/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* CSS parsing utility functions */

#include "ServoCSSParser.h"

#include "mozilla/CSSPropertyId.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/dom/Document.h"

using namespace mozilla;
using namespace mozilla::dom;

/* static */
bool ServoCSSParser::IsValidCSSColor(const nsACString& aValue) {
  return Servo_IsValidCSSColor(&aValue);
}

/* static */
bool ServoCSSParser::IsValidCSSImage(const nsACString& aValue) {
  return Servo_IsValidCSSImage(&aValue);
}

/* static */
bool ServoCSSParser::ComputeColor(const StylePerDocumentStyleData* aStyleData,
                                  const nsACString& aValue,
                                  nscolor* aResultColor, bool* aWasCurrentColor,
                                  css::Loader* aLoader) {
  auto absolute =
      ComputeAbsoluteColor(aStyleData, aValue, aWasCurrentColor, aLoader);
  if (!absolute) {
    return false;
  }
  *aResultColor = absolute->ToColor();
  return true;
}

/* static */
Maybe<StyleAbsoluteColor> ServoCSSParser::ComputeAbsoluteColor(
    const StylePerDocumentStyleData* aStyleData, const nsACString& aValue,
    bool* aWasCurrentColor, css::Loader* aLoader) {
  StyleAbsoluteColor color{};
  if (!Servo_ComputeColor(aStyleData, &aValue, &color, aWasCurrentColor,
                          aLoader)) {
    return Nothing();
  }
  return Some(color);
}

/* static */
bool ServoCSSParser::ColorTo(const nsACString& aFromColor,
                             const nsACString& aToColorSpace,
                             nsACString* aResultColor,
                             nsTArray<float>* aResultComponents,
                             bool* aResultAdjusted, css::Loader* aLoader) {
  return Servo_ColorTo(&aFromColor, &aToColorSpace, aResultColor,
                       aResultComponents, aResultAdjusted, aLoader);
}

/* static */
already_AddRefed<StyleLockedDeclarationBlock> ServoCSSParser::ParseProperty(
    NonCustomCSSPropertyId aProperty, const nsACString& aValue,
    const ParsingEnvironment& aParsingEnvironment,
    const StyleParsingMode& aParsingMode) {
  CSSPropertyId property(aProperty);
  return ParseProperty(property, aValue, aParsingEnvironment, aParsingMode);
}

/* static */
already_AddRefed<StyleLockedDeclarationBlock> ServoCSSParser::ParseProperty(
    const CSSPropertyId& aProperty, const nsACString& aValue,
    const ParsingEnvironment& aParsingEnvironment,
    const StyleParsingMode& aParsingMode) {
  return Servo_ParseProperty(
             &aProperty, &aValue, aParsingEnvironment.mUrlExtraData,
             aParsingMode, aParsingEnvironment.mCompatMode,
             aParsingEnvironment.mLoader, aParsingEnvironment.mRuleType)
      .Consume();
}

/* static */
bool ServoCSSParser::ParseEasing(const nsACString& aValue,
                                 StyleComputedTimingFunction& aResult) {
  return Servo_ParseEasing(&aValue, &aResult);
}

/* static */
bool ServoCSSParser::ParseViewTimelineInset(const nsACString& aValue,
                                            StyleViewTimelineInset& aResult) {
  return Servo_ParseViewTimelineInset(&aValue, &aResult);
}

/* static */
bool ServoCSSParser::ParseLengthPercentageForAbsoluteLengths(
    const nsACString& aValue, StyleLengthPercentage& aResult) {
  return Servo_ParseLengthPercentageForAbsoluteLengths(&aValue, &aResult);
}

/* static */
bool ServoCSSParser::ParseTransformIntoMatrix(const nsACString& aValue,
                                              bool& aContains3DTransform,
                                              gfx::Matrix4x4& aResult) {
  return Servo_ParseTransformIntoMatrix(&aValue, &aContains3DTransform,
                                        &aResult.components);
}

/* static */
bool ServoCSSParser::ParseFontShorthandForMatching(
    const nsACString& aValue, URLExtraData* aUrl, StyleFontFamilyList& aList,
    StyleFontStyle& aStyle, StyleFontWidth& aWidth, StyleFontWeight& aWeight,
    float* aSize, bool* aSmallCaps) {
  return Servo_ParseFontShorthandForMatching(
      &aValue, aUrl, &aList, &aStyle, &aWidth, &aWeight, aSize, aSmallCaps);
}

/* static */
already_AddRefed<URLExtraData> ServoCSSParser::GetURLExtraData(
    Document* aDocument) {
  MOZ_ASSERT(aDocument);
  return do_AddRef(aDocument->DefaultStyleAttrURLData());
}

/* static */ ServoCSSParser::ParsingEnvironment
ServoCSSParser::GetParsingEnvironment(Document* aDocument) {
  return {
      GetURLExtraData(aDocument), aDocument->GetCompatibilityMode(),
      aDocument->GetExistingCSSLoader()};  // Loader for error reporting only.
}