1 files changed, 57 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.10/src/Calculator.h b/Build/source/texk/dvisvgm/dvisvgm-1.10/src/Calculator.h
new file mode 100644
index 00000000000..76b07e40a60
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+++ b/Build/source/texk/dvisvgm/dvisvgm-1.10/src/Calculator.h
@@ -0,0 +1,57 @@
+/*************************************************************************
+** Calculator.h                                                         **
+**                                                                      **
+** This file is part of dvisvgm -- the DVI to SVG converter             **
+** Copyright (C) 2005-2015 Martin Gieseking <martin.gieseking@uos.de>   **
+**                                                                      **
+** This program is free software; you can redistribute it and/or        **
+** modify it under the terms of the GNU General Public License as       **
+** published by the Free Software Foundation; either version 3 of       **
+** the License, or (at your option) any later version.                  **
+**                                                                      **
+** This program is distributed in the hope that it will be useful, but  **
+** WITHOUT ANY WARRANTY; without even the implied warranty of           **
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         **
+** GNU General Public License for more details.                         **
+**                                                                      **
+** You should have received a copy of the GNU General Public License    **
+** along with this program; if not, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#ifndef DVISVGM_CALCULATOR_H
+#define DVISVGM_CALCULATOR_H
+
+#include <istream>
+#include <map>
+#include <string>
+#include "MessageException.h"
+
+
+struct CalculatorException : public MessageException
+{
+	CalculatorException (const std::string &msg) : MessageException(msg) {}
+};
+
+class Calculator
+{
+	public:
+		Calculator () : _numValue(0) {}
+		double eval (std::istream &is);
+		double eval (const std::string &expr);
+		void setVariable (const std::string &name, double value) {_variables[name] = value;}
+		double getVariable (const std::string &name) const;
+
+	protected:
+		double expr (std::istream &is, bool skip);
+		double term (std::istream &is, bool skip);
+		double prim (std::istream &is, bool skip);
+		char lex (std::istream &is);
+		char lookAhead (std::istream &is);
+
+	private:
+		std::map<std::string,double> _variables;
+		double _numValue;
+		std::string _strValue;
+};
+
+#endif