ext/B/B.xs

/*  B.xs
 *
 *  Copyright (c) 1996 Malcolm Beattie
 *
 *  You may distribute under the terms of either the GNU General Public
 *  License or the Artistic License, as specified in the README file.
 *
 */

#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#ifdef PerlIO
typedef PerlIO * InputStream;
#else
typedef FILE * InputStream;
#endif


static char *svclassnames[] = {
    "B::NULL",
    "B::IV",
    "B::NV",
    "B::RV",
    "B::PV",
    "B::PVIV",
    "B::PVNV",
    "B::PVMG",
    "B::BM",
    "B::PVLV",
    "B::AV",
    "B::HV",
    "B::CV",
    "B::GV",
    "B::FM",
    "B::IO",
};

typedef enum {
    OPc_NULL,   /* 0 */
    OPc_BASEOP, /* 1 */
    OPc_UNOP,   /* 2 */
    OPc_BINOP,  /* 3 */
    OPc_LOGOP,  /* 4 */
    OPc_LISTOP, /* 5 */
    OPc_PMOP,   /* 6 */
    OPc_SVOP,   /* 7 */
    OPc_PADOP,  /* 8 */
    OPc_PVOP,   /* 9 */
    OPc_LOOP,   /* 10 */
    OPc_COP /* 11 */
} opclass;

static char *opclassnames[] = {
    "B::NULL",
    "B::OP",
    "B::UNOP",
    "B::BINOP",
    "B::LOGOP",
    "B::LISTOP",
    "B::PMOP",
    "B::SVOP",
    "B::PADOP",
    "B::PVOP",
    "B::LOOP",
    "B::COP"
};

static size_t opsizes[] = {
    0,
    sizeof(OP),
    sizeof(UNOP),
    sizeof(BINOP),
    sizeof(LOGOP),
    sizeof(LISTOP),
    sizeof(PMOP),
    sizeof(SVOP),
    sizeof(PADOP),
    sizeof(PVOP),
    sizeof(LOOP),
    sizeof(COP)
};

#define MY_CXT_KEY "B::_guts" XS_VERSION

typedef struct {
    int     x_walkoptree_debug; /* Flag for walkoptree debug hook */
    SV *    x_specialsv_list[7];
} my_cxt_t;

START_MY_CXT

#define walkoptree_debug    (MY_CXT.x_walkoptree_debug)
#define specialsv_list      (MY_CXT.x_specialsv_list)

static opclass
cc_opclass(pTHX_ OP *o)
{
    if (!o)
    return OPc_NULL;

    if (o->op_type == 0)
    return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;

    if (o->op_type == OP_SASSIGN)
    return ((o->op_private & OPpASSIGN_BACKWARDS) ? OPc_UNOP : OPc_BINOP);

#ifdef USE_ITHREADS
    if (o->op_type == OP_GV || o->op_type == OP_GVSV ||
    o->op_type == OP_AELEMFAST || o->op_type == OP_RCATLINE)
    return OPc_PADOP;
#endif

    switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
    case OA_BASEOP:
    return OPc_BASEOP;

    case OA_UNOP:
    return OPc_UNOP;

    case OA_BINOP:
    return OPc_BINOP;

    case OA_LOGOP:
    return OPc_LOGOP;

    case OA_LISTOP:
    return OPc_LISTOP;

    case OA_PMOP:
    return OPc_PMOP;

    case OA_SVOP:
    return OPc_SVOP;

    case OA_PADOP:
    return OPc_PADOP;

    case OA_PVOP_OR_SVOP:
        /*
         * Character translations (tr///) are usually a PVOP, keeping a
         * pointer to a table of shorts used to look up translations.
         * Under utf8, however, a simple table isn't practical; instead,
         * the OP is an SVOP, and the SV is a reference to a swash
         * (i.e., an RV pointing to an HV).
         */
    return (o->op_private & (OPpTRANS_TO_UTF|OPpTRANS_FROM_UTF))
        ? OPc_SVOP : OPc_PVOP;

    case OA_LOOP:
    return OPc_LOOP;

    case OA_COP:
    return OPc_COP;

    case OA_BASEOP_OR_UNOP:
    /*
     * UNI(OP_foo) in toke.c returns token UNI or FUNC1 depending on
     * whether parens were seen. perly.y uses OPf_SPECIAL to
     * signal whether a BASEOP had empty parens or none.
     * Some other UNOPs are created later, though, so the best
     * test is OPf_KIDS, which is set in newUNOP.
     */
    return (o->op_flags & OPf_KIDS) ? OPc_UNOP : OPc_BASEOP;

