312 lines
10 KiB
C
312 lines
10 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 <stdlib.h>
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#include <stdio.h>
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#include <stdint.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 "misc.h"
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#include "lexer.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 "runtime.h"
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#include "repl.h"
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#include "gc.h"
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#include "gccollect.h"
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#include MICROPY_HAL_H
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#include "systick.h"
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#include "readline.h"
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#include "pyexec.h"
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#include "pybstdio.h"
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#include "genhdr/py-version.h"
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pyexec_mode_kind_t pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
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STATIC bool repl_display_debugging_info = 0;
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#define EXEC_FLAG_PRINT_EOF (1)
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#define EXEC_FLAG_ALLOW_DEBUGGING (2)
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#define EXEC_FLAG_IS_REPL (4)
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// parses, compiles and executes the code in the lexer
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// frees the lexer before returning
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// EXEC_FLAG_PRINT_EOF prints 2 EOF chars: 1 after normal output, 1 after exception output
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// EXEC_FLAG_ALLOW_DEBUGGING allows debugging info to be printed after executing the code
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// EXEC_FLAG_IS_REPL is used for REPL inputs (flag passed on to mp_compile)
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STATIC int parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, int exec_flags) {
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int ret = 0;
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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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qstr source_name = mp_lexer_source_name(lex);
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// check for parse error
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if (pn == MP_PARSE_NODE_NULL) {
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if (exec_flags & EXEC_FLAG_PRINT_EOF) {
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stdout_tx_strn("\x04", 1);
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}
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mp_parse_show_exception(lex, parse_error_kind);
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mp_lexer_free(lex);
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goto finish;
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}
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mp_lexer_free(lex);
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mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, exec_flags & EXEC_FLAG_IS_REPL);
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// check for compile error
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if (mp_obj_is_exception_instance(module_fun)) {
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if (exec_flags & EXEC_FLAG_PRINT_EOF) {
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stdout_tx_strn("\x04", 1);
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}
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mp_obj_print_exception(module_fun);
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goto finish;
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}
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// execute code
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nlr_buf_t nlr;
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uint32_t start = HAL_GetTick();
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if (nlr_push(&nlr) == 0) {
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mp_hal_set_interrupt_char(CHAR_CTRL_C); // allow ctrl-C to interrupt us
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mp_call_function_0(module_fun);
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mp_hal_set_interrupt_char(-1); // disable interrupt
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nlr_pop();
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ret = 1;
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if (exec_flags & EXEC_FLAG_PRINT_EOF) {
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stdout_tx_strn("\x04", 1);
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}
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} else {
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// uncaught exception
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// FIXME it could be that an interrupt happens just before we disable it here
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mp_hal_set_interrupt_char(-1); // disable interrupt
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// print EOF after normal output
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if (exec_flags & EXEC_FLAG_PRINT_EOF) {
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stdout_tx_strn("\x04", 1);
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}
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// check for SystemExit
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if (mp_obj_is_subclass_fast(mp_obj_get_type((mp_obj_t)nlr.ret_val), &mp_type_SystemExit)) {
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// at the moment, the value of SystemExit is unused
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ret = PYEXEC_FORCED_EXIT;
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} else {
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mp_obj_print_exception((mp_obj_t)nlr.ret_val);
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ret = 0;
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}
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}
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// display debugging info if wanted
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if ((exec_flags & EXEC_FLAG_ALLOW_DEBUGGING) && repl_display_debugging_info) {
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mp_uint_t ticks = HAL_GetTick() - start; // TODO implement a function that does this properly
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printf("took " UINT_FMT " ms\n", ticks);
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gc_collect();
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// qstr info
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{
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mp_uint_t n_pool, n_qstr, n_str_data_bytes, n_total_bytes;
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qstr_pool_info(&n_pool, &n_qstr, &n_str_data_bytes, &n_total_bytes);
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printf("qstr:\n n_pool=" UINT_FMT "\n n_qstr=" UINT_FMT "\n n_str_data_bytes=" UINT_FMT "\n n_total_bytes=" UINT_FMT "\n", n_pool, n_qstr, n_str_data_bytes, n_total_bytes);
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}
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// GC info
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{
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gc_info_t info;
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gc_info(&info);
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printf("GC:\n");
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printf(" " UINT_FMT " total\n", info.total);
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printf(" " UINT_FMT " : " UINT_FMT "\n", info.used, info.free);
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printf(" 1=" UINT_FMT " 2=" UINT_FMT " m=" UINT_FMT "\n", info.num_1block, info.num_2block, info.max_block);
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}
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}
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finish:
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if (exec_flags & EXEC_FLAG_PRINT_EOF) {
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stdout_tx_strn("\x04", 1);
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}
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return ret;
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}
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int pyexec_raw_repl(void) {
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vstr_t line;
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vstr_init(&line, 32);
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raw_repl_reset:
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stdout_tx_str("raw REPL; CTRL-B to exit\r\n");
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for (;;) {
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vstr_reset(&line);
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stdout_tx_str(">");
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for (;;) {
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char c = stdin_rx_chr();
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if (c == CHAR_CTRL_A) {
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// reset raw REPL
