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-rw-r--r--Master/tlpkg/tlperl/lib/B/Bytecode.pm889
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diff --git a/Master/tlpkg/tlperl/lib/B/Bytecode.pm b/Master/tlpkg/tlperl/lib/B/Bytecode.pm
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-# B::Bytecode.pm
-# Copyright (c) 2003 Enache Adrian. All rights reserved.
-# This module is free software; you can redistribute and/or modify
-# it under the same terms as Perl itself.
-
-# Based on the original Bytecode.pm module written by Malcolm Beattie.
-
-package B::Bytecode;
-
-our $VERSION = '1.01_01';
-
-use strict;
-use Config;
-use B qw(class main_cv main_root main_start cstring comppadlist
- defstash curstash begin_av init_av end_av inc_gv warnhook diehook
- dowarn SVt_PVGV SVt_PVHV OPf_SPECIAL OPf_STACKED OPf_MOD
- OPpLVAL_INTRO SVf_FAKE SVf_READONLY);
-use B::Asmdata qw(@specialsv_name);
-use B::Assembler qw(asm newasm endasm);
-
-#################################################
-
-my ($varix, $opix, $savebegins, %walked, %files, @cloop);
-my %strtab = (0,0);
-my %svtab = (0,0);
-my %optab = (0,0);
-my %spectab = (0,0);
-my $tix = 1;
-sub asm;
-sub nice ($) { }
-
-BEGIN {
- my $ithreads = $Config{'useithreads'} eq 'define';
- eval qq{
- sub ITHREADS() { $ithreads }
- sub VERSION() { $] }
- }; die $@ if $@;
-}
-
-#################################################
-
-sub pvstring {
- my $pv = shift;
- defined($pv) ? cstring ($pv."\0") : "\"\"";
-}
-
-sub pvix {
- my $str = pvstring shift;
- my $ix = $strtab{$str};
- defined($ix) ? $ix : do {
- asm "newpv", $str;
- asm "stpv", $strtab{$str} = $tix;
- $tix++;
- }
-}
-
-sub B::OP::ix {
- my $op = shift;
- my $ix = $optab{$$op};
- defined($ix) ? $ix : do {
- nice "[".$op->name." $tix]";
- asm "newopx", $op->size | $op->type <<7;
- $optab{$$op} = $opix = $ix = $tix++;
- $op->bsave($ix);
- $ix;
- }
-}
-
-sub B::SPECIAL::ix {
- my $spec = shift;
- my $ix = $spectab{$$spec};
- defined($ix) ? $ix : do {
- nice '['.$specialsv_name[$$spec].']';
- asm "ldspecsvx", $$spec;
- $spectab{$$spec} = $varix = $tix++;
- }
-}
-
-sub B::SV::ix {
- my $sv = shift;
- my $ix = $svtab{$$sv};
- defined($ix) ? $ix : do {
- nice '['.class($sv).']';
- asm "newsvx", $sv->FLAGS;
- $svtab{$$sv} = $varix = $ix = $tix++;
- $sv->bsave($ix);
- $ix;
- }
-}
-
-sub B::GV::ix {
- my ($gv,$desired) = @_;
- my $ix = $svtab{$$gv};
- defined($ix) ? $ix : do {
- if ($gv->GP) {
- my ($svix, $avix, $hvix, $cvix, $ioix, $formix);
- nice "[GV]";
- my $name = $gv->STASH->NAME . "::" . $gv->NAME;
- asm "gv_fetchpvx", cstring $name;
- $svtab{$$gv} = $varix = $ix = $tix++;
- asm "sv_flags", $gv->FLAGS;
- asm "sv_refcnt", $gv->REFCNT;
- asm "xgv_flags", $gv->GvFLAGS;
-
- asm "gp_refcnt", $gv->GvREFCNT;
- asm "load_glob", $ix if $name eq "CORE::GLOBAL::glob";
- return $ix
- unless $desired || desired $gv;
- $svix = $gv->SV->ix;
- $avix = $gv->AV->ix;
- $hvix = $gv->HV->ix;
