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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/xslt/xpath/txFunctionCall.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/xslt/xpath/txFunctionCall.cpp')
-rw-r--r--dom/xslt/xpath/txFunctionCall.cpp133
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
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+++ 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