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124 lines
4.2 KiB
Mathematica
124 lines
4.2 KiB
Mathematica
%-----------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%-----------------------------------------------------------------------------%
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% Copyright (C) 1997-2006, 2009-2010 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: compiler_util.
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% Main author: zs.
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%
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% This module contains code that can be helpful in any compiler module.
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%
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%-----------------------------------------------------------------------------%
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:- module libs.compiler_util.
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:- interface.
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:- import_module libs.globals.
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:- import_module parse_tree.
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:- import_module parse_tree.error_util.
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:- import_module io.
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:- import_module list.
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%-----------------------------------------------------------------------------%
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% This type is useful when defining options and behaviours that may
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% raise either an error or a warning. See
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% pragma_require_tail_recursion.
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%
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:- type warning_or_error
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---> we_warning
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; we_error.
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% warning_or_error_string(we_warning, "warn").
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% warning_or_error_string(we_error, "error").
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%
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:- pred warning_or_error_string(warning_or_error, string).
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:- mode warning_or_error_string(in, out) is det.
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:- mode warning_or_error_string(out, in) is semidet.
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:- pred warning_or_error_severity(warning_or_error::in, error_severity::out)
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is det.
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%-----------------------------------------------------------------------------%
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:- pred add_error(error_phase::in, list(format_component)::in,
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list(error_spec)::in, list(error_spec)::out) is det.
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:- pred add_warning(error_phase::in, list(format_component)::in,
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list(error_spec)::in, list(error_spec)::out) is det.
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%-----------------------------------------------------------------------------%
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% Record the fact that a warning has been issued; set the exit status
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% to error if the `--halt-at-warn' option is set.
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%
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:- pred record_warning(globals::in, io::di, io::uo) is det.
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% Report a warning, and set the exit status to error if the
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% `--halt-at-warn' option is set.
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%
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:- pred report_warning(globals::in, string::in, io::di, io::uo) is det.
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% Report a warning to the specified stream, and set the exit status
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% to error if the --halt-at-warn option is set.
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%
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:- pred report_warning_to_stream(globals::in, io.output_stream::in, string::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 libs.options.
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:- import_module bool.
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:- import_module maybe.
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%-----------------------------------------------------------------------------%
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warning_or_error_string(we_warning, "warn").
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warning_or_error_string(we_error, "error").
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warning_or_error_severity(we_warning, severity_warning).
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warning_or_error_severity(we_error, severity_error).
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%-----------------------------------------------------------------------------%
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add_error(Phase, Pieces, !Specs) :-
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Msg = error_msg(no, do_not_treat_as_first, 0, [always(Pieces)]),
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Spec = error_spec(severity_error, Phase, [Msg]),
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!:Specs = [Spec | !.Specs].
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add_warning(Phase, Pieces, !Specs) :-
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Msg = error_msg(no, do_not_treat_as_first, 0, [always(Pieces)]),
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Spec = error_spec(severity_warning, Phase, [Msg]),
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!:Specs = [Spec | !.Specs].
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%-----------------------------------------------------------------------------%
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record_warning(Globals, !IO) :-
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globals.lookup_bool_option(Globals, halt_at_warn, HaltAtWarn),
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(
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HaltAtWarn = yes,
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io.set_exit_status(1, !IO)
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;
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HaltAtWarn = no
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).
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report_warning(Globals, Message, !IO) :-
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record_warning(Globals, !IO),
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io.write_string(Message, !IO).
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report_warning_to_stream(Globals, Stream, Message, !IO) :-
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record_warning(Globals, !IO),
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io.write_string(Stream, Message, !IO).
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%-----------------------------------------------------------------------------%
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:- end_module libs.compiler_util.
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%-----------------------------------------------------------------------------%
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