1 files changed, 133 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txFunctionCall.cpp b/dom/xslt/xpath/txFunctionCall.cpp
new file mode 100644
index 000000000..aa8f51fc7
--- /dev/null
+++ b/dom/xslt/xpath/txFunctionCall.cpp
@@ -0,0 +1,133 @@
+/* -*- 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 "txExpr.h"
+#include "nsIAtom.h"
+#include "txIXPathContext.h"
+#include "txNodeSet.h"
+
+/**
+ * This class represents a FunctionCall as defined by the XSL Working Draft
+**/
+
+  //------------------/
+ //- Public Methods -/
+//------------------/
+
+/*
+ * Evaluates the given Expression and converts its result to a number.
+ */
+// static
+nsresult
+FunctionCall::evaluateToNumber(Expr* aExpr, txIEvalContext* aContext,
+                               double* aResult)
+{
+    NS_ASSERTION(aExpr, "missing expression");
+    RefPtr<txAExprResult> exprResult;
+    nsresult rv = aExpr->evaluate(aContext, getter_AddRefs(exprResult));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    *aResult = exprResult->numberValue();
+
+    return NS_OK;
+}
+
+/*
+ * Evaluates the given Expression and converts its result to a NodeSet.
+ * If the result is not a NodeSet nullptr is returned.
+ */
+nsresult
+FunctionCall::evaluateToNodeSet(Expr* aExpr, txIEvalContext* aContext,
+                                txNodeSet** aResult)
+{
+    NS_ASSERTION(aExpr, "Missing expression to evaluate");
+    *aResult = nullptr;
+
+    RefPtr<txAExprResult> exprRes;
+    nsresult rv = aExpr->evaluate(aContext, getter_AddRefs(exprRes));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (exprRes->getResultType() != txAExprResult::NODESET) {
+        aContext->receiveError(NS_LITERAL_STRING("NodeSet expected as argument"), NS_ERROR_XSLT_NODESET_EXPECTED);
+        return NS_ERROR_XSLT_NODESET_EXPECTED;
+    }
+
+    *aResult =
+        static_cast<txNodeSet*>(static_cast<txAExprResult*>(exprRes));
+    NS_ADDREF(*aResult);
+
+    return NS_OK;
+}
+
+bool FunctionCall::requireParams(int32_t aParamCountMin,
+                                   int32_t aParamCountMax,
+                                   txIEvalContext* aContext)
+{
+    int32_t argc = mParams.Length();
+    if (argc < aParamCountMin ||
+        (aParamCountMax > -1 && argc > aParamCountMax)) {
+        nsAutoString err(NS_LITERAL_STRING("invalid number of parameters for function"));
+#ifdef TX_TO_STRING
+        err.AppendLiteral(": ");
+        toString(err);
+#endif
+        aContext->receiveError(err, NS_ERROR_XPATH_INVALID_ARG);
+
+        return false;
+    }
+
+    return true;
+}
+
+Expr*
+FunctionCall::getSubExprAt(uint32_t aPos)
+{
+    return mParams.SafeElementAt(aPos);
+}
+
+void
+FunctionCall::setSubExprAt(uint32_t aPos, Expr* aExpr)
+{
+    NS_ASSERTION(aPos < mParams.Length(),
+                 "setting bad subexpression index");
+    mParams[aPos] = aExpr;
+}
+
+bool
+FunctionCall::argsSensitiveTo(ContextSensitivity aContext)
+{
+    uint32_t i, len = mParams.Length();
+    for (i = 0; i < len; ++i) {
+        if (mParams[i]->isSensitiveTo(aContext)) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+#ifdef TX_TO_STRING
+void
+FunctionCall::toString(nsAString& aDest)
+{
+    nsCOMPtr<nsIAtom> functionNameAtom;
+    if (NS_FAILED(getNameAtom(getter_AddRefs(functionNameAtom)))) {
+        NS_ERROR("Can't get function name.");
+        return;
+    }
+
+
+
+    aDest.Append(nsDependentAtomString(functionNameAtom) +
+                 NS_LITERAL_STRING("("));
+    for (uint32_t i = 0; i < mParams.Length(); ++i) {
+        if (i != 0) {
+            aDest.Append(char16_t(','));
+        }
+        mParams[i]->toString(aDest);
+    }
+    aDest.Append(char16_t(')'));
+}
+#endif