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comparison boost-spirit/CALC/closure2/EUC/node.cpp @ 0:db40c85cad7a default tip

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author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Mon, 09 May 2011 03:11:59 +0900
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-1:000000000000 0:db40c85cad7a
1 #include <iostream>
2 #include "node.h"
3
4 int cnode::expr(std::map<std::string, int> &values) const
5 {
6 switch (op_) {
7 case OP_NEG:
8 return -left_->expr(values);
9
10 case OP_PLUS:
11 return left_->expr(values) + right_->expr(values);
12
13 case OP_MINUS:
14 return left_->expr(values) - right_->expr(values);
15
16 case OP_TIMES:
17 return left_->expr(values) * right_->expr(values);
18
19 case OP_DIVIDE:
20 return left_->expr(values) / right_->expr(values);
21
22 case OP_NUMBER:
23 return number_;
24
25 case OP_IDENT:
26 return values[string_];
27
28 default:
29 return 0; // error
30 }
31 }