#include #include #include #include #include "nlr.h" #include "misc.h" #include "mpconfig.h" #include "qstr.h" #include "misc.h" #include "lexer.h" #include "parse.h" #include "obj.h" #include "parsehelper.h" #include "compile.h" #include "runtime.h" #include "repl.h" #include "gc.h" #include "gccollect.h" #include "systick.h" #include "pyexec.h" #if 0 #include "storage.h" #endif #include "usb.h" #include "usart.h" static bool repl_display_debugging_info = 0; void stdout_tx_str(const char *str) { if (pyb_usart_global_debug != PYB_USART_NONE) { usart_tx_str(pyb_usart_global_debug, str); } #if defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD lcd_print_str(str); #endif usb_vcp_send_str(str); } void stdout_tx_strn(const char *str, uint len) { if (pyb_usart_global_debug != PYB_USART_NONE) { usart_tx_strn(pyb_usart_global_debug, str, len); } #if defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD lcd_print_strn(str, len); #endif usb_vcp_send_strn(str, len); } int stdin_rx_chr(void) { for (;;) { #if 0 #ifdef USE_HOST_MODE pyb_usb_host_process(); int c = pyb_usb_host_get_keyboard(); if (c != 0) { return c; } #endif #endif if (usb_vcp_rx_num() != 0) { return usb_vcp_rx_get(); } else if (pyb_usart_global_debug != PYB_USART_NONE && usart_rx_any(pyb_usart_global_debug)) { return usart_rx_char(pyb_usart_global_debug); } HAL_Delay(1); #if 0 if (storage_needs_flush()) { storage_flush(); } #endif } } char *str_dup(const char *str) { uint32_t len = strlen(str); char *s2 = m_new(char, len + 1); memcpy(s2, str, len); s2[len] = 0; return s2; } #define READLINE_HIST_SIZE (8) static const char *readline_hist[READLINE_HIST_SIZE] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL}; int readline(vstr_t *line, const char *prompt) { stdout_tx_str(prompt); int orig_line_len = line->len; int escape_seq = 0; int hist_cur = -1; int cursor_pos = orig_line_len; for (;;) { int c = stdin_rx_chr(); int last_line_len = line->len; int redraw_step_back = 0; bool redraw_from_cursor = false; int redraw_step_forward = 0; if (escape_seq == 0) { if (VCP_CHAR_CTRL_A <= c && c <= VCP_CHAR_CTRL_D && vstr_len(line) == orig_line_len) { // control character with empty line return c; } else if (c == '\r') { // newline stdout_tx_str("\r\n"); if (line->len > orig_line_len && (readline_hist[0] == NULL || strcmp(readline_hist[0], line->buf + orig_line_len) != 0)) { // a line which is not empty and different from the last one // so update the history for (int i = READLINE_HIST_SIZE - 1; i > 0; i--) { readline_hist[i] = readline_hist[i - 1]; } readline_hist[0] = str_dup(line->buf + orig_line_len); } return 0; } else if (c == 27) { // escape sequence escape_seq = 1; } else if (c == 127) { // backspace if (cursor_pos > orig_line_len) { vstr_cut_out_bytes(line, cursor_pos - 1, 1); // set redraw parameters redraw_step_back = 1; redraw_from_cursor = true; } } else if (32 <= c && c <= 126) { // printable character vstr_ins_char(line, cursor_pos, c); // set redraw parameters redraw_from_cursor = true; redraw_step_forward = 1; } } else if (escape_seq == 1) { if (c == '[') { escape_seq = 2; } else { escape_seq = 0; } } else if (escape_seq == 2) { escape_seq = 0; if (c == 'A') { // up arrow if (hist_cur + 1 < READLINE_HIST_SIZE && readline_hist[hist_cur + 1] != NULL) { // increase hist num hist_cur += 1; // set line to history line->len = orig_line_len; vstr_add_str(line, readline_hist[hist_cur]); // set redraw parameters redraw_step_back = cursor_pos - orig_line_len; redraw_from_cursor = true; redraw_step_forward = line->len - orig_line_len; } } else if (c == 'B') { // down arrow if (hist_cur >= 0) { // decrease hist num hist_cur -= 1; // set line to history vstr_cut_tail_bytes(line, line->len - orig_line_len); if (hist_cur >= 0) { vstr_add_str(line, readline_hist[hist_cur]); } // set redraw parameters redraw_step_back = cursor_pos - orig_line_len; redraw_from_cursor = true; redraw_step_forward = line->len - orig_line_len; } } else if (c == 'C') { // right arrow if (cursor_pos < line->len) { redraw_step_forward = 1; } } else if (c == 'D') { // left arrow if (cursor_pos > orig_line_len) { redraw_step_back = 1; } } } else { escape_seq = 0; } // redraw command prompt, efficiently if (redraw_step_back > 0) { for (int i = 0; i < redraw_step_back; i++) { stdout_tx_str("\b"); } cursor_pos -= redraw_step_back; } if (redraw_from_cursor) { if (line->len < last_line_len) { // erase old chars for (int i = cursor_pos; i < last_line_len; i++) { stdout_tx_str(" "); } // step back for (int i = cursor_pos; i < last_line_len; i++) { stdout_tx_str("\b"); } } // draw new chars stdout_tx_strn(line->buf + cursor_pos, line->len - cursor_pos); // move cursor forward if needed (already moved forward by length of line, so move it back) for (int i = cursor_pos + redraw_step_forward; i < line->len; i++) { stdout_tx_str("\b"); } cursor_pos += redraw_step_forward; } else if (redraw_step_forward > 0) { // draw over old chars to move cursor forwards stdout_tx_strn(line->buf + cursor_pos, redraw_step_forward); cursor_pos += redraw_step_forward; } HAL_Delay(1); } } // parses, compiles and executes the code in the lexer // frees the lexer before returning bool parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) { mp_parse_error_kind_t parse_error_kind; mp_parse_node_t pn = mp_parse(lex, input_kind, &parse_error_kind); qstr source_name = mp_lexer_source_name(lex); if (pn == MP_PARSE_NODE_NULL) { // parse error mp_parse_show_exception(lex, parse_error_kind); mp_lexer_free(lex); return false; } mp_lexer_free(lex); mp_obj_t module_fun = mp_compile(pn, source_name, is_repl); mp_parse_node_free(pn); if (module_fun == mp_const_none) { return false; } nlr_buf_t nlr; bool ret; uint32_t start = HAL_GetTick(); if (nlr_push(&nlr) == 0) { usb_vcp_set_interrupt_char(VCP_CHAR_CTRL_C); // allow ctrl-C to interrupt us rt_call_function_0(module_fun); usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt nlr_pop(); ret = true; } else { // uncaught exception // FIXME it could be that an interrupt happens just before we disable it here usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt mp_obj_print_exception((mp_obj_t)nlr.ret_val); ret = false; } // display debugging info if wanted if (is_repl && repl_display_debugging_info) { uint32_t ticks = HAL_GetTick() - start; // TODO implement a function that does this properly printf("took %lu ms\n", ticks); gc_collect(); // qstr info { 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:\n n_pool=%u\n n_qstr=%u\n n_str_data_bytes=%u\n n_total_bytes=%u\n", n_pool, n_qstr, n_str_data_bytes, n_total_bytes); } // GC info { gc_info_t info; gc_info(&info); printf("GC:\n"); printf(" %lu total\n", info.total); printf(" %lu : %lu\n", info.used, info.free); printf(" 1=%lu 2=%lu m=%lu\n", info.num_1block, info.num_2block, info.max_block); } } return ret; } void pyexec_raw_repl(void) { vstr_t line; vstr_init(&line, 32); raw_repl_reset: stdout_tx_str("raw REPL; CTRL-C to exit\r\n"); for (;;) { vstr_reset(&line); stdout_tx_str(">"); for (;;) { char c = stdin_rx_chr(); if (c == VCP_CHAR_CTRL_A) { goto raw_repl_reset; } else if (c == VCP_CHAR_CTRL_C) { vstr_reset(&line); break; } else if (c == VCP_CHAR_CTRL_D) { break; } else if (c == '\r') { vstr_add_char(&line, '\n'); } else if (32 <= c && c <= 126) { vstr_add_char(&line, c); } } stdout_tx_str("OK"); if (vstr_len(&line) == 0) { // finished break; } mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr_str(&line), vstr_len(&line), 0); parse_compile_execute(lex, MP_PARSE_FILE_INPUT, false); stdout_tx_str("\004"); } vstr_clear(&line); stdout_tx_str("\r\n"); } void pyexec_repl(void) { #if defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD // in host mode, we enable the LCD for the repl mp_obj_t lcd_o = rt_call_function_0(rt_load_name(qstr_from_str("LCD"))); rt_call_function_1(rt_load_attr(lcd_o, qstr_from_str("light")), mp_const_true); #endif stdout_tx_str("Micro Python build on 25/1/2014; " MICROPY_HW_BOARD_NAME " with STM32F405RG\r\n"); stdout_tx_str("Type \"help()\" for more information.\r\n"); // to test ctrl-C /* { uint32_t x[4] = {0x424242, 0xdeaddead, 0x242424, 0xdeadbeef}; for (;;) { nlr_buf_t nlr; printf("pyexec_repl: %p\n", x); usb_vcp_set_interrupt_char(VCP_CHAR_CTRL_C); if (nlr_push(&nlr) == 0) { for (;;) { } } else { printf("break\n"); } } } */ vstr_t line; vstr_init(&line, 32); for (;;) { vstr_reset(&line); int ret = readline(&line, ">>> "); if (ret == VCP_CHAR_CTRL_A) { pyexec_raw_repl(); continue; } else if (ret == VCP_CHAR_CTRL_C) { stdout_tx_str("\r\n"); continue; } else if (ret == VCP_CHAR_CTRL_D) { // EOF break; } else if (vstr_len(&line) == 0) { continue; } if (mp_repl_is_compound_stmt(vstr_str(&line))) { for (;;) { vstr_add_char(&line, '\n'); int len = vstr_len(&line); int ret = readline(&line, "... "); if (ret == VCP_CHAR_CTRL_D || vstr_len(&line) == len) { // done entering compound statement break; } } } mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr_str(&line), vstr_len(&line), 0); parse_compile_execute(lex, MP_PARSE_SINGLE_INPUT, true); } stdout_tx_str("\r\n"); } bool pyexec_file(const char *filename) { mp_lexer_t *lex = mp_lexer_new_from_file(filename); if (lex == NULL) { printf("could not open file '%s' for reading\n", filename); return false; } return parse_compile_execute(lex, MP_PARSE_FILE_INPUT, false); } mp_obj_t pyb_set_repl_info(mp_obj_t o_value) { repl_display_debugging_info = mp_obj_get_int(o_value); return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_1(pyb_set_repl_info_obj, pyb_set_repl_info);