second argument of"),
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pragma_decl("termination_info"),
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words("declaration:"), nl,
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quote("finite"),
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words("must have two arguments."), nl],
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FiniteSpec = spec($pred, severity_error, phase_t2pt,
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get_term_context(ArgSizeTerm), FinitePieces),
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MaybeMaybeArgSizeInfo = error1([FiniteSpec])
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)
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)
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else
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ArgSizeTermStr = describe_error_term(VarSet, ArgSizeTerm),
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ArgSizePieces = [words("In the second argument of"),
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pragma_decl("termination_info"), words("declaration:"), nl,
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words("error: expected one of"),
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quote("not_set"), suffix(","),
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quote("infinite"), suffix(","), words("and"),
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quote("finite(N, <used_args>)"), suffix(","),
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words("got"), quote(ArgSizeTermStr), suffix("."), nl],
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ArgSizeSpec = spec($pred, severity_error, phase_t2pt,
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get_term_context(ArgSizeTerm), ArgSizePieces),
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MaybeMaybeArgSizeInfo = error1([ArgSizeSpec])
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),
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TIContextPieces = [words("In the third argument of"),
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pragma_decl("termination_info"), words("declaration:"), nl],
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parse_termination_info(TIContextPieces, VarSet, TerminationTerm,
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MaybeMaybeTerminationInfo),
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( if
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MaybeNameAndModes = ok3(PredName, PredOrFunc, Modes),
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MaybeMaybeArgSizeInfo = ok1(MaybeArgSizeInfo),
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MaybeMaybeTerminationInfo = ok1(MaybeTerminationInfo)
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then
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PredNameModesPF = proc_pf_name_modes(PredOrFunc, PredName, Modes),
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Term = decl_pragma_termination_info(PredNameModesPF,
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MaybeArgSizeInfo, MaybeTerminationInfo, Context, SeqNum),
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Item = item_decl_pragma(decl_pragma_termination(Term)),
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MaybeIOM = ok1(iom_item(Item))
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else
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Specs = get_any_errors3(MaybeNameAndModes) ++
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get_any_errors1(MaybeMaybeArgSizeInfo) ++
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get_any_errors1(MaybeMaybeTerminationInfo),
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MaybeIOM = error1(Specs)
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)
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;
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( PragmaTerms = []
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; PragmaTerms = [_]
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; PragmaTerms = [_, _]
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; PragmaTerms = [_, _, _, _ | _]
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),
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Pieces = [words("Error: a"), pragma_decl("termination_info"),
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words("declaration must have three arguments."), nl],
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Spec = spec($pred, severity_error, phase_t2pt,
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get_term_context(ErrorTerm), Pieces),
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MaybeIOM = error1([Spec])
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).
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:- pred parse_bool(cord(format_piece)::in, varset::in, term::in,
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maybe1(bool)::out) is det.
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parse_bool(ContextPieces, VarSet, Term, MaybeBool) :-
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( if
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Term = term.functor(term.atom(Name), [], _),
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( Name = "yes", Bool = yes
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; Name = "no", Bool = no
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)
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then
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MaybeBool = ok1(Bool)
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else
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TermStr = describe_error_term(VarSet, Term),
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Pieces = cord.list(ContextPieces) ++ [lower_case_next_if_not_first,
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words("Error: expected a boolean (yes or no),"),
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words("got"), quote(TermStr), suffix("."), nl],
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Spec = spec($pred, severity_error, phase_t2pt,
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get_term_context(Term), Pieces),
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MaybeBool = error1([Spec])
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).
