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Address dpgeorge feedback - largely simplifications

This commit is contained in:
Josh Klar 2019-09-26 16:48:02 -07:00 committed by Jeff Epler
parent 3a7a5ba686
commit 40bc05ee1e
3 changed files with 20 additions and 29 deletions
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24
py/lexer.c
View File

@ -129,29 +129,21 @@ STATIC bool is_tail_of_identifier(mp_lexer_t *lex) {
STATIC void swap_char_banks(mp_lexer_t *lex) {
if (lex->vstr_postfix_processing) {
unichar h0, h1, h2;
lex->chr3 = lex->chr0;
lex->chr4 = lex->chr1;
lex->chr5 = lex->chr2;
lex->chr0 = lex->vstr_postfix.buf[0];
lex->chr1 = lex->vstr_postfix.buf[1];
lex->chr2 = lex->vstr_postfix.buf[2];
h0 = lex->chr0;
h1 = lex->chr1;
h2 = lex->chr2;
lex->chr0 = lex->vstr_postfix.len > 0 ? lex->vstr_postfix.buf[0] : 0;
lex->chr1 = lex->vstr_postfix.len > 1 ? lex->vstr_postfix.buf[1] : 0;
lex->chr2 = lex->vstr_postfix.len > 2 ? lex->vstr_postfix.buf[2] : 0;
lex->chr3 = h0;
lex->chr4 = h1;
lex->chr5 = h2;
lex->vstr_postfix_idx = lex->vstr_postfix.len > 2 ? 3 : lex->vstr_postfix.len;
lex->vstr_postfix_idx = 3;
} else {
// blindly reset to the "backup" bank when done postfix processing
// this restores control to the mp_reader
lex->chr0 = lex->chr3;
lex->chr1 = lex->chr4;
lex->chr2 = lex->chr5;
lex->chr3 = 0;
lex->chr4 = 0;
lex->chr5 = 0;
// willfully ignoring setting chr3-5 here - WARNING consider those garbage data now
vstr_reset(&lex->vstr_postfix);
lex->vstr_postfix_idx = 0;

12
py/parse.c
View File

@ -1178,6 +1178,7 @@ mp_parse_tree_t mp_parse(mp_lexer_t *lex, mp_parse_input_kind_t input_kind) {
exc = mp_obj_new_exception_msg(&mp_type_IndentationError,
translate("unindent does not match any outer indentation level"));
break;
#if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
case MP_TOKEN_FSTRING_BACKSLASH:
exc = mp_obj_new_exception_msg(&mp_type_SyntaxError,
translate("f-string expression part cannot include a backslash"));
@ -1202,6 +1203,17 @@ mp_parse_tree_t mp_parse(mp_lexer_t *lex, mp_parse_input_kind_t input_kind) {
exc = mp_obj_new_exception_msg(&mp_type_NotImplementedError,
translate("raw f-strings are not implemented"));
break;
#else
case MP_TOKEN_FSTRING_BACKSLASH:
case MP_TOKEN_FSTRING_COMMENT:
case MP_TOKEN_FSTRING_UNCLOSED:
case MP_TOKEN_FSTRING_UNOPENED:
case MP_TOKEN_FSTRING_EMPTY_EXP:
case MP_TOKEN_FSTRING_RAW:
exc = mp_obj_new_exception_msg(&mp_type_SyntaxError,
translate("malformed f-string"));
break;
#endif
default:
exc = mp_obj_new_exception_msg(&mp_type_SyntaxError,
translate("invalid syntax"));

13
tests/basics/string_pep498_fstring.py
View File

@ -111,16 +111,3 @@ assert ('a' 'b' f'{x}' f'str<{y:^4}>' 'd' 'e') == 'ab10str< hi >de'
# Other tests
assert f'{{{4*10}}}' == '{40}'
try:
eval("fr''")
except NotImplementedError:
pass
else:
raise RuntimeError('expected raw f-string to raise NotImplementedError')
try:
eval("rf''")
except NotImplementedError:
pass
else:
raise RuntimeError('expected raw f-string to raise NotImplementedError')