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https://github.com/Mercury-Language/mercury.git
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295415090e
Estimated hours taken: 6 Branches: main compiler/*.m: Convert almost all remaining modules in the compiler to use "$module, $pred" instead of "this_file" in error messages. In a few cases, the old error message was misleading, since it contained an incorrect, out-of-date or cut-and-pasted predicate name. tests/invalid/unresolved_overloading.err_exp: Update an expected output containing an updated error message.
420 lines
15 KiB
Mathematica
420 lines
15 KiB
Mathematica
%-----------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%-----------------------------------------------------------------------------%
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% Copyright (C) 1993-2011 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: prog_out.m.
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% Main author: fjh.
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%
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% This module defines some predicates which output various parts
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% of the parse tree created by prog_io.
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%
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% WARNING - this module is mostly junk at the moment!
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% Only the first hundred lines or so are meaningful.
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%
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%-----------------------------------------------------------------------------%
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:- module parse_tree.prog_out.
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:- interface.
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:- import_module mdbcomp.prim_data.
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:- import_module parse_tree.prog_data.
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:- import_module io.
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:- import_module list.
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:- import_module maybe.
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% Write out the information in term context (at the moment, just
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% the line number) in a form suitable for the beginning of an
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% error message.
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%
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:- pred write_context(prog_context::in, io::di, io::uo) is det.
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% Write to a string the information in term context (at the moment,
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% just the line number) in a form suitable for the beginning of an
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% error message.
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%
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:- pred context_to_string(prog_context::in, string::out) is det.
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% Write out a symbol name, with special characters escaped,
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% but without any quotes. This is suitable for use in
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% error messages, where the caller should print out an
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% enclosing forward/backward-quote pair (`...').
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%
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:- pred write_sym_name(sym_name::in, io::di, io::uo) is det.
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:- func sym_name_to_escaped_string(sym_name) = string.
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:- pred write_sym_name_and_arity(sym_name_and_arity::in, io::di, io::uo)
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is det.
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% Write out a symbol name, enclosed in single forward quotes ('...'),
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% and with any special characters escaped.
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% The output should be a syntactically valid Mercury term.
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%
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:- pred write_quoted_sym_name(sym_name::in, io::di, io::uo) is det.
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% sym_name_and_arity_to_string(SymName, String):
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%
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% Convert a symbol name and arity to a "<Name>/<Arity>" string,
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% with module qualifiers separated by the standard Mercury module
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% qualifier operator.
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%
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:- func sym_name_and_arity_to_string(sym_name_and_arity) = string.
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:- pred write_simple_call_id(simple_call_id::in, io::di, io::uo) is det.
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:- func simple_call_id_to_string(simple_call_id) = string.
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:- pred write_simple_call_id(pred_or_func::in, sym_name_and_arity::in,
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io::di, io::uo) is det.
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:- func simple_call_id_to_string(pred_or_func, sym_name_and_arity) = string.
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:- pred write_simple_call_id(pred_or_func::in, sym_name::in, arity::in,
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io::di, io::uo) is det.
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:- func simple_call_id_to_string(pred_or_func, sym_name, arity) = string.
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:- pred simple_call_id_to_sym_name_and_arity(simple_call_id::in,
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sym_name_and_arity::out) is det.
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% Write out a module specifier.
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%
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:- pred write_module_spec(module_specifier::in, io::di, io::uo) is det.
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:- func module_spec_to_escaped_string(module_specifier) = string.
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:- pred write_string_list(list(string)::in, io::di, io::uo) is det.
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:- pred write_promise_type(promise_type::in, io::di, io::uo) is det.
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:- func promise_to_string(promise_type) = string.
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:- mode promise_to_string(in) = out is det.
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:- mode promise_to_string(out) = in is semidet.
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:- mode promise_to_string(out) = out is multi.
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:- pred write_type_name(type_ctor::in, io::di, io::uo) is det.
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:- func type_name_to_string(type_ctor) = string.
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:- pred builtin_type_to_string(builtin_type, string).
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:- mode builtin_type_to_string(in, out) is det.
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:- mode builtin_type_to_string(out, in) is semidet.
