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PPPort.pm
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package Devel::PPPort;
=head1 NAME
Devel::PPPort - Perl/Pollution/Portability
=head1 SYNOPSIS
Devel::PPPort::WriteFile() ; # defaults to ./ppport.h
Devel::PPPort::WriteFile('someheader.h') ;
=head1 DESCRIPTION
Perl has changed over time, gaining new features, new functions,
increasing its flexibility, and reducing the impact on the C namespace
environment (reduced pollution). The header file, typicaly C<ppport.h>,
written by this module attempts to bring some of the newer Perl
features to older versions of Perl, so that you can worry less about
keeping track of old releases, but users can still reap the benefit.
Why you should use C<ppport.h> in modern code: so that your code will work
with the widest range of Perl interpreters possible, without significant
additional work.
Why you should attempt older code to fully use C<ppport.h>: because
the reduced pollution of newer Perl versions is an important thing, so
important that the old polluting ways of original Perl modules will not be
supported very far into the future, and your module will almost certainly
break! By adapting to it now, you'll gained compatibility and a sense of
having done the electronic ecology some good.
How to use ppport.h: Don't direct the user to download C<Devel::PPPort>,
and don't make C<ppport.h> optional. Rather, just take the most recent
copy of C<ppport.h> that you can find (probably in C<Devel::PPPort>
on CPAN), copy it into your project, adjust your project to use it,
and distribute the header along with your module.
C<Devel::PPPort> contains a single function, called C<WriteFile>. It's
purpose is to write a 'C' header file that is used when writing XS
modules. The file contains a series of macros that allow XS modules to
be built using older versions of Perl.
This module is used by h2xs to write the file F<ppport.h>.
=head2 WriteFile
C<WriteFile> takes a zero or one parameters. When called with one
parameter it expects to be passed a filename. When called with no
parameters, it defults to the filename C<./pport.h>.
The function returns TRUE if the file was written successfully. Otherwise
it returns FALSE.
=head1 ppport.h
The file written by this module, typically C<ppport.h>, provides access
to the following Perl API if not already available (and in some cases [*]
even if available, access to a fixed interface):
aMY_CXT
aMY_CXT_
_aMY_CXT
aTHX
aTHX_
AvFILLp
boolSV(b)
call_argv
call_method
call_pv
call_sv
DEFSV
dMY_CXT
dMY_CXT_SV
dNOOP
dTHR
dTHX
dTHXa
dTHXoa
ERRSV
get_av
get_cv
get_hv
get_sv
grok_hex
grok_oct
grok_bin
grok_number
grok_numeric_radix
gv_stashpvn(str,len,flags)
INT2PTR(type,int)
IVdf
MY_CXT
MY_CXT_INIT
newCONSTSUB(stash,name,sv)
newRV_inc(sv)
newRV_noinc(sv)
newSVpvn(data,len)
NOOP
NV
NVef
NVff
NVgf
PERL_REVISION
PERL_SUBVERSION
PERL_UNUSED_DECL
PERL_VERSION
PL_compiling
PL_copline
PL_curcop
PL_curstash
PL_defgv
PL_dirty
PL_hints
PL_na
PL_perldb
PL_rsfp_filters
PL_rsfpv
PL_stdingv
PL_Sv
PL_sv_no
PL_sv_undef
PL_sv_yes
pMY_CXT
pMY_CXT_
_pMY_CXT
pTHX
pTHX_
PTR2IV(ptr)
PTR2NV(ptr)
PTR2ul(ptr)
PTR2UV(ptr)
SAVE_DEFSV
START_MY_CXT
SvPVbyte(sv,lp) [*]
UVof
UVSIZE
UVuf
UVxf
UVXf
=head1 AUTHOR
Version 1.x of Devel::PPPort was written by Kenneth Albanowski.
Version 2.x was ported to the Perl core by Paul Marquess.
=head1 SEE ALSO
See L<h2xs>.
=cut
package Devel::PPPort;
require Exporter;
require DynaLoader;
#use warnings;
use strict;
use vars qw( $VERSION @ISA @EXPORT @EXPORT_OK $data );
$VERSION = "2.009";
@ISA = qw(Exporter DynaLoader);
@EXPORT = qw();
# Other items we are prepared to export if requested
@EXPORT_OK = qw( );
bootstrap Devel::PPPort;
package Devel::PPPort;
{
local $/ = undef;
$data = <DATA> ;
my $now = localtime;
my $pkg = __PACKAGE__;
$data =~ s/__VERSION__/$VERSION/g;
$data =~ s/__DATE__/$now/g;
$data =~ s/__PKG__/$pkg/g;
}
sub WriteFile
{
my $file = shift || 'ppport.h' ;
open F, ">$file" || return undef ;
print F $data ;
close F;
return 1 ;
}
1;
__DATA__;
/* ppport.h -- Perl/Pollution/Portability Version __VERSION__
*
* Automatically Created by __PKG__ on __DATE__
*
* Do NOT edit this file directly! -- Edit PPPort.pm instead.
