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-rw-r--r--contrib/perl5/ext/Opcode/Opcode.xs482
1 files changed, 0 insertions, 482 deletions
diff --git a/contrib/perl5/ext/Opcode/Opcode.xs b/contrib/perl5/ext/Opcode/Opcode.xs
deleted file mode 100644
index cc4e1f4..0000000
--- a/contrib/perl5/ext/Opcode/Opcode.xs
+++ /dev/null
@@ -1,482 +0,0 @@
-#define PERL_NO_GET_CONTEXT
-#include "EXTERN.h"
-#include "perl.h"
-#include "XSUB.h"
-
-/* PL_maxo shouldn't differ from MAXO but leave room anyway (see BOOT:) */
-#define OP_MASK_BUF_SIZE (MAXO + 100)
-
-/* XXX op_named_bits and opset_all are never freed */
-static HV *op_named_bits; /* cache shared for whole process */
-static SV *opset_all; /* mask with all bits set */
-static IV opset_len; /* length of opmasks in bytes */
-static int opcode_debug = 0;
-
-static SV *new_opset (pTHX_ SV *old_opset);
-static int verify_opset (pTHX_ SV *opset, int fatal);
-static void set_opset_bits (pTHX_ char *bitmap, SV *bitspec, int on, char *opname);
-static void put_op_bitspec (pTHX_ char *optag, STRLEN len, SV *opset);
-static SV *get_op_bitspec (pTHX_ char *opname, STRLEN len, int fatal);
-
-
-/* Initialise our private op_named_bits HV.
- * It is first loaded with the name and number of each perl operator.
- * Then the builtin tags :none and :all are added.
- * Opcode.pm loads the standard optags from __DATA__
- * XXX leak-alert: data allocated here is never freed, call this
- * at most once
- */
-
-static void
-op_names_init(pTHX)
-{
- int i;
- STRLEN len;
- char **op_names;
- char *bitmap;
-
- op_named_bits = newHV();
- op_names = get_op_names();
- for(i=0; i < PL_maxo; ++i) {
- SV *sv;
- sv = newSViv(i);
- SvREADONLY_on(sv);
- hv_store(op_named_bits, op_names[i], strlen(op_names[i]), sv, 0);
- }
-
- put_op_bitspec(aTHX_ ":none",0, sv_2mortal(new_opset(aTHX_ Nullsv)));
-
- opset_all = new_opset(aTHX_ Nullsv);
- bitmap = SvPV(opset_all, len);
- i = len-1; /* deal with last byte specially, see below */
- while(i-- > 0)
- bitmap[i] = 0xFF;
- /* Take care to set the right number of bits in the last byte */
- bitmap[len-1] = (PL_maxo & 0x07) ? ~(0xFF << (PL_maxo & 0x07)) : 0xFF;
- put_op_bitspec(aTHX_ ":all",0, opset_all); /* don't mortalise */
-}
-
-
-/* Store a new tag definition. Always a mask.
- * The tag must not already be defined.
- * SV *mask is copied not referenced.
- */
-
-static void
-put_op_bitspec(pTHX_ char *optag, STRLEN len, SV *mask)
-{
- SV **svp;
- verify_opset(aTHX_ mask,1);
- if (!len)
- len = strlen(optag);
- svp = hv_fetch(op_named_bits, optag, len, 1);
- if (SvOK(*svp))
- croak("Opcode tag \"%s\" already defined", optag);
- sv_setsv(*svp, mask);
- SvREADONLY_on(*svp);
-}
-
-
-
-/* Fetch a 'bits' entry for an opname or optag (IV/PV).
- * Note that we return the actual entry for speed.
- * Always sv_mortalcopy() if returing it to user code.
