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
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
/**
* @file frame_list.cpp
* mainly used to handle preprocessor stuff
*
* @author Ben Gardner
* @license GPL v2+
*/
#include "frame_list.h"
#include "prototypes.h"
namespace
{
void fl_log_frms(log_sev_t logsev, const char *txt, const ParseFrame &frm, const std::vector<ParseFrame> &frames);
//! Logs the entire parse frame stack
void fl_log_all(log_sev_t logsev, const std::vector<ParseFrame> &frames);
/**
* Copy the top element of the frame list into the ParseFrame.
*
* If the frame list is empty nothing happens.
*
* This is called on #else and #elif.
*/
void fl_copy_tos(ParseFrame &pf, const std::vector<ParseFrame> &frames);
/**
* Copy the 2nd top element off the list into the ParseFrame.
* This is called on #else and #elif.
* The stack contains [...] [base] [if] at this point.
* We want to copy [base].
*/
void fl_copy_2nd_tos(ParseFrame &pf, const std::vector<ParseFrame> &frames);
//! Deletes the top element from the list.
void fl_trash_tos(std::vector<ParseFrame> &frames);
//! Logs one parse frame
void fl_log(log_sev_t logsev, const ParseFrame &frm)
{
LOG_FMT(logsev, "[%s] BrLevel=%zu Level=%zu PseTos=%zu\n",
get_token_name(frm.in_ifdef), frm.brace_level, frm.level, frm.size() - 1);
LOG_FMT(logsev, " *");
for (size_t idx = 1; idx < frm.size(); idx++)
{
LOG_FMT(logsev, " [%s-%s]", get_token_name(frm.at(idx).type),
get_brace_stage_name(frm.at(idx).stage));
}
LOG_FMT(logsev, "\n");
}
void fl_log_frms(log_sev_t logsev,
const char *txt,
const ParseFrame &frm,
const std::vector<ParseFrame> &frames)
{
LOG_FMT(logsev, "%s Parse Frames(%zu):", txt, frames.size());
for (size_t idx = 0; idx < frames.size(); idx++)
{
LOG_FMT(logsev, " [%s-%zu]", get_token_name(frames.at(idx).in_ifdef),
frames.at(idx).ref_no);
}
LOG_FMT(logsev, "-[%s-%zu]\n", get_token_name(frm.in_ifdef), frm.ref_no);
}
void fl_log_all(log_sev_t logsev, const std::vector<ParseFrame> &frames)
{
LOG_FMT(logsev, "##=- Parse Frame : %zu entries\n", frames.size());
for (size_t idx = 0; idx < frames.size(); idx++)
{
LOG_FMT(logsev, "## idx is %zu, ", idx);
fl_log(logsev, frames.at(idx));
}
LOG_FMT(logsev, "##=-\n");
}
void fl_copy_tos(ParseFrame &pf, const std::vector<ParseFrame> &frames)
{
if (!frames.empty())
{
pf = *std::prev(std::end(frames));
}
LOG_FMT(LPF, "%s(%d): frame_count is %zu\n", __func__, __LINE__, frames.size());
}
void fl_copy_2nd_tos(ParseFrame &pf, const std::vector<ParseFrame> &frames)
{
if (frames.size() > 1)
{
pf = *std::prev(std::end(frames), 2);
}
LOG_FMT(LPF, "%s(%d): frame_count is %zu\n", __func__, __LINE__, frames.size());
}
void fl_trash_tos(std::vector<ParseFrame> &frames)
{
if (!frames.empty())
{
frames.pop_back();
}
LOG_FMT(LPF, "%s(%d): frame_count is %zu\n", __func__, __LINE__, frames.size());
}
} // namespace
void fl_push(std::vector<ParseFrame> &frames, ParseFrame &frm)
{
static int ref_no = 1;
frames.push_back(frm);
frm.ref_no = ref_no++;
LOG_FMT(LPF, "%s(%d): frame_count is %zu\n", __func__, __LINE__, frames.size());
}
void fl_pop(std::vector<ParseFrame> &frames, ParseFrame &pf)
{
if (frames.empty())
{
return;
}
fl_copy_tos(pf, frames);
fl_trash_tos(frames);
}
int fl_check(std::vector<ParseFrame> &frames, ParseFrame &frm, int &pp_level, chunk_t *pc)
{
if (pc->type != CT_PREPROC)
{
return(pp_level);
}
chunk_t *next = chunk_get_next(pc);
