1 files changed, 114 insertions, 0 deletions
diff --git a/dom/xslt/xslt/txGenerateIdFunctionCall.cpp b/dom/xslt/xslt/txGenerateIdFunctionCall.cpp
new file mode 100644
index 000000000..e02090745
--- /dev/null
+++ b/dom/xslt/xslt/txGenerateIdFunctionCall.cpp
@@ -0,0 +1,114 @@
+/* -*- 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 "nsGkAtoms.h"
+#include "txIXPathContext.h"
+#include "txNodeSet.h"
+#include "txXPathTreeWalker.h"
+#include "txXSLTFunctions.h"
+#include "txExecutionState.h"
+
+/*
+  Implementation of XSLT 1.0 extension function: generate-id
+*/
+
+/**
+ * Creates a new generate-id function call
+**/
+GenerateIdFunctionCall::GenerateIdFunctionCall()
+{
+}
+
+/**
+ * Evaluates this Expr based on the given context node and processor state
+ * @param context the context node for evaluation of this Expr
+ * @param ps the ContextState containing the stack information needed
+ * for evaluation
+ * @return the result of the evaluation
+ * @see FunctionCall.h
+**/
+nsresult
+GenerateIdFunctionCall::evaluate(txIEvalContext* aContext,
+                                 txAExprResult** aResult)
+{
+    *aResult = nullptr;
+    if (!requireParams(0, 1, aContext))
+        return NS_ERROR_XPATH_BAD_ARGUMENT_COUNT;
+
+    txExecutionState* es = 
+        static_cast<txExecutionState*>(aContext->getPrivateContext());
+    if (!es) {
+        NS_ERROR(
+            "called xslt extension function \"generate-id\" with wrong context");
+        return NS_ERROR_UNEXPECTED;
+    }
+
+    nsresult rv = NS_OK;
+    if (mParams.IsEmpty()) {
+        StringResult* strRes;
+        rv = aContext->recycler()->getStringResult(&strRes);
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        txXPathNodeUtils::getXSLTId(aContext->getContextNode(),
+                                    es->getSourceDocument(),
+                                    strRes->mValue);
+
+        *aResult = strRes;
+ 
+        return NS_OK;
+    }
+
+    RefPtr<txNodeSet> nodes;
+    rv = evaluateToNodeSet(mParams[0], aContext,
+                           getter_AddRefs(nodes));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (nodes->isEmpty()) {
+        aContext->recycler()->getEmptyStringResult(aResult);
+
+        return NS_OK;
+    }
+    
+    StringResult* strRes;
+    rv = aContext->recycler()->getStringResult(&strRes);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    txXPathNodeUtils::getXSLTId(nodes->get(0), es->getSourceDocument(),
+                                strRes->mValue);
+
+    *aResult = strRes;
+ 
+    return NS_OK;
+}
+
+Expr::ResultType
+GenerateIdFunctionCall::getReturnType()
+{
+    return STRING_RESULT;
+}
+
+bool
+GenerateIdFunctionCall::isSensitiveTo(ContextSensitivity aContext)
+{
+    if (aContext & PRIVATE_CONTEXT) {
+        return true;
+    }
+
+    if (mParams.IsEmpty()) {
+        return !!(aContext & NODE_CONTEXT);
+    }
+
+    return argsSensitiveTo(aContext);
+}
+
+#ifdef TX_TO_STRING
+nsresult
+GenerateIdFunctionCall::getNameAtom(nsIAtom** aAtom)
+{
+    *aAtom = nsGkAtoms::generateId;
+    NS_ADDREF(*aAtom);
+    return NS_OK;
+}
+#endif