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/*
* Copyright (C) 2024 Johnny Richard <johnny@johnnyrichard.com>
*
* SPDX-License-Identifier: LGPL-3.0-or-later
*
* This file is part of obe.
*
* obe is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* obe is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with obe. If not, see <https://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <obe/parser.h>
#include <obe/x86_64/codegen.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct obe_cli_args
{
int argc;
char** argv;
} obe_cli_args_t;
typedef struct obe_cli_opts
{
uint32_t options;
char* ir_file;
char* program_path;
} obe_cli_opts_t;
typedef enum
{
OBE_CLI_OPT_HELP = 1,
OBE_CLI_OPT_VERSION = 1 << 1,
OBE_CLI_OPT_OUTPUT = 1 << 2,
} cli_opt_t;
obe_cli_opts_t
obe_cli_parse_args(int argc, char** argv);
static char*
obe_cli_args_shift(obe_cli_args_t* args)
{
if (args->argc == 0)
return NULL;
--(args->argc);
return *(args->argv)++;
}
void
obe_cli_print_usage(FILE* stream)
{
fprintf(stream,
"Usage: " PACKAGE_NAME " [OPTIONS] file...\n"
"\n"
"Options:\n"
" -h, --help display the help and exit\n"
" -v, --version output version information and exit\n"
" -o, --output output gas assembly\n"
"\n"
"Report bugs to " PACKAGE_BUGREPORT "\n");
}
void
obe_cli_print_version(void)
{
printf(PACKAGE_STRING
"\n"
"\n"
"Copyright (C) 2025 Olang project.\n"
"This is free software; see the source for copying conditions. "
"There is NO\n"
"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR "
"PURPOSE.\n"
"\n"
"Written by Johnny Richard <johnny@johnnyrichard.com>\n");
}
int
main(int argc, char** argv)
{
obe_cli_opts_t opts = { 0 };
obe_cli_args_t args = { .argc = argc, .argv = argv };
opts.program_path = obe_cli_args_shift(&args);
char* arg = obe_cli_args_shift(&args);
while (arg != NULL) {
if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0) {
opts.options |= OBE_CLI_OPT_HELP;
} else if (strcmp(arg, "-v") == 0 || strcmp(arg, "--version") == 0) {
opts.options |= OBE_CLI_OPT_VERSION;
} else if (strcmp(arg, "-o") == 0 || strcmp(arg, "--output") == 0) {
opts.options |= OBE_CLI_OPT_OUTPUT;
} else {
opts.ir_file = arg;
}
arg = obe_cli_args_shift(&args);
}
if (opts.ir_file != NULL) {
obe_arena_t arena = { 0 };
obe_lexer_t lexer = { 0 };
obe_lexer_init(&lexer, opts.ir_file);
obe_parser_t parser = { 0 };
obe_parser_init(&parser, &lexer, &arena);
obe_ir_translation_unit_t* tu = obe_parser_parse(&parser);
obe_x86_64_codegen_emit(tu, stdout);
return EXIT_SUCCESS;
}
if (opts.options & OBE_CLI_OPT_HELP) {
obe_cli_print_usage(stdout);
return EXIT_SUCCESS;
}
if (opts.options & OBE_CLI_OPT_VERSION) {
obe_cli_print_version();
return EXIT_SUCCESS;
}
if (opts.options & OBE_CLI_OPT_OUTPUT) {
return EXIT_SUCCESS;
}
obe_cli_print_usage(stderr);
return EXIT_FAILURE;
}
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