PERLCOMPILE 7

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PERLCOMPILE

NAME
DESCRIPTION æè¿°
Using The Back Ends ä½¿ç¨åç«¯
Module List for the Compiler Suite ç¼è¯å¥ä»¶çæ¨¡ååè¡¨
KNOWN PROBLEMS å·²ç¥çé®é¢
AUTHOR ä½è
è¯è

NAME

perlcompile - å³äº Perl ç¼è¯å¨åç¿»è¯å¨çä»ç»

DESCRIPTION æè¿°

Layout å¸å±

B::C

B::CC

B::Lint

B::Deparse

B::Xref

Using The Back Ends ä½¿ç¨åç«¯

myperlprogram syntax OK

The Cross Referencing Back End äº¤åå¼ç¨åç«¯

Subroutine clear_noremap
Package (lexical)
$ready_to_print i1069, 1079
Package main
$& 1086
$. 1086
$0 1086
$1 1087
$2 1085, 1085
$3 1085, 1085
$ARGV 1086
%HTML_Escapes 1085, 1085

è¿éå±ç¤ºäº"clear_noremap" åç¨åºä¸åéçä½¿ç¨æåµãå°±ååé $ready_to_print æ¯ my() (è¯æ³) çä¸ä¸ªåéï¼å¨ç¬¬1069è¡è¢«å¼å¥( åæç¨çè¯æ¯introducedï¼ä¹å°±æ¯å¨ my() ä¸ç¬¬ä¸æ¬¡è¢«å®ä¹çææ )ï¼ç¶åå¨ç¬¬1079è¡è¯¥åéè¢«ä½¿ç¨äºãä»ä¸»åï¼main packageï¼ä¸æ¥çåé $& åå¨ç¬¬1086è¡è¢«ä½¿ç¨, ççã

è¡å·åé¢å¯è½ä¼æä¸ä¸ªåæ¯ä½ä¸ºåç¼ï¼å®ä»¬çæææ¯ï¼

	i		åéé¦æ¬¡è¢«å¼å¥ (å¨my()ä¸ç³æ) ã
	&		åç¨åºæèæ¹æ³çå¼ç¨ã
	s		å®ä¹çåç¨åºã
	r		å®ä¹çæ ¼å¼ã

$ perl -MO=Xref,-oreport myperlprogram

The Decompiling Back End åç¼è¯åç«¯

$ perl -MO=Deparse myperlprogram

$ perl -MO=Deparse -e ’$op=shift⎪⎪die "usage: $0
code [...]";chomp(@ARGV=<>)unless@ARGV; for(@ARGV){$was=$_;eval$op;
die$@ if$@; rename$was,$_ unless$was eq $_}’
-e syntax OK
$op = shift @ARGV ⎪⎪ die("usage: $0 code [...]");
chomp(@ARGV = <ARGV>) unless @ARGV;
foreach $_ (@ARGV) {
$was = $_;
eval $op;
die $@ if $@;
rename $was, $_ unless $was eq $_;
}

$ perl -MO=Deparse,-si2 myperlprogram

-p å¼å³æ§å¶å¨å¸¸å¸¸å¯ä»¥ä¸å åæ¬å·çå°æ¹å ä¸å®ä»¬ï¼

$ perl -MO=Deparse -e ’print "Hello, world\n"’
-e syntax OK
print "Hello, world\n";
$ perl -MO=Deparse,-p -e ’print "Hello, world\n"’
-e syntax OK
print("Hello, world\n");

