# define PL_nextval (PL_parser->nextval)
#endif
-static const char ident_too_long[] = "Identifier too long";
+static const char* const ident_too_long = "Identifier too long";
#ifdef PERL_MAD
# define CURMAD(slot,sv) if (PL_madskills) { curmad(slot,sv); sv = 0; }
{ GIVEN, TOKENTYPE_IVAL, "GIVEN" },
{ HASHBRACK, TOKENTYPE_NONE, "HASHBRACK" },
{ IF, TOKENTYPE_IVAL, "IF" },
- { LABEL, TOKENTYPE_OPVAL, "LABEL" },
+ { LABEL, TOKENTYPE_PVAL, "LABEL" },
{ LOCAL, TOKENTYPE_IVAL, "LOCAL" },
{ LOOPEX, TOKENTYPE_OPNUM, "LOOPEX" },
{ LSTOP, TOKENTYPE_OPNUM, "LSTOP" },
"\t(Missing semicolon on previous line?)\n");
else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) {
const char *t;
- for (t = PL_oldoldbufptr; (isALNUM_lazy_if(t,UTF) || *t == ':');
+ for (t = PL_oldoldbufptr; (isWORDCHAR_lazy_if(t,UTF) || *t == ':');
t += UTF ? UTF8SKIP(t) : 1)
NOOP;
if (t < PL_bufptr && isSPACE(*t))
(parser->old_parser && parser->rsfp != parser->old_parser->rsfp)))
PerlIO_close(parser->rsfp);
SvREFCNT_dec(parser->rsfp_filters);
+ SvREFCNT_dec(parser->lex_stuff);
+ SvREFCNT_dec(parser->sublex_info.repl);
Safefree(parser->lex_brackstack);
Safefree(parser->lex_casestack);
Safefree(parser);
}
+void
+Perl_parser_free_nexttoke_ops(pTHX_ yy_parser *parser, OPSLAB *slab)
+{
+#ifdef PERL_MAD
+ I32 nexttoke = parser->lasttoke;
+#else
+ I32 nexttoke = parser->nexttoke;
+#endif
+ PERL_ARGS_ASSERT_PARSER_FREE_NEXTTOKE_OPS;
+ while (nexttoke--) {
+#ifdef PERL_MAD
+ if (S_is_opval_token(parser->nexttoke[nexttoke].next_type
+ & 0xffff)
+ && parser->nexttoke[nexttoke].next_val.opval
+ && parser->nexttoke[nexttoke].next_val.opval->op_slabbed
+ && OpSLAB(parser->nexttoke[nexttoke].next_val.opval) == slab) {
+ op_free(parser->nexttoke[nexttoke].next_val.opval);
+ parser->nexttoke[nexttoke].next_val.opval = NULL;
+ }
+#else
+ if (S_is_opval_token(parser->nexttype[nexttoke] & 0xffff)
+ && parser->nextval[nexttoke].opval
+ && parser->nextval[nexttoke].opval->op_slabbed
+ && OpSLAB(parser->nextval[nexttoke].opval) == slab) {
+ op_free(parser->nextval[nexttoke].opval);
+ parser->nextval[nexttoke].opval = NULL;
+ }
+#endif
+ }
+}
+
/*
=for apidoc AmxU|SV *|PL_parser-E<gt>linestr
if (flags & LEX_STUFF_UTF8) {
goto plain_copy;
} else {
- STRLEN highhalf = 0;
+ STRLEN highhalf = 0; /* Count of variants */
const char *p, *e = pv+len;
- for (p = pv; p != e; p++)
- highhalf += !!(((U8)*p) & 0x80);
+ for (p = pv; p != e; p++) {
+ if (! UTF8_IS_INVARIANT(*p)) {
+ highhalf++;
+ }
+ }
if (!highhalf)
goto plain_copy;
lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len+highhalf);
PL_parser->bufend += len+highhalf;
for (p = pv; p != e; p++) {
U8 c = (U8)*p;
- if (c & 0x80) {
- *bufptr++ = (char)(0xc0 | (c >> 6));
- *bufptr++ = (char)(0x80 | (c & 0x3f));
+ if (! UTF8_IS_INVARIANT(c)) {
+ *bufptr++ = UTF8_TWO_BYTE_HI(c);
+ *bufptr++ = UTF8_TWO_BYTE_LO(c);
} else {
*bufptr++ = (char)c;
}
const char *p, *e = pv+len;
for (p = pv; p != e; p++) {
U8 c = (U8)*p;
- if (c >= 0xc4) {
+ if (UTF8_IS_ABOVE_LATIN1(c)) {
Perl_croak(aTHX_ "Lexing code attempted to stuff "
"non-Latin-1 character into Latin-1 input");
- } else if (c >= 0xc2 && p+1 != e &&
- (((U8)p[1]) & 0xc0) == 0x80) {
+ } else if (UTF8_IS_NEXT_CHAR_DOWNGRADEABLE(p, e)) {
p++;
highhalf++;
- } else if (c >= 0x80) {
+ } else if (! UTF8_IS_INVARIANT(c)) {
/* malformed UTF-8 */
ENTER;
SAVESPTR(PL_warnhook);
SvCUR_set(PL_parser->linestr,
SvCUR(PL_parser->linestr) + len-highhalf);
PL_parser->bufend += len-highhalf;
- for (p = pv; p != e; p++) {
- U8 c = (U8)*p;
- if (c & 0x80) {
- *bufptr++ = (char)(((c & 0x3) << 6) | (p[1] & 0x3f));
- p++;
- } else {
- *bufptr++ = (char)c;
+ p = pv;
+ while (p < e) {
+ if (UTF8_IS_INVARIANT(*p)) {
+ *bufptr++ = *p;
+ p++;
}
+ else {
+ assert(p < e -1 );
+ *bufptr++ = TWO_BYTE_UTF8_TO_UNI(*p, *(p+1));
+ p += 2;
+ }
}
} else {
- plain_copy:
+ plain_copy:
lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len);
bufptr = PL_parser->bufptr;
Move(bufptr, bufptr+len, PL_parser->bufend+1-bufptr, char);
bufend = PL_parser->bufend;
}
head = (U8)*s;
- if (!(head & 0x80))
+ if (UTF8_IS_INVARIANT(head))
return head;
- if (head & 0x40) {
- len = PL_utf8skip[head];
+ if (UTF8_IS_START(head)) {
+ len = UTF8SKIP(&head);
while ((STRLEN)(bufend-s) < len) {
if (!lex_next_chunk(flags | LEX_KEEP_PREVIOUS))
break;
/* skip space before PL_thistoken */
STATIC char *
-S_skipspace0(pTHX_ register char *s)
+S_skipspace0(pTHX_ char *s)
{
PERL_ARGS_ASSERT_SKIPSPACE0;
/* skip space after PL_thistoken */
STATIC char *
-S_skipspace1(pTHX_ register char *s)
+S_skipspace1(pTHX_ char *s)
{
const char *start = s;
I32 startoff = start - SvPVX(PL_linestr);
}
STATIC char *
-S_skipspace2(pTHX_ register char *s, SV **svp)
+S_skipspace2(pTHX_ char *s, SV **svp)
{
char *start;
const I32 bufptroff = PL_bufptr - SvPVX(PL_linestr);
*/
STATIC char *
-S_skipspace(pTHX_ register char *s)
+S_skipspace(pTHX_ char *s)
{
#ifdef PERL_MAD
char *start = s;
while (isSPACE(*PL_last_uni))
PL_last_uni++;
s = PL_last_uni;
- while (isALNUM_lazy_if(s,UTF) || *s == '-')
+ while (isWORDCHAR_lazy_if(s,UTF) || *s == '-')
s++;
if ((t = strchr(s, '(')) && t < PL_bufptr)
return;
tokereport(type, &NEXTVAL_NEXTTOKE);
}
#endif
- /* Don’t let opslab_force_free snatch it */
- if (S_is_opval_token(type & 0xffff) && NEXTVAL_NEXTTOKE.opval) {
- assert(!NEXTVAL_NEXTTOKE.opval->op_savefree);
- NEXTVAL_NEXTTOKE.opval->op_savefree = 1;
- }
#ifdef PERL_MAD
if (PL_curforce < 0)
start_force(PL_lasttoke);
*/
STATIC char *
-S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick)
+S_force_word(pTHX_ char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick)
{
dVAR;
char *s;
*/
STATIC void
-S_force_ident(pTHX_ register const char *s, int kind)
+S_force_ident(pTHX_ const char *s, int kind)
{
dVAR;
PERL_ARGS_ASSERT_FORCE_IDENT;
- if (*s) {
- const STRLEN len = strlen(s);
+ if (s[0]) {
+ const STRLEN len = s[1] ? strlen(s) : 1; /* s = "\"" see yylex */
OP* const o = (OP*)newSVOP(OP_CONST, 0, newSVpvn_flags(s, len,
UTF ? SVf_UTF8 : 0));
start_force(PL_curforce);
}
}
+PERL_STATIC_INLINE SV*
+S_get_and_check_backslash_N_name(pTHX_ const char* s, const char* const e)
+{
+ /* <s> points to first character of interior of \N{}, <e> to one beyond the
+ * interior, hence to the "}". Finds what the name resolves to, returning
+ * an SV* containing it; NULL if no valid one found */
+
+ SV* res = newSVpvn_flags(s, e - s, UTF ? SVf_UTF8 : 0);
+
+ HV * table;
+ SV **cvp;
+ SV *cv;
+ SV *rv;
+ HV *stash;
+ const U8* first_bad_char_loc;
+ const char* backslash_ptr = s - 3; /* Points to the <\> of \N{... */
+
+ PERL_ARGS_ASSERT_GET_AND_CHECK_BACKSLASH_N_NAME;
+
+ if (UTF && ! is_utf8_string_loc((U8 *) backslash_ptr,