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% Print "predicate" or "function" depending on the given value.
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%
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:- pred write_pred_or_func(pred_or_func::in, io::di, io::uo) is det.
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% Return "predicate" or "function" depending on the given value.
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%
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:- func pred_or_func_to_full_str(pred_or_func) = string.
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% Return "pred" or "func" depending on the given value.
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%
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:- func pred_or_func_to_str(pred_or_func) = string.
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% Print out a purity name.
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%
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:- pred write_purity(purity::in, io::di, io::uo) is det.
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% Get a purity name as a string.
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%
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:- pred purity_name(purity, string).
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:- mode purity_name(in, out) is det.
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:- mode purity_name(out, in) is semidet.
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% Print out a purity prefix.
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% This works under the assumptions that all purity names but `pure'
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% are operators, and that we never need `pure' indicators/declarations.
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%
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:- pred write_purity_prefix(purity::in, io::di, io::uo) is det.
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:- func purity_prefix_to_string(purity) = string.
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% Convert an eval_method of a pragma to a string giving the name
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% of the pragma.
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%
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:- func eval_method_to_pragma_name(eval_method) = string.
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% Convert an eval_method to a string description.
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%
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:- func eval_method_to_string(eval_method) = string.
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:- pred write_eval_method(eval_method::in, io::di, io::uo) is det.
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:- func maybe_arg_tabling_method_to_string(maybe(arg_tabling_method)) = string.
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:- func arg_tabling_method_to_string(arg_tabling_method) = string.
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:- func determinism_to_string(determinism) = string.
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:- func can_fail_to_string(can_fail) = string.
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%-----------------------------------------------------------------------------%
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%-----------------------------------------------------------------------------%
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:- implementation.
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:- import_module mdbcomp.prim_data.
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:- import_module parse_tree.error_util.
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:- import_module parse_tree.prog_util.
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:- import_module require.
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:- import_module string.
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:- import_module term.
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:- import_module term_io.
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%-----------------------------------------------------------------------------%
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%-----------------------------------------------------------------------------%
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write_context(Context, !IO) :-
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context_to_string(Context, ContextMessage),
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io.write_string(ContextMessage, !IO).
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context_to_string(Context, ContextMessage) :-
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term.context_file(Context, FileName),
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term.context_line(Context, LineNumber),
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( FileName = "" ->
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ContextMessage = ""
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;
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string.format("%s:%03d: ", [s(FileName), i(LineNumber)],
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ContextMessage)
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).
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%-----------------------------------------------------------------------------%
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write_sym_name(qualified(ModuleSpec, Name), !IO) :-
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write_module_spec(ModuleSpec, !IO),
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io.write_string(".", !IO),
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term_io.write_escaped_string(Name, !IO).
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write_sym_name(unqualified(Name), !IO) :-
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term_io.write_escaped_string(Name, !IO).
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sym_name_to_escaped_string(qualified(ModuleSpec, Name)) =
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module_spec_to_escaped_string(ModuleSpec)
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++ "."
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++ term_io.escaped_string(Name).
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sym_name_to_escaped_string(unqualified(Name)) =
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term_io.escaped_string(Name).
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write_sym_name_and_arity(Name / Arity, !IO) :-
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write_sym_name(Name, !IO),
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io.write_string("/", !IO),
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io.write_int(Arity, !IO).
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write_quoted_sym_name(SymName, !IO) :-
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io.write_string("'", !IO),
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write_sym_name(SymName, !IO),
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io.write_string("'", !IO).
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sym_name_and_arity_to_string(SymName/Arity) = String :-
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SymNameString = sym_name_to_string(SymName),
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string.int_to_string(Arity, ArityString),
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string.append_list([SymNameString, "/", ArityString], String).
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write_simple_call_id(simple_call_id(PredOrFunc, Name, Arity), !IO) :-
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Str = simple_call_id_to_string(PredOrFunc, Name, Arity),
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io.write_string(Str, !IO).
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write_simple_call_id(PredOrFunc, Name/Arity, !IO) :-
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Str = simple_call_id_to_string(PredOrFunc, Name, Arity),
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io.write_string(Str, !IO).