*
* Version 2.x, Copyright (C) 2001, Paul Marquess.
* Version 1.x, Copyright (C) 1999, Kenneth Albanowski.
* This code may be used and distributed under the same license as any
* version of Perl.
*
* This version of ppport.h is designed to support operation with Perl
* installations back to 5.004, and has been tested up to 5.8.1.
*
* If this version of ppport.h is failing during the compilation of this
* module, please check if a newer version of Devel::PPPort is available
* on CPAN before sending a bug report.
*
* If you are using the latest version of Devel::PPPort and it is failing
* during compilation of this module, please send a report to perlbug@perl.com
*
* Include all following information:
*
* 1. The complete output from running "perl -V"
*
* 2. This file.
*
* 3. The name & version of the module you were trying to build.
*
* 4. A full log of the build that failed.
*
* 5. Any other information that you think could be relevant.
*
*
* For the latest version of this code, please retreive the Devel::PPPort
* module from CPAN.
*
*/
/*
* In order for a Perl extension module to be as portable as possible
* across differing versions of Perl itself, certain steps need to be taken.
* Including this header is the first major one, then using dTHR is all the
* appropriate places and using a PL_ prefix to refer to global Perl
* variables is the second.
*
*/
/* If you use one of a few functions that were not present in earlier
* versions of Perl, please add a define before the inclusion of ppport.h
* for a static include, or use the GLOBAL request in a single module to
* produce a global definition that can be referenced from the other
* modules.
*
* Function: Static define: Extern define:
* newCONSTSUB() NEED_newCONSTSUB NEED_newCONSTSUB_GLOBAL
*
*/
/* To verify whether ppport.h is needed for your module, and whether any
* special defines should be used, ppport.h can be run through Perl to check
* your source code. Simply say:
*
* perl -x ppport.h *.c *.h *.xs foo/bar*.c [etc]
*
* The result will be a list of patches suggesting changes that should at
* least be acceptable, if not necessarily the most efficient solution, or a
* fix for all possible problems. It won't catch where dTHR is needed, and
* doesn't attempt to account for global macro or function definitions,
* nested includes, typemaps, etc.
*
* In order to test for the need of dTHR, please try your module under a
* recent version of Perl that has threading compiled-in.
*
*/
/*
#!/usr/bin/perl
@ARGV = ("*.xs") if !@ARGV;
%badmacros = %funcs = %macros = (); $replace = 0;
foreach (<DATA>) {
$funcs{$1} = 1 if /Provide:\s+(\S+)/;
$macros{$1} = 1 if /^#\s*define\s+([a-zA-Z0-9_]+)/;
$replace = $1 if /Replace:\s+(\d+)/;
$badmacros{$2}=$1 if $replace and /^#\s*define\s+([a-zA-Z0-9_]+).*?\s+([a-zA-Z0-9_]+)/;
$badmacros{$1}=$2 if /Replace (\S+) with (\S+)/;
}
foreach $filename (map(glob($_),@ARGV)) {
unless (open(IN, "<$filename")) {
warn "Unable to read from $file: $!\n";
next;
}
print "Scanning $filename...\n";
$c = ""; while (<IN>) { $c .= $_; } close(IN);
$need_include = 0; %add_func = (); $changes = 0;
$has_include = ($c =~ /#.*include.*ppport/m);
foreach $func (keys %funcs) {
if ($c =~ /#.*define.*\bNEED_$func(_GLOBAL)?\b/m) {
if ($c !~ /\b$func\b/m) {
print "If $func isn't needed, you don't need to request it.\n" if
$changes += ($c =~ s/^.*#.*define.*\bNEED_$func\b.*\n//m);
} else {
print "Uses $func\n";
$need_include = 1;
}
} else {
if ($c =~ /\b$func\b/m) {
$add_func{$func} =1 ;
print "Uses $func\n";
$need_include = 1;
}
}
}
if (not $need_include) {
foreach $macro (keys %macros) {
if ($c =~ /\b$macro\b/m) {
print "Uses $macro\n";
$need_include = 1;
}
}
}
foreach $badmacro (keys %badmacros) {
if ($c =~ /\b$badmacro\b/m) {
$changes += ($c =~ s/\b$badmacro\b/$badmacros{$badmacro}/gm);
print "Uses $badmacros{$badmacro} (instead of $badmacro)\n";
$need_include = 1;
}
}
if (scalar(keys %add_func) or $need_include != $has_include) {
if (!$has_include) {
$inc = join('',map("#define NEED_$_\n", sort keys %add_func)).
