@Nonnull
private ICSSExpressionMember _createExpressionTerm(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.EXPRTERM);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount > 1)
_throwUnexpectedChildrenCount(aNode, "Expected 0 or 1 children but got " + nChildCount + "!");
// Simple value
if (nChildCount == 0) {
final CSSExpressionMemberTermSimple ret = new CSSExpressionMemberTermSimple(aNode.getText());
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
final CSSNode aChildNode = aNode.jjtGetChild(0);
if (ECSSNodeType.URL.isNode(aChildNode, m_eVersion)) {
// URI value
return _createExpressionURL(aChildNode);
} else if (ECSSNodeType.FUNCTION.isNode(aChildNode, m_eVersion)) {
// function value
return _createExpressionFunction(aChildNode);
} else if (ECSSNodeType.MATH.isNode(aChildNode, m_eVersion)) {
// Math value
return _createExpressionMathTerm(aChildNode);
} else
throw new IllegalStateException(
"Expected an expression term but got "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
@Nonnull
private CSSExpressionMemberMath _createExpressionMathTerm(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.MATH);
final CSSExpressionMemberMath ret = new CSSExpressionMemberMath();
ret.setSourceLocation(aNode.getSourceLocation());
// read all sums
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.MATHPRODUCT.isNode(aChildNode, m_eVersion)) {
ret.addMember(_createExpressionMathProduct(aChildNode));
} else if (ECSSNodeType.MATHSUMOPERATOR.isNode(aChildNode, m_eVersion)) {
final String sText = aChildNode.getText();
final ECSSMathOperator eMathOp = ECSSMathOperator.getFromNameOrNull(sText);
if (eMathOp == null) s_aLogger.error("Failed to parse math operator '" + sText + "'");
else ret.addMember(eMathOp);
} else
s_aLogger.error(
"Unsupported child of "
+ ECSSNodeType.getNodeName(aNode, m_eVersion)
+ ": "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
private CSSStyleRule _createStyleRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.STYLERULE);
final CSSStyleRule ret = new CSSStyleRule();
ret.setSourceLocation(aNode.getSourceLocation());
boolean bSelectors = true;
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.SELECTOR.isNode(aChildNode, m_eVersion)) {
if (!bSelectors) s_aLogger.error("Found a selector after a declaration!");
ret.addSelector(_createSelector(aChildNode));
} else {
// OK, we're after the selectors
bSelectors = false;
if (ECSSNodeType.STYLEDECLARATIONLIST.isNode(aChildNode, m_eVersion)) {
// Read all contained declarations
final int nDecls = aChildNode.jjtGetNumChildren();
for (int nDecl = 0; nDecl < nDecls; ++nDecl) {
final CSSNode aChildChildNode = aChildNode.jjtGetChild(nDecl);
if (!ECSSNodeType.isErrorNode(aChildChildNode, m_eVersion)) {
final CSSDeclaration aDeclaration = _createDeclaration(aChildChildNode);
if (aDeclaration != null) ret.addDeclaration(aDeclaration);
}
}
} else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported child of "
+ ECSSNodeType.getNodeName(aNode, m_eVersion)
+ ": "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
}
return ret;
}
private static void _throwUnexpectedChildrenCount(
@Nonnull final CSSNode aNode, @Nonnull @Nonempty final String sMsg) {
s_aLogger.error(sMsg);
for (int i = 0; i < aNode.jjtGetNumChildren(); ++i)
s_aLogger.error(" " + aNode.jjtGetChild(i));
throw new CSSHandlingException(aNode, sMsg);
}
@Nonnull
@SuppressFBWarnings("IL_INFINITE_LOOP")
private CSSPageRule _createPageRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.PAGERULE);
final int nChildCount = aNode.jjtGetNumChildren();
String sPseudoPage = null;
int nStartIndex = 0;
if (nChildCount > 0) {
final CSSNode aFirstChild = aNode.jjtGetChild(0);
if (ECSSNodeType.PSEUDOPAGE.isNode(aFirstChild, m_eVersion)) {
sPseudoPage = aFirstChild.getText();
nStartIndex++;
}
}
final CSSPageRule ret = new CSSPageRule(sPseudoPage);
