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mercury/compiler/globals.m
Julien Fischer 5f589e98fb Various cleanups for the modules in the compiler directory.
Estimated hours taken: 4
Branches: main

Various cleanups for the modules in the compiler directory.  The are
no changes to algorithms except the replacement of some if-then-elses
that would naturally be switches with switches and the replacement of
most of the calls to error/1.

compiler/*.m:
	Convert calls to error/1 to calls to unexpected/2 or sorry/2 as
	appropriate throughout most or the compiler.

	Fix inaccurate assertion failure messages, e.g. identifying the
	assertion failure as taking place in the wrong module.

	Add :- end_module declarations.

	Fix formatting problems and bring the positioning of comments
	into line with our current coding standards.

	Fix some overlong lines.

	Convert some more modules to 4-space indentation.  Fix some spots
	where previous conversions to 4-space indentation have stuffed
	the formatting of the code up.

	Fix a bunch of typos in comments.

	Use state variables in more places; use library predicates
	from the sv* modules where appropriate.

	Delete unnecessary and duplicate module imports.

	Misc. other small cleanups.
2005-11-17 15:57:34 +00:00

711 lines
27 KiB
Mathematica

%-----------------------------------------------------------------------------%
% vim: ft=mercury ts=4 sw=4 et
%-----------------------------------------------------------------------------%
% Copyright (C) 1994-2005 The University of Melbourne.
% This file may only be copied under the terms of the GNU General
% Public License - see the file COPYING in the Mercury distribution.
%-----------------------------------------------------------------------------%
% File: globals.m.
% Main author: fjh.
% This module exports the `globals' type and associated access predicates.
% The globals type is used to collect together all the various data
% that would be global variables in an imperative language.
% This global data is stored in the io__state.
%-----------------------------------------------------------------------------%
:- module libs__globals.
:- interface.
:- import_module libs.options.
:- import_module libs.trace_params.
:- import_module mdbcomp.
:- import_module mdbcomp.prim_data. % for module_name
:- import_module bool.
:- import_module getopt_io.
:- import_module io.
:- import_module list.
:- import_module map.
:- import_module std_util.
%-----------------------------------------------------------------------------%
:- type globals.
:- type compilation_target
---> c % Generate C code (including GNU C)
; il % Generate IL assembler code
% IL is the Microsoft .NET Intermediate Language
; java % Generate Java
% (Work in progress)
; asm. % Compile directly to assembler via the GCC back-end.
% Do not go via C, instead generate GCC's internal
% `tree' data structure. (Work in progress.)
:- type foreign_language
---> c
% ; cplusplus
; csharp
; managed_cplusplus
; java
; il.
% A string representation of the compilation target suitable
% for use in human-readable error messages.
%
:- func compilation_target_string(compilation_target) = string.
% A string representation of the foreign language suitable
% for use in human-readable error messages.
%
:- func foreign_language_string(foreign_language) = string.
% A string representation of the foreign language suitable
% for use in machine-readable name mangling.
%
:- func simple_foreign_language_string(foreign_language) = string.
% The GC method specifies how we do garbage collection.
% The last four alternatives are for the C and asm back-ends;
% the first alternative is for compiling to IL or Java,
% where the target language implementation handles garbage
% collection automatically.
%
:- type gc_method
---> automatic % It is the responsibility of the target language
% that we are compiling to to handle GC.
; none % No garbage collection.
% But memory may be recovered on backtracking,
% if the --reclaim-heap-on-*failure options are set.
; boehm % The Boehm et al conservative collector.
; mps % A different conservative collector, based on
% Ravenbrook Limited's MPS (Memory Pool System) kit.
% Benchmarking indicated that this one performed worse
% than the Boehm collector, so we don't really
% support this option anymore.
; accurate. % Our own home-grown copying collector.
