Add m-esr52 at 52.6.0

1 files changed, 263 insertions, 0 deletions

diff --git a/dom/xslt/xpath/XPathEvaluator.cpp b/dom/xslt/xpath/XPathEvaluator.cpp
new file mode 100644
index 000000000..e7170373d
--- /dev/null
+++ b/dom/xslt/xpath/XPathEvaluator.cpp
@@ -0,0 +1,263 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/XPathEvaluator.h"
+#include "mozilla/Move.h"
+#include "nsCOMPtr.h"
+#include "nsIAtom.h"
+#include "mozilla/dom/XPathExpression.h"
+#include "XPathResult.h"
+#include "nsContentCID.h"
+#include "txExpr.h"
+#include "txExprParser.h"
+#include "nsError.h"
+#include "txURIUtils.h"
+#include "nsIDocument.h"
+#include "nsIDOMDocument.h"
+#include "nsDOMString.h"
+#include "nsNameSpaceManager.h"
+#include "nsContentUtils.h"
+#include "txIXPathContext.h"
+#include "mozilla/dom/XPathEvaluatorBinding.h"
+#include "mozilla/dom/BindingUtils.h"
+#include "mozilla/dom/XPathNSResolverBinding.h"
+
+extern nsresult
+TX_ResolveFunctionCallXPCOM(const nsCString &aContractID, int32_t aNamespaceID,
+                            nsIAtom *aName, nsISupports *aState,
+                            FunctionCall **aFunction);
+
+namespace mozilla {
+namespace dom {
+
+// txIParseContext implementation
+class XPathEvaluatorParseContext : public txIParseContext
+{
+public:
+    XPathEvaluatorParseContext(XPathNSResolver* aResolver,
+                               bool aIsCaseSensitive)
+        : mResolver(aResolver),
+          mResolverNode(nullptr),
+          mLastError(NS_OK),
+          mIsCaseSensitive(aIsCaseSensitive)
+    {
+    }
+    XPathEvaluatorParseContext(nsINode* aResolver,
+                               bool aIsCaseSensitive)
+        : mResolver(nullptr),
+          mResolverNode(aResolver),
+          mLastError(NS_OK),
+          mIsCaseSensitive(aIsCaseSensitive)
+    {
+    }
+
+    nsresult getError()
+    {
+        return mLastError;
+    }
+
+    nsresult resolveNamespacePrefix(nsIAtom* aPrefix, int32_t& aID);
+    nsresult resolveFunctionCall(nsIAtom* aName, int32_t aID,
+                                 FunctionCall** aFunction);
+    bool caseInsensitiveNameTests();
+    void SetErrorOffset(uint32_t aOffset);
+
+private:
+    XPathNSResolver* mResolver;
+    nsINode* mResolverNode;
+    nsresult mLastError;
+    bool mIsCaseSensitive;
+};
+
+NS_IMPL_ISUPPORTS(XPathEvaluator, nsIDOMXPathEvaluator)
+
+XPathEvaluator::XPathEvaluator(nsIDocument* aDocument)
+    : mDocument(do_GetWeakReference(aDocument))
+{
+}
+
+XPathEvaluator::~XPathEvaluator()
+{
+}
+
+NS_IMETHODIMP
+XPathEvaluator::Evaluate(const nsAString & aExpression,
+                         nsIDOMNode *aContextNode,
+                         nsIDOMNode *aResolver,
+                         uint16_t aType,
+                         nsISupports *aInResult,
+                         nsISupports **aResult)
+{
+    nsCOMPtr<nsINode> resolver = do_QueryInterface(aResolver);
+    ErrorResult rv;
+    nsAutoPtr<XPathExpression> expression(CreateExpression(aExpression,
+                                                           resolver, rv));
+    if (rv.Failed()) {
+        return rv.StealNSResult();
+    }
+
+    nsCOMPtr<nsINode> node = do_QueryInterface(aContextNode);
+    if (!node) {
+        return NS_ERROR_FAILURE;
+    }
+
+    nsCOMPtr<nsIXPathResult> inResult = do_QueryInterface(aInResult);
+    RefPtr<XPathResult> result =
+        expression->Evaluate(*node, aType,
+                             static_cast<XPathResult*>(inResult.get()), rv);
+    if (rv.Failed()) {
+        return rv.StealNSResult();
+    }
+
+    *aResult = ToSupports(result.forget().take());
+
+    return NS_OK;
+}
+
+XPathExpression*
+XPathEvaluator::CreateExpression(const nsAString& aExpression,
+                                 XPathNSResolver* aResolver, ErrorResult& aRv)
+{
+    nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocument);
+    XPathEvaluatorParseContext pContext(aResolver,
+                                        !(doc && doc->IsHTMLDocument()));
+    return CreateExpression(aExpression, &pContext, doc, aRv);
