static int (*next_keyword_plugin)(pTHX_ char *, STRLEN, OP **);
-static int kw_flags(pTHX_ const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
+DEFSTRUCT(Resource) {
+ Resource *next;
+ void *data;
+ void (*destroy)(pTHX_ void *);
+};
+
+typedef Resource *Sentinel[1];
+
+static void sentinel_clear_void(pTHX_ void *p) {
+ Resource **pp = p;
+ while (*pp) {
+ Resource *cur = *pp;
+ cur->destroy(aTHX_ cur->data);
+ cur->data = (void *)"no";
+ cur->destroy = NULL;
+ *pp = cur->next;
+ Safefree(cur);
+ }
+}
+
+static void sentinel_register(Sentinel sen, void *data, void (*destroy)(pTHX_ void *)) {
+ Resource *cur;
+
+ Newx(cur, 1, Resource);
+ cur->data = data;
+ cur->destroy = destroy;
+ cur->next = *sen;
+ *sen = cur;
+}
+
+static void my_sv_refcnt_dec_void(pTHX_ void *p) {
+ SV *sv = p;
+ SvREFCNT_dec(sv);
+}
+
+static SV *sentinel_mortalize(Sentinel sen, SV *sv) {
+ sentinel_register(sen, sv, my_sv_refcnt_dec_void);
+ return sv;
+}
+
+static void my_safefree(void *p) {
+ Safefree(p);
+}
+
+#define SENTINEL_ALLOC(SEN, P, N, T) STMT_START { \
+ Newx(P, N, T); \
+ sentinel_register(SEN, P, my_safefree); \
+} STMT_END
+
+#define SENTINEL_MDUP(SEN, P, O, N, T) STMT_START { \
+ void *const _sentinel_mdup_tmp_ = (P); \
+ SENTINEL_ALLOC(SEN, P, N, T); \
+ memcpy(P, _sentinel_mdup_tmp_, O * sizeof (T)); \
+} STMT_END
+
+#define SENTINEL_REALLOC(SEN, P, N, T) STMT_START { \
+ assert((N) > 0); \
+ if (!(P)) { \
+ SENTINEL_ALLOC(SEN, P, N, T); \
+ } else { \
+ Resource **_sentinel_realloc_tmp_ = (SEN); \
+ for (;;) { \
+ assert(*_sentinel_realloc_tmp_ != NULL); \
+ if ((*_sentinel_realloc_tmp_)->data == (P)) { \
+ Renew((*_sentinel_realloc_tmp_)->data, N, T); \
+ (P) = (*_sentinel_realloc_tmp_)->data; \
+ break; \
+ } \
+ _sentinel_realloc_tmp_ = &(*_sentinel_realloc_tmp_)->next; \
+ } \
+ } \
+} STMT_END
+
+static int kw_flags(pTHX_ Sentinel sen, const char *kw_ptr, STRLEN kw_len, KWSpec *spec) {
HV *hints;
SV *sv, **psv;
const char *p, *kw_active;
STRLEN kw_active_len;
spec->flags = 0;
- spec->shift = sv_2mortal(newSVpvs(""));
- spec->attrs = sv_2mortal(newSVpvs(""));
+ spec->shift = sentinel_mortalize(sen, newSVpvs(""));
+ spec->attrs = sentinel_mortalize(sen, newSVpvs(""));
if (!(hints = GvHV(PL_hintgv))) {
return FALSE;
const char *fk_ptr_; \
STRLEN fk_len_; \
SV *fk_sv_; \
- fk_sv_ = sv_2mortal(newSVpvs(HINTK_ ## NAME)); \
+ fk_sv_ = sentinel_mortalize(sen, newSVpvs(HINTK_ ## NAME)); \
sv_catpvn(fk_sv_, PTR, LEN); \
fk_ptr_ = SvPV(fk_sv_, fk_len_); \
if (!((X) = hv_fetch(hints, fk_ptr_, fk_len_, 0))) { \
return is_utf8_xidcont(tmpbuf);
}
-static SV *my_scan_word(pTHX_ bool allow_package) {
+static SV *my_scan_word(pTHX_ Sentinel sen, bool allow_package) {
bool at_start, at_substart;
I32 c;
- SV *sv = sv_2mortal(newSVpvs(""));
+ SV *sv = sentinel_mortalize(sen, newSVpvs(""));
if (lex_bufutf8()) {
SvUTF8_on(sv);
}
return SvCUR(sv) ? sv : NULL;
}
-static SV *my_scan_parens_tail(pTHX_ bool keep_backslash) {
+static SV *my_scan_parens_tail(pTHX_ Sentinel sen, bool keep_backslash) {
I32 c, nesting;
SV *sv;
line_t start;
start = CopLINE(PL_curcop);
- sv = sv_2mortal(newSVpvs(""));
+ sv = sentinel_mortalize(sen, newSVpvs(""));
if (lex_bufutf8()) {
SvUTF8_on(sv);
}
return sv;
}
-static void my_check_prototype(pTHX_ const SV *declarator, SV *proto) {
+static void my_check_prototype(pTHX_ Sentinel sen, const SV *declarator, SV *proto) {
char *start, *r, *w, *end;
STRLEN len;
/* check for bad characters */
if (strspn(start, "$@%*;[]&\\_+") != len) {
- SV *dsv = newSVpvs_flags("", SVs_TEMP);
+ SV *dsv = sentinel_mortalize(sen, newSVpvs(""));
warner(
packWARN(WARN_ILLEGALPROTO),
"Illegal character in prototype for %"SVf" : %s",
