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https://github.com/Mercury-Language/mercury.git
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d4aec6ecc4
Estimated hours taken 5: Branches: main. This change doesn't alter any functionality. It just cleans up some notation and (hopefully) makes things a little easier to modify in the future. The changes are: - Remove instances of `:' as a module qualifier. - Add more module qualifiers. - Use state variables for threading the IO state. - Use state variables for accumulators. - Remove some unused predicates. extras/moose/check.m: extras/moose/lalr.m: extras/moose/mercury_syntax.m: extras/moose/moose.m: extras/moose/options.m: extras/moose/tables.m: Changes to notation as listed above. extras/moose/grammar.m: Replace calls to predicate grammar.foldl/4 with calls to function array.foldl/3 from standard library. Delete grammar.foldl/4. Other changes as above. extras/moose/misc.m: Remove predicate between/3 since it isn't used anywhere. Other changes as above.
86 lines
2.1 KiB
Mathematica
86 lines
2.1 KiB
Mathematica
%----------------------------------------------------------------------------%
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% Copyright (C) 1998-2000, 2003 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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:- module options.
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:- interface.
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:- import_module getopt, io, list, string.
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:- type option
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---> help
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; verbose
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% Debugging options
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; dump_action
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; dump_first
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; dump_follow
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; dump_goto
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; dump_items
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; dump_rules
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% Output options
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.
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:- type options == option_table(option).
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:- type maybe_options == maybe_option_table(option).
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:- pred parse_options(maybe_options, list(string), io__state, io__state).
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:- mode parse_options(out, out, di, uo) is det.
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:- implementation.
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:- import_module bool, char, std_util.
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parse_options(MOpts, Args, !IO) :-
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io__command_line_arguments(Args0, !IO),
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OptionOpts = option_ops(short, long, defaults),
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getopt__process_options(OptionOpts, Args0, Args, MOpts).
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:- pred short(char, option).
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:- mode short(in, out) is semidet.
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short('h', help).
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short('v', verbose).
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short('a', dump_action).
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short('f', dump_first).
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short('F', dump_follow).
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short('g', dump_goto).
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short('i', dump_items).
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short('r', dump_rules).
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:- pred long(string, option).
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:- mode long(in, out) is semidet.
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long("help", help).
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long("verbose", verbose).
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long("dump-action", dump_action).
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long("dump-first", dump_first).
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long("dump-follow", dump_follow).
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long("dump-goto", dump_goto).
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long("dump-items", dump_items).
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long("dump-rules", dump_rules).
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:- pred defaults(option, option_data).
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:- mode defaults(out, out) is nondet.
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defaults(Opt, Data) :-
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semidet_succeed,
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defaults0(Opt, Data).
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:- pred defaults0(option, option_data).
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:- mode defaults0(out, out) is multi.
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defaults0(help, bool(no)).
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defaults0(verbose, bool(no)).
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defaults0(dump_action, bool(no)).
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defaults0(dump_first, bool(no)).
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defaults0(dump_follow, bool(no)).
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defaults0(dump_goto, bool(no)).
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defaults0(dump_items, bool(no)).
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defaults0(dump_rules, bool(no)).
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