ret.setSourceLocation(aNode.getSourceLocation());
for (int nIndex = nStartIndex; nIndex < nChildCount; ++nIndex) {
final CSSNode aChildNode = aNode.jjtGetChild(nIndex);
if (ECSSNodeType.STYLEDECLARATIONLIST.isNode(aChildNode, m_eVersion)) {
// Read all contained declarations
final int nDecls = aChildNode.jjtGetNumChildren();
for (int nDecl = 0; nDecl < nDecls; ++nDecl) {
final CSSDeclaration aDeclaration = _createDeclaration(aChildNode.jjtGetChild(nDecl));
if (aDeclaration != null) ret.addDeclaration(aDeclaration);
}
} else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported page rule child: " + ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
public CSSDeclarationList createDeclarationListFromNode(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.STYLEDECLARATIONLIST);
final CSSDeclarationList ret = new CSSDeclarationList();
ret.setSourceLocation(aNode.getSourceLocation());
final int nDecls = aNode.jjtGetNumChildren();
for (int nDecl = 0; nDecl < nDecls; ++nDecl) {
final CSSDeclaration aDeclaration = _createDeclaration(aNode.jjtGetChild(nDecl));
if (aDeclaration != null) ret.addDeclaration(aDeclaration);
}
return ret;
}
@Nonnull
private CSSExpressionMemberTermURI _createExpressionURL(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.URL);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount > 0)
_throwUnexpectedChildrenCount(aNode, "Expected 0 children but got " + nChildCount + "!");
final CSSURI aURI = new CSSURI(aNode.getText());
aURI.setSourceLocation(aNode.getSourceLocation());
return new CSSExpressionMemberTermURI(aURI);
}
@Nonnull
private CSSMediaRule _createMediaRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.MEDIARULE);
final CSSMediaRule ret = new CSSMediaRule();
ret.setSourceLocation(aNode.getSourceLocation());
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.MEDIALIST.isNode(aChildNode, m_eVersion)) {
for (final CSSNode aMediaListChildNode : aChildNode)
ret.addMediaQuery(_createMediaQuery(aMediaListChildNode));
} else if (ECSSNodeType.STYLERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createStyleRule(aChildNode));
else if (ECSSNodeType.MEDIARULE.isNode(aChildNode, m_eVersion)) {
// Nested media rules are OK!
ret.addRule(_createMediaRule(aChildNode));
} else if (ECSSNodeType.PAGERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createPageRule(aChildNode));
else if (ECSSNodeType.FONTFACERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createFontFaceRule(aChildNode));
else if (ECSSNodeType.KEYFRAMESRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createKeyframesRule(aChildNode));
else if (ECSSNodeType.VIEWPORTRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createViewportRule(aChildNode));
else if (ECSSNodeType.SUPPORTSRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createSupportsRule(aChildNode));
else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported media-rule child: " + ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
private CSSSupportsRule _createSupportsRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.SUPPORTSRULE);
final CSSSupportsRule ret = new CSSSupportsRule();
ret.setSourceLocation(aNode.getSourceLocation());
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.SUPPORTSCONDITION.isNode(aChildNode, m_eVersion)) {
for (final CSSNode aChildChildNode : aChildNode) {
final ICSSSupportsConditionMember aMember =
_createSupportsConditionMemberRecursive(aChildChildNode);
if (aMember != null) ret.addSupportConditionMember(aMember);
}
} else if (ECSSNodeType.STYLERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createStyleRule(aChildNode));
else if (ECSSNodeType.MEDIARULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createMediaRule(aChildNode));
else if (ECSSNodeType.PAGERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createPageRule(aChildNode));
