534 lines
17 KiB
C
534 lines
17 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <ctype.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include "mpconfig.h"
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#include "nlr.h"
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#include "misc.h"
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#include "qstr.h"
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#include "lexer.h"
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#include "lexerunix.h"
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#include "parse.h"
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#include "obj.h"
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#include "parsehelper.h"
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#include "compile.h"
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#include "runtime0.h"
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#include "runtime.h"
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#include "builtin.h"
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#include "repl.h"
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#include "gc.h"
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#include "genhdr/py-version.h"
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#include "input.h"
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#include "stackctrl.h"
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#include "pfenv.h"
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// Command line options, with their defaults
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STATIC bool compile_only = false;
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STATIC uint emit_opt = MP_EMIT_OPT_NONE;
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mp_uint_t mp_verbose_flag = 0;
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#if MICROPY_ENABLE_GC
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// Heap size of GC heap (if enabled)
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// Make it larger on a 64 bit machine, because pointers are larger.
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long heap_size = 128*1024 * (sizeof(mp_uint_t) / 4);
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#endif
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#ifndef _WIN32
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#include <signal.h>
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STATIC mp_obj_t keyboard_interrupt_obj;
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STATIC void sighandler(int signum) {
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if (signum == SIGINT) {
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mp_obj_exception_clear_traceback(keyboard_interrupt_obj);
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mp_pending_exception = keyboard_interrupt_obj;
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// disable our handler so next we really die
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struct sigaction sa;
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sa.sa_handler = SIG_DFL;
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sigemptyset(&sa.sa_mask);
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sigaction(SIGINT, &sa, NULL);
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}
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}
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#endif
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#define FORCED_EXIT (0x100)
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// If exc is SystemExit, return value where FORCED_EXIT bit set,
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// and lower 8 bits are SystemExit value. For all other exceptions,
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// return 1.
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STATIC int handle_uncaught_exception(mp_obj_t exc) {
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// check for SystemExit
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if (mp_obj_is_subclass_fast(mp_obj_get_type(exc), &mp_type_SystemExit)) {
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// None is an exit value of 0; an int is its value; anything else is 1
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mp_obj_t exit_val = mp_obj_exception_get_value(exc);
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mp_int_t val = 0;
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if (exit_val != mp_const_none && !mp_obj_get_int_maybe(exit_val, &val)) {
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val = 1;
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}
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return FORCED_EXIT | (val & 255);
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}
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// Report all other exceptions
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mp_obj_print_exception(printf_wrapper, NULL, exc);
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return 1;
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}
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// Returns standard error codes: 0 for success, 1 for all other errors,
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// except if FORCED_EXIT bit is set then script raised SystemExit and the
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// value of the exit is in the lower 8 bits of the return value
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STATIC int execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) {
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if (lex == NULL) {
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return 1;
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}
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if (0) {
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// just tokenise
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while (lex->tok_kind != MP_TOKEN_END) {
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mp_lexer_show_token(lex);
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mp_lexer_to_next(lex);
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}
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mp_lexer_free(lex);
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return 0;
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}
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mp_parse_error_kind_t parse_error_kind;
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mp_parse_node_t pn = mp_parse(lex, input_kind, &parse_error_kind);
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if (pn == MP_PARSE_NODE_NULL) {
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// parse error
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mp_parse_show_exception(lex, parse_error_kind);
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mp_lexer_free(lex);
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return 1;
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}
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qstr source_name = lex->source_name;
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#if MICROPY_PY___FILE__
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if (input_kind == MP_PARSE_FILE_INPUT) {
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mp_store_global(MP_QSTR___file__, MP_OBJ_NEW_QSTR(source_name));
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}
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#endif
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mp_lexer_free(lex);
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/*
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printf("----------------\n");
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mp_parse_node_print(pn, 0);
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printf("----------------\n");
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*/
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mp_obj_t module_fun = mp_compile(pn, source_name, emit_opt, is_repl);
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if (mp_obj_is_exception_instance(module_fun)) {
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// compile error
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mp_obj_print_exception(printf_wrapper, NULL, module_fun);
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return 1;
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}
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if (compile_only) {
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return 0;
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}
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#ifndef _WIN32
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// enable signal handler
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struct sigaction sa;
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sa.sa_handler = sighandler;
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sigemptyset(&sa.sa_mask);
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sigaction(SIGINT, &sa, NULL);
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sa.sa_handler = SIG_DFL;