+ e - backslash_ptr,
+ &first_bad_char_loc))
+ {
+ /* If warnings are on, this will print a more detailed analysis of what
+ * is wrong than the error message below */
+ utf8n_to_uvuni(first_bad_char_loc,
+ e - ((char *) first_bad_char_loc),
+ NULL, 0);
+
+ /* We deliberately don't try to print the malformed character, which
+ * might not print very well; it also may be just the first of many
+ * malformations, so don't print what comes after it */
+ yyerror(Perl_form(aTHX_
+ "Malformed UTF-8 character immediately after '%.*s'",
+ (int) (first_bad_char_loc - (U8 *) backslash_ptr), backslash_ptr));
+ return NULL;
+ }
+
+ res = new_constant( NULL, 0, "charnames", res, NULL, backslash_ptr,
+ /* include the <}> */
+ e - backslash_ptr + 1);
+ if (! SvPOK(res)) {
+ SvREFCNT_dec_NN(res);
+ return NULL;
+ }
+
+ /* See if the charnames handler is the Perl core's, and if so, we can skip
+ * the validation needed for a user-supplied one, as Perl's does its own
+ * validation. */
+ table = GvHV(PL_hintgv); /* ^H */
+ cvp = hv_fetchs(table, "charnames", FALSE);
+ if (cvp && (cv = *cvp) && SvROK(cv) && ((rv = SvRV(cv)) != NULL)
+ && SvTYPE(rv) == SVt_PVCV && ((stash = CvSTASH(rv)) != NULL))
+ {
+ const char * const name = HvNAME(stash);
+ if strEQ(name, "_charnames") {
+ return res;
+ }
+ }
+
+ /* Here, it isn't Perl's charname handler. We can't rely on a
+ * user-supplied handler to validate the input name. For non-ut8 input,
+ * look to see that the first character is legal. Then loop through the
+ * rest checking that each is a continuation */
+
+ /* This code needs to be sync'ed with a regex in _charnames.pm which does
+ * the same thing */
+
+ if (! UTF) {
+ if (! isALPHAU(*s)) {
+ goto bad_charname;
+ }
+ s++;
+ while (s < e) {
+ if (! isCHARNAME_CONT(*s)) {
+ goto bad_charname;
+ }
+ if (*s == ' ' && *(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) {
+ Perl_warn(aTHX_ "A sequence of multiple spaces in a charnames alias definition is deprecated");
+ }
+ s++;
+ }
+ if (*(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) {
+ Perl_warn(aTHX_ "Trailing white-space in a charnames alias definition is deprecated");
+ }
+ }
+ else {
+ /* Similarly for utf8. For invariants can check directly; for other
+ * Latin1, can calculate their code point and check; otherwise use a
+ * swash */
+ if (UTF8_IS_INVARIANT(*s)) {
+ if (! isALPHAU(*s)) {
+ goto bad_charname;
+ }
+ s++;
+ } else if (UTF8_IS_DOWNGRADEABLE_START(*s)) {
+ if (! isALPHAU(UNI_TO_NATIVE(TWO_BYTE_UTF8_TO_UNI(*s, *(s+1))))) {
+ goto bad_charname;
+ }
+ s += 2;
+ }
+ else {
+ if (! PL_utf8_charname_begin) {
+ U8 flags = _CORE_SWASH_INIT_ACCEPT_INVLIST;
+ PL_utf8_charname_begin = _core_swash_init("utf8",
+ "_Perl_Charname_Begin",
+ &PL_sv_undef,
+ 1, 0, NULL, &flags);
+ }
+ if (! swash_fetch(PL_utf8_charname_begin, (U8 *) s, TRUE)) {
+ goto bad_charname;
+ }
+ s += UTF8SKIP(s);
+ }
+
+ while (s < e) {
+ if (UTF8_IS_INVARIANT(*s)) {
+ if (! isCHARNAME_CONT(*s)) {
+ goto bad_charname;
+ }
+ if (*s == ' ' && *(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) {
+ Perl_warn(aTHX_ "A sequence of multiple spaces in a charnames alias definition is deprecated");
+ }
+ s++;
+ }
+ else if (UTF8_IS_DOWNGRADEABLE_START(*s)) {
+ if (! isCHARNAME_CONT(UNI_TO_NATIVE(TWO_BYTE_UTF8_TO_UNI(*s,
+ *(s+1)))))
+ {
+ goto bad_charname;
+ }
+ s += 2;
+ }
+ else {
+ if (! PL_utf8_charname_continue) {
+ U8 flags = _CORE_SWASH_INIT_ACCEPT_INVLIST;
+ PL_utf8_charname_continue = _core_swash_init("utf8",
+ "_Perl_Charname_Continue",
+ &PL_sv_undef,
+ 1, 0, NULL, &flags);
+ }
+ if (! swash_fetch(PL_utf8_charname_continue, (U8 *) s, TRUE)) {
+ goto bad_charname;
+ }
+ s += UTF8SKIP(s);
+ }
+ }
+ if (*(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) {
+ Perl_warn(aTHX_ "Trailing white-space in a charnames alias definition is deprecated");
+ }
+ }
+
+ if (SvUTF8(res)) { /* Don't accept malformed input */
+ const U8* first_bad_char_loc;
+ STRLEN len;
+ const char* const str = SvPV_const(res, len);
+ if (! is_utf8_string_loc((U8 *) str, len, &first_bad_char_loc)) {
+ /* If warnings are on, this will print a more detailed analysis of
+ * what is wrong than the error message below */
+ utf8n_to_uvuni(first_bad_char_loc,
+ (char *) first_bad_char_loc - str,
+ NULL, 0);
+
+ /* We deliberately don't try to print the malformed character,
+ * which might not print very well; it also may be just the first
+ * of many malformations, so don't print what comes after it */
+ yyerror_pv(
+ Perl_form(aTHX_
+ "Malformed UTF-8 returned by %.*s immediately after '%.*s'",
+ (int) (e - backslash_ptr + 1), backslash_ptr,
+ (int) ((char *) first_bad_char_loc - str), str
+ ),
+ SVf_UTF8);
+ return NULL;
+ }
+ }
+
+ return res;
+
+ bad_charname: {
+ int bad_char_size = ((UTF) ? UTF8SKIP(s) : 1);
+
+ /* The final %.*s makes sure that should the trailing NUL be missing
+ * that this print won't run off the end of the string */
+ yyerror_pv(
+ Perl_form(aTHX_
+ "Invalid character in \\N{...}; marked by <-- HERE in %.*s<-- HERE %.*s",
+ (int)(s - backslash_ptr + bad_char_size), backslash_ptr,
+ (int)(e - s + bad_char_size), s + bad_char_size
+ ),
+ UTF ? SVf_UTF8 : 0);
+ return NULL;
+ }
+}
+
/*
scan_const
In patterns:
expand:
- \N{ABC} => \N{U+41.42.43}
+ \N{FOO} => \N{U+hex_for_character_FOO}
+ (if FOO expands to multiple characters, expands to \N{U+xx.XX.yy ...})
pass through:
all other \-char, including \N and \N{ apart from \N{ABC}
isn't utf8, as for example
when it is entirely composed
of hex constants */
+ SV *res; /* result from charnames */
/* Note on sizing: The scanned constant is placed into sv, which is
* initialized by newSV() assuming one byte of output for every byte of
* far, plus the length the current construct will occupy, plus room for
* the trailing NUL, plus one byte for every input byte still unscanned */
- UV uv;
+ UV uv = UV_MAX; /* Initialize to weird value to try to catch any uses
+ before set */
#ifdef EBCDIC
UV literal_endpoint = 0;
bool native_range = TRUE; /* turned to FALSE if the first endpoint is Unicode. */
this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF);
}
+ /* Protect sv from errors and fatal warnings. */
+ ENTER_with_name("scan_const");
+ SAVEFREESV(sv);
while (s < send || dorange) {
#ifdef EBCDIC
&& !native_range
#endif
- ) {
+ ) {
char * const c = (char*)utf8_hop((U8*)d, -1);
char *e = d++;
while (e-- > c)
#endif
if (min > max) {
- SvREFCNT_dec(sv);
Perl_croak(aTHX_
"Invalid range \"%c-%c\" in transliteration operator",
(char)min, (char)max);
/* range begins (ignore - as first or last char) */
else if (*s == '-' && s+1 < send && s != start) {
if (didrange) {
- SvREFCNT_dec(sv);
Perl_croak(aTHX_ "Ambiguous range in transliteration operator");
}
if (has_utf8
(@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-)
*/
else if (*s == '@' && s[1]) {
- if (isALNUM_lazy_if(s+1,UTF))
+ if (isWORDCHAR_lazy_if(s+1,UTF))
break;
if (strchr(":'{$", s[1]))
break;
else if (PL_lex_inpat
&& (*s != 'N'
|| s[1] != '{'
- || regcurly(s + 1)))
+ || regcurly(s + 1, FALSE)))
{
*d++ = NATIVE_TO_NEED(has_utf8,'\\');
goto default_action;
/* FALL THROUGH */
default:
{
- if ((isALNUMC(*s)))
+ if ((isALPHANUMERIC(*s)))
Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
"Unrecognized escape \\%c passed through",
*s);
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
{
- I32 flags = 0;
+ I32 flags = PERL_SCAN_SILENT_ILLDIGIT;
STRLEN len = 3;
uv = NATIVE_TO_UNI(grok_oct(s, &len, &flags, NULL));
s += len;
+ if (len < 3 && s < send && isDIGIT(*s)
+ && ckWARN(WARN_MISC))
+ {
+ Perl_warner(aTHX_ packWARN(WARN_MISC),
+ "%s", form_short_octal_warning(s, len));
+ }
}
goto NUM_ESCAPE_INSERT;
/* eg. \o{24} indicates the octal constant \024 */
case 'o':
{
- STRLEN len;
const char* error;
- bool valid = grok_bslash_o(s, &uv, &len, &error, 1);
- s += len;
+ bool valid = grok_bslash_o(&s, &uv, &error,
+ TRUE, /* Output warning */
+ FALSE, /* Not strict */
+ TRUE, /* Output warnings for
+ non-portables */
+ UTF);
if (! valid) {
yyerror(error);
continue;
/* eg. \x24 indicates the hex constant 0x24 */
case 'x':
{
- STRLEN len;
const char* error;
- bool valid = grok_bslash_x(s, &uv, &len, &error, 1);
- s += len;
+ bool valid = grok_bslash_x(&s, &uv, &error,
+ TRUE, /* Output warning */
+ FALSE, /* Not strict */
+ TRUE, /* Output warnings for
+ non-portables */
+ UTF);
if (! valid) {
yyerror(error);
continue;
/* Here it looks like a named character */
- if (PL_lex_inpat) {
-
- /* XXX This block is temporary code. \N{} implies that the
- * pattern is to have Unicode semantics, and therefore
- * currently has to be encoded in utf8. By putting it in
- * utf8 now, we save a whole pass in the regular expression
- * compiler. Once that code is changed so Unicode
- * semantics doesn't necessarily have to be in utf8, this
- * block should be removed. However, the code that parses
- * the output of this would have to be changed to not
- * necessarily expect utf8 */
- if (!has_utf8) {
- SvCUR_set(sv, d - SvPVX_const(sv));
- SvPOK_on(sv);
- *d = '\0';
- /* See Note on sizing above. */
- sv_utf8_upgrade_flags_grow(sv,
- SV_GMAGIC|SV_FORCE_UTF8_UPGRADE,
- /* 5 = '\N{' + cur char + NUL */
- (STRLEN)(send - s) + 5);
- d = SvPVX(sv) + SvCUR(sv);
- has_utf8 = TRUE;
- }
- }
-
if (*s == 'U' && s[1] == '+') { /* \N{U+...} */
I32 flags = PERL_SCAN_ALLOW_UNDERSCORES
| PERL_SCAN_DISALLOW_PREFIX;
else d = (char*)uvuni_to_utf8((U8*)d, uv);
}
}
- else { /* Here is \N{NAME} but not \N{U+...}. */
-
- SV *res; /* result from charnames */
- const char *str; /* the string in 'res' */
- STRLEN len; /* its length */
-
- /* Get the value for NAME */
- res = newSVpvn(s, e - s);
- res = new_constant( NULL, 0, "charnames",
- /* includes all of: \N{...} */
- res, NULL, s - 3, e - s + 4 );
-
- /* Most likely res will be in utf8 already since the
- * standard charnames uses pack U, but a custom translator
- * can leave it otherwise, so make sure. XXX This can be
- * revisited to not have charnames use utf8 for characters
- * that don't need it when regexes don't have to be in utf8
- * for Unicode semantics. If doing so, remember EBCDIC */
- sv_utf8_upgrade(res);
- str = SvPV_const(res, len);
-
- /* Don't accept malformed input */
- if (! is_utf8_string((U8 *) str, len)) {
- yyerror("Malformed UTF-8 returned by \\N");
- }
- else if (PL_lex_inpat) {
+ else /* Here is \N{NAME} but not \N{U+...}. */
+ if ((res = get_and_check_backslash_N_name(s, e)))
+ {
+ STRLEN len;
+ const char *str = SvPV_const(res, len);
+ if (PL_lex_inpat) {
if (! len) { /* The name resolved to an empty string */
Copy("\\N{}", d, 4, char);
* returned by charnames */
const char *str_end = str + len;
- STRLEN char_length; /* cur char's byte length */
- STRLEN output_length; /* and the number of bytes
- after this is translated
- into hex digits */
const STRLEN off = d - SvPVX_const(sv);
- /* 2 hex per byte; 2 chars for '\N'; 2 chars for
- * max('U+', '.'); and 1 for NUL */
- char hex_string[2 * UTF8_MAXBYTES + 5];
-
- /* Get the first character of the result. */
- U32 uv = utf8n_to_uvuni((U8 *) str,
- len,
- &char_length,
- UTF8_ALLOW_ANYUV);
-
- /* The call to is_utf8_string() above hopefully
- * guarantees that there won't be an error. But
- * it's easy here to make sure. The function just
- * above warns and returns 0 if invalid utf8, but
- * it can also return 0 if the input is validly a
- * NUL. Disambiguate */
- if (uv == 0 && NATIVE_TO_ASCII(*str) != '\0') {
- uv = UNICODE_REPLACEMENT;
- }
-
- /* Convert first code point to hex, including the
- * boiler plate before it. For all these, we
- * convert to native format so that downstream code
- * can continue to assume the input is native */
- output_length =
- my_snprintf(hex_string, sizeof(hex_string),
- "\\N{U+%X",
- (unsigned int) UNI_TO_NATIVE(uv));
-
- /* Make sure there is enough space to hold it */
- d = off + SvGROW(sv, off
- + output_length
- + (STRLEN)(send - e)
- + 2); /* '}' + NUL */
- /* And output it */
- Copy(hex_string, d, output_length, char);
- d += output_length;
-
- /* For each subsequent character, append dot and
- * its ordinal in hex */
- while ((str += char_length) < str_end) {
- const STRLEN off = d - SvPVX_const(sv);
- U32 uv = utf8n_to_uvuni((U8 *) str,
- str_end - str,
- &char_length,
- UTF8_ALLOW_ANYUV);
- if (uv == 0 && NATIVE_TO_ASCII(*str) != '\0') {
- uv = UNICODE_REPLACEMENT;
- }
-
- output_length =
- my_snprintf(hex_string, sizeof(hex_string),
- ".%X",
- (unsigned int) UNI_TO_NATIVE(uv));
-
- d = off + SvGROW(sv, off
- + output_length
- + (STRLEN)(send - e)
- + 2); /* '}' + NUL */
- Copy(hex_string, d, output_length, char);
- d += output_length;
+ if (! SvUTF8(res)) {
+ /* For the non-UTF-8 case, we can determine the
+ * exact length needed without having to parse
+ * through the string. Each character takes up
+ * 2 hex digits plus either a trailing dot or
+ * the "}" */
+ d = off + SvGROW(sv, off
+ + 3 * len
+ + 6 /* For the "\N{U+", and
+ trailing NUL */
+ + (STRLEN)(send - e));
+ Copy("\\N{U+", d, 5, char);
+ d += 5;
+ while (str < str_end) {
+ char hex_string[4];
+ my_snprintf(hex_string, sizeof(hex_string),
+ "%02X.", (U8) *str);
+ Copy(hex_string, d, 3, char);
+ d += 3;
+ str++;
+ }
+ d--; /* We will overwrite below the final
+ dot with a right brace */
+ }
+ else {
+ STRLEN char_length; /* cur char's byte length */
+
+ /* and the number of bytes after this is