else if (ECSSNodeType.FONTFACERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createFontFaceRule(aChildNode));
else if (ECSSNodeType.KEYFRAMESRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createKeyframesRule(aChildNode));
else if (ECSSNodeType.VIEWPORTRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createViewportRule(aChildNode));
else if (ECSSNodeType.SUPPORTSRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createSupportsRule(aChildNode));
else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported supports-rule child: " + ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
private CSSSelector _createSelector(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.SELECTOR);
final CSSSelector ret = new CSSSelector();
ret.setSourceLocation(aNode.getSourceLocation());
for (final CSSNode aChildNode : aNode) {
final ICSSSelectorMember aMember = _createSelectorMember(aChildNode);
if (aMember != null) ret.addMember(aMember);
}
return ret;
}
@Nonnull
private CSSFontFaceRule _createFontFaceRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.FONTFACERULE);
final CSSFontFaceRule ret = new CSSFontFaceRule();
ret.setSourceLocation(aNode.getSourceLocation());
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.STYLEDECLARATIONLIST.isNode(aChildNode, m_eVersion)) {
// Read all contained declarations
final int nDecls = aChildNode.jjtGetNumChildren();
for (int nDecl = 0; nDecl < nDecls; ++nDecl) {
final CSSDeclaration aDeclaration = _createDeclaration(aChildNode.jjtGetChild(nDecl));
if (aDeclaration != null) ret.addDeclaration(aDeclaration);
}
} else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported font-face rule child: "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
private CSSMediaExpression _createMediaExpr(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.MEDIAEXPR);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount != 1 && nChildCount != 2)
_throwUnexpectedChildrenCount(aNode, "Expected 1 or 2 children but got " + nChildCount + "!");
final CSSNode aFeatureNode = aNode.jjtGetChild(0);
if (!ECSSNodeType.MEDIAFEATURE.isNode(aFeatureNode, m_eVersion))
throw new IllegalStateException(
"Expected a media feature but got " + ECSSNodeType.getNodeName(aFeatureNode, m_eVersion));
final String sFeature = aFeatureNode.getText();
if (ECSSMediaExpressionFeature.getFromNameOrNull(sFeature) == null)
s_aLogger.warn("Media expression uses unknown feature '" + sFeature + "'");
CSSMediaExpression ret;
if (nChildCount == 1) {
// Feature only
ret = new CSSMediaExpression(sFeature);
} else {
// Feature + value
final CSSNode aValueNode = aNode.jjtGetChild(1);
ret = new CSSMediaExpression(sFeature, _createExpression(aValueNode));
}
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
@Nonnull
private CSSImportRule _createImportRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.IMPORTRULE);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount > 2)
_throwUnexpectedChildrenCount(
aNode, "Expected at last 2 children but got " + nChildCount + "!");
CSSURI aImportURI = null;
int nCurrentIndex = 0;
if (nChildCount > 0) {
final CSSNode aURINode = aNode.jjtGetChild(0);
if (ECSSNodeType.URL.isNode(aURINode, m_eVersion)) {
aImportURI = new CSSURI(aURINode.getText());
aImportURI.setSourceLocation(aURINode.getSourceLocation());
++nCurrentIndex;
} else if (!ECSSNodeType.MEDIALIST.isNode(aURINode, m_eVersion))
throw new IllegalStateException(
"Expected an URI or MEDIALIST node but got "
+ ECSSNodeType.getNodeName(aURINode, m_eVersion));
}
if (aImportURI == null) {
// No URI child node present, so the location is printed directly
// E.g. @import "abc.css"
aImportURI = new CSSURI(CSSParseHelper.extractStringValue(aNode.getText()));
}
// Import rule
final CSSImportRule ret = new CSSImportRule(aImportURI);
ret.setSourceLocation(aNode.getSourceLocation());
if (nChildCount > nCurrentIndex) {
// We have a media query present!
