static char ident_too_long[] = "Identifier too long";
#define UTF (PL_hints & HINT_UTF8)
+/*
+ * Note: we try to be careful never to call the isXXX_utf8() functions
+ * unless we're pretty sure we've seen the beginning of a UTF-8 character
+ * (that is, the two high bits are set). Otherwise we risk loading in the
+ * heavy-duty SWASHINIT and SWASHGET routines unnecessarily.
+ */
+#define isIDFIRST_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \
+ ? isIDFIRST(*(p)) \
+ : isIDFIRST_utf8((U8*)p))
+#define isALNUM_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \
+ ? isALNUM(*(p)) \
+ : isALNUM_utf8((U8*)p))
/* The following are arranged oddly so that the guard on the switch statement
* can get by with a single comparison (if the compiler is smart enough).
#undef ff_next
#endif
+#ifdef USE_PURE_BISON
+YYSTYPE* yylval_pointer = NULL;
+int* yychar_pointer = NULL;
+#ifdef EMBED
+#undef yylval
+#undef yychar
+#endif
+#define yylval (*yylval_pointer)
+#define yychar (*yychar_pointer)
+#define YYLEXPARAM yylval_pointer,yychar_pointer
+#else
+#define YYLEXPARAM
+#endif
+
#include "keywords.h"
#ifdef CLINE
yywarn(form("%s found where operator expected", what));
if (is_first)
warn("\t(Missing semicolon on previous line?)\n");
- else if (PL_oldoldbufptr && isIDFIRST(*PL_oldoldbufptr)) {
+ else if (PL_oldoldbufptr && isIDFIRST_lazy(PL_oldoldbufptr)) {
char *t;
- for (t = PL_oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
+ for (t = PL_oldoldbufptr; *t && (isALNUM_lazy(t) || *t == ':'); t++) ;
if (t < PL_bufptr && isSPACE(*t))
warn("\t(Do you need to predeclare %.*s?)\n",
t - PL_oldoldbufptr, PL_oldoldbufptr);
return;
while (isSPACE(*PL_last_uni))
PL_last_uni++;
- for (s = PL_last_uni; isALNUM(*s) || *s == '-'; s++) ;
+ for (s = PL_last_uni; isALNUM_lazy(s) || *s == '-'; s++) ;
if ((t = strchr(s, '(')) && t < PL_bufptr)
return;
ch = *s;
start = skipspace(start);
s = start;
- if (isIDFIRST(*s) ||
+ if (isIDFIRST_lazy(s) ||
(allow_pack && *s == ':') ||
(allow_initial_tick && *s == '\'') )
{
if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */
PL_lex_state = LEX_INTERPCASEMOD;
- return yylex();
+ return yylex(YYLEXPARAM);
}
/* Is there a right-hand side to take care of? */
count--;
regparse++;
}
- if (*regparse != ')')
+ if (*regparse != ')') {
+ regparse--; /* Leave one char for continuation. */
yyerror("Sequence (?{...}) not terminated or not {}-balanced");
+ }
while (s < regparse)
*d++ = *s++;
}
}
/* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */
- else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
+ else if (*s == '@' && s[1] && (isALNUM_lazy(s+1) || strchr(":'{$", s[1])))
break;
/* check for embedded scalars. only stop if we're sure it's a
if (*s == '{') {
char* e = strchr(s, '}');
- if (!e)
+ if (!e) {
yyerror("Missing right brace on \\x{}");
+ e = s;
+ }
if (!utf) {
dTHR;
if (ckWARN(WARN_UTF8))
case '&':
case '$':
weight -= seen[un_char] * 10;
- if (isALNUM(s[1])) {
+ if (isALNUM_lazy(s+1)) {
scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
weight -= 100;
{ "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
#endif
-EXT int yychar; /* last token */
-
/*
yylex
if we already built the token before, use it.