+ * translated into hex digits */
+ STRLEN output_length;
+
+ /* 2 hex per byte; 2 chars for '\N'; 2 chars
+ * for max('U+', '.'); and 1 for NUL */
+ char hex_string[2 * UTF8_MAXBYTES + 5];
+
+ /* Get the first character of the result. */
+ U32 uv = utf8n_to_uvuni((U8 *) str,
+ len,
+ &char_length,
+ UTF8_ALLOW_ANYUV);
+ /* Convert first code point to hex, including
+ * the boiler plate before it. For all these,
+ * we convert to native format so that
+ * downstream code can continue to assume the
+ * input is native */
+ output_length =
+ my_snprintf(hex_string, sizeof(hex_string),
+ "\\N{U+%X",
+ (unsigned int) UNI_TO_NATIVE(uv));
+
+ /* Make sure there is enough space to hold it */
+ d = off + SvGROW(sv, off
+ + output_length
+ + (STRLEN)(send - e)
+ + 2); /* '}' + NUL */
+ /* And output it */
+ Copy(hex_string, d, output_length, char);
+ d += output_length;
+
+ /* For each subsequent character, append dot and
+ * its ordinal in hex */
+ while ((str += char_length) < str_end) {
+ const STRLEN off = d - SvPVX_const(sv);
+ U32 uv = utf8n_to_uvuni((U8 *) str,
+ str_end - str,
+ &char_length,
+ UTF8_ALLOW_ANYUV);
+ output_length =
+ my_snprintf(hex_string,
+ sizeof(hex_string),
+ ".%X",
+ (unsigned int) UNI_TO_NATIVE(uv));
+
+ d = off + SvGROW(sv, off
+ + output_length
+ + (STRLEN)(send - e)
+ + 2); /* '}' + NUL */
+ Copy(hex_string, d, output_length, char);
+ d += output_length;
+ }
}
*d++ = '}'; /* Done. Add the trailing brace */
Copy(str, d, len, char);
d += len;
}
+
SvREFCNT_dec(res);
- /* Deprecate non-approved name syntax */
- if (ckWARN_d(WARN_DEPRECATED)) {
- bool problematic = FALSE;
- char* i = s;
-
- /* For non-ut8 input, look to see that the first
- * character is an alpha, then loop through the rest
- * checking that each is a continuation */
- if (! this_utf8) {
- if (! isALPHAU(*i)) problematic = TRUE;
- else for (i = s + 1; i < e; i++) {
- if (isCHARNAME_CONT(*i)) continue;
- problematic = TRUE;
- break;
- }
- }
- else {
- /* Similarly for utf8. For invariants can check
- * directly. We accept anything above the latin1
- * range because it is immaterial to Perl if it is
- * correct or not, and is expensive to check. But
- * it is fairly easy in the latin1 range to convert
- * the variants into a single character and check
- * those */
- if (UTF8_IS_INVARIANT(*i)) {
- if (! isALPHAU(*i)) problematic = TRUE;
- } else if (UTF8_IS_DOWNGRADEABLE_START(*i)) {
- if (! isALPHAU(UNI_TO_NATIVE(TWO_BYTE_UTF8_TO_UNI(*i,
- *(i+1)))))
- {
- problematic = TRUE;
- }
- }
- if (! problematic) for (i = s + UTF8SKIP(s);
- i < e;
- i+= UTF8SKIP(i))
- {
- if (UTF8_IS_INVARIANT(*i)) {
- if (isCHARNAME_CONT(*i)) continue;
- } else if (! UTF8_IS_DOWNGRADEABLE_START(*i)) {
- continue;
- } else if (isCHARNAME_CONT(
- UNI_TO_NATIVE(
- TWO_BYTE_UTF8_TO_UNI(*i, *(i+1)))))
- {
- continue;
- }
- problematic = TRUE;
- break;
- }
- }
- if (problematic) {
- /* The e-i passed to the final %.*s makes sure that
- * should the trailing NUL be missing that this
- * print won't run off the end of the string */
- Perl_warner(aTHX_ packWARN(WARN_DEPRECATED),
- "Deprecated character in \\N{...}; marked by <-- HERE in \\N{%.*s<-- HERE %.*s",
- (int)(i - s + 1), s, (int)(e - i), i + 1);
- }
- }
} /* End \N{NAME} */
#ifdef EBCDIC
if (!dorange)
/* return the substring (via pl_yylval) only if we parsed anything */
if (s > PL_bufptr) {
+ SvREFCNT_inc_simple_void_NN(sv);
if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) {
const char *const key = PL_lex_inpat ? "qr" : "q";
const STRLEN keylen = PL_lex_inpat ? 2 : 1;
type, typelen);
}
pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
- } else
- SvREFCNT_dec(sv);
+ }
+ LEAVE_with_name("scan_const");
return s;
}
/* This is the one truly awful dwimmer necessary to conflate C and sed. */
STATIC int
-S_intuit_more(pTHX_ register char *s)
+S_intuit_more(pTHX_ char *s)
{
dVAR;
/* In a pattern, so maybe we have {n,m}. */
if (*s == '{') {
- if (regcurly(s)) {
+ if (regcurly(s, FALSE)) {
return FALSE;
}
return TRUE;
return FALSE;
else {
/* this is terrifying, and it works */
- int weight = 2; /* let's weigh the evidence */
+ int weight;
char seen[256];
- unsigned char un_char = 255, last_un_char;
const char * const send = strchr(s,']');
+ unsigned char un_char, last_un_char;
char tmpbuf[sizeof PL_tokenbuf * 4];
if (!send) /* has to be an expression */
return TRUE;
+ weight = 2; /* let's weigh the evidence */
- Zero(seen,256,char);
if (*s == '$')
weight -= 3;
else if (isDIGIT(*s)) {
else
weight -= 100;
}
+ Zero(seen,256,char);
+ un_char = 255;
for (; s < send; s++) {
last_un_char = un_char;
un_char = (unsigned char)*s;
case '&':
case '$':
weight -= seen[un_char] * 10;
- if (isALNUM_lazy_if(s+1,UTF)) {
+ if (isWORDCHAR_lazy_if(s+1,UTF)) {
int len;
scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
len = (int)strlen(tmpbuf);
weight -= 5; /* cope with negative subscript */
break;
default:
- if (!isALNUM(last_un_char)
+ if (!isWORDCHAR(last_un_char)
&& !(last_un_char == '$' || last_un_char == '@'
|| last_un_char == '&')
&& isALPHA(*s) && s[1] && isALPHA(s[1])) {
}
STATIC char *
-S_filter_gets(pTHX_ register SV *sv, STRLEN append)
+S_filter_gets(pTHX_ SV *sv, STRLEN append)
{
dVAR;
case FUNC0SUB:
case UNIOPSUB:
case LSTOPSUB:
- case LABEL:
if (pl_yylval.opval)
append_madprops(PL_thismad, pl_yylval.opval, 0);
PL_thismad = 0;
}
break;
+ /* pval */
+ case LABEL:
+ break;
+
case ']':
case '}':
if (PL_faketokens)
stitching them into a tree.
Returns:
- PRIVATEREF
+ The type of the next token
Structure:
- if read an identifier
- if we're in a my declaration
- croak if they tried to say my($foo::bar)
- build the ops for a my() declaration
- if it's an access to a my() variable
- are we in a sort block?
- croak if my($a); $a <=> $b
- build ops for access to a my() variable
- if in a dq string, and they've said @foo and we can't find @foo
- croak
- build ops for a bareword
- if we already built the token before, use it.
+ Switch based on the current state:
+ - if we already built the token before, use it
+ - if we have a case modifier in a string, deal with that
+ - handle other cases of interpolation inside a string
+ - scan the next line if we are inside a format
+ In the normal state switch on the next character:
+ - default:
+ if alphabetic, go to key lookup
+ unrecoginized character - croak
+ - 0/4/26: handle end-of-line or EOF
+ - cases for whitespace
+ - \n and #: handle comments and line numbers
+ - various operators, brackets and sigils
+ - numbers
+ - quotes
+ - 'v': vstrings (or go to key lookup)
+ - 'x' repetition operator (or go to key lookup)
+ - other ASCII alphanumerics (key lookup begins here):
+ word before => ?
