nsresult txPatternParser::createKeyPattern(txExprLexer& aLexer,
txIParseContext* aContext,
txPattern*& aPattern)
{
// check for '(' Literal, Literal ')'
if (aLexer.peek()->mType != Token::LITERAL)
return NS_ERROR_XPATH_PARSE_FAILURE;
const nsDependentSubstring& key =
aLexer.nextToken()->Value();
if (aLexer.nextToken()->mType != Token::COMMA &&
aLexer.peek()->mType != Token::LITERAL)
return NS_ERROR_XPATH_PARSE_FAILURE;
const nsDependentSubstring& value =
aLexer.nextToken()->Value();
if (aLexer.nextToken()->mType != Token::R_PAREN)
return NS_ERROR_XPATH_PARSE_FAILURE;
const PRUnichar* colon;
if (!XMLUtils::isValidQName(PromiseFlatString(key), &colon))
return NS_ERROR_XPATH_PARSE_FAILURE;
nsCOMPtr<nsIAtom> prefix, localName;
PRInt32 namespaceID;
nsresult rv = resolveQName(key, getter_AddRefs(prefix), aContext,
getter_AddRefs(localName), namespaceID);
if (NS_FAILED(rv))
return rv;
aPattern = new txKeyPattern(prefix, localName, namespaceID, value);
return aPattern ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
nsresult txPatternParser::createKeyPattern(txExprLexer& aLexer,
txIParseContext* aContext,
txPattern*& aPattern)
{
// check for '(' Literal, Literal ')'
if (aLexer.peek()->mType != Token::LITERAL)
return NS_ERROR_XPATH_PARSE_FAILURE;
const nsDependentSubstring& key =
aLexer.nextToken()->Value();
if (aLexer.nextToken()->mType != Token::COMMA &&
aLexer.peek()->mType != Token::LITERAL)
return NS_ERROR_XPATH_PARSE_FAILURE;
const nsDependentSubstring& value =
aLexer.nextToken()->Value();
if (aLexer.nextToken()->mType != Token::R_PAREN)
return NS_ERROR_XPATH_PARSE_FAILURE;
if (!aContext->allowed(txIParseContext::KEY_FUNCTION))
return NS_ERROR_XSLT_CALL_TO_KEY_NOT_ALLOWED;
const char16_t* colon;
if (!XMLUtils::isValidQName(key, &colon)) {
return NS_ERROR_XPATH_PARSE_FAILURE;
}
RefPtr<nsAtom> prefix, localName;
int32_t namespaceID;
nsresult rv = resolveQName(key, getter_AddRefs(prefix), aContext,
getter_AddRefs(localName), namespaceID);
if (NS_FAILED(rv))
return rv;
aPattern = new txKeyPattern(prefix, localName, namespaceID, value);
return NS_OK;
}
nsresult txPatternParser::createStepPattern(txExprLexer& aLexer,
txIParseContext* aContext,
txPattern*& aPattern)
{
nsresult rv = NS_OK;
bool isAttr = false;
Token* tok = aLexer.peek();
if (tok->mType == Token::AXIS_IDENTIFIER) {
if (TX_StringEqualsAtom(tok->Value(), nsGkAtoms::attribute)) {
isAttr = true;
}
else if (!TX_StringEqualsAtom(tok->Value(), nsGkAtoms::child)) {
// all done already for CHILD_AXIS, for all others
// XXX report unexpected axis error
return NS_ERROR_XPATH_PARSE_FAILURE;
}
aLexer.nextToken();
}
else if (tok->mType == Token::AT_SIGN) {
aLexer.nextToken();
isAttr = true;
}
txNodeTest* nodeTest;
if (aLexer.peek()->mType == Token::CNAME) {
tok = aLexer.nextToken();
// resolve QName
RefPtr<nsAtom> prefix, lName;
int32_t nspace;
rv = resolveQName(tok->Value(), getter_AddRefs(prefix), aContext,
getter_AddRefs(lName), nspace, true);
if (NS_FAILED(rv)) {
// XXX error report namespace resolve failed
return rv;
}
uint16_t nodeType = isAttr ?