"#include \"ppport.h\"\n";
$c = "$inc$c" unless $c =~ s/#.*include.*XSUB.*\n/$&$inc/m;
} elsif (keys %add_func) {
$inc = join('',map("#define NEED_$_\n", sort keys %add_func));
$c = "$inc$c" unless $c =~ s/^.*#.*include.*ppport.*$/$inc$&/m;
}
if (!$need_include) {
print "Doesn't seem to need ppport.h.\n";
$c =~ s/^.*#.*include.*ppport.*\n//m;
}
$changes++;
}
if ($changes) {
open(OUT,">/tmp/ppport.h.$$");
print OUT $c;
close(OUT);
open(DIFF, "diff -u $filename /tmp/ppport.h.$$|");
while (<DIFF>) { s!/tmp/ppport\.h\.$$!$filename.patched!; print STDOUT; }
close(DIFF);
unlink("/tmp/ppport.h.$$");
} else {
print "Looks OK\n";
}
}
__DATA__
*/
#ifndef _P_P_PORTABILITY_H_
#define _P_P_PORTABILITY_H_
#ifndef PERL_REVISION
# ifndef __PATCHLEVEL_H_INCLUDED__
# include <patchlevel.h>
# endif
# if !(defined(PERL_VERSION) || (SUBVERSION > 0 && defined(PATCHLEVEL)))
# include <could_not_find_Perl_patchlevel.h>
# endif
# ifndef PERL_REVISION
# define PERL_REVISION (5)
/* Replace: 1 */
# define PERL_VERSION PATCHLEVEL
# define PERL_SUBVERSION SUBVERSION
/* Replace PERL_PATCHLEVEL with PERL_VERSION */
/* Replace: 0 */
# endif
#endif
#define PERL_BCDVERSION ((PERL_REVISION * 0x1000000L) + (PERL_VERSION * 0x1000L) + PERL_SUBVERSION)
/* It is very unlikely that anyone will try to use this with Perl 6
(or greater), but who knows.
*/
#if PERL_REVISION != 5
# error ppport.h only works with Perl version 5
#endif /* PERL_REVISION != 5 */
#ifndef ERRSV
# define ERRSV perl_get_sv("@",FALSE)
#endif
#if (PERL_VERSION < 4) || ((PERL_VERSION == 4) && (PERL_SUBVERSION <= 5))
/* Replace: 1 */
# define PL_Sv Sv
# define PL_compiling compiling
# define PL_copline copline
# define PL_curcop curcop
# define PL_curstash curstash
# define PL_defgv defgv
# define PL_dirty dirty
# define PL_dowarn dowarn
# define PL_hints hints
# define PL_na na
# define PL_perldb perldb
# define PL_rsfp_filters rsfp_filters
# define PL_rsfpv rsfp
# define PL_stdingv stdingv
# define PL_sv_no sv_no
# define PL_sv_undef sv_undef
# define PL_sv_yes sv_yes
/* Replace: 0 */
#endif
#ifdef HASATTRIBUTE
# if (defined(__GNUC__) && defined(__cplusplus)) || defined(__INTEL_COMPILER)
# define PERL_UNUSED_DECL
# else
# define PERL_UNUSED_DECL __attribute__((unused))
# endif
#else
# define PERL_UNUSED_DECL
#endif
#ifndef dNOOP
# define NOOP (void)0
# define dNOOP extern int Perl___notused PERL_UNUSED_DECL
#endif
#ifndef dTHR
# define dTHR dNOOP
#endif
#ifndef dTHX
# define dTHX dNOOP
# define dTHXa(x) dNOOP
# define dTHXoa(x) dNOOP
#endif
#ifndef pTHX
# define pTHX void
# define pTHX_
# define aTHX
# define aTHX_
#endif
/* IV could also be a quad (say, a long long), but Perls
* capable of those should have IVSIZE already. */
#if !defined(IVSIZE) && defined(LONGSIZE)
# define IVSIZE LONGSIZE
#endif
#ifndef IVSIZE
# define IVSIZE 4 /* A bold guess, but the best we can make. */
#endif
#ifndef UVSIZE
# define UVSIZE IVSIZE
#endif
#ifndef NVTYPE
# if defined(USE_LONG_DOUBLE) && defined(HAS_LONG_DOUBLE)
# define NVTYPE long double
# else
# define NVTYPE double
# endif
typedef NVTYPE NV;
#endif
#ifndef INT2PTR
#if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
# define PTRV UV
# define INT2PTR(any,d) (any)(d)
#else
# if PTRSIZE == LONGSIZE
# define PTRV unsigned long
# else
# define PTRV unsigned
# endif
# define INT2PTR(any,d) (any)(PTRV)(d)
#endif
