/*
 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
 * Copyright (C) 2012 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 */

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_PARSER_CSS_PARSER_MODE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_PARSER_CSS_PARSER_MODE_H_

namespace blink {

// Must not grow beyond 3 bits, due to packing in CSSPropertyValueSet.
enum CSSParserMode {
  kHTMLStandardMode,
  kHTMLQuirksMode,
  // SVG attributes are parsed in quirks mode but rules differ slightly.
  kSVGAttributeMode,
  // @viewport/@font-face rules are specially tagged in CSSPropertyValueSet so
  // CSSOM modifications don't treat them as style rules.
  kCSSViewportRuleMode,
  kCSSFontFaceRuleMode,
  // User agent stylesheets are parsed in standards mode but also allows
  // internal properties and values.
  kUASheetMode,
  // This should always be the last entry.
  kNumCSSParserModes
};

inline bool IsQuirksModeBehavior(CSSParserMode mode) {
  return mode == kHTMLQuirksMode;
}

inline bool IsUASheetBehavior(CSSParserMode mode) {
  return mode == kUASheetMode;
}

inline bool IsCSSViewportParsingEnabledForMode(CSSParserMode mode) {
  return mode == kCSSViewportRuleMode;
}

inline bool IsUseCounterEnabledForMode(CSSParserMode mode) {
  // We don't count the UA style sheet in our statistics.
  return mode != kUASheetMode;
}

// Used in CSSParser APIs to say if we should defer parsing of declaration lists
// in style rules until we need them for CSSOM access, or for applying matched
// rules to computed style.
enum class CSSDeferPropertyParsing { kNo, kYes };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_PARSER_CSS_PARSER_MODE_H_