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1 // Copyright (c) 2011 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 #include "components/autofill/browser/autofill_scanner.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "components/autofill/browser/autofill_field.h" | |
9 | |
10 namespace autofill { | |
11 | |
12 AutofillScanner::AutofillScanner( | |
13 const std::vector<const AutofillField*>& fields) | |
14 : cursor_(fields.begin()), | |
15 saved_cursor_(fields.begin()), | |
16 begin_(fields.begin()), | |
17 end_(fields.end()) { | |
18 } | |
19 | |
20 AutofillScanner::~AutofillScanner() { | |
21 } | |
22 | |
23 void AutofillScanner::Advance() { | |
24 DCHECK(!IsEnd()); | |
25 ++cursor_; | |
26 } | |
27 | |
28 const AutofillField* AutofillScanner::Cursor() const { | |
29 if (IsEnd()) { | |
30 NOTREACHED(); | |
31 return NULL; | |
32 } | |
33 | |
34 return *cursor_; | |
35 } | |
36 | |
37 bool AutofillScanner::IsEnd() const { | |
38 return cursor_ == end_; | |
39 } | |
40 | |
41 void AutofillScanner::Rewind() { | |
42 DCHECK(saved_cursor_ != end_); | |
43 cursor_ = saved_cursor_; | |
44 saved_cursor_ = end_; | |
45 } | |
46 | |
47 void AutofillScanner::RewindTo(size_t index) { | |
48 DCHECK(index < static_cast<size_t>(end_ - begin_)); | |
49 cursor_ = begin_ + index; | |
50 saved_cursor_ = end_; | |
51 } | |
52 | |
53 size_t AutofillScanner::SaveCursor() { | |
54 saved_cursor_ = cursor_; | |
55 return static_cast<size_t>(cursor_ - begin_); | |
56 } | |
57 | |
58 } // namespace autofill | |
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