    case OA_FILESTATOP:
    /*
     * The file stat OPs are created via UNI(OP_foo) in toke.c but use
     * the OPf_REF flag to distinguish between OP types instead of the
     * usual OPf_SPECIAL flag. As usual, if OPf_KIDS is set, then we
     * return OPc_UNOP so that walkoptree can find our children. If
     * OPf_KIDS is not set then we check OPf_REF. Without OPf_REF set
     * (no argument to the operator) it's an OP; with OPf_REF set it's
     * an SVOP (and op_sv is the GV for the filehandle argument).
     */
    return ((o->op_flags & OPf_KIDS) ? OPc_UNOP :
#ifdef USE_ITHREADS
        (o->op_flags & OPf_REF) ? OPc_PADOP : OPc_BASEOP);
#else
        (o->op_flags & OPf_REF) ? OPc_SVOP : OPc_BASEOP);
#endif
    case OA_LOOPEXOP:
    /*
     * next, last, redo, dump and goto use OPf_SPECIAL to indicate that a
     * label was omitted (in which case it's a BASEOP) or else a term was
     * seen. In this last case, all except goto are definitely PVOP but
     * goto is either a PVOP (with an ordinary constant label), an UNOP
     * with OPf_STACKED (with a non-constant non-sub) or an UNOP for
     * OP_REFGEN (with goto &sub) in which case OPf_STACKED also seems to
     * get set.
     */
    if (o->op_flags & OPf_STACKED)
        return OPc_UNOP;
    else if (o->op_flags & OPf_SPECIAL)
        return OPc_BASEOP;
    else
        return OPc_PVOP;
    }
    warn("can't determine class of operator %s, assuming BASEOP\n",
     PL_op_name[o->op_type]);
    return OPc_BASEOP;
}

static char *
cc_opclassname(pTHX_ OP *o)
{
    return opclassnames[cc_opclass(aTHX_ o)];
}

static SV *
make_sv_object(pTHX_ SV *arg, SV *sv)
{
    char *type = 0;
    IV iv;
    dMY_CXT;

    for (iv = 0; iv < sizeof(specialsv_list)/sizeof(SV*); iv++) {
    if (sv == specialsv_list[iv]) {
        type = "B::SPECIAL";
        break;
    }
    }
    if (!type) {
    type = svclassnames[SvTYPE(sv)];
    iv = PTR2IV(sv);
    }
    sv_setiv(newSVrv(arg, type), iv);
    return arg;
}

static SV *
make_mg_object(pTHX_ SV *arg, MAGIC *mg)
{
    sv_setiv(newSVrv(arg, "B::MAGIC"), PTR2IV(mg));
    return arg;
}

static SV *
cstring(pTHX_ SV *sv, bool perlstyle)
{
    SV *sstr = newSVpvn("", 0);
    STRLEN len;
    char *s;
    char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */

    if (!SvOK(sv))
    sv_setpvn(sstr, "0", 1);
    else if (perlstyle && SvUTF8(sv))
    {
    SV *tmpsv = sv_newmortal(); /* Temporary SV to feed sv_uni_display */
    len = SvCUR(sv);
    s = sv_uni_display(tmpsv, sv, 8*len, UNI_DISPLAY_QQ);
    sv_setpv(sstr,"\"");
    while (*s)
    {
        if (*s == '"')
        sv_catpv(sstr, "\\\"");
        else if (*s == '$')
        sv_catpv(sstr, "\\$");
        else if (*s == '@')
        sv_catpv(sstr, "\\@");
        else if (*s == '\\')
        {
        if (strchr("nrftax\\",*(s+1)))
            sv_catpvn(sstr, s++, 2);
        else
            sv_catpv(sstr, "\\\\");
        }
        else /* should always be printable */
        sv_catpvn(sstr, s, 1);
        ++s;
    }
    sv_catpv(sstr, "\"");
    return sstr;
    }
    else
    {
    /* XXX Optimise? */
    s = SvPV(sv, len);
    sv_catpv(sstr, "\"");
    for (; len; len--, s++)
    {
        /* At least try a little for readability */
        if (*s == '"')
        sv_catpv(sstr, "\\\"");
        else if (*s == '\\')
        sv_catpv(sstr, "\\\\");
            /* trigraphs - bleagh */
            else if (!perlstyle && *s == '?' && len>=3 && s[1] == '?')
            {
                sprintf(escbuff, "\\%03o", '?');
                sv_catpv(sstr, escbuff);
            }
        else if (perlstyle && *s == '$')
        sv_catpv(sstr, "\\$");
        else if (perlstyle && *s == '@')
        sv_catpv(sstr, "\\@");
#ifdef EBCDIC
        else if (isPRINT(*s))
#else
        else if (*s >= ' ' && *s < 127)
#endif /* EBCDIC */
        sv_catpvn(sstr, s, 1);
        else if (*s == '\n')
        sv_catpv(sstr, "\\n");
        else if (*s == '\r')
        sv_catpv(sstr, "\\r");
        else if (*s == '\t')
        sv_catpv(sstr, "\\t");
        else if (*s == '\a')
        sv_catpv(sstr, "\\a");
        else if (*s == '\b')
        sv_catpv(sstr, "\\b");
        else if (*s == '\f')
        sv_catpv(sstr, "\\f");
        else if (!perlstyle && *s == '\v')
        sv_catpv(sstr, "\\v");
        else
        {
        /* Don't want promotion of a signed -1 char in sprintf args */
        unsigned char c = (unsigned char) *s;
        sprintf(escbuff, "\\%03o", c);
        sv_catpv(sstr, escbuff);
        }
        /* XXX Add line breaks if string is long */
    }
    sv_catpv(sstr, "\"");
    }
    return sstr;
}

static SV *
cchar(pTHX_ SV *sv)
{
    SV *sstr = newSVpvn("'", 1);
    STRLEN n_a;
    char *s = SvPV(sv, n_a);

