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micropython/unix/main.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <errno.h>
#include "mpconfig.h"
#include "nlr.h"
#include "misc.h"
#include "qstr.h"
#include "lexer.h"
#include "lexerunix.h"
#include "parse.h"
#include "obj.h"
#include "parsehelper.h"
#include "compile.h"
#include "runtime0.h"
#include "runtime.h"
#include "repl.h"
#include "gc.h"
#include "genhdr/py-version.h"
#include "input.h"
// Command line options, with their defaults
bool compile_only = false;
uint emit_opt = MP_EMIT_OPT_NONE;
uint mp_verbose_flag;
#if MICROPY_ENABLE_GC
// Heap size of GC heap (if enabled)
// Make it larger on a 64 bit machine, because pointers are larger.
long heap_size = 128*1024 * (sizeof(machine_uint_t) / 4);
#endif
// Stack top at the start of program
void *stack_top;
void microsocket_init();
void time_init();
void ffi_init();
STATIC void execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) {
if (lex == NULL) {
return;
}
if (0) {
// just tokenise
while (!mp_lexer_is_kind(lex, MP_TOKEN_END)) {
mp_token_show(mp_lexer_cur(lex));
mp_lexer_to_next(lex);
}
mp_lexer_free(lex);
return;
}
mp_parse_error_kind_t parse_error_kind;
mp_parse_node_t pn = mp_parse(lex, input_kind, &parse_error_kind);
if (pn == MP_PARSE_NODE_NULL) {
// parse error
mp_parse_show_exception(lex, parse_error_kind);
mp_lexer_free(lex);
return;
}
qstr source_name = mp_lexer_source_name(lex);
mp_lexer_free(lex);
/*
printf("----------------\n");
mp_parse_node_print(pn, 0);
printf("----------------\n");
*/
mp_obj_t module_fun = mp_compile(pn, source_name, emit_opt, is_repl);
if (module_fun == mp_const_none) {
// compile error
return;
}
if (compile_only) {
return;
}
// execute it
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
mp_call_function_0(module_fun);
nlr_pop();
} else {
// uncaught exception
mp_obj_print_exception((mp_obj_t)nlr.ret_val);
}
}
STATIC char *strjoin(const char *s1, int sep_char, const char *s2) {
int l1 = strlen(s1);
int l2 = strlen(s2);
char *s = malloc(l1 + l2 + 2);
memcpy(s, s1, l1);
if (sep_char != 0) {
s[l1] = sep_char;
l1 += 1;
}
memcpy(s + l1, s2, l2);
s[l1 + l2] = 0;
return s;
}
STATIC void do_repl(void) {
printf("Micro Python " MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE "; UNIX version\n");
for (;;) {
char *line = prompt(">>> ");
if (line == NULL) {
// EOF
return;
}
while (mp_repl_continue_with_input(line)) {
char *line2 = prompt("... ");
if (line2 == NULL) {
break;
}
char *line3 = strjoin(line, '\n', line2);
free(line);
free(line2);
line = line3;
}
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line, strlen(line), false);
execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, true);
free(line);
}
}
STATIC void do_file(const char *file) {
mp_lexer_t *lex = mp_lexer_new_from_file(file);
execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false);
}
STATIC void do_str(const char *str) {
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, str, strlen(str), false);
execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, false);
}
int usage(char **argv) {
printf(
"usage: %s [<opts>] [-X <implopt>] [-c <command>] [<filename>]\n"
"Options:\n"
"-v : verbose (trace various operations); can be multiple\n"
"\n"
"Implementation specific options:\n", argv[0]
);
int impl_opts_cnt = 0;
printf(
" compile-only -- parse and compile only\n"
" emit={bytecode,native,viper} -- set the default code emitter\n"
);
impl_opts_cnt++;
#if MICROPY_ENABLE_GC
printf(
" heapsize=<n> -- set the heap size for the GC\n"
);
impl_opts_cnt++;
#endif
if (impl_opts_cnt == 0) {
printf(" (none)\n");
}
return 1;
}
mp_obj_t mem_info(void) {
printf("mem: total=%d, current=%d, peak=%d\n", m_get_total_bytes_allocated(), m_get_current_bytes_allocated(), m_get_peak_bytes_allocated());
#if MICROPY_ENABLE_GC
gc_dump_info();
#endif
return mp_const_none;
}
mp_obj_t qstr_info(void) {
uint n_pool, n_qstr, n_str_data_bytes, n_total_bytes;
qstr_pool_info(&n_pool, &n_qstr, &n_str_data_bytes, &n_total_bytes);
printf("qstr pool: n_pool=%u, n_qstr=%u, n_str_data_bytes=%u, n_total_bytes=%u\n", n_pool, n_qstr, n_str_data_bytes, n_total_bytes);
return mp_const_none;
}
// Process options which set interpreter init options
void pre_process_options(int argc, char **argv) {
for (int a = 1; a < argc; a++) {
if (argv[a][0] == '-') {
if (strcmp(argv[a], "-X") == 0) {
if (a + 1 >= argc) {
exit(usage(argv));
}
if (0) {
} else if (strcmp(argv[a + 1], "compile-only") == 0) {
