// helper function to print an exception with traceback
void mp_obj_print_exception(const mp_print_t *print, mp_obj_t exc) {
if (mp_obj_is_exception_instance(exc)) {
size_t n, *values;
mp_obj_exception_get_traceback(exc, &n, &values);
if (n > 0) {
assert(n % 3 == 0);
mp_print_str(print, "Traceback (most recent call last):\n");
for (int i = n - 3; i >= 0; i -= 3) {
#if MICROPY_ENABLE_SOURCE_LINE
mp_printf(print, " File \"%q\", line %d", values[i], (int)values[i + 1]);
#else
mp_printf(print, " File \"%q\"", values[i]);
#endif
// the block name can be NULL if it's unknown
qstr block = values[i + 2];
if (block == MP_QSTR_NULL) {
mp_print_str(print, "\n");
} else {
mp_printf(print, ", in %q\n", block);
}
}
}
}
mp_obj_print_helper(print, exc, PRINT_EXC);
mp_print_str(print, "\n");
}
// Return true if exception (type or instance) is a subclass of given
// exception type. Assumes exc_type is a subclass of BaseException, as
// defined by mp_obj_is_exception_type(exc_type).
bool mp_obj_exception_match(mp_obj_t exc, mp_const_obj_t exc_type) {
// if exc is an instance of an exception, then extract and use its type
if (mp_obj_is_exception_instance(exc)) {
exc = MP_OBJ_FROM_PTR(mp_obj_get_type(exc));
}
return mp_obj_is_subclass_fast(exc, exc_type);
}
// helper function to print an exception with traceback
void mp_obj_print_exception(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t exc) {
if (mp_obj_is_exception_instance(exc)) {
mp_uint_t n, *values;
mp_obj_exception_get_traceback(exc, &n, &values);
if (n > 0) {
assert(n % 3 == 0);
print(env, "Traceback (most recent call last):\n");
for (int i = n - 3; i >= 0; i -= 3) {
#if MICROPY_ENABLE_SOURCE_LINE
print(env, " File \"%s\", line %d", qstr_str(values[i]), (int)values[i + 1]);
#else
print(env, " File \"%s\"", qstr_str(values[i]));
#endif
// the block name can be NULL if it's unknown
qstr block = values[i + 2];
if (block == MP_QSTR_NULL) {
print(env, "\n");
} else {
print(env, ", in %s\n", qstr_str(block));
}
}
}
}
mp_obj_print_helper(print, env, exc, PRINT_EXC);
print(env, "\n");
}
void do_file(const char *file) {
mp_lexer_t *lex = mp_lexer_new_from_file(file);
if (lex == NULL) {
return;
}
if (0) {
// just tokenise
while (lex->tok_kind != MP_TOKEN_END) {
mp_lexer_show_token(lex);
mp_lexer_to_next(lex);
}
mp_lexer_free(lex);
} else {
// parse
mp_parse_error_kind_t parse_error_kind;
mp_parse_node_t pn = mp_parse(lex, MP_PARSE_FILE_INPUT, &parse_error_kind);
if (pn == MP_PARSE_NODE_NULL) {
// parse error
mp_parse_show_exception(lex, parse_error_kind);
mp_lexer_free(lex);
return;
}
mp_lexer_free(lex);
if (pn != MP_PARSE_NODE_NULL) {
//printf("----------------\n");
//mp_parse_node_print(pn, 0);
//printf("----------------\n");
// compile
mp_obj_t module_fun = mp_compile(pn, 0, MP_EMIT_OPT_NONE, false);
//printf("----------------\n");
if (mp_obj_is_exception_instance(module_fun)) {
mp_obj_print_exception(module_fun);
}
}
}
}
// helper function to print an exception with traceback
void mp_obj_print_exception(mp_obj_t exc) {
if (mp_obj_is_exception_instance(exc)) {
machine_uint_t n, *values;
mp_obj_exception_get_traceback(exc, &n, &values);
if (n > 0) {
assert(n % 3 == 0);
printf("Traceback (most recent call last):\n");
for (int i = n - 3; i >= 0; i -= 3) {
#if MICROPY_ENABLE_SOURCE_LINE
printf(" File \"%s\", line %d, in %s\n", qstr_str(values[i]), (int)values[i + 1], qstr_str(values[i + 2]));
#else
printf(" File \"%s\", in %s\n", qstr_str(values[i]), qstr_str(values[i + 2]));
#endif
}
}
}
mp_obj_print(exc, PRINT_EXC);
printf("\n");
}
void do_str(const char *src) {
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
if (lex == NULL) {
return;
}
mp_parse_error_kind_t parse_error_kind;
mp_parse_node_t pn = mp_parse(lex, MP_PARSE_SINGLE_INPUT, &parse_error_kind);
if (pn == MP_PARSE_NODE_NULL) {
// parse error