    if (*s == '\'')
    sv_catpv(sstr, "\\'");
    else if (*s == '\\')
    sv_catpv(sstr, "\\\\");
#ifdef EBCDIC
    else if (isPRINT(*s))
#else
    else if (*s >= ' ' && *s < 127)
#endif /* EBCDIC */
    sv_catpvn(sstr, s, 1);
    else if (*s == '\n')
    sv_catpv(sstr, "\\n");
    else if (*s == '\r')
    sv_catpv(sstr, "\\r");
    else if (*s == '\t')
    sv_catpv(sstr, "\\t");
    else if (*s == '\a')
    sv_catpv(sstr, "\\a");
    else if (*s == '\b')
    sv_catpv(sstr, "\\b");
    else if (*s == '\f')
    sv_catpv(sstr, "\\f");
    else if (*s == '\v')
    sv_catpv(sstr, "\\v");
    else
    {
    /* no trigraph support */
    char escbuff[5]; /* to fit backslash, 3 octals + trailing \0 */
    /* Don't want promotion of a signed -1 char in sprintf args */
    unsigned char c = (unsigned char) *s;
    sprintf(escbuff, "\\%03o", c);
    sv_catpv(sstr, escbuff);
    }
    sv_catpv(sstr, "'");
    return sstr;
}

void
walkoptree(pTHX_ SV *opsv, char *method)
{
    dSP;
    OP *o, *kid;
    dMY_CXT;

    if (!SvROK(opsv))
    croak("opsv is not a reference");
    opsv = sv_mortalcopy(opsv);
    o = INT2PTR(OP*,SvIV((SV*)SvRV(opsv)));
    if (walkoptree_debug) {
    PUSHMARK(sp);
    XPUSHs(opsv);
    PUTBACK;
    perl_call_method("walkoptree_debug", G_DISCARD);
    }
    PUSHMARK(sp);
    XPUSHs(opsv);
    PUTBACK;
    perl_call_method(method, G_DISCARD);
    if (o && (o->op_flags & OPf_KIDS)) {
    for (kid = ((UNOP*)o)->op_first; kid; kid = kid->op_sibling) {
        /* Use the same opsv. Rely on methods not to mess it up. */
        sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ kid)), PTR2IV(kid));
        walkoptree(aTHX_ opsv, method);
    }
    }
    if (o && (cc_opclass(aTHX_ o) == OPc_PMOP)
        && (kid = cPMOPo->op_pmreplroot))
    {
    sv_setiv(newSVrv(opsv, opclassnames[OPc_PMOP]), PTR2IV(kid));
    walkoptree(aTHX_ opsv, method);
    }
}

SV **
oplist(pTHX_ OP *o, SV **SP)
{
    for(; o; o = o->op_next) {
    SV *opsv;
    if (o->op_seq == 0)
        break;
    o->op_seq = 0;
    opsv = sv_newmortal();
    sv_setiv(newSVrv(opsv, cc_opclassname(aTHX_ (OP*)o)), PTR2IV(o));
    XPUSHs(opsv);
        switch (o->op_type) {
    case OP_SUBST:
            SP = oplist(aTHX_ cPMOPo->op_pmreplstart, SP);
            continue;
    case OP_SORT:
        if (o->op_flags & OPf_STACKED && o->op_flags & OPf_SPECIAL) {
        OP *kid = cLISTOPo->op_first->op_sibling;   /* pass pushmark */
        kid = kUNOP->op_first;                      /* pass rv2gv */
        kid = kUNOP->op_first;                      /* pass leave */
        SP = oplist(aTHX_ kid->op_next, SP);
        }
        continue;
        }
    switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
    case OA_LOGOP:
        SP = oplist(aTHX_ cLOGOPo->op_other, SP);
        break;
    case OA_LOOP:
        SP = oplist(aTHX_ cLOOPo->op_lastop, SP);
        SP = oplist(aTHX_ cLOOPo->op_nextop, SP);
        SP = oplist(aTHX_ cLOOPo->op_redoop, SP);
        break;
    }
    }
    return SP;
}

typedef OP  *B__OP;
typedef UNOP    *B__UNOP;
typedef BINOP   *B__BINOP;
typedef LOGOP   *B__LOGOP;
typedef LISTOP  *B__LISTOP;
typedef PMOP    *B__PMOP;
typedef SVOP    *B__SVOP;
typedef PADOP   *B__PADOP;
typedef PVOP    *B__PVOP;
typedef LOOP    *B__LOOP;
typedef COP *B__COP;

typedef SV  *B__SV;
typedef SV  *B__IV;
typedef SV  *B__PV;
typedef SV  *B__NV;
typedef SV  *B__PVMG;
typedef SV  *B__PVLV;
typedef SV  *B__BM;
typedef SV  *B__RV;
typedef SV  *B__FM;
typedef AV  *B__AV;
typedef HV  *B__HV;
typedef CV  *B__CV;
typedef GV  *B__GV;
typedef IO  *B__IO;

typedef MAGIC   *B__MAGIC;

MODULE = B  PACKAGE = B PREFIX = B_

PROTOTYPES: DISABLE

BOOT:
{
    HV *stash = gv_stashpvn("B", 1, TRUE);
    AV *export_ok = perl_get_av("B::EXPORT_OK",TRUE);
    MY_CXT_INIT;
    specialsv_list[0] = Nullsv;
    specialsv_list[1] = &PL_sv_undef;
    specialsv_list[2] = &PL_sv_yes;
    specialsv_list[3] = &PL_sv_no;
    specialsv_list[4] = pWARN_ALL;
    specialsv_list[5] = pWARN_NONE;
    specialsv_list[6] = pWARN_STD;
#include "defsubs.h"
}

