Expression* Parser::parseStatement(const String& statement, PassRefPtr<XPathNSResolver> resolver, ExceptionCode& ec)
{
reset(statement);
m_resolver = resolver;
Parser* oldParser = currentParser;
currentParser = this;
int parseError = xpathyyparse(this);
currentParser = oldParser;
if (parseError) {
deleteAllValues(m_parseNodes);
m_parseNodes.clear();
HashSet<Vector<Predicate*>*>::iterator pend = m_predicateVectors.end();
for (HashSet<Vector<Predicate*>*>::iterator it = m_predicateVectors.begin(); it != pend; ++it) {
deleteAllValues(**it);
delete *it;
}
m_predicateVectors.clear();
HashSet<Vector<Expression*>*>::iterator eend = m_expressionVectors.end();
for (HashSet<Vector<Expression*>*>::iterator it = m_expressionVectors.begin(); it != eend; ++it) {
deleteAllValues(**it);
delete *it;
}
m_expressionVectors.clear();
deleteAllValues(m_strings);
m_strings.clear();
m_topExpr = 0;
if (m_gotNamespaceError)
ec = NAMESPACE_ERR;
else
ec = INVALID_EXPRESSION_ERR;
return 0;
}
ASSERT(m_parseNodes.size() == 1);
ASSERT(*m_parseNodes.begin() == m_topExpr);
ASSERT(m_expressionVectors.size() == 0);
ASSERT(m_predicateVectors.size() == 0);
ASSERT(m_strings.size() == 0);
m_parseNodes.clear();
Expression* result = m_topExpr;
m_topExpr = 0;
return result;
}
ExceptionOr<std::unique_ptr<Expression>> Parser::parseStatement(const String& statement, RefPtr<XPathNSResolver>&& resolver)
{
Parser parser { statement, WTFMove(resolver) };
int parseError = xpathyyparse(parser);
if (parser.m_sawNamespaceError)
return Exception { NAMESPACE_ERR };
if (parseError)
return Exception { XPathException::INVALID_EXPRESSION_ERR };
return WTFMove(parser.m_result);
}
std::unique_ptr<Expression> Parser::parseStatement(const String& statement, XPathNSResolver* resolver, ExceptionCode& ec)
{
Parser parser(statement, resolver);
int parseError = xpathyyparse(parser);
if (parser.m_sawNamespaceError) {
ec = NAMESPACE_ERR;
return nullptr;
}
if (parseError) {
ec = XPathException::INVALID_EXPRESSION_ERR;
return nullptr;
}
return std::move(parser.m_result);
}