-
- # XXX {{{{
- my $cv = $gv->CV;
- $cvix = $$cv && defined $files{$cv->FILE} ? $cv->ix : 0;
- my $form = $gv->FORM;
- $formix = $$form && defined $files{$form->FILE} ? $form->ix : 0;
-
- $ioix = $name !~ /STDOUT$/ ? $gv->IO->ix : 0;
- # }}}} XXX
-
- nice "-GV-",
- asm "ldsv", $varix = $ix unless $ix == $varix;
- asm "gp_sv", $svix;
- asm "gp_av", $avix;
- asm "gp_hv", $hvix;
- asm "gp_cv", $cvix;
- asm "gp_io", $ioix;
- asm "gp_cvgen", $gv->CVGEN;
- asm "gp_form", $formix;
- asm "gp_file", pvix $gv->FILE;
- asm "gp_line", $gv->LINE;
- asm "formfeed", $svix if $name eq "main::\cL";
- } else {
- nice "[GV]";
- asm "newsvx", $gv->FLAGS;
- $svtab{$$gv} = $varix = $ix = $tix++;
- my $stashix = $gv->STASH->ix;
- $gv->B::PVMG::bsave($ix);
- asm "xgv_flags", $gv->GvFLAGS;
- asm "xgv_stash", $stashix;
- }
- $ix;
- }
-}
-
-sub B::HV::ix {
- my $hv = shift;
- my $ix = $svtab{$$hv};
- defined($ix) ? $ix : do {
- my ($ix,$i,@array);
- my $name = $hv->NAME;
- if ($name) {
- nice "[STASH]";
- asm "gv_stashpvx", cstring $name;
- asm "sv_flags", $hv->FLAGS;
- $svtab{$$hv} = $varix = $ix = $tix++;
- asm "xhv_name", pvix $name;
- # my $pmrootix = $hv->PMROOT->ix; # XXX
- asm "ldsv", $varix = $ix unless $ix == $varix;
- # asm "xhv_pmroot", $pmrootix; # XXX
- } else {
- nice "[HV]";
- asm "newsvx", $hv->FLAGS;
- $svtab{$$hv} = $varix = $ix = $tix++;
- my $stashix = $hv->SvSTASH->ix;
- for (@array = $hv->ARRAY) {
- next if $i = not $i;
- $_ = $_->ix;
- }
- nice "-HV-",
- asm "ldsv", $varix = $ix unless $ix == $varix;
- ($i = not $i) ? asm ("newpv", pvstring $_) : asm("hv_store", $_)
- for @array;
- if (VERSION < 5.009) {
- asm "xnv", $hv->NVX;
- }
- asm "xmg_stash", $stashix;
- asm "xhv_riter", $hv->RITER;
- }
- asm "sv_refcnt", $hv->REFCNT;
- $ix;
- }
-}
-
-sub B::NULL::ix {
- my $sv = shift;
- $$sv ? $sv->B::SV::ix : 0;
-}
-
-sub B::NULL::opwalk { 0 }
-
-#################################################
-
-sub B::NULL::bsave {
- my ($sv,$ix) = @_;
-
- nice '-'.class($sv).'-',
- asm "ldsv", $varix = $ix unless $ix == $varix;
- asm "sv_refcnt", $sv->REFCNT;
-}
-
-sub B::SV::bsave;
- *B::SV::bsave = *B::NULL::bsave;
-
-sub B::RV::bsave {
- my ($sv,$ix) = @_;
- my $rvix = $sv->RV->ix;
- $sv->B::NULL::bsave($ix);
- asm "xrv", $rvix;
-}
-
-sub B::PV::bsave {
- my ($sv,$ix) = @_;
- $sv->B::NULL::bsave($ix);
- asm "newpv", pvstring $sv->PVBM;
- asm "xpv";
-}
-
-sub B::IV::bsave {
- my ($sv,$ix) = @_;
- $sv->B::NULL::bsave($ix);
- asm "xiv", $sv->IVX;
-}
-
-sub B::NV::bsave {
- my ($sv,$ix) = @_;
- $sv->B::NULL::bsave($ix);
- asm "xnv", sprintf "%.40g", $sv->NVX;
-}
-
-sub B::PVIV::bsave {
- my ($sv,$ix) = @_;
- $sv->POK ?
- $sv->B::PV::bsave($ix):
- $sv->ROK ?
- $sv->B::RV::bsave($ix):
- $sv->B::NULL::bsave($ix);
- if (VERSION >= 5.009) {
- # See note below in B::PVNV::bsave
- return if $sv->isa('B::AV');
- return if $sv->isa('B::HV');
- }
- asm "xiv", !ITHREADS && $sv->FLAGS & (SVf_FAKE|SVf_READONLY) ?