- */
-
-static SV *
-get_op_bitspec(pTHX_ char *opname, STRLEN len, int fatal)
-{
- SV **svp;
- if (!len)
- len = strlen(opname);
- svp = hv_fetch(op_named_bits, opname, len, 0);
- if (!svp || !SvOK(*svp)) {
- if (!fatal)
- return Nullsv;
- if (*opname == ':')
- croak("Unknown operator tag \"%s\"", opname);
- if (*opname == '!') /* XXX here later, or elsewhere? */
- croak("Can't negate operators here (\"%s\")", opname);
- if (isALPHA(*opname))
- croak("Unknown operator name \"%s\"", opname);
- croak("Unknown operator prefix \"%s\"", opname);
- }
- return *svp;
-}
-
-
-
-static SV *
-new_opset(pTHX_ SV *old_opset)
-{
- SV *opset;
- if (old_opset) {
- verify_opset(aTHX_ old_opset,1);
- opset = newSVsv(old_opset);
- }
- else {
- opset = NEWSV(1156, opset_len);
- Zero(SvPVX(opset), opset_len + 1, char);
- SvCUR_set(opset, opset_len);
- (void)SvPOK_only(opset);
- }
- /* not mortalised here */
- return opset;
-}
-
-
-static int
-verify_opset(pTHX_ SV *opset, int fatal)
-{
- char *err = Nullch;
- if (!SvOK(opset)) err = "undefined";
- else if (!SvPOK(opset)) err = "wrong type";
- else if (SvCUR(opset) != opset_len) err = "wrong size";
- if (err && fatal) {
- croak("Invalid opset: %s", err);
- }
- return !err;
-}
-
-
-static void
-set_opset_bits(pTHX_ char *bitmap, SV *bitspec, int on, char *opname)
-{
- if (SvIOK(bitspec)) {
- int myopcode = SvIV(bitspec);
- int offset = myopcode >> 3;
- int bit = myopcode & 0x07;
- if (myopcode >= PL_maxo || myopcode < 0)
- croak("panic: opcode \"%s\" value %d is invalid", opname, myopcode);
- if (opcode_debug >= 2)
- warn("set_opset_bits bit %2d (off=%d, bit=%d) %s %s\n",
- myopcode, offset, bit, opname, (on)?"on":"off");
- if (on)
- bitmap[offset] |= 1 << bit;
- else
- bitmap[offset] &= ~(1 << bit);
- }
- else if (SvPOK(bitspec) && SvCUR(bitspec) == opset_len) {
-
- STRLEN len;
- char *specbits = SvPV(bitspec, len);
- if (opcode_debug >= 2)
- warn("set_opset_bits opset %s %s\n", opname, (on)?"on":"off");
- if (on)
- while(len-- > 0) bitmap[len] |= specbits[len];
- else
- while(len-- > 0) bitmap[len] &= ~specbits[len];
- }
- else
- croak("panic: invalid bitspec for \"%s\" (type %u)",
- opname, (unsigned)SvTYPE(bitspec));
-}
-
-
-static void
-opmask_add(pTHX_ SV *opset) /* THE ONLY FUNCTION TO EDIT PL_op_mask ITSELF */
-{
- int i,j;
- char *bitmask;
- STRLEN len;
- int myopcode = 0;
-
- verify_opset(aTHX_ opset,1); /* croaks on bad opset */
-
- if (!PL_op_mask) /* caller must ensure PL_op_mask exists */
- croak("Can't add to uninitialised PL_op_mask");
-
- /* OPCODES ALREADY MASKED ARE NEVER UNMASKED. See opmask_addlocal() */
-
- bitmask = SvPV(opset, len);
- for (i=0; i < opset_len; i++) {
- U16 bits = bitmask[i];
- if (!bits) { /* optimise for sparse masks */
- myopcode += 8;
- continue;
- }
- for (j=0; j < 8 && myopcode < PL_maxo; )
- PL_op_mask[myopcode++] |= bits & (1 << j++);
- }
-}
-
-static void
-opmask_addlocal(pTHX_ SV *opset, char *op_mask_buf) /* Localise PL_op_mask then opmask_add() */
-{
- char *orig_op_mask = PL_op_mask;
- SAVEVPTR(PL_op_mask);
-#if !defined(PERL_OBJECT)
- /* XXX casting to an ordinary function ptr from a member function ptr
- * is disallowed by Borland
- */
- if (opcode_debug >= 2)
- SAVEDESTRUCTOR((void(*)(void*))Perl_warn,"PL_op_mask restored");
-#endif
- PL_op_mask = &op_mask_buf[0];