(uint16_t)txXPathNodeType::ATTRIBUTE_NODE :
(uint16_t)txXPathNodeType::ELEMENT_NODE;
nodeTest = new txNameTest(prefix, lName, nspace, nodeType);
}
else {
rv = createNodeTypeTest(aLexer, &nodeTest);
NS_ENSURE_SUCCESS(rv, rv);
}
nsAutoPtr<txStepPattern> step(new txStepPattern(nodeTest, isAttr));
rv = parsePredicates(step, aLexer, aContext);
NS_ENSURE_SUCCESS(rv, rv);
aPattern = step.forget();
return NS_OK;
}
nsresult
txExprParser::createFunctionCall(txExprLexer& lexer, txIParseContext* aContext,
Expr** aResult)
{
*aResult = nsnull;
nsAutoPtr<FunctionCall> fnCall;
Token* tok = lexer.nextToken();
NS_ASSERTION(tok->mType == Token::FUNCTION_NAME_AND_PAREN,
"FunctionCall expected");
//-- compare function names
nsCOMPtr<nsIAtom> prefix, lName;
PRInt32 namespaceID;
nsresult rv = resolveQName(tok->Value(), getter_AddRefs(prefix), aContext,
getter_AddRefs(lName), namespaceID);
NS_ENSURE_SUCCESS(rv, rv);
txCoreFunctionCall::eType type;
if (namespaceID == kNameSpaceID_None &&
txCoreFunctionCall::getTypeFromAtom(lName, type)) {
// It is a known built-in function.
fnCall = new txCoreFunctionCall(type);
NS_ENSURE_TRUE(fnCall, NS_ERROR_OUT_OF_MEMORY);
}
// check extension functions and xslt
if (!fnCall) {
rv = aContext->resolveFunctionCall(lName, namespaceID,
getter_Transfers(fnCall));
if (rv == NS_ERROR_NOT_IMPLEMENTED) {
// this should just happen for unparsed-entity-uri()
NS_ASSERTION(!fnCall, "Now is it implemented or not?");
rv = parseParameters(0, lexer, aContext);
NS_ENSURE_SUCCESS(rv, rv);
*aResult = new txLiteralExpr(tok->Value() +
NS_LITERAL_STRING(" not implemented."));
NS_ENSURE_TRUE(*aResult, NS_ERROR_OUT_OF_MEMORY);
return NS_OK;
}
NS_ENSURE_SUCCESS(rv, rv);
}
//-- handle parametes
rv = parseParameters(fnCall, lexer, aContext);
NS_ENSURE_SUCCESS(rv, rv);
*aResult = fnCall.forget();
return NS_OK;
}
void XSAXMLScanner::scanRawAttrListforNameSpaces(int attCount)
{
// Make an initial pass through the list and find any xmlns attributes or
// schema attributes.
// When we find one, send it off to be used to update the element stack's
// namespace mappings.
int index = 0;
for (index = 0; index < attCount; index++)
{
// each attribute has the prefix:suffix="value"
const KVStringPair* curPair = fRawAttrList->elementAt(index);
const XMLCh* rawPtr = curPair->getKey();
// If either the key begins with "xmlns:" or its just plain
// "xmlns", then use it to update the map.
if (!XMLString::compareNString(rawPtr, XMLUni::fgXMLNSColonString, 6)
|| XMLString::equals(rawPtr, XMLUni::fgXMLNSString))
{
const XMLCh* valuePtr = curPair->getValue();
updateNSMap(rawPtr, valuePtr, fRawAttrColonList[index]);
// if the schema URI is seen in the the valuePtr, set the boolean seeXsi
if (XMLString::equals(valuePtr, SchemaSymbols::fgURI_XSI)) {
fSeeXsi = true;
}
}
}
// walk through the list again to deal with "xsi:...."