- "0 but true" : $sv->IVX;
-}
-
-sub B::PVNV::bsave {
- my ($sv,$ix) = @_;
- $sv->B::PVIV::bsave($ix);
- if (VERSION >= 5.009) {
- # Magical AVs end up here, but AVs now don't have an NV slot actually
- # allocated. Hence don't write out assembly to store the NV slot if
- # we're actually an array.
- return if $sv->isa('B::AV');
- # Likewise HVs have no NV slot actually allocated.
- # I don't think that they can get here, but better safe than sorry
- return if $sv->isa('B::HV');
- }
- asm "xnv", sprintf "%.40g", $sv->NVX;
-}
-
-sub B::PVMG::domagic {
- my ($sv,$ix) = @_;
- nice '-MAGICAL-';
- my @mglist = $sv->MAGIC;
- my (@mgix, @namix);
- for (@mglist) {
- push @mgix, $_->OBJ->ix;
- push @namix, $_->PTR->ix if $_->LENGTH == B::HEf_SVKEY;
- }
-
- nice '-'.class($sv).'-',
- asm "ldsv", $varix = $ix unless $ix == $varix;
- for (@mglist) {
- asm "sv_magic", cstring $_->TYPE;
- asm "mg_obj", shift @mgix;
- my $length = $_->LENGTH;
- if ($length == B::HEf_SVKEY) {
- asm "mg_namex", shift @namix;
- } elsif ($length) {
- asm "newpv", pvstring $_->PTR;
- asm "mg_name";
- }
- }
-}
-
-sub B::PVMG::bsave {
- my ($sv,$ix) = @_;
- my $stashix = $sv->SvSTASH->ix;
- $sv->B::PVNV::bsave($ix);
- asm "xmg_stash", $stashix;
- $sv->domagic($ix) if $sv->MAGICAL;
-}
-
-sub B::PVLV::bsave {
- my ($sv,$ix) = @_;
- my $targix = $sv->TARG->ix;
- $sv->B::PVMG::bsave($ix);
- asm "xlv_targ", $targix;
- asm "xlv_targoff", $sv->TARGOFF;
- asm "xlv_targlen", $sv->TARGLEN;
- asm "xlv_type", $sv->TYPE;
-
-}
-
-sub B::BM::bsave {
- my ($sv,$ix) = @_;
- $sv->B::PVMG::bsave($ix);
- asm "xpv_cur", $sv->CUR;
- asm "xbm_useful", $sv->USEFUL;
- asm "xbm_previous", $sv->PREVIOUS;
- asm "xbm_rare", $sv->RARE;
-}
-
-sub B::IO::bsave {
- my ($io,$ix) = @_;
- my $topix = $io->TOP_GV->ix;
- my $fmtix = $io->FMT_GV->ix;
- my $bottomix = $io->BOTTOM_GV->ix;
- $io->B::PVMG::bsave($ix);
- asm "xio_lines", $io->LINES;
- asm "xio_page", $io->PAGE;
- asm "xio_page_len", $io->PAGE_LEN;
- asm "xio_lines_left", $io->LINES_LEFT;
- asm "xio_top_name", pvix $io->TOP_NAME;
- asm "xio_top_gv", $topix;
- asm "xio_fmt_name", pvix $io->FMT_NAME;
- asm "xio_fmt_gv", $fmtix;
- asm "xio_bottom_name", pvix $io->BOTTOM_NAME;
- asm "xio_bottom_gv", $bottomix;
- asm "xio_subprocess", $io->SUBPROCESS;
- asm "xio_type", ord $io->IoTYPE;
- # asm "xio_flags", ord($io->IoFLAGS) & ~32; # XXX XXX
-}
-
-sub B::CV::bsave {
- my ($cv,$ix) = @_;
- my $stashix = $cv->STASH->ix;
- my $gvix = $cv->GV->ix;
- my $padlistix = $cv->PADLIST->ix;
- my $outsideix = $cv->OUTSIDE->ix;
- my $constix = $cv->CONST ? $cv->XSUBANY->ix : 0;
- my $startix = $cv->START->opwalk;
- my $rootix = $cv->ROOT->ix;
-
- $cv->B::PVMG::bsave($ix);
- asm "xcv_stash", $stashix;
- asm "xcv_start", $startix;
- asm "xcv_root", $rootix;
- asm "xcv_xsubany", $constix;
- asm "xcv_gv", $gvix;
- asm "xcv_file", pvix $cv->FILE if $cv->FILE; # XXX AD
- asm "xcv_padlist", $padlistix;
- asm "xcv_outside", $outsideix;
- asm "xcv_flags", $cv->CvFLAGS;
- asm "xcv_outside_seq", $cv->OUTSIDE_SEQ;
- asm "xcv_depth", $cv->DEPTH;
-}
-
-sub B::FM::bsave {
- my ($form,$ix) = @_;
-
- $form->B::CV::bsave($ix);
- asm "xfm_lines", $form->LINES;
-}
-
-sub B::AV::bsave {
- my ($av,$ix) = @_;
- return $av->B::PVMG::bsave($ix) if $av->MAGICAL;
- my @array = $av->ARRAY;
- $_ = $_->ix for @array;
- my $stashix = $av->SvSTASH->ix;
-
- nice "-AV-",
- asm "ldsv", $varix = $ix unless $ix == $varix;
- asm "av_extend", $av->MAX if $av->MAX >= 0;
- asm "av_pushx", $_ for @array;
- asm "sv_refcnt", $av->REFCNT;
- if (VERSION < 5.009) {
- asm "xav_flags", $av->AvFLAGS;
- }
- asm "xmg_stash", $stashix;
-}
-
-sub B::GV::desired {
- my $gv = shift;
- my ($cv, $form);
- $files{$gv->FILE} && $gv->LINE
- || ${$cv = $gv->CV} && $files{$cv->FILE}
- || ${$form = $gv->FORM} && $files{$form->FILE}
-}
-
-sub B::HV::bwalk {
- my $hv = shift;
- return if $walked{$$hv}++;
- my %stash = $hv->ARRAY;
- while (my($k,$v) = each %stash) {
- if ($v->SvTYPE == SVt_PVGV) {
- my $hash = $v->HV;
- if ($$hash && $hash->NAME) {
- $hash->bwalk;
- }
- $v->ix(1) if desired $v;
- } else {
- nice "[prototype]";
- asm "gv_fetchpvx", cstring $hv->NAME . "::$k";
- $svtab{$$v} = $varix = $tix;
- $v->bsave($tix++);
- asm "sv_flags", $v->FLAGS;
- }
- }
-}
-
-######################################################
-
-
-sub B::OP::bsave_thin {
- my ($op, $ix) = @_;
- my $next = $op->next;
- my $nextix = $optab{$$next};
- $nextix = 0, push @cloop, $op unless defined $nextix;
- if ($ix != $opix) {
- nice '-'.$op->name.'-',
- asm "ldop", $opix = $ix;
- }
- asm "op_next", $nextix;
- asm "op_targ", $op->targ if $op->type; # tricky
- asm "op_flags", $op->flags;
- asm "op_private", $op->private;
-}
-
-sub B::OP::bsave;
- *B::OP::bsave = *B::OP::bsave_thin;
-
-sub B::UNOP::bsave {
- my ($op, $ix) = @_;
- my $name = $op->name;
- my $flags = $op->flags;
- my $first = $op->first;
- my $firstix =
- $name =~ /fl[io]p/
- # that's just neat
- || (!ITHREADS && $name eq 'regcomp')
- # trick for /$a/o in pp_regcomp
- || $name eq 'rv2sv'
- && $op->flags & OPf_MOD
- && $op->private & OPpLVAL_INTRO
- # change #18774 made my life hard
- ? $first->ix
- : 0;
-
- $op->B::OP::bsave($ix);
- asm "op_first", $firstix;
-}
-
-sub B::BINOP::bsave {
- my ($op, $ix) = @_;
- if ($op->name eq 'aassign' && $op->private & B::OPpASSIGN_HASH()) {
- my $last = $op->last;
- my $lastix = do {
- local *B::OP::bsave = *B::OP::bsave_fat;
- local *B::UNOP::bsave = *B::UNOP::bsave_fat;
- $last->ix;
- };
- asm "ldop", $lastix unless $lastix == $opix;
- asm "op_targ", $last->targ;
- $op->B::OP::bsave($ix);
- asm "op_last", $lastix;
- } else {
- $op->B::OP::bsave($ix);
- }
-}
-
-# not needed if no pseudohashes
-
-*B::BINOP::bsave = *B::OP::bsave if VERSION >= 5.009;
-
-# deal with sort / formline
-
-sub B::LISTOP::bsave {
- my ($op, $ix) = @_;
- my $name = $op->name;
- sub blocksort() { OPf_SPECIAL|OPf_STACKED }
- if ($name eq 'sort' && ($op->flags & blocksort) == blocksort) {
- my $first = $op->first;
- my $pushmark = $first->sibling;
- my $rvgv = $pushmark->first;
- my $leave = $rvgv->first;
-
- my $leaveix = $leave->ix;
-
- my $rvgvix = $rvgv->ix;
- asm "ldop", $rvgvix unless $rvgvix == $opix;
- asm "op_first", $leaveix;
-
- my $pushmarkix = $pushmark->ix;
- asm "ldop", $pushmarkix unless $pushmarkix == $opix;
- asm "op_first", $rvgvix;
-
- my $firstix = $first->ix;
- asm "ldop", $firstix unless $firstix == $opix;
- asm "op_sibling", $pushmarkix;
-
- $op->B::OP::bsave($ix);
- asm "op_first", $firstix;
- } elsif ($name eq 'formline') {
- $op->B::UNOP::bsave_fat($ix);
- } else {
- $op->B::OP::bsave($ix);
- }
-}
-
-# fat versions
-
-sub B::OP::bsave_fat {
- my ($op, $ix) = @_;
- my $siblix = $op->sibling->ix;
-
- $op->B::OP::bsave_thin($ix);
- asm "op_sibling", $siblix;
- # asm "op_seq", -1; XXX don't allocate OPs piece by piece
-}
-
-sub B::UNOP::bsave_fat {
- my ($op,$ix) = @_;
- my $firstix = $op->first->ix;
-
- $op->B::OP::bsave($ix);
- asm "op_first", $firstix;
-}
-
-sub B::BINOP::bsave_fat {
- my ($op,$ix) = @_;
- my $last = $op->last;
- my $lastix = $op->last->ix;
- if (VERSION < 5.009 && $op->name eq 'aassign' && $last->name eq 'null') {
- asm "ldop", $lastix unless $lastix == $opix;
- asm "op_targ", $last->targ;
- }
-
- $op->B::UNOP::bsave($ix);
- asm "op_last", $lastix;
-}
-
-sub B::LOGOP::bsave {
- my ($op,$ix) = @_;
- my $otherix = $op->other->ix;
-
- $op->B::UNOP::bsave($ix);
- asm "op_other", $otherix;
-}
-
-sub B::PMOP::bsave {
- my ($op,$ix) = @_;
- my ($rrop, $rrarg, $rstart);
-
- # my $pmnextix = $op->pmnext->ix; # XXX
-
- if (ITHREADS) {
- if ($op->name eq 'subst') {
- $rrop = "op_pmreplroot";
- $rrarg = $op->pmreplroot->ix;
- $rstart = $op->pmreplstart->ix;
- } elsif ($op->name eq 'pushre') {
- $rrop = "op_pmreplrootpo";
- $rrarg = $op->pmreplroot;
- }
- $op->B::BINOP::bsave($ix);
- asm "op_pmstashpv", pvix $op->pmstashpv;
- } else {
- $rrop = "op_pmreplrootgv";
- $rrarg = $op->pmreplroot->ix;
- $rstart = $op->pmreplstart->ix if $op->name eq 'subst';
- my $stashix = $op->pmstash->ix;
- $op->B::BINOP::bsave($ix);
- asm "op_pmstash", $stashix;
- }
-
- asm $rrop, $rrarg if $rrop;
- asm "op_pmreplstart", $rstart if $rstart;
-
- asm "op_pmflags", $op->pmflags;
- asm "op_pmpermflags", $op->pmpermflags;
- asm "op_pmdynflags", $op->pmdynflags;
- # asm "op_pmnext", $pmnextix; # XXX
- asm "newpv", pvstring $op->precomp;
- asm "pregcomp";
-}
-
-sub B::SVOP::bsave {
- my ($op,$ix) = @_;
- my $svix = $op->sv->ix;
-
- $op->B::OP::bsave($ix);
- asm "op_sv", $svix;
-}
-
-sub B::PADOP::bsave {
- my ($op,$ix) = @_;
-
- $op->B::OP::bsave($ix);
- asm "op_padix", $op->padix;
-}
-
-sub B::PVOP::bsave {
- my ($op,$ix) = @_;
- $op->B::OP::bsave($ix);
- return unless my $pv = $op->pv;
-
- if ($op->name eq 'trans') {
