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#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
#include "ptable.h"
/* this gets weird segfaults on 5.8, and I have no idea why */
#if PERL_REVISION == 5 && (PERL_VERSION >= 10)
#define DH_ALLOW_SUB_PARAMETERS
#endif
#ifndef CopFILEGV_set
#define CopFILEGV_set(c, gv) ;; /* noop */
#endif
#ifndef CopARYBASE_get
#define CopARYBASE_get(c) c->cop_arybase
#endif
#ifndef CopARYBASE_set
#define CopARYBASE_set(c,v) c->cop_arybase = v
#endif
#if PERL_REVISION == 5 && (PERL_VERSION >= 10)
#define DH_PMOP_STASHSTARTU(o) o->op_pmstashstartu.op_pmreplstart
#else
#define DH_PMOP_STASHSTARTU(o) o->op_pmreplstart
#endif
#ifdef DH_ALLOW_SUB_PARAMETERS
#define SET(m,s) \
do { \
if (set) { \
if (apply_to_all) { \
m ## _value = value; \
walk_optree((OP*)cop, cop_ ## m ## _r); \
} \
else { \
s; \
} \
} \
} while (0)
#else
#define SET(m,s) if (set) s
#endif
#define CALL_IMPL(m) \
if (GIMME_V == G_VOID && items < 2) \
XSRETURN(0); \
RETVAL = cop_ ## m(mycop(code), value, items >= 2, code && SvROK(code))
#ifdef DH_ALLOW_SUB_PARAMETERS
#define WALK_OPTREE_CB(m,t) \
static t m ## _value; \
static void cop_ ## m ## _r(OP *op) \
{ \
if (op->op_type == OP_NEXTSTATE) { \
COP *cop = (COP*)op; \
cop_ ## m(cop, m ## _value, 1, 0); \
} \
}
typedef void (*walk_optree_cb_t)(OP*);
char *cop_stashpv(COP *cop, char *value, int set, int apply_to_all);
HV *cop_stash(COP *cop, HV *value, int set, int apply_to_all);
char *cop_file(COP *cop, char *value, int set, int apply_to_all);
GV *cop_filegv(COP *cop, GV *value, int set, int apply_to_all);
UV cop_seq(COP *cop, UV value, int set, int apply_to_all);
I32 cop_arybase(COP *cop, I32 value, int set, int apply_to_all);
U16 cop_line(COP *cop, U16 value, int set, int apply_to_all);
SV *cop_warnings(COP *cop, SV *value, int set, int apply_to_all);
SV *cop_io(COP *cop, SV *value, int set, int apply_to_all);
WALK_OPTREE_CB(stashpv, char*)
WALK_OPTREE_CB(stash, HV*)
WALK_OPTREE_CB(filegv, GV*)
/* XXX: should cop_seq be incremented, like cop_line is? */
WALK_OPTREE_CB(seq, UV)
WALK_OPTREE_CB(arybase, I32)
WALK_OPTREE_CB(warnings, SV*)
WALK_OPTREE_CB(io, SV*)
/* needs some custom behavior */
static U16 line_value;
static U16 line_base_value;
static char *line_base_file;
static void cop_line_r(OP *op)
{
if (op->op_type == OP_NEXTSTATE &&
!strcmp(line_base_file, cop_file((COP*)op, NULL, 0, 0))) {
COP *cop = (COP*)op;
cop_line(cop, line_value - line_base_value + cop_line(cop, 0, 0, 0),
1, 0);
}
}
static char *file_value;
static char *file_base;
static void cop_file_r(OP *op)
{
if (op->op_type == OP_NEXTSTATE &&
!strcmp(file_base, cop_file((COP*)op, NULL, 0, 0))) {
COP *cop = (COP*)op;
cop_file(cop, file_value, 1, 0);
}
}
static void _walk_optree(OP *o, walk_optree_cb_t cb, ptable *visited)
{
for (; o; o = o->op_next) {
if (ptable_fetch(visited, o))
return;
ptable_store(visited, o, o);
cb(o);
switch (PL_opargs[o->op_type] & OA_CLASS_MASK) {
case OA_LOGOP:
_walk_optree(cLOGOPo->op_other, cb, visited);
break;
case OA_LOOP:
_walk_optree(cLOOPo->op_redoop, cb, visited);
_walk_optree(cLOOPo->op_nextop, cb, visited);
_walk_optree(cLOOPo->op_lastop, cb, visited);
break;
case OA_PMOP:
if (o->op_type == OP_SUBST)
_walk_optree(DH_PMOP_STASHSTARTU(cPMOPo), cb, visited);
break;
}
}
}
void walk_optree(OP *o, walk_optree_cb_t cb)
{
ptable *visited = ptable_new();
_walk_optree(o, cb, visited);
ptable_free(visited);
}
#endif
COP* mycop(SV* code)
{
#ifdef DH_ALLOW_SUB_PARAMETERS
if (code && SvROK(code)) {
if (SvTYPE(SvRV(code)) == SVt_PVCV) {