è¦ç¥éæ´å¤ï¼è¯·åè B::Deparse

Lint åç«¯

è¦è¿è¡ä¸ä¸ªé£æ ¼æ£æ¥å¨æ£å¯ä½ çä»£ç ï¼

$ perl -MO=Lint myperlprogram

è¦åæ¶å¯¹ä¸ä¸æåæ²¡æå®ä¹çåç¨åºçæ£æ¥ï¼

$ perl -MO=Lint,-context,-undefined-subs myperlprogram

è¦ç¥éæ´å¤çéé¡¹ä¿¡æ¯ï¼è¯·ç B::Lint

The Simple C Back End ç®åçCåç«¯

"perlcc" å·¥å·ç¼ºçæ¯çæä»¥ä¸çå¯æ§è¡æä»¶ã

perlcc myperlprogram.pl

The Bytecode Back End åèç åç«¯

è¦æPerlè½¬æ¢æå¯æ§è¡çåèç ï¼ä½ å¯ä»¥ä½¿ç¨ "perlcc" ç "-B" å¼å³:

perlcc -B myperlprogram.pl

The Optimized C Back End ä¼åçCåç«¯

perlcc -O myperlprogram.pl

perlcc -O Myperlmodule.pm

ç¥éæ´å¤ï¼è¯·åè perlcc å B::CC.

Module List for the Compiler Suite ç¼è¯å¥ä»¶çæ¨¡ååè¡¨

	B		è¿ä¸ªæ¨¡åæ¯ä¸ä¸ªèªççï¼introspectiveï¼ç¨Javaçæ¯è¯- è¯´å°±æ¯âreflectiveâï¼æ¨¡åï¼åè®¸Perlç¨åºå®¡è§èªå·±çåé¨ãåç«¯æ¨¡åé½æ¯éè¿è¿ä¸ªæ¨¡åæ¥è®¿é®è¯- æ³åææ çãèä½ ï¼åç«¯æ¨¡åçç¨æ·ï¼å°±ä¸ç¨åBæ¨¡åæäº¤éäºã
	O		è¿ä¸ªæ¨¡åæ¯ç¼è¯å¨çé£äºåç«¯çåç«¯ï¼ä¸è¬åè¿æ ·è¿è¡è°ç¨ï¼

$ perl -MO=Deparse myperlprogram

è¿ä¸å¨è¿ä¸ªPerlç¨åºä¸ä½¿ç¨ "use O ’Deparse’" ç¸åã

B::Asmdata

è¿ä¸ªæ¨¡åè¢« B::Assembler æ¨¡åä½¿ç¨ï¼è B::Assembler åæ¥çè¢« B::Bytecode æ¨¡åä½¿ç¨ï¼B::Bytecodeä¸æä¸ä¸ªåèç å½¢å¼åæ¾çè¯- æ³åææä»¥ä¾¿ä»¥åè£å¥ãB::Asmdataèªå·±å¹¶ä¸ç®æ¯ä¸ä¸ªåç«¯ï¼ä¹è®¸è¯´å®æ¯åç«¯çä¸ä¸ªç»ä»¶æ¯è¾å¥½ã

B::Assembler

B::Bblock

B::Bytecode

B::C

B::CC

B::Concise

B::Debug

B::Deparse

B::Disassembler

B::Lint

B::Showlex

$ perl -MO=Showlex,mysub myperlprogram

$ perl -MO=Showlex myperlprogram

[ BROKEN ]

B::Stackobj

B::Stash

B::Terse

è¿ä¸ªæ¨¡åç¨æ¥æå°è¯- æ³æ çåå®¹ï¼ä½æ¯ä¿¡æ¯ä¸ä¼æB::Debugæå°çé£ä¹å¤ãå¯¹æ¯æ¥è¯´ï¼"print "Hello, world."" ä¼è®© B::Debug äº§ç96è¡è¾åºï¼ ä½æ¯ B::Terseåªä¼æ6è¡ã

B::Xref

KNOWN PROBLEMS å·²ç¥çé®é¢

ç®å C åç«¯ç®ååªä¿åä»¥åç¬¦åæ°åå½åçç±»åè¯´æ

AUTHOR ä½è

è¿ç¯æç« æåæ¯ç± Nathan Torkington ç¼åï¼ç°å¨ç±é®ä»¶åè¡¨(perl5-porters@perl.org.)ç»´æ¤

è¯è

éé(sunny65535) <sunny65535@263.net>

è·

æ¬é¡µé¢ä¸æçç±ä¸æ man æåé¡µè®¡åæä¾ã
ä¸æ man æåé¡µè®¡åï¼https://github.com/man-pages-zh/manpages-zh

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