XPathResult* XPathEvaluator::evaluate(const String& expression, Node* contextNode, XPathNSResolver* resolver, unsigned short type, const ScriptValue&, ExceptionState& exceptionState) { if (!isValidContextNode(contextNode)) { exceptionState.throwDOMException(NotSupportedError, "The node provided is '" + contextNode->nodeName() + "', which is not a valid context node type."); return nullptr; } XPathExpression* expr = createExpression(expression, resolver, exceptionState); if (exceptionState.hadException()) return nullptr; return expr->evaluate(contextNode, type, ScriptValue(), exceptionState); }
static v8::Handle<v8::Value> evaluateCallback(const v8::Arguments& args) { INC_STATS("DOM.XPathExpression.evaluate"); XPathExpression* imp = V8XPathExpression::toNative(args.Holder()); ExceptionCode ec = 0; { EXCEPTION_BLOCK(Node*, contextNode, V8Node::HasInstance(args[0]) ? V8Node::toNative(v8::Handle<v8::Object>::Cast(args[0])) : 0); EXCEPTION_BLOCK(int, type, toUInt32(args[1])); EXCEPTION_BLOCK(XPathResult*, inResult, V8XPathResult::HasInstance(args[2]) ? V8XPathResult::toNative(v8::Handle<v8::Object>::Cast(args[2])) : 0); RefPtr<XPathResult> result = imp->evaluate(contextNode, type, inResult, ec); if (UNLIKELY(ec)) goto fail; return toV8(result.release()); } fail: V8Proxy::setDOMException(ec); return v8::Handle<v8::Value>(); }
EncodedJSValue JSC_HOST_CALL jsXPathExpressionPrototypeFunctionEvaluate(ExecState* exec) { JSValue thisValue = exec->hostThisValue(); if (!thisValue.inherits(&JSXPathExpression::s_info)) return throwVMTypeError(exec); JSXPathExpression* castedThis = static_cast<JSXPathExpression*>(asObject(thisValue)); ASSERT_GC_OBJECT_INHERITS(castedThis, &JSXPathExpression::s_info); XPathExpression* imp = static_cast<XPathExpression*>(castedThis->impl()); ExceptionCode ec = 0; Node* contextNode(toNode(exec->argument(0))); if (exec->hadException()) return JSValue::encode(jsUndefined()); unsigned short type(exec->argument(1).toUInt32(exec)); if (exec->hadException()) return JSValue::encode(jsUndefined()); XPathResult* inResult(toXPathResult(exec->argument(2))); if (exec->hadException()) return JSValue::encode(jsUndefined()); JSC::JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->evaluate(contextNode, type, inResult, ec))); setDOMException(exec, ec); return JSValue::encode(result); }
int main(int argc, char** argv) { factory_ = Arabica::SimpleDOM::DOMImplementation<string_type, string_adaptor>::getDOMImplementation(); document_ = factory_.createDocument(SA::construct_from_utf8(""), SA::construct_from_utf8(""), 0); root_ = document_.createElement("root"); document_.appendChild(root_); assert(root_); element1_ = document_.createElement(SA::construct_from_utf8("child1")); element2_ = document_.createElement(SA::construct_from_utf8("child2")); element3_ = document_.createElement(SA::construct_from_utf8("child3")); element1_.setAttribute(SA::construct_from_utf8("one"), SA::construct_from_utf8("1")); element2_.setAttribute(SA::construct_from_utf8("one"), SA::construct_from_utf8("1")); element2_.setAttribute(SA::construct_from_utf8("two"), SA::construct_from_utf8("1")); element2_.setAttribute(SA::construct_from_utf8("three"), SA::construct_from_utf8("1")); element2_.setAttribute(SA::construct_from_utf8("four"), SA::construct_from_utf8("1")); text_ = document_.createTextNode(SA::construct_from_utf8("data")); comment_ = document_.createComment(SA::construct_from_utf8("comment")); processingInstruction_ = document_.createProcessingInstruction(SA::construct_from_utf8("target"), SA::construct_from_utf8("data")); element2_.appendChild(text_); spinkle_ = document_.createElement(SA::construct_from_utf8("spinkle")); element2_.appendChild(spinkle_); element2_.appendChild(comment_); element2_.appendChild(processingInstruction_); attr_ = element1_.getAttributeNode(SA::construct_from_utf8("one")); root_.appendChild(element1_); root_.appendChild(element2_); root_.appendChild(element3_); chapters_ = factory_.createDocument(SA::construct_from_utf8(""), SA::construct_from_utf8(""), 