#define B_main_cv() PL_main_cv
#define B_init_av() PL_initav
#define B_inc_gv()  PL_incgv
#define B_check_av()    PL_checkav_save
#define B_begin_av()    PL_beginav_save
#define B_end_av()  PL_endav
#define B_main_root()   PL_main_root
#define B_main_start()  PL_main_start
#define B_amagic_generation()   PL_amagic_generation
#define B_defstash()    PL_defstash
#define B_curstash()    PL_curstash
#define B_dowarn()  PL_dowarn
#define B_comppadlist() (PL_main_cv ? CvPADLIST(PL_main_cv) : CvPADLIST(PL_compcv))
#define B_sv_undef()    &PL_sv_undef
#define B_sv_yes()  &PL_sv_yes
#define B_sv_no()   &PL_sv_no
#define B_formfeed()    PL_formfeed
#ifdef USE_ITHREADS
#define B_regex_padav() PL_regex_padav
#endif

B::AV
B_init_av()

B::AV
B_check_av()

B::AV
B_begin_av()

B::AV
B_end_av()

B::GV
B_inc_gv()

#ifdef USE_ITHREADS

B::AV
B_regex_padav()

#endif

B::CV
B_main_cv()

B::OP
B_main_root()

B::OP
B_main_start()

long
B_amagic_generation()

B::AV
B_comppadlist()

B::SV
B_sv_undef()

B::SV
B_sv_yes()

B::SV
B_sv_no()

B::HV
B_curstash()

B::HV
B_defstash()

U8
B_dowarn()

B::SV
B_formfeed()

void
B_warnhook()
    CODE:
    ST(0) = make_sv_object(aTHX_ sv_newmortal(), PL_warnhook);

void
B_diehook()
    CODE:
    ST(0) = make_sv_object(aTHX_ sv_newmortal(), PL_diehook);

MODULE = B  PACKAGE = B

void
walkoptree(opsv, method)
    SV *    opsv
    char *  method
    CODE:
    walkoptree(aTHX_ opsv, method);

int
walkoptree_debug(...)
    CODE:
    dMY_CXT;
    RETVAL = walkoptree_debug;
    if (items > 0 && SvTRUE(ST(1)))
        walkoptree_debug = 1;
    OUTPUT:
    RETVAL

#define address(sv) PTR2IV(sv)

IV
address(sv)
    SV *    sv

B::SV
svref_2object(sv)
    SV *    sv
    CODE:
    if (!SvROK(sv))
        croak("argument is not a reference");
    RETVAL = (SV*)SvRV(sv);
    OUTPUT:
    RETVAL

void
opnumber(name)
char *  name
CODE:
{
 int i;
 IV  result = -1;
 ST(0) = sv_newmortal();
 if (strncmp(name,"pp_",3) == 0)
   name += 3;
 for (i = 0; i < PL_maxo; i++)
  {
   if (strcmp(name, PL_op_name[i]) == 0)
    {
     result = i;
     break;
    }
  }
 sv_setiv(ST(0),result);
}

void
ppname(opnum)
    int opnum
    CODE:
    ST(0) = sv_newmortal();
    if (opnum >= 0 && opnum < PL_maxo) {
        sv_setpvn(ST(0), "pp_", 3);
        sv_catpv(ST(0), PL_op_name[opnum]);
    }

void
hash(sv)
    SV *    sv
    CODE:
    char *s;
    STRLEN len;
    U32 hash = 0;
    char hexhash[19]; /* must fit "0xffffffffffffffff" plus trailing \0 */
    s = SvPV(sv, len);
    PERL_HASH(hash, s, len);
    sprintf(hexhash, "0x%"UVxf, (UV)hash);
    ST(0) = sv_2mortal(newSVpv(hexhash, 0));

#define cast_I32(foo) (I32)foo
IV
cast_I32(i)
    IV  i

void
minus_c()
    CODE:
    PL_minus_c = TRUE;

void
save_BEGINs()
    CODE:
    PL_savebegin = TRUE;

SV *
cstring(sv)
    SV *    sv
    CODE:
    RETVAL = cstring(aTHX_ sv, 0);
    OUTPUT:
    RETVAL

SV *
perlstring(sv)
    SV *    sv
    CODE:
    RETVAL = cstring(aTHX_ sv, 1);
    OUTPUT:
    RETVAL

SV *
cchar(sv)
    SV *    sv
    CODE:
    RETVAL = cchar(aTHX_ sv);
    OUTPUT:
    RETVAL

void
threadsv_names()
    PPCODE:
#ifdef USE_5005THREADS
    int i;
    STRLEN len = strlen(PL_threadsv_names);

    EXTEND(sp, len);
    for (i = 0; i < len; i++)
        PUSHs(sv_2mortal(newSVpvn(&PL_threadsv_names[i], 1)));
#endif


#define OP_next(o)  o->op_next
#define OP_sibling(o)   o->op_sibling
#define OP_desc(o)  PL_op_desc[o->op_type]
#define OP_targ(o)  o->op_targ
#define OP_type(o)  o->op_type
#define OP_seq(o)   o->op_seq
#define OP_flags(o) o->op_flags
#define OP_private(o)   o->op_private

MODULE = B  PACKAGE = B::OP     PREFIX = OP_

size_t
OP_size(o)
    B::OP       o
    CODE:
    RETVAL = opsizes[cc_opclass(aTHX_ o)];
    OUTPUT:
    RETVAL