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%---------------------------------------------------------------------------%
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parse_pragma_termination2_info(ModuleName, VarSet, ErrorTerm, PragmaTerms,
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Context, SeqNum, MaybeIOM) :-
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(
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PragmaTerms = [PredAndModesTerm0, SuccessArgSizeTerm,
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FailureArgSizeTerm, TerminationTerm],
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PAMContextPieces = cord.from_list([words("In the first argument of"),
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pragma_decl("termination2_info"), words("declaration:"), nl]),
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parse_pred_or_func_and_arg_modes(yes(ModuleName), PAMContextPieces,
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VarSet, PredAndModesTerm0, MaybeNameAndModes),
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parse_arg_size_constraints(VarSet, SuccessArgSizeTerm,
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MaybeSuccessArgSize),
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parse_arg_size_constraints(VarSet, FailureArgSizeTerm,
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MaybeFailureArgSize),
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TIContextPieces = [words("In the fourth argument of"),
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pragma_decl("termination2_info"), words("declaration:"), nl],
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parse_termination_info(TIContextPieces, VarSet, TerminationTerm,
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MaybeMaybeTerminationInfo),
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( if
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MaybeNameAndModes = ok3(PredName, PredOrFunc, Modes),
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MaybeSuccessArgSize = ok1(SuccessArgSizeInfo),
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MaybeFailureArgSize = ok1(FailureArgSizeInfo),
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MaybeMaybeTerminationInfo = ok1(MaybeTerminationInfo)
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then
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PredNameModesPF = proc_pf_name_modes(PredOrFunc, PredName, Modes),
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Term2 = decl_pragma_termination2_info(PredNameModesPF,
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SuccessArgSizeInfo, FailureArgSizeInfo, MaybeTerminationInfo,
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Context, SeqNum),
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Item = item_decl_pragma(decl_pragma_termination2(Term2)),
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MaybeIOM = ok1(iom_item(Item))
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else
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Specs = get_any_errors3(MaybeNameAndModes) ++
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get_any_errors1(MaybeSuccessArgSize) ++
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get_any_errors1(MaybeFailureArgSize) ++
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get_any_errors1(MaybeMaybeTerminationInfo),
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MaybeIOM = error1(Specs)
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)
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;
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( PragmaTerms = []
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; PragmaTerms = [_]
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; PragmaTerms = [_, _]
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; PragmaTerms = [_, _, _]
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; PragmaTerms = [_, _, _, _, _ | _]
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),
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Pieces = [words("Error: a"), pragma_decl("termination2_info"),
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words("declaration must have four arguments."), nl],
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Spec = spec($pred, severity_error, phase_t2pt,
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get_term_context(ErrorTerm), Pieces),
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MaybeIOM = error1([Spec])
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).
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:- pred parse_termination_info(list(format_piece)::in, varset::in,
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term::in, maybe1(maybe(pragma_termination_info))::out) is det.
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parse_termination_info(ContextPieces, VarSet, Term,
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MaybeMaybeTerminationInfo) :-
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( if
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Term = term.functor(term.atom(Functor), [], _),
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(
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Functor = "not_set",
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MaybeTerminationInfo = no
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;
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Functor = "can_loop",
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MaybeTerminationInfo = yes(can_loop(unit))
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;
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Functor = "cannot_loop",
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MaybeTerminationInfo = yes(cannot_loop(unit))
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)
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then
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MaybeMaybeTerminationInfo = ok1(MaybeTerminationInfo)
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else
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TermStr = describe_error_term(VarSet, Term),
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Pieces = ContextPieces ++
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[lower_case_next_if_not_first, words("Error: expected one of"),
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quote("not_set"), suffix(","),
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quote("can_loop"), suffix(","), words("and"),
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quote("cannot_loop"), suffix(","),
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words("got"), quote(TermStr), suffix("."), nl],
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Spec = spec($pred, severity_error, phase_t2pt,
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get_term_context(Term), Pieces),
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MaybeMaybeTerminationInfo = error1([Spec])
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).
|
|
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:- pred parse_arg_size_constraints(varset::in, term::in,
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maybe1(maybe(list(arg_size_constr)))::out) is det.
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|
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parse_arg_size_constraints(VarSet, Term, MaybeMaybeArgSizeConstraints) :-
|
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( if
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Term = term.functor(term.atom("not_set"), [], _)
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then
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MaybeMaybeArgSizeConstraints = ok1(no)
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else if
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Term = term.functor(term.atom("constraints"), [ConstraintsTerm], _)
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then
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parse_list_elements(cord.init, "list of argument size constraints",
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parse_arg_size_constraint, VarSet, ConstraintsTerm,
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MaybeConstraints),
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(
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MaybeConstraints = ok1(Constraints),
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MaybeMaybeArgSizeConstraints = ok1(yes(Constraints))
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;
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MaybeConstraints = error1(Specs),
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MaybeMaybeArgSizeConstraints = error1(Specs)
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)
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else
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TermStr = describe_error_term(VarSet, Term),
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Pieces = [words("Error: expected a description of"),
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words("argument size constraints,"),
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words("got"), quote(TermStr), suffix("."), nl],
|
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Spec = spec($pred, severity_error, phase_t2pt,
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get_term_context(Term), Pieces),
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MaybeMaybeArgSizeConstraints = error1([Spec])
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).
|
|
|
|
:- pred parse_arg_size_constraint(varset::in, term::in,
|
|
maybe1(arg_size_constr)::out) is det.
|
|
|
|
parse_arg_size_constraint(VarSet, Term, MaybeConstr) :-
|
|
( if
|
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Term = term.functor(term.atom(Functor), [Terms, ConstantTerm], _),
|
|
( Functor = "le"
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; Functor = "eq"
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)
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|
then
|
|
parse_list_elements(cord.init, "list of linear terms", parse_lp_term,
|
|
VarSet, Terms, LPTermsResult),
|
|
parse_rational(VarSet, ConstantTerm, ConstantResult),
|
|
( if
|
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LPTermsResult = ok1(LPTerms),
|
|
ConstantResult = ok1(Constant)
|
|
then
|
|
(
|
|
Functor = "le",
|
|
Constr = le(LPTerms, Constant)
|
|
;
|
|
Functor = "eq",
|
|
Constr = eq(LPTerms, Constant)
|
|
),
|
|
MaybeConstr = ok1(Constr)
|
|
else
|
|
Specs = get_any_errors1(LPTermsResult) ++
|
|
get_any_errors1(ConstantResult),
|
|
MaybeConstr = error1(Specs)
|
|
)
|
|
else
|
|
TermStr = describe_error_term(VarSet, Term),
|
|
Pieces = [words("Error: expected an argument size constraint,"),
|
|
words("got"), quote(TermStr), suffix("."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(Term), Pieces),
|
|
MaybeConstr = error1([Spec])
|
|
).
|
|
|
|
:- pred parse_lp_term(varset::in, term::in, maybe1(arg_size_term)::out) is det.
|
|
|
|
parse_lp_term(VarSet, Term, MaybeLpTerm) :-
|
|
( if
|
|
Term = term.functor(term.atom("term"), [VarIdTerm, CoeffTerm], _)
|
|
then
|
|
( if term_int.decimal_term_to_int(VarIdTerm, VarId0) then
|
|
MaybeVarId = ok1(VarId0)
|
|
else
|
|
VarIdTermStr = describe_error_term(VarSet, VarIdTerm),
|
|
Pieces = [words("Error: expected an integer,"),
|
|
words("got"), quote(VarIdTermStr), suffix("."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(VarIdTerm), Pieces),
|
|
MaybeVarId = error1([Spec])
|
|
),
|
|
parse_rational(VarSet, CoeffTerm, MaybeCoeff),
|
|
( if
|
|
MaybeVarId = ok1(VarId),
|
|
MaybeCoeff = ok1(Coeff)
|
|
then
|
|
LpTerm = arg_size_term(VarId, Coeff),
|
|
MaybeLpTerm = ok1(LpTerm)
|
|
else
|
|
Specs = get_any_errors1(MaybeVarId) ++
|
|
get_any_errors1(MaybeCoeff),
|
|
MaybeLpTerm = error1(Specs)
|
|
)
|
|
else
|
|
TermStr = describe_error_term(VarSet, Term),
|
|
Pieces = [words("Error: expected a linear term of the form"),
|
|
quote("term(<varnum>, <rational_coeff>)"), suffix(","),
|
|
words("got"), quote(TermStr), suffix("."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(Term), Pieces),
|
|
MaybeLpTerm = error1([Spec])
|
|
).
|
|
|
|
:- pred parse_rational(varset::in, term::in, maybe1(rat)::out) is det.
|
|
|
|
parse_rational(VarSet, Term, MaybeRational) :-
|
|
( if
|
|
Term = term.functor(term.atom("r"), [NumerTerm, DenomTerm], _),
|
|
term_int.decimal_term_to_int(NumerTerm, Numer),
|
|
term_int.decimal_term_to_int(DenomTerm, Denom)
|
|
then
|
|
Rational = rat.rat(Numer, Denom),
|
|
MaybeRational = ok1(Rational)
|
|
else
|
|
TermStr = describe_error_term(VarSet, Term),
|
|
Pieces = [words("Error: expected a rational number of the form"),
|
|
quote("r(N, M)"), suffix(","),
|
|
words("got"), quote(TermStr), suffix("."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(Term), Pieces),
|
|
MaybeRational = error1([Spec])
|
|
).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
|
|
parse_pragma_structure_sharing(ModuleName, VarSet, ErrorTerm, PragmaTerms,
|
|
Context, SeqNum, MaybeIOM) :-
|
|
( if
|
|
PragmaTerms = [PredAndModesTerm0, HeadVarsTerm,
|
|
HeadVarTypesTerm, SharingInformationTerm],
|
|
ModesContextPieces = cord.from_list([words("In"),
|
|
pragma_decl("structure_sharing"), words("declaration:"), nl]),
|
|
parse_pred_or_func_and_arg_modes(yes(ModuleName), ModesContextPieces,
|
|
VarSet, PredAndModesTerm0, MaybeNameAndModes),
|
|
MaybeNameAndModes = ok3(PredName, PredOrFunc, Modes),
|
|
|
|
% Parse the head variables:
|
|
HeadVarsTerm = term.functor(term.atom("vars"), ListHVTerms, _),
|
|
term_vars.vars_in_terms(ListHVTerms, HeadVarsGeneric),
|
|
list.map(term.coerce_var, HeadVarsGeneric, HeadVars),
|
|
|
|
% Parse the types:
|
|
HeadVarTypesTerm = term.functor(term.atom("types"), ListTypeTerms, _),
|
|
maybe_parse_types(no_allow_ho_inst_info(wnhii_pragma_struct_sharing),
|
|
ListTypeTerms, Types),
|
|
|
|
% Parse the actual structure sharing information.