*/
-int
-yylex(void)
+int yylex
+#ifdef USE_PURE_BISON
+(YYSTYPE* lvalp, int* lcharp)
+#else
+(void)
+#endif
{
dTHR;
register char *s;
GV *gv = Nullgv;
GV **gvp = 0;
+#ifdef USE_PURE_BISON
+ yylval_pointer = lvalp;
+ yychar_pointer = lcharp;
+#endif
+
/* check if there's an identifier for us to look at */
if (PL_pending_ident) {
/* pit holds the identifier we read and pending_ident is reset */
if (PL_bufptr != PL_bufend)
PL_bufptr += 2;
PL_lex_state = LEX_INTERPCONCAT;
- return yylex();
+ return yylex(YYLEXPARAM);
}
else {
s = PL_bufptr + 1;
Aop(OP_CONCAT);
}
else
- return yylex();
+ return yylex(YYLEXPARAM);
}
case LEX_INTERPPUSH:
s = PL_bufptr;
Aop(OP_CONCAT);
}
- return yylex();
+ return yylex(YYLEXPARAM);
case LEX_INTERPENDMAYBE:
if (intuit_more(PL_bufptr)) {
Aop(OP_CONCAT);
else {
PL_bufptr = s;
- return yylex();
+ return yylex(YYLEXPARAM);
}
}
- return yylex();
+ return yylex(YYLEXPARAM);
case LEX_FORMLINE:
PL_lex_state = LEX_NORMAL;
s = scan_formline(PL_bufptr);
retry:
switch (*s) {
default:
- /*
- * Note: we try to be careful never to call the isXXX_utf8() functions unless we're
- * pretty sure we've seen the beginning of a UTF-8 character (that is, the two high
- * bits are set). Otherwise we risk loading in the heavy-duty SWASHINIT and SWASHGET
- * routines unnecessarily. You will see this not just here but throughout this file.
- */
- if (UTF && (*s & 0xc0) == 0x80) {
- if (isIDFIRST_utf8((U8*)s))
- goto keylookup;
- }
+ if (isIDFIRST_lazy(s))
+ goto keylookup;
croak("Unrecognized character \\x%02X", *s & 255);
case 4:
case 26:
if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) {
PL_bufptr = s;
PL_lex_state = LEX_FORMLINE;
- return yylex();
+ return yylex(YYLEXPARAM);
}
goto retry;
case '\r':
if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) {
PL_bufptr = s;
PL_lex_state = LEX_FORMLINE;
- return yylex();
+ return yylex(YYLEXPARAM);
}
}
else {
else if (*s == '>') {
s++;
s = skipspace(s);
- if (isIDFIRST(*s)) {
+ if (isIDFIRST_lazy(s)) {
s = force_word(s,METHOD,FALSE,TRUE,FALSE);
TOKEN(ARROW);
}
while (d < PL_bufend && (*d == ' ' || *d == '\t'))
d++;
}
- if (d < PL_bufend && isIDFIRST(*d)) {
+ if (d < PL_bufend && isIDFIRST_lazy(d)) {
d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1,
FALSE, &len);
while (d < PL_bufend && (*d == ' ' || *d == '\t'))
}
t++;
}
- else if (isALPHA(*s)) {
- for (t++; t < PL_bufend && isALNUM(*t); t++) ;
+ else if (isIDFIRST_lazy(s)) {
+ for (t++; t < PL_bufend && isALNUM_lazy(t); t++) ;
}
while (t < PL_bufend && isSPACE(*t))
t++;
|| (*t == '=' && t[1] == '>')))
OPERATOR(HASHBRACK);
if (PL_expect == XREF)
- PL_expect = XTERM;
+ PL_expect = XSTATE; /* was XTERM, trying XSTATE */
else {
PL_lex_brackstack[PL_lex_brackets-1] = XSTATE;
PL_expect = XSTATE;
if (PL_lex_fakebrack) {
PL_lex_state = LEX_INTERPEND;
PL_bufptr = s;
- return yylex(); /* ignore fake brackets */
+ return yylex(YYLEXPARAM); /* ignore fake brackets */
}
if (*s == '-' && s[1] == '>')
PL_lex_state = LEX_INTERPENDMAYBE;
if (PL_lex_brackets < PL_lex_fakebrack) {
PL_bufptr = s;
PL_lex_fakebrack = 0;
- return yylex(); /* ignore fake brackets */
+ return yylex(YYLEXPARAM); /* ignore fake brackets */
}
force_next('}');
TOKEN(';');
AOPERATOR(ANDAND);
s--;
if (PL_expect == XOPERATOR) {
- if (ckWARN(WARN_SEMICOLON) && isALPHA(*s) && PL_bufptr == PL_linestart) {
+ if (ckWARN(WARN_SEMICOLON) && isIDFIRST_lazy(s) && PL_bufptr == PL_linestart) {
PL_curcop->cop_line--;
warner(WARN_SEMICOLON, warn_nosemi);
PL_curcop->cop_line++;
}
}
- if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:+-", s[2]))) {
+ if (s[1] == '#' && (isIDFIRST_lazy(s+2) || strchr("{$:+-", s[2]))) {
if (PL_expect == XOPERATOR)
no_op("Array length", PL_bufptr);