mp_parse_show_exception(lex, parse_error_kind);
mp_lexer_free(lex);
return;
}
// parse okay
qstr source_name = mp_lexer_source_name(lex);
mp_lexer_free(lex);
mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, true);
if (mp_obj_is_exception_instance(module_fun)) {
// compile error
mp_obj_print_exception(module_fun);
return;
}
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);
}
}
// parses, compiles and executes the code in the lexer
// frees the lexer before returning
// EXEC_FLAG_PRINT_EOF prints 2 EOF chars: 1 after normal output, 1 after exception output
// EXEC_FLAG_ALLOW_DEBUGGING allows debugging info to be printed after executing the code
// EXEC_FLAG_IS_REPL is used for REPL inputs (flag passed on to mp_compile)
STATIC int parse_compile_execute(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, int exec_flags) {
int ret = 0;
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);
// check for parse error
if (pn == MP_PARSE_NODE_NULL) {
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
stdout_tx_strn("\x04", 1);
}
mp_parse_show_exception(lex, parse_error_kind);
mp_lexer_free(lex);
goto finish;
}
mp_lexer_free(lex);
mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, exec_flags & EXEC_FLAG_IS_REPL);
// check for compile error
if (mp_obj_is_exception_instance(module_fun)) {
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
stdout_tx_strn("\x04", 1);
}
mp_obj_print_exception(module_fun);
goto finish;
}
// execute code
nlr_buf_t nlr;
uint32_t start = HAL_GetTick();
if (nlr_push(&nlr) == 0) {
mp_hal_set_interrupt_char(CHAR_CTRL_C); // allow ctrl-C to interrupt us
mp_call_function_0(module_fun);
mp_hal_set_interrupt_char(-1); // disable interrupt
nlr_pop();
ret = 1;
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
stdout_tx_strn("\x04", 1);
}
} else {
// uncaught exception
// FIXME it could be that an interrupt happens just before we disable it here
mp_hal_set_interrupt_char(-1); // disable interrupt
// print EOF after normal output
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
stdout_tx_strn("\x04", 1);
}
// check for SystemExit
if (mp_obj_is_subclass_fast(mp_obj_get_type((mp_obj_t)nlr.ret_val), &mp_type_SystemExit)) {
// at the moment, the value of SystemExit is unused
ret = PYEXEC_FORCED_EXIT;
} else {
mp_obj_print_exception((mp_obj_t)nlr.ret_val);
ret = 0;
}
}
// display debugging info if wanted
if ((exec_flags & EXEC_FLAG_ALLOW_DEBUGGING) && repl_display_debugging_info) {
mp_uint_t ticks = HAL_GetTick() - start; // TODO implement a function that does this properly
printf("took " UINT_FMT " ms\n", ticks);
gc_collect();
// qstr info
{
mp_uint_t 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=" 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);
}
// GC info
{
gc_info_t info;
gc_info(&info);
printf("GC:\n");
printf(" " UINT_FMT " total\n", info.total);
printf(" " UINT_FMT " : " UINT_FMT "\n", info.used, info.free);
printf(" 1=" UINT_FMT " 2=" UINT_FMT " m=" UINT_FMT "\n", info.num_1block, info.num_2block, info.max_block);
}
}
finish:
if (exec_flags & EXEC_FLAG_PRINT_EOF) {
stdout_tx_strn("\x04", 1);
}
return ret;
}
// 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, MP_EMIT_OPT_NONE, is_repl);
if (mp_obj_is_exception_instance(module_fun)) {
mp_obj_print_exception(module_fun);
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
mp_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
{
mp_uint_t 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=" 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);
}
// GC info
{
gc_info_t info;
gc_info(&info);
printf("GC:\n");
printf(" " UINT_FMT " total\n", info.total);
printf(" " UINT_FMT " : " UINT_FMT "\n", info.used, info.free);
printf(" 1=" UINT_FMT " 2=" UINT_FMT " m=" UINT_FMT "\n", info.num_1block, info.num_2block, info.max_block);
}
}
return ret;
}