B::OP
OP_next(o)
    B::OP       o

B::OP
OP_sibling(o)
    B::OP       o

char *
OP_name(o)
    B::OP       o
    CODE:
    RETVAL = PL_op_name[o->op_type];
    OUTPUT:
    RETVAL


void
OP_ppaddr(o)
    B::OP       o
    PREINIT:
    int i;
    SV *sv = sv_newmortal();
    CODE:
    sv_setpvn(sv, "PL_ppaddr[OP_", 13);
    sv_catpv(sv, PL_op_name[o->op_type]);
    for (i=13; (STRLEN)i < SvCUR(sv); ++i)
        SvPVX(sv)[i] = toUPPER(SvPVX(sv)[i]);
    sv_catpv(sv, "]");
    ST(0) = sv;

char *
OP_desc(o)
    B::OP       o

PADOFFSET
OP_targ(o)
    B::OP       o

U16
OP_type(o)
    B::OP       o

U16
OP_seq(o)
    B::OP       o

U8
OP_flags(o)
    B::OP       o

U8
OP_private(o)
    B::OP       o

void
OP_oplist(o)
    B::OP       o
    PPCODE:
    SP = oplist(aTHX_ o, SP);

#define UNOP_first(o)   o->op_first

MODULE = B  PACKAGE = B::UNOP       PREFIX = UNOP_

B::OP
UNOP_first(o)
    B::UNOP o

#define BINOP_last(o)   o->op_last

MODULE = B  PACKAGE = B::BINOP      PREFIX = BINOP_

B::OP
BINOP_last(o)
    B::BINOP    o

#define LOGOP_other(o)  o->op_other

MODULE = B  PACKAGE = B::LOGOP      PREFIX = LOGOP_

B::OP
LOGOP_other(o)
    B::LOGOP    o

MODULE = B  PACKAGE = B::LISTOP     PREFIX = LISTOP_

U32
LISTOP_children(o)
    B::LISTOP   o
    OP *        kid = NO_INIT
    int     i = NO_INIT
    CODE:
    i = 0;
    for (kid = o->op_first; kid; kid = kid->op_sibling)
        i++;
    RETVAL = i;
    OUTPUT:
        RETVAL

#define PMOP_pmreplroot(o)  o->op_pmreplroot
#define PMOP_pmreplstart(o) o->op_pmreplstart
#define PMOP_pmnext(o)      o->op_pmnext
#define PMOP_pmregexp(o)    PM_GETRE(o)
#ifdef USE_ITHREADS
#define PMOP_pmoffset(o)    o->op_pmoffset
#define PMOP_pmstashpv(o)   o->op_pmstashpv
#else
#define PMOP_pmstash(o)     o->op_pmstash
#endif
#define PMOP_pmflags(o)     o->op_pmflags
#define PMOP_pmpermflags(o) o->op_pmpermflags
#define PMOP_pmdynflags(o)      o->op_pmdynflags

MODULE = B  PACKAGE = B::PMOP       PREFIX = PMOP_

void
PMOP_pmreplroot(o)
    B::PMOP     o
    OP *        root = NO_INIT
    CODE:
    ST(0) = sv_newmortal();
    root = o->op_pmreplroot;
    /* OP_PUSHRE stores an SV* instead of an OP* in op_pmreplroot */
    if (o->op_type == OP_PUSHRE) {
#ifdef USE_ITHREADS
            sv_setiv(ST(0), INT2PTR(PADOFFSET,root) );
#else
        sv_setiv(newSVrv(ST(0), root ?
                 svclassnames[SvTYPE((SV*)root)] : "B::SV"),
             PTR2IV(root));
#endif
    }
    else {
        sv_setiv(newSVrv(ST(0), cc_opclassname(aTHX_ root)), PTR2IV(root));
    }

B::OP
PMOP_pmreplstart(o)
    B::PMOP     o

B::PMOP
PMOP_pmnext(o)
    B::PMOP     o

#ifdef USE_ITHREADS

IV
PMOP_pmoffset(o)
    B::PMOP     o

char*
PMOP_pmstashpv(o)
    B::PMOP     o

#else

B::HV
PMOP_pmstash(o)
    B::PMOP     o

#endif

U32
PMOP_pmflags(o)
    B::PMOP     o

U32
PMOP_pmpermflags(o)
    B::PMOP     o

U8
PMOP_pmdynflags(o)
        B::PMOP         o

void
PMOP_precomp(o)
    B::PMOP     o
    REGEXP *    rx = NO_INIT
    CODE:
    ST(0) = sv_newmortal();
    rx = PM_GETRE(o);
    if (rx)
        sv_setpvn(ST(0), rx->precomp, rx->prelen);

#define SVOP_sv(o)     cSVOPo->op_sv
#define SVOP_gv(o)     ((GV*)cSVOPo->op_sv)

MODULE = B  PACKAGE = B::SVOP       PREFIX = SVOP_

B::SV
SVOP_sv(o)
    B::SVOP o

B::GV
SVOP_gv(o)
    B::SVOP o

#define PADOP_padix(o)  o->op_padix
#define PADOP_sv(o) (o->op_padix ? PAD_SVl(o->op_padix) : Nullsv)
#define PADOP_gv(o) ((o->op_padix \
              && SvTYPE(PAD_SVl(o->op_padix)) == SVt_PVGV) \
             ? (GV*)PAD_SVl(o->op_padix) : Nullgv)

