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// Copyright 2010, Google Inc.
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// All rights reserved.
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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
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef MOZC_CONVERTER_LATTICE_H_
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#define MOZC_CONVERTER_LATTICE_H_
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#include "base/base.h"
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#include "base/freelist.h"
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#include "converter/node.h"
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class NodeAllocatorInterface;
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NodeAllocatorInterface *node_allocator() const;
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// set key and initalizes lattice with key.
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void SetKey(const string &key);
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const string& key() const;
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// return nodes (linked list) starting with |pos|.
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// To traverse all nodes, use Node::bnext member.
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Node *begin_nodes(size_t pos) const;
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// return nodes (linked list) ending at |pos|.
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// To traverse all nodes, use Node::enext member.
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Node *end_nodes(size_t pos) const;
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// alias of end_nodes(0).
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Node *bos_nodes() const;
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// alias of begin_nodes(key.size()).
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Node *eos_nodes() const;
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// inset nodes (linked list) to the position |pos|.
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void Insert(size_t pos, Node *node);
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// clear all lattice and nodes allocated with NewNode method.
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// return true if this instance has a valid lattice.
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bool has_lattice() const;
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vector<Node *> begin_nodes_;
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vector<Node *> end_nodes_;
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scoped_ptr<NodeAllocator> node_allocator_;
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#endif // MOZC_CONVERTER_LATTICE_H_