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gecode
gist
node.cpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Guido Tack <tack@gecode.org>
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*
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* Copyright:
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* Guido Tack, 2006
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*
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* Last modified:
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* $Date: 2016-04-25 10:30:39 +0200 (Mon, 25 Apr 2016) $ by $Author: schulte $
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* $Revision: 14980 $
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <
gecode/support.hh
>
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#include <
gecode/gist/node.hh
>
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#include <
gecode/gist/visualnode.hh
>
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#include <cassert>
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namespace
Gecode
{
namespace
Gist {
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void
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Node::setNumberOfChildren
(
unsigned
int
n
,
NodeAllocator
& na) {
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assert(getTag() == UNDET);
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switch
(
n
) {
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case
0:
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setTag(LEAF);
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break
;
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case
1:
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childrenOrFirstChild =
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reinterpret_cast<
void
*
>
(
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static_cast<
ptrdiff_t
>
(na.allocate(
getIndex
(na)) << 2));
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noOfChildren = 1;
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setTag(TWO_CHILDREN);
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break
;
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case
2:
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{
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int
idx =
getIndex
(na);
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childrenOrFirstChild =
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reinterpret_cast<
void
*
>
(
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static_cast<
ptrdiff_t
>
(na.allocate(idx) << 2));
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noOfChildren = -na.allocate(idx);
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setTag(TWO_CHILDREN);
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}
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break
;
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default
:
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{
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int
idx =
getIndex
(na);
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noOfChildren =
n
;
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int
* children =
heap
.
alloc
<
int
>(
n
);
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childrenOrFirstChild =
static_cast<
void
*
>
(children);
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setTag(MORE_CHILDREN);
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for
(
unsigned
int
i
=
n
;
i
--;)
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children[
i
] = na.allocate(idx);
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}
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}
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}
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}}
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// STATISTICS: gist-any
Test::Int::Basic::i
Gecode::IntArgs i(4, 1, 2, 3, 4)
Gecode::Gist::Node::getIndex
int getIndex(const NodeAllocator &na) const
Return index of this node.
Definition:
node.hpp:231
Gecode::Gist::Node::setNumberOfChildren
void setNumberOfChildren(unsigned int n, NodeAllocator &na)
Set the number of children to n and initialize children.
Definition:
node.cpp:46
Gecode::Heap::alloc
T * alloc(long unsigned int n)
Allocate block of n objects of type T from heap.
Definition:
heap.hpp:435
node.hh
Gecode
Gecode toplevel namespace
Gecode::Gist::NodeAllocatorBase
Node allocator.
Definition:
node.hh:52
visualnode.hh
Gecode::heap
Heap heap
The single global heap.
Definition:
heap.cpp:48
support.hh
n
int n
Number of negative literals for node type.
Definition:
bool-expr.cpp:238