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-rw-r--r--utils/dict.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/utils/dict.h b/utils/dict.h
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+++ b/utils/dict.h
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+#ifndef DICT_H_
+#define DICT_H_
+
+
+#include <cassert>
+#include <cstring>
+
+#include <string>
+#include <vector>
+#include "hash.h"
+#include "wordid.h"
+
+class Dict {
+ typedef
+ HASH_MAP<std::string, WordID, boost::hash<std::string> > Map;
+ public:
+ Dict() : b0_("<bad0>") {
+ HASH_MAP_EMPTY(d_,"<bad1>");
+ words_.reserve(1000);
+ }
+
+ inline int max() const { return words_.size(); }
+
+ inline WordID Convert(const std::string& word, bool frozen = false) {
+ Map::iterator i = d_.find(word);
+ if (i == d_.end()) {
+ if (frozen)
+ return 0;
+ words_.push_back(word);
+ d_[word] = words_.size();
+ return words_.size();
+ } else {
+ return i->second;
+ }
+ }
+
+ inline WordID Convert(const std::vector<std::string>& words, bool frozen = false)
+ { return Convert(toString(words), frozen); }
+
+ static inline std::string toString(const std::vector<std::string>& words) {
+ std::string word= "";
+ for (std::vector<std::string>::const_iterator it=words.begin();
+ it != words.end(); ++it) {
+ if (it != words.begin()) word += " ||| ";
+ word += *it;
+ }
+ return word;
+ }
+
+ inline const std::string& Convert(const WordID& id) const {
+ if (id == 0) return b0_;
+ assert(id <= (int)words_.size());
+ return words_[id-1];
+ }
+
+ void AsVector(const WordID& id, std::vector<std::string>* results) const;
+
+ void clear() { words_.clear(); d_.clear(); }
+
+ private:
+ const std::string b0_;
+ std::vector<std::string> words_;
+ Map d_;
+};
+
+#endif