From: Tanaka Akira <akr@...17n.org>
Date: 2001-12-10T18:29:29+09:00
Subject: [ruby-dev:15410] pp - pretty printing

$B$5$F!"(Btime.rb $B$,JRIU$$$?$N$G!"<!$O(B pp.rb $B$N$40U8+Jg=8$G$9!#(B

pp.rb ($B$H(B prettyprint.rb) $B$O!"C<E*$K$$$($P!"(Bindent $B$7$F$/$l$k(B p $B$G$9!#(B

$B$D$^$j!"(Bp obj $B$N7k2L$N(B

  #<PP:0x806486c @stack=[], @nest=[0], @buf=#<PP::Group:0x8064844 @tail=0, @singleline_length=9, @buf=[#<PP::Group:0x80647cc @tail=0, @singleline_length=9, @buf=[#<PP::Text:0x8064768 @text="[">, #<PP::Group:0x80646c8 @tail=1, @singleline_length=1, @buf=[#<PP::Text:0x8064664 @text="1">]>, #<PP::Text:0x80646b4 @text=",">, #<PP::Breakable:0x8064650 @indent=1, @sep=" ">, #<PP::Group:0x8064614 @tail=1, @singleline_length=1, @buf=[#<PP::Text:0x80645b0 @text="2">]>, #<PP::Text:0x8064600 @text=",">, #<PP::Breakable:0x806459c @indent=1, @sep=" ">, #<PP::Group:0x8064560 @tail=1, @singleline_length=1, @buf=[#<PP::Text:0x80644fc @text="3">]>, #<PP::Text:0x806472c @text="]">]>]>>

$B$J$I$H$$$&FI$`5$$K$J$i$J$$=PNO$N$+$o$j$K(B pp obj $B$O(B

  #<PP:0x403279c
   @buf=
    #<PP::Group:0x4032666
     @buf=
      [#<PP::Group:0x4032666
        @buf=
         [#<PP::Text:0x40326de @text="[">,
          #<PP::Group:0x4032666
           @buf=[#<PP::Text:0x40326de @text="1">],
           @singleline_length=1,
           @tail=1>,
          #<PP::Text:0x40326de @text=",">,
          #<PP::Breakable:0x40326b6 @indent=1, @sep=" ">,
          #<PP::Group:0x4032666
           @buf=[#<PP::Text:0x40326de @text="2">],
           @singleline_length=1,
           @tail=1>,
          #<PP::Text:0x40326de @text=",">,
          #<PP::Breakable:0x40326b6 @indent=1, @sep=" ">,
          #<PP::Group:0x4032666
           @buf=[#<PP::Text:0x40326de @text="3">],
           @singleline_length=1,
           @tail=1>,
          #<PP::Text:0x40326de @text="]">],
        @singleline_length=9,
        @tail=0>],
     @singleline_length=9,
     @tail=0>,
   @nest=[0],
   @stack=[]>

$B$H$$$&$h$&$K2~9T!&%$%s%G%s%H$7$F=PNO$r9T$J$$$^$9!#(B

$B$9$3$7C5$7$?HO0O$G$O%a!<%j%s%0%j%9%H$K$O$3$N$h$&$J5!G=$K4X$9$kOCBj$O8+(B
$BEv$?$i$J$+$C$?$N$G$9$,!"(BRAA $B$KEPO?$7$?8e$K(B 2$B2sH?1~$,=P$F$$$^$9!#(B

  [ruby-dev:14390] [Patch] pp.rb and debug.rb
  [ruby-list:32832] irb & pp

$B;d$NL\$+$i8+$F5DO@$,I,MW$=$&$J$H$3$m$O<!$N$h$&$J$H$3$m$G$9!#(B

* Wadler $B$N(B pretty printing algebra $B$r:NMQ$7$?$N$O@5$7$+$C$?$N$+(B?
  $B5!G=$,B-$j$J$/$J$$$+(B?

* inspect $B$H(B pretty_print $B$rN>J}<BAu$9$k>l9g$K4X$9$k9M;!(B
  ($B0l2s9M$($F$*$+$J$$$H$J!<$H;W$$$D$D:#$N$H$3$m:$$C$F$J$$$N$G2?$b9M$((B
  $B$F$$$J$$!#(B)

$B$"$H!"Cf?H$O5;=QE*$K$O(B

  prettyprint.rb:
    Wadler $B$N(B pretty printing algebra $B$N<BAu!#(B
    $B>\:Y$r@bL@$9$k$N$OLLE]$J$N$G$3$3$G$O$7$^$;$s$,!";d$NCN$C$F$$$k$3$N(B
    $BN`$NOC$NCf$G$3$l$O$b$C$H$bC1=c$J$b$N$G$9!#>\:Y$K$D$$$F$OCf$K=q$$$F(B
    $B$"$k;29MJ88%$K>\$7$/=q$$$F$"$j$^$9!#(B

  pp.rb:
    prettyprint.rb $B$rMxMQ$7$?%$%s%G%s%H$D$-(B p $B$N<BAu!#(B

$B$H$$$&$U$?$D$N%l%$%d$K$o$+$l$F$*$j!"86M}E*$K$$$($P(B prettyprint.rb $B$O(B
pp.rb $B0J30$+$i$b;H$($k$O$:$G$9!#(B

$B6=L#$N$"$k?M$O;n$7$F2<$5$$!#(B

http://www.ruby-lang.org/~knu/cgi-bin/cvsweb.cgi/rough/lib/pp.rb?rev=HEAD&content-type=text/x-cvsweb-markup
http://www.ruby-lang.org/~knu/cgi-bin/cvsweb.cgi/rough/lib/prettyprint.rb?rev=HEAD&content-type=text/x-cvsweb-markup
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$U$($m(B! $B$o$+$a$A$c$s:n@o$G$9$(C"=$B!W(B(Little Worker, $B7KM7@84](B)