+/* This file is part of the indirect Perl module.
+ * See http://search.cpan.org/dist/indirect/ */
+
#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
+/* --- XS helpers ---------------------------------------------------------- */
+
+#define XSH_PACKAGE "indirect"
+
+#include "xsh/caps.h"
+#include "xsh/util.h"
+#include "xsh/mem.h"
+#include "xsh/ops.h"
+
+/* ... op => source position map ........................................... */
+
+typedef struct {
+ char *buf;
+ STRLEN pos;
+ STRLEN size;
+ STRLEN len;
+ line_t line;
+} indirect_op_info_t;
+
+#define PTABLE_NAME ptable
+#define PTABLE_VAL_FREE(V) if (V) { indirect_op_info_t *oi = (V); XSH_LOCAL_FREE(oi->buf, oi->size, char); XSH_LOCAL_FREE(oi, 1, indirect_op_info_t); }
+#define PTABLE_NEED_DELETE 1
+#define PTABLE_NEED_WALK 0
+
+#include "xsh/ptable.h"
+
+/* XSH_LOCAL_FREE() always need aTHX */
+#define ptable_store(T, K, V) ptable_store(aTHX_ (T), (K), (V))
+#define ptable_delete(T, K) ptable_delete(aTHX_ (T), (K))
+#define ptable_clear(T) ptable_clear(aTHX_ (T))
+#define ptable_free(T) ptable_free(aTHX_ (T))
+
+/* ... Lexical hints ....................................................... */
+
+#define XSH_HINTS_TYPE_SV 1
+
+#include "xsh/hints.h"
+
+/* ... Thread-local storage ................................................ */
+
+typedef struct {
+ ptable *map;
+ SV *global_code;
+} xsh_user_cxt_t;
+
+#define XSH_THREADS_USER_CONTEXT 1
+#define XSH_THREADS_USER_CLONE_NEEDS_DUP 1
+#define XSH_THREADS_COMPILE_TIME_PROTECTION 1
+
+#if XSH_THREADSAFE
+
+static void xsh_user_clone(pTHX_ const xsh_user_cxt_t *old_cxt, xsh_user_cxt_t *new_cxt, CLONE_PARAMS *params) {
+ new_cxt->map = ptable_new(32);
+ new_cxt->global_code = xsh_dup_inc(old_cxt->global_code, params);
+
+ return;
+}
+
+#endif /* XSH_THREADSAFE */
+
+#include "xsh/threads.h"
+
+/* ... Lexical hints, continued ............................................ */
+
+static SV *indirect_hint(pTHX) {
+#define indirect_hint() indirect_hint(aTHX)
+ SV *hint;
+
+#if XSH_HAS_PERL(5, 10, 0) || defined(PL_parser)
+ if (!PL_parser)
+ return NULL;
+#endif
+
+ hint = xsh_hints_fetch();
+ if (hint && SvOK(hint)) {
+ return xsh_hints_detag(hint);
+ } else {
+ dXSH_CXT;
+ if (xsh_is_loaded(&XSH_CXT))
+ return XSH_CXT.global_code;
+ else
+ return NULL;
+ }
+}
+
+/* --- Compatibility wrappers ---------------------------------------------- */
+
+#ifndef SvPV_const
+# define SvPV_const SvPV
+#endif
+
+#ifndef SvPV_nolen_const
+# define SvPV_nolen_const SvPV_nolen
+#endif
+
#ifndef SvPVX_const
# define SvPVX_const SvPVX
#endif
-STATIC U32 indirect_initialized = 0;
-STATIC U32 indirect_hash = 0;
+#ifndef SvREFCNT_inc_simple_void_NN
+# ifdef SvREFCNT_inc_simple_NN
+# define SvREFCNT_inc_simple_void_NN SvREFCNT_inc_simple_NN
+# else
+# define SvREFCNT_inc_simple_void_NN SvREFCNT_inc
+# endif
+#endif