#define NUM2PTR(any,d) (any)(PTRV)(d)
#define PTR2IV(p) INT2PTR(IV,p)
#define PTR2UV(p) INT2PTR(UV,p)
#define PTR2NV(p) NUM2PTR(NV,p)
#if PTRSIZE == LONGSIZE
# define PTR2ul(p) (unsigned long)(p)
#else
# define PTR2ul(p) INT2PTR(unsigned long,p)
#endif
#endif /* !INT2PTR */
#ifndef boolSV
# define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)
#endif
#ifndef gv_stashpvn
# define gv_stashpvn(str,len,flags) gv_stashpv(str,flags)
#endif
#ifndef newSVpvn
# define newSVpvn(data,len) ((len) ? newSVpv ((data), (len)) : newSVpv ("", 0))
#endif
#ifndef newRV_inc
/* Replace: 1 */
# define newRV_inc(sv) newRV(sv)
/* Replace: 0 */
#endif
/* DEFSV appears first in 5.004_56 */
#ifndef DEFSV
# define DEFSV GvSV(PL_defgv)
#endif
#ifndef SAVE_DEFSV
# define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
#endif
#ifndef newRV_noinc
# ifdef __GNUC__
# define newRV_noinc(sv) \
({ \
SV *nsv = (SV*)newRV(sv); \
SvREFCNT_dec(sv); \
nsv; \
})
# else
# if defined(USE_THREADS)
static SV * newRV_noinc (SV * sv)
{
SV *nsv = (SV*)newRV(sv);
SvREFCNT_dec(sv);
return nsv;
}
# else
# define newRV_noinc(sv) \
(PL_Sv=(SV*)newRV(sv), SvREFCNT_dec(sv), (SV*)PL_Sv)
# endif
# endif
#endif
/* Provide: newCONSTSUB */
/* newCONSTSUB from IO.xs is in the core starting with 5.004_63 */
#if (PERL_VERSION < 4) || ((PERL_VERSION == 4) && (PERL_SUBVERSION < 63))
#if defined(NEED_newCONSTSUB)
static
#else
extern void newCONSTSUB(HV * stash, char * name, SV *sv);
#endif
#if defined(NEED_newCONSTSUB) || defined(NEED_newCONSTSUB_GLOBAL)
void
newCONSTSUB(stash,name,sv)
HV *stash;
char *name;
SV *sv;
{
U32 oldhints = PL_hints;
HV *old_cop_stash = PL_curcop->cop_stash;
HV *old_curstash = PL_curstash;
line_t oldline = PL_curcop->cop_line;
PL_curcop->cop_line = PL_copline;
PL_hints &= ~HINT_BLOCK_SCOPE;
if (stash)
PL_curstash = PL_curcop->cop_stash = stash;
newSUB(
#if (PERL_VERSION < 3) || ((PERL_VERSION == 3) && (PERL_SUBVERSION < 22))
/* before 5.003_22 */
start_subparse(),
#else
# if (PERL_VERSION == 3) && (PERL_SUBVERSION == 22)
/* 5.003_22 */
start_subparse(0),
# else
/* 5.003_23 onwards */
start_subparse(FALSE, 0),
# endif
#endif
newSVOP(OP_CONST, 0, newSVpv(name,0)),
newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */
newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv))
);
PL_hints = oldhints;
PL_curcop->cop_stash = old_cop_stash;
PL_curstash = old_curstash;
PL_curcop->cop_line = oldline;
}
#endif
#endif /* newCONSTSUB */
#ifndef START_MY_CXT
/*
* Boilerplate macros for initializing and accessing interpreter-local
* data from C. All statics in extensions should be reworked to use
* this, if you want to make the extension thread-safe. See ext/re/re.xs
* for an example of the use of these macros.
*
* Code that uses these macros is responsible for the following:
* 1. #define MY_CXT_KEY to a unique string, e.g. "DynaLoader_guts"
* 2. Declare a typedef named my_cxt_t that is a structure that contains
* all the data that needs to be interpreter-local.
* 3. Use the START_MY_CXT macro after the declaration of my_cxt_t.
* 4. Use the MY_CXT_INIT macro such that it is called exactly once
* (typically put in the BOOT: section).
* 5. Use the members of the my_cxt_t structure everywhere as
* MY_CXT.member.
* 6. Use the dMY_CXT macro (a declaration) in all the functions that
* access MY_CXT.
*/
#if defined(MULTIPLICITY) || defined(PERL_OBJECT) || \
defined(PERL_CAPI) || defined(PERL_IMPLICIT_CONTEXT)
/* This must appear in all extensions that define a my_cxt_t structure,
* right after the definition (i.e. at file scope). The non-threads
* case below uses it to declare the data as static. */
#define START_MY_CXT
#if (PERL_VERSION < 4 || (PERL_VERSION == 4 && PERL_SUBVERSION < 68 ))
/* Fetches the SV that keeps the per-interpreter data. */
#define dMY_CXT_SV \
SV *my_cxt_sv = perl_get_sv(MY_CXT_KEY, FALSE)
#else /* >= perl5.004_68 */
#define dMY_CXT_SV \
SV *my_cxt_sv = *hv_fetch(PL_modglobal, MY_CXT_KEY, \
sizeof(MY_CXT_KEY)-1, TRUE)
#endif /* < perl5.004_68 */
/* This declaration should be used within all functions that use the
* interpreter-local data. */
#define dMY_CXT \
dMY_CXT_SV; \
my_cxt_t *my_cxtp = INT2PTR(my_cxt_t*,SvUV(my_cxt_sv))
/* Creates and zeroes the per-interpreter data.
* (We allocate my_cxtp in a Perl SV so that it will be released when
* the interpreter goes away.) */
#define MY_CXT_INIT \
dMY_CXT_SV; \
/* newSV() allocates one more than needed */ \
my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\
Zero(my_cxtp, 1, my_cxt_t); \
sv_setuv(my_cxt_sv, PTR2UV(my_cxtp))
/* This macro must be used to access members of the my_cxt_t structure.
* e.g. MYCXT.some_data */
#define MY_CXT (*my_cxtp)
/* Judicious use of these macros can reduce the number of times dMY_CXT
* is used. Use is similar to pTHX, aTHX etc. */
#define pMY_CXT my_cxt_t *my_cxtp
#define pMY_CXT_ pMY_CXT,
#define _pMY_CXT ,pMY_CXT
#define aMY_CXT my_cxtp
#define aMY_CXT_ aMY_CXT,
#define _aMY_CXT ,aMY_CXT
#else /* single interpreter */
#define START_MY_CXT static my_cxt_t my_cxt;
#define dMY_CXT_SV dNOOP
#define dMY_CXT dNOOP
#define MY_CXT_INIT NOOP
#define MY_CXT my_cxt
#define pMY_CXT void
#define pMY_CXT_
#define _pMY_CXT
#define aMY_CXT
#define aMY_CXT_
#define _aMY_CXT
#endif
#endif /* START_MY_CXT */
#ifndef IVdf
# if IVSIZE == LONGSIZE
# define IVdf "ld"
# define UVuf "lu"
# define UVof "lo"
# define UVxf "lx"
# define UVXf "lX"
# else
# if IVSIZE == INTSIZE
# define IVdf "d"
# define UVuf "u"
# define UVof "o"
# define UVxf "x"
# define UVXf "X"
# endif
# endif
#endif
#ifndef NVef
# if defined(USE_LONG_DOUBLE) && defined(HAS_LONG_DOUBLE) && \
defined(PERL_PRIfldbl) /* Not very likely, but let's try anyway. */
# define NVef PERL_PRIeldbl
# define NVff PERL_PRIfldbl
# define NVgf PERL_PRIgldbl
# else
# define NVef "e"
# define NVff "f"
# define NVgf "g"
# endif
#endif
#ifndef AvFILLp /* Older perls (<=5.003) lack AvFILLp */
# define AvFILLp AvFILL
#endif
#ifdef SvPVbyte
# if PERL_REVISION == 5 && PERL_VERSION < 7
/* SvPVbyte does not work in perl-5.6.1, borrowed version for 5.7.3 */
# undef SvPVbyte
# define SvPVbyte(sv, lp) \
((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \
? ((lp = SvCUR(sv)), SvPVX(sv)) : my_sv_2pvbyte(aTHX_ sv, &lp))
static char *
my_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
{
sv_utf8_downgrade(sv,0);
return SvPV(sv,*lp);
}
# endif
#else
# define SvPVbyte SvPV
#endif
#ifndef SvPV_nolen
# define SvPV_nolen(sv) \
((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \
? SvPVX(sv) : sv_2pv_nolen(sv))
static char *
sv_2pv_nolen(pTHX_ register SV *sv)
{
STRLEN n_a;
return sv_2pv(sv, &n_a);
}
#endif
#ifndef get_cv
# define get_cv(name,create) perl_get_cv(name,create)
#endif
#ifndef get_sv
# define get_sv(name,create) perl_get_sv(name,create)
#endif
#ifndef get_av
# define get_av(name,create) perl_get_av(name,create)
#endif
#ifndef get_hv
# define get_hv(name,create) perl_get_hv(name,create)
#endif
#ifndef call_argv
# define call_argv perl_call_argv
#endif
#ifndef call_method
# define call_method perl_call_method
#endif
#ifndef call_pv
# define call_pv perl_call_pv
#endif
#ifndef call_sv
# define call_sv perl_call_sv
#endif
#ifndef eval_pv
# define eval_pv perl_eval_pv
#endif
#ifndef eval_sv
# define eval_sv perl_eval_sv
#endif
#ifndef PERL_SCAN_GREATER_THAN_UV_MAX
# define PERL_SCAN_GREATER_THAN_UV_MAX 0x02
#endif
#ifndef PERL_SCAN_SILENT_ILLDIGIT
# define PERL_SCAN_SILENT_ILLDIGIT 0x04
#endif
#ifndef PERL_SCAN_ALLOW_UNDERSCORES
# define PERL_SCAN_ALLOW_UNDERSCORES 0x01
#endif
#ifndef PERL_SCAN_DISALLOW_PREFIX
# define PERL_SCAN_DISALLOW_PREFIX 0x02
#endif
#if (PERL_VERSION > 6) || ((PERL_VERSION == 6) && (PERL_SUBVERSION >= 1))
#define I32_CAST
#else
#define I32_CAST (I32*)
#endif
#ifndef grok_hex
static UV _grok_hex (char *string, STRLEN *len, I32 *flags, NV *result) {
NV r = scan_hex(string, *len, I32_CAST len);
if (r > UV_MAX) {
*flags |= PERL_SCAN_GREATER_THAN_UV_MAX;
if (result) *result = r;
return UV_MAX;
}
return (UV)r;
}
# define grok_hex(string, len, flags, result) \
_grok_hex((string), (len), (flags), (result))
#endif
#ifndef grok_oct
static UV _grok_oct (char *string, STRLEN *len, I32 *flags, NV *result) {
NV r = scan_oct(string, *len, I32_CAST len);
if (r > UV_MAX) {
*flags |= PERL_SCAN_GREATER_THAN_UV_MAX;
if (result) *result = r;
return UV_MAX;
}
return (UV)r;
}
# define grok_oct(string, len, flags, result) \
_grok_oct((string), (len), (flags), (result))
#endif
#if !defined(grok_bin) && defined(scan_bin)
static UV _grok_bin (char *string, STRLEN *len, I32 *flags, NV *result) {
NV r = scan_bin(string, *len, I32_CAST len);
if (r > UV_MAX) {
*flags |= PERL_SCAN_GREATER_THAN_UV_MAX;
if (result) *result = r;
return UV_MAX;
}
return (UV)r;
}
# define grok_bin(string, len, flags, result) \
_grok_bin((string), (len), (flags), (result))
#endif
#ifndef IN_LOCALE
# define IN_LOCALE \
(PL_curcop == &PL_compiling ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)
#endif
#ifndef IN_LOCALE_RUNTIME
# define IN_LOCALE_RUNTIME (PL_curcop->op_private & HINT_LOCALE)
#endif
#ifndef IN_LOCALE_COMPILETIME
# define IN_LOCALE_COMPILETIME (PL_hints & HINT_LOCALE)
#endif
#ifndef IS_NUMBER_IN_UV
# define IS_NUMBER_IN_UV 0x01
# define IS_NUMBER_GREATER_THAN_UV_MAX 0x02
# define IS_NUMBER_NOT_INT 0x04
# define IS_NUMBER_NEG 0x08
# define IS_NUMBER_INFINITY 0x10
# define IS_NUMBER_NAN 0x20
#endif
#ifndef grok_numeric_radix
# define GROK_NUMERIC_RADIX(sp, send) grok_numeric_radix(aTHX_ sp, send)
#define grok_numeric_radix Perl_grok_numeric_radix
bool
Perl_grok_numeric_radix(pTHX_ const char **sp, const char *send)
{
#ifdef USE_LOCALE_NUMERIC
#if (PERL_VERSION > 6) || ((PERL_VERSION == 6) && (PERL_SUBVERSION >= 1))
if (PL_numeric_radix_sv && IN_LOCALE) {
STRLEN len;
char* radix = SvPV(PL_numeric_radix_sv, len);
if (*sp + len <= send && memEQ(*sp, radix, len)) {
*sp += len;
return TRUE;
}
}
#else
/* pre5.6.0 perls don't have PL_numeric_radix_sv so the radix
* must manually be requested from locale.h */
#include <locale.h>
struct lconv *lc = localeconv();
char *radix = lc->decimal_point;
if (radix && IN_LOCALE) {
STRLEN len = strlen(radix);
if (*sp + len <= send && memEQ(*sp, radix, len)) {
*sp += len;
return TRUE;
}
}
#endif /* PERL_VERSION */
#endif /* USE_LOCALE_NUMERIC */
/* always try "." if numeric radix didn't match because
* we may have data from different locales mixed */
if (*sp < send && **sp == '.') {
++*sp;
return TRUE;
}
return FALSE;
}
#endif /* grok_numeric_radix */
#ifndef grok_number
#define grok_number Perl_grok_number
int
Perl_grok_number(pTHX_ const char *pv, STRLEN len, UV *valuep)
{
const char *s = pv;
const char *send = pv + len;
const UV max_div_10 = UV_MAX / 10;
const char max_mod_10 = UV_MAX % 10;
int numtype = 0;
int sawinf = 0;
int sawnan = 0;
while (s < send && isSPACE(*s))
s++;
if (s == send) {
return 0;
} else if (*s == '-') {
s++;
numtype = IS_NUMBER_NEG;
}
else if (*s == '+')
s++;
if (s == send)
return 0;
/* next must be digit or the radix separator or beginning of infinity */
if (isDIGIT(*s)) {
/* UVs are at least 32 bits, so the first 9 decimal digits cannot
overflow. */
UV value = *s - '0';
/* This construction seems to be more optimiser friendly.
(without it gcc does the isDIGIT test and the *s - '0' separately)
With it gcc on arm is managing 6 instructions (6 cycles) per digit.
In theory the optimiser could deduce how far to unroll the loop
before checking for overflow. */
if (++s < send) {
int digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
digit = *s - '0';
if (digit >= 0 && digit <= 9) {
value = value * 10 + digit;
if (++s < send) {
/* Now got 9 digits, so need to check
each time for overflow. */
digit = *s - '0';
while (digit >= 0 && digit <= 9
&& (value < max_div_10
|| (value == max_div_10
&& digit <= max_mod_10))) {
value = value * 10 + digit;
if (++s < send)
digit = *s - '0';
else
break;
}
if (digit >= 0 && digit <= 9
&& (s < send)) {
/* value overflowed.
skip the remaining digits, don't
worry about setting *valuep. */
do {
s++;
} while (s < send && isDIGIT(*s));
numtype |=
IS_NUMBER_GREATER_THAN_UV_MAX;
goto skip_value;
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
numtype |= IS_NUMBER_IN_UV;
if (valuep)
*valuep = value;
skip_value:
if (GROK_NUMERIC_RADIX(&s, send)) {
numtype |= IS_NUMBER_NOT_INT;
while (s < send && isDIGIT(*s)) /* optional digits after the radix */
s++;
}
}
else if (GROK_NUMERIC_RADIX(&s, send)) {
numtype |= IS_NUMBER_NOT_INT | IS_NUMBER_IN_UV; /* valuep assigned below */
/* no digits before the radix means we need digits after it */
if (s < send && isDIGIT(*s)) {
do {
s++;
} while (s < send && isDIGIT(*s));
if (valuep) {
/* integer approximation is valid - it's 0. */
*valuep = 0;
}
}
else
return 0;
} else if (*s == 'I' || *s == 'i') {
s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
s++; if (s == send || (*s != 'F' && *s != 'f')) return 0;
s++; if (s < send && (*s == 'I' || *s == 'i')) {
s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
s++; if (s == send || (*s != 'I' && *s != 'i')) return 0;
s++; if (s == send || (*s != 'T' && *s != 't')) return 0;
s++; if (s == send || (*s != 'Y' && *s != 'y')) return 0;
s++;
}
sawinf = 1;
} else if (*s == 'N' || *s == 'n') {
/* XXX TODO: There are signaling NaNs and quiet NaNs. */
s++; if (s == send || (*s != 'A' && *s != 'a')) return 0;
s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
s++;
sawnan = 1;
} else
return 0;
if (sawinf) {
numtype &= IS_NUMBER_NEG; /* Keep track of sign */
numtype |= IS_NUMBER_INFINITY | IS_NUMBER_NOT_INT;
} else if (sawnan) {
numtype &= IS_NUMBER_NEG; /* Keep track of sign */
numtype |= IS_NUMBER_NAN | IS_NUMBER_NOT_INT;
} else if (s < send) {
/* we can have an optional exponent part */
if (*s == 'e' || *s == 'E') {
/* The only flag we keep is sign. Blow away any "it's UV" */
numtype &= IS_NUMBER_NEG;
numtype |= IS_NUMBER_NOT_INT;
s++;
if (s < send && (*s == '-' || *s == '+'))
s++;
if (s < send && isDIGIT(*s)) {
do {
s++;
} while (s < send && isDIGIT(*s));
