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
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#include <stdlib.h>
#include <string.h>
#include "llpkgc.h"
#define CALLBACK_MAYBE(PARSER, NAME) \
do { \
const llpkgc_settings_t* settings; \
settings = (const llpkgc_settings_t*) (PARSER)->settings; \
if(settings == NULL || settings->NAME == NULL) { \
err = 0; \
break; \
} \
err = settings->NAME((PARSER)); \
} while(0)
#define SPAN_CALLBACK_MAYBE(PARSER, NAME, START, LEN) \
do { \
const llpkgc_settings_t* settings; \
settings = (const llpkgc_settings_t*) (PARSER)->settings; \
if(settings == NULL || settings->NAME == NULL) { \
err = 0; \
break; \
} \
err = settings->NAME((PARSER), (START), (LEN)); \
if(err == -1) { \
err = PCE_USER; \
llpkgc_set_error_reason((PARSER), "Span callback error in " #NAME); \
} \
} while(0)
void llpkgc_init(llpkgc_t* parser, const llpkgc_settings_t* settings) {
llpkgc__internal_init(parser);
parser->settings = (void*) settings;
}
void llpkgc_reset(llpkgc_t* parser) {
llpkgc_settings_t* settings = parser->settings;
void* data = parser->data;
llpkgc__internal_init(parser);
parser->settings = settings;
parser->data = data;
}
void llpkgc_settings_init(llpkgc_settings_t* settings) {
memset(settings, 0, sizeof(*settings));
}
llpkgc_errno_t llpkgc_execute(llpkgc_t* parser, const char* data, size_t len) {
return llpkgc__internal_execute(parser, data, data + len);
}
llpkgc_errno_t llpkgc_finish(llpkgc_t* parser) {
if(parser->error != 0)
return parser->error;
int err;
// ToDo: Better handling of user callback errors here
if(parser->unfinished_ == 1) {
parser->reason = "Invalid EOF state";
parser->error = PCE_UNFINISHED;
return PCE_UNFINISHED;
} else if(parser->unfinished_ == 2) {
CALLBACK_MAYBE(parser, on_value_literal_complete);
if(err != PCE_OK) {
parser->error = err;
return err;
}
CALLBACK_MAYBE(parser, on_value_complete);
if(err != PCE_OK) {
parser->error = err;
return err;
}
} else if(parser->unfinished_ == 3) {
CALLBACK_MAYBE(parser, on_value_complete);
if(err != PCE_OK) {
parser->error = err;
return err;
}
}
CALLBACK_MAYBE(parser, on_pkgc_complete);
return err;
}
void llpkgc_pause(llpkgc_t* parser) {
if(parser->error != PCE_OK) {
return;
}
parser->error = PCE_PAUSED;
parser->reason = "Paused";
}
void llpkgc_resume(llpkgc_t* parser) {
if(parser->error != PCE_PAUSED) {
return;
}
parser->error = 0;
}
llpkgc_errno_t llpkgc_get_errno(const llpkgc_t* parser) {
return parser->error;
}
const char* llpkgc_get_error_reason(const llpkgc_t* parser) {
return parser->reason;
}
void llpkgc_set_error_reason(llpkgc_t* parser, const char* reason) {
parser->reason = reason;
}
const char* llpkgc_get_error_pos(const llpkgc_t* parser) {
return parser->error_pos;
}
const char* llpkgc_errno_name(llpkgc_errno_t err) {
switch(err) {
case PCE_OK:
return "PCE_OK";
case PCE_INTERNAL:
return "PCE_INTERNAL";
case PCE_PAUSED:
return "PCE_PAUSED";
case PCE_USER:
return "PCE_USER";
case PCE_UNFINISHED:
return "PCE_UNFINISHED";
}
return "INVALID_ERRNO";
}
int llpkgc__line_begin(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 1;
CALLBACK_MAYBE(s, on_line_begin);
return err;
}
int llpkgc__key_span(llpkgc_t* s, const char* p, const char* endp) {
int err;
SPAN_CALLBACK_MAYBE(s, on_key, p, endp - p);
return err;
}
int llpkgc__keyword_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_keyword_complete);
return err;
}
int llpkgc__variable_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_variable_complete);
return err;
}
int llpkgc__vallit_span(llpkgc_t* s, const char* p, const char* endp) {
int err;
if(s->escaped_) {
--endp;
s->escaped_ = 0;
}
s->unfinished_ = 2;
SPAN_CALLBACK_MAYBE(s, on_value_literal, p, endp - p);
return err;
}
int llpkgc__vallit_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_value_literal_complete);
return err;
}
int llpkgc__valvar_span(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 1;
SPAN_CALLBACK_MAYBE(s, on_value_variable, p, endp - p);
return err;
}
int llpkgc__valvar_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 3;
CALLBACK_MAYBE(s, on_value_variable_complete);
return err;
}
int llpkgc__value_complete(llpkgc_t* s, const char* p, const char* endp) {
int err;
s->unfinished_ = 0;
CALLBACK_MAYBE(s, on_value_complete);
return err;
}
|