-STATIC const char indirect_msg[] = "Indirect call of method \"%s\" on object \"%s\"";
+#ifndef sv_catpvn_nomg
+# define sv_catpvn_nomg sv_catpvn
+#endif
-STATIC HV *indirect_map = NULL;
-STATIC const char *indirect_linestr = NULL;
+#ifndef mPUSHp
+# define mPUSHp(P, L) PUSHs(sv_2mortal(newSVpvn((P), (L))))
+#endif
-STATIC UV indirect_hint(pTHX) {
-#define indirect_hint() indirect_hint(aTHX)
- SV *id = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
- NULL,
- "indirect", 8,
- 0,
- indirect_hash);
- return SvOK(id) ? SvUV(id) : 0;
-}
-
-STATIC void indirect_map_store(pTHX_ const OP *o, const char *src, SV *sv) {
-#define indirect_map_store(O, S, N) indirect_map_store(aTHX_ (O), (S), (N))
- char buf[32];
- const char *pl_linestr;
- SV *val;
-
- /* When lex_inwhat is set, we're in a quotelike environment (qq, qr, but not q)
- * In this case the linestr has temporarly changed, but the old buffer should
- * still be alive somewhere. */
-
- if (!PL_parser->lex_inwhat) {
- pl_linestr = SvPVX_const(PL_parser->linestr);
- if (indirect_linestr != pl_linestr) {
- hv_clear(indirect_map);
- indirect_linestr = pl_linestr;
+#ifndef mPUSHu
+# define mPUSHu(U) PUSHs(sv_2mortal(newSVuv(U)))
+#endif
+
+#ifndef HvNAME_get
+# define HvNAME_get(H) HvNAME(H)
+#endif
+
+#ifndef HvNAMELEN_get
+# define HvNAMELEN_get(H) strlen(HvNAME_get(H))
+#endif
+
+#if XSH_HAS_PERL(5, 10, 0) || defined(PL_parser)
+# ifndef PL_linestr
+# define PL_linestr PL_parser->linestr
+# endif
+# ifndef PL_bufptr
+# define PL_bufptr PL_parser->bufptr
+# endif
+# ifndef PL_oldbufptr
+# define PL_oldbufptr PL_parser->oldbufptr
+# endif
+# ifndef PL_lex_inwhat
+# define PL_lex_inwhat PL_parser->lex_inwhat
+# endif
+# ifndef PL_multi_close
+# define PL_multi_close PL_parser->multi_close
+# endif
+#else
+# ifndef PL_linestr
+# define PL_linestr PL_Ilinestr
+# endif
+# ifndef PL_bufptr
+# define PL_bufptr PL_Ibufptr
+# endif
+# ifndef PL_oldbufptr
+# define PL_oldbufptr PL_Ioldbufptr
+# endif
+# ifndef PL_lex_inwhat
+# define PL_lex_inwhat PL_Ilex_inwhat
+# endif
+# ifndef PL_multi_close
+# define PL_multi_close PL_Imulti_close
+# endif
+#endif
+
+/* ... Safe version of call_sv() ........................................... */
+
+static I32 indirect_call_sv(pTHX_ SV *sv, I32 flags) {
+#define indirect_call_sv(S, F) indirect_call_sv(aTHX_ (S), (F))
+ I32 ret, cxix;
+ PERL_CONTEXT saved_cx;
+ SV *saved_errsv = NULL;
+
+ if (SvTRUE(ERRSV)) {
+ if (IN_PERL_COMPILETIME && PL_errors)
+ sv_catsv(PL_errors, ERRSV);
+ else
+ saved_errsv = newSVsv(ERRSV);
+ SvCUR_set(ERRSV, 0);
+ }
+
+ cxix = (cxstack_ix < cxstack_max) ? (cxstack_ix + 1) : Perl_cxinc(aTHX);
+ /* The last popped context will be reused by call_sv(), but our callers may
+ * still need its previous value. Back it up so that it isn't clobbered. */
+ saved_cx = cxstack[cxix];
+
+ ret = call_sv(sv, flags | G_EVAL);
+
+ cxstack[cxix] = saved_cx;
+
+ if (SvTRUE(ERRSV)) {