final CSSNode aMediaListNode = aNode.jjtGetChild(nCurrentIndex);
if (ECSSNodeType.MEDIALIST.isNode(aMediaListNode, m_eVersion)) {
for (final CSSNode aMediaQueryNode : aMediaListNode) {
ret.addMediaQuery(_createMediaQuery(aMediaQueryNode));
}
++nCurrentIndex;
} else
s_aLogger.error(
"Expected an MEDIALIST node but got "
+ ECSSNodeType.getNodeName(aMediaListNode, m_eVersion));
}
if (nCurrentIndex < nChildCount)
s_aLogger.error("Import statement has children which are unhandled.");
return ret;
}
@Nonnull
private CSSExpressionMemberFunction _createExpressionFunction(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.FUNCTION);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount > 1)
_throwUnexpectedChildrenCount(aNode, "Expected 0 or 1 children but got " + nChildCount + "!");
final String sFunctionName = aNode.getText();
CSSExpressionMemberFunction aFunc;
if (nChildCount == 1) {
// Parameters present
final CSSNode aFirstChild = aNode.jjtGetChild(0);
final CSSExpression aFuncExpr = _createExpression(aFirstChild);
aFunc = new CSSExpressionMemberFunction(sFunctionName, aFuncExpr);
} else {
// No parameters
aFunc = new CSSExpressionMemberFunction(sFunctionName);
}
aFunc.setSourceLocation(aNode.getSourceLocation());
return aFunc;
}
@Nonnull
private CSSExpression _createExpression(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.EXPR);
final CSSExpression ret = new CSSExpression();
ret.setSourceLocation(aNode.getSourceLocation());
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.EXPRTERM.isNode(aChildNode, m_eVersion))
ret.addMember(_createExpressionTerm(aChildNode));
else if (ECSSNodeType.EXPROPERATOR.isNode(aChildNode, m_eVersion)) {
final String sText = aChildNode.getText();
final ECSSExpressionOperator eOp = ECSSExpressionOperator.getFromNameOrNull(sText);
if (eOp == null) s_aLogger.error("Failed to parse expression operator '" + sText + "'");
else ret.addMember(eOp);
} else {
s_aLogger.error(
"Unsupported child of "
+ ECSSNodeType.getNodeName(aNode, m_eVersion)
+ ": "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
}
return ret;
}
@Nonnull
private CSSViewportRule _createViewportRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.VIEWPORTRULE);
// Get the identifier (e.g. the default "@viewport" or the non-standard
// "@-ms-viewport")
final String sViewportDeclaration = aNode.getText();
final CSSViewportRule ret = new CSSViewportRule(sViewportDeclaration);
ret.setSourceLocation(aNode.getSourceLocation());
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.STYLEDECLARATIONLIST.isNode(aChildNode, m_eVersion)) {
// Read all contained declarations
final int nDecls = aChildNode.jjtGetNumChildren();
for (int nDecl = 0; nDecl < nDecls; ++nDecl) {
final CSSDeclaration aDeclaration = _createDeclaration(aChildNode.jjtGetChild(nDecl));
if (aDeclaration != null) ret.addDeclaration(aDeclaration);
}
} else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported viewport rule child: " + ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
private CSSUnknownRule _createUnknownRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.UNKNOWNRULE);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount != 2)
_throwUnexpectedChildrenCount(aNode, "Expected 2 children but got " + nChildCount + "!");
final CSSNode aParameterList = aNode.jjtGetChild(0);
_expectNodeType(aParameterList, ECSSNodeType.UNKNOWNRULEPARAMETERLIST);
final CSSNode aBody = aNode.jjtGetChild(1);
_expectNodeType(aBody, ECSSNodeType.UNKNOWNRULEBODY);
// Get the name of the rule
final String sRuleDeclaration = aNode.getText();
final CSSUnknownRule ret = new CSSUnknownRule(sRuleDeclaration);
ret.setSourceLocation(aNode.getSourceLocation());
ret.setParameterList(aParameterList.getText());
ret.setBody(aBody.getText());
return ret;
}
@Nonnull
private CSSExpressionMemberMathProduct _createExpressionMathProduct(
@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.MATHPRODUCT);
final CSSExpressionMemberMathProduct ret = new CSSExpressionMemberMathProduct();
ret.setSourceLocation(aNode.getSourceLocation());
// read all sums
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.MATHUNIT.isNode(aChildNode, m_eVersion)) {
final int nChildCount = aChildNode.jjtGetNumChildren();
if (nChildCount == 0) {
final CSSExpressionMemberMathUnitSimple aMember =
new CSSExpressionMemberMathUnitSimple(aChildNode.getText());
aMember.setSourceLocation(aChildNode.getSourceLocation());
ret.addMember(aMember);
} else {
if (nChildCount != 1)
_throwUnexpectedChildrenCount(
aChildNode, "CSS math unit expected 1 child and got " + nChildCount);
final CSSNode aChildChildNode = aChildNode.jjtGetChild(0);
final CSSExpressionMemberMathProduct aNestedProduct =
_createExpressionMathProduct(aChildChildNode);
final CSSExpressionMemberMathUnitProduct aMember =
new CSSExpressionMemberMathUnitProduct(aNestedProduct);
// Source location is taken from aNestedProduct
ret.addMember(aMember);
}
} else if (ECSSNodeType.MATHPRODUCTOPERATOR.isNode(aChildNode, m_eVersion)) {
final String sText = aChildNode.getText();
final ECSSMathOperator eMathOp = ECSSMathOperator.getFromNameOrNull(sText);
if (eMathOp == null)
s_aLogger.error("Failed to parse math product operator '" + sText + "'");
else ret.addMember(eMathOp);
} else
s_aLogger.error(
"Unsupported child of "
+ ECSSNodeType.getNodeName(aNode, m_eVersion)
+ ": "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
public CascadingStyleSheet createCascadingStyleSheetFromNode(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.ROOT);
final CascadingStyleSheet ret = new CascadingStyleSheet();
ret.setSourceLocation(aNode.getSourceLocation());
for (final CSSNode aChildNode : aNode) {
if (ECSSNodeType.CHARSET.isNode(aChildNode, m_eVersion)) {
// Ignore because this was handled when reading!
} else if (ECSSNodeType.IMPORTRULE.isNode(aChildNode, m_eVersion))
ret.addImportRule(_createImportRule(aChildNode));
else if (ECSSNodeType.NAMESPACERULE.isNode(aChildNode, m_eVersion))
ret.addNamespaceRule(_createNamespaceRule(aChildNode));
else if (ECSSNodeType.STYLERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createStyleRule(aChildNode));
else if (ECSSNodeType.PAGERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createPageRule(aChildNode));
else if (ECSSNodeType.MEDIARULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createMediaRule(aChildNode));
else if (ECSSNodeType.FONTFACERULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createFontFaceRule(aChildNode));
else if (ECSSNodeType.KEYFRAMESRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createKeyframesRule(aChildNode));
else if (ECSSNodeType.VIEWPORTRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createViewportRule(aChildNode));
else if (ECSSNodeType.SUPPORTSRULE.isNode(aChildNode, m_eVersion))
ret.addRule(_createSupportsRule(aChildNode));
else if (ECSSNodeType.UNKNOWNRULE.isNode(aChildNode, m_eVersion)) {
// Unknown rule indicates either
// 1. a parsing error
// 2. a non-standard rule
ret.addRule(_createUnknownRule(aChildNode));
} else
s_aLogger.error(
"Unsupported child of "
+ ECSSNodeType.getNodeName(aNode, m_eVersion)
+ ": "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nonnull
private CSSNamespaceRule _createNamespaceRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.NAMESPACERULE);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount < 1 || nChildCount > 2)
_throwUnexpectedChildrenCount(
aNode, "Expected at least 1 child and at last 2 children but got " + nChildCount + "!");
String sPrefix = null;
int nURLIndex = 0;
if (ECSSNodeType.NAMESPACERULEPREFIX.isNode(aNode.jjtGetChild(0), m_eVersion)) {
sPrefix = aNode.jjtGetChild(0).getText();
nURLIndex++;
}
final CSSNode aURLNode = aNode.jjtGetChild(nURLIndex);
_expectNodeType(aURLNode, ECSSNodeType.NAMESPACERULEURL);
final String sURL = CSSParseHelper.extractStringValue(aURLNode.getText());
final CSSNamespaceRule ret = new CSSNamespaceRule(sPrefix, sURL);
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
@Nullable
private CSSDeclaration _createDeclaration(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.STYLEDECLARATION);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount < 1 && nChildCount > 1)
_throwUnexpectedChildrenCount(aNode, "Expected 1-3 children but got " + nChildCount + "!");
if (nChildCount == 1) {
// Syntax error. E.g. "color:;"
return null;
}
if (!ECSSNodeType.EXPR.isNode(aNode.jjtGetChild(1), m_eVersion)) {
// Syntax error. E.g. "color: !important;"
return null;
}
final String sProperty = aNode.jjtGetChild(0).getText();
final CSSExpression aExpression = _createExpression(aNode.jjtGetChild(1));
boolean bImportant = false;
if (nChildCount == 3) {
// Must be an "!important" node
final CSSNode aChildNode = aNode.jjtGetChild(2);
if (ECSSNodeType.IMPORTANT.isNode(aChildNode, m_eVersion)) bImportant = true;
else
s_aLogger.error(
"Expected an "
+ ECSSNodeType.IMPORTANT.getNodeName(m_eVersion)
+ " token but got a "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
final CSSDeclaration ret = new CSSDeclaration(sProperty, aExpression, bImportant);
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
@Nonnull
@SuppressFBWarnings("IL_INFINITE_LOOP")
private CSSMediaQuery _createMediaQuery(@Nonnull final CSSNode aNode) {
if (ECSSNodeType.MEDIUM.isNode(aNode, m_eVersion)) {
// CSS 2.1 compatibility
final String sMedium = aNode.getText();
if (ECSSMedium.getFromNameOrNull(sMedium) == null)
s_aLogger.warn(
"CSS "
+ m_eVersion.getVersionString()
+ " Media query uses unknown medium '"
+ sMedium
+ "'");
final CSSMediaQuery ret = new CSSMediaQuery(EModifier.NONE, sMedium);
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
// CSS 3.0 media query
_expectNodeType(aNode, ECSSNodeType.MEDIAQUERY);
final int nChildCount = aNode.jjtGetNumChildren();
int nStartIndex = 0;
EModifier eModifier = EModifier.NONE;
// Check if a media modifier is present
if (nChildCount > 0) {
final CSSNode aFirstChildNode = aNode.jjtGetChild(0);
if (ECSSNodeType.MEDIAMODIFIER.isNode(aFirstChildNode, m_eVersion)) {
final String sMediaModifier = aFirstChildNode.getText();
// The "mediaModifier" token might be present, but without text!!!
