1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
#ifndef CERC_EXPR_H
#define CERC_EXPR_H
#include <stdbool.h>
#include "cmd.h"
#include "lex.h"
#include "type.h"
struct number_e {
struct number value;
struct type *type;
};
struct array_e {
struct cer_array *meta;
struct disjunction_e *elems;
int elemsz, elemlen;
};
struct elseif {
struct disjunction_e *cond;
struct ast_block blk;
};
struct if_e {
struct disjunction_e *cond;
struct ast_block blk;
struct elseif *alts;
struct ast_block *alt;
int altsz, altlen;
};
struct for_e {
struct ast_assign *init, *action;
struct disjunction_e *cond;
struct ast_block blk;
};
enum control {
CTL_IF,
CTL_FOR,
};
struct control_e {
enum control kind;
union {
struct if_e branch;
struct for_e loop;
} ctl;
};
enum literal {
LIT_BOOL,
LIT_STRING,
LIT_NUMBER,
LIT_ARRAY,
};
struct literal_e {
enum literal kind;
union {
bool b;
char *str;
struct number_e num;
struct array_e arr;
} lit;
};
struct location_e {
struct path *path;
struct loc_postfix *subs;
int subsz, sublen;
};
struct assign_e {
struct location_e dst;
struct ast_expr *value;
};
struct call_e {
struct location_e *loc;
struct disjunction_e *args;
int argsz, arglen;
};
enum named {
NMD_ASSIGN,
NMD_CALL,
NMD_LOCATION,
};
struct named_e {
enum named kind;
struct location_e loc;
union {
struct assign_e assign;
struct call_e call;
} nmd;
};
enum primary {
PRM_CONTROL,
PRM_GROUPING,
PRM_LITERAL,
PRM_NAMED,
};
struct primary_e {
enum primary kind;
union {
struct control_e ctl;
struct disjunction_e *grp;
struct literal_e lit;
struct named_e nmd;
} prim;
};
enum unary_postfix {
UPS_NONE,
UPS_DEREF,
UPS_TRY,
UPS_ASSERT,
};
struct unarypost_e {
enum unary_postfix op;
struct primary_e prim;
};
enum unary_prefix {
UPR_NONE,
UPR_NEG,
UPR_INVERT,
UPR_BNEG,
};
struct unarypre_e {
enum unary_prefix op;
struct unarypost_e post;
};
struct bitfactor_e {
struct unarypre_e lhs, *rhs;
int rhssz, rhslen;
};
struct bitsummand_e {
struct bitfactor_e lhs, *rhs;
int rhssz, rhslen;
};
struct bin_e {
struct bitsummand_e lhs, *rhs;
int rhssz, rhslen;
};
enum factor {
FCT_MUL,
FCT_DIV,
FCT_REM,
};
struct factor_rhs {
enum factor factor;
struct bin_e bin;
};
struct factor_e {
struct bin_e lhs;
struct factor_rhs *rhs;
int rhssz, rhslen;
};
enum numeral {
NUM_ADD,
NUM_SUB,
};
struct num_rhs {
enum numeral num;
struct factor_e factor;
};
struct num_e {
struct factor_e lhs;
struct num_rhs *rhs;
int rhssz, rhslen;
};
enum term {
TRM_NUM,
TRM_SHL,
TRM_SHR,
};
struct term_e {
enum term term;
struct num_e lhs, *rhs;
};
enum comparison {
CMP_LT,
CMP_LE,
CMP_GT,
CMP_GE,
};
struct cmp_rhs {
enum comparison cmp;
struct term_e term;
};
struct cmp_e {
struct term_e lhs;
struct cmp_rhs *rhs;
int rhssz, rhslen;
};
struct eq_e {
bool invert;
struct cmp_e lhs, *rhs;
};
enum boolean {
B_EQ,
B_CMP,
};
struct bool_e {
enum boolean kind;
union {
struct eq_e eq;
struct cmp_e cmp;
} cond;
};
struct conjunction_e {
// At least one required
struct bool_e *bools;
int boolsz, boollen;
};
// Entry point
struct disjunction_e {
// At least one required
struct conjunction_e *cons;
int consz, conlen;
};
#endif
|
