content/common/android/address_parser_internal.h

   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_