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goto raw_repl_reset;
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} else if (c == CHAR_CTRL_B) {
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// change to friendly REPL
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stdout_tx_str("\r\n");
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vstr_clear(&line);
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pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
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return 0;
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} else if (c == CHAR_CTRL_C) {
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// clear line
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vstr_reset(&line);
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} else if (c == CHAR_CTRL_D) {
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// input finished
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break;
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} else if (c <= 127) {
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// let through any other ASCII character
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vstr_add_char(&line, c);
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}
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}
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// indicate reception of command
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stdout_tx_str("OK");
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if (line.len == 0) {
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// exit for a soft reset
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stdout_tx_str("\r\n");
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vstr_clear(&line);
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return PYEXEC_FORCED_EXIT;
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}
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, line.buf, line.len, 0);
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if (lex == NULL) {
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printf("\x04MemoryError\n\x04");
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} else {
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int ret = parse_compile_execute(lex, MP_PARSE_FILE_INPUT, EXEC_FLAG_PRINT_EOF);
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if (ret & PYEXEC_FORCED_EXIT) {
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return ret;
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}
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}
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}
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}
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int pyexec_friendly_repl(void) {
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vstr_t line;
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vstr_init(&line, 32);
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#if defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD
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// in host mode, we enable the LCD for the repl
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mp_obj_t lcd_o = mp_call_function_0(mp_load_name(qstr_from_str("LCD")));
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mp_call_function_1(mp_load_attr(lcd_o, qstr_from_str("light")), mp_const_true);
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#endif
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friendly_repl_reset:
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stdout_tx_str("Micro Python " MICROPY_GIT_TAG " on " MICROPY_BUILD_DATE "; " MICROPY_HW_BOARD_NAME " with " MICROPY_HW_MCU_NAME "\r\n");
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stdout_tx_str("Type \"help()\" for more information.\r\n");
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// to test ctrl-C
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/*
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{
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uint32_t x[4] = {0x424242, 0xdeaddead, 0x242424, 0xdeadbeef};
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for (;;) {
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nlr_buf_t nlr;
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printf("pyexec_repl: %p\n", x);
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mp_hal_set_interrupt_char(CHAR_CTRL_C);
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if (nlr_push(&nlr) == 0) {
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for (;;) {
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}
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} else {
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printf("break\n");
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}
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}
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}
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*/
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for (;;) {
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input_restart:
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vstr_reset(&line);
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int ret = readline(&line, ">>> ");
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if (ret == CHAR_CTRL_A) {
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// change to raw REPL
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stdout_tx_str("\r\n");
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vstr_clear(&line);
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pyexec_mode_kind = PYEXEC_MODE_RAW_REPL;
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return 0;
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} else if (ret == CHAR_CTRL_B) {
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// reset friendly REPL
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stdout_tx_str("\r\n");
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goto friendly_repl_reset;
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} else if (ret == CHAR_CTRL_C) {
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// break
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stdout_tx_str("\r\n");
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continue;
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} else if (ret == CHAR_CTRL_D) {
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// exit for a soft reset
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stdout_tx_str("\r\n");
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vstr_clear(&line);
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return PYEXEC_FORCED_EXIT;
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} else if (vstr_len(&line) == 0) {
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continue;
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}
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while (mp_repl_continue_with_input(vstr_str(&line))) {
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vstr_add_char(&line, '\n');
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int ret = readline(&line, "... ");
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if (ret == CHAR_CTRL_C) {
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// cancel everything
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stdout_tx_str("\r\n");
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goto input_restart;
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} else if (ret == CHAR_CTRL_D) {
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// stop entering compound statement
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break;
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}
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}
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mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr_str(&line), vstr_len(&line), 0);
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if (lex == NULL) {
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printf("MemoryError\n");
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} else {
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int ret = parse_compile_execute(lex, MP_PARSE_SINGLE_INPUT, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL);
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if (ret & PYEXEC_FORCED_EXIT) {
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return ret;
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}
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}
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}
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}
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int pyexec_file(const char *filename) {
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mp_lexer_t *lex = mp_lexer_new_from_file(filename);
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if (lex == NULL) {
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printf("could not open file '%s' for reading\n", filename);
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return false;
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}
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return parse_compile_execute(lex, MP_PARSE_FILE_INPUT, 0);
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}
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mp_obj_t pyb_set_repl_info(mp_obj_t o_value) {
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repl_display_debugging_info = mp_obj_get_int(o_value);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(pyb_set_repl_info_obj, pyb_set_repl_info);
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