|
|
|
|
SharingInformationTerm = term.functor(term.atom(SharingFunctor),
|
|
SharingArgTerms, _),
|
|
(
|
|
SharingFunctor = "not_available",
|
|
% XXX Why don't we test SharingArgTerms?
|
|
MaybeSharingAs = no
|
|
;
|
|
SharingFunctor = "yes",
|
|
SharingArgTerms = [SharingAsTerm],
|
|
MaybeSharingAs = yes(parse_structure_sharing_domain(SharingAsTerm))
|
|
)
|
|
then
|
|
PredNameModesPF = proc_pf_name_modes(PredOrFunc, PredName, Modes),
|
|
varset.coerce(VarSet, ProgVarSet),
|
|
varset.coerce(VarSet, TVarSet),
|
|
Sharing = decl_pragma_struct_sharing_info(PredNameModesPF, HeadVars,
|
|
Types, ProgVarSet, TVarSet, MaybeSharingAs, Context, SeqNum),
|
|
Item = item_decl_pragma(decl_pragma_struct_sharing(Sharing)),
|
|
MaybeIOM = ok1(iom_item(Item))
|
|
else
|
|
Pieces = [words("Syntax error in"),
|
|
pragma_decl("structure_sharing"), words("declaration."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ErrorTerm), Pieces),
|
|
MaybeIOM = error1([Spec])
|
|
).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
|
|
parse_pragma_structure_reuse(ModuleName, VarSet, ErrorTerm, PragmaTerms,
|
|
Context, SeqNum, MaybeIOM) :-
|
|
( if
|
|
PragmaTerms = [PredAndModesTerm0, HeadVarsTerm,
|
|
HeadVarTypesTerm, MaybeStructureReuseTerm],
|
|
ReuseContextPieces = cord.from_list([words("In"),
|
|
pragma_decl("structure_reuse"), words("declaration:"), nl]),
|
|
parse_pred_or_func_and_arg_modes(yes(ModuleName), ReuseContextPieces,
|
|
VarSet, PredAndModesTerm0, MaybeNameAndModes),
|
|
MaybeNameAndModes = ok3(PredName, PredOrFunc, Modes),
|
|
|
|
% Parse the head variables:
|
|
HeadVarsTerm = term.functor(term.atom("vars"), ListHVTerms, _),
|
|
term_vars.vars_in_terms(ListHVTerms, HeadVarsGeneric),
|
|
list.map(term.coerce_var, HeadVarsGeneric, HeadVars),
|
|
|
|
% Parse the types:
|
|
HeadVarTypesTerm = term.functor(term.atom("types"), ListTypeTerms, _),
|
|
maybe_parse_types(no_allow_ho_inst_info(wnhii_pragma_struct_reuse),
|
|
ListTypeTerms, Types),
|
|
|
|
% Parse the actual structure reuse information.
|
|
MaybeStructureReuseTerm = term.functor(term.atom(ReuseFunctor),
|
|
ReuseArgTerms, _),
|
|
(
|
|
ReuseFunctor = "not_available",
|
|
% XXX Why don't we test ReuseArgTerms?