+ /* Discard the old ERRSV, and reuse the variable to temporarily store the
+ * new one. */
+ if (saved_errsv)
+ sv_setsv(saved_errsv, ERRSV);
+ else
+ saved_errsv = newSVsv(ERRSV);
+ SvCUR_set(ERRSV, 0);
+ /* Immediately flush all errors. */
+ if (IN_PERL_COMPILETIME) {
+#if XSH_HAS_PERL(5, 10, 0) || defined(PL_parser)
+ if (PL_parser)
+ ++PL_parser->error_count;
+#elif defined(PL_error_count)
+ ++PL_error_count;
+#else
+ ++PL_Ierror_count;
+#endif
+ if (PL_errors) {
+ sv_setsv(ERRSV, PL_errors);
+ SvCUR_set(PL_errors, 0);
+ }
}
+ sv_catsv(ERRSV, saved_errsv);
+ SvREFCNT_dec(saved_errsv);
+ croak(NULL);
+ } else if (saved_errsv) {
+ /* If IN_PERL_COMPILETIME && PL_errors, then the old ERRSV has already been
+ * added to PL_errors. Otherwise, just restore it to ERRSV, as if no eval
+ * block has ever been executed. */
+ sv_setsv(ERRSV, saved_errsv);
+ SvREFCNT_dec(saved_errsv);
}
- val = newSVsv(sv);
- SvUPGRADE(val, SVt_PVIV);
- SvUVX(val) = PTR2UV(src);
- if (!hv_store(indirect_map, buf, sprintf(buf, "%u", PTR2UV(o)), val, 0))
- SvREFCNT_dec(val);
+ return ret;
}
-STATIC const char *indirect_map_fetch(pTHX_ const OP *o, SV **name) {
-#define indirect_map_fetch(O, S) indirect_map_fetch(aTHX_ (O), (S))
- char buf[32];
- SV **val;
+/* --- Check functions ----------------------------------------------------- */
- if (indirect_linestr != SvPVX(PL_parser->linestr))
- return NULL;
+/* ... op => source position map, continued ................................ */
- val = hv_fetch(indirect_map, buf, sprintf(buf, "%u", PTR2UV(o)), 0);
- if (!val) {
- *name = NULL;
- return NULL;
+static void indirect_map_store(pTHX_ const OP *o, STRLEN pos, SV *sv, line_t line) {
+#define indirect_map_store(O, P, N, L) indirect_map_store(aTHX_ (O), (P), (N), (L))
+ indirect_op_info_t *oi;
+ const char *s;
+ STRLEN len;
+ dXSH_CXT;
+
+ /* No need to check for XSH_CXT.map != NULL because this code path is always
+ * guarded by indirect_hint(). */
+
+ if (!(oi = ptable_fetch(XSH_CXT.map, o))) {
+ XSH_LOCAL_ALLOC(oi, 1, indirect_op_info_t);
+ ptable_store(XSH_CXT.map, o, oi);
+ oi->buf = NULL;
+ oi->size = 0;
+ }
+
+ if (sv) {
+ s = SvPV_const(sv, len);
+ } else {
+ s = "{";
+ len = 1;
}
- *name = *val;
- return INT2PTR(const char *, SvUVX(*val));
+ if (len > oi->size) {
+ XSH_LOCAL_REALLOC(oi->buf, oi->size, len, char);
+ oi->size = len;
+ }
+ if (oi->buf)
+ Copy(s, oi->buf, len, char);
+
+ oi->len = len;
+ oi->pos = pos;
+ oi->line = line;
}
-STATIC const char *indirect_find(pTHX_ SV *sv, const char *s) {
-#define indirect_find(N, S) indirect_find(aTHX_ (N), (S))
- STRLEN len;
- const char *p = NULL, *r = SvPV_const(sv, len);
+static const indirect_op_info_t *indirect_map_fetch(pTHX_ const OP *o) {
+#define indirect_map_fetch(O) indirect_map_fetch(aTHX_ (O))
+ dXSH_CXT;
+
+ /* No need to check for XSH_CXT.map != NULL because this code path is always
