1 files changed, 49 insertions, 0 deletions
diff --git a/include/formula/funcvarargs.h b/include/formula/funcvarargs.h
new file mode 100644
index 000000000..7a1f1e4e7
--- /dev/null
+++ b/include/formula/funcvarargs.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ */
+
+#ifndef INCLUDED_FORMULA_FUNCVARARGS_H
+#define INCLUDED_FORMULA_FUNCVARARGS_H
+
+/** Used to indicate a variable number of parameters for the Function Wizard.
+
+    VAR_ARGS if variable number of parameters, or VAR_ARGS+number if number of
+    fixed parameters and variable arguments following.
+
+    @see formula::ParaWin
+    @see ScFuncDescCore
+
+    @NOTE: the value can't be easily changed. If changed then
+    reportdesign/source/ui/misc/FunctionHelper.cxx
+    FunctionDescription::getVarArgsStart() has to provide some backward
+    compatibility for implicit API stability.
+    The new VAR_ARGS value must be significantly greater than the old
+    PAIRED_VAR_ARGS (2*VAR_ARGS) value, in fact greater than any used number of
+    fixed parameters followed by optional paired parameters.
+
+    @NOTE: also
+    reportbuilder/java/org/libreoffice/report/pentaho/StarFunctionDescription.java
+    uses a hard coded value in StarFunctionDescription::getArguments() for
+    functionDescription.isInfiniteParameterCount() which though looks like it
+    could be easily adapted.
+ */
+#define VAR_ARGS 255
+
+/** Used to indicate a variable number of paired parameters for the Function Wizard.
+
+    PAIRED_VAR_ARGS if variable number of paired parameters, or
+    PAIRED_VAR_ARGS+number if number of fixed parameters and variable paired
+    arguments following.
+
+    @see VAR_ARGS
+ */
+#define PAIRED_VAR_ARGS (VAR_ARGS + VAR_ARGS)
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */