components/content_settings/core/browser/content_settings_rule.cc

   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 "base/logging.h"
   6 #include "components/content_settings/core/browser/content_settings_rule.h"
   7
   8 namespace content_settings {
   9
  10 Rule::Rule() {}
  11
  12 Rule::Rule(
  13     const ContentSettingsPattern& primary_pattern,
  14     const ContentSettingsPattern& secondary_pattern,
  15     base::Value* value)
  16     : primary_pattern(primary_pattern),
  17       secondary_pattern(secondary_pattern),
  18       value(value) {
  19   DCHECK(value);
  20 }
  21
  22 Rule::~Rule() {}
  23
  24 RuleIterator::~RuleIterator() {}
  25
  26 EmptyRuleIterator::~EmptyRuleIterator() {}
  27
  28 bool EmptyRuleIterator::HasNext() const {
  29   return false;
  30 }
  31
  32 Rule EmptyRuleIterator::Next() {
  33   NOTREACHED();
  34   return Rule();
  35 }
  36
  37 ConcatenationIterator::ConcatenationIterator(
  38     ScopedVector<RuleIterator>* iterators,
  39     base::AutoLock* auto_lock)
  40     : auto_lock_(auto_lock) {
  41   iterators_.swap(*iterators);
  42
  43   ScopedVector<RuleIterator>::iterator it = iterators_.begin();
  44   while (it != iterators_.end()) {
  45     if (!(*it)->HasNext())
  46       it = iterators_.erase(it);
  47     else
  48       ++it;
  49   }
  50 }
  51
  52 ConcatenationIterator::~ConcatenationIterator() {}
  53
  54 bool ConcatenationIterator::HasNext() const {
  55   return (!iterators_.empty());
  56 }
  57
  58 Rule ConcatenationIterator::Next() {
  59   ScopedVector<RuleIterator>::iterator current_iterator =
  60       iterators_.begin();
  61   DCHECK(current_iterator != iterators_.end());
  62   DCHECK((*current_iterator)->HasNext());
  63   const Rule& to_return = (*current_iterator)->Next();
  64   if (!(*current_iterator)->HasNext())
  65     iterators_.erase(current_iterator);
  66   return to_return;
  67 }
  68
  69 }  // namespace content_settings