+ * guarded by indirect_hint(). */
+
+ return ptable_fetch(XSH_CXT.map, o);
+}
+
+static void indirect_map_delete(pTHX_ const OP *o) {
+#define indirect_map_delete(O) indirect_map_delete(aTHX_ (O))
+ dXSH_CXT;
- if (!len)
- return s;
+ if (xsh_is_loaded(&XSH_CXT) && XSH_CXT.map)
+ ptable_delete(XSH_CXT.map, o);
+}
- p = strstr(s, r);
- while (p) {
- p += len;
- if (!isALNUM(*p))
+/* ... Heuristics for finding a string in the source buffer ................ */
+
+static int indirect_find(pTHX_ SV *name_sv, const char *line_bufptr, STRLEN *name_pos) {
+#define indirect_find(NSV, LBP, NP) indirect_find(aTHX_ (NSV), (LBP), (NP))
+ STRLEN name_len, line_len;
+ const char *name, *name_end;
+ const char *line, *line_end;
+ const char *p;
+
+ line = SvPV_const(PL_linestr, line_len);
+ line_end = line + line_len;
+
+ name = SvPV_const(name_sv, name_len);
+ if (name_len >= 1 && *name == '$') {
+ ++name;
+ --name_len;
+ while (line_bufptr < line_end && *line_bufptr != '$')
+ ++line_bufptr;
+ if (line_bufptr >= line_end)
+ return 0;
+ }
+ name_end = name + name_len;
+
+ p = line_bufptr;
+ while (1) {
+ p = ninstr(p, line_end, name, name_end);
+ if (!p)
+ return 0;
+ if (!isALNUM(p[name_len]))
break;
- p = strstr(p + 1, r);
+ /* p points to a word that has name as prefix, skip the rest of the word */
+ p += name_len + 1;
+ while (isALNUM(*p))
+ ++p;
}
- return p;
+ *name_pos = p - line;
+
+ return 1;
}
-STATIC OP *(*indirect_old_ck_const)(pTHX_ OP *) = 0;
+/* ... ck_const ............................................................ */
+
+static OP *(*indirect_old_ck_const)(pTHX_ OP *) = 0;
+
+static OP *indirect_ck_const(pTHX_ OP *o) {
+ o = indirect_old_ck_const(aTHX_ o);
-STATIC OP *indirect_ck_const(pTHX_ OP *o) {
if (indirect_hint()) {
SV *sv = cSVOPo_sv;
- if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV))
- indirect_map_store(o, indirect_find(sv, PL_parser->oldbufptr), sv);
+
+ if (SvPOK(sv) && (SvTYPE(sv) >= SVt_PV)) {
+ STRLEN pos;
+ const char *bufptr;
+
+ bufptr = PL_multi_close == '<' ? PL_bufptr : PL_oldbufptr;
+
+ if (indirect_find(sv, bufptr, &pos)) {
+ STRLEN len;
+
+ /* If the constant is equal to the current package name, try to look for
+ * a "__PACKAGE__" coming before what we got. We only need to check this
+ * when we already had a match because __PACKAGE__ can only appear in
+ * direct method calls ("new __PACKAGE__" is a syntax error). */
+ len = SvCUR(sv);
+ if (PL_curstash
+ && len == (STRLEN) HvNAMELEN_get(PL_curstash)
+ && memcmp(SvPVX(sv), HvNAME_get(PL_curstash), len) == 0) {
+ STRLEN pos_pkg;
+ SV *pkg = sv_newmortal();
+ sv_setpvn(pkg, "__PACKAGE__", sizeof("__PACKAGE__")-1);
+
+ if (indirect_find(pkg, PL_oldbufptr, &pos_pkg) && pos_pkg < pos) {
+ sv = pkg;
+ pos = pos_pkg;
+ }
+ }
+
+ indirect_map_store(o, pos, sv, CopLINE(&PL_compiling));
+ return o;
+ }
+ }
}
- return CALL_FPTR(indirect_old_ck_const)(aTHX_ o);