PL_tokenbuf[0] = '@';
PL_tokenbuf[0] = '@';
if (ckWARN(WARN_SYNTAX)) {
for(t = s + 1;
- isSPACE(*t) || isALNUM(*t) || *t == '$';
+ isSPACE(*t) || isALNUM_lazy(t) || *t == '$';
t++) ;
if (*t++ == ',') {
PL_bufptr = skipspace(PL_bufptr);
char tmpbuf[sizeof PL_tokenbuf];
STRLEN len;
for (t++; isSPACE(*t); t++) ;
- if (isIDFIRST(*t)) {
+ if (isIDFIRST_lazy(t)) {
t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
- if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
+ for (; isSPACE(*t); t++) ;
+ if (*t == ';' && perl_get_cv(tmpbuf, FALSE))
warner(WARN_SYNTAX,
"You need to quote \"%s\"", tmpbuf);
}
PL_expect = XOPERATOR;
else if (strchr("$@\"'`q", *s))
PL_expect = XTERM; /* e.g. print $fh "foo" */
- else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
+ else if (strchr("&*<%", *s) && isIDFIRST_lazy(s+1))
PL_expect = XTERM; /* e.g. print $fh &sub */
- else if (isIDFIRST(*s)) {
+ else if (isIDFIRST_lazy(s)) {
char tmpbuf[sizeof PL_tokenbuf];
scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
if (tmp = keyword(tmpbuf, len)) {
PL_expect = XTERM; /* e.g. print $fh 3 */
else if (*s == '.' && isDIGIT(s[1]))
PL_expect = XTERM; /* e.g. print $fh .3 */
- else if (strchr("/?-+", *s) && !isSPACE(s[1]))
+ else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=')
PL_expect = XTERM; /* e.g. print $fh -1 */
- else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
+ else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=')
PL_expect = XTERM; /* print $fh <<"EOF" */
}
PL_pending_ident = '$';
if (ckWARN(WARN_SYNTAX)) {
if (*s == '[' || *s == '{') {
char *t = s + 1;
- while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
+ while (*t && (isALNUM_lazy(t) || strchr(" \t$#+-'\"", *t)))
t++;
if (*t == '}' || *t == ']') {
t++;
/* Disable warning on "study /blah/" */
if (PL_oldoldbufptr == PL_last_uni
&& (*PL_last_uni != 's' || s - PL_last_uni < 5
- || memNE(PL_last_uni, "study", 5) || isALNUM(PL_last_uni[5])))
+ || memNE(PL_last_uni, "study", 5) || isALNUM_lazy(PL_last_uni+5)))
check_uni();
s = scan_pat(s,OP_MATCH);
TERM(sublex_start());
/* Two barewords in a row may indicate method call. */
- if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
+ if ((isIDFIRST_lazy(s) || *s == '$') && (tmp=intuit_method(s,gv)))
return tmp;
/* If not a declared subroutine, it's an indirect object. */
if (*s == '(') {
CLINE;
if (gv && GvCVu(gv)) {
+ CV *cv;
+ if ((cv = GvCV(gv)) && SvPOK(cv))
+ PL_last_proto = SvPV((SV*)cv, PL_na);
for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
- if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
+ if (*d == ')' && (sv = cv_const_sv(cv))) {
s = d + 1;
goto its_constant;
}
PL_expect = XOPERATOR;
force_next(WORD);
yylval.ival = 0;
+ PL_last_lop_op = OP_ENTERSUB;
TOKEN('&');
}
/* If followed by a bareword, see if it looks like indir obj. */
- if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
+ if ((isIDFIRST_lazy(s) || *s == '$') && (tmp = intuit_method(s,gv)))
return tmp;
/* Not a method, so call it a subroutine (if defined) */
/* Resolve to GV now. */
op_free(yylval.opval);
yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
+ PL_last_lop_op = OP_ENTERSUB;
/* Is there a prototype? */
if (SvPOK(cv)) {
STRLEN len;
PL_last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
PL_last_lop_op != OP_ACCEPT &&
PL_last_lop_op != OP_PIPE_OP &&
- PL_last_lop_op != OP_SOCKPAIR)
+ PL_last_lop_op != OP_SOCKPAIR &&
+ !(PL_last_lop_op == OP_ENTERSUB
+ && PL_last_proto
+ && PL_last_proto[PL_last_proto[0] == ';' ? 1 : 0] == '*'))
{
warn(
"Bareword \"%s\" not allowed while \"strict subs\" in use",
case KEY_foreach:
yylval.ival = PL_curcop->cop_line;
s = skipspace(s);
- if (PL_expect == XSTATE && isIDFIRST(*s)) {