- if (orig_op_mask)
- Copy(orig_op_mask, PL_op_mask, PL_maxo, char);
- else
- Zero(PL_op_mask, PL_maxo, char);
- opmask_add(aTHX_ opset);
-}
-
-
-
-MODULE = Opcode PACKAGE = Opcode
-
-PROTOTYPES: ENABLE
-
-BOOT:
- assert(PL_maxo < OP_MASK_BUF_SIZE);
- opset_len = (PL_maxo + 7) / 8;
- if (opcode_debug >= 1)
- warn("opset_len %ld\n", (long)opset_len);
- op_names_init(aTHX);
-
-
-void
-_safe_call_sv(Package, mask, codesv)
- char * Package
- SV * mask
- SV * codesv
-PPCODE:
- char op_mask_buf[OP_MASK_BUF_SIZE];
- GV *gv;
-
- ENTER;
-
- opmask_addlocal(aTHX_ mask, op_mask_buf);
-
- save_aptr(&PL_endav);
- PL_endav = (AV*)sv_2mortal((SV*)newAV()); /* ignore END blocks for now */
-
- save_hptr(&PL_defstash); /* save current default stash */
- /* the assignment to global defstash changes our sense of 'main' */
- PL_defstash = gv_stashpv(Package, GV_ADDWARN); /* should exist already */
- save_hptr(&PL_curstash);
- PL_curstash = PL_defstash;
-
- /* defstash must itself contain a main:: so we'll add that now */
- /* take care with the ref counts (was cause of long standing bug) */
- /* XXX I'm still not sure if this is right, GV_ADDWARN should warn! */
- gv = gv_fetchpv("main::", GV_ADDWARN, SVt_PVHV);
- sv_free((SV*)GvHV(gv));
- GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
-
- /* %INC must be clean for use/require in compartment */
- save_hash(PL_incgv);
- sv_free((SV*)GvHV(PL_incgv)); /* get rid of what save_hash gave us*/
- GvHV(PL_incgv) = (HV*)SvREFCNT_inc(GvHV(gv_HVadd(gv_fetchpv("INC",TRUE,SVt_PVHV))));
-
- PUSHMARK(SP);
- perl_call_sv(codesv, GIMME|G_EVAL|G_KEEPERR); /* use callers context */
- SPAGAIN; /* for the PUTBACK added by xsubpp */
- LEAVE;
-
-
-int
-verify_opset(opset, fatal = 0)
- SV *opset
- int fatal
-CODE:
- RETVAL = verify_opset(aTHX_ opset,fatal);
-OUTPUT:
- RETVAL
-
-void
-invert_opset(opset)
- SV *opset
-CODE:
- {
- char *bitmap;
- STRLEN len = opset_len;
- opset = sv_2mortal(new_opset(aTHX_ opset)); /* verify and clone opset */
- bitmap = SvPVX(opset);
- while(len-- > 0)
- bitmap[len] = ~bitmap[len];
- /* take care of extra bits beyond PL_maxo in last byte */
- if (PL_maxo & 07)
- bitmap[opset_len-1] &= ~(0xFF << (PL_maxo & 0x07));
- }
- ST(0) = opset;
-
-
-void
-opset_to_ops(opset, desc = 0)
- SV *opset
- int desc
-PPCODE:
- {
- STRLEN len;
- int i, j, myopcode;
- char *bitmap = SvPV(opset, len);
- char **names = (desc) ? get_op_descs() : get_op_names();
- verify_opset(aTHX_ opset,1);
- for (myopcode=0, i=0; i < opset_len; i++) {
- U16 bits = bitmap[i];
- for (j=0; j < 8 && myopcode < PL_maxo; j++, myopcode++) {
- if ( bits & (1 << j) )
- XPUSHs(sv_2mortal(newSVpv(names[myopcode], 0)));
- }
- }
- }
-
-
-void
-opset(...)
-CODE:
- int i;
- SV *bitspec, *opset;
- char *bitmap;
- STRLEN len, on;
- opset = sv_2mortal(new_opset(aTHX_ Nullsv));
- bitmap = SvPVX(opset);
- for (i = 0; i < items; i++) {
- char *opname;
- on = 1;
- if (verify_opset(aTHX_ ST(i),0)) {
- opname = "(opset)";
- bitspec = ST(i);
- }
- else {
- opname = SvPV(ST(i), len);
- if (*opname == '!') { on=0; ++opname;--len; }
- bitspec = get_op_bitspec(aTHX_ opname, len, 1);
- }
- set_opset_bits(aTHX_ bitmap, bitspec, on, opname);
- }
- ST(0) = opset;
-
-
-#define PERMITING (ix == 0 || ix == 1)
-#define ONLY_THESE (ix == 0 || ix == 2)
-
-void
-permit_only(safe, ...)
