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// Copyright (c) 1994 James Clark
// See the file COPYING for copying permission.
#ifndef TrieBuilder_INCLUDED
#define TrieBuilder_INCLUDED 1
#ifdef __GNUG__
#pragma interface
#endif
#include "types.h"
#include "StringOf.h"
#include "Owner.h"
#include "Trie.h"
#include "Vector.h"
#ifdef SP_NAMESPACE
namespace SP_NAMESPACE {
#endif
class TrieBuilder {
public:
typedef Vector<Token> TokenVector;
TrieBuilder(int nCodes);
void recognize(const String<EquivCode> &chars,
Token t,
Priority::Type pri,
TokenVector &ambiguities);
void recognize(const String<EquivCode> &chars,
const String<EquivCode> &set,
Token t,
Priority::Type pri,
TokenVector &ambiguities);
// recognize a delimiter with a blank sequence
void recognizeB(const String<EquivCode> &chars,
int bSequenceLength, // >= 1
size_t maxBlankSequenceLength,
const String<EquivCode> &blankCodes,
const String<EquivCode> &chars2,
Token t,
TokenVector &ambiguities);
void recognizeEE(EquivCode code, Token t);
Trie *extractTrie() { return root_.extract(); }
private:
TrieBuilder(const TrieBuilder &); // undefined
void operator=(const TrieBuilder &); // undefined
void doB(Trie *trie,
int tokenLength,
int minBLength,
size_t maxLength,
const String<EquivCode> &blankCodes,
const String<EquivCode> &chars2,
Token token,
Priority::Type pri,
TokenVector &ambiguities);
Trie *extendTrie(Trie *, const String<EquivCode> &);
void setToken(Trie *trie, int tokenLength, Token token, Priority::Type pri,
TokenVector &ambiguities);
Trie *forceNext(Trie *trie, EquivCode);
void copyInto(Trie *, const Trie *, int);
int nCodes_;
Owner<Trie> root_;
};
#ifdef SP_NAMESPACE
}
#endif
#endif /* not TrieBuilder_INCLUDED */
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