2df4854b47e4dfa8c598c48c2d137713577266d4
1 /*******************************************************************************
2 Copyright (c) 2017, Michael Wallner <mike@php.net>.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
8 * Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
14 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
18 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *******************************************************************************/
26 #include "php_psi_stdinc.h"
33 struct psi_cpp_exp
*psi_cpp_exp_init(token_t type
, void *data
)
35 struct psi_cpp_exp
*exp
= calloc(1, sizeof(*exp
));
37 switch ((exp
->type
= type
)) {
45 case PSI_T_INCLUDE_NEXT
:
49 exp
->data
.decl
= data
;
57 case PSI_T_PRAGMA_ONCE
:
67 void psi_cpp_exp_free(struct psi_cpp_exp
**exp_ptr
)
70 struct psi_cpp_exp
*exp
= *exp_ptr
;
85 case PSI_T_INCLUDE_NEXT
:
86 psi_token_free(&exp
->data
.tok
);
89 psi_cpp_macro_decl_free(&exp
->data
.decl
);
93 psi_num_exp_free(&exp
->data
.num
);
97 case PSI_T_PRAGMA_ONCE
:
103 psi_token_free(&exp
->token
);
108 void psi_cpp_exp_dump(int fd
, struct psi_cpp_exp
*exp
)
110 dprintf(fd
, "#%s ", exp
->token
->text
->val
);
114 if (!exp
->data
.tok
) {
121 dprintf(fd
, "%s", exp
->data
.tok
->text
->val
);
125 case PSI_T_INCLUDE_NEXT
:
126 if (exp
->data
.tok
->type
== PSI_T_CPP_HEADER
) {
127 dprintf(fd
, "<%s>", exp
->data
.tok
->text
->val
);
129 dprintf(fd
, "\"%s\"", exp
->data
.tok
->text
->val
);
133 psi_cpp_macro_decl_dump(fd
, exp
->data
.decl
);
137 psi_num_exp_dump(fd
, exp
->data
.num
);
141 case PSI_T_PRAGMA_ONCE
:
151 static inline bool psi_cpp_level_skipped(struct psi_cpp
*cpp
)
153 return cpp
->skip
== cpp
->level
;
156 static inline void psi_cpp_level_skip(struct psi_cpp
*cpp
)
159 cpp
->skip
= cpp
->level
;
162 static inline void psi_cpp_level_unskip(struct psi_cpp
*cpp
)
164 if (psi_cpp_level_skipped(cpp
)) {
169 static inline bool psi_cpp_level_masked(struct psi_cpp
*cpp
)
171 return cpp
->seen
& (1 << cpp
->level
);
174 static inline void psi_cpp_level_mask(struct psi_cpp
*cpp
)
176 assert(!psi_cpp_level_masked(cpp
));
177 cpp
->seen
|= (1 << cpp
->level
);
180 static inline void psi_cpp_level_unmask(struct psi_cpp
*cpp
)
182 cpp
->seen
&= ~(1 << cpp
->level
);
185 void psi_cpp_exp_exec(struct psi_cpp_exp
*exp
, struct psi_cpp
*cpp
, struct psi_data
*D
)
187 PSI_DEBUG_PRINT(D
, "PSI: CPP EVAL < %s (level=%u, skip=%u)\n",
188 exp
->token
->text
->val
, cpp
->level
, cpp
->skip
);
191 psi_cpp_exp_dump(2, exp
);
197 D
->error(D
, exp
->token
, PSI_ERROR
, "%s",
198 exp
->data
.tok
? exp
->data
.tok
->text
->val
: "");
203 D
->error(D
, exp
->token
, PSI_WARNING
, "%s",
204 exp
->data
.tok
? exp
->data
.tok
->text
->val
: "");
209 psi_cpp_undef(cpp
, exp
->data
.tok
);
214 psi_cpp_define(cpp
, exp
->data
.decl
);
216 exp
->data
.decl
= NULL
;
222 if (psi_cpp_defined(cpp
, exp
->data
.tok
)) {
223 psi_cpp_level_mask(cpp
);
225 psi_cpp_level_skip(cpp
);
232 if (psi_cpp_defined(cpp
, exp
->data
.tok
)) {
233 psi_cpp_level_skip(cpp
);
235 psi_cpp_level_mask(cpp
);
242 if (psi_cpp_if(cpp
, exp
)) {
243 psi_cpp_level_mask(cpp
);
245 psi_cpp_level_skip(cpp
);
251 D
->error(D
, exp
->token
, PSI_WARNING
, "Ingoring lone #endif");
253 psi_cpp_level_unskip(cpp
);
254 psi_cpp_level_unmask(cpp
);
259 /* FIXME: catch "else" after "else" */
261 D
->error(D
, exp
->token
, PSI_WARNING
, "Ingoring lone #else");
262 } else if (psi_cpp_level_skipped(cpp
) && !psi_cpp_level_masked(cpp
)) {
264 * if skip is set on this level and the level has
265 * not been masked yet, then unskip and mask this level
267 psi_cpp_level_unskip(cpp
);
268 psi_cpp_level_mask(cpp
);
269 } else if (!cpp
->skip
&& psi_cpp_level_masked(cpp
)) {
271 * previous block masked this level
273 psi_cpp_level_skip(cpp
);
275 assert(cpp
->skip
<= cpp
->level
);
280 D
->error(D
, exp
->token
, PSI_WARNING
, "Ingoring lone #elif");
281 } else if (psi_cpp_level_skipped(cpp
) && !psi_cpp_level_masked(cpp
)) {
283 * if skip is set on this level and the level has
284 * not been masked yet, then unskip and mask this
285 * level, if the condition evals truthy
287 if (psi_cpp_if(cpp
, exp
)) {
288 psi_cpp_level_unskip(cpp
);
289 psi_cpp_level_mask(cpp
);
291 } else if (!cpp
->skip
&& psi_cpp_level_masked(cpp
)) {
293 * previous block masked this level
295 psi_cpp_level_skip(cpp
);
297 assert(cpp
->skip
<= cpp
->level
);
302 if (!psi_cpp_include(cpp
, exp
->data
.tok
, PSI_CPP_INCLUDE
)) {
303 D
->error(D
, exp
->token
, PSI_WARNING
, "Failed to include %s", exp
->data
.tok
->text
->val