if (fSeeXsi)
{
// Schema Xsi Type yyyy (e.g. xsi:type="yyyyy")
XMLBufBid bbXsi(&fBufMgr);
XMLBuffer& fXsiType = bbXsi.getBuffer();
QName attName(fMemoryManager);
for (index = 0; index < attCount; index++)
{
// each attribute has the prefix:suffix="value"
const KVStringPair* curPair = fRawAttrList->elementAt(index);
const XMLCh* rawPtr = curPair->getKey();
attName.setName(rawPtr, fEmptyNamespaceId);
const XMLCh* prefPtr = attName.getPrefix();
// if schema URI has been seen, scan for the schema location and uri
// and resolve the schema grammar; or scan for schema type
if (resolvePrefix(prefPtr, ElemStack::Mode_Attribute) == fSchemaNamespaceId) {
const XMLCh* valuePtr = curPair->getValue();
const XMLCh* suffPtr = attName.getLocalPart();
if (XMLString::equals(suffPtr, SchemaSymbols::fgXSI_TYPE)) {
fXsiType.set(valuePtr);
}
else if (XMLString::equals(suffPtr, SchemaSymbols::fgATT_NILL)
&& XMLString::equals(valuePtr, SchemaSymbols::fgATTVAL_TRUE)) {
((SchemaValidator*)fValidator)->setNillable(true);
}
}
}
if (!fXsiType.isEmpty())
{
int colonPos = -1;
unsigned int uriId = resolveQName
(
fXsiType.getRawBuffer(), fPrefixBuf, ElemStack::Mode_Element, colonPos
);
((SchemaValidator*)fValidator)->setXsiType(fPrefixBuf.getRawBuffer(), fXsiType.getRawBuffer() + colonPos + 1, uriId);
}
}
}
nsresult txPatternParser::createStepPattern(txExprLexer& aLexer,
txIParseContext* aContext,
txPattern*& aPattern)
{
nsresult rv = NS_OK;
MBool isAttr = MB_FALSE;
Token* tok = aLexer.peek();
if (tok->mType == Token::AXIS_IDENTIFIER) {
if (TX_StringEqualsAtom(tok->Value(), txXPathAtoms::attribute)) {
isAttr = MB_TRUE;
}
else if (!TX_StringEqualsAtom(tok->Value(), txXPathAtoms::child)) {
// all done already for CHILD_AXIS, for all others
// XXX report unexpected axis error
return NS_ERROR_XPATH_PARSE_FAILURE;
}
aLexer.nextToken();
}
else if (tok->mType == Token::AT_SIGN) {
aLexer.nextToken();
isAttr = MB_TRUE;
}
tok = aLexer.nextToken();
txNodeTest* nodeTest;
if (tok->mType == Token::CNAME) {
// resolve QName
nsCOMPtr<nsIAtom> prefix, lName;
PRInt32 nspace;
rv = resolveQName(tok->Value(), getter_AddRefs(prefix), aContext,
getter_AddRefs(lName), nspace, PR_TRUE);
if (NS_FAILED(rv)) {
// XXX error report namespace resolve failed
return rv;
}
PRUint16 nodeType = isAttr ?
(PRUint16)txXPathNodeType::ATTRIBUTE_NODE :
(PRUint16)txXPathNodeType::ELEMENT_NODE;
nodeTest = new txNameTest(prefix, lName, nspace, nodeType);
if (!nodeTest) {
return NS_ERROR_OUT_OF_MEMORY;
}
}
else {
aLexer.pushBack();
rv = createNodeTypeTest(aLexer, &nodeTest);
NS_ENSURE_SUCCESS(rv, rv);
}
nsAutoPtr<txStepPattern> step(new txStepPattern(nodeTest, isAttr));
if (!step) {
delete nodeTest;
return NS_ERROR_OUT_OF_MEMORY;
}
rv = parsePredicates(step, aLexer, aContext);
NS_ENSURE_SUCCESS(rv, rv);
aPattern = step.forget();
return NS_OK;
}
nsresult
txExprParser::createLocationStep(txExprLexer& lexer, txIParseContext* aContext,
Expr** aExpr)
{
*aExpr = nullptr;
//-- child axis is default
LocationStep::LocationStepType axisIdentifier = LocationStep::CHILD_AXIS;
nsAutoPtr<txNodeTest> nodeTest;
//-- get Axis Identifier or AbbreviatedStep, if present
Token* tok = lexer.peek();
switch (tok->mType) {
case Token::AXIS_IDENTIFIER:
{
//-- eat token
lexer.nextToken();
nsCOMPtr<nsIAtom> axis = do_GetAtom(tok->Value());
if (axis == nsGkAtoms::ancestor) {
axisIdentifier = LocationStep::ANCESTOR_AXIS;
}
else if (axis == nsGkAtoms::ancestorOrSelf) {
axisIdentifier = LocationStep::ANCESTOR_OR_SELF_AXIS;
}
else if (axis == nsGkAtoms::attribute) {
axisIdentifier = LocationStep::ATTRIBUTE_AXIS;
}
else if (axis == nsGkAtoms::child) {
axisIdentifier = LocationStep::CHILD_AXIS;
}
else if (axis == nsGkAtoms::descendant) {
axisIdentifier = LocationStep::DESCENDANT_AXIS;
}
else if (axis == nsGkAtoms::descendantOrSelf) {
axisIdentifier = LocationStep::DESCENDANT_OR_SELF_AXIS;
}
else if (axis == nsGkAtoms::following) {
axisIdentifier = LocationStep::FOLLOWING_AXIS;
}
else if (axis == nsGkAtoms::followingSibling) {
axisIdentifier = LocationStep::FOLLOWING_SIBLING_AXIS;
}
else if (axis == nsGkAtoms::_namespace) {
axisIdentifier = LocationStep::NAMESPACE_AXIS;
}
else if (axis == nsGkAtoms::parent) {
axisIdentifier = LocationStep::PARENT_AXIS;
}
else if (axis == nsGkAtoms::preceding) {
axisIdentifier = LocationStep::PRECEDING_AXIS;
}
else if (axis == nsGkAtoms::precedingSibling) {
axisIdentifier = LocationStep::PRECEDING_SIBLING_AXIS;
}
else if (axis == nsGkAtoms::self) {
axisIdentifier = LocationStep::SELF_AXIS;
}
else {
return NS_ERROR_XPATH_INVALID_AXIS;
}
break;
}
case Token::AT_SIGN:
//-- eat token
lexer.nextToken();
axisIdentifier = LocationStep::ATTRIBUTE_AXIS;
break;
case Token::PARENT_NODE :
//-- eat token
lexer.nextToken();
axisIdentifier = LocationStep::PARENT_AXIS;
nodeTest = new txNodeTypeTest(txNodeTypeTest::NODE_TYPE);
break;
case Token::SELF_NODE :
//-- eat token
lexer.nextToken();
axisIdentifier = LocationStep::SELF_AXIS;
nodeTest = new txNodeTypeTest(txNodeTypeTest::NODE_TYPE);
break;
default:
break;
}
//-- get NodeTest unless an AbbreviatedStep was found
nsresult rv = NS_OK;
if (!nodeTest) {
tok = lexer.peek();
if (tok->mType == Token::CNAME) {
lexer.nextToken();
// resolve QName
nsCOMPtr<nsIAtom> prefix, lName;
int32_t nspace;
rv = resolveQName(tok->Value(), getter_AddRefs(prefix),
aContext, getter_AddRefs(lName),
nspace, true);
NS_ENSURE_SUCCESS(rv, rv);
nodeTest =
new txNameTest(prefix, lName, nspace,
axisIdentifier == LocationStep::ATTRIBUTE_AXIS ?
static_cast<uint16_t>(txXPathNodeType::ATTRIBUTE_NODE) :
static_cast<uint16_t>(txXPathNodeType::ELEMENT_NODE));
}
else {
rv = createNodeTypeTest(lexer, getter_Transfers(nodeTest));
NS_ENSURE_SUCCESS(rv, rv);
}
}
nsAutoPtr<LocationStep> lstep(new LocationStep(nodeTest, axisIdentifier));
nodeTest.forget();
//-- handle predicates
rv = parsePredicates(lstep, lexer, aContext);
NS_ENSURE_SUCCESS(rv, rv);
*aExpr = lstep.forget();
return NS_OK;
}
nsresult
txExprParser::createFilterOrStep(txExprLexer& lexer, txIParseContext* aContext,
Expr** aResult)
{
*aResult = nullptr;
nsresult rv = NS_OK;
Token* tok = lexer.peek();
nsAutoPtr<Expr> expr;
switch (tok->mType) {
case Token::FUNCTION_NAME_AND_PAREN:
rv = createFunctionCall(lexer, aContext, getter_Transfers(expr));
NS_ENSURE_SUCCESS(rv, rv);
break;
case Token::VAR_REFERENCE :
lexer.nextToken();
{
nsCOMPtr<nsIAtom> prefix, lName;
int32_t nspace;
nsresult rv = resolveQName(tok->Value(), getter_AddRefs(prefix),
aContext, getter_AddRefs(lName),
nspace);
NS_ENSURE_SUCCESS(rv, rv);
expr = new VariableRefExpr(prefix, lName, nspace);
}
break;
case Token::L_PAREN:
lexer.nextToken();
rv = createExpr(lexer, aContext, getter_Transfers(expr));
NS_ENSURE_SUCCESS(rv, rv);
if (lexer.peek()->mType != Token::R_PAREN) {
return NS_ERROR_XPATH_PAREN_EXPECTED;
}
lexer.nextToken();
break;
case Token::LITERAL :
lexer.nextToken();
expr = new txLiteralExpr(tok->Value());
break;
case Token::NUMBER:
{
lexer.nextToken();
expr = new txLiteralExpr(txDouble::toDouble(tok->Value()));
break;
}
default:
return createLocationStep(lexer, aContext, aResult);
}
if (lexer.peek()->mType == Token::L_BRACKET) {
nsAutoPtr<FilterExpr> filterExpr(new FilterExpr(expr));
expr.forget();
//-- handle predicates
rv = parsePredicates(filterExpr, lexer, aContext);
NS_ENSURE_SUCCESS(rv, rv);
expr = filterExpr.forget();
}
*aResult = expr.forget();
return NS_OK;
}