|
|
MaybeStructureReuse = no
|
|
;
|
|
ReuseFunctor = "yes",
|
|
ReuseArgTerms = [StructureReuseTerm],
|
|
StructureReuse = parse_structure_reuse_domain(StructureReuseTerm),
|
|
MaybeStructureReuse = yes(StructureReuse)
|
|
)
|
|
then
|
|
PredNameModesPF = proc_pf_name_modes(PredOrFunc, PredName, Modes),
|
|
varset.coerce(VarSet, ProgVarSet),
|
|
varset.coerce(VarSet, TVarSet),
|
|
Reuse = decl_pragma_struct_reuse_info(PredNameModesPF, HeadVars, Types,
|
|
ProgVarSet, TVarSet, MaybeStructureReuse, Context, SeqNum),
|
|
Item = item_decl_pragma(decl_pragma_struct_reuse(Reuse)),
|
|
MaybeIOM = ok1(iom_item(Item))
|
|
else
|
|
Pieces = [words("Syntax error in"),
|
|
pragma_decl("structure_reuse"), words("declaration."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ErrorTerm), Pieces),
|
|
MaybeIOM = error1([Spec])
|
|
).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
|
|
parse_pragma_exceptions(ModuleName, VarSet, ErrorTerm, PragmaTerms,
|
|
Context, SeqNum, MaybeIOM) :-
|
|
(
|
|
PragmaTerms = [PredOrFuncTerm, PredNameTerm, ArityTerm, ModeNumTerm,
|
|
ThrowStatusTerm],
|
|
parse_predicate_or_function(VarSet, PredOrFuncTerm, MaybePredOrFunc),
|
|
PNContextPieces = cord.from_list(
|
|
[words("In the second argument of"), pragma_decl("exceptions"),
|
|
words("declaration:"), nl]),
|
|
parse_implicitly_qualified_sym_name_and_no_args(ModuleName,
|
|
VarSet, PNContextPieces, PredNameTerm, MaybePredName),
|
|
ArityContextPieces = cord.from_list(
|
|
[words("In the third argument of an"),
|
|
pragma_decl("unused_args"), words("declaration:"), nl]),
|
|
parse_decimal_int(ArityContextPieces, VarSet, ArityTerm, MaybeArity),
|
|
ModeNumContextPieces = cord.from_list(
|
|
[words("In the fourth argument of an"),
|
|
pragma_decl("unused_args"), words("declaration:"), nl]),
|
|
parse_decimal_int(ModeNumContextPieces, VarSet, ModeNumTerm,
|
|
MaybeModeNum),
|
|
( if
|
|
ThrowStatusTerm = term.functor(term.atom(ThrowStatusFunctor),
|
|
ThrowStatusArgTerms, _),
|
|
( ThrowStatusFunctor = "will_not_throw"
|
|
; ThrowStatusFunctor = "may_throw"
|
|
; ThrowStatusFunctor = "conditional"
|
|
)
|
|
then
|
|
(
|
|
ThrowStatusFunctor = "will_not_throw",
|
|
(
|
|
ThrowStatusArgTerms = [],
|
|
MaybeThrowStatus = ok1(will_not_throw)
|
|
;
|
|
ThrowStatusArgTerms = [_ | _],
|
|
WillNotThrowPieces =
|
|
[words("In the fifth argument of"),
|
|
pragma_decl("exceptions"), words("declaration:"), nl,
|
|
words("error:"), quote("will_not_throw"),
|
|
words("must have no arguments."), nl],
|
|
WillNotThrowSpec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ThrowStatusTerm), WillNotThrowPieces),
|
|
MaybeThrowStatus = error1([WillNotThrowSpec])
|
|
)
|
|
;
|
|
ThrowStatusFunctor = "may_throw",
|
|
( if
|
|
ThrowStatusArgTerms = [ExceptionTypeTerm],
|
|
ExceptionTypeTerm = term.functor(
|
|
term.atom(ExceptionFunctor), [], _),
|
|
(
|
|
ExceptionFunctor = "user_exception",
|
|
ExceptionType = user_exception
|
|
;
|
|
ExceptionFunctor = "type_exception",
|
|
ExceptionType = type_exception
|
|
)
|
|
then
|
|
MaybeThrowStatus = ok1(may_throw(ExceptionType))
|
|
else
|
|
MayThrowPieces =
|
|
[words("In the fifth argument of"),
|
|
pragma_decl("exceptions"), words("declaration:"), nl,
|
|
words("error:"), quote("may_throw"),
|
|
words("must have one argument,"),
|
|
words("which must be either"),
|
|
quote("user_exception"), words("or"),
|
|