if (sMediaModifier != null) {
if ("not".equalsIgnoreCase(sMediaModifier)) eModifier = EModifier.NOT;
else if ("only".equalsIgnoreCase(sMediaModifier)) eModifier = EModifier.ONLY;
else s_aLogger.error("Unsupported media modifier '" + sMediaModifier + "' found!");
}
++nStartIndex;
}
}
// Next check if a medium is present
String sMedium = null;
if (nChildCount > nStartIndex) {
final CSSNode aNextChild = aNode.jjtGetChild(nStartIndex);
if (ECSSNodeType.MEDIUM.isNode(aNextChild, m_eVersion)) {
sMedium = aNextChild.getText();
if (ECSSMedium.getFromNameOrNull(sMedium) == null)
s_aLogger.warn(
"CSS "
+ m_eVersion.getVersionString()
+ " media query uses unknown medium '"
+ sMedium
+ "'");
++nStartIndex;
}
}
final CSSMediaQuery ret = new CSSMediaQuery(eModifier, sMedium);
ret.setSourceLocation(aNode.getSourceLocation());
for (int i = nStartIndex; i < nChildCount; ++i) {
final CSSNode aChildNode = aNode.jjtGetChild(i);
if (ECSSNodeType.MEDIAEXPR.isNode(aChildNode, m_eVersion))
ret.addMediaExpression(_createMediaExpr(aChildNode));
else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported media query child: " + ECSSNodeType.getNodeName(aChildNode, m_eVersion));
}
return ret;
}
@Nullable
private ICSSSelectorMember _createSelectorMember(final CSSNode aNode) {
final int nChildCount = aNode.jjtGetNumChildren();
if (ECSSNodeType.NAMESPACEPREFIX.isNode(aNode, m_eVersion)
|| ECSSNodeType.ELEMENTNAME.isNode(aNode, m_eVersion)
|| ECSSNodeType.HASH.isNode(aNode, m_eVersion)
|| ECSSNodeType.CLASS.isNode(aNode, m_eVersion)) {
if (nChildCount != 0)
_throwUnexpectedChildrenCount(
aNode, "CSS simple selector member expected 0 children and got " + nChildCount);
final CSSSelectorSimpleMember ret = new CSSSelectorSimpleMember(aNode.getText());
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
if (ECSSNodeType.ATTRIB.isNode(aNode, m_eVersion)) return _createSelectorAttribute(aNode);
if (ECSSNodeType.SELECTORCOMBINATOR.isNode(aNode, m_eVersion)) {
final String sText = aNode.getText();
final ECSSSelectorCombinator eCombinator = ECSSSelectorCombinator.getFromNameOrNull(sText);
if (eCombinator == null)
s_aLogger.error("Failed to parse CSS selector combinator '" + sText + "'");
return eCombinator;
}
if (ECSSNodeType.NEGATION.isNode(aNode, m_eVersion)) {
// Note: no children don't make sense but are syntactically allowed!
