STORM-1315 Ability to do simple math in numeric edit fields

1 files changed, 46 insertions, 0 deletions

diff --git a/indra/llmath/llcalcparser.cpp b/indra/llmath/llcalcparser.cpp
new file mode 100644
index 0000000000..fd55376fa9
--- /dev/null
+++ b/indra/llmath/llcalcparser.cpp
@@ -0,0 +1,46 @@
+/*
+ *  LLCalcParser.cpp
+ *  SecondLife
+ *
+ *  Created by Aimee Walton on 28/09/2008.
+ *  Copyright 2008 Aimee Walton.
+ *
+ */
+
+#include "linden_common.h"
+
+#include "llcalcparser.h"
+using namespace boost::spirit::classic;
+
+F32 LLCalcParser::lookup(const std::string::iterator& start, const std::string::iterator& end) const
+{
+	LLCalc::calc_map_t::iterator iter;
+
+	std::string name(start, end);
+	
+	if (mConstants)
+	{
+		iter = mConstants->find(name);
+		if (iter != mConstants->end())
+		{
+			return (*iter).second;
+		}
+	}
+	else
+	{
+		// This should never happen!
+		throw_(end, std::string("Missing constants table"));
+	}
+	
+	if (mVariables)
+	{
+		iter = mVariables->find(name);
+		if (iter != mVariables->end())
+		{
+			return (*iter).second;
+		}
+	}
+	
+	throw_(end, std::string("Unknown symbol " + name));
+	return 0.f;
+}