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#endif
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// execute it
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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mp_call_function_0(module_fun);
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#ifndef _WIN32
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sigaction(SIGINT, &sa, NULL);
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#endif
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nlr_pop();
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return 0;
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} else {
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// uncaught exception
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#ifndef _WIN32
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sigaction(SIGINT, &sa, NULL);
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#endif
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return handle_uncaught_exception((mp_obj_t)nlr.ret_val);
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}
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}
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STATIC char *strjoin(const char *s1, int sep_char, const char *s2) {
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int l1 = strlen(s1);
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int l2 = strlen(s2);
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char *s = malloc(l1 + l2 + 2);
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memcpy(s, s1, l1);
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if (sep_char != 0) {
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s[l1] = sep_char;
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l1 += 1;
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}
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memcpy(s + l1, s2, l2);
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s[l1 + l2] = 0;
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return s;
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}
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STATIC int do_repl(void) {
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printf("Micro Python " MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE "; " MICROPY_PY_SYS_PLATFORM " version\n");
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for (;;) {
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char *line = prompt(">>> ");
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if (line == NULL) {
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// EOF
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return 0;
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}
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while (mp_repl_continue_with_input(line)) {
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char *line2 = prompt("... ");
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if (line2 == NULL) {
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break;
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}
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char *line3 = strjoin(line, '\n', line2);
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free(line);
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free(line2);
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line = line3;
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}
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line, strlen(line), false);
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int ret = execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, true);
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if (ret & FORCED_EXIT) {
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return ret;
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}
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free(line);
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}
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}
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STATIC int do_file(const char *file) {
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mp_lexer_t *lex = mp_lexer_new_from_file(file);
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return execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false);
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}
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STATIC int do_str(const char *str) {
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, str, strlen(str), false);
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return execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false);
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}
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STATIC int usage(char **argv) {
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printf(
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"usage: %s [<opts>] [-X <implopt>] [-c <command>] [<filename>]\n"
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"Options:\n"
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"-v : verbose (trace various operations); can be multiple\n"
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"-O[N] : apply bytecode optimizations of level N\n"
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"\n"
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"Implementation specific options:\n", argv[0]
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);
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int impl_opts_cnt = 0;
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printf(
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" compile-only -- parse and compile only\n"
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" emit={bytecode,native,viper} -- set the default code emitter\n"
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);
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impl_opts_cnt++;
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#if MICROPY_ENABLE_GC
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printf(
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" heapsize=<n> -- set the heap size for the GC (default %ld)\n"
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, heap_size);
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impl_opts_cnt++;
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#endif
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if (impl_opts_cnt == 0) {
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printf(" (none)\n");
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}
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return 1;
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}
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// Process options which set interpreter init options
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STATIC void pre_process_options(int argc, char **argv) {
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for (int a = 1; a < argc; a++) {
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if (argv[a][0] == '-') {
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if (strcmp(argv[a], "-X") == 0) {
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if (a + 1 >= argc) {
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exit(usage(argv));
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}
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if (0) {
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} else if (strcmp(argv[a + 1], "compile-only") == 0) {
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compile_only = true;
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} else if (strcmp(argv[a + 1], "emit=bytecode") == 0) {
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emit_opt = MP_EMIT_OPT_BYTECODE;
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} else if (strcmp(argv[a + 1], "emit=native") == 0) {
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emit_opt = MP_EMIT_OPT_NATIVE_PYTHON;
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} else if (strcmp(argv[a + 1], "emit=viper") == 0) {
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emit_opt = MP_EMIT_OPT_VIPER;
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#if MICROPY_ENABLE_GC
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} else if (strncmp(argv[a + 1], "heapsize=", sizeof("heapsize=") - 1) == 0) {
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char *end;
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heap_size = strtol(argv[a + 1] + sizeof("heapsize=") - 1, &end, 0);
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// Don't bring unneeded libc dependencies like tolower()
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// If there's 'w' immediately after number, adjust it for
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// target word size. Note that it should be *before* size
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// suffix like K or M, to avoid confusion with kilowords,
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// etc. the size is still in bytes, just can be adjusted
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// for word size (taking 32bit as baseline).
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bool word_adjust = false;
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if ((*end | 0x20) == 'w') {
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word_adjust = true;
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end++;
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}
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if ((*end | 0x20) == 'k') {
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heap_size *= 1024;
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} else if ((*end | 0x20) == 'm') {
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heap_size *= 1024 * 1024;
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}
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if (word_adjust) {
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heap_size = heap_size * BYTES_PER_WORD / 4;
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}
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#endif
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} else {
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exit(usage(argv));
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}
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a++;
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}
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}
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}
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}
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STATIC void set_sys_argv(char *argv[], int argc, int start_arg) {
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for (int i = start_arg; i < argc; i++) {
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mp_obj_list_append(mp_sys_argv, MP_OBJ_NEW_QSTR(qstr_from_str(argv[i])));
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}
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}
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#ifdef _WIN32
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#define PATHLIST_SEP_CHAR ';'
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#else
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#define PATHLIST_SEP_CHAR ':'
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#endif
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int main(int argc, char **argv) {
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mp_stack_set_limit(32768);
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pre_process_options(argc, argv);
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#if MICROPY_ENABLE_GC
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char *heap = malloc(heap_size);
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gc_init(heap, heap + heap_size);
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#endif
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mp_init();
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#ifndef _WIN32
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// create keyboard interrupt object
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keyboard_interrupt_obj = mp_obj_new_exception(&mp_type_KeyboardInterrupt);
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#endif
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char *home = getenv("HOME");
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char *path = getenv("MICROPYPATH");
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if (path == NULL) {
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path = "~/.micropython/lib:/usr/lib/micropython";
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}
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mp_uint_t path_num = 1; // [0] is for current dir (or base dir of the script)
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for (char *p = path; p != NULL; p = strchr(p, PATHLIST_SEP_CHAR)) {
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path_num++;
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if (p != NULL) {
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p++;
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}
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}
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mp_obj_list_init(mp_sys_path, path_num);
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mp_obj_t *path_items;
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mp_obj_list_get(mp_sys_path, &path_num, &path_items);
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path_items[0] = MP_OBJ_NEW_QSTR(MP_QSTR_);
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char *p = path;
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for (int i = 1; i < path_num; i++) {
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char *p1 = strchr(p, PATHLIST_SEP_CHAR);
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if (p1 == NULL) {
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p1 = p + strlen(p);
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}
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if (p[0] == '~' && p[1] == '/' && home != NULL) {
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// Expand standalone ~ to $HOME
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CHECKBUF(buf, PATH_MAX);
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CHECKBUF_APPEND(buf, home, strlen(home));
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CHECKBUF_APPEND(buf, p + 1, p1 - p - 1);
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path_items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(buf, CHECKBUF_LEN(buf)));
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} else {
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path_items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(p, p1 - p));
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}
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p = p1 + 1;
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}
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mp_obj_list_init(mp_sys_argv, 0);
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// Here is some example code to create a class and instance of that class.
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// First is the Python, then the C code.