*/
static PADOFFSET parse_param(
pTHX_
+ Sentinel sen,
const SV *declarator, const KWSpec *spec, ParamSpec *param_spec,
int *pflags, SV **pname, OP **pinit
) {
lex_read_unichar(0);
lex_read_space(0);
- if (!(name = my_scan_word(aTHX_ FALSE))) {
+ if (!(name = my_scan_word(aTHX_ sen, FALSE))) {
croak("In %"SVf": missing identifier after '%c'", SVfARG(declarator), sigil);
}
sv_insert(name, 0, 0, &sigil, 1);
#define mkconstpvs(S) mkconstpv(aTHX_ "" S "", sizeof S - 1)
-static int parse_fun(pTHX_ OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
+static int parse_fun(pTHX_ Sentinel sen, OP **pop, const char *keyword_ptr, STRLEN keyword_len, const KWSpec *spec) {
ParamSpec *param_spec;
SV *declarator;
I32 floor_ix;
unsigned builtin_attrs;
I32 c;
- declarator = sv_2mortal(newSVpvn(keyword_ptr, keyword_len));
+ declarator = sentinel_mortalize(sen, newSVpvn(keyword_ptr, keyword_len));
lex_read_space(0);
/* function name */
saw_name = NULL;
- if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ TRUE))) {
+ if ((spec->flags & FLAG_NAME_OK) && (saw_name = my_scan_word(aTHX_ sen, TRUE))) {
if (PL_parser->expect != XSTATE) {
/* bail out early so we don't predeclare $saw_name */
/* initialize synthetic optree */
Newx(prelude_sentinel, 1, OP *);
*prelude_sentinel = NULL;
- SAVEDESTRUCTOR_X(free_ptr_op, prelude_sentinel);
+ sentinel_register(sen, prelude_sentinel, free_ptr_op);
/* parameters */
param_spec = NULL;
Newx(init_sentinel, 1, OP *);
*init_sentinel = NULL;
- SAVEDESTRUCTOR_X(free_ptr_op, init_sentinel);
+ sentinel_register(sen, init_sentinel, free_ptr_op);
Newx(param_spec, 1, ParamSpec);
ps_init(param_spec);
- SAVEDESTRUCTOR_X(ps_free_void, param_spec);
+ sentinel_register(sen, param_spec, ps_free_void);
lex_read_unichar(0);
lex_read_space(0);
char sigil;
PADOFFSET padoff;
- padoff = parse_param(aTHX_ declarator, spec, param_spec, &flags, &name, init_sentinel);
+ padoff = parse_param(aTHX_ sen, declarator, spec, param_spec, &flags, &name, init_sentinel);
S_intro_my(aTHX);
c = ':';
} else {
lex_read_unichar(0);
- if (!(proto = my_scan_parens_tail(aTHX_ FALSE))) {
+ if (!(proto = my_scan_parens_tail(aTHX_ sen, FALSE))) {
croak("In %"SVf": prototype not terminated", SVfARG(declarator));
}
- my_check_prototype(aTHX_ declarator, proto);
+ my_check_prototype(aTHX_ sen, declarator, proto);
lex_read_space(0);
c = lex_peek_unichar(0);
if (!(c == ':' || c == '{')) {
/* attributes */
Newx(attrs_sentinel, 1, OP *);
*attrs_sentinel = NULL;
- SAVEDESTRUCTOR_X(free_ptr_op, attrs_sentinel);
+ sentinel_register(sen, attrs_sentinel, free_ptr_op);
if (c == ':' || c == '{') /* '}' - hi, vim */ {
for (;;) {
SV *attr;
- if (!(attr = my_scan_word(aTHX_ FALSE))) {
+ if (!(attr = my_scan_word(aTHX_ sen, FALSE))) {
break;
}
} else {
SV *sv;
lex_read_unichar(0);
- if (!(sv = my_scan_parens_tail(aTHX_ TRUE))) {
+ if (!(sv = my_scan_parens_tail(aTHX_ sen, TRUE))) {
croak("In %"SVf": unterminated attribute parameter in attribute list", SVfARG(declarator));
}
sv_catpvs(attr, "(");
static int my_keyword_plugin(pTHX_ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) {
KWSpec spec;
int ret;
+ Sentinel sen = { NULL };
+ ENTER;
SAVETMPS;
- if (kw_flags(aTHX_ keyword_ptr, keyword_len, &spec)) {
- ret = parse_fun(aTHX_ op_ptr, keyword_ptr, keyword_len, &spec);
+ SAVEDESTRUCTOR_X(sentinel_clear_void, sen);
+
+ if (kw_flags(aTHX_ sen, keyword_ptr, keyword_len, &spec)) {
+ ret = parse_fun(aTHX_ sen, op_ptr, keyword_ptr, keyword_len, &spec);
} else {
ret = next_keyword_plugin(aTHX_ keyword_ptr, keyword_len, op_ptr);
}
FREETMPS;
+ LEAVE;
return ret;
}
projects / p5sagit/Function-Parameters.git / commitdiff