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write_simple_call_id(PredOrFunc, SymName, Arity, !IO) :-
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Str = simple_call_id_to_string(PredOrFunc, SymName, Arity),
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io.write_string(Str, !IO).
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simple_call_id_to_string(simple_call_id(PredOrFunc, SymName, Arity)) =
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simple_call_id_to_string(PredOrFunc, SymName, Arity).
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simple_call_id_to_string(PredOrFunc, SymName/Arity) =
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simple_call_id_to_string(PredOrFunc, SymName, Arity).
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simple_call_id_to_string(PredOrFunc, SymName, Arity) = Str :-
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% XXX When printed, promises are differentiated from predicates or
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% functions by module name, so the module names `promise',
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% `promise_exclusive', etc. should be reserved, and their dummy
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% predicates should have more unusual module names.
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Name = unqualify_name(SymName),
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% Is it really a promise?
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( string.prefix(Name, "promise__") ->
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MaybePromise = yes(promise_type_true)
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; string.prefix(Name, "promise_exclusive__") ->
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MaybePromise = yes(promise_type_exclusive)
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; string.prefix(Name, "promise_exhaustive__") ->
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MaybePromise = yes(promise_type_exhaustive)
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; string.prefix(Name, "promise_exclusive_exhaustive__") ->
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MaybePromise = yes(promise_type_exclusive_exhaustive)
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;
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MaybePromise = no % No, it is really a pred or func.
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),
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(
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MaybePromise = yes(PromiseType),
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Pieces = [quote(promise_to_string(PromiseType)), words("declaration")]
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;
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MaybePromise = no,
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SimpleCallId = simple_call_id(PredOrFunc, SymName, Arity),
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simple_call_id_to_sym_name_and_arity(SimpleCallId,
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AdjustedSymNameAndArity),
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Pieces = [p_or_f(PredOrFunc),
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sym_name_and_arity(AdjustedSymNameAndArity)]
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),
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Str = error_pieces_to_string(Pieces).
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simple_call_id_to_sym_name_and_arity(SimpleCallId, SymName / OrigArity) :-
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SimpleCallId = simple_call_id(PredOrFunc, SymName, Arity),
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adjust_func_arity(PredOrFunc, OrigArity, Arity).
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write_module_spec(ModuleSpec, !IO) :-
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write_sym_name(ModuleSpec, !IO).
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module_spec_to_escaped_string(ModuleSpec) =
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sym_name_to_escaped_string(ModuleSpec).
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%-----------------------------------------------------------------------------%
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write_string_list([], !IO).
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write_string_list([Name], !IO) :-
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io.write_string(Name, !IO).
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write_string_list([Name1, Name2 | Names], !IO) :-
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io.write_string(Name1, !IO),
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io.write_string(", ", !IO),
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write_string_list([Name2 | Names], !IO).
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promise_to_string(promise_type_true) = "promise".
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promise_to_string(promise_type_exclusive) = "promise_exclusive".
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promise_to_string(promise_type_exhaustive) = "promise_exhaustive".
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promise_to_string(promise_type_exclusive_exhaustive) =
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"promise_exclusive_exhaustive".
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write_type_name(type_ctor(Name, _Arity), !IO) :-
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prog_out.write_sym_name(Name, !IO).
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type_name_to_string(type_ctor(Name, _Arity)) =
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sym_name_to_escaped_string(Name).
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builtin_type_to_string(builtin_type_int, "int").
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builtin_type_to_string(builtin_type_float, "float").
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builtin_type_to_string(builtin_type_string, "string").
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builtin_type_to_string(builtin_type_char, "character").
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write_promise_type(PromiseType, !IO) :-
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io.write_string(promise_to_string(PromiseType), !IO).
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write_pred_or_func(PorF, !IO) :-
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io.write_string(pred_or_func_to_full_str(PorF), !IO).
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pred_or_func_to_full_str(pf_predicate) = "predicate".
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pred_or_func_to_full_str(pf_function) = "function".
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pred_or_func_to_str(pf_predicate) = "pred".
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pred_or_func_to_str(pf_function) = "func".
