mirror of
https://github.com/Mercury-Language/mercury.git
synced 2025-12-15 05:44:58 +00:00
113 lines
4.5 KiB
Mathematica
113 lines
4.5 KiB
Mathematica
%---------------------------------------------------------------------------%
|
|
% vim: ft=mercury ts=4 sw=4 et
|
|
%---------------------------------------------------------------------------%
|
|
% Copyright (C) 2011 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: ml_target_util.m.
|
|
% Author: zs.
|
|
%
|
|
% This module contains utility predicates dealing with target languages.
|
|
%
|
|
%---------------------------------------------------------------------------%
|
|
|
|
:- module ml_backend.ml_target_util.
|
|
:- interface.
|
|
|
|
:- import_module libs.
|
|
:- import_module libs.globals.
|
|
|
|
:- import_module bool.
|
|
|
|
% Return `yes' iff the target language supports the specified construct.
|
|
%
|
|
:- func globals_target_supports_int_switch(globals) = bool.
|
|
:- func globals_target_supports_string_switch(globals) = bool.
|
|
:- func globals_target_supports_goto(globals) = bool.
|
|
:- func globals_target_supports_computed_goto(globals) = bool.
|
|
:- func globals_target_supports_break_and_continue(globals) = bool.
|
|
|
|
:- func target_supports_int_switch(compilation_target) = bool.
|
|
:- func target_supports_string_switch(compilation_target) = bool.
|
|
:- func target_supports_goto(compilation_target) = bool.
|
|
:- func target_supports_computed_goto(compilation_target) = bool.
|
|
:- func target_supports_break_and_continue(compilation_target) = bool.
|
|
|
|
% This should return `yes' iff downcasts are not needed.
|
|
%
|
|
:- func target_supports_inheritence(compilation_target) = bool.
|
|
|
|
%---------------------------------------------------------------------------%
|
|
%---------------------------------------------------------------------------%
|
|
|
|
:- implementation.
|
|
|
|
:- import_module require.
|
|
|
|
globals_target_supports_int_switch(Globals) = SupportsIntSwitch :-
|
|
globals.get_target(Globals, Target),
|
|
SupportsIntSwitch = target_supports_int_switch(Target).
|
|
|
|
globals_target_supports_string_switch(Globals) = SupportsStringSwitch :-
|
|
globals.get_target(Globals, Target),
|
|
SupportsStringSwitch = target_supports_string_switch(Target).
|
|
|
|
globals_target_supports_goto(Globals) = SupportsGoto :-
|
|
globals.get_target(Globals, Target),
|
|
SupportsGoto = target_supports_goto(Target).
|
|
|
|
globals_target_supports_computed_goto(Globals) = SupportsComputedGoto :-
|
|
globals.get_target(Globals, Target),
|
|
SupportsComputedGoto = target_supports_computed_goto(Target).
|
|
|
|
globals_target_supports_break_and_continue(Globals) = SupportsBreakContinue :-
|
|
globals.get_target(Globals, Target),
|
|
SupportsBreakContinue = target_supports_break_and_continue(Target).
|
|
|
|
%---------------------------------------------------------------------------%
|
|
|
|
target_supports_int_switch(target_c) = yes.
|
|
target_supports_int_switch(target_csharp) = yes.
|
|
target_supports_int_switch(target_java) = yes.
|
|
target_supports_int_switch(target_erlang) =
|
|
unexpected($module, $pred, "target erlang").
|
|
|
|
target_supports_string_switch(target_c) = no.
|
|
target_supports_string_switch(target_csharp) = yes.
|
|
target_supports_string_switch(target_java) = yes.
|
|
% String switches were added in Java 7, and we now require 8.
|
|
target_supports_string_switch(target_erlang) =
|
|
unexpected($module, $pred, "target erlang").
|
|
|
|
target_supports_computed_goto(target_c) = yes.
|
|
target_supports_computed_goto(target_csharp) = no.
|
|
target_supports_computed_goto(target_java) = no.
|
|
target_supports_computed_goto(target_erlang) =
|
|
unexpected($module, $pred, "target erlang").
|
|
|
|
target_supports_goto(target_c) = yes.
|
|
% XXX C# *does* support gotos but mlds_to_cs.m currently aborts if it
|
|
% encounters them.
|
|
target_supports_goto(target_csharp) = no.
|
|
target_supports_goto(target_java) = no.
|
|
target_supports_goto(target_erlang) =
|
|
unexpected($module, $pred, "target erlang").
|
|
|
|
target_supports_break_and_continue(target_c) = yes.
|
|
target_supports_break_and_continue(target_csharp) = yes.
|
|
target_supports_break_and_continue(target_java) = yes.
|
|
target_supports_break_and_continue(target_erlang) = _ :-
|
|
unexpected($module, $pred, "target erlang").
|
|
|
|
target_supports_inheritence(target_c) = no.
|
|
target_supports_inheritence(target_csharp) = yes.
|
|
target_supports_inheritence(target_java) = yes.
|
|
target_supports_inheritence(target_erlang) =
|
|
unexpected($module, $pred, "target erlang").
|
|
|
|
%---------------------------------------------------------------------------%
|
|
:- end_module ml_backend.ml_target_util.
|
|
%---------------------------------------------------------------------------%
|