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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 "core/css/parser/CSSParser.h"
#include "core/css/CSSColorValue.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/CSSPropertyParser.h"
#include "core/css/parser/CSSSelectorParser.h"
#include "core/css/parser/CSSSupportsParser.h"
#include "core/css/parser/CSSTokenizer.h"
#include "core/css/parser/CSSVariableParser.h"
#include "core/layout/LayoutTheme.h"
#include <memory>
namespace blink {
bool CSSParser::parseDeclarationList(const CSSParserContext* context,
MutableStylePropertySet* propertySet,
const String& declaration) {
return CSSParserImpl::parseDeclarationList(propertySet, declaration, context);
}
void CSSParser::parseDeclarationListForInspector(
const CSSParserContext* context,
const String& declaration,
CSSParserObserver& observer) {
CSSParserImpl::parseDeclarationListForInspector(declaration, context,
observer);
}
CSSSelectorList CSSParser::parseSelector(const CSSParserContext* context,
StyleSheetContents* styleSheetContents,
const String& selector) {
CSSTokenizer tokenizer(selector);
return CSSSelectorParser::parseSelector(tokenizer.tokenRange(), context,
styleSheetContents);
}
CSSSelectorList CSSParser::parsePageSelector(
const CSSParserContext* context,
StyleSheetContents* styleSheetContents,
const String& selector) {
CSSTokenizer tokenizer(selector);
return CSSParserImpl::parsePageSelector(tokenizer.tokenRange(),
styleSheetContents);
}
StyleRuleBase* CSSParser::parseRule(const CSSParserContext* context,
StyleSheetContents* styleSheet,
const String& rule) {
return CSSParserImpl::parseRule(rule, context, styleSheet,
CSSParserImpl::AllowImportRules);
}
void CSSParser::parseSheet(const CSSParserContext* context,
StyleSheetContents* styleSheet,
const String& text,
bool deferPropertyParsing) {
return CSSParserImpl::parseStyleSheet(text, context, styleSheet,
deferPropertyParsing);
}
void CSSParser::parseSheetForInspector(const CSSParserContext* context,
StyleSheetContents* styleSheet,
const String& text,
CSSParserObserver& observer) {
return CSSParserImpl::parseStyleSheetForInspector(text, context, styleSheet,
observer);
}
MutableStylePropertySet::SetResult CSSParser::parseValue(
MutableStylePropertySet* declaration,
CSSPropertyID unresolvedProperty,
const String& string,
bool important) {
return parseValue(declaration, unresolvedProperty, string, important,
static_cast<StyleSheetContents*>(nullptr));
}
MutableStylePropertySet::SetResult CSSParser::parseValue(
MutableStylePropertySet* declaration,
CSSPropertyID unresolvedProperty,
const String& string,
bool important,
StyleSheetContents* styleSheet) {
if (string.isEmpty()) {
bool didParse = false;
bool didChange = false;
return MutableStylePropertySet::SetResult{didParse, didChange};
}
CSSPropertyID resolvedProperty = resolveCSSPropertyID(unresolvedProperty);
CSSParserMode parserMode = declaration->cssParserMode();
CSSValue* value =
CSSParserFastPaths::maybeParseValue(resolvedProperty, string, parserMode);
if (value) {
bool didParse = true;
bool didChange = declaration->setProperty(
CSSProperty(resolvedProperty, *value, important));
return MutableStylePropertySet::SetResult{didParse, didChange};
}
CSSParserContext* context;
if (styleSheet) {
context = CSSParserContext::create(styleSheet->parserContext(), nullptr);
context->setMode(parserMode);
} else {
context = CSSParserContext::create(parserMode);
}
return parseValue(declaration, unresolvedProperty, string, important,
context);
}
MutableStylePropertySet::SetResult CSSParser::parseValueForCustomProperty(
MutableStylePropertySet* declaration,
const AtomicString& propertyName,
const PropertyRegistry* registry,
const String& value,
bool important,
StyleSheetContents* styleSheet,
bool isAnimationTainted) {