quote("type_exception"), suffix("."), nl],
|
|
MayThrowSpec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ThrowStatusTerm), MayThrowPieces),
|
|
MaybeThrowStatus = error1([MayThrowSpec])
|
|
)
|
|
;
|
|
ThrowStatusFunctor = "conditional",
|
|
(
|
|
ThrowStatusArgTerms = [],
|
|
MaybeThrowStatus = ok1(throw_conditional)
|
|
;
|
|
ThrowStatusArgTerms = [_ | _],
|
|
ConditionalPieces =
|
|
[words("In the fifth argument of"),
|
|
pragma_decl("exceptions"), words("declaration:"), nl,
|
|
words("error:"), quote("conditional"),
|
|
words("must have no arguments."), nl],
|
|
ConditionalSpec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ThrowStatusTerm), ConditionalPieces),
|
|
MaybeThrowStatus = error1([ConditionalSpec])
|
|
)
|
|
)
|
|
else
|
|
ThrowStatusTermStr = describe_error_term(VarSet, ThrowStatusTerm),
|
|
ThrowStatusPieces = [words("In the fifth argument of"),
|
|
pragma_decl("exceptions"), words("declaration:"), nl,
|
|
words("error: expected one of"),
|
|
quote("will_not_throw"), suffix(","),
|
|
quote("may_throw"), suffix(","), words("and"),
|
|
quote("conditional"), suffix(","),
|
|
words("got"), quote(ThrowStatusTermStr), suffix("."), nl],
|
|
ThrowStatusSpec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ThrowStatusTerm), ThrowStatusPieces),
|
|
MaybeThrowStatus = error1([ThrowStatusSpec])
|
|
),
|
|
( if
|
|
MaybePredOrFunc = ok1(PredOrFunc),
|
|
MaybePredName = ok1(PredName),
|
|
MaybeArity = ok1(Arity),
|
|
MaybeModeNum = ok1(ModeNum),
|
|
MaybeThrowStatus = ok1(ThrowStatus)
|
|
then
|
|
PredNameArityPFMn = proc_pf_name_arity_mn(PredOrFunc,
|
|
PredName, user_arity(Arity), ModeNum),
|
|
Exceptions = gen_pragma_exceptions_info(PredNameArityPFMn,
|
|
ThrowStatus, Context, SeqNum),
|
|
Item = item_generated_pragma(gen_pragma_exceptions(Exceptions)),
|
|
MaybeIOM = ok1(iom_item(Item))
|
|
else
|
|
Specs = get_any_errors1(MaybePredOrFunc) ++
|
|
get_any_errors1(MaybePredName) ++
|
|
get_any_errors1(MaybeArity) ++
|
|
get_any_errors1(MaybeModeNum) ++
|
|
get_any_errors1(MaybeThrowStatus),
|
|
MaybeIOM = error1(Specs)
|
|
)
|
|
;
|
|
( PragmaTerms = []
|
|
; PragmaTerms = [_]
|
|
; PragmaTerms = [_, _]
|
|
; PragmaTerms = [_, _, _]
|
|
; PragmaTerms = [_, _, _, _]
|
|
; PragmaTerms = [_, _, _, _, _, _ | _]
|
|
),
|
|
Pieces = [words("Error: an"), pragma_decl("exceptions"),
|
|
words("declaration must have five arguments."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ErrorTerm), Pieces),
|
|
MaybeIOM = error1([Spec])
|
|
).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
|
|
parse_pragma_trailing_info(ModuleName, VarSet, ErrorTerm, PragmaTerms,
|
|
Context, SeqNum, MaybeIOM) :-
|
|
(
|
|
PragmaTerms = [PredOrFuncTerm, PredNameTerm, ArityTerm, ModeNumTerm,
|
|
TrailingStatusTerm],
|
|
parse_predicate_or_function(VarSet, PredOrFuncTerm, MaybePredOrFunc),
|
|
PNContextPieces = cord.from_list(
|
|
[words("In the second argument of"), pragma_decl("traling_info"),
|
|
words("declaration:"), nl]),
|
|
parse_implicitly_qualified_sym_name_and_no_args(ModuleName,
|
|
VarSet, PNContextPieces, PredNameTerm, MaybePredName),
|
|
ArityContextPieces = cord.from_list(
|
|
[words("In the third argument of an"),
|
|
pragma_decl("unused_args"), words("declaration:"), nl]),
|
|
parse_decimal_int(ArityContextPieces, VarSet, ArityTerm, MaybeArity),
|
|
ModeNumContextPieces = cord.from_list(
|
|
[words("In the fourth argument of an"),