+ indirect_map_delete(o);
+ return o;
}
-STATIC OP *(*indirect_old_ck_rv2sv)(pTHX_ OP *) = 0;
+/* ... ck_rv2sv ............................................................ */
+
+static OP *(*indirect_old_ck_rv2sv)(pTHX_ OP *) = 0;
-STATIC OP *indirect_ck_rv2sv(pTHX_ OP *o) {
+static OP *indirect_ck_rv2sv(pTHX_ OP *o) {
if (indirect_hint()) {
OP *op = cUNOPo->op_first;
- SV *name = cSVOPx_sv(op);
- if (SvPOK(name) && (SvTYPE(name) >= SVt_PV)) {
- SV *sv = sv_2mortal(newSVpvn("$", 1));
- sv_catsv(sv, name);
- indirect_map_store(o, indirect_find(sv, PL_parser->oldbufptr), sv);
+ SV *sv;
+ const char *name = NULL;
+ STRLEN pos, len;
+ OPCODE type = (OPCODE) op->op_type;
+
+ switch (type) {
+ case OP_GV:
+ case OP_GVSV: {
+ GV *gv = cGVOPx_gv(op);
+ name = GvNAME(gv);
+ len = GvNAMELEN(gv);
+ break;
+ }
+ default:
+ if ((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP) {
+ SV *nsv = cSVOPx_sv(op);
+ if (SvPOK(nsv) && (SvTYPE(nsv) >= SVt_PV))
+ name = SvPV_const(nsv, len);
+ }
+ }
+ if (!name)
+ goto done;
+
+ sv = sv_2mortal(newSVpvn("$", 1));
+ sv_catpvn_nomg(sv, name, len);
+ if (!indirect_find(sv, PL_oldbufptr, &pos)) {
+ /* If it failed, retry without the current stash */
+ const char *stash = HvNAME_get(PL_curstash);
+ STRLEN stashlen = HvNAMELEN_get(PL_curstash);
+
+ if ((len < stashlen + 2) || strnNE(name, stash, stashlen)
+ || name[stashlen] != ':' || name[stashlen+1] != ':') {
+ /* Failed again ? Try to remove main */
+ stash = "main";
+ stashlen = 4;
+ if ((len < stashlen + 2) || strnNE(name, stash, stashlen)
+ || name[stashlen] != ':' || name[stashlen+1] != ':')
+ goto done;
+ }
+
+ sv_setpvn(sv, "$", 1);
+ stashlen += 2;
+ sv_catpvn_nomg(sv, name + stashlen, len - stashlen);
+ if (!indirect_find(sv, PL_oldbufptr, &pos))
+ goto done;
}
+
+ o = indirect_old_ck_rv2sv(aTHX_ o);
+
+ indirect_map_store(o, pos, sv, CopLINE(&PL_compiling));
+ return o;
}
- return CALL_FPTR(indirect_old_ck_rv2sv)(aTHX_ o);
+done:
+ o = indirect_old_ck_rv2sv(aTHX_ o);
+
+ indirect_map_delete(o);
+ return o;
}
-STATIC OP *(*indirect_old_ck_padany)(pTHX_ OP *) = 0;
+/* ... ck_padany ........................................................... */
+
+static OP *(*indirect_old_ck_padany)(pTHX_ OP *) = 0;
+
+static OP *indirect_ck_padany(pTHX_ OP *o) {
+ o = indirect_old_ck_padany(aTHX_ o);
-STATIC OP *indirect_ck_padany(pTHX_ OP *o) {
if (indirect_hint()) {
SV *sv;
- const char *s = PL_parser->oldbufptr, *t = PL_parser->bufptr - 1;
+ const char *s = PL_oldbufptr, *t = PL_bufptr - 1;
while (s < t && isSPACE(*s)) ++s;
- while (t > s && isSPACE(*t)) --t;
- sv = sv_2mortal(newSVpvn(s, t - s + 1));
+ if (*s == '$' && ++s <= t) {
+ while (s < t && isSPACE(*s)) ++s;
+ while (s < t && isSPACE(*t)) --t;
+ sv = sv_2mortal(newSVpvn("$", 1));
+ sv_catpvn_nomg(sv, s, t - s + 1);
+ indirect_map_store(o, s - SvPVX_const(PL_linestr),
+ sv, CopLINE(&PL_compiling));
