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336 lines
11 KiB
Mathematica
336 lines
11 KiB
Mathematica
%----------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%----------------------------------------------------------------------------%
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% Copyright (C) 2013 The University of Melbourne.
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% Copyright (C) 2015-2016, 2023-2025 The Mercury team.
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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: mfilterjavac.m
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% Author: pbone
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%
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% This program processes the output of the Java compiler when compiling Java
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% code generated by the Mercury compiler. It translates the error contexts
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% reported by the Java compiler into the corresponding error contexts in the
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% Mercury source file. This is done by looking for special comments inserted
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% into the generated Java code by the Mercury compiler.
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% (See compiler/mlds_to_java_util.m for details.)
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%
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%-----------------------------------------------------------------------------%
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:- module mfilterjavac.
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:- interface.
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:- import_module io.
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%-----------------------------------------------------------------------------%
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:- pred main(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 char.
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:- import_module int.
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:- import_module list.
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:- import_module map.
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:- import_module maybe.
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:- import_module string.
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%-----------------------------------------------------------------------------%
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main(!IO) :-
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io.input_stream(InStream, !IO),
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io.output_stream(OutStream, !IO),
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filter_lines(InStream, OutStream, Result, map.init, !IO),
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(
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Result = ok
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;
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Result = error(Error),
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io.write_string(io.stderr_stream, "Error: " ++ Error, !IO),
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io.set_exit_status(1, !IO)
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;
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Result = warning(Error),
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io.write_string(io.stderr_stream, "Warning: " ++ Error, !IO)
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% The exit status is unchanged
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).
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:- type filter_result
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---> ok
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; error(string)
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; warning(string).
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:- pred filter_lines(io.text_input_stream::in, io.text_output_stream::in,
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filter_result::out, line_info_cache::in, io::di, io::uo) is det.
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filter_lines(InStream, OutStream, Result, !.Cache, !IO) :-
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io.read_line_as_string(InStream, LineReadResult, !IO),
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(
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LineReadResult = ok(Line0),
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filter_line(LineResult, Line0, Line, !Cache, !IO),
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io.write_string(OutStream, Line, !IO),
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filter_lines(InStream, OutStream, ResultLines, !.Cache, !IO),
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(
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LineResult = ok,
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Result = ResultLines
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;
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LineResult = error(Error),
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(
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( ResultLines = ok
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; ResultLines = warning(_)
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),
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% We use our warning even if later on a warning is
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% generated, ours was first.
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Result = warning(Error)
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;
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ResultLines = error(ErrorLines),
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Result = error(ErrorLines)
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)
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)
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;
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LineReadResult = eof,
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Result = ok
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;
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LineReadResult = error(Error),
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string.format("stdin: %s\n", [s(io.error_message(Error))], ErrorStr),
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Result = error(ErrorStr)
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).
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:- pred filter_line(maybe_error::out, string::in, string::out,
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line_info_cache::in, line_info_cache::out, io::di, io::uo) is det.
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filter_line(Result, !Line, !Cache, !IO) :-
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( if
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PartsA = split_at_separator(char.is_whitespace, !.Line),
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PartsA = [PartAA | OtherPartsA],
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PartsAA = split_at_char(':', PartAA),
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PartsAA = [Filename, LineStr, Empty],
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string.to_int(LineStr, LineNo),
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Empty = ""
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then
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( if map.search(!.Cache, Filename, MaybeLineInfo) then
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(
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MaybeLineInfo = yes(LineInfo),
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translate_and_output_line(LineInfo, Filename, LineNo,
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OtherPartsA, !:Line),
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Result = ok
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;
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MaybeLineInfo = no,
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% We raised this error on a previous iteration where
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% map.search failed.
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Result = ok
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)
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else
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maybe_get_line_info(Filename, MaybeLineInfoErr, !IO),
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(
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MaybeLineInfoErr = ok(LineInfo),
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map.det_insert(Filename, yes(LineInfo), !Cache),
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translate_and_output_line(LineInfo, Filename, LineNo,
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OtherPartsA, !:Line),
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Result = ok
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;
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MaybeLineInfoErr = error(Error),
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map.det_insert(Filename, no, !Cache),
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Result = error(Error)
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)
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)
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else
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Result = ok
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).
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:- pred translate_and_output_line(list(line_info)::in, string::in, int::in,
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list(string)::in, string::out) is det.
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translate_and_output_line(LineInfo, Filename, LineNo, RestParts, OutLine) :-
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line_info_translate(LineInfo, Filename, LineNo, MerFileName, MerLineNo),
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Rest = string.join_list(" ", RestParts),
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string.format("%s:%d: %s\n", [s(MerFileName), i(MerLineNo), s(Rest)],
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OutLine).
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%-----------------------------------------------------------------------------%
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:- type line_info
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---> line_info(
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li_start :: int, % inclusive
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li_end :: int, % not inclusive
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li_delta :: int,
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li_orig_file :: string
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).
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:- type line_info_error
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---> line_info_error(
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li_filename :: string,
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li_lineno :: int,
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li_error :: line_info_error_type
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).
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:- type line_info_error_type
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---> lie_end_without_beginning
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; lie_beginning_without_end
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; lie_duplicate_beginning.
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:- type line_info_cache == map(string, maybe(list(line_info))).
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:- pred line_info_translate(list(line_info)::in, string::in, int::in,
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string::out, int::out) is det.
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line_info_translate([], Name, Line, Name, Line).
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line_info_translate([Info | Infos], Name0, Line0, Name, Line) :-
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Info = line_info(Start, End, Delta, File),
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( if Line0 < Start then
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% No translation.
