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      1 // Copyright 2014 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 "config.h"
      6 #include "core/css/parser/MediaQueryBlockWatcher.h"
      7 
      8 #include "core/css/parser/MediaQueryToken.h"
      9 
     10 namespace blink {
     11 
     12 MediaQueryBlockWatcher::MediaQueryBlockWatcher()
     13     : m_blockLevel(0)
     14 {
     15 }
     16 
     17 void MediaQueryBlockWatcher::handleToken(const MediaQueryToken& token)
     18 {
     19     if (token.blockType() == MediaQueryToken::BlockStart) {
     20         ++m_blockLevel;
     21     } else if (token.blockType() == MediaQueryToken::BlockEnd) {
     22         ASSERT(m_blockLevel);
     23         --m_blockLevel;
     24     }
     25 }
     26 
     27 } // namespace
     28 
     29