MODULE = B  PACKAGE = B::PADOP      PREFIX = PADOP_

PADOFFSET
PADOP_padix(o)
    B::PADOP o

B::SV
PADOP_sv(o)
    B::PADOP o

B::GV
PADOP_gv(o)
    B::PADOP o

MODULE = B  PACKAGE = B::PVOP       PREFIX = PVOP_

void
PVOP_pv(o)
    B::PVOP o
    CODE:
    /*
     * OP_TRANS uses op_pv to point to a table of 256 or >=258 shorts
     * whereas other PVOPs point to a null terminated string.
     */
    if (o->op_type == OP_TRANS &&
        (o->op_private & OPpTRANS_COMPLEMENT) &&
        !(o->op_private & OPpTRANS_DELETE))
    {
        short* tbl = (short*)o->op_pv;
        short entries = 257 + tbl[256];
        ST(0) = sv_2mortal(newSVpv(o->op_pv, entries * sizeof(short)));
    }
    else if (o->op_type == OP_TRANS) {
        ST(0) = sv_2mortal(newSVpv(o->op_pv, 256 * sizeof(short)));
    }
    else
        ST(0) = sv_2mortal(newSVpv(o->op_pv, 0));

#define LOOP_redoop(o)  o->op_redoop
#define LOOP_nextop(o)  o->op_nextop
#define LOOP_lastop(o)  o->op_lastop

MODULE = B  PACKAGE = B::LOOP       PREFIX = LOOP_


B::OP
LOOP_redoop(o)
    B::LOOP o

B::OP
LOOP_nextop(o)
    B::LOOP o

B::OP
LOOP_lastop(o)
    B::LOOP o

#define COP_label(o)    o->cop_label
#define COP_stashpv(o)  CopSTASHPV(o)
#define COP_stash(o)    CopSTASH(o)
#define COP_file(o) CopFILE(o)
#define COP_filegv(o)   CopFILEGV(o)
#define COP_cop_seq(o)  o->cop_seq
#define COP_arybase(o)  o->cop_arybase
#define COP_line(o) CopLINE(o)
#define COP_warnings(o) o->cop_warnings
#define COP_io(o)   o->cop_io

MODULE = B  PACKAGE = B::COP        PREFIX = COP_

char *
COP_label(o)
    B::COP  o

char *
COP_stashpv(o)
    B::COP  o

B::HV
COP_stash(o)
    B::COP  o

char *
COP_file(o)
    B::COP  o

B::GV
COP_filegv(o)
       B::COP  o


U32
COP_cop_seq(o)
    B::COP  o

I32
COP_arybase(o)
    B::COP  o

U32
COP_line(o)
    B::COP  o

B::SV
COP_warnings(o)
    B::COP  o

B::SV
COP_io(o)
    B::COP  o

MODULE = B  PACKAGE = B::SV

U32
SvTYPE(sv)
    B::SV   sv

#define object_2svref(sv)   sv
#define SVREF SV *

SVREF
object_2svref(sv)
    B::SV   sv

MODULE = B  PACKAGE = B::SV     PREFIX = Sv

U32
SvREFCNT(sv)
    B::SV   sv

U32
SvFLAGS(sv)
    B::SV   sv

U32
SvPOK(sv)
    B::SV   sv

U32
SvROK(sv)
    B::SV   sv

U32
SvMAGICAL(sv)
    B::SV   sv

MODULE = B  PACKAGE = B::IV     PREFIX = Sv

IV
SvIV(sv)
    B::IV   sv

IV
SvIVX(sv)
    B::IV   sv

UV
SvUVX(sv)
    B::IV   sv


MODULE = B  PACKAGE = B::IV

#define needs64bits(sv) ((I32)SvIVX(sv) != SvIVX(sv))

int
needs64bits(sv)
    B::IV   sv

void
packiv(sv)
    B::IV   sv
    CODE:
    if (sizeof(IV) == 8) {
        U32 wp[2];
        IV iv = SvIVX(sv);
        /*
         * The following way of spelling 32 is to stop compilers on
         * 32-bit architectures from moaning about the shift count
         * being >= the width of the type. Such architectures don't
         * reach this code anyway (unless sizeof(IV) > 8 but then
         * everything else breaks too so I'm not fussed at the moment).
         */
#ifdef UV_IS_QUAD
        wp[0] = htonl(((UV)iv) >> (sizeof(UV)*4));
#else
        wp[0] = htonl(((U32)iv) >> (sizeof(UV)*4));
#endif
        wp[1] = htonl(iv & 0xffffffff);
        ST(0) = sv_2mortal(newSVpvn((char *)wp, 8));
    } else {
        U32 w = htonl((U32)SvIVX(sv));
        ST(0) = sv_2mortal(newSVpvn((char *)&w, 4));
    }

MODULE = B  PACKAGE = B::NV     PREFIX = Sv

NV
SvNV(sv)
    B::NV   sv

NV
SvNVX(sv)
    B::NV   sv

MODULE = B  PACKAGE = B::RV     PREFIX = Sv

B::SV
SvRV(sv)
    B::RV   sv

MODULE = B  PACKAGE = B::PV     PREFIX = Sv

char*
SvPVX(sv)
    B::PV   sv

B::SV
SvRV(sv)
        B::PV   sv
    CODE:
        if( SvROK(sv) ) {
            RETVAL = SvRV(sv);
        }
        else {
            croak( "argument is not SvROK" );
        }
    OUTPUT:
        RETVAL

void
SvPV(sv)
    B::PV   sv
    CODE:
        ST(0) = sv_newmortal();
        if( SvPOK(sv) ) {
            sv_setpvn(ST(0), SvPVX(sv), SvCUR(sv));
            SvFLAGS(ST(0)) |= SvUTF8(sv);
        }
        else {
            /* XXX for backward compatibility, but should fail */
            /* croak( "argument is not SvPOK" ); */
            sv_setpvn(ST(0), NULL, 0);
        }

void
SvPVBM(sv)
    B::PV   sv
    CODE:
        ST(0) = sv_newmortal();
    sv_setpvn(ST(0), SvPVX(sv),
        SvCUR(sv) + (SvTYPE(sv) == SVt_PVBM ? 257 : 0));