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Name = Name0,
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Line = Line0
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else if Line0 < End then
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Line = Line0 + Delta,
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Name = File
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else
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line_info_translate(Infos, Name0, Line0, Name, Line)
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).
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:- func error_type_string(line_info_error_type) = string.
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error_type_string(lie_end_without_beginning) =
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"END token without BEGIN token".
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error_type_string(lie_beginning_without_end) =
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"BEGIN token without END token".
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error_type_string(lie_duplicate_beginning) =
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"BEGIN token followed by another BEGIN token".
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%----------------------------------------------------------------------------%
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:- pred maybe_get_line_info(string::in, maybe_error(list(line_info))::out,
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io::di, io::uo) is det.
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maybe_get_line_info(Filename, MaybeInfo, !IO) :-
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io.read_named_file_as_lines_wf(Filename, ReadResult, !IO),
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(
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ReadResult = ok(FileLines),
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read_line_marks(FileLines, 1, [], MaybeRevMarks),
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(
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MaybeRevMarks = ok(RevMarks),
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list.reverse(RevMarks, Marks),
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create_line_info(Filename, Marks, [], MaybeInfo0),
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(
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MaybeInfo0 = ok(Infos),
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MaybeInfo = ok(Infos)
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;
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MaybeInfo0 = error(LineInfoError),
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LineInfoError = line_info_error(ErrFilename, ErrLine, Error),
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string.format(
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"%s:%d: Error understanding line number declaration: %s",
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[s(ErrFilename), i(ErrLine), s(error_type_string(Error))],
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StringError),
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MaybeInfo = error(StringError)
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)
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;
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MaybeRevMarks = error(Msg),
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MaybeInfo = error(format("%s: %s", [s(Filename), s(Msg)]))
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)
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;
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ReadResult = error(_Error),
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% We ignore errors here as our parsing of javac's output could cause
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% false errors.
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MaybeInfo = ok([])
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).
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:- type line_mark
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---> line_mark(
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lm_type :: begin_or_end_block,
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lm_mer_file :: string,
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lm_java_line_no :: int,
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lm_mer_line_no :: int
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).
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:- type begin_or_end_block
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---> begin_block
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; end_block.
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:- pred read_line_marks(list(string)::in, int::in, list(line_mark)::in,
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maybe_error(list(line_mark))::out) is det.
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read_line_marks([], _, RevMarks0, ok(RevMarks0)).
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read_line_marks([Line | Lines], JavaLineNo, RevMarks0, MaybeRevMarks) :-
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% The format string in mlds_to_java_util.m specifically uses spaces
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% rather than any other whitespace.
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Parts = string.split_at_char(' ', strip(Line)),
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( if
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Parts = ["//", Marker, PathLine],
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(
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Marker = "MER_FOREIGN_BEGIN",
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Type = begin_block
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;
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Marker = "MER_FOREIGN_END",
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Type = end_block
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),
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PartsB = string.split_at_char(':', PathLine),
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PartsB = [MerFile, MerLineNoStr],
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string.to_int(MerLineNoStr, MerLineNo)
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then
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Mark = line_mark(Type, MerFile, JavaLineNo, MerLineNo),
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RevMarks = [Mark | RevMarks0]
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else
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RevMarks = RevMarks0
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),
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read_line_marks(Lines, JavaLineNo + 1, RevMarks, MaybeRevMarks).
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:- pred create_line_info(string::in, list(line_mark)::in, list(line_info)::in,
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maybe_error(list(line_info), line_info_error)::out) is det.
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create_line_info(_JavaFile, [], RevInfos, ok(Infos)) :-
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list.reverse(RevInfos, Infos).
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create_line_info(JavaFile, [Mark | Marks0], RevInfos0, MaybeInfos) :-
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Mark = line_mark(Type, MerFile, JavaLineNo, MerLineNo),
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(
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Type = begin_block,
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create_line_info_in_block(InfoEnd, Marks0, Marks),
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(
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InfoEnd = line_info_end(End),
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Delta = MerLineNo - JavaLineNo,
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Info = line_info(JavaLineNo, End, Delta, MerFile),
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RevInfos = [Info | RevInfos0],
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create_line_info(JavaFile, Marks, RevInfos, MaybeInfos)
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;
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InfoEnd = line_info_no_end,
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Error = line_info_error(JavaFile, JavaLineNo,
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lie_beginning_without_end),
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MaybeInfos = error(Error)
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;
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InfoEnd = line_info_duplicate_begin(SecondBeginLine),
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Error = line_info_error(JavaFile, SecondBeginLine,
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lie_duplicate_beginning),
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MaybeInfos = error(Error)
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)
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;
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Type = end_block,
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Error = line_info_error(JavaFile, JavaLineNo,
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lie_end_without_beginning),
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MaybeInfos = error(Error)
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).
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:- type line_info_end
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---> line_info_end(int)
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; line_info_no_end
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; line_info_duplicate_begin(int).
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:- pred create_line_info_in_block(line_info_end::out,
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list(line_mark)::in, list(line_mark)::out) is det.
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create_line_info_in_block(line_info_no_end, [], []).
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create_line_info_in_block(Info, [Mark | Marks], Marks) :-
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Mark = line_mark(Type, _, End, _),
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(
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Type = begin_block,
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Info = line_info_duplicate_begin(End)
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;
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Type = end_block,
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Info = line_info_end(End)
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).
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%-----------------------------------------------------------------------------%
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:- end_module mfilterjavac.
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%-----------------------------------------------------------------------------%
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