% See runtime/mercury_accurate_gc.c
% and compiler/ml_elim_nested.m.
% Returns yes if the GC method is conservative, i.e. if it is `boehm'
% or `mps'. Conservative GC methods don't support heap reclamation
% on failure.
%
:- func gc_is_conservative(gc_method) = bool.
:- type tags_method
---> none
; low
; high.
:- type termination_norm
---> simple
; total
; num_data_elems
; size_data_elems.
% Map from module name to file name.
%
:- type source_file_map == map(module_name, string).
:- type maybe_thread_safe == bool.
:- pred convert_target(string::in, compilation_target::out) is semidet.
:- pred convert_foreign_language(string::in, foreign_language::out) is semidet.
:- pred convert_gc_method(string::in, gc_method::out) is semidet.
:- pred convert_tags_method(string::in, tags_method::out) is semidet.
:- pred convert_termination_norm(string::in, termination_norm::out) is semidet.
:- pred convert_maybe_thread_safe(string::in, maybe_thread_safe::out)
is semidet.
%-----------------------------------------------------------------------------%
%
% Access predicates for the `globals' structure
%
:- pred globals__init(option_table::di, compilation_target::di, gc_method::di,
tags_method::di, termination_norm::di, termination_norm::di,
trace_level::di, trace_suppress_items::di,
maybe_thread_safe::di, globals::uo) is det.
:- pred globals__get_options(globals::in, option_table::out) is det.
:- pred globals__get_target(globals::in, compilation_target::out) is det.
:- pred globals__get_backend_foreign_languages(globals::in,
list(foreign_language)::out) is det.
:- pred globals__get_gc_method(globals::in, gc_method::out) is det.
:- pred globals__get_tags_method(globals::in, tags_method::out) is det.
:- pred globals__get_termination_norm(globals::in, termination_norm::out)
is det.
:- pred globals__get_termination2_norm(globals::in, termination_norm::out)
is det.
:- pred globals__get_trace_level(globals::in, trace_level::out) is det.
:- pred globals__get_trace_suppress(globals::in, trace_suppress_items::out)
is det.
:- pred globals__get_source_file_map(globals::in, maybe(source_file_map)::out)
is det.
:- pred globals__get_maybe_thread_safe(globals::in, maybe_thread_safe::out)
is det.
:- pred globals__get_extra_error_info(globals::in, bool::out) is det.
:- pred globals__set_option(option::in, option_data::in,
globals::in, globals::out) is det.
:- pred globals__set_options(option_table::in, globals::in, globals::out)
is det.
:- pred globals__set_gc_method(gc_method::in, globals::in, globals::out)
is det.
:- pred globals__set_tags_method(tags_method::in, globals::in, globals::out)
is det.
:- pred globals__set_trace_level(trace_level::in, globals::in, globals::out)
is det.
:- pred globals__set_trace_level_none(globals::in, globals::out) is det.
:- pred globals__set_source_file_map(maybe(source_file_map)::in,
globals::in, globals::out) is det.
:- pred globals__set_extra_error_info(bool::in, globals::in, globals::out)
is det.
:- pred globals__lookup_option(globals::in, option::in, option_data::out)
is det.
:- pred globals__lookup_bool_option(globals, option, bool).
:- mode globals__lookup_bool_option(in, in, out) is det.
:- mode globals__lookup_bool_option(in, in, in) is semidet. % implied
:- pred globals__lookup_int_option(globals::in, option::in, int::out) is det.
:- pred globals__lookup_string_option(globals::in, option::in, string::out)
is det.
:- pred globals__lookup_maybe_string_option(globals::in, option::in,
maybe(string)::out) is det.
:- pred globals__lookup_accumulating_option(globals::in, option::in,
list(string)::out) is det.
%-----------------------------------------------------------------------------%
%
% More complex options
%
% Check if static code addresses are available in the
% current grade of compilation.
%
:- pred globals__have_static_code_addresses(globals::in, bool::out) is det.
% Check if we should include variable information in the layout
% structures of call return sites.
%
:- pred globals__want_return_var_layouts(globals::in, bool::out) is det.
% globals__imported_is_constant(NonLocalGotos, AsmLabels, IsConst)
% figures out whether an imported label address is a constant.
% This depends on how we treat labels.
%
:- pred globals__imported_is_constant(bool::in, bool::in, bool::out) is det.
%-----------------------------------------------------------------------------%
%