STRLEN
SvLEN(sv)
    B::PV   sv

STRLEN
SvCUR(sv)
    B::PV   sv

MODULE = B  PACKAGE = B::PVMG   PREFIX = Sv

void
SvMAGIC(sv)
    B::PVMG sv
    MAGIC * mg = NO_INIT
    PPCODE:
    for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic)
        XPUSHs(make_mg_object(aTHX_ sv_newmortal(), mg));

MODULE = B  PACKAGE = B::PVMG

B::HV
SvSTASH(sv)
    B::PVMG sv

#define MgMOREMAGIC(mg) mg->mg_moremagic
#define MgPRIVATE(mg) mg->mg_private
#define MgTYPE(mg) mg->mg_type
#define MgFLAGS(mg) mg->mg_flags
#define MgOBJ(mg) mg->mg_obj
#define MgLENGTH(mg) mg->mg_len
#define MgREGEX(mg) PTR2IV(mg->mg_obj)

MODULE = B  PACKAGE = B::MAGIC  PREFIX = Mg

B::MAGIC
MgMOREMAGIC(mg)
    B::MAGIC    mg
     CODE:
    if( MgMOREMAGIC(mg) ) {
        RETVAL = MgMOREMAGIC(mg);
    }
    else {
        XSRETURN_UNDEF;
    }
     OUTPUT:
    RETVAL

U16
MgPRIVATE(mg)
    B::MAGIC    mg

char
MgTYPE(mg)
    B::MAGIC    mg

U8
MgFLAGS(mg)
    B::MAGIC    mg

B::SV
MgOBJ(mg)
    B::MAGIC    mg

IV
MgREGEX(mg)
    B::MAGIC    mg
    CODE:
        if( mg->mg_type == 'r' ) {
            RETVAL = MgREGEX(mg);
        }
        else {
            croak( "REGEX is only meaningful on r-magic" );
        }
    OUTPUT:
        RETVAL

SV*
precomp(mg)
        B::MAGIC        mg
    CODE:
        if (mg->mg_type == 'r') {
            REGEXP* rx = (REGEXP*)mg->mg_obj;
            if( rx )
                RETVAL = newSVpvn( rx->precomp, rx->prelen );
        }
        else {
            croak( "precomp is only meaningful on r-magic" );
        }
    OUTPUT:
        RETVAL

I32
MgLENGTH(mg)
    B::MAGIC    mg

void
MgPTR(mg)
    B::MAGIC    mg
    CODE:
    ST(0) = sv_newmortal();
    if (mg->mg_ptr){
        if (mg->mg_len >= 0){
                sv_setpvn(ST(0), mg->mg_ptr, mg->mg_len);
        } else if (mg->mg_len == HEf_SVKEY) {
            ST(0) = make_sv_object(aTHX_
                    sv_newmortal(), (SV*)mg->mg_ptr);
        }
    }

MODULE = B  PACKAGE = B::PVLV   PREFIX = Lv

U32
LvTARGOFF(sv)
    B::PVLV sv

U32
LvTARGLEN(sv)
    B::PVLV sv

char
LvTYPE(sv)
    B::PVLV sv

B::SV
LvTARG(sv)
    B::PVLV sv

MODULE = B  PACKAGE = B::BM     PREFIX = Bm

I32
BmUSEFUL(sv)
    B::BM   sv

U16
BmPREVIOUS(sv)
    B::BM   sv

U8
BmRARE(sv)
    B::BM   sv

void
BmTABLE(sv)
    B::BM   sv
    STRLEN  len = NO_INIT
    char *  str = NO_INIT
    CODE:
    str = SvPV(sv, len);
    /* Boyer-Moore table is just after string and its safety-margin \0 */
    ST(0) = sv_2mortal(newSVpvn(str + len + 1, 256));

MODULE = B  PACKAGE = B::GV     PREFIX = Gv

void
GvNAME(gv)
    B::GV   gv
    CODE:
    ST(0) = sv_2mortal(newSVpvn(GvNAME(gv), GvNAMELEN(gv)));

bool
is_empty(gv)
        B::GV   gv
    CODE:
        RETVAL = GvGP(gv) == Null(GP*);
    OUTPUT:
        RETVAL