+}
+
+XPathExpression*
+XPathEvaluator::CreateExpression(const nsAString& aExpression,
+                                 nsINode* aResolver, ErrorResult& aRv)
+{
+    nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocument);
+    XPathEvaluatorParseContext pContext(aResolver,
+                                        !(doc && doc->IsHTMLDocument()));
+    return CreateExpression(aExpression, &pContext, doc, aRv);
+}
+
+XPathExpression*
+XPathEvaluator::CreateExpression(const nsAString & aExpression,
+                                 txIParseContext* aContext,
+                                 nsIDocument* aDocument,
+                                 ErrorResult& aRv)
+{
+    if (!mRecycler) {
+        mRecycler = new txResultRecycler;
+    }
+
+    nsAutoPtr<Expr> expression;
+    aRv = txExprParser::createExpr(PromiseFlatString(aExpression), aContext,
+                                   getter_Transfers(expression));
+    if (aRv.Failed()) {
+        if (!aRv.ErrorCodeIs(NS_ERROR_DOM_NAMESPACE_ERR)) {
+            aRv.SuppressException();
+            aRv.Throw(NS_ERROR_DOM_INVALID_EXPRESSION_ERR);
+        }
+
+        return nullptr;
+    }
+
+    return new XPathExpression(Move(expression), mRecycler, aDocument);
+}
+
+bool
+XPathEvaluator::WrapObject(JSContext* aCx,
+                           JS::Handle<JSObject*> aGivenProto,
+                           JS::MutableHandle<JSObject*> aReflector)
+{
+    return dom::XPathEvaluatorBinding::Wrap(aCx, this, aGivenProto, aReflector);
+}
+
+/* static */
+already_AddRefed<XPathEvaluator>
+XPathEvaluator::Constructor(const GlobalObject& aGlobal,
+                            ErrorResult& rv)
+{
+    RefPtr<XPathEvaluator> newObj = new XPathEvaluator(nullptr);
+    return newObj.forget();
+}
+
+already_AddRefed<XPathResult>
+XPathEvaluator::Evaluate(JSContext* aCx, const nsAString& aExpression,
+                         nsINode& aContextNode, XPathNSResolver* aResolver,
+                         uint16_t aType, JS::Handle<JSObject*> aResult,
+                         ErrorResult& rv)
+{
+    nsAutoPtr<XPathExpression> expression(CreateExpression(aExpression,
+                                                           aResolver, rv));
+    if (rv.Failed()) {
+        return nullptr;
+    }
+    return expression->Evaluate(aCx, aContextNode, aType, aResult, rv);
+}
+
+
+/*
+ * Implementation of txIParseContext private to XPathEvaluator, based on a
+ * XPathNSResolver
+ */
+
+nsresult XPathEvaluatorParseContext::resolveNamespacePrefix
+    (nsIAtom* aPrefix, int32_t& aID)
+{
+    aID = kNameSpaceID_Unknown;
+
+    if (!mResolver && !mResolverNode) {
+        return NS_ERROR_DOM_NAMESPACE_ERR;
+    }
+
+    nsAutoString prefix;
+    if (aPrefix) {
+        aPrefix->ToString(prefix);
+    }
+
+    nsVoidableString ns;
+    if (mResolver) {
+        ErrorResult rv;
+        mResolver->LookupNamespaceURI(prefix, ns, rv);
+        if (rv.Failed()) {
+            return rv.StealNSResult();
+        }
+    } else {
+        if (aPrefix == nsGkAtoms::xml) {
+            ns.AssignLiteral("http://www.w3.org/XML/1998/namespace");
+        } else {
+            mResolverNode->LookupNamespaceURI(prefix, ns);
+        }
+    }
+
+    if (DOMStringIsNull(ns)) {
+        return NS_ERROR_DOM_NAMESPACE_ERR;
+    }
+
+    if (ns.IsEmpty()) {
+        aID = kNameSpaceID_None;
+
+        return NS_OK;
+    }
+
+    // get the namespaceID for the URI
+    return nsContentUtils::NameSpaceManager()->RegisterNameSpace(ns, aID);
+}
+
+nsresult
+XPathEvaluatorParseContext::resolveFunctionCall(nsIAtom* aName,
+                                                int32_t aID,
+                                                FunctionCall** aFn)
+{
+    return NS_ERROR_XPATH_UNKNOWN_FUNCTION;
+}
+
+bool XPathEvaluatorParseContext::caseInsensitiveNameTests()
+{
+    return !mIsCaseSensitive;
+}
+
+void
+XPathEvaluatorParseContext::SetErrorOffset(uint32_t aOffset)
+{
+}
+
+} // namespace dom
+} // namespace mozilla