if (next == nullptr)
{
return(pp_level);
}
if (get_chunk_parent_type(pc) != next->type)
{
LOG_FMT(LNOTE, "%s(%d): Preproc parent not set correctly on orig_line %zu: got %s expected %s\n",
__func__, __LINE__, pc->orig_line, get_token_name(get_chunk_parent_type(pc)),
get_token_name(next->type));
set_chunk_parent(pc, next->type);
}
LOG_FMT(LPFCHK, "%s(%d): orig_line is %zu, %s\n",
__func__, __LINE__, pc->orig_line, get_token_name(get_chunk_parent_type(pc)));
fl_log_frms(LPFCHK, "TOP", frm, frames);
int out_pp_level = pp_level;
const c_token_t in_ifdef = frm.in_ifdef;
const size_t b4_cnt = frames.size();
const char *txt = nullptr;
if (pc->flags.test(PCF_IN_PREPROC))
{
LOG_FMT(LPF, " <In> ");
fl_log(LPF, frm);
if (get_chunk_parent_type(pc) == CT_PP_IF)
{
// An #if pushes a copy of the current frame on the stack
pp_level++;
fl_push(frames, frm);
frm.in_ifdef = CT_PP_IF;
txt = "if-push";
}
else if (get_chunk_parent_type(pc) == CT_PP_ELSE)
{
if (out_pp_level == 0)
{
fprintf(stderr, "%s(%d): pp_level is ZERO, cannot be decremented, at line %zu, column %zu\n",
__func__, __LINE__, pc->orig_line, pc->orig_col);
log_flush(true);
exit(EX_SOFTWARE);
}
out_pp_level--;
/*
* For #else of #elif, we want to keep the #if part and throw out the
* else parts.
* We check to see what the top type is to see if we just push or
* pop and then push.
* We need to use the copy right before the if.
*/
if (frm.in_ifdef == CT_PP_IF)
{
// we have [...] [base]-[if], so push an [else]
fl_push(frames, frm);
frm.in_ifdef = CT_PP_ELSE;
}
// we have [...] [base] [if]-[else], copy [base] over [else]
fl_copy_2nd_tos(frm, frames);
frm.in_ifdef = CT_PP_ELSE;
txt = "else-push";
}
else if (get_chunk_parent_type(pc) == CT_PP_ENDIF)
{
/*
* we may have [...] [base] [if]-[else] or [...] [base]-[if].
* Throw out the [else].
*/
if (pp_level == 0)
{
// cpd.pp_level is ZERO, cannot be decremented.
fprintf(stderr, "%s(%d): #endif found, at line %zu, column %zu, without corresponding #if\n",
__func__, __LINE__, pc->orig_line, pc->orig_col);
log_flush(true);
exit(EX_SOFTWARE);
}
pp_level--;
if (out_pp_level == 0)
{
fprintf(stderr, "%s(%d): pp_level is ZERO, cannot be decremented, at line %zu, column %zu\n",
__func__, __LINE__, pc->orig_line, pc->orig_col);
log_flush(true);
exit(EX_SOFTWARE);
}
out_pp_level--;
if (frm.in_ifdef == CT_PP_ELSE)
{
/*
* We have: [...] [base] [if]-[else]
* We want: [...]-[if]
*/
fl_copy_tos(frm, frames); // [...] [base] [if]-[if]
if (frames.size() < 2)
{
fprintf(stderr, "Number of 'frame' is too small.\n");
fprintf(stderr, "Please make a report.\n");
log_flush(true);
exit(EX_SOFTWARE);
}
frm.in_ifdef = frames[frames.size() - 2].in_ifdef;
fl_trash_tos(frames); // [...] [base]-[if]
fl_trash_tos(frames); // [...]-[if]
txt = "endif-trash/pop";
}
else if (frm.in_ifdef == CT_PP_IF)
{
/*
* We have: [...] [base] [if]
* We want: [...] [base]
*/
fl_pop(frames, frm);
txt = "endif-pop";
}
else
{
txt = "???";
}
}
}
if (txt != nullptr)
{
LOG_FMT(LPF, "%s(%d): orig_line is %zu, type is %s: %s in_ifdef is %s/%s, counts is %zu, frame_count is %zu\n",
__func__, __LINE__, pc->orig_line,
get_token_name(get_chunk_parent_type(pc)), txt, get_token_name(in_ifdef),
get_token_name(frm.in_ifdef), b4_cnt, frames.size());
fl_log_all(LPF, frames);
LOG_FMT(LPF, " <Out>");
fl_log(LPF, frm);
}
fl_log_frms(LPFCHK, "END", frm, frames);
return(out_pp_level);
} // fl_check
|