% Access predicates for storing a `globals' structure in the io.state
% using io.set_globals and io.get_globals.
%
:- pred globals__io_init(option_table::di, compilation_target::in,
gc_method::in, tags_method::in, termination_norm::in,
termination_norm::in, trace_level::in, trace_suppress_items::in,
maybe_thread_safe::in, io::di, io::uo) is det.
:- pred globals__io_get_target(compilation_target::out, io::di, io::uo) is det.
:- pred globals__io_get_backend_foreign_languages(list(foreign_language)::out,
io::di, io::uo) is det.
:- pred globals__io_lookup_foreign_language_option(option::in,
foreign_language::out, io::di, io::uo) is det.
:- pred globals__io_get_gc_method(gc_method::out, io::di, io::uo) is det.
:- pred globals__io_get_tags_method(tags_method::out, io::di, io::uo) is det.
:- pred globals__io_get_termination_norm(termination_norm::out,
io::di, io::uo) is det.
:- pred globals__io_get_termination2_norm(termination_norm::out,
io::di, io::uo) is det.
:- pred globals__io_get_trace_level(trace_level::out, io::di, io::uo) is det.
:- pred globals__io_get_trace_suppress(trace_suppress_items::out,
io::di, io::uo) is det.
:- pred globals__io_get_maybe_thread_safe(maybe_thread_safe::out,
io::di, io::uo) is det.
:- pred globals__io_get_extra_error_info(bool::out, io::di, io::uo) is det.
:- pred globals__io_get_globals(globals::out, io::di, io::uo) is det.
:- pred globals__io_set_globals(globals::di, io::di, io::uo) is det.
:- pred globals__io_set_option(option::in, option_data::in,
io::di, io::uo) is det.
:- pred globals__io_set_gc_method(gc_method::in, io::di, io::uo) is det.
:- pred globals__io_set_tags_method(tags_method::in, io::di, io::uo) is det.
:- pred globals__io_set_trace_level(trace_level::in, io::di, io::uo) is det.
:- pred globals__io_set_trace_level_none(io::di, io::uo) is det.
:- pred globals__io_set_extra_error_info(bool::in, io::di, io::uo) is det.
:- pred globals__io_lookup_option(option::in, option_data::out,
io::di, io::uo) is det.
:- pred globals__io_lookup_bool_option(option::in, bool::out,
io::di, io::uo) is det.
:- pred globals__io_lookup_int_option(option::in, int::out,
io::di, io::uo) is det.
:- pred globals__io_lookup_string_option(option::in, string::out,
io::di, io::uo) is det.
:- pred globals__io_lookup_maybe_string_option(option::in, maybe(string)::out,
io::di, io::uo) is det.
:- pred globals__io_lookup_accumulating_option(option::in, list(string)::out,
io::di, io::uo) is det.
:- pred globals__io_printing_usage(bool::out, io::di, io::uo) is det.
%-----------------------------------------------------------------------------%
%-----------------------------------------------------------------------------%
:- implementation.
:- import_module libs.compiler_util.
:- import_module map.
:- import_module std_util.
:- import_module string.
%-----------------------------------------------------------------------------%
convert_target(String, Target) :-
convert_target_2(string__to_lower(String), Target).
:- pred convert_target_2(string::in, compilation_target::out) is semidet.
convert_target_2("java", java).
convert_target_2("asm", asm).
convert_target_2("il", il).
convert_target_2("c", c).
convert_foreign_language(String, ForeignLanguage) :-
convert_foreign_language_2(string__to_lower(String), ForeignLanguage).
:- pred convert_foreign_language_2(string::in, foreign_language::out)
is semidet.
convert_foreign_language_2("c", c).
convert_foreign_language_2("mc++", managed_cplusplus).
convert_foreign_language_2("managedc++", managed_cplusplus).
convert_foreign_language_2("managed c++", managed_cplusplus).
convert_foreign_language_2("c#", csharp).
convert_foreign_language_2("csharp", csharp).
convert_foreign_language_2("c sharp", csharp).
convert_foreign_language_2("il", il).
convert_foreign_language_2("java", java).
convert_gc_method("none", none).
convert_gc_method("conservative", boehm).
convert_gc_method("boehm", boehm).
convert_gc_method("mps", mps).
convert_gc_method("accurate", accurate).
convert_gc_method("automatic", automatic).
convert_tags_method("none", none).
convert_tags_method("low", low).
convert_tags_method("high", high).
convert_termination_norm("simple", simple).
convert_termination_norm("total", total).
convert_termination_norm("num-data-elems", num_data_elems).
convert_termination_norm("size-data-elems", size_data_elems).
convert_maybe_thread_safe("yes", yes).
convert_maybe_thread_safe("no", no).
