58 lines
2.0 KiB
Factor
58 lines
2.0 KiB
Factor
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!: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: vectors
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USE: arithmetic
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USE: kernel
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USE: stack
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: vector-empty? ( obj -- ? )
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vector-length 0 = ;
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: vector-clear ( vector -- list )
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#! Clears a vector.
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0 swap set-vector-length ;
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: vector-push ( obj vector -- )
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#! Push a value on the end of a vector.
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dup vector-length swap set-vector-nth ;
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: vector-peek ( vector -- obj )
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#! Get value at end of vector without removing it.
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dup vector-length pred swap vector-nth ;
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: vector-pop ( vector -- obj )
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#! Get value at end of vector and remove it.
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dup vector-length pred ( vector top )
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2dup swap vector-nth >r swap set-vector-length r> ;
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DEFER: vector-map
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: clone-vector ( vector -- vector )
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#! Shallow copy of a vector.
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[ ] vector-map ;
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