DCHECK(CSSVariableParser::isValidVariableName(propertyName));
if (value.isEmpty()) {
bool didParse = false;
bool didChange = false;
return MutableStylePropertySet::SetResult{didParse, didChange};
}
CSSParserMode parserMode = declaration->cssParserMode();
CSSParserContext* context;
if (styleSheet) {
context = CSSParserContext::create(styleSheet->parserContext(), nullptr);
context->setMode(parserMode);
} else {
context = CSSParserContext::create(parserMode);
}
return CSSParserImpl::parseVariableValue(declaration, propertyName, registry,
value, important, context,
isAnimationTainted);
}
ImmutableStylePropertySet* CSSParser::parseCustomPropertySet(
CSSParserTokenRange range) {
return CSSParserImpl::parseCustomPropertySet(range);
}
MutableStylePropertySet::SetResult CSSParser::parseValue(
MutableStylePropertySet* declaration,
CSSPropertyID unresolvedProperty,
const String& string,
bool important,
const CSSParserContext* context) {
return CSSParserImpl::parseValue(declaration, unresolvedProperty, string,
important, context);
}
const CSSValue* CSSParser::parseSingleValue(CSSPropertyID propertyID,
const String& string,
const CSSParserContext* context) {
if (string.isEmpty())
return nullptr;
if (CSSValue* value = CSSParserFastPaths::maybeParseValue(propertyID, string,
context->mode()))
return value;
CSSTokenizer tokenizer(string);
return CSSPropertyParser::parseSingleValue(propertyID, tokenizer.tokenRange(),
context);
}
ImmutableStylePropertySet* CSSParser::parseInlineStyleDeclaration(
const String& styleString,
Element* element) {
return CSSParserImpl::parseInlineStyleDeclaration(styleString, element);
}
std::unique_ptr<Vector<double>> CSSParser::parseKeyframeKeyList(
const String& keyList) {
return CSSParserImpl::parseKeyframeKeyList(keyList);
}
StyleRuleKeyframe* CSSParser::parseKeyframeRule(const CSSParserContext* context,
const String& rule) {
StyleRuleBase* keyframe = CSSParserImpl::parseRule(
rule, context, nullptr, CSSParserImpl::KeyframeRules);
return toStyleRuleKeyframe(keyframe);
}
bool CSSParser::parseSupportsCondition(const String& condition) {
CSSTokenizer tokenizer(condition);
CSSParserImpl parser(strictCSSParserContext());
return CSSSupportsParser::supportsCondition(tokenizer.tokenRange(), parser) ==
CSSSupportsParser::Supported;
}
bool CSSParser::parseColor(Color& color, const String& string, bool strict) {
if (string.isEmpty())
return false;
// The regular color parsers don't resolve named colors, so explicitly
// handle these first.
Color namedColor;
if (namedColor.setNamedColor(string)) {
color = namedColor;
return true;
}
const CSSValue* value = CSSParserFastPaths::parseColor(
string, strict ? HTMLStandardMode : HTMLQuirksMode);
// TODO(timloh): Why is this always strict mode?
if (!value)
value =
parseSingleValue(CSSPropertyColor, string, strictCSSParserContext());
if (!value || !value->isColorValue())
return false;
color = toCSSColorValue(*value).value();
return true;
}
bool CSSParser::parseSystemColor(Color& color, const String& colorString) {
CSSValueID id = cssValueKeywordID(colorString);
if (!StyleColor::isSystemColor(id))
return false;
color = LayoutTheme::theme().systemColor(id);
return true;
}
const CSSValue* CSSParser::parseFontFaceDescriptor(
CSSPropertyID propertyID,
const String& propertyValue,
const CSSParserContext* context) {
StringBuilder builder;
builder.append("@font-face { ");
builder.append(getPropertyNameString(propertyID));
builder.append(" : ");
builder.append(propertyValue);
builder.append("; }");
StyleRuleBase* rule = parseRule(context, nullptr, builder.toString());
if (!rule || !rule->isFontFaceRule())
return nullptr;
return toStyleRuleFontFace(rule)->properties().getPropertyCSSValue(
propertyID);
}
} // namespace blink
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