|
334
|
1 /*
|
|
|
2 lwexpr.h
|
|
|
3
|
|
|
4 Copyright © 2010 William Astle
|
|
|
5
|
|
|
6 This file is part of LWTOOLS.
|
|
|
7
|
|
|
8 LWTOOLS is free software: you can redistribute it and/or modify it under the
|
|
|
9 terms of the GNU General Public License as published by the Free Software
|
|
|
10 Foundation, either version 3 of the License, or (at your option) any later
|
|
|
11 version.
|
|
|
12
|
|
|
13 This program is distributed in the hope that it will be useful, but WITHOUT
|
|
|
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
|
16 more details.
|
|
|
17
|
|
|
18 You should have received a copy of the GNU General Public License along with
|
|
|
19 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
20 */
|
|
|
21
|
|
|
22 #ifndef ___lw_expr_h_seen___
|
|
|
23 #define ___lw_expr_h_seen___
|
|
|
24
|
|
|
25
|
|
|
26 enum
|
|
|
27 {
|
|
|
28 lw_expr_type_oper, // operator term
|
|
|
29 lw_expr_type_int, // integer
|
|
|
30 lw_expr_type_var, // a "variable" (string for the name)
|
|
|
31 lw_expr_type_special // a "special" reference (user defined)
|
|
|
32 };
|
|
|
33
|
|
|
34 enum
|
|
|
35 {
|
|
|
36 lw_expr_oper_plus = 1, // addition
|
|
|
37 lw_expr_oper_minus, // subtraction
|
|
|
38 lw_expr_oper_times, // multiplication
|
|
|
39 lw_expr_oper_divide, // division
|
|
|
40 lw_expr_oper_mod, // modulus
|
|
|
41 lw_expr_oper_intdiv, // integer division
|
|
|
42 lw_expr_oper_bwand, // bitwise and
|
|
|
43 lw_expr_oper_bwor, // bitwise or
|
|
|
44 lw_expr_oper_bwxor, // bitwise xor
|
|
|
45 lw_expr_oper_and, // boolean and
|
|
|
46 lw_expr_oper_or, // boolean or
|
|
|
47 lw_expr_oper_neg, // unary negation, 2's complement
|
|
|
48 lw_expr_oper_com // unary 1's complement
|
|
|
49 };
|
|
|
50
|
|
|
51 #ifdef ___lw_expr_c_seen___
|
|
|
52
|
|
|
53 typedef struct lw_expr_priv * lw_expr_t;
|
|
|
54
|
|
|
55 struct lw_expr_opers
|
|
|
56 {
|
|
|
57 lw_expr_t p;
|
|
|
58 struct lw_expr_opers *next;
|
|
|
59 };
|
|
|
60
|
|
|
61 struct lw_expr_priv
|
|
|
62 {
|
|
|
63 int type; // type of term
|
|
|
64 int value; // integer value
|
|
|
65 void *value2; // misc pointer value
|
|
|
66 struct lw_expr_opers *operands; // ptr to list of operands (for operators)
|
|
|
67 };
|
|
|
68
|
|
|
69
|
|
|
70 #else /* def ___lw_expr_c_seen___ */
|
|
|
71
|
|
|
72 typedef void * lw_expr_t;
|
|
|
73
|
|
|
74 extern lw_expr_t lwexpr_create(void);
|
|
337
|
75 extern void lw_expr_destroy(lw_expr_t E);
|
|
334
|
76 extern lw_expr_t lw_expr_copy(lw_expr_t E);
|
|
|
77 extern void lw_expr_add_operand(lw_expr_t E, lw_expr_t O);
|
|
|
78 extern lw_expr_t lw_expr_build(int exprtype, ...);
|
|
|
79 extern void lw_expr_print(lw_expr_t E);
|
|
|
80 extern int lw_expr_compare(lw_expr_t E1, lw_expr_t E2);
|
|
335
|
81 extern void lw_expr_simplify(lw_expr_t E);
|
|
337
|
82
|
|
|
83 extern void lw_expr_set_special_handler(lw_expr_t (*fn)(int t, void *ptr));
|
|
|
84 extern void lw_expr_set_var_handler(lw_expr_t (*fn)(char *var));
|
|
334
|
85
|
|
|
86 #endif /* def ___lw_expr_c_seen___ */
|
|
|
87
|
|
|
88 #endif /* ___lw_expr_h_seen___ */
|
