1/* Copyright (c) 2012 Massachusetts Institute of Technology
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19 * THE SOFTWARE.
20 */
21
22#ifndef __LIBUTIL_CALCULATOR_H__
23#define __LIBUTIL_CALCULATOR_H__
24
25#include <sstream>
26
27#include "model/Model.h"
28#include "String.h"
29#include "Map.h"
30#include "Assert.h"
31
32namespace LibUtil
33{
34 using std::istringstream;
35 using std::ostringstream;
36
37 /*
38 * program:
39 * END // END is end-of-input
40 * expr_list END
41 *
42 * expr_list:
43 * expression SEP expr_list // SEP is semicolon

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81 };
82
83 public:
84 Calculator();
85 virtual ~Calculator();
86
87 public:
88 void reset();
89 void evaluateString(const String& str_,
90 const std::map<String, String> &config,
91 DSENT::Model *ms_model,
92 std::map<std::string, double> &outputs);
93
94 protected:
95 Token getToken(istringstream& ist_);
96
97 double prim(istringstream& ist_, bool is_get_,
98 const std::map<String, String> &config,
99 DSENT::Model *ms_model);
100
101 double term(istringstream& ist_, bool is_get_,
102 const std::map<String, String> &config,
103 DSENT::Model *ms_model);
104
105 double expr(istringstream& ist_, bool is_get_,
106 const std::map<String, String> &config,
107 DSENT::Model *ms_model);
108
109 virtual double getEnvVar(
110 const String& var_name_,
111 const std::map<String, String> &config,
112 DSENT::Model *ms_model) const;
113
114 protected:
115 String m_reserved_chars_;
116 Map<double> m_var_;
117
118 Token m_curr_token_;
119 double m_value_number_;
120 String m_value_string_;
121 };
122} // namespace LibUtil
123
124#endif // __LIBUTIL_CALCULATOR_H__
125