- asm "op_pv_tr", join ',', length($pv)/2, unpack("s*", $pv);
- } else {
- asm "newpv", pvstring $pv;
- asm "op_pv";
- }
-}
-
-sub B::LOOP::bsave {
- my ($op,$ix) = @_;
- my $nextix = $op->nextop->ix;
- my $lastix = $op->lastop->ix;
- my $redoix = $op->redoop->ix;
-
- $op->B::BINOP::bsave($ix);
- asm "op_redoop", $redoix;
- asm "op_nextop", $nextix;
- asm "op_lastop", $lastix;
-}
-
-sub B::COP::bsave {
- my ($cop,$ix) = @_;
- my $warnix = $cop->warnings->ix;
- my $ioix = $cop->io->ix;
- if (ITHREADS) {
- $cop->B::OP::bsave($ix);
- asm "cop_stashpv", pvix $cop->stashpv;
- asm "cop_file", pvix $cop->file;
- } else {
- my $stashix = $cop->stash->ix;
- my $fileix = $cop->filegv->ix(1);
- $cop->B::OP::bsave($ix);
- asm "cop_stash", $stashix;
- asm "cop_filegv", $fileix;
- }
- asm "cop_label", pvix $cop->label if $cop->label; # XXX AD
- asm "cop_seq", $cop->cop_seq;
- asm "cop_arybase", $cop->arybase;
- asm "cop_line", $cop->line;
- asm "cop_warnings", $warnix;
- asm "cop_io", $ioix;
-}
-
-sub B::OP::opwalk {
- my $op = shift;
- my $ix = $optab{$$op};
- defined($ix) ? $ix : do {
- my $ix;
- my @oplist = $op->oplist;
- push @cloop, undef;
- $ix = $_->ix while $_ = pop @oplist;
- while ($_ = pop @cloop) {
- asm "ldop", $optab{$$_};
- asm "op_next", $optab{${$_->next}};
- }
- $ix;
- }
-}
-
-#################################################
-
-sub save_cq {
- my $av;
- if (($av=begin_av)->isa("B::AV")) {
- if ($savebegins) {
- for ($av->ARRAY) {
- next unless $_->FILE eq $0;
- asm "push_begin", $_->ix;
- }
- } else {
- for ($av->ARRAY) {
- next unless $_->FILE eq $0;
- # XXX BEGIN { goto A while 1; A: }
- for (my $op = $_->START; $$op; $op = $op->next) {
- next unless $op->name eq 'require' ||
- # this kludge needed for tests
- $op->name eq 'gv' && do {
- my $gv = class($op) eq 'SVOP' ?
- $op->gv :
- (($_->PADLIST->ARRAY)[1]->ARRAY)[$op->padix];
- $$gv && $gv->NAME =~ /use_ok|plan/
- };
- asm "push_begin", $_->ix;
- last;
- }
- }
- }
- }
- if (($av=init_av)->isa("B::AV")) {
- for ($av->ARRAY) {
- next unless $_->FILE eq $0;
- asm "push_init", $_->ix;
- }
- }
- if (($av=end_av)->isa("B::AV")) {
- for ($av->ARRAY) {
- next unless $_->FILE eq $0;
- asm "push_end", $_->ix;
- }
- }
-}
-
-sub compile {
- my ($head, $scan, $T_inhinc, $keep_syn);
- my $cwd = '';
- $files{$0} = 1;
- sub keep_syn {
- $keep_syn = 1;
- *B::OP::bsave = *B::OP::bsave_fat;
- *B::UNOP::bsave = *B::UNOP::bsave_fat;
- *B::BINOP::bsave = *B::BINOP::bsave_fat;
- *B::LISTOP::bsave = *B::LISTOP::bsave_fat;
- }
- sub bwarn { print STDERR "Bytecode.pm: @_\n" }
-
- for (@_) {
- if (/^-S/) {
- *newasm = *endasm = sub { };
- *asm = sub { print " @_\n" };
- *nice = sub ($) { print "\n@_\n" };
- } elsif (/^-H/) {
- require ByteLoader;
- $head = "#! $^X\nuse ByteLoader $ByteLoader::VERSION;\n";
- } elsif (/^-k/) {
- keep_syn;
- } elsif (/^-o(.*)$/) {
- open STDOUT, ">$1" or die "open $1: $!";