code = SvRV(code);
return (COP*)CvSTART(code);
}
else {
croak("unknown reference type");
}
}
else {
#endif
int count;
count = code && SvIOK(code) ? SvIV(code) : 0;
if (count <= 0) {
return PL_curcop;
}
else {
return cxstack[cxstack_ix - count + 1].blk_oldcop;
}
#ifdef DH_ALLOW_SUB_PARAMETERS
}
#endif
}
char *cop_label(COP *cop, char *value, int set, int apply_to_all)
{
#ifdef CopLABEL
return (char *) CopLABEL(cop);
#else
if (set)
cop->cop_label = strdup(value);
return cop->cop_label ? cop->cop_label : Nullch;
#endif
}
char *cop_stashpv(COP *cop, char *value, int set, int apply_to_all)
{
SET(stashpv, CopSTASHPV_set(cop, value));
return CopSTASHPV(cop);
}
HV *cop_stash(COP *cop, HV *value, int set, int apply_to_all)
{
SET(stash, CopSTASH_set(cop, value));
return CopSTASH(cop);
}
char *cop_file(COP *cop, char *value, int set, int apply_to_all)
{
if (set) {
#ifdef DH_ALLOW_SUB_PARAMETERS
if (apply_to_all) {
file_value = value;
file_base = cop_file(cop, NULL, 0, 0);
walk_optree((OP*)cop, cop_file_r);
}
else
#endif
CopFILE_set(cop, value);
}
return CopFILE(cop);
}
GV *cop_filegv(COP *cop, GV *value, int set, int apply_to_all)
{
SET(filegv, CopFILEGV_set(cop, value));
return CopFILEGV(cop);
}
UV cop_seq(COP *cop, UV value, int set, int apply_to_all)
{
SET(seq, cop->cop_seq = value);
return cop->cop_seq;
}
I32 cop_arybase(COP *cop, I32 value, int set, int apply_to_all)
{
SET(arybase, CopARYBASE_set(cop, value));
return CopARYBASE_get(cop);
}
U16 cop_line(COP *cop, U16 value, int set, int apply_to_all)
{
if (set) {
#ifdef DH_ALLOW_SUB_PARAMETERS
if (apply_to_all) {
line_value = value;
line_base_value = cop_line(cop, 0, 0, 0);
line_base_file = cop_file(cop, NULL, 0, 0);
walk_optree((OP*)cop, cop_line_r);
}
else
#endif
cop->cop_line = value;
}
return cop->cop_line;
}
SV *cop_warnings(COP *cop, SV *value, int set, int apply_to_all)
{
#if PERL_REVISION == 5 && (PERL_VERSION >= 10)
return &PL_sv_undef;
#else
SET(warnings, cop->cop_warnings = newSVsv(value));
if ( PTR2UV(cop->cop_warnings) > 255 ) {
/* pointer to the lexical SV */
return SvREFCNT_inc(cop->cop_warnings);
}
else {
/* UV of global warnings flags */
return newSVuv( PTR2UV(cop->cop_warnings) );
}
#endif
}
SV *cop_io(COP *cop, SV *value, int set, int apply_to_all)
{
#if PERL_REVISION == 5 && (PERL_VERSION >= 7 && PERL_VERSION < 10)
SET(io, cop->cop_io = newSVsv(value));
return cop->cop_io ? SvREFCNT_inc(cop->cop_io) : newSVpvn("", 0);
#else
return &PL_sv_undef;
#endif
}
MODULE = Devel::Hints PACKAGE = Devel::Hints
char *
cop_label(code=NULL, value=NULL)
SV* code
char* value
CODE:
if (items >= 2 && SvROK(code))
croak("Can't set the label of a coderef");
CALL_IMPL(label);
OUTPUT:
RETVAL
char *
cop_stashpv(code=NULL, value=NULL)
SV* code
char* value
CODE:
CALL_IMPL(stashpv);
OUTPUT:
RETVAL
HV *
cop_stash(code=NULL, value=NULL)
SV* code
HV* value
CODE:
CALL_IMPL(stash);
OUTPUT:
RETVAL
char *
cop_file(code=NULL, value=NULL)
SV* code
char* value
CODE:
CALL_IMPL(file);
OUTPUT:
RETVAL
GV *
cop_filegv(code=NULL, value=NULL)
SV* code
GV* value
CODE:
CALL_IMPL(filegv);
OUTPUT:
RETVAL
UV
cop_seq(code=NULL, value=0)
SV* code
UV value
CODE:
CALL_IMPL(seq);
OUTPUT:
RETVAL
I32
cop_arybase(code=NULL, value=0)
SV* code
I32 value
CODE:
CALL_IMPL(arybase);
OUTPUT:
RETVAL
U16
cop_line(code=NULL, value=0)
SV* code
U16 value
CODE:
CALL_IMPL(line);
OUTPUT:
RETVAL
SV *
cop_warnings(code=NULL, value=NULL)
SV* code
SV* value
CODE:
CALL_IMPL(warnings);
OUTPUT:
RETVAL
SV *
cop_io(code=NULL, value=NULL)
SV* code
SV* value
CODE:
CALL_IMPL(io);
OUTPUT:
RETVAL