+ keyword plugin
+ scan built-in keyword (but do nothing with it yet)
+ check for statement label
+ check for lexical subs
+ goto just_a_word if there is one
+ see whether built-in keyword is overridden
+ switch on keyword number:
+ - default: just_a_word:
+ not a built-in keyword; handle bareword lookup
+ disambiguate between method and sub call
+ fall back to bareword
+ - cases for built-in keywords
*/
PL_lex_allbrackets--;
next_type &= 0xffff;
}
- if (S_is_opval_token(next_type) && pl_yylval.opval)
- pl_yylval.opval->op_savefree = 0; /* release */
return REPORT(next_type == 'p' ? pending_ident() : next_type);
}
#ifdef PERL_MAD
while (PL_bufptr != PL_bufend &&
PL_bufptr[0] == '\\' && PL_bufptr[1] == 'E') {
- if (!PL_thiswhite)
+ if (PL_madskills) {
+ if (!PL_thiswhite)
PL_thiswhite = newSVpvs("");
- sv_catpvn(PL_thiswhite, PL_bufptr, 2);
+ sv_catpvn(PL_thiswhite, PL_bufptr, 2);
+ }
PL_bufptr += 2;
}
#else
s = PL_bufptr + 1;
if (s[1] == '\\' && s[2] == 'E') {
#ifdef PERL_MAD
- if (!PL_thiswhite)
+ if (PL_madskills) {
+ if (!PL_thiswhite)
PL_thiswhite = newSVpvs("");
- sv_catpvn(PL_thiswhite, PL_bufptr, 4);
+ sv_catpvn(PL_thiswhite, PL_bufptr, 4);
+ }
#endif
PL_bufptr = s + 3;
PL_lex_state = LEX_INTERPCONCAT;
#endif
switch (*s) {
default:
- if (isIDFIRST_lazy_if(s,UTF))
+ if (UTF ? isIDFIRST_utf8((U8*)s) : isALNUMC(*s))
goto keylookup;
{
SV *dsv = newSVpvs_flags("", SVs_TEMP);
case ' ': case '\t': case '\f': case 013:
#ifdef PERL_MAD
PL_realtokenstart = -1;
- if (!PL_thiswhite)
+ if (PL_madskills) {
+ if (!PL_thiswhite)
PL_thiswhite = newSVpvs("");
- sv_catpvn(PL_thiswhite, s, 1);
+ sv_catpvn(PL_thiswhite, s, 1);
+ }
#endif
s++;
goto retry;
}
goto retry;
case '-':
- if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
+ if (s[1] && isALPHA(s[1]) && !isWORDCHAR(s[2])) {
I32 ftst = 0;
char tmp;
}
sv = newSVpvn_flags(s, len, UTF ? SVf_UTF8 : 0);
if (*d == '(') {
- d = scan_str(d,TRUE,TRUE,FALSE);
+ d = scan_str(d,TRUE,TRUE,FALSE, FALSE);
if (!d) {
/* MUST advance bufptr here to avoid bogus
"at end of line" context messages from yyerror().
}
else if (*s == 'q') {
if (++t < PL_bufend
- && (!isALNUM(*t)
+ && (!isWORDCHAR(*t)
|| ((*t == 'q' || *t == 'x') && ++t < PL_bufend
- && !isALNUM(*t))))
+ && !isWORDCHAR(*t))))
{
/* skip q//-like construct */
const char *tmps;
}
else
/* skip plain q word */
- while (t < PL_bufend && isALNUM_lazy_if(t,UTF))
+ while (t < PL_bufend && isWORDCHAR_lazy_if(t,UTF))
t += UTF8SKIP(t);
}
- else if (isALNUM_lazy_if(t,UTF)) {
+ else if (isWORDCHAR_lazy_if(t,UTF)) {
t += UTF8SKIP(t);
- while (t < PL_bufend && isALNUM_lazy_if(t,UTF))
+ while (t < PL_bufend && isWORDCHAR_lazy_if(t,UTF))
t += UTF8SKIP(t);
}
while (t < PL_bufend && isSPACE(*t))
force_next(formbrack ? '.' : '}');
if (formbrack) LEAVE;
#ifdef PERL_MAD
- if (!PL_thistoken)
+ if (PL_madskills && !PL_thistoken)
PL_thistoken = newSVpvs("");
#endif
if (formbrack == 2) { /* means . where arguments were expected */
if (*t == '/' || *t == '?' ||
((*t == 'm' || *t == 's' || *t == 'y')
- && !isALNUM(t[1])) ||
- (*t == 't' && t[1] == 'r' && !isALNUM(t[2])))
+ && !isWORDCHAR(t[1])) ||
+ (*t == 't' && t[1] == 'r' && !isWORDCHAR(t[2])))
Perl_warner(aTHX_ packWARN(WARN_SYNTAX),
"!=~ should be !~");
}
if (ckWARN(WARN_SYNTAX)) {
char *t = s+1;
- while (isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$')
+ while (isSPACE(*t) || isWORDCHAR_lazy_if(t,UTF) || *t == '$')
t++;
if (*t++ == ',') {
PL_bufptr = PEEKSPACE(PL_bufptr); /* XXX can realloc */
if (*s == '[' || *s == '{') {
if (ckWARN(WARN_SYNTAX)) {
const char *t = s + 1;
- while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t)))
+ while (*t && (isWORDCHAR_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t)))
t += UTF ? UTF8SKIP(t) : 1;
if (*t == '}' || *t == ']') {
t++;
if (PL_oldoldbufptr == PL_last_uni
&& (*PL_last_uni != 's' || s - PL_last_uni < 5
|| memNE(PL_last_uni, "study", 5)
- || isALNUM_lazy_if(PL_last_uni+5,UTF)
+ || isWORDCHAR_lazy_if(PL_last_uni+5,UTF)
))
check_uni();
if (*s == '?')
TERM(THING);
case '\'':
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
DEBUG_T( { printbuf("### Saw string before %s\n", s); } );
if (PL_expect == XOPERATOR) {
if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) {
TERM(sublex_start());
case '"':
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
DEBUG_T( { printbuf("### Saw string before %s\n", s); } );
if (PL_expect == XOPERATOR) {
if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) {
TERM(sublex_start());
case '`':
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
DEBUG_T( { printbuf("### Saw backtick string before %s\n", s); } );
if (PL_expect == XOPERATOR)
no_op("Backticks",s);
if (!anydelim && PL_expect == XSTATE
&& d < PL_bufend && *d == ':' && *(d + 1) != ':') {
s = d + 1;
- pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0,
- newSVpvn_flags(PL_tokenbuf,
- len, UTF ? SVf_UTF8 : 0));
+ pl_yylval.pval = savepvn(PL_tokenbuf, len+1);
+ pl_yylval.pval[len] = '\0';
+ pl_yylval.pval[len+1] = UTF ? 1 : 0;
CLINE;
TOKEN(LABEL);
}
gv = gv_fetchsv(sv, GV_NOADD_NOINIT | SvUTF8(sv),
SVt_PVCV);
off = 0;
+ if (!gv) {
+ sv_free(sv);
+ sv = NULL;
+ goto just_a_word;
+ }
}
else {
rv2cv_op = newOP(OP_PADANY, 0);
"Experimental \"%s\" subs not enabled",
tmp == KEY_my ? "my" :
tmp == KEY_state ? "state" : "our");
+ Perl_ck_warner_d(aTHX_
+ packWARN(WARN_EXPERIMENTAL__LEXICAL_SUBS),
+ "The lexical_subs feature is experimental");
goto really_sub;
}
PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len);
case KEY_open:
s = SKIPSPACE1(s);
if (isIDFIRST_lazy_if(s,UTF)) {
- const char *t;
- for (d = s; isALNUM_lazy_if(d,UTF);) {
- d += UTF ? UTF8SKIP(d) : 1;
- if (UTF) {
- while (UTF8_IS_CONTINUED(*d) && is_utf8_mark((U8*)d)) {
- d += UTF ? UTF8SKIP(d) : 1;
- }
- }
- }
+ const char *t;
+ d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE,
+ &len);
for (t=d; isSPACE(*t);)
t++;
if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE)
LOP(OP_PIPE_OP,XTERM);
case KEY_q:
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s)
missingterm(NULL);
pl_yylval.ival = OP_CONST;
case KEY_qw: {
OP *words = NULL;
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s)
missingterm(NULL);
PL_expect = XOPERATOR;
}
case KEY_qq:
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s)
missingterm(NULL);
pl_yylval.ival = OP_STRINGIFY;
TERM(sublex_start());
case KEY_qx:
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s)
missingterm(NULL);
readpipe_override();
SV *tmpwhite = 0;
char *tstart = SvPVX(PL_linestr) + PL_realtokenstart;
- SV *subtoken = newSVpvn_flags(tstart, s - tstart, SvUTF8(PL_linestr));
+ SV *subtoken = PL_madskills
+ ? newSVpvn_flags(tstart, s - tstart, SvUTF8(PL_linestr))
+ : NULL;
PL_thistoken = 0;
d = s;
const bool warnillegalproto = ckWARN(WARN_ILLEGALPROTO);
STRLEN tmplen;
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s)
Perl_croak(aTHX_ "Prototype not terminated");
/* strip spaces and check for bad characters */
#pragma segment Main
#endif
+/*
+ S_pending_ident
+
+ Looks up an identifier in the pad or in a package
+
+ Returns:
+ PRIVATEREF if this is a lexical name.