- } elsif (/^-f(.*)$/) {
- $files{$1} = 1;
- } elsif (/^-s(.*)$/) {
- $scan = length($1) ? $1 : $0;
- } elsif (/^-b/) {
- $savebegins = 1;
- # this is here for the testsuite
- } elsif (/^-TI/) {
- $T_inhinc = 1;
- } elsif (/^-TF(.*)/) {
- my $thatfile = $1;
- *B::COP::file = sub { $thatfile };
- } else {
- bwarn "Ignoring '$_' option";
- }
- }
- if ($scan) {
- my $f;
- if (open $f, $scan) {
- while (<$f>) {
- /^#\s*line\s+\d+\s+("?)(.*)\1/ and $files{$2} = 1;
- /^#/ and next;
- if (/\bgoto\b\s*[^&]/ && !$keep_syn) {
- bwarn "keeping the syntax tree: \"goto\" op found";
- keep_syn;
- }
- }
- } else {
- bwarn "cannot rescan '$scan'";
- }
- close $f;
- }
- binmode STDOUT;
- return sub {
- print $head if $head;
- newasm sub { print @_ };
-
- defstash->bwalk;
- asm "main_start", main_start->opwalk;
- asm "main_root", main_root->ix;
- asm "main_cv", main_cv->ix;
- asm "curpad", (comppadlist->ARRAY)[1]->ix;
-
- asm "signal", cstring "__WARN__" # XXX
- if warnhook->ix;
- asm "incav", inc_gv->AV->ix if $T_inhinc;
- save_cq;
- asm "incav", inc_gv->AV->ix if $T_inhinc;
- asm "dowarn", dowarn;
-
- {
- no strict 'refs';
- nice "<DATA>";
- my $dh = *{defstash->NAME."::DATA"};
- unless (eof $dh) {
- local undef $/;
- asm "data", ord 'D';
- print <$dh>;
- } else {
- asm "ret";
- }
- }
-
- endasm;
- }
-}
-
-1;
-
-=head1 NAME
-
-B::Bytecode - Perl compiler's bytecode backend
-
-=head1 SYNOPSIS
-
-B<perl -MO=Bytecode>[B<,-H>][B<,-o>I<script.plc>] I<script.pl>
-
-=head1 DESCRIPTION
-
-Compiles a Perl script into a bytecode format that could be loaded
-later by the ByteLoader module and executed as a regular Perl script.
-
-=head1 EXAMPLE
-
- $ perl -MO=Bytecode,-H,-ohi -e 'print "hi!\n"'
- $ perl hi
- hi!
-
-=head1 OPTIONS
-
-=over 4
-
-=item B<-b>
-
-Save all the BEGIN blocks. Normally only BEGIN blocks that C<require>
-other files (ex. C<use Foo;>) are saved.
-
-=item B<-H>
-
-prepend a C<use ByteLoader VERSION;> line to the produced bytecode.
-
-=item B<-k>
-
-keep the syntax tree - it is stripped by default.
-
-=item B<-o>I<outfile>
-
-put the bytecode in <outfile> instead of dumping it to STDOUT.
-
-=item B<-s>
-
-scan the script for C<# line ..> directives and for <goto LABEL>
-expressions. When gotos are found keep the syntax tree.
-
-=back
-
-=head1 KNOWN BUGS
-
-=over 4
-
-=item *
-
-C<BEGIN { goto A: while 1; A: }> won't even compile.
-
-=item *
-
-C<?...?> and C<reset> do not work as expected.
-
-=item *
-
-variables in C<(?{ ... })> constructs are not properly scoped.
-
-=item *
-
-scripts that use source filters will fail miserably.
-
-=back
-
-=head1 NOTICE
-
-There are also undocumented bugs and options.
-
-THIS CODE IS HIGHLY EXPERIMENTAL. USE AT YOUR OWN RISK.
-
-=head1 AUTHORS
-
-Originally written by Malcolm Beattie <mbeattie@sable.ox.ac.uk> and
-modified by Benjamin Stuhl <sho_pi@hotmail.com>.
-
-Rewritten by Enache Adrian <enache@rdslink.ro>, 2003 a.d.
-
-=cut