+ return o;
+ }
+ }
+
+ indirect_map_delete(o);
+ return o;
+}
- indirect_map_store(o, s, sv);
+/* ... ck_scope ............................................................ */
+
+static OP *(*indirect_old_ck_scope) (pTHX_ OP *) = 0;
+static OP *(*indirect_old_ck_lineseq)(pTHX_ OP *) = 0;
+
+static OP *indirect_ck_scope(pTHX_ OP *o) {
+ OP *(*old_ck)(pTHX_ OP *) = 0;
+
+ switch (o->op_type) {
+ case OP_SCOPE: old_ck = indirect_old_ck_scope; break;
+ case OP_LINESEQ: old_ck = indirect_old_ck_lineseq; break;
+ }
+ o = old_ck(aTHX_ o);
+
+ if (indirect_hint()) {
+ indirect_map_store(o, PL_oldbufptr - SvPVX_const(PL_linestr),
+ NULL, CopLINE(&PL_compiling));
+ return o;
}
- return CALL_FPTR(indirect_old_ck_padany)(aTHX_ o);
+ indirect_map_delete(o);
+ return o;
}
-STATIC OP *(*indirect_old_ck_method)(pTHX_ OP *) = 0;
+/* We don't need to clean the map entries for leave ops because they can only
+ * be created by mutating from a lineseq. */
+
+/* ... ck_method ........................................................... */
-STATIC OP *indirect_ck_method(pTHX_ OP *o) {
+static OP *(*indirect_old_ck_method)(pTHX_ OP *) = 0;
+
+static OP *indirect_ck_method(pTHX_ OP *o) {
if (indirect_hint()) {
OP *op = cUNOPo->op_first;
- SV *sv;
- const char *s = indirect_map_fetch(op, &sv);
- if (!s) {
- sv = cSVOPx_sv(op);
- if (!SvPOK(sv) || (SvTYPE(sv) < SVt_PV))
+
+ /* Indirect method call is only possible when the method is a bareword, so
+ * don't trip up on $obj->$meth. */
+ if (op && op->op_type == OP_CONST) {
+ const indirect_op_info_t *oi = indirect_map_fetch(op);
+ STRLEN pos;
+ line_t line;
+ SV *sv;
+
+ if (!oi)
goto done;
- sv = sv_mortalcopy(sv);
- s = indirect_find(sv, PL_parser->oldbufptr);
+
+ sv = sv_2mortal(newSVpvn(oi->buf, oi->len));
+ pos = oi->pos;
+ /* Keep the old line so that we really point to the first line of the
+ * expression. */
+ line = oi->line;
+
+ o = indirect_old_ck_method(aTHX_ o);
+ /* o may now be a method_named */
+
+ indirect_map_store(o, pos, sv, line);
+ return o;
}
- o = CALL_FPTR(indirect_old_ck_method)(aTHX_ o);
- /* o may now be a method_named */
- indirect_map_store(o, s, sv);
+ }
+
+done:
+ o = indirect_old_ck_method(aTHX_ o);
+
+ indirect_map_delete(o);
+ return o;
+}
+
+/* ... ck_method_named ..................................................... */
+
+/* "use foo/no foo" compiles its call to import/unimport directly to a
+ * method_named op. */
+
+static OP *(*indirect_old_ck_method_named)(pTHX_ OP *) = 0;
+
+static OP *indirect_ck_method_named(pTHX_ OP *o) {
+ if (indirect_hint()) {
+ STRLEN pos;
+ line_t line;
+ SV *sv;
+
+ sv = cSVOPo_sv;
+ if (!SvPOK(sv) || (SvTYPE(sv) < SVt_PV))
+ goto done;
+ sv = sv_mortalcopy(sv);
+
+ if (!indirect_find(sv, PL_oldbufptr, &pos))
+ goto done;
+ line = CopLINE(&PL_compiling);
+
+ o = indirect_old_ck_method_named(aTHX_ o);
+
+ indirect_map_store(o, pos, sv, line);
