Move clip property into CSSPropertyParser

third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp

 // Copyright 2015 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/CSSPropertyParser.h"
 
 #include "core/StylePropertyShorthand.h"
 #include "core/css/CSSCalculationValue.h"
 #include "core/css/CSSCustomIdentValue.h"
 #include "core/css/CSSFontFaceSrcValue.h"
 #include "core/css/CSSFontFeatureValue.h"
 #include "core/css/CSSPrimitiveValueMappings.h"
+#include "core/css/CSSQuadValue.h"
 #include "core/css/CSSStringValue.h"
 #include "core/css/CSSURIValue.h"
 #include "core/css/CSSUnicodeRangeValue.h"
 #include "core/css/CSSValuePair.h"
 #include "core/css/CSSValuePool.h"
 #include "core/css/FontFace.h"
 #include "core/css/parser/CSSParserFastPaths.h"
 #include "core/css/parser/CSSParserValues.h"
 #include "core/frame/UseCounter.h"
 #include "core/layout/LayoutTheme.h"
@@ skipping 770 matching lines @@
     return consumeLengthOrPercent(range, context.mode(), ValueRangeNonNegative, unitless);
 }
 
 static PassRefPtrWillBeRawPtr<CSSValue> consumeWidthOrHeight(CSSParserTokenRange& range, const CSSParserContext& context, UnitlessQuirk unitless = UnitlessQuirk::Forbid)
 {
     if (range.peek().id() == CSSValueAuto || validWidthOrHeightKeyword(range.peek().id(), context))
         return consumeIdent(range);
     return consumeLengthOrPercent(range, context.mode(), ValueRangeNonNegative, unitless);
 }
 
+static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> consumeClipComponent(CSSParserTokenRange& range, CSSParserMode cssParserMode)
+{
+    if (range.peek().id() == CSSValueAuto)
+        return consumeIdent(range);
+    return consumeLength(range, cssParserMode, ValueRangeAll, UnitlessQuirk::Allow);
+}
+
+static PassRefPtrWillBeRawPtr<CSSValue> consumeClip(CSSParserTokenRange& range, CSSParserMode cssParserMode)
+{
+    if (range.peek().id() == CSSValueAuto)
+        return consumeIdent(range);
+
+    if (range.peek().functionId() != CSSValueRect)
+        return nullptr;
+
+    CSSParserTokenRange args = consumeFunction(range);
+    // rect(t, r, b, l) || rect(t r b l)
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> top = consumeClipComponent(args, cssParserMode);
+    if (!top)
+        return nullptr;
+    bool needsComma = consumeCommaIncludingWhitespace(args);
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> right = consumeClipComponent(args, cssParserMode);
+    if (!right || (needsComma && !consumeCommaIncludingWhitespace(args)))
+        return nullptr;
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> bottom = consumeClipComponent(args, cssParserMode);
+    if (!bottom || (needsComma && !consumeCommaIncludingWhitespace(args)))
+        return nullptr;
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> left = consumeClipComponent(args, cssParserMode);
+    if (!left || !args.atEnd())
+        return nullptr;
+    return CSSQuadValue::create(top.release(), right.release(), bottom.release(), left.release(), CSSQuadValue::SerializeAsRect);
+}
+
 PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseSingleValue(CSSPropertyID propId)
 {
     m_range.consumeWhitespace();
     switch (propId) {
     case CSSPropertyWillChange:
         return consumeWillChange(m_range);
     case CSSPropertyPage:
         return consumePage(m_range);
     case CSSPropertyQuotes:
         return consumeQuotes(m_range);
@@ skipping 39 matching lines @@
     case CSSPropertyMinWidth:
     case CSSPropertyMinHeight:
     case CSSPropertyWidth:
     case CSSPropertyHeight:
         return consumeWidthOrHeight(m_range, m_context, UnitlessQuirk::Allow);
     case CSSPropertyWebkitMinLogicalWidth:
     case CSSPropertyWebkitMinLogicalHeight:
     case CSSPropertyWebkitLogicalWidth:
     case CSSPropertyWebkitLogicalHeight:
         return consumeWidthOrHeight(m_range, m_context);
+    case CSSPropertyClip:
+        return consumeClip(m_range, m_context.mode());
     default:
         return nullptr;
     }
 }
 
 static PassRefPtrWillBeRawPtr<CSSValueList> consumeFontFaceUnicodeRange(CSSParserTokenRange& range)
 {
     RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
 
     do {
@@ skipping 374 matching lines @@
     }
     case CSSPropertyBorderSpacing:
         return consumeBorderSpacing(important);
     default:
         m_currentShorthand = oldShorthand;
         return false;
     }
 }
 
 } // namespace blink