2004-07-22 19:48:50 -04:00
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! :folding=indent:collapseFolds=1:
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2004-07-16 02:26:21 -04:00
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! $Id$
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!
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! Copyright (C) 2003, 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: vectors
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USE: arithmetic
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USE: combinators
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USE: kernel
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USE: logic
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USE: stack
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: vector-each ( vector code -- )
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#! Execute the code, with each element of the vector
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#! pushed onto the stack.
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over vector-length [
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-rot 2dup >r >r >r vector-nth r> call r> r>
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] times* 2drop ;
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: (vector-map-step) ( element code -- result code )
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dup >r call r> ;
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: (vector-map) ( code target element -- result code target )
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-rot >r (vector-map-step) r> ;
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: vector-map ( vector code -- vector )
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#! Applies code to each element of the vector, return a new
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#! vector with the results. The code must have stack effect
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#! ( obj -- obj ).
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over vector-length <vector> rot [
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(vector-map) swapd tuck vector-push
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] vector-each nip ;
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: vector-and ( vector -- ? )
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#! Logical and of all elements in the vector.
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t swap [ and ] vector-each ;
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: vector-all? ( vector pred -- ? )
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vector-map vector-and ;
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