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/*
* Copyright (C) 2021 Metrological Group B.V.
* Copyright (C) 2021 Igalia S.L.
* Copyright (C) 2023-2024 Apple Inc. All rights reserved.
* Copyright (C) 2024 Samuel Weinig <sam@webkit.org>
*
* 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 APPLE INC. ``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 APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CSSPrimitiveNumericTypes.h"
#include "CSSValueKeywords.h"
#include "SystemFontDatabase.h"
#include <optional>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
#include <wtf/text/AtomString.h>
namespace WebCore {
class CSSParserTokenRange;
class CSSPrimitiveValue;
class CSSValue;
class CSSValueList;
class ScriptExecutionContext;
enum CSSParserMode : uint8_t;
enum CSSValueID : uint16_t;
enum class FontTechnology : uint8_t;
struct CSSParserContext;
namespace CSS {
struct PropertyParserState;
}
namespace WebKitFontFamilyNames {
enum class FamilyNamesIndex;
}
namespace CSSPropertyParserHelpers {
// MARK: - Font
// normal | italic | oblique <angle [-90deg,90deg]>?
using UnresolvedFontStyleObliqueAngle = CSS::Angle<CSS::Range{-90, 90}>;
using UnresolvedFontStyle = Variant<CSSValueID, UnresolvedFontStyleObliqueAngle>;
// normal | small-caps
using UnresolvedFontVariantCaps = CSSValueID;
// normal | bold | bolder | lighter | <number [1,1000]>
using UnresolvedFontWeightNumber = CSS::Number<CSS::Range{1, 1000}>;
using UnresolvedFontWeight = Variant<CSSValueID, UnresolvedFontWeightNumber>;
// normal | <percentage [0,∞]> | ultra-condensed | extra-condensed | condensed | semi-condensed | semi-expanded | expanded | extra-expanded | ultra-expanded
using UnresolvedFontWidthPercentage = CSS::Percentage<CSS::Nonnegative>;
using UnresolvedFontWidth = Variant<CSSValueID, UnresolvedFontWidthPercentage>;
// <absolute-size> | <relative-size> | <length-percentage [0,∞]>
using UnresolvedFontSize = Variant<CSSValueID, CSS::LengthPercentage<CSS::Nonnegative>>;
// normal | <number [0,∞]> | <length-percentage [0,∞]>
using UnresolvedFontLineHeight = Variant<CSSValueID, CSS::Number<CSS::Nonnegative>, CSS::LengthPercentage<CSS::Nonnegative>>;
// [ <family-name> | <generic-family> ]#
using UnresolvedFontFamilyName = Variant<CSSValueID, AtomString>;
using UnresolvedFontFamily = Vector<UnresolvedFontFamilyName>;
struct UnresolvedFont {
UnresolvedFontStyle style;
UnresolvedFontVariantCaps variantCaps;
UnresolvedFontWeight weight;
UnresolvedFontWidth width;
UnresolvedFontSize size;
UnresolvedFontLineHeight lineHeight;
UnresolvedFontFamily family;
};
// MARK: 'font' (shorthand)
// https://drafts.csswg.org/css-fonts-4/#font-prop
std::optional<UnresolvedFont> parseUnresolvedFont(const String&, ScriptExecutionContext&, std::optional<CSSParserMode> parserModeOverride = std::nullopt);
// MARK: 'font-style'
// https://drafts.csswg.org/css-fonts-4/#font-style-prop
RefPtr<CSSValue> consumeFontStyle(CSSParserTokenRange&, CSS::PropertyParserState&);
// MARK: 'font-family'
// https://drafts.csswg.org/css-fonts-4/#font-family-prop
RefPtr<CSSValue> consumeFontFamily(CSSParserTokenRange&, CSS::PropertyParserState&);
// Sub-production of 'font-family': <family-name>
// https://drafts.csswg.org/css-fonts-4/#family-name-syntax
RefPtr<CSSValue> consumeFamilyName(CSSParserTokenRange&, CSS::PropertyParserState&);
// Sub-production of 'font-family': <generic-family>
// https://drafts.csswg.org/css-fonts-4/#generic-family-name-syntax
const AtomString& genericFontFamily(CSSValueID);
WebKitFontFamilyNames::FamilyNamesIndex genericFontFamilyIndex(CSSValueID);
// MARK: 'font-size-adjust'
// https://drafts.csswg.org/css-fonts-4/#font-size-adjust-prop
RefPtr<CSSValue> consumeFontSizeAdjust(CSSParserTokenRange&, CSS::PropertyParserState&);
// MARK: - @font-face descriptor consumers
// MARK: @font-face 'font-family'
