[Android] Split the address parser from AddressDetector for WebView use.

content/common/android/address_parser_internal.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_COMMON_ADDRESS_PARSER_INTERNAL_H_
+#define CONTENT_COMMON_ADDRESS_PARSER_INTERNAL_H_
+#pragma once
+
+#include <vector>
+
+#include "base/string_tokenizer.h"
+
+namespace content {
+
+namespace address_parser {
+
+// Internal classes and functions for address parsing.
+namespace internal {
+
+struct Word {
+  string16::const_iterator begin;
+  string16::const_iterator end;
+
+  Word() {}
+  Word(const string16::const_iterator& begin,
+       const string16::const_iterator& end);
+};
+
+class HouseNumberParser {
+ public:
+  HouseNumberParser() {}
+
+  bool Parse(const string16::const_iterator& begin,
+             const string16::const_iterator& end,
+             Word* word);
+
+ private:
+  static inline bool IsPreDelimiter(char16 character);
+  static inline bool IsPostDelimiter(char16 character);
+  inline void RestartOnNextDelimiter();
+
+  inline bool CheckFinished(Word* word) const;
+  inline void AcceptChars(size_t num_chars);
+  inline void SkipChars(size_t num_chars);
+  inline void ResetState();
+
+  // Iterators to the beginning, current position and ending of the string
+  // being currently parsed.
+  string16::const_iterator begin_;
+  string16::const_iterator it_;
+  string16::const_iterator end_;
+
+  // Number of digits found in the current result candidate.
+  size_t num_digits_;
+
+  // Number of characters previous to the current iterator that belong
+  // to the current result candidate.
+  size_t result_chars_;
+
+  DISALLOW_COPY_AND_ASSIGN(HouseNumberParser);
+};
+
+typedef std::vector<Word> WordList;
+typedef StringTokenizerT<string16, string16::const_iterator>
+    String16Tokenizer;
+
+bool FindStateStartingInWord(WordList* words,
+                             size_t state_first_word,
+                             size_t* state_last_word,
+                             String16Tokenizer* tokenizer,
+                             size_t* state_index);
+
+bool IsValidLocationName(const Word& word);
+bool IsZipValid(const Word& word, size_t state_index);
+bool IsZipValidForState(const Word& word, size_t state_index);
+
+}  // namespace internal
+
+}  // namespace address_parser
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_ADDRESS_PARSER_INTERNAL_H_