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| | /*
* Copyright (C) 2024 olang maintainers
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "arena.h"
#include "cli.h"
#include "codegen_linux_x86_64.h"
#include "lexer.h"
#include "parser.h"
#include "string_view.h"
// TODO: find a better solution to define the arena capacity
#define ARENA_CAPACITY (1024 * 1024)
void
handle_dump_tokens(cli_opts_t *opts);
void
handle_codegen_linux_x86_64(cli_opts_t *opts);
static void
print_token(char *file_path, token_t *token);
string_view_t
read_entire_file(char *file_path, arena_t *arena);
int
main(int argc, char **argv)
{
cli_opts_t opts = cli_parse_args(argc, argv);
if (opts.options & CLI_OPT_DUMP_TOKENS) {
handle_dump_tokens(&opts);
return EXIT_SUCCESS;
}
if (opts.options & CLI_OPT_OUTPUT) {
handle_codegen_linux_x86_64(&opts);
return EXIT_SUCCESS;
}
if (opts.options & CLI_OPT_DUMP_TOKENS) {
handle_dump_tokens(&opts);
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
void
handle_dump_tokens(cli_opts_t *opts)
{
if (opts->file_path == NULL) {
cli_print_usage(stderr, opts->compiler_path);
exit(EXIT_FAILURE);
}
arena_t arena = arena_new(ARENA_CAPACITY);
string_view_t file_content = read_entire_file(opts->file_path, &arena);
lexer_t lexer = { 0 };
lexer_init(&lexer, file_content);
token_t token = { 0 };
lexer_next_token(&lexer, &token);
while (token.kind != TOKEN_EOF) {
print_token(opts->file_path, &token);
lexer_next_token(&lexer, &token);
}
print_token(opts->file_path, &token);
arena_free(&arena);
}
void
handle_codegen_linux_x86_64(cli_opts_t *opts)
{
if (opts->file_path == NULL) {
cli_print_usage(stderr, opts->compiler_path);
exit(EXIT_FAILURE);
}
arena_t arena = arena_new(ARENA_CAPACITY);
lexer_t lexer = { 0 };
parser_t parser = { 0 };
string_view_t file_content = read_entire_file(opts->file_path, &arena);
lexer_init(&lexer, file_content);
parser_init(&parser, &lexer, &arena, opts->file_path);
ast_node_t *ast = parser_parse_program(&parser);
char asm_file[opts->output_bin.size + 3];
sprintf(asm_file, "" SV_FMT ".s", SV_ARG(opts->output_bin));
FILE *out = fopen(asm_file, "w");
assert(out);
codegen_linux_x86_64_emit_program(out, ast);
fclose(out);
char command[512];
sprintf(command, "as %s -o " SV_FMT ".o", asm_file, SV_ARG(opts->output_bin));
system(command);
sprintf(command, "ld " SV_FMT ".o -o " SV_FMT "", SV_ARG(opts->output_bin), SV_ARG(opts->output_bin));
system(command);
if (!(opts->options & CLI_OPT_SAVE_TEMPS)) {
char output_file[256];
sprintf(output_file, "" SV_FMT ".s", SV_ARG(opts->output_bin));
remove(output_file);
sprintf(output_file, "" SV_FMT ".o", SV_ARG(opts->output_bin));
remove(output_file);
}
arena_free(&arena);
}
string_view_t
read_entire_file(char *file_path, arena_t *arena)
{
FILE *stream = fopen(file_path, "rb");
if (stream == NULL) {
fprintf(stderr, "error: could not open file %s: %s\n", file_path, strerror(errno));
exit(EXIT_FAILURE);
}
string_view_t file_content = { 0 };
fseek(stream, 0, SEEK_END);
file_content.size = ftell(stream);
fseek(stream, 0, SEEK_SET);
assert(file_content.size * 2 < ARENA_CAPACITY);
file_content.chars = (char *)arena_alloc(arena, (size_t)file_content.size);
if (file_content.chars == NULL) {
fprintf(stderr, "error: could not read file %s: %s\n", file_path, strerror(errno));
exit(EXIT_FAILURE);
}
fread(file_content.chars, 1, file_content.size, stream);
fclose(stream);
return file_content;
}
static void
print_token(char *file_path, token_t *token)
{
printf("%s:%lu:%lu: <%s>\n",
file_path,
token->location.row + 1,
(token->location.offset - token->location.bol) + 1,
token_kind_to_cstr(token->kind));
}
|