/* * 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 #include #include #include #include #include #include #include #include #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(); // returns standard error codes: 0 for success, 1 for all other errors STATIC int execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) { if (lex == NULL) { return 1; } 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 0; } 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 1; } 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 1; } if (compile_only) { return 0; } // execute it nlr_buf_t nlr; if (nlr_push(&nlr) == 0) { mp_call_function_0(module_fun); nlr_pop(); return 0; } else { // uncaught exception // check for SystemExit mp_obj_t exc = (mp_obj_t)nlr.ret_val; if (mp_obj_is_subclass_fast(mp_obj_get_type(exc), &mp_type_SystemExit)) { exit(mp_obj_get_int(mp_obj_exception_get_value(exc))); } mp_obj_print_exception((mp_obj_t)nlr.ret_val); return 1; } } 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 int do_file(const char *file) { mp_lexer_t *lex = mp_lexer_new_from_file(file); return execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false); } STATIC int do_str(const char *str) { mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, str, strlen(str), false); return execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, false); } int usage(char **argv) { printf( "usage: %s [] [-X ] [-c ] []\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= -- 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()); */ const int NOTHING_EXECUTED = -2; int ret = NOTHING_EXECUTED; for (int a = 1; a < argc; a++) { if (argv[a][0] == '-') { if (strcmp(argv[a], "-c") == 0) { if (a + 1 >= argc) { return usage(argv); } ret = do_str(argv[a + 1]); 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 ret = 2; break; } // 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]))); } ret = do_file(argv[a]); break; } } if (ret == NOTHING_EXECUTED) { do_repl(); ret = 0; } mp_deinit(); //printf("total bytes = %d\n", m_get_total_bytes_allocated()); return ret; } 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]); } nlr_raise(mp_obj_new_exception_arg1(&mp_type_SystemExit, mp_obj_new_int(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); }