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
|
/*
* Copyright © 2024 Michael Smith <mikesmiffy128@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../intdefs.h"
#include "../kv.h"
#include "../noreturn.h"
#include "../os.h"
#include "skiplist.h"
#include "vec.h"
#ifdef _WIN32
#define fS "S"
#else
#define fS "s"
#endif
static noreturn die(const char *s) {
fprintf(stderr, "mkentprops: %s\n", s);
exit(100);
}
struct prop {
const char *varname; /* the C global name */
const char *propname; /* the entity property name */
struct prop *next;
};
struct vec_prop VEC(struct prop *);
DECL_SKIPLIST(static, class, struct class, const char *, 4)
struct class {
const char *name; /* the entity class name */
struct vec_prop props;
struct skiplist_hdr_class hdr;
};
static inline int cmp_class(struct class *c, const char *s) {
return strcmp(c->name, s);
}
static inline struct skiplist_hdr_class *hdr_class(struct class *c) {
return &c->hdr;
}
DEF_SKIPLIST(static, class, cmp_class, hdr_class)
static struct skiplist_hdr_class classes = {0};
static int nclasses = 0;
struct parsestate {
const os_char *filename;
struct kv_parser *parser;
char *lastvar;
};
static noreturn badparse(struct parsestate *state, const char *e) {
fprintf(stderr, "mkentprops: %" fS ":%d:%d: parse error: %s",
state->filename, state->parser->line, state->parser->col, e);
exit(1);
}
static void kv_cb(enum kv_token type, const char *p, uint len, void *ctxt) {
struct parsestate *state = ctxt;
switch (type) {
case KV_IDENT: case KV_IDENT_QUOTED:
state->lastvar = malloc(len + 1);
if (!state->lastvar) die("couldn't allocate memory");
memcpy(state->lastvar, p, len); state->lastvar[len] = '\0';
break;
case KV_NEST_START: badparse(state, "unexpected nested block");
case KV_NEST_END: badparse(state, "unexpected closing brace");
case KV_VAL: case KV_VAL_QUOTED:;
struct prop *prop = malloc(sizeof(*prop));
if (!prop) die("couldn't allocate memory");
prop->varname = state->lastvar;
char *classname = malloc(len + 1);
if (!classname) die("couldn't allocate memory");
memcpy(classname, p, len); classname[len] = '\0';
char *propname = strchr(classname, '/');
if (!propname) {
badparse(state, "network name not in class/prop format");
}
*propname = '\0'; ++propname; // split!
prop->propname = propname;
struct class *class = skiplist_get_class(&classes, classname);
if (!class) {
class = malloc(sizeof(*class));
if (!class) die("couldn't allocate memory");
*class = (struct class){.name = classname};
skiplist_insert_class(&classes, classname, class);
++nclasses;
}
// (if class is already there just leak classname, no point freeing)
if (!vec_push(&class->props, prop)) die("couldn't append to array");
break;
case KV_COND_PREFIX: case KV_COND_SUFFIX:
badparse(state, "unexpected conditional");
}
}
static inline noreturn diewrite(void) { die("couldn't write to file"); }
#define _(x) \
if (fprintf(out, "%s\n", x) < 0) diewrite();
#define F(f, ...) \
if (fprintf(out, f "\n", __VA_ARGS__) < 0) diewrite();
#define H() \
_( "/* This file is autogenerated by src/build/mkentprops.c. DO NOT EDIT! */") \
_( "")
static void decls(FILE *out) {
for (struct class *c = classes.x[0]; c; c = c->hdr.x[0]) {
for (struct prop **pp = c->props.data;
pp - c->props.data < c->props.sz; ++pp) {
F( "extern bool has_%s;", (*pp)->varname)
F( "extern int %s;", (*pp)->varname)
}
}
}
static void defs(FILE *out) {
for (struct class *c = classes.x[0]; c; c = c->hdr.x[0]) {
for (struct prop **pp = c->props.data;
pp - c->props.data < c->props.sz; ++pp) {
F( "bool has_%s = false;", (*pp)->varname)
F( "int %s;", (*pp)->varname)
}
}
_( "")
_( "static void initentprops(struct ServerClass *class) {")
F( " for (int needclasses = %d; class; class = class->next) {", nclasses)
char *else1 = "";
for (struct class *c = classes.x[0]; c; c = c->hdr.x[0]) {
// TODO(opt): some sort of PHF or trie instead of chained strcmp, if we
// ever have more than a few classes/properties?
F( " %sif (!strcmp(class->name, \"%s\")) {", else1, c->name)
_( " struct SendTable *st = class->table;")
F( " int needprops = %d;", c->props.sz)
_( " for (struct SendProp *p = st->props;")
_( " mem_diff(p, st->props) < st->nprops * sz_SendProp;")
_( " p = mem_offset(p, sz_SendProp)) {")
_( " const char *varname = mem_loadptr(mem_offset(p, off_SP_varname));")
char *else2 = "";
for (struct prop **pp = c->props.data;
pp - c->props.data < c->props.sz; ++pp) {
F( " %sif (!strcmp(varname, \"%s\")) {", else2, (*pp)->propname)
F( " has_%s = true;", (*pp)->varname)
F( " %s = mem_loads32(mem_offset(p, off_SP_offset));",
(*pp)->varname)
_( " if (!--needprops) break;")
_( " }")
else2 = "else ";
}
_( " }")
_( " if (!--needclasses) break;")
_( " }")
else1 = "else ";
}
_( " }")
_( "}")
}
int OS_MAIN(int argc, os_char *argv[]) {
for (++argv; *argv; ++argv) {
int f = os_open_read(*argv);
if (f == -1) die("couldn't open file");
struct kv_parser kv = {0};
struct parsestate state = {*argv, &kv};
char buf[1024];
int nread;
while (nread = os_read(f, buf, sizeof(buf))) {
if (nread == -1) die("couldn't read file");
if (!kv_parser_feed(&kv, buf, nread, &kv_cb, &state)) goto ep;
}
if (!kv_parser_done(&kv)) {
ep: fprintf(stderr, "mkentprops: %" fS ":%d:%d: bad syntax: %s\n",
*argv, kv.line, kv.col, kv.errmsg);
exit(1);
}
os_close(f);
}
FILE *out = fopen(".build/include/entprops.gen.h", "wb");
if (!out) die("couldn't open entprops.gen.h");
H();
decls(out);
out = fopen(".build/include/entpropsinit.gen.h", "wb");
if (!out) die("couldn't open entpropsinit.gen.h");
H();
defs(out);
return 0;
}
// vi: sw=4 ts=4 noet tw=80 cc=80
|
