Move the grid shorthand into CSSPropertyParser

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

-/*
- * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
- * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
- * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
- * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
- * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
- * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
- * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
- * Copyright (C) 2012 Intel Corporation. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "core/css/parser/CSSPropertyParser.h"
-
-#include "core/StylePropertyShorthand.h"
-#include "core/css/CSSCustomIdentValue.h"
-#include "core/css/CSSFunctionValue.h"
-#include "core/css/CSSGridAutoRepeatValue.h"
-#include "core/css/CSSGridLineNamesValue.h"
-#include "core/css/CSSPrimitiveValueMappings.h"
-#include "core/css/CSSValuePair.h"
-#include "core/css/CSSValuePool.h"
-#include "core/css/parser/CSSParserValues.h"
-#include "core/css/parser/CSSPropertyParserHelpers.h"
-#include "core/style/GridArea.h"
-#include "platform/RuntimeEnabledFeatures.h"
-
-namespace blink {
-
-using namespace CSSPropertyParserHelpers;
-
-void CSSPropertyParser::addProperty(CSSPropertyID propId, CSSValue* value, bool important, bool implicit)
-{
-    ASSERT(!isPropertyAlias(propId));
-
-    int shorthandIndex = 0;
-    bool setFromShorthand = false;
-
-    if (m_currentShorthand) {
-        Vector<StylePropertyShorthand, 4> shorthands;
-        getMatchingShorthandsForLonghand(propId, &shorthands);
-        setFromShorthand = true;
-        if (shorthands.size() > 1)
-            shorthandIndex = indexOfShorthandForLonghand(m_currentShorthand, shorthands);
-    }
-
-    m_parsedProperties->append(CSSProperty(propId, value, important, setFromShorthand, shorthandIndex, implicit));
-}
-
-void CSSPropertyParser::addExpandedPropertyForValue(CSSPropertyID propId, CSSValue* value, bool important)
-{
-    const StylePropertyShorthand& shorthand = shorthandForProperty(propId);
-    unsigned shorthandLength = shorthand.length();
-    if (!shorthandLength) {
-        addProperty(propId, value, important);
-        return;
-    }
-
-    ShorthandScope scope(this, propId);
-    const CSSPropertyID* longhands = shorthand.properties();
-    for (unsigned i = 0; i < shorthandLength; ++i)
-        addProperty(longhands[i], value, important);
-}
-
-bool CSSPropertyParser::legacyParseShorthand(CSSPropertyID propertyID, bool important)
-{
-    switch (propertyID) {
-    case CSSPropertyGrid:
-        ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
-        return parseGridShorthand(important);
-
-    // The remaining shorthands are handled in CSSPropertyParser.cpp
-    default:
-        return false;
-    }
-}
-
-bool CSSPropertyParser::parseGridShorthand(bool important)
-{
-    ShorthandScope scope(this, CSSPropertyGrid);
-    ASSERT(shorthandForProperty(CSSPropertyGrid).length() == 8);
-
-    CSSParserTokenRange rangeCopy = m_range;
-
-    // 1- <grid-template>
-    if (consumeGridTemplateShorthand(important)) {
-        // It can only be specified the explicit or the implicit grid properties in a single grid declaration.
-        // The sub-properties not specified are set to their initial value, as normal for shorthands.
-        addProperty(CSSPropertyGridAutoFlow, cssValuePool().createImplicitInitialValue(), important);
-        addProperty(CSSPropertyGridAutoColumns, cssValuePool().createImplicitInitialValue(), important);
-        addProperty(CSSPropertyGridAutoRows, cssValuePool().createImplicitInitialValue(), important);
-        addProperty(CSSPropertyGridColumnGap, cssValuePool().createImplicitInitialValue(), important);
-        addProperty(CSSPropertyGridRowGap, cssValuePool().createImplicitInitialValue(), important);
-        return true;
-    }
-
-    m_range = rangeCopy;
-
-    // 2- <grid-auto-flow> [ <grid-auto-rows> [ / <grid-auto-columns> ]? ]
-    CSSValueList* gridAutoFlow = consumeGridAutoFlow(m_range);
-    if (!gridAutoFlow)
-        return false;
-
-    CSSValue* autoColumnsValue = nullptr;
-    CSSValue* autoRowsValue = nullptr;
-
-    if (!m_range.atEnd()) {
-        autoRowsValue = consumeGridTrackSize(m_range, m_context.mode());
-        if (!autoRowsValue)
-            return false;
-        if (consumeSlashIncludingWhitespace(m_range)) {
-            autoColumnsValue = consumeGridTrackSize(m_range, m_context.mode());
-            if (!autoColumnsValue)
-                return false;
-        }
-        if (!m_range.atEnd())
-            return false;
-    } else {
-        // Other omitted values are set to their initial values.
-        autoColumnsValue = cssValuePool().createImplicitInitialValue();
-        autoRowsValue = cssValuePool().createImplicitInitialValue();
-    }
-
-    // if <grid-auto-columns> value is omitted, it is set to the value specified for grid-auto-rows.
-    if (!autoColumnsValue)
-        autoColumnsValue = autoRowsValue;
-
-    addProperty(CSSPropertyGridAutoFlow, gridAutoFlow, important);
-    addProperty(CSSPropertyGridAutoColumns, autoColumnsValue, important);
-    addProperty(CSSPropertyGridAutoRows, autoRowsValue, important);
-
-    // It can only be specified the explicit or the implicit grid properties in a single grid declaration.