|
|
pragma_decl("unused_args"), words("declaration:"), nl]),
|
|
parse_decimal_int(ModeNumContextPieces, VarSet, ModeNumTerm,
|
|
MaybeModeNum),
|
|
( if
|
|
TrailingStatusTerm = term.functor(term.atom(TrailingStatusFunctor),
|
|
[], _),
|
|
(
|
|
TrailingStatusFunctor = "will_not_modify_trail",
|
|
TrailingStatus0 = trail_will_not_modify
|
|
;
|
|
TrailingStatusFunctor = "may_modify_trail",
|
|
TrailingStatus0 = trail_may_modify
|
|
;
|
|
TrailingStatusFunctor = "conditional",
|
|
TrailingStatus0 = trail_conditional
|
|
)
|
|
then
|
|
MaybeTrailingStatus = ok1(TrailingStatus0)
|
|
else
|
|
TrailingStatusTermStr =
|
|
describe_error_term(VarSet, TrailingStatusTerm),
|
|
TrailingStatusPieces = [words("In the fifth argument of"),
|
|
pragma_decl("trailing_info"), words("declaration:"), nl,
|
|
words("error: expected one of"),
|
|
quote("will_not_modify_trail"), suffix(","),
|
|
quote("may_modify_trail"), suffix(","), words("and"),
|
|
quote("conditional"), suffix(","),
|
|
words("got"), quote(TrailingStatusTermStr), suffix("."), nl],
|
|
TrailingStatusSpec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(TrailingStatusTerm), TrailingStatusPieces),
|
|
MaybeTrailingStatus = error1([TrailingStatusSpec])
|
|
),
|
|
( if
|
|
MaybePredOrFunc = ok1(PredOrFunc),
|
|
MaybePredName = ok1(PredName),
|
|
MaybeArity = ok1(Arity),
|
|
MaybeModeNum = ok1(ModeNum),
|
|
MaybeTrailingStatus = ok1(TrailingStatus)
|
|
then
|
|
PredNameArityPFMn = proc_pf_name_arity_mn(PredOrFunc,
|
|
PredName, user_arity(Arity), ModeNum),
|
|
Trailing = gen_pragma_trailing_info(PredNameArityPFMn,
|
|
TrailingStatus, Context, SeqNum),
|
|
Item = item_generated_pragma(gen_pragma_trailing(Trailing)),
|
|
MaybeIOM = ok1(iom_item(Item))
|
|
else
|
|
Specs = get_any_errors1(MaybePredOrFunc) ++
|
|
get_any_errors1(MaybePredName) ++
|
|
get_any_errors1(MaybeArity) ++
|
|
get_any_errors1(MaybeModeNum) ++
|
|
get_any_errors1(MaybeTrailingStatus),
|
|
MaybeIOM = error1(Specs)
|
|
)
|
|
;
|
|
( PragmaTerms = []
|
|
; PragmaTerms = [_]
|
|
; PragmaTerms = [_, _]
|
|
; PragmaTerms = [_, _, _]
|
|
; PragmaTerms = [_, _, _, _]
|
|
; PragmaTerms = [_, _, _, _, _, _ | _]
|
|
),
|
|
Pieces = [words("Error:"), pragma_decl("trailing_info"),
|
|
words("declaration must have five arguments."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ErrorTerm), Pieces),
|
|
MaybeIOM = error1([Spec])
|
|
).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
|
|
parse_pragma_mm_tabling_info(ModuleName, VarSet, ErrorTerm, PragmaTerms,
|
|
Context, SeqNum, MaybeIOM) :-
|
|
(
|
|
PragmaTerms = [PredOrFuncTerm, PredNameTerm, ArityTerm, ModeNumTerm,
|
|
MMTablingStatusTerm],
|
|
parse_predicate_or_function(VarSet, PredOrFuncTerm, MaybePredOrFunc),
|
|
PNContextPieces = cord.from_list(
|
|
[words("In the second argument of"),
|
|
pragma_decl("mm_tabling_info"), words("declaration:"), nl]),
|
|
parse_implicitly_qualified_sym_name_and_no_args(ModuleName,
|
|
VarSet, PNContextPieces, PredNameTerm, MaybePredName),
|
|
ArityContextPieces = cord.from_list(
|
|
[words("In the third argument of an"),
|
|
pragma_decl("mm_tabling_info"), words("declaration:"), nl]),
|
|
parse_decimal_int(ArityContextPieces, VarSet, ArityTerm, MaybeArity),
|
|
ModeNumContextPieces = cord.from_list(
|
|
[words("In the fourth argument of an"),
|
|
pragma_decl("mm_tabling_info"), words("declaration:"), nl]),
|