+ WORD if this belongs to a package.
+
+ Structure:
+ if we're in a my declaration
+ croak if they tried to say my($foo::bar)
+ build the ops for a my() declaration
+ if it's an access to a my() variable
+ build ops for access to a my() variable
+ if in a dq string, and they've said @foo and we can't find @foo
+ warn
+ build ops for a bareword
+*/
+
static int
S_pending_ident(pTHX)
{
if (isIDFIRST_lazy_if(s,UTF)) {
const char * const w = s;
s += UTF ? UTF8SKIP(s) : 1;
- while (isALNUM_lazy_if(s,UTF))
+ while (isWORDCHAR_lazy_if(s,UTF))
s += UTF ? UTF8SKIP(s) : 1;
while (s < PL_bufend && isSPACE(*s))
s++;
}
}
-/* Either returns sv, or mortalizes sv and returns a new SV*.
+/* Either returns sv, or mortalizes/frees sv and returns a new SV*.
Best used as sv=new_constant(..., sv, ...).
If s, pv are NULL, calls subroutine with one argument,
- and type is used with error messages only. */
+ and <type> is used with error messages only.
+ <type> is assumed to be well formed UTF-8 */
STATIC SV *
S_new_constant(pTHX_ const char *s, STRLEN len, const char *key, STRLEN keylen,
dVAR; dSP;
HV * table = GvHV(PL_hintgv); /* ^H */
SV *res;
+ SV *errsv = NULL;
SV **cvp;
SV *cv, *typesv;
const char *why1 = "", *why2 = "", *why3 = "";
PERL_ARGS_ASSERT_NEW_CONSTANT;
+ /* We assume that this is true: */
+ if (*key == 'c') { assert (strEQ(key, "charnames")); }
+ assert(type || s);
/* charnames doesn't work well if there have been errors found */
- if (PL_error_count > 0 && strEQ(key,"charnames"))
+ if (PL_error_count > 0 && *key == 'c')
+ {
+ SvREFCNT_dec_NN(sv);
return &PL_sv_undef;
+ }
+ sv_2mortal(sv); /* Parent created it permanently */
if (!table
|| ! (PL_hints & HINT_LOCALIZE_HH)
|| ! (cvp = hv_fetch(table, key, keylen, FALSE))
|| ! SvOK(*cvp))
{
- SV *msg;
+ char *msg;
/* Here haven't found what we're looking for. If it is charnames,
* perhaps it needs to be loaded. Try doing that before giving up */
- if (strEQ(key,"charnames")) {
+ if (*key == 'c') {
Perl_load_module(aTHX_
0,
newSVpvs("_charnames"),
}
}
if (!table || !(PL_hints & HINT_LOCALIZE_HH)) {
- msg = Perl_newSVpvf(aTHX_
- "Constant(%s) unknown", (type ? type: "undef"));
+ msg = Perl_form(aTHX_
+ "Constant(%.*s) unknown",
+ (int)(type ? typelen : len),
+ (type ? type: s));
}
else {
- why1 = "$^H{";
- why2 = key;
- why3 = "} is not defined";
- report:
- msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s",
- (type ? type: "undef"), why1, why2, why3);
- }
- yyerror(SvPVX_const(msg));
- SvREFCNT_dec(msg);
- return sv;
+ why1 = "$^H{";
+ why2 = key;
+ why3 = "} is not defined";
+ report:
+ if (*key == 'c') {
+ msg = Perl_form(aTHX_
+ /* The +3 is for '\N{'; -4 for that, plus '}' */
+ "Unknown charname '%.*s'", (int)typelen - 4, type + 3
+ );
+ }
+ else {
+ msg = Perl_form(aTHX_ "Constant(%.*s): %s%s%s",
+ (int)(type ? typelen : len),
+ (type ? type: s), why1, why2, why3);
+ }
+ }
+ yyerror_pv(msg, UTF ? SVf_UTF8 : 0);
+ return SvREFCNT_inc_simple_NN(sv);
}
now_ok:
- sv_2mortal(sv); /* Parent created it permanently */
cv = *cvp;
if (!pv && s)
pv = newSVpvn_flags(s, len, SVs_TEMP);
SPAGAIN ;
/* Check the eval first */
- if (!PL_in_eval && SvTRUE(ERRSV)) {
- sv_catpvs(ERRSV, "Propagated");
- yyerror(SvPV_nolen_const(ERRSV)); /* Duplicates the message inside eval */
+ if (!PL_in_eval && ((errsv = ERRSV), SvTRUE_NN(errsv))) {
+ STRLEN errlen;
+ const char * errstr;
+ sv_catpvs(errsv, "Propagated");
+ errstr = SvPV_const(errsv, errlen);
+ yyerror_pvn(errstr, errlen, 0); /* Duplicates the message inside eval */
(void)POPs;
- res = SvREFCNT_inc_simple(sv);
+ res = SvREFCNT_inc_simple_NN(sv);
}
else {
res = POPs;
- SvREFCNT_inc_simple_void(res);
+ SvREFCNT_inc_simple_void_NN(res);
}
PUTBACK ;
why2 = key;
why3 = "}} did not return a defined value";
sv = res;
+ (void)sv_2mortal(sv);
goto report;
}
return res;
}
+PERL_STATIC_INLINE void
+S_parse_ident(pTHX_ char **s, char **d, char * const e, int allow_package, bool is_utf8) {
+ dVAR;
+ PERL_ARGS_ASSERT_PARSE_IDENT;
+
+ for (;;) {
+ if (*d >= e)
+ Perl_croak(aTHX_ "%s", ident_too_long);
+ if (is_utf8 && isIDFIRST_utf8((U8*)*s)) {
+ /* The UTF-8 case must come first, otherwise things
+ * like c\N{COMBINING TILDE} would start failing, as the
+ * isWORDCHAR_A case below would gobble the 'c' up.
+ */
+
+ char *t = *s + UTF8SKIP(*s);
+ while (isIDCONT_utf8((U8*)t))
+ t += UTF8SKIP(t);
+ if (*d + (t - *s) > e)
+ Perl_croak(aTHX_ "%s", ident_too_long);
+ Copy(*s, *d, t - *s, char);
+ *d += t - *s;
+ *s = t;
+ }
+ else if ( isWORDCHAR_A(**s) ) {
+ do {
+ *(*d)++ = *(*s)++;
+ } while isWORDCHAR_A(**s);
+ }
+ else if (allow_package && **s == '\'' && isIDFIRST_lazy_if(*s+1,is_utf8)) {
+ *(*d)++ = ':';
+ *(*d)++ = ':';
+ (*s)++;
+ }
+ else if (allow_package && **s == ':' && (*s)[1] == ':'
+ /* Disallow things like Foo::$bar. For the curious, this is
+ * the code path that triggers the "Bad name after" warning
+ * when looking for barewords.