return o;
}
done:
- return CALL_FPTR(indirect_old_ck_method)(aTHX_ o);
+ o = indirect_old_ck_method_named(aTHX_ o);
+
+ indirect_map_delete(o);
+ return o;
}
-STATIC OP *(*indirect_old_ck_entersub)(pTHX_ OP *) = 0;
+/* ... ck_entersub ......................................................... */
+
+static OP *(*indirect_old_ck_entersub)(pTHX_ OP *) = 0;
+
+static OP *indirect_ck_entersub(pTHX_ OP *o) {
+ SV *code = indirect_hint();
+
+ o = indirect_old_ck_entersub(aTHX_ o);
-STATIC OP *indirect_ck_entersub(pTHX_ OP *o) {
- LISTOP *op;
- OP *om, *oo;
- UV hint = indirect_hint();
+ if (code) {
+ const indirect_op_info_t *moi, *ooi;
+ OP *mop, *oop;
+ LISTOP *lop;
- if (hint) {
- const char *pm, *po;
- SV *svm, *svo;
- op = (LISTOP *) o;
- while (op->op_type != OP_PUSHMARK)
- op = (LISTOP *) op->op_first;
- oo = op->op_sibling;
- om = oo;
- while (om->op_sibling)
- om = om->op_sibling;
- if (om->op_type == OP_METHOD)
- om = cUNOPx(om)->op_first;
- pm = indirect_map_fetch(om, &svm);
- po = indirect_map_fetch(oo, &svo);
- if (pm && po && pm < po)
- ((hint == 2) ? croak : warn)(indirect_msg, SvPV_nolen(svm), SvPV_nolen(svo));
+ oop = o;
+ do {
+ lop = (LISTOP *) oop;
+ if (!(lop->op_flags & OPf_KIDS))
+ goto done;
+ oop = lop->op_first;
+ } while (oop->op_type != OP_PUSHMARK);
+ oop = OpSIBLING(oop);
+ mop = lop->op_last;
+
+ if (!oop)
+ goto done;
+
+ switch (oop->op_type) {
+ case OP_CONST:
+ case OP_RV2SV:
+ case OP_PADSV:
+ case OP_SCOPE:
+ case OP_LEAVE:
+ break;
+ default:
+ goto done;
+ }
+
+ if (mop->op_type == OP_METHOD)
+ mop = cUNOPx(mop)->op_first;
+ else if (mop->op_type != OP_METHOD_NAMED)
+ goto done;
+
+ moi = indirect_map_fetch(mop);
+ if (!moi)
+ goto done;
+
+ ooi = indirect_map_fetch(oop);
+ if (!ooi)
+ goto done;
+
+ /* When positions are identical, the method and the object must have the
+ * same name. But it also means that it is an indirect call, as "foo->foo"
+ * results in different positions. */
+ if ( moi->line < ooi->line
+ || (moi->line == ooi->line && moi->pos <= ooi->pos)) {
+ SV *file;
+ dSP;
+
+ ENTER;
+ SAVETMPS;
+
+#ifdef USE_ITHREADS
+ file = sv_2mortal(newSVpv(CopFILE(&PL_compiling), 0));
+#else
+ file = sv_mortalcopy(CopFILESV(&PL_compiling));
+#endif
+
+ PUSHMARK(SP);
+ EXTEND(SP, 4);
+ mPUSHp(ooi->buf, ooi->len);
+ mPUSHp(moi->buf, moi->len);
+ PUSHs(file);
+ mPUSHu(moi->line);
+ PUTBACK;
+
+ indirect_call_sv(code, G_VOID);
+
+ PUTBACK;
+
+ FREETMPS;
+ LEAVE;
+ }
}
- return CALL_FPTR(indirect_old_ck_entersub)(aTHX_ o);
+done:
+ return o;
+}
+
+/* --- Module setup/teardown ----------------------------------------------- */
+
+static void xsh_user_global_setup(pTHX) {
+ xsh_ck_replace(OP_CONST, indirect_ck_const, &indirect_old_ck_const);
+ xsh_ck_replace(OP_RV2SV, indirect_ck_rv2sv, &indirect_old_ck_rv2sv);
+ xsh_ck_replace(OP_PADANY, indirect_ck_padany, &indirect_old_ck_padany);