// https://drafts.csswg.org/css-fonts-4/#font-family-desc
RefPtr<CSSValue> parseFontFaceFontFamily(const String&, ScriptExecutionContext&);
// MARK: @font-face 'src'
// https://drafts.csswg.org/css-fonts-4/#src-desc
RefPtr<CSSValueList> parseFontFaceSrc(const String&, ScriptExecutionContext&);
RefPtr<CSSValueList> consumeFontFaceSrc(CSSParserTokenRange&, CSS::PropertyParserState&);
// Sub-production of 'src: <font-tech>
// https://drafts.csswg.org/css-fonts-4/#font-tech-values
Vector<FontTechnology> consumeFontTech(CSSParserTokenRange&, CSS::PropertyParserState&, bool singleValue = false);
// Sub-production of 'src': <font-format>
// https://drafts.csswg.org/css-fonts-4/#font-format-values
String consumeFontFormat(CSSParserTokenRange&, CSS::PropertyParserState&, bool rejectStringValues = false);
// MARK: @font-face 'size-adjust'
// https://drafts.csswg.org/css-fonts-5/#descdef-font-face-size-adjust
RefPtr<CSSValue> parseFontFaceSizeAdjust(const String&, ScriptExecutionContext&);
// MARK: @font-face 'unicode-range'
// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-unicode-range
RefPtr<CSSValueList> parseFontFaceUnicodeRange(const String&, ScriptExecutionContext&);
// MARK: @font-face 'font-display'
// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-display
RefPtr<CSSValue> parseFontFaceDisplay(const String&, ScriptExecutionContext&);
// MARK: @font-face 'font-style'
// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-style
RefPtr<CSSValue> parseFontFaceFontStyle(const String&, ScriptExecutionContext&);
RefPtr<CSSValue> consumeFontFaceFontStyle(CSSParserTokenRange&, CSS::PropertyParserState&);
// MARK: @font-face 'font-feature-settings'
// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-feature-settings
RefPtr<CSSValue> parseFontFaceFeatureSettings(const String&, ScriptExecutionContext&);
// Sub-production of 'font-feature-settings': <feature-tag-value>
// https://drafts.csswg.org/css-fonts-4/#feature-tag-value
RefPtr<CSSValue> consumeFeatureTagValue(CSSParserTokenRange&, CSS::PropertyParserState&);
// MARK: @font-face 'font-variation-settings'
// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-variation-settings
#if ENABLE(VARIATION_FONTS)
// Sub-production of 'font-variation-settings': <variation-tag-value>
RefPtr<CSSValue> consumeVariationTagValue(CSSParserTokenRange&, CSS::PropertyParserState&);
#endif
// MARK: @font-face 'font-width'
// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-width
RefPtr<CSSValue> parseFontFaceFontWidth(const String&, ScriptExecutionContext&);
// MARK: @font-face 'font-weight'
// https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-weight
RefPtr<CSSValue> parseFontFaceFontWeight(const String&, ScriptExecutionContext&);
// MARK: - @font-feature-values descriptor consumers
// MARK: @font-feature-values 'prelude family name list'
// https://drafts.csswg.org/css-fonts-4/#font-feature-values-syntax
Vector<AtomString> consumeFontFeatureValuesPreludeFamilyNameList(CSSParserTokenRange&, const CSSParserContext&);
// Template and inline implementations are at the bottom of the file for readability.
inline bool isSystemFontShorthand(CSSValueID valueID)
{
// This needs to stay in sync with SystemFontDatabase::FontShorthand.
static_assert(CSSValueStatusBar - CSSValueCaption == static_cast<SystemFontDatabase::FontShorthandUnderlyingType>(SystemFontDatabase::FontShorthand::StatusBar));
return valueID >= CSSValueCaption && valueID <= CSSValueStatusBar;
}
inline SystemFontDatabase::FontShorthand lowerFontShorthand(CSSValueID valueID)
{
// This needs to stay in sync with SystemFontDatabase::FontShorthand.
ASSERT(isSystemFontShorthand(valueID));
return static_cast<SystemFontDatabase::FontShorthand>(valueID - CSSValueCaption);
}
} // namespace CSSPropertyParserHelpers
} // namespace WebCore
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