}
else
return 0;
}
}
while (s < send && isSPACE(*s))
s++;
if (s >= send)
return numtype;
if (len == 10 && memEQ(pv, "0 but true", 10)) {
if (valuep)
*valuep = 0;
return IS_NUMBER_IN_UV;
}
return 0;
}
#endif /* grok_number */
#ifndef PERL_MAGIC_sv
# define PERL_MAGIC_sv '\0'
#endif
#ifndef PERL_MAGIC_overload
# define PERL_MAGIC_overload 'A'
#endif
#ifndef PERL_MAGIC_overload_elem
# define PERL_MAGIC_overload_elem 'a'
#endif
#ifndef PERL_MAGIC_overload_table
# define PERL_MAGIC_overload_table 'c'
#endif
#ifndef PERL_MAGIC_bm
# define PERL_MAGIC_bm 'B'
#endif
#ifndef PERL_MAGIC_regdata
# define PERL_MAGIC_regdata 'D'
#endif
#ifndef PERL_MAGIC_regdatum
# define PERL_MAGIC_regdatum 'd'
#endif
#ifndef PERL_MAGIC_env
# define PERL_MAGIC_env 'E'
#endif
#ifndef PERL_MAGIC_envelem
# define PERL_MAGIC_envelem 'e'
#endif
#ifndef PERL_MAGIC_fm
# define PERL_MAGIC_fm 'f'
#endif
#ifndef PERL_MAGIC_regex_global
# define PERL_MAGIC_regex_global 'g'
#endif
#ifndef PERL_MAGIC_isa
# define PERL_MAGIC_isa 'I'
#endif
#ifndef PERL_MAGIC_isaelem
# define PERL_MAGIC_isaelem 'i'
#endif
#ifndef PERL_MAGIC_nkeys
# define PERL_MAGIC_nkeys 'k'
#endif
#ifndef PERL_MAGIC_dbfile
# define PERL_MAGIC_dbfile 'L'
#endif
#ifndef PERL_MAGIC_dbline
# define PERL_MAGIC_dbline 'l'
#endif
#ifndef PERL_MAGIC_mutex
# define PERL_MAGIC_mutex 'm'
#endif
#ifndef PERL_MAGIC_shared
# define PERL_MAGIC_shared 'N'
#endif
#ifndef PERL_MAGIC_shared_scalar
# define PERL_MAGIC_shared_scalar 'n'
#endif
#ifndef PERL_MAGIC_collxfrm
# define PERL_MAGIC_collxfrm 'o'
#endif
#ifndef PERL_MAGIC_tied
# define PERL_MAGIC_tied 'P'
#endif
#ifndef PERL_MAGIC_tiedelem
# define PERL_MAGIC_tiedelem 'p'
#endif
#ifndef PERL_MAGIC_tiedscalar
# define PERL_MAGIC_tiedscalar 'q'
#endif
#ifndef PERL_MAGIC_qr
# define PERL_MAGIC_qr 'r'
#endif
#ifndef PERL_MAGIC_sig
# define PERL_MAGIC_sig 'S'
#endif
#ifndef PERL_MAGIC_sigelem
# define PERL_MAGIC_sigelem 's'
#endif
#ifndef PERL_MAGIC_taint
# define PERL_MAGIC_taint 't'
#endif
#ifndef PERL_MAGIC_uvar
# define PERL_MAGIC_uvar 'U'
#endif
#ifndef PERL_MAGIC_uvar_elem
# define PERL_MAGIC_uvar_elem 'u'
#endif
#ifndef PERL_MAGIC_vstring
# define PERL_MAGIC_vstring 'V'
#endif
#ifndef PERL_MAGIC_vec
# define PERL_MAGIC_vec 'v'
#endif
#ifndef PERL_MAGIC_utf8
# define PERL_MAGIC_utf8 'w'
#endif
#ifndef PERL_MAGIC_substr
# define PERL_MAGIC_substr 'x'
#endif
#ifndef PERL_MAGIC_defelem
# define PERL_MAGIC_defelem 'y'
#endif
#ifndef PERL_MAGIC_glob
# define PERL_MAGIC_glob '*'
#endif
#ifndef PERL_MAGIC_arylen
# define PERL_MAGIC_arylen '#'
#endif
#ifndef PERL_MAGIC_pos
# define PERL_MAGIC_pos '.'
#endif
#ifndef PERL_MAGIC_backref
# define PERL_MAGIC_backref '<'
#endif
#ifndef PERL_MAGIC_ext
# define PERL_MAGIC_ext '~'
#endif
#endif /* _P_P_PORTABILITY_H_ */
/* End of File ppport.h */