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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "core/css/parser/CSSParser.h"
#include "core/css/CSSKeyframeRule.h"
#include "core/css/StyleColor.h"
#include "core/css/StyleRule.h"
#include "core/css/StyleSheetContents.h"
#include "core/css/parser/CSSParserFastPaths.h"
#include "core/css/parser/CSSParserImpl.h"
#include "core/css/parser/CSSSelectorParser.h"
#include "core/css/parser/CSSSupportsParser.h"
#include "core/css/parser/CSSTokenizer.h"
#include "core/layout/LayoutTheme.h"
namespace blink {
bool CSSParser::parseDeclarationList(const CSSParserContext& context, MutableStylePropertySet* propertySet, const String& declaration, CSSParserObserver* observer, StyleSheetContents* styleSheet)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled()) {
if (observer) {
CSSParserImpl::parseDeclarationListForInspector(declaration, context, *observer);
return true;
}
return CSSParserImpl::parseDeclarationList(propertySet, declaration, context);
}
return BisonCSSParser(context).parseDeclaration(propertySet, declaration, observer, styleSheet);
}
void CSSParser::parseSelector(const CSSParserContext& context, const String& selector, CSSSelectorList& selectorList)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled()) {
CSSTokenizer::Scope scope(selector);
CSSSelectorParser::parseSelector(scope.tokenRange(), context, starAtom, nullptr, selectorList);
return;
}
BisonCSSParser(context).parseSelector(selector, selectorList);
}
PassRefPtrWillBeRawPtr<StyleRuleBase> CSSParser::parseRule(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& rule)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled())
return CSSParserImpl::parseRule(rule, context, CSSParserImpl::AllowImportRules);
return BisonCSSParser(context).parseRule(styleSheet, rule);
}
void CSSParser::parseSheet(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& text, const TextPosition& startPosition, CSSParserObserver* observer, bool logErrors)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled()) {
if (observer)
return CSSParserImpl::parseStyleSheetForInspector(text, context, *observer);
return CSSParserImpl::parseStyleSheet(text, context, styleSheet);
}
BisonCSSParser(context).parseSheet(styleSheet, text, startPosition, observer, logErrors);
}
bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID unresolvedProperty, const String& string, bool important, CSSParserMode parserMode, StyleSheetContents* styleSheet)
{
if (string.isEmpty())
return false;
CSSPropertyID resolvedProperty = resolveCSSPropertyID(unresolvedProperty);
RefPtrWillBeRawPtr<CSSValue> value = CSSParserFastPaths::maybeParseValue(resolvedProperty, string, parserMode);
if (value)
return declaration->setProperty(CSSProperty(resolvedProperty, value.release(), important));
CSSParserContext context(parserMode, 0);
if (styleSheet) {
context = styleSheet->parserContext();
context.setMode(parserMode);
}
return parseValue(declaration, unresolvedProperty, string, important, context);
}
bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID unresolvedProperty, const String& string, bool important, const CSSParserContext& context)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled())
return CSSParserImpl::parseValue(declaration, unresolvedProperty, string, important, context);
return BisonCSSParser::parseValue(declaration, unresolvedProperty, string, important, context);
}
PassRefPtrWillBeRawPtr<CSSValue> CSSParser::parseSingleValue(CSSPropertyID propertyID, const String& string, const CSSParserContext& context)
{
if (string.isEmpty())
return nullptr;
if (RefPtrWillBeRawPtr<CSSValue> value = CSSParserFastPaths::maybeParseValue(propertyID, string, context.mode()))
return value;
RefPtrWillBeRawPtr<MutableStylePropertySet> stylePropertySet = MutableStylePropertySet::create();
bool changed = parseValue(stylePropertySet.get(), propertyID, string, false, context);