+ if (PL_expect == XSTATE && isIDFIRST_lazy(s)) {
char *p = s;
if ((PL_bufend - p) >= 3 &&
strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
p += 2;
p = skipspace(p);
- if (isIDFIRST(*p))
+ if (isIDFIRST_lazy(p))
croak("Missing $ on loop variable");
}
OPERATOR(FOR);
TERM(sublex_start());
case KEY_map:
- LOP(OP_MAPSTART,XREF);
+ LOP(OP_MAPSTART, XREF);
case KEY_mkdir:
LOP(OP_MKDIR,XTERM);
case KEY_my:
PL_in_my = TRUE;
s = skipspace(s);
- if (isIDFIRST(*s)) {
+ if (isIDFIRST_lazy(s)) {
s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len);
PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE);
if (!PL_in_my_stash) {
case KEY_open:
s = skipspace(s);
- if (isIDFIRST(*s)) {
+ if (isIDFIRST_lazy(s)) {
char *t;
- for (d = s; isALNUM(*d); d++) ;
+ for (d = s; isALNUM_lazy(d); d++) ;
t = skipspace(d);
if (strchr("|&*+-=!?:.", *t))
warn("Precedence problem: open %.*s should be open(%.*s)",
case KEY_require:
*PL_tokenbuf = '\0';
s = force_word(s,WORD,TRUE,TRUE,FALSE);
- if (isIDFIRST(*PL_tokenbuf))
+ if (isIDFIRST_lazy(PL_tokenbuf))
gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE);
else if (*s == '<')
yyerror("<> should be quotes");
really_sub:
s = skipspace(s);
- if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
+ if (isIDFIRST_lazy(s) || *s == '\'' || *s == ':') {
char tmpbuf[sizeof PL_tokenbuf];
PL_expect = XBLOCK;
d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
s++;
while (s < PL_bufend && isSPACE(*s))
s++;
- if (isIDFIRST(*s)) {
+ if (isIDFIRST_lazy(s)) {
w = s++;
- while (isALNUM(*s))
+ while (isALNUM_lazy(s))
s++;
while (s < PL_bufend && isSPACE(*s))
s++;
for (;;) {
if (d >= e)
croak(ident_too_long);
- if (isALNUM(*s))
+ if (isALNUM(*s)) /* UTF handled below */
*d++ = *s++;
- else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
+ else if (*s == '\'' && allow_package && isIDFIRST_lazy(s+1)) {
*d++ = ':';
*d++ = ':';
s++;
*d++ = *s++;
*d++ = *s++;
}
- else if (UTF && (*s & 0xc0) == 0x80 && isALNUM_utf8((U8*)s)) {
+ else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) {
char *t = s + UTF8SKIP(s);
while (*t & 0x80 && is_utf8_mark((U8*)t))
t += UTF8SKIP(t);
for (;;) {
if (d >= e)
croak(ident_too_long);
- if (isALNUM(*s))
+ if (isALNUM(*s)) /* UTF handled below */
*d++ = *s++;
- else if (*s == '\'' && isIDFIRST(s[1])) {
+ else if (*s == '\'' && isIDFIRST_lazy(s+1)) {
*d++ = ':';
*d++ = ':';
s++;
*d++ = *s++;
*d++ = *s++;
}
- else if (UTF && (*s & 0xc0) == 0x80 && isALNUM_utf8((U8*)s)) {
+ else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) {
char *t = s + UTF8SKIP(s);
while (*t & 0x80 && is_utf8_mark((U8*)t))
t += UTF8SKIP(t);
return s;
}
if (*s == '$' && s[1] &&
- (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
+ (isALNUM_lazy(s+1) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
{
return s;
}
}
}
}
- if (isIDFIRST(*d) || (UTF && (*d & 0xc0) == 0x80 && isIDFIRST_utf8((U8*)d))) {
+ if (isIDFIRST_lazy(d)) {
d++;
if (UTF) {
e = s;
- while (e < send && (isALNUM(*e) || ((*e & 0xc0) == 0x80 && isALNUM_utf8((U8*)e)) || *e == ':')) {
+ while (e < send && isALNUM_lazy(e) || *e == ':') {
e += UTF8SKIP(e);
while (e < send && *e & 0x80 && is_utf8_mark((U8*)e))
e += UTF8SKIP(e);
s++, term = '\'';
else
term = '"';
- if (!isALNUM(*s))
+ if (!isALNUM_lazy(s))
deprecate("bare << to mean <<\"\"");
- for (; isALNUM(*s); s++) {
+ for (; isALNUM_lazy(s); s++) {
if (d < e)
*d++ = *s;
}
if (*d == '$' && d[1]) d++;
/* allow <Pkg'VALUE> or <Pkg::VALUE> */
- while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
+ while (*d && (isALNUM_lazy(d) || *d == '\'' || *d == ':'))
d++;
/* If we've tried to read what we allow filehandles to look like, and
projects / p5sagit/p5-mst-13.2.git / blobdiff