-    // The sub-properties not specified are set to their initial value, as normal for shorthands.
-    addProperty(CSSPropertyGridTemplateColumns, cssValuePool().createImplicitInitialValue(), important);
-    addProperty(CSSPropertyGridTemplateRows, cssValuePool().createImplicitInitialValue(), important);
-    addProperty(CSSPropertyGridTemplateAreas, cssValuePool().createImplicitInitialValue(), important);
-    addProperty(CSSPropertyGridColumnGap, cssValuePool().createImplicitInitialValue(), important);
-    addProperty(CSSPropertyGridRowGap, cssValuePool().createImplicitInitialValue(), important);
-
-    return true;
-}
-
-bool allTracksAreFixedSized(CSSValueList& valueList)
-{
-    for (auto value : valueList) {
-        if (value->isGridLineNamesValue())
-            continue;
-        // The auto-repeat value holds a <fixed-size> = <fixed-breadth> | minmax( <fixed-breadth>, <track-breadth> )
-        if (value->isGridAutoRepeatValue()) {
-            if (!allTracksAreFixedSized(toCSSValueList(*value)))
-                return false;
-            continue;
-        }
-        ASSERT(value->isPrimitiveValue() || (value->isFunctionValue() && toCSSFunctionValue(*value).item(0)));
-        const CSSPrimitiveValue& primitiveValue = value->isPrimitiveValue()
-            ? toCSSPrimitiveValue(*value)
-            : toCSSPrimitiveValue(*toCSSFunctionValue(*value).item(0));
-        CSSValueID valueID = primitiveValue.getValueID();
-        if (valueID == CSSValueMinContent || valueID == CSSValueMaxContent || valueID == CSSValueAuto || primitiveValue.isFlex())
-            return false;
-    }
-    return true;
-}
-
-static Vector<String> parseGridTemplateAreasColumnNames(const String& gridRowNames)
-{
-    ASSERT(!gridRowNames.isEmpty());
-    Vector<String> columnNames;
-    // Using StringImpl to avoid checks and indirection in every call to String::operator[].
-    StringImpl& text = *gridRowNames.impl();
-
-    StringBuilder areaName;
-    for (unsigned i = 0; i < text.length(); ++i) {
-        if (text[i] == ' ') {
-            if (!areaName.isEmpty()) {
-                columnNames.append(areaName.toString());
-                areaName.clear();
-            }
-            continue;
-        }
-        if (text[i] == '.') {
-            if (areaName == ".")
-                continue;
-            if (!areaName.isEmpty()) {
-                columnNames.append(areaName.toString());
-                areaName.clear();
-            }
-        } else {
-            if (areaName == ".") {
-                columnNames.append(areaName.toString());
-                areaName.clear();
-            }
-        }
-
-        areaName.append(text[i]);
-    }
-
-    if (!areaName.isEmpty())
-        columnNames.append(areaName.toString());
-
-    return columnNames;
-}
-
-bool parseGridTemplateAreasRow(const String& gridRowNames, NamedGridAreaMap& gridAreaMap, const size_t rowCount, size_t& columnCount)
-{
-    if (gridRowNames.isEmpty() || gridRowNames.containsOnlyWhitespace())
-        return false;
-
-    Vector<String> columnNames = parseGridTemplateAreasColumnNames(gridRowNames);
-    if (!columnCount) {
-        columnCount = columnNames.size();
-        ASSERT(columnCount);
-    } else if (columnCount != columnNames.size()) {
-        // The declaration is invalid is all the rows don't have the number of columns.
-        return false;
-    }
-
-    for (size_t currentCol = 0; currentCol < columnCount; ++currentCol) {
-        const String& gridAreaName = columnNames[currentCol];
-
-        // Unamed areas are always valid (we consider them to be 1x1).
-        if (gridAreaName == ".")
-            continue;
-
-        // We handle several grid areas with the same name at once to simplify the validation code.
-        size_t lookAheadCol;
-        for (lookAheadCol = currentCol + 1; lookAheadCol < columnCount; ++lookAheadCol) {
-            if (columnNames[lookAheadCol] != gridAreaName)
-                break;
-        }
-
-        NamedGridAreaMap::iterator gridAreaIt = gridAreaMap.find(gridAreaName);
-        if (gridAreaIt == gridAreaMap.end()) {
-            gridAreaMap.add(gridAreaName, GridArea(GridSpan::translatedDefiniteGridSpan(rowCount, rowCount + 1), GridSpan::translatedDefiniteGridSpan(currentCol, lookAheadCol)));
-        } else {
-            GridArea& gridArea = gridAreaIt->value;
-
-            // The following checks test that the grid area is a single filled-in rectangle.
-            // 1. The new row is adjacent to the previously parsed row.
-            if (rowCount != gridArea.rows.endLine())
-                return false;
-
-            // 2. The new area starts at the same position as the previously parsed area.
-            if (currentCol != gridArea.columns.startLine())
-                return false;
-
-            // 3. The new area ends at the same position as the previously parsed area.
-            if (lookAheadCol != gridArea.columns.endLine())
-                return false;
-
-            gridArea.rows = GridSpan::translatedDefiniteGridSpan(gridArea.rows.startLine(), gridArea.rows.endLine() + 1);
-        }
-        currentCol = lookAheadCol - 1;
-    }
-
-    return true;
-}
-
-} // namespace blink