bootstrap projectHEADmaster

Signed-off-by: Johnny Richard <johnny@johnnyrichard.com>

1 files changed, 142 insertions, 0 deletions

diff --git a/src/obe.c b/src/obe.c
new file mode 100644
index 0000000..38af876
--- /dev/null
+++ b/src/obe.c
@@ -0,0 +1,142 @@
+/*
+ * 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;
+}