compilation_target_string(c) = "C".
compilation_target_string(il) = "IL".
compilation_target_string(java) = "Java".
compilation_target_string(asm) = "asm".
foreign_language_string(c) = "C".
foreign_language_string(managed_cplusplus) = "Managed C++".
foreign_language_string(csharp) = "C#".
foreign_language_string(il) = "IL".
foreign_language_string(java) = "Java".
simple_foreign_language_string(c) = "c".
simple_foreign_language_string(managed_cplusplus) = "cpp". % XXX mcpp is better
simple_foreign_language_string(csharp) = "csharp".
simple_foreign_language_string(il) = "il".
simple_foreign_language_string(java) = "java".
gc_is_conservative(boehm) = yes.
gc_is_conservative(mps) = yes.
gc_is_conservative(none) = no.
gc_is_conservative(accurate) = no.
gc_is_conservative(automatic) = no.
%-----------------------------------------------------------------------------%
:- type globals
---> globals(
options :: option_table,
target :: compilation_target,
gc_method :: gc_method,
tags_method :: tags_method,
termination_norm :: termination_norm,
termination2_norm :: termination_norm,
trace_level :: trace_level,
trace_suppress_items :: trace_suppress_items,
source_file_map :: maybe(source_file_map),
have_printed_usage :: bool,
maybe_thread_safe :: bool,
extra_error_info :: bool
% Is there extra information
% about errors available, that
% could be printed out if `-E'
% were enabled.
).
globals__init(Options, Target, GC_Method, TagsMethod,
TerminationNorm, Termination2Norm, TraceLevel, TraceSuppress,
MaybeThreadSafe,
globals(Options, Target, GC_Method, TagsMethod,
TerminationNorm, Termination2Norm, TraceLevel, TraceSuppress,
no, no, MaybeThreadSafe, no)).
globals__get_options(Globals, Globals ^ options).
globals__get_target(Globals, Globals ^ target).
globals__get_gc_method(Globals, Globals ^ gc_method).
globals__get_tags_method(Globals, Globals ^ tags_method).
globals__get_termination_norm(Globals, Globals ^ termination_norm).
globals__get_termination2_norm(Globals, Globals ^ termination2_norm).
globals__get_trace_level(Globals, Globals ^ trace_level).
globals__get_trace_suppress(Globals, Globals ^ trace_suppress_items).
globals__get_source_file_map(Globals, Globals ^ source_file_map).
globals__get_maybe_thread_safe(Globals, Globals ^ maybe_thread_safe).
globals__get_extra_error_info(Globals, Globals ^ extra_error_info).
globals__get_backend_foreign_languages(Globals, ForeignLangs) :-
globals__lookup_accumulating_option(Globals, backend_foreign_languages,
LangStrs),
ForeignLangs = list__map(func(String) = ForeignLang :-
( convert_foreign_language(String, ForeignLang0) ->
ForeignLang = ForeignLang0
;
unexpected(this_file, "io_get_backend_foreign_languages: " ++
"invalid foreign_language string")
), LangStrs).
globals__set_options(Options, Globals, Globals ^ options := Options).
globals__set_option(Option, OptionData, !Globals) :-
globals__get_options(!.Globals, OptionTable0),
map__set(OptionTable0, Option, OptionData, OptionTable),
globals__set_options(OptionTable, !Globals).
globals__set_gc_method(GC_Method, Globals, Globals ^ gc_method := GC_Method).
globals__set_tags_method(Tags_Method, Globals,
Globals ^ tags_method := Tags_Method).
globals__set_trace_level(TraceLevel, Globals,
Globals ^ trace_level := TraceLevel).
globals__set_trace_level_none(Globals,
Globals ^ trace_level := trace_level_none).
globals__set_source_file_map(SourceFileMap, Globals,
Globals ^ source_file_map := SourceFileMap).
globals__lookup_option(Globals, Option, OptionData) :-
globals__get_options(Globals, OptionTable),
map__lookup(OptionTable, Option, OptionData).
globals__set_extra_error_info(ExtraErrorInfo, Globals,
Globals ^ extra_error_info := ExtraErrorInfo).
%-----------------------------------------------------------------------------%
globals__lookup_bool_option(Globals, Option, Value) :-
globals__lookup_option(Globals, Option, OptionData),
( OptionData = bool(Bool) ->
Value = Bool
;
unexpected(this_file, "lookup_bool_option: invalid bool option")
).
globals__lookup_string_option(Globals, Option, Value) :-
globals__lookup_option(Globals, Option, OptionData),
( OptionData = string(String) ->
Value = String
;
unexpected(this_file, "lookup_string_option: invalid string option")
).
globals__lookup_int_option(Globals, Option, Value) :-
globals__lookup_option(Globals, Option, OptionData),
( OptionData = int(Int) ->