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//
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// class TestClass:
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// pass
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// test_obj = TestClass()
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// test_obj.attr = 42
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//
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// mp_obj_t test_class_type, test_class_instance;
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// test_class_type = mp_obj_new_type(QSTR_FROM_STR_STATIC("TestClass"), mp_const_empty_tuple, mp_obj_new_dict(0));
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// mp_store_name(QSTR_FROM_STR_STATIC("test_obj"), test_class_instance = mp_call_function_0(test_class_type));
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// mp_store_attr(test_class_instance, QSTR_FROM_STR_STATIC("attr"), mp_obj_new_int(42));
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/*
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printf("bytes:\n");
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printf(" total %d\n", m_get_total_bytes_allocated());
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printf(" cur %d\n", m_get_current_bytes_allocated());
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printf(" peak %d\n", m_get_peak_bytes_allocated());
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*/
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const int NOTHING_EXECUTED = -2;
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int ret = NOTHING_EXECUTED;
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for (int a = 1; a < argc; a++) {
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if (argv[a][0] == '-') {
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if (strcmp(argv[a], "-c") == 0) {
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if (a + 1 >= argc) {
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return usage(argv);
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}
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ret = do_str(argv[a + 1]);
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if (ret & FORCED_EXIT) {
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break;
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}
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a += 1;
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} else if (strcmp(argv[a], "-m") == 0) {
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if (a + 1 >= argc) {
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return usage(argv);
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}
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mp_obj_t import_args[4];
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import_args[0] = mp_obj_new_str(argv[a + 1], strlen(argv[a + 1]), false);
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import_args[1] = import_args[2] = mp_const_none;
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// Ask __import__ to handle imported module specially - set its __name__
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// to __main__, and also return this leaf module, not top-level package
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// containing it.
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import_args[3] = mp_const_false;
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// TODO: https://docs.python.org/3/using/cmdline.html#cmdoption-m :
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// "the first element of sys.argv will be the full path to
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// the module file (while the module file is being located,
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// the first element will be set to "-m")."
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set_sys_argv(argv, argc, a + 1);
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mp_obj_t mod;
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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mod = mp_builtin___import__(MP_ARRAY_SIZE(import_args), import_args);
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nlr_pop();
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} else {
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// uncaught exception
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return handle_uncaught_exception((mp_obj_t)nlr.ret_val) & 0xff;
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}
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if (mp_obj_is_package(mod)) {
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// TODO
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fprintf(stderr, "%s: -m for packages not yet implemented\n", argv[0]);
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exit(1);
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}
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ret = 0;
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break;
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} else if (strcmp(argv[a], "-X") == 0) {
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a += 1;
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} else if (strcmp(argv[a], "-v") == 0) {
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mp_verbose_flag++;
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} else if (strncmp(argv[a], "-O", 2) == 0) {
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if (isdigit(argv[a][2])) {
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mp_optimise_value = argv[a][2] & 0xf;
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} else {
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mp_optimise_value = 0;
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for (char *p = argv[a] + 1; *p && *p == 'O'; p++, mp_optimise_value++);
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}
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} else {
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return usage(argv);
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}
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} else {
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char *pathbuf = malloc(PATH_MAX);
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char *basedir = realpath(argv[a], pathbuf);
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if (basedir == NULL) {
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fprintf(stderr, "%s: can't open file '%s': [Errno %d] ", argv[0], argv[a], errno);
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perror("");
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// CPython exits with 2 in such case
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ret = 2;
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break;
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}
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// Set base dir of the script as first entry in sys.path
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char *p = strrchr(basedir, '/');
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path_items[0] = MP_OBJ_NEW_QSTR(qstr_from_strn(basedir, p - basedir));
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free(pathbuf);
|
|
|
|
set_sys_argv(argv, argc, a);
|
|
ret = do_file(argv[a]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ret == NOTHING_EXECUTED) {
|
|
ret = do_repl();
|
|
}
|
|
|
|
if (mp_verbose_flag) {
|
|
extern mp_obj_t mp_micropython_mem_info(mp_uint_t n_args, const mp_obj_t *args);
|
|
mp_micropython_mem_info(0, NULL);
|
|
}
|
|
|
|
mp_deinit();
|
|
|
|
#if MICROPY_ENABLE_GC && !defined(NDEBUG)
|
|
// We don't really need to free memory since we are about to exit the
|
|
// process, but doing so helps to find memory leaks.
|
|
free(heap);
|
|
#endif
|
|
|
|
//printf("total bytes = %d\n", m_get_total_bytes_allocated());
|
|
return ret & 0xff;
|
|
}
|
|
|
|
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);
|
|
}
|