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comparison Bison-Flex/CALC/discrete-parser/EUC/node.h @ 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 //
2 // ノードクラス
3 //
4 // Chihiro.SAKAMOTO
5 //
6 #ifndef __NODE_H__
7 #define __NODE_H__
8
9 #include <string>
10
11 // ノードの命令・トークン種別
12 enum {
13 OP_EOF = -1,
14 OP_NEG,
15 OP_PLUS,
16 OP_MINUS,
17 OP_TIMES,
18 OP_DIVIDE,
19 OP_VALUE,
20 OP_CONST,
21 OP_OPAR,
22 OP_CPAR,
23 OP_EQU,
24 OP_NEWLINE,
25 OP_PRINT,
26 OP_LIST,
27 OP_ERROR,
28 } ;
29
30 // ノード
31
32 class calc_driver;
33 class cnode {
34 public:
35 cnode(int op, cnode *left, cnode *right=0)
36 : op_(op), left_(left), right_(right), value_(0), string_(0)
37 {
38 }
39 cnode(int op, int value)
40 : op_(op), left_(0), right_(0), value_(value), string_(0)
41 {
42 }
43 cnode(int op, std::string *str)
44 : op_(op), left_(0), right_(0), value_(0), string_(str)
45 {
46 }
47 virtual ~cnode()
48 {
49 delete left_;
50 delete right_;
51 delete string_;
52 }
53
54 int expr(calc_driver *driver) const;
55
56 int op() const { return op_; }
57 int value() const { return value_; }
58 const std::string &string() const { return *string_; }
59 const cnode *left() const { return left_; }
60 const cnode *right() const { return right_; }
61
62 protected:
63 int op_;
64 int value_;
65 std::string *string_;
66 cnode *left_;
67 cnode *right_;
68 } ;
69
70 #endif