ASSERT_UNUSED(changed, changed == stylePropertySet->hasProperty(propertyID));
return stylePropertySet->getPropertyCSSValue(propertyID);
}
PassRefPtrWillBeRawPtr<ImmutableStylePropertySet> CSSParser::parseInlineStyleDeclaration(const String& styleString, Element* element)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled())
return CSSParserImpl::parseInlineStyleDeclaration(styleString, element);
return BisonCSSParser::parseInlineStyleDeclaration(styleString, element);
}
PassOwnPtr<Vector<double>> CSSParser::parseKeyframeKeyList(const String& keyList)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled())
return CSSParserImpl::parseKeyframeKeyList(keyList);
return BisonCSSParser(strictCSSParserContext()).parseKeyframeKeyList(keyList);
}
PassRefPtrWillBeRawPtr<StyleRuleKeyframe> CSSParser::parseKeyframeRule(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& rule)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled()) {
RefPtrWillBeRawPtr<StyleRuleBase> keyframe = CSSParserImpl::parseRule(rule, context, CSSParserImpl::KeyframeRules);
return toStyleRuleKeyframe(keyframe.get());
}
return BisonCSSParser(context).parseKeyframeRule(styleSheet, rule);
}
bool CSSParser::parseSupportsCondition(const String& condition)
{
if (RuntimeEnabledFeatures::newCSSParserEnabled()) {
CSSTokenizer::Scope scope(condition);
CSSParserImpl parser(strictCSSParserContext());
return CSSSupportsParser::supportsCondition(scope.tokenRange(), parser) == CSSSupportsParser::Supported;
}
return BisonCSSParser(CSSParserContext(HTMLStandardMode, 0)).parseSupportsCondition(condition);
}
bool CSSParser::parseColor(RGBA32& color, const String& string, bool strict)
{
if (string.isEmpty())
return false;
// First try creating a color specified by name, rgba(), rgb() or "#" syntax.
if (CSSPropertyParser::fastParseColor(color, string, strict))
return true;
// In case the fast-path parser didn't understand the color, try the full parser.
RefPtrWillBeRawPtr<MutableStylePropertySet> stylePropertySet = MutableStylePropertySet::create();
// FIXME: The old CSS parser is only working in strict mode ignoring the strict parameter.
// It needs to be investigated why.
if (!parseValue(stylePropertySet.get(), CSSPropertyColor, string, false, strictCSSParserContext()))
return false;
RefPtrWillBeRawPtr<CSSValue> value = stylePropertySet->getPropertyCSSValue(CSSPropertyColor);
if (!value || !value->isPrimitiveValue())
return false;
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value.get());
if (!primitiveValue->isRGBColor())
return false;
color = primitiveValue->getRGBA32Value();
return true;
}
StyleColor CSSParser::colorFromRGBColorString(const String& string)
{
// FIXME: Rework css parser so it is more SVG aware.
RGBA32 color;
if (parseColor(color, string.stripWhiteSpace()))
return StyleColor(color);
// FIXME: This branch catches the string currentColor, but we should error if we have an illegal color value.
return StyleColor::currentColor();
}
bool CSSParser::parseSystemColor(RGBA32& color, const String& colorString)
{
CSSParserString cssColor;
cssColor.init(colorString);
CSSValueID id = cssValueKeywordID(cssColor);
if (!CSSPropertyParser::isSystemColor(id))
return false;
Color parsedColor = LayoutTheme::theme().systemColor(id);
color = parsedColor.rgb();
return true;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSParser::parseFontFaceDescriptor(CSSPropertyID propertyID, const String& propertyValue, const CSSParserContext& context)
{
StringBuilder builder;
builder.appendLiteral("@font-face { ");
builder.append(getPropertyNameString(propertyID));
builder.appendLiteral(" : ");
builder.append(propertyValue);
builder.appendLiteral("; }");
RefPtrWillBeRawPtr<StyleRuleBase> rule = parseRule(context, 0, builder.toString());
if (!rule || !rule->isFontFaceRule())
return nullptr;
return toStyleRuleFontFace(rule.get())->properties().getPropertyCSSValue(propertyID);
}
} // namespace blink
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