final List<CSSSelector> aNestedSelectors = new ArrayList<CSSSelector>();
for (int i = 0; i < nChildCount; ++i) {
final CSSNode aChildNode = aNode.jjtGetChild(0);
final CSSSelector aSelector = _createSelector(aChildNode);
aNestedSelectors.add(aSelector);
}
final CSSSelectorMemberNot ret = new CSSSelectorMemberNot(aNestedSelectors);
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
if (ECSSNodeType.PSEUDO.isNode(aNode, m_eVersion)) {
if (nChildCount == 0) {
// E.g. ":focus" or ":hover"
final CSSSelectorSimpleMember ret = new CSSSelectorSimpleMember(aNode.getText());
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
if (nChildCount == 1) {
final CSSNode aChildNode = aNode.jjtGetChild(0);
if (ECSSNodeType.NTH.isNode(aChildNode, m_eVersion)) {
// Handle nth. E.g. ":nth-child(even)" or ":nth-child(3n+1)"
final CSSSelectorSimpleMember ret =
new CSSSelectorSimpleMember(aNode.getText() + aChildNode.getText() + ")");
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
// It's a function (e.g. ":lang(fr)")
final CSSExpression aExpr = _createExpression(aChildNode);
final CSSSelectorMemberFunctionLike ret =
new CSSSelectorMemberFunctionLike(aNode.getText(), aExpr);
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
throw new UnsupportedOperationException(
"Not supporting pseudo-selectors with functions and "
+ nChildCount
+ " args: "
+ aNode.toString());
}
s_aLogger.error("Unsupported selector child: " + ECSSNodeType.getNodeName(aNode, m_eVersion));
return null;
}
@Nullable
private ICSSSupportsConditionMember _createSupportsConditionMemberRecursive(
@Nonnull final CSSNode aNode) {
final int nChildCount = aNode.jjtGetNumChildren();
if (ECSSNodeType.SUPPORTSCONDITIONOPERATOR.isNode(aNode, m_eVersion)) {
if (nChildCount != 0)
_throwUnexpectedChildrenCount(aNode, "Expected no children but got " + nChildCount + "!");
return ECSSSupportsConditionOperator.getFromNameCaseInsensitiveOrNull(aNode.getText());
}
if (ECSSNodeType.SUPPORTSNEGATION.isNode(aNode, m_eVersion)) {
if (nChildCount != 1)
_throwUnexpectedChildrenCount(
aNode, "Expected at exactly 1 child but got " + nChildCount + "!");
final ICSSSupportsConditionMember aNestedMember =
_createSupportsConditionMemberRecursive(aNode.jjtGetChild(0));
if (aNestedMember == null) return null;
final CSSSupportsConditionNegation ret = new CSSSupportsConditionNegation(aNestedMember);
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
if (ECSSNodeType.SUPPORTSCONDITIONINPARENS.isNode(aNode, m_eVersion)) {
if (nChildCount != 1)
_throwUnexpectedChildrenCount(
aNode, "Expected at exactly 1 child but got " + nChildCount + "!");
final CSSNode aChildNode = aNode.jjtGetChild(0);
if (ECSSNodeType.STYLEDECLARATION.isNode(aChildNode, m_eVersion)) {
final CSSDeclaration aDeclaration = _createDeclaration(aChildNode);
if (aDeclaration == null)
throw new CSSHandlingException(
aChildNode, "The style declaration in the @supports rule is invalid!");
final CSSSupportsConditionDeclaration ret =
new CSSSupportsConditionDeclaration(aDeclaration);
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
if (ECSSNodeType.SUPPORTSCONDITION.isNode(aChildNode, m_eVersion)) {
final CSSSupportsConditionNested ret = new CSSSupportsConditionNested();
for (final CSSNode aChildChildNode : aChildNode) {
final ICSSSupportsConditionMember aMember =
_createSupportsConditionMemberRecursive(aChildChildNode);
if (aMember != null) ret.addMember(aMember);
}
return ret;
}
s_aLogger.error(
"Unsupported supportsConditionInParents child: "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
return null;
}
if (!ECSSNodeType.isErrorNode(aNode, m_eVersion))
s_aLogger.error(
"Unsupported supports-condition child: " + ECSSNodeType.getNodeName(aNode, m_eVersion));
return null;
}
@Nonnull
private CSSSelectorAttribute _createSelectorAttribute(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.ATTRIB);
final int nChildren = aNode.jjtGetNumChildren();
// Check if a namespace prefix is present
String sNamespacePrefix = null;
int nOperatorIndex = 0;
if (nChildren > 0 && ECSSNodeType.NAMESPACEPREFIX.isNode(aNode.jjtGetChild(0), m_eVersion)) {
sNamespacePrefix = aNode.jjtGetChild(0).getText();
nOperatorIndex = 1;
}
final String sAttrName = aNode.getText();
CSSSelectorAttribute ret;
if (nChildren == nOperatorIndex) {
// Just check for existence of the attribute
ret = new CSSSelectorAttribute(sNamespacePrefix, sAttrName);
} else {
final int nExpectedChildCount = nOperatorIndex + 2;
if (nChildren != nExpectedChildCount)
_throwUnexpectedChildrenCount(
aNode,
"Illegal number of children present ("
+ nChildren
+ ") - expected "
+ nExpectedChildCount);
// With operator...