void*
GvGP(gv)
    B::GV   gv

B::HV
GvSTASH(gv)
    B::GV   gv

B::SV
GvSV(gv)
    B::GV   gv

B::IO
GvIO(gv)
    B::GV   gv

B::FM
GvFORM(gv)
    B::GV   gv
    CODE:
    RETVAL = (SV*)GvFORM(gv);
    OUTPUT:
    RETVAL

B::AV
GvAV(gv)
    B::GV   gv

B::HV
GvHV(gv)
    B::GV   gv

B::GV
GvEGV(gv)
    B::GV   gv

B::CV
GvCV(gv)
    B::GV   gv

U32
GvCVGEN(gv)
    B::GV   gv

U32
GvLINE(gv)
    B::GV   gv

char *
GvFILE(gv)
    B::GV   gv

B::GV
GvFILEGV(gv)
    B::GV   gv

MODULE = B  PACKAGE = B::GV

U32
GvREFCNT(gv)
    B::GV   gv

U8
GvFLAGS(gv)
    B::GV   gv

MODULE = B  PACKAGE = B::IO     PREFIX = Io

long
IoLINES(io)
    B::IO   io

long
IoPAGE(io)
    B::IO   io

long
IoPAGE_LEN(io)
    B::IO   io

long
IoLINES_LEFT(io)
    B::IO   io

char *
IoTOP_NAME(io)
    B::IO   io

B::GV
IoTOP_GV(io)
    B::IO   io

char *
IoFMT_NAME(io)
    B::IO   io

B::GV
IoFMT_GV(io)
    B::IO   io

char *
IoBOTTOM_NAME(io)
    B::IO   io

B::GV
IoBOTTOM_GV(io)
    B::IO   io

short
IoSUBPROCESS(io)
    B::IO   io

bool
IsSTD(io,name)
    B::IO   io
    char*   name
    PREINIT:
    PerlIO* handle = 0;
    CODE:
    if( strEQ( name, "stdin" ) ) {
        handle = PerlIO_stdin();
    }
    else if( strEQ( name, "stdout" ) ) {
        handle = PerlIO_stdout();
    }
    else if( strEQ( name, "stderr" ) ) {
        handle = PerlIO_stderr();
    }
    else {
        croak( "Invalid value '%s'", name );
    }
    RETVAL = handle == IoIFP(io);
    OUTPUT:
    RETVAL

MODULE = B  PACKAGE = B::IO

char
IoTYPE(io)
    B::IO   io

U8
IoFLAGS(io)
    B::IO   io

MODULE = B  PACKAGE = B::AV     PREFIX = Av

SSize_t
AvFILL(av)
    B::AV   av

SSize_t
AvMAX(av)
    B::AV   av

#define AvOFF(av) ((XPVAV*)SvANY(av))->xof_off

IV
AvOFF(av)
    B::AV   av

void
AvARRAY(av)
    B::AV   av
    PPCODE:
    if (AvFILL(av) >= 0) {
        SV **svp = AvARRAY(av);
        I32 i;
        for (i = 0; i <= AvFILL(av); i++)
        XPUSHs(make_sv_object(aTHX_ sv_newmortal(), svp[i]));
    }

void
AvARRAYelt(av, idx)
    B::AV   av
    int idx
    PPCODE:
        if (idx >= 0 && AvFILL(av) >= 0 && idx <= AvFILL(av))
        XPUSHs(make_sv_object(aTHX_ sv_newmortal(), (AvARRAY(av)[idx])));
    else
        XPUSHs(make_sv_object(aTHX_ sv_newmortal(), NULL));


MODULE = B  PACKAGE = B::AV

U8
AvFLAGS(av)
    B::AV   av

MODULE = B  PACKAGE = B::FM     PREFIX = Fm

IV
FmLINES(form)
    B::FM   form

MODULE = B  PACKAGE = B::CV     PREFIX = Cv

U32
CvCONST(cv)
    B::CV   cv

B::HV
CvSTASH(cv)
    B::CV   cv

B::OP
CvSTART(cv)
    B::CV   cv

B::OP
CvROOT(cv)
    B::CV   cv

B::GV
CvGV(cv)
    B::CV   cv

char *
CvFILE(cv)
    B::CV   cv

long
CvDEPTH(cv)
    B::CV   cv

B::AV
CvPADLIST(cv)
    B::CV   cv

B::CV
CvOUTSIDE(cv)
    B::CV   cv

U32
CvOUTSIDE_SEQ(cv)
    B::CV   cv

void
CvXSUB(cv)
    B::CV   cv
    CODE:
    ST(0) = sv_2mortal(newSViv(PTR2IV(CvXSUB(cv))));


void
CvXSUBANY(cv)
    B::CV   cv
    CODE:
    ST(0) = CvCONST(cv) ?
        make_sv_object(aTHX_ sv_newmortal(),CvXSUBANY(cv).any_ptr) :
        sv_2mortal(newSViv(CvXSUBANY(cv).any_iv));

MODULE = B    PACKAGE = B::CV

U16
CvFLAGS(cv)
      B::CV   cv

MODULE = B  PACKAGE = B::CV     PREFIX = cv_

B::SV
cv_const_sv(cv)
    B::CV   cv


MODULE = B  PACKAGE = B::HV     PREFIX = Hv

STRLEN
HvFILL(hv)
    B::HV   hv

STRLEN
HvMAX(hv)
    B::HV   hv

I32
HvKEYS(hv)
    B::HV   hv

I32
HvRITER(hv)
    B::HV   hv

char *
HvNAME(hv)
    B::HV   hv

B::PMOP
HvPMROOT(hv)
    B::HV   hv

void
HvARRAY(hv)
    B::HV   hv
    PPCODE:
    if (HvKEYS(hv) > 0) {
        SV *sv;
        char *key;
        I32 len;
        (void)hv_iterinit(hv);
        EXTEND(sp, HvKEYS(hv) * 2);
        while ((sv = hv_iternextsv(hv, &key, &len))) {
        PUSHs(newSVpvn(key, len));
        PUSHs(make_sv_object(aTHX_ sv_newmortal(), sv));
        }
    }