+ xsh_ck_replace(OP_SCOPE, indirect_ck_scope, &indirect_old_ck_scope);
+ xsh_ck_replace(OP_LINESEQ, indirect_ck_scope, &indirect_old_ck_lineseq);
+
+ xsh_ck_replace(OP_METHOD, indirect_ck_method,
+ &indirect_old_ck_method);
+ xsh_ck_replace(OP_METHOD_NAMED, indirect_ck_method_named,
+ &indirect_old_ck_method_named);
+ xsh_ck_replace(OP_ENTERSUB, indirect_ck_entersub,
+ &indirect_old_ck_entersub);
+
+ return;
+}
+
+static void xsh_user_local_setup(pTHX_ xsh_user_cxt_t *cxt) {
+ HV *stash;
+
+ stash = gv_stashpvn(XSH_PACKAGE, XSH_PACKAGE_LEN, 1);
+ newCONSTSUB(stash, "I_THREADSAFE", newSVuv(XSH_THREADSAFE));
+ newCONSTSUB(stash, "I_FORKSAFE", newSVuv(XSH_FORKSAFE));
+
+ cxt->map = ptable_new(32);
+ cxt->global_code = NULL;
+
+ return;
}
+static void xsh_user_local_teardown(pTHX_ xsh_user_cxt_t *cxt) {
+ SvREFCNT_dec(cxt->global_code);
+ cxt->global_code = NULL;
+
+ ptable_free(cxt->map);
+ cxt->map = NULL;
+
+ return;
+}
+
+static void xsh_user_global_teardown(pTHX) {
+ xsh_ck_restore(OP_CONST, &indirect_old_ck_const);
+ xsh_ck_restore(OP_RV2SV, &indirect_old_ck_rv2sv);
+ xsh_ck_restore(OP_PADANY, &indirect_old_ck_padany);
+ xsh_ck_restore(OP_SCOPE, &indirect_old_ck_scope);
+ xsh_ck_restore(OP_LINESEQ, &indirect_old_ck_lineseq);
+
+ xsh_ck_restore(OP_METHOD, &indirect_old_ck_method);
+ xsh_ck_restore(OP_METHOD_NAMED, &indirect_old_ck_method_named);
+ xsh_ck_restore(OP_ENTERSUB, &indirect_old_ck_entersub);
+
+ return;
+}
+
+/* --- XS ------------------------------------------------------------------ */
+
MODULE = indirect PACKAGE = indirect
-PROTOTYPES: DISABLE
+PROTOTYPES: ENABLE
BOOT:
{
- if (!indirect_initialized++) {
- PERL_HASH(indirect_hash, "indirect", 8);
- indirect_map = newHV();
- indirect_old_ck_const = PL_check[OP_CONST];
- PL_check[OP_CONST] = MEMBER_TO_FPTR(indirect_ck_const);
- indirect_old_ck_rv2sv = PL_check[OP_RV2SV];
- PL_check[OP_RV2SV] = MEMBER_TO_FPTR(indirect_ck_rv2sv);
- indirect_old_ck_padany = PL_check[OP_PADANY];
- PL_check[OP_PADANY] = MEMBER_TO_FPTR(indirect_ck_padany);
- indirect_old_ck_method = PL_check[OP_METHOD];
- PL_check[OP_METHOD] = MEMBER_TO_FPTR(indirect_ck_method);
- indirect_old_ck_entersub = PL_check[OP_ENTERSUB];
- PL_check[OP_ENTERSUB] = MEMBER_TO_FPTR(indirect_ck_entersub);
- }
+ xsh_setup();
}
+
+#if XSH_THREADSAFE
+
+void
+CLONE(...)
+PROTOTYPE: DISABLE
+PPCODE:
+ xsh_clone();
+ XSRETURN(0);
+
+#endif /* XSH_THREADSAFE */
+
+SV *
+_tag(SV *code)
+PROTOTYPE: $
+CODE:
+ if (!SvOK(code))
+ code = NULL;
+ else if (SvROK(code))
+ code = SvRV(code);
+ RETVAL = xsh_hints_tag(code);
+OUTPUT:
+ RETVAL
+
+void
+_global(SV *code)
+PROTOTYPE: $
+PPCODE:
+ if (!SvOK(code))
+ code = NULL;
+ else if (SvROK(code))
+ code = SvRV(code);
+ {
+ dXSH_CXT;
+ SvREFCNT_dec(XSH_CXT.global_code);
+ XSH_CXT.global_code = SvREFCNT_inc(code);
+ }
+ XSRETURN(0);
projects / perl / modules / indirect.git / blobdiff