- SV *safe
-ALIAS:
- permit = 1
- deny_only = 2
- deny = 3
-CODE:
- int i, on;
- SV *bitspec, *mask;
- char *bitmap, *opname;
- STRLEN len;
-
- if (!SvROK(safe) || !SvOBJECT(SvRV(safe)) || SvTYPE(SvRV(safe))!=SVt_PVHV)
- croak("Not a Safe object");
- mask = *hv_fetch((HV*)SvRV(safe), "Mask",4, 1);
- if (ONLY_THESE) /* *_only = new mask, else edit current */
- sv_setsv(mask, sv_2mortal(new_opset(aTHX_ PERMITING ? opset_all : Nullsv)));
- else
- verify_opset(aTHX_ mask,1); /* croaks */
- bitmap = SvPVX(mask);
- for (i = 1; i < items; i++) {
- on = PERMITING ? 0 : 1; /* deny = mask bit on */
- if (verify_opset(aTHX_ ST(i),0)) { /* it's a valid mask */
- opname = "(opset)";
- bitspec = ST(i);
- }
- else { /* it's an opname/optag */
- opname = SvPV(ST(i), len);
- /* invert if op has ! prefix (only one allowed) */
- if (*opname == '!') { on = !on; ++opname; --len; }
- bitspec = get_op_bitspec(aTHX_ opname, len, 1); /* croaks */
- }
- set_opset_bits(aTHX_ bitmap, bitspec, on, opname);
- }
- ST(0) = &PL_sv_yes;
-
-
-
-void
-opdesc(...)
-PPCODE:
- int i, myopcode;
- STRLEN len;
- SV **args;
- char **op_desc = get_op_descs();
- /* copy args to a scratch area since we may push output values onto */
- /* the stack faster than we read values off it if masks are used. */
- args = (SV**)SvPVX(sv_2mortal(newSVpvn((char*)&ST(0), items*sizeof(SV*))));
- for (i = 0; i < items; i++) {
- char *opname = SvPV(args[i], len);
- SV *bitspec = get_op_bitspec(aTHX_ opname, len, 1);
- if (SvIOK(bitspec)) {
- myopcode = SvIV(bitspec);
- if (myopcode < 0 || myopcode >= PL_maxo)
- croak("panic: opcode %d (%s) out of range",myopcode,opname);
- XPUSHs(sv_2mortal(newSVpv(op_desc[myopcode], 0)));
- }
- else if (SvPOK(bitspec) && SvCUR(bitspec) == opset_len) {
- int b, j;
- STRLEN n_a;
- char *bitmap = SvPV(bitspec,n_a);
- myopcode = 0;
- for (b=0; b < opset_len; b++) {
- U16 bits = bitmap[b];
- for (j=0; j < 8 && myopcode < PL_maxo; j++, myopcode++)
- if (bits & (1 << j))
- XPUSHs(sv_2mortal(newSVpv(op_desc[myopcode], 0)));
- }
- }
- else
- croak("panic: invalid bitspec for \"%s\" (type %u)",
- opname, (unsigned)SvTYPE(bitspec));
- }
-
-
-void
-define_optag(optagsv, mask)
- SV *optagsv
- SV *mask
-CODE:
- STRLEN len;
- char *optag = SvPV(optagsv, len);
- put_op_bitspec(aTHX_ optag, len, mask); /* croaks */
- ST(0) = &PL_sv_yes;
-
-
-void
-empty_opset()
-CODE:
- ST(0) = sv_2mortal(new_opset(aTHX_ Nullsv));
-
-void
-full_opset()
-CODE:
- ST(0) = sv_2mortal(new_opset(aTHX_ opset_all));
-
-void
-opmask_add(opset)
- SV *opset
-PREINIT:
- if (!PL_op_mask)
- Newz(0, PL_op_mask, PL_maxo, char);
-CODE:
- opmask_add(aTHX_ opset);
-
-void
-opcodes()
-PPCODE:
- if (GIMME == G_ARRAY) {
- croak("opcodes in list context not yet implemented"); /* XXX */
- }
- else {
- XPUSHs(sv_2mortal(newSViv(PL_maxo)));
- }
-
-void
-opmask()
-CODE:
- ST(0) = sv_2mortal(new_opset(aTHX_ Nullsv));
- if (PL_op_mask) {
- char *bitmap = SvPVX(ST(0));
- int myopcode;
- for(myopcode=0; myopcode < PL_maxo; ++myopcode) {
- if (PL_op_mask[myopcode])
- bitmap[myopcode >> 3] |= 1 << (myopcode & 0x07);
- }
- }
-
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