+ */
+ && (*s)[2] != '$') {
+ *(*d)++ = *(*s)++;
+ *(*d)++ = *(*s)++;
+ }
+ else
+ break;
+ }
+ return;
+}
+
/* Returns a NUL terminated string, with the length of the string written to
*slp
*/
STATIC char *
-S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp)
+S_scan_word(pTHX_ char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp)
{
dVAR;
char *d = dest;
char * const e = d + destlen - 3; /* two-character token, ending NUL */
+ bool is_utf8 = cBOOL(UTF);
PERL_ARGS_ASSERT_SCAN_WORD;
- for (;;) {
- if (d >= e)
- Perl_croak(aTHX_ ident_too_long);
- if (isALNUM(*s) || (!UTF && isALNUMC_L1(*s))) /* UTF handled below */
- *d++ = *s++;
- else if (allow_package && (*s == '\'') && isIDFIRST_lazy_if(s+1,UTF)) {
- *d++ = ':';
- *d++ = ':';
- s++;
- }
- else if (allow_package && (s[0] == ':') && (s[1] == ':') && (s[2] != '$')) {
- *d++ = *s++;
- *d++ = *s++;
- }
- else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) {
- char *t = s + UTF8SKIP(s);
- size_t len;
- while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t))
- t += UTF8SKIP(t);
- len = t - s;
- if (d + len > e)
- Perl_croak(aTHX_ ident_too_long);
- Copy(s, d, len, char);
- d += len;
- s = t;
- }
- else {
- *d = '\0';
- *slp = d - dest;
- return s;
- }
- }
+ parse_ident(&s, &d, e, allow_package, is_utf8);
+ *d = '\0';
+ *slp = d - dest;
+ return s;
}
STATIC char *
-S_scan_ident(pTHX_ register char *s, register const char *send, char *dest, STRLEN destlen, I32 ck_uni)
+S_scan_ident(pTHX_ char *s, const char *send, char *dest, STRLEN destlen, I32 ck_uni)
{
dVAR;
char *bracket = NULL;
char funny = *s++;
char *d = dest;
char * const e = d + destlen - 3; /* two-character token, ending NUL */
+ bool is_utf8 = cBOOL(UTF);
PERL_ARGS_ASSERT_SCAN_IDENT;
if (isDIGIT(*s)) {
while (isDIGIT(*s)) {
if (d >= e)
- Perl_croak(aTHX_ ident_too_long);
+ Perl_croak(aTHX_ "%s", ident_too_long);
*d++ = *s++;
}
}
else {
- for (;;) {
- if (d >= e)
- Perl_croak(aTHX_ ident_too_long);
- if (isALNUM(*s)) /* UTF handled below */
- *d++ = *s++;
- else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) {
- *d++ = ':';
- *d++ = ':';
- s++;
- }
- else if (*s == ':' && s[1] == ':') {
- *d++ = *s++;
- *d++ = *s++;
- }
- else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) {
- char *t = s + UTF8SKIP(s);
- while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t))
- t += UTF8SKIP(t);
- if (d + (t - s) > e)
- Perl_croak(aTHX_ ident_too_long);
- Copy(s, d, t - s, char);
- d += t - s;
- s = t;
- }
- else
- break;
- }
+ parse_ident(&s, &d, e, 1, is_utf8);
}
*d = '\0';
d = dest;
return s;
}
if (*s == '$' && s[1] &&
- (isALNUM_lazy_if(s+1,UTF) || s[1] == '$' || s[1] == '{' || strnEQ(s+1,"::",2)) )
+ (isIDFIRST_lazy_if(s+1,is_utf8)
+ || isDIGIT_A((U8)s[1])
+ || s[1] == '$'
+ || s[1] == '{'
+ || strnEQ(s+1,"::",2)) )
{
return s;
}
bracket = s;
s++;
}
- if (s < send) {
- if (UTF) {
+
+#define VALID_LEN_ONE_IDENT(d, u) (isPUNCT_A((U8)*(d)) \
+ || isCNTRL_A((U8)*(d)) \
+ || isDIGIT_A((U8)*(d)) \
+ || (!(u) && !UTF8_IS_INVARIANT((U8)*(d))))
+ if (s < send
+ && (isIDFIRST_lazy_if(s, is_utf8) || VALID_LEN_ONE_IDENT(s, is_utf8)))
+ {
+ if (is_utf8) {
const STRLEN skip = UTF8SKIP(s);
STRLEN i;
d[skip] = '\0';
}
}
}
- if (isIDFIRST_lazy_if(d,UTF)) {
- d += UTF8SKIP(d);
- if (UTF) {
- char *end = s;
- while ((end < send && isALNUM_lazy_if(end,UTF)) || *end == ':') {
- end += UTF8SKIP(end);
- while (end < send && UTF8_IS_CONTINUED(*end) && is_utf8_mark((U8*)end))
- end += UTF8SKIP(end);
- }
- Copy(s, d, end - s, char);
- d += end - s;
- s = end;
- }
- else {
- while ((isALNUM(*s) || *s == ':') && d < e)
- *d++ = *s++;
- if (d >= e)
- Perl_croak(aTHX_ ident_too_long);
- }
+ if (isIDFIRST_lazy_if(d,is_utf8)) {
+ d += is_utf8 ? UTF8SKIP(d) : 1;
+ parse_ident(&s, &d, e, 1, is_utf8);
*d = '\0';
while (s < send && SPACE_OR_TAB(*s))
s++;
}
/* Handle extended ${^Foo} variables
* 1999-02-27 mjd-perl-patch@plover.com */
- else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */
- && isALNUM(*s))
+ else if (!isWORDCHAR(*d) && !isPRINT(*d) /* isCTRL(d) */
+ && isWORDCHAR(*s))
{
d++;
- while (isALNUM(*s) && d < e) {
+ while (isWORDCHAR(*s) && d < e) {
*d++ = *s++;
}
if (d >= e)
- Perl_croak(aTHX_ ident_too_long);
+ Perl_croak(aTHX_ "%s", ident_too_long);
*d = '\0';
}
if (*s == '}') {
if (PL_lex_state == LEX_NORMAL) {
if (ckWARN(WARN_AMBIGUOUS) &&
(keyword(dest, d - dest, 0)
- || get_cvn_flags(dest, d - dest, UTF ? SVf_UTF8 : 0)))
+ || get_cvn_flags(dest, d - dest, is_utf8 ? SVf_UTF8 : 0)))
{
SV *tmp = newSVpvn_flags( dest, d - dest,
- SVs_TEMP | (UTF ? SVf_UTF8 : 0) );
+ SVs_TEMP | (is_utf8 ? SVf_UTF8 : 0) );
if (funny == '#')
funny = '@';
Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS),
STRLEN charlen = UTF ? UTF8SKIP(*s) : 1;
if ( charlen != 1 || ! strchr(valid_flags, c) ) {
- if (isALNUM_lazy_if(*s, UTF)) {
+ if (isWORDCHAR_lazy_if(*s, UTF)) {
yyerror_pv(Perl_form(aTHX_ "Unknown regexp modifier \"/%.*s\"", (int)charlen, *s),
UTF ? SVf_UTF8 : 0);
(*s) += charlen;
{
dVAR;
PMOP *pm;
- char *s = scan_str(start,!!PL_madskills,FALSE, PL_reg_state.re_reparsing);
+ char *s = scan_str(start,!!PL_madskills,FALSE, PL_reg_state.re_reparsing,
+ TRUE /* look for escaped bracketed metas */ );
const char * const valid_flags =
(const char *)((type == OP_QR) ? QR_PAT_MODS : M_PAT_MODS);
char charset = '\0'; /* character set modifier */
pl_yylval.ival = OP_NULL;
- s = scan_str(start,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(start,!!PL_madskills,FALSE,FALSE,
+ TRUE /* look for escaped bracketed metas */ );
if (!s)
Perl_croak(aTHX_ "Substitution pattern not terminated");
#endif
first_start = PL_multi_start;
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s) {
if (PL_lex_stuff) {
SvREFCNT_dec(PL_lex_stuff);
pl_yylval.ival = OP_NULL;
- s = scan_str(start,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(start,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s)
Perl_croak(aTHX_ "Transliteration pattern not terminated");
}
#endif
- s = scan_str(s,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s) {
if (PL_lex_stuff) {
SvREFCNT_dec(PL_lex_stuff);
*/
STATIC char *
-S_scan_heredoc(pTHX_ register char *s)
+S_scan_heredoc(pTHX_ char *s)
{
dVAR;
I32 op_type = OP_SCALAR;
s++, term = '\'';
else
term = '"';
- if (!isALNUM_lazy_if(s,UTF))
+ if (!isWORDCHAR_lazy_if(s,UTF))
deprecate("bare << to mean <<\"\"");
- for (; isALNUM_lazy_if(s,UTF); s++) {
+ for (; isWORDCHAR_lazy_if(s,UTF); s++) {
if (d < e)
*d++ = *s;
}
bufend - shared->re_eval_start);
shared->re_eval_start -= s-d;
}
- if (CxTYPE(cx) == CXt_EVAL && CxOLD_OP_TYPE(cx) == OP_ENTEREVAL
- && cx->blk_eval.cur_text == linestr) {
+ if (cxstack_ix >= 0 && CxTYPE(cx) == CXt_EVAL &&
+ CxOLD_OP_TYPE(cx) == OP_ENTEREVAL &&
+ cx->blk_eval.cur_text == linestr)
+ {
cx->blk_eval.cur_text = newSVsv(linestr);
SvSCREAM_on(cx->blk_eval.cur_text);
}
if (*d == '$' && d[1]) d++;
/* allow <Pkg'VALUE> or <Pkg::VALUE> */
- while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':'))
+ while (*d && (isWORDCHAR_lazy_if(d,UTF) || *d == '\'' || *d == ':'))
d += UTF ? UTF8SKIP(d) : 1;
/* If we've tried to read what we allow filehandles to look like, and
if (d - PL_tokenbuf != len) {
pl_yylval.ival = OP_GLOB;
- s = scan_str(start,!!PL_madskills,FALSE,FALSE);
+ s = scan_str(start,!!PL_madskills,FALSE,FALSE, FALSE);
if (!s)
Perl_croak(aTHX_ "Glob not terminated");
return s;
*/
STATIC char *
-S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims, int re_reparse)
+S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims, int re_reparse,
+ bool deprecate_escaped_meta /* Should we issue a deprecation warning
+ for certain paired metacharacters that
+ appear escaped within it */
+ )
{
dVAR;
- SV *sv; /* scalar value: string */
- const char *tmps; /* temp string, used for delimiter matching */
+ SV *sv; /* scalar value: string */
+ const char *tmps; /* temp string, used for delimiter matching */
char *s = start; /* current position in the buffer */
char term; /* terminating character */
char *to; /* current position in the sv's data */
- I32 brackets = 1; /* bracket nesting level */
- bool has_utf8 = FALSE; /* is there any utf8 content? */
- I32 termcode; /* terminating char. code */
- U8 termstr[UTF8_MAXBYTES]; /* terminating string */
- STRLEN termlen; /* length of terminating string */
- int last_off = 0; /* last position for nesting bracket */
+ I32 brackets = 1; /* bracket nesting level */
+ bool has_utf8 = FALSE; /* is there any utf8 content? */
+ I32 termcode; /* terminating char. code */
+ U8 termstr[UTF8_MAXBYTES]; /* terminating string */
+ STRLEN termlen; /* length of terminating string */
+ int last_off = 0; /* last position for nesting bracket */
+ char *escaped_open = NULL;
#ifdef PERL_MAD
int stuffstart;
char *tstart;
PL_multi_close = term;
+ /* A warning is raised if the input parameter requires it for escaped (by a
+ * backslash) paired metacharacters {} [] and () when the delimiters are
+ * those same characters, and the backslash is ineffective. This doesn't
+ * happen for <>, as they aren't metas. */
+ if (deprecate_escaped_meta
+ && (PL_multi_open == PL_multi_close
+ || ! ckWARN_d(WARN_DEPRECATED)
+ || PL_multi_open == '<'))
+ {
+ deprecate_escaped_meta = FALSE;
+ }
+
/* create a new SV to hold the contents. 79 is the SV's initial length.
