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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_COMMON_ADDRESS_PARSER_INTERNAL_H_
      6 #define CONTENT_COMMON_ADDRESS_PARSER_INTERNAL_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/strings/string_tokenizer.h"
     11 #include "content/common/content_export.h"
     12 
     13 namespace content {
     14 
     15 namespace address_parser {
     16 
     17 // Internal classes and functions for address parsing.
     18 namespace internal {
     19 
     20 // Exposed for tests.
     21 struct CONTENT_EXPORT Word {
     22   string16::const_iterator begin;
     23   string16::const_iterator end;
     24 
     25   Word() {}
     26   Word(const string16::const_iterator& begin,
     27        const string16::const_iterator& end);
     28 };
     29 
     30 // Exposed for tests.
     31 class CONTENT_EXPORT HouseNumberParser {
     32  public:
     33   HouseNumberParser() {}
     34 
     35   bool Parse(const string16::const_iterator& begin,
     36              const string16::const_iterator& end,
     37              Word* word);
     38 
     39  private:
     40   static inline bool IsPreDelimiter(char16 character);
     41   static inline bool IsPostDelimiter(char16 character);
     42   inline void RestartOnNextDelimiter();
     43 
     44   inline bool CheckFinished(Word* word) const;
     45   inline void AcceptChars(size_t num_chars);
     46   inline void SkipChars(size_t num_chars);
     47   inline void ResetState();
     48 
     49   // Iterators to the beginning, current position and ending of the string
     50   // being currently parsed.
     51   string16::const_iterator begin_;
     52   string16::const_iterator it_;
     53   string16::const_iterator end_;
     54 
     55   // Number of digits found in the current result candidate.
     56   size_t num_digits_;
     57 
     58   // Number of characters previous to the current iterator that belong
     59   // to the current result candidate.
     60   size_t result_chars_;
     61 
     62   DISALLOW_COPY_AND_ASSIGN(HouseNumberParser);
     63 };
     64 
     65 typedef std::vector<Word> WordList;
     66 typedef base::StringTokenizerT<string16, string16::const_iterator>
     67     String16Tokenizer;
     68 
     69 // These are exposed for tests.
     70 CONTENT_EXPORT bool FindStateStartingInWord(WordList* words,
     71                                             size_t state_first_word,
     72                                             size_t* state_last_word,
     73                                             String16Tokenizer* tokenizer,
     74                                             size_t* state_index);
     75 
     76 CONTENT_EXPORT bool IsValidLocationName(const Word& word);
     77 CONTENT_EXPORT bool IsZipValid(const Word& word, size_t state_index);
     78 CONTENT_EXPORT bool IsZipValidForState(const Word& word, size_t state_index);
     79 
     80 }  // namespace internal
     81 
     82 }  // namespace address_parser
     83 
     84 }  // namespace content
     85 
     86 #endif  // CONTENT_COMMON_ADDRESS_PARSER_INTERNAL_H_
     87