Value = Int
;
unexpected(this_file, "lookup_int_option: invalid int option")
).
globals__lookup_maybe_string_option(Globals, Option, Value) :-
globals__lookup_option(Globals, Option, OptionData),
( OptionData = maybe_string(MaybeString) ->
Value = MaybeString
;
unexpected(this_file,
"lookup_string_option: invalid maybe_string option")
).
globals__lookup_accumulating_option(Globals, Option, Value) :-
globals__lookup_option(Globals, Option, OptionData),
( OptionData = accumulating(Accumulating) ->
Value = Accumulating
;
unexpected(this_file, "lookup_accumulating_option: "
++ "invalid accumulating option")
).
%-----------------------------------------------------------------------------%
globals__have_static_code_addresses(Globals, IsConst) :-
globals__get_options(Globals, OptionTable),
globals__have_static_code_addresses_2(OptionTable, IsConst).
:- pred globals__have_static_code_addresses_2(option_table::in,
bool::out) is det.
globals__have_static_code_addresses_2(OptionTable, IsConst) :-
getopt_io__lookup_bool_option(OptionTable, gcc_non_local_gotos,
NonLocalGotos),
getopt_io__lookup_bool_option(OptionTable, asm_labels, AsmLabels),
globals__imported_is_constant(NonLocalGotos, AsmLabels, IsConst).
globals__want_return_var_layouts(Globals, WantReturnLayouts) :-
% We need to generate layout info for call return labels
% if we are using accurate gc or if the user wants uplevel printing.
(
(
globals__get_gc_method(Globals, GC_Method),
GC_Method = accurate
;
globals__get_trace_level(Globals, TraceLevel),
globals__get_trace_suppress(Globals, TraceSuppress),
trace_needs_return_info(TraceLevel, TraceSuppress) = yes
)
->
WantReturnLayouts = yes
;
WantReturnLayouts = no
).
% The logic of this function and how it is used to select the default
% type_info method must agree with the code in runtime/typeinfo.h.
globals__imported_is_constant(NonLocalGotos, AsmLabels, IsConst) :-
(
NonLocalGotos = yes,
AsmLabels = no
->
%
% With non-local gotos but no asm labels, jumps to code addresses
% in different c_modules must be done via global variables; the value
% of these global variables is not constant (i.e. not computable at
% load time), since they can't be initialized until we call
% init_modules().
%
IsConst = no
;
IsConst = yes
).
%-----------------------------------------------------------------------------%
%-----------------------------------------------------------------------------%
globals__io_init(Options, Target, GC_Method, TagsMethod, TerminationNorm,
Termination2Norm, TraceLevel, TraceSuppress, MaybeThreadSafe, !IO) :-
copy(Target, Target1),
copy(GC_Method, GC_Method1),
copy(TagsMethod, TagsMethod1),
copy(TerminationNorm, TerminationNorm1),
copy(Termination2Norm, Termination2Norm1),
copy(TraceLevel, TraceLevel1),
copy(TraceSuppress, TraceSuppress1),
copy(MaybeThreadSafe, MaybeThreadSafe1),
globals__init(Options, Target1, GC_Method1, TagsMethod1,
TerminationNorm1, Termination2Norm1, TraceLevel1,
TraceSuppress1, MaybeThreadSafe1, Globals),
globals__io_set_globals(Globals, !IO).
globals__io_get_target(Target, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_target(Globals, Target).
globals__io_get_gc_method(GC_Method, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_gc_method(Globals, GC_Method).
globals__io_get_tags_method(Tags_Method, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_tags_method(Globals, Tags_Method).
globals__io_get_termination_norm(TerminationNorm, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_termination_norm(Globals, TerminationNorm).
globals__io_get_termination2_norm(Termination2Norm, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_termination2_norm(Globals, Termination2Norm).
globals__io_get_trace_level(TraceLevel, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_trace_level(Globals, TraceLevel).
globals__io_get_trace_suppress(TraceSuppress, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_trace_suppress(Globals, TraceSuppress).
globals__io_get_maybe_thread_safe(MaybeThreadSafe, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_maybe_thread_safe(Globals, MaybeThreadSafe).
globals__io_get_extra_error_info(ExtraErrorInfo, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_extra_error_info(Globals, ExtraErrorInfo).
globals__io_get_globals(Globals, !IO) :-
io__get_globals(UnivGlobals, !IO),
( univ_to_type(UnivGlobals, Globals0) ->
Globals = Globals0
;
unexpected(this_file, "io_get_globals: univ_to_type failed")
).
globals__io_set_globals(Globals, !IO) :-
type_to_univ(Globals, UnivGlobals),
io__set_globals(UnivGlobals, !IO).
%-----------------------------------------------------------------------------%
globals__io_lookup_option(Option, OptionData, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_options(Globals, OptionTable),
map__lookup(OptionTable, Option, OptionData).
globals__io_set_option(Option, OptionData, !IO) :-
globals__io_get_globals(Globals0, !IO),
globals__get_options(Globals0, OptionTable0),
map__set(OptionTable0, Option, OptionData, OptionTable),
globals__set_options(OptionTable, Globals0, Globals1),
% XXX there is a bit of a design flaw with regard to
% uniqueness and io__set_globals
unsafe_promise_unique(Globals1, Globals),
globals__io_set_globals(Globals, !IO).
globals__io_set_gc_method(GC_Method, !IO) :-
globals__io_get_globals(Globals0, !IO),
globals__set_gc_method(GC_Method, Globals0, Globals1),
unsafe_promise_unique(Globals1, Globals),
% XXX there is a bit of a design flaw with regard to
% uniqueness and io__set_globals
globals__io_set_globals(Globals, !IO).
globals__io_set_tags_method(Tags_Method, !IO) :-
globals__io_get_globals(Globals0, !IO),
globals__set_tags_method(Tags_Method, Globals0, Globals1),
unsafe_promise_unique(Globals1, Globals),
% XXX there is a bit of a design flaw with regard to
% uniqueness and io__set_globals
globals__io_set_globals(Globals, !IO).
globals__io_set_trace_level(TraceLevel, !IO) :-
globals__io_get_globals(Globals0, !IO),
globals__set_trace_level(TraceLevel, Globals0, Globals1),
unsafe_promise_unique(Globals1, Globals),
% XXX there is a bit of a design flaw with regard to
% uniqueness and io__set_globals
globals__io_set_globals(Globals, !IO).
globals__io_set_extra_error_info(ExtraErrorInfo, !IO) :-
some [!Globals] (
globals__io_get_globals(!:Globals, !IO),
globals__set_extra_error_info(ExtraErrorInfo, !Globals),
unsafe_promise_unique(!Globals),
% XXX there is a bit of a design flaw with regard to
% uniqueness and io__set_globals
globals__io_set_globals(!.Globals, !IO)
).
% This predicate is needed because mercury_compile.m doesn't know
% anything about type trace_level.
globals__io_set_trace_level_none(!IO) :-
globals__io_set_trace_level(trace_level_none, !IO).
%-----------------------------------------------------------------------------%
globals__io_lookup_foreign_language_option(Option, ForeignLang, !IO) :-
globals__io_lookup_string_option(Option, String, !IO),
( convert_foreign_language(String, ForeignLang0) ->
ForeignLang = ForeignLang0
;
unexpected(this_file, "io_lookup_foreign_language_option: "
++ "invalid foreign_language option")
).
globals__io_get_backend_foreign_languages(ForeignLangs, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__get_backend_foreign_languages(Globals, ForeignLangs).
globals__io_lookup_bool_option(Option, Value, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__lookup_bool_option(Globals, Option, Value).
globals__io_lookup_int_option(Option, Value, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__lookup_int_option(Globals, Option, Value).
globals__io_lookup_string_option(Option, Value, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__lookup_string_option(Globals, Option, Value).
globals__io_lookup_maybe_string_option(Option, Value, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__lookup_maybe_string_option(Globals, Option, Value).
globals__io_lookup_accumulating_option(Option, Value, !IO) :-
globals__io_get_globals(Globals, !IO),
globals__lookup_accumulating_option(Globals, Option, Value).
%-----------------------------------------------------------------------------%
globals__io_printing_usage(AlreadyPrinted, !IO) :-
globals__io_get_globals(Globals0, !IO),
AlreadyPrinted = Globals0 ^ have_printed_usage,
Globals1 = Globals0 ^ have_printed_usage := yes,
unsafe_promise_unique(Globals1, Globals),
% XXX there is a bit of a design flaw with regard to
% uniqueness and io__set_globals
globals__io_set_globals(Globals, !IO).
%-----------------------------------------------------------------------------%
:- func this_file = string.
this_file = "globals.m".
%-----------------------------------------------------------------------------%
:- end_module globals.
%-----------------------------------------------------------------------------%