133 lines
3.4 KiB
Factor
133 lines
3.4 KiB
Factor
! :folding=indent:collapseFolds=1:
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! $Id$
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!
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! Copyright (C) 2004 Slava Pestov.
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are met:
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!
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! 1. Redistributions of source code must retain the above copyright notice,
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! this list of conditions and the following disclaimer.
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!
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! 2. Redistributions in binary form must reproduce the above copyright notice,
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! this list of conditions and the following disclaimer in the documentation
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! and/or other materials provided with the distribution.
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!
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! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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IN: unparser
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USE: generic
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USE: kernel
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USE: lists
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USE: math
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USE: namespaces
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USE: parser
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USE: stdio
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USE: strings
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USE: words
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GENERIC: unparse ( obj -- str )
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M: object unparse ( obj -- str )
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[
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"#<" ,
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dup class unparse ,
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" @ " ,
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address unparse ,
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">" ,
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] make-string ;
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: >digit ( n -- ch )
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dup 10 < [ CHAR: 0 + ] [ 10 - CHAR: a + ] ifte ;
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: integer, ( num radix -- )
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dup >r /mod >digit , dup 0 > [
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r> integer,
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] [
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r> 2drop
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] ifte ;
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: >base ( num radix -- string )
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#! Convert a number to a string in a certain base.
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[
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over 0 < [
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swap neg swap integer, CHAR: - ,
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] [
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integer,
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] ifte
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] make-rstring ;
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: >dec ( num -- string ) 10 >base ;
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: >bin ( num -- string ) 2 >base ;
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: >oct ( num -- string ) 8 >base ;
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: >hex ( num -- string ) 16 >base ;
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M: fixnum unparse ( obj -- str ) >dec ;
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M: bignum unparse ( obj -- str ) >dec ;
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M: ratio unparse ( num -- str )
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[
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dup
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numerator unparse ,
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CHAR: / ,
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denominator unparse ,
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] make-string ;
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: fix-float ( str -- str )
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#! This is terrible. Will go away when we do our own float
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#! output.
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"." over str-contains? [ ".0" cat2 ] unless ;
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M: float unparse ( float -- str )
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(unparse-float) fix-float ;
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M: complex unparse ( num -- str )
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[
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"#{ " ,
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dup
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real unparse ,
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" " ,
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imaginary unparse ,
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" }#" ,
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] make-string ;
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: ch>ascii-escape ( ch -- esc )
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[
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[[ CHAR: \e "\\e" ]]
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[[ CHAR: \n "\\n" ]]
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[[ CHAR: \r "\\r" ]]
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[[ CHAR: \t "\\t" ]]
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[[ CHAR: \0 "\\0" ]]
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[[ CHAR: \\ "\\\\" ]]
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[[ CHAR: \" "\\\"" ]]
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] assoc ;
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: ch>unicode-escape ( ch -- esc )
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>hex 4 "0" pad "\\u" swap cat2 ;
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: unparse-ch ( ch -- ch/str )
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dup quotable? [
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dup ch>ascii-escape [ ch>unicode-escape ] ?unless
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] unless ;
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M: string unparse ( str -- str )
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[
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CHAR: " , [ unparse-ch , ] str-each CHAR: " ,
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] make-string ;
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M: word unparse ( obj -- str )
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word-name dup "#<unnamed>" ? ;
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M: t unparse drop "t" ;
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M: f unparse drop "f" ;
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