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write_purity_prefix(Purity, !IO) :-
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(
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Purity = purity_pure
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;
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( Purity = purity_impure
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; Purity = purity_semipure
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),
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write_purity(Purity, !IO),
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io.write_string(" ", !IO)
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).
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purity_prefix_to_string(Purity) = String :-
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(
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Purity = purity_pure,
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String = ""
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;
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( Purity = purity_impure
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; Purity = purity_semipure
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),
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purity_name(Purity, PurityName),
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String = string.append(PurityName, " ")
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).
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write_purity(Purity, !IO) :-
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purity_name(Purity, String),
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io.write_string(String, !IO).
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purity_name(purity_pure, "pure").
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purity_name(purity_semipure, "semipure").
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purity_name(purity_impure, "impure").
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eval_method_to_pragma_name(eval_normal) = _ :-
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unexpected($module, $pred, "normal").
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eval_method_to_pragma_name(eval_loop_check) = "loop_check".
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eval_method_to_pragma_name(eval_memo) = "memo".
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eval_method_to_pragma_name(eval_minimal(MinimalMethod)) = Str :-
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(
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MinimalMethod = own_stacks_consumer,
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% The fact that this is not the name of the corresponding pragma
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% won't matter until this becomes the default way of doing minimal
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% model tabling, at which time we will return "minimal_model" here
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% and "minimal_model_stack_copy" in the other arm of the switch.
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Str = "minimal_model_own_stacks"
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;
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MinimalMethod = own_stacks_generator,
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Str = "minimal_model_own_stacks_generator"
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;
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MinimalMethod = stack_copy,
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Str = "minimal_model"
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).
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eval_method_to_pragma_name(eval_table_io(_IsDecl, _IsUnitize)) = _ :-
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unexpected($module, $pred, "io").
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eval_method_to_string(eval_normal) = "normal".
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eval_method_to_string(eval_loop_check) = "loop_check".
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eval_method_to_string(eval_memo) = "memo".
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eval_method_to_string(eval_minimal(MinimalMethod)) = Str :-
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(
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MinimalMethod = own_stacks_consumer,
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Str = "minimal_model_own_stacks_consumer"
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;
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MinimalMethod = own_stacks_generator,
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Str = "minimal_model_own_stacks_generator"
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;
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MinimalMethod = stack_copy,
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Str = "minimal_model_stack_copy"
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).
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eval_method_to_string(eval_table_io(IsDecl, IsUnitize)) = Str :-
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(
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IsDecl = table_io_decl,
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DeclStr = "decl, "
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;
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IsDecl = table_io_proc,
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DeclStr = "proc, "
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),
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(
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IsUnitize = table_io_unitize,
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UnitizeStr = "unitize"
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;
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IsUnitize = table_io_alone,
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UnitizeStr = "alone"
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),
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Str = "table_io(" ++ DeclStr ++ UnitizeStr ++ ")".
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write_eval_method(EvalMethod, !IO) :-
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io.write_string(eval_method_to_string(EvalMethod), !IO).
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maybe_arg_tabling_method_to_string(yes(ArgTablingMethod)) =
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arg_tabling_method_to_string(ArgTablingMethod).
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maybe_arg_tabling_method_to_string(no) = "output".
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arg_tabling_method_to_string(arg_value) = "value".
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arg_tabling_method_to_string(arg_addr) = "addr".
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arg_tabling_method_to_string(arg_promise_implied) = "promise_implied".
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determinism_to_string(detism_det) = "det".
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determinism_to_string(detism_semi) = "semidet".
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determinism_to_string(detism_non) = "nondet".
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determinism_to_string(detism_multi) = "multi".
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determinism_to_string(detism_cc_non) = "cc_nondet".
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determinism_to_string(detism_cc_multi) = "cc_multi".
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determinism_to_string(detism_erroneous) = "erroneous".
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determinism_to_string(detism_failure) = "failure".
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can_fail_to_string(can_fail) = "can_fail".
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can_fail_to_string(cannot_fail) = "cannot_fail".
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%-----------------------------------------------------------------------------%
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:- end_module parse_tree.prog_out.
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%-----------------------------------------------------------------------------%
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