What a random number. */
sv = newSV_type(SVt_PVIV);
s += termlen;
#ifdef PERL_MAD
tstart = SvPVX(PL_linestr) + stuffstart;
- if (!PL_thisopen && !keep_delims) {
+ if (PL_madskills && !PL_thisopen && !keep_delims) {
PL_thisopen = newSVpvn(tstart, s - tstart);
stuffstart = s - SvPVX(PL_linestr);
}
if (*s == '\\' && s+1 < PL_bufend) {
if (!keep_quoted &&
((s[1] == PL_multi_open) || (s[1] == PL_multi_close)))
+ {
s++;
+
+ /* Here, 'deprecate_escaped_meta' is true iff the
+ * delimiters are paired metacharacters, and 's' points
+ * to an occurrence of one of them within the string,
+ * which was preceded by a backslash. If this is a
+ * context where the delimiter is also a metacharacter,
+ * the backslash is useless, and deprecated. () and []
+ * are meta in any context. {} are meta only when
+ * appearing in a quantifier or in things like '\p{'.
+ * They also aren't meta unless there is a matching
+ * closed, escaped char later on within the string.
+ * If 's' points to an open, set a flag; if to a close,
+ * test that flag, and raise a warning if it was set */
+
+ if (deprecate_escaped_meta) {
+ if (*s == PL_multi_open) {
+ if (*s != '{') {
+ escaped_open = s;
+ }
+ else if (regcurly(s,
+ TRUE /* Look for a closing
+ '\}' */)
+ || (s - start > 2 /* Look for e.g.
+ '\x{' */
+ && _generic_isCC(*(s-2), _CC_BACKSLASH_FOO_LBRACE_IS_META)))
+ {
+ escaped_open = s;
+ }
+ }
+ else if (escaped_open) {
+ Perl_warner(aTHX_ packWARN(WARN_DEPRECATED),
+ "Useless use of '\\'; doesn't escape metacharacter '%c'", PL_multi_open);
+ escaped_open = NULL;
+ }
+ }
+ }
else
*to++ = *s++;
}
SV *sv = NULL; /* place to put the converted number */
bool floatit; /* boolean: int or float? */
const char *lastub = NULL; /* position of last underbar */
- static char const number_too_long[] = "Number too long";
+ static const char* const number_too_long = "Number too long";
PERL_ARGS_ASSERT_SCAN_NUM;
else {
/* check for end of fixed-length buffer */
if (d >= e)
- Perl_croak(aTHX_ number_too_long);
+ Perl_croak(aTHX_ "%s", number_too_long);
/* if we're ok, copy the character */
*d++ = *s++;
}
for (; isDIGIT(*s) || *s == '_'; s++) {
/* fixed length buffer check */
if (d >= e)
- Perl_croak(aTHX_ number_too_long);
+ Perl_croak(aTHX_ "%s", number_too_long);
if (*s == '_') {
if (lastub && s == lastub + 1)
Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),
while (isDIGIT(*s) || *s == '_') {
if (isDIGIT(*s)) {
if (d >= e)
- Perl_croak(aTHX_ number_too_long);
+ Perl_croak(aTHX_ "%s", number_too_long);
*d++ = *s++;
}
else {
case 'v':
vstring:
sv = newSV(5); /* preallocate storage space */
+ ENTER_with_name("scan_vstring");
+ SAVEFREESV(sv);
s = scan_vstring(s, PL_bufend, sv);
+ SvREFCNT_inc_simple_void_NN(sv);
+ LEAVE_with_name("scan_vstring");
break;
}
}
STATIC char *
-S_scan_formline(pTHX_ register char *s)
+S_scan_formline(pTHX_ char *s)
{
dVAR;
char *eol;
CvOUTSIDE(PL_compcv) = MUTABLE_CV(SvREFCNT_inc_simple(outsidecv));
CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax;
if (outsidecv && CvPADLIST(outsidecv))
- CvPADLIST(PL_compcv)->xpadl_outid = CvPADLIST(outsidecv)->xpadl_id;
+ CvPADLIST(PL_compcv)->xpadl_outid =
+ PadlistNAMES(CvPADLIST(outsidecv));
return oldsavestack_ix;
}
SV *msg;
SV * const where_sv = newSVpvs_flags("", SVs_TEMP);
int yychar = PL_parser->yychar;
- U32 is_utf8 = flags & SVf_UTF8;
PERL_ARGS_ASSERT_YYERROR_PVN;
else
Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255);
}
- msg = sv_2mortal(newSVpvn_flags(s, len, is_utf8));
+ msg = newSVpvn_flags(s, len, (flags & SVf_UTF8) | SVs_TEMP);
Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ",
OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
if (context)
else
qerror(msg);
if (PL_error_count >= 10) {
- if (PL_in_eval && SvCUR(ERRSV))
+ SV * errsv;
+ if (PL_in_eval && ((errsv = ERRSV), SvCUR(errsv)))
Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n",
- SVfARG(ERRSV), OutCopFILE(PL_curcop));
+ SVfARG(errsv), OutCopFILE(PL_curcop));
else
Perl_croak(aTHX_ "%s has too many errors.\n",
OutCopFILE(PL_curcop));
Function must be called like
- sv = newSV(5);
+ sv = sv_2mortal(newSV(5));
s = scan_vstring(s,e,sv);
where s and e are the start and end of the string.
The sv should already be large enough to store the vstring
passed in, for performance reasons.
+This function may croak if fatal warnings are enabled in the
+calling scope, hence the sv_2mortal in the example (to prevent
+a leak). Make sure to do SvREFCNT_inc afterwards if you use
+sv_2mortal.
+
*/
char *
if (PL_lex_state == LEX_KNOWNEXT) {
PL_parser->yychar = yylex();
if (PL_parser->yychar == LABEL) {
- SV *lsv;
+ char * const lpv = pl_yylval.pval;
+ STRLEN llen = strlen(lpv);
PL_parser->yychar = YYEMPTY;
- lsv = newSV_type(SVt_PV);
- sv_copypv(lsv, cSVOPx(pl_yylval.opval)->op_sv);
- return lsv;
+ return newSVpvn_flags(lpv, llen, lpv[llen+1] ? SVf_UTF8 : 0);
} else {
yyunlex();
goto no_label;
https://perl5.git.perl.org / perl5.git / blobdiff