0); chapters_.appendChild(chapters_.createElement(SA::construct_from_utf8("document"))); chapters_.getFirstChild().appendChild(chapters_.createElement(SA::construct_from_utf8("chapter"))).appendChild(chapters_.createTextNode(SA::construct_from_utf8("one"))); chapters_.getFirstChild().appendChild(chapters_.createElement(SA::construct_from_utf8("chapter"))).appendChild(chapters_.createTextNode(SA::construct_from_utf8("two"))); chapters_.getFirstChild().appendChild(chapters_.createElement(SA::construct_from_utf8("chapter"))).appendChild(chapters_.createTextNode(SA::construct_from_utf8("three"))); chapters_.getFirstChild().appendChild(chapters_.createElement(SA::construct_from_utf8("chapter"))).appendChild(chapters_.createTextNode(SA::construct_from_utf8("four"))); chapters_.getFirstChild().appendChild(chapters_.createElement(SA::construct_from_utf8("chapter"))).appendChild(chapters_.createTextNode(SA::construct_from_utf8("five"))); numbers_ = factory_.createDocument(SA::construct_from_utf8(""), SA::construct_from_utf8(""), 0); numbers_.appendChild(numbers_.createElement(SA::construct_from_utf8("doc"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("1"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("2"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("3"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("4"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("5"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("6"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("7"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("8"))); numbers_.getFirstChild().appendChild(numbers_.createElement(SA::construct_from_utf8("number"))).appendChild(numbers_.createTextNode(SA::construct_from_utf8("9"))); std::cout << document_ << std::endl; std::cout << numbers_ << std::endl; std::cout << chapters_ << std::endl; if (true) { using namespace Arabica::XPath; using namespace Arabica::DOM; XPathValue<string_type, string_adaptor> result = parser.evaluate(SA::construct_from_utf8("//*"), document_); for(int i = 0; i < result.asNodeSet().size(); i++) { Node<string_type, string_adaptor> node = result.asNodeSet()[i]; std::string xpathExpr = uscxml::DOMUtils::xPathForNode(node); if (xpathExpr.size()) { XPathValue<string_type, string_adaptor> innerResult = parser.evaluate(xpathExpr, document_); assert(innerResult.asNodeSet().size() > 0); assert(innerResult.asNodeSet().size() == 1); assert(innerResult.asNodeSet()[0] == node); } else { assert(node.getNodeType() != Node_base::ELEMENT_NODE); } } } if (false) { using namespace Arabica::XPath; StringVariableResolver svr; svr.setVariable(SA::construct_from_utf8("index"), SA::construct_from_utf8("1")); parser.setVariableResolver(svr); XPathValue<string_type, string_adaptor> result = parser.evaluate(SA::construct_from_utf8("/root/*[@two = $index]"), document_); assert(NODE_SET == result.type()); assert(element2_ == result.asNodeSet()[0]); parser.resetVariableResolver(); } // test18 if (false) { using namespace Arabica::XPath; XPathExpression<string_type, string_adaptor> xpath = parser.compile(SA::construct_from_utf8("root/*[position() = 2]")); XPathValue<string_type, string_adaptor> result = xpath.evaluate(document_); assert(NODE_SET == result.type()); assert(1 == result.asNodeSet().size()); Arabica::DOM::Node<string_type, string_adaptor> n = result.asNodeSet()[0]; assert(element2_ == n); } // test19 if (false) { using namespace Arabica::XPath; Arabica::DOM::DocumentFragment<string_type, string_adaptor> frag = document_.createDocumentFragment(); frag.appendChild(document_.createElement(SA::construct_from_utf8("foo"))); NodeSetVariableResolver svr; NodeSet<string_type, string_adaptor> ns; ns.push_back(frag); svr.setVariable(SA::construct_from_utf8("fruit"), ns); parser.setVariableResolver(svr); XPathValue<string_type, string_adaptor> result = parser.evaluate_expr(SA::construct_from_utf8("$fruit/foo|/root/child3"), document_); assert(NODE_SET == result.type()); assert(2 == result.asNodeSet().size()); assert(element3_ == result.asNodeSet()[0]); } // testUnion11 if (false) { using namespace Arabica::XPath; XPathValue<string_type, string_adaptor> result = parser.evaluate_expr(SA::construct_from_utf8("local-name(/root)"), document_); assert(STRING == result.type()); assert(SA::construct_from_utf8("root") == result.asString()); } // testLocalNameFn1 if (0) { using namespace Arabica::XPath; Arabica::DOM::DocumentFragment<std::string> frag = document_.createDocumentFragment(); frag.appendChild(document_.createElement("foo")); NodeSetVariableResolver svr; NodeSet<string_type, string_adaptor> ns; ns.push_back(frag); svr.setVariable("fruit", ns); parser.setVariableResolver(svr); XPathValue<string_type, string_adaptor> result = parser.evaluate(SA::construct_from_utf8("local-name($fruit/foo) == 'foo'"), document_); std::cout << result.asBool() << std::endl; } }