final CSSNode aOperator = aNode.jjtGetChild(nOperatorIndex);
_expectNodeType(aOperator, ECSSNodeType.ATTRIBOPERATOR);
// ...and value
final CSSNode aAttrValue = aNode.jjtGetChild(nOperatorIndex + 1);
_expectNodeType(aAttrValue, ECSSNodeType.ATTRIBVALUE);
ret =
new CSSSelectorAttribute(
sNamespacePrefix,
sAttrName,
ECSSAttributeOperator.getFromNameOrNull(aOperator.getText()),
aAttrValue.getText());
}
ret.setSourceLocation(aNode.getSourceLocation());
return ret;
}
@Nonnull
private CSSKeyframesRule _createKeyframesRule(@Nonnull final CSSNode aNode) {
_expectNodeType(aNode, ECSSNodeType.KEYFRAMESRULE);
final int nChildCount = aNode.jjtGetNumChildren();
if (nChildCount == 0)
_throwUnexpectedChildrenCount(
aNode, "Expected at least 1 child but got " + nChildCount + "!");
// Get the identifier (e.g. the default "@keyframes" or the non-standard
// "@-webkit-keyframes")
final String sKeyframesDeclaration = aNode.getText();
// get the name of the animation
final CSSNode aAnimationNameNode = aNode.jjtGetChild(0);
_expectNodeType(aAnimationNameNode, ECSSNodeType.KEYFRAMESIDENTIFIER);
final String sAnimationName = aAnimationNameNode.getText();
final CSSKeyframesRule ret = new CSSKeyframesRule(sKeyframesDeclaration, sAnimationName);
ret.setSourceLocation(aNode.getSourceLocation());
// Get the key frame blocks
int nIndex = 1;
CSSKeyframesBlock aBlock = null;
while (nIndex < nChildCount) {
final CSSNode aChildNode = aNode.jjtGetChild(nIndex);
if (ECSSNodeType.KEYFRAMESSELECTOR.isNode(aChildNode, m_eVersion)) {
// Read all single selectors
final List<String> aKeyframesSelectors = new ArrayList<String>();
for (final CSSNode aSelectorChild : aChildNode) {
_expectNodeType(aSelectorChild, ECSSNodeType.SINGLEKEYFRAMESELECTOR);
aKeyframesSelectors.add(aSelectorChild.getText());
}
aBlock = new CSSKeyframesBlock(aKeyframesSelectors);
aBlock.setSourceLocation(aChildNode.getSourceLocation());
ret.addBlock(aBlock);
} else if (ECSSNodeType.STYLEDECLARATIONLIST.isNode(aChildNode, m_eVersion)) {
if (aBlock == null) throw new IllegalStateException("No keyframes block present!");
// Read all contained declarations
final int nDecls = aChildNode.jjtGetNumChildren();
for (int nDecl = 0; nDecl < nDecls; ++nDecl) {
final CSSDeclaration aDeclaration = _createDeclaration(aChildNode.jjtGetChild(nDecl));
if (aDeclaration != null) aBlock.addDeclaration(aDeclaration);
}
} else if (!ECSSNodeType.isErrorNode(aChildNode, m_eVersion))
s_aLogger.error(
"Unsupported keyframes rule child: "
+ ECSSNodeType.getNodeName(aChildNode, m_eVersion));
++nIndex;
}
return ret;
}