|
parse_decimal_int(ModeNumContextPieces, VarSet, ModeNumTerm,
|
|
MaybeModeNum),
|
|
( if
|
|
MMTablingStatusTerm = term.functor(
|
|
term.atom(MMTablingStatusFunctor), [], _),
|
|
(
|
|
MMTablingStatusFunctor = "mm_tabled_will_not_call",
|
|
MMTablingStatus0 = mm_tabled_will_not_call
|
|
;
|
|
MMTablingStatusFunctor = "mm_tabled_may_call",
|
|
MMTablingStatus0 = mm_tabled_may_call
|
|
;
|
|
MMTablingStatusFunctor = "mm_tabled_conditional",
|
|
MMTablingStatus0 = mm_tabled_conditional
|
|
)
|
|
then
|
|
MaybeMMTablingStatus = ok1(MMTablingStatus0)
|
|
else
|
|
MMTablingStatusTermStr =
|
|
describe_error_term(VarSet, MMTablingStatusTerm),
|
|
MMTablingStatusPieces = [words("In the fifth argument of"),
|
|
pragma_decl("mm_tabling_info"), words("declaration:"), nl,
|
|
words("error: expected one of"),
|
|
quote("will_not_modify_trail"), suffix(","),
|
|
quote("may_modify_trail"), suffix(","), words("and"),
|
|
quote("conditional"), suffix(","),
|
|
words("got"), quote(MMTablingStatusTermStr), suffix("."), nl],
|
|
MMTablingStatusSpec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(MMTablingStatusTerm), MMTablingStatusPieces),
|
|
MaybeMMTablingStatus = error1([MMTablingStatusSpec])
|
|
),
|
|
( if
|
|
MaybePredOrFunc = ok1(PredOrFunc),
|
|
MaybePredName = ok1(PredName),
|
|
MaybeArity = ok1(Arity),
|
|
MaybeModeNum = ok1(ModeNum),
|
|
MaybeMMTablingStatus = ok1(MMTablingStatus)
|
|
then
|
|
PredNameArityPFMn = proc_pf_name_arity_mn(PredOrFunc,
|
|
PredName, user_arity(Arity), ModeNum),
|
|
Tabling = gen_pragma_mm_tabling_info(PredNameArityPFMn,
|
|
MMTablingStatus, Context, SeqNum),
|
|
Item = item_generated_pragma(gen_pragma_mm_tabling(Tabling)),
|
|
MaybeIOM = ok1(iom_item(Item))
|
|
else
|
|
Specs = get_any_errors1(MaybePredOrFunc) ++
|
|
get_any_errors1(MaybePredName) ++
|
|
get_any_errors1(MaybeArity) ++
|
|
get_any_errors1(MaybeModeNum) ++
|
|
get_any_errors1(MaybeMMTablingStatus),
|
|
MaybeIOM = error1(Specs)
|
|
)
|
|
;
|
|
( PragmaTerms = []
|
|
; PragmaTerms = [_]
|
|
; PragmaTerms = [_, _]
|
|
; PragmaTerms = [_, _, _]
|
|
; PragmaTerms = [_, _, _, _]
|
|
; PragmaTerms = [_, _, _, _, _, _ | _]
|
|
),
|
|
Pieces = [words("Error: an"), pragma_decl("mm_tabling_info"),
|
|
words("declaration must have five arguments."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(ErrorTerm), Pieces),
|
|
MaybeIOM = error1([Spec])
|
|
).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
|
|
:- pred parse_predicate_or_function(varset::in, term::in,
|
|
maybe1(pred_or_func)::out) is det.
|
|
|
|
parse_predicate_or_function(VarSet, Term, MaybePredOrFunc) :-
|
|
( if
|
|
Term = term.functor(term.atom(Functor), [], _),
|
|
(
|
|
Functor = "predicate",
|
|
PredOrFunc = pf_predicate
|
|
;
|
|
Functor = "function",
|
|
PredOrFunc = pf_function
|
|
)
|
|
then
|
|
MaybePredOrFunc = ok1(PredOrFunc)
|
|
else
|
|
TermStr = describe_error_term(VarSet, Term),
|
|
Pieces = [words("Error: expected either"),
|
|
quote("predicate"), words("or"), quote("function"), suffix(","),
|
|
words("got"), quote(TermStr), suffix("."), nl],
|
|
Spec = spec($pred, severity_error, phase_t2pt,
|
|
get_term_context(Term), Pieces),
|
|
MaybePredOrFunc = error1([Spec])
|
|
).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
:- end_module parse_tree.parse_pragma_analysis.
|
|
%---------------------------------------------------------------------------%
|