compile_only = true;
} else if (strcmp(argv[a + 1], "emit=bytecode") == 0) {
emit_opt = MP_EMIT_OPT_BYTECODE;
} else if (strcmp(argv[a + 1], "emit=native") == 0) {
emit_opt = MP_EMIT_OPT_NATIVE_PYTHON;
} else if (strcmp(argv[a + 1], "emit=viper") == 0) {
emit_opt = MP_EMIT_OPT_VIPER;
#if MICROPY_ENABLE_GC
} else if (strncmp(argv[a + 1], "heapsize=", sizeof("heapsize=") - 1) == 0) {
heap_size = strtol(argv[a + 1] + sizeof("heapsize=") - 1, NULL, 0);
#endif
} else {
exit(usage(argv));
}
a++;
}
}
}
}
int main(int argc, char **argv) {
volatile int stack_dummy;
stack_top = (void*)&stack_dummy;
pre_process_options(argc, argv);
#if MICROPY_ENABLE_GC
char *heap = malloc(heap_size);
gc_init(heap, heap + heap_size);
#endif
qstr_init();
mp_init();
char *home = getenv("HOME");
char *path = getenv("MICROPYPATH");
if (path == NULL) {
path = "~/.micropython/lib:/usr/lib/micropython";
}
uint path_num = 1; // [0] is for current dir (or base dir of the script)
for (char *p = path; p != NULL; p = strchr(p, ':')) {
path_num++;
if (p != NULL) {
p++;
}
}
mp_obj_list_init(mp_sys_path, path_num);
mp_obj_t *path_items;
mp_obj_list_get(mp_sys_path, &path_num, &path_items);
path_items[0] = MP_OBJ_NEW_QSTR(MP_QSTR_);
char *p = path;
for (int i = 1; i < path_num; i++) {
char *p1 = strchr(p, ':');
if (p1 == NULL) {
p1 = p + strlen(p);
}
if (p[0] == '~' && p[1] == '/' && home != NULL) {
// Expand standalone ~ to $HOME
CHECKBUF(buf, PATH_MAX);
CHECKBUF_APPEND(buf, home, strlen(home));
CHECKBUF_APPEND(buf, p + 1, p1 - p - 1);
path_items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(buf, CHECKBUF_LEN(buf)));
} else {
path_items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(p, p1 - p));
}
p = p1 + 1;
}
mp_obj_list_init(mp_sys_argv, 0);
mp_store_name(qstr_from_str("mem_info"), mp_make_function_n(0, mem_info));
mp_store_name(qstr_from_str("qstr_info"), mp_make_function_n(0, qstr_info));
// Here is some example code to create a class and instance of that class.
// First is the Python, then the C code.
//
// class TestClass:
// pass
// test_obj = TestClass()
// test_obj.attr = 42
//
// mp_obj_t test_class_type, test_class_instance;
// test_class_type = mp_obj_new_type(QSTR_FROM_STR_STATIC("TestClass"), mp_const_empty_tuple, mp_obj_new_dict(0));
// mp_store_name(QSTR_FROM_STR_STATIC("test_obj"), test_class_instance = mp_call_function_0(test_class_type));
// mp_store_attr(test_class_instance, QSTR_FROM_STR_STATIC("attr"), mp_obj_new_int(42));
/*
printf("bytes:\n");
printf(" total %d\n", m_get_total_bytes_allocated());
printf(" cur %d\n", m_get_current_bytes_allocated());
printf(" peak %d\n", m_get_peak_bytes_allocated());
*/
bool executed = false;
for (int a = 1; a < argc; a++) {
if (argv[a][0] == '-') {
if (strcmp(argv[a], "-c") == 0) {
if (a + 1 >= argc) {
return usage(argv);
}
do_str(argv[a + 1]);
executed = true;
a += 1;
} else if (strcmp(argv[a], "-X") == 0) {
a += 1;
} else if (strcmp(argv[a], "-v") == 0) {
mp_verbose_flag++;
} else if (strcmp(argv[a], "-O") == 0) {
// optimisation; sets __debug__ to False
mp_set_debug(false);
} else {
return usage(argv);
}
} else {
char *basedir = realpath(argv[a], NULL);
if (basedir == NULL) {
fprintf(stderr, "%s: can't open file '%s': [Errno %d] ", argv[0], argv[1], errno);
perror("");
// CPython exits with 2 in such case
exit(2);
}
// Set base dir of the script as first entry in sys.path
char *p = strrchr(basedir, '/');
path_items[0] = MP_OBJ_NEW_QSTR(qstr_from_strn(basedir, p - basedir));
free(basedir);
for (int i = a; i < argc; i++) {
mp_obj_list_append(mp_sys_argv, MP_OBJ_NEW_QSTR(qstr_from_str(argv[i])));
}
do_file(argv[a]);
executed = true;
break;
}
}
if (!executed) {
do_repl();
}
mp_deinit();
//printf("total bytes = %d\n", m_get_total_bytes_allocated());
return 0;
}
STATIC mp_obj_t mp_sys_exit(uint n_args, const mp_obj_t *args) {
int rc = 0;
if (n_args > 0) {
rc = mp_obj_get_int(args[0]);
}
exit(rc);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_sys_exit_obj, 0, 1, mp_sys_exit);
uint mp_import_stat(const char *path) {
struct stat st;
if (stat(path, &st) == 0) {
if (S_ISDIR(st.st_mode)) {
return MP_IMPORT_STAT_DIR;
} else if (S_ISREG(st.st_mode)) {
return MP_IMPORT_STAT_FILE;
}
}
return MP_IMPORT_STAT_NO_EXIST;
}
int DEBUG_printf(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
int ret = vfprintf(stderr, fmt, ap);
va_end(ap);
return ret;
}
void nlr_jump_fail(void *val) {
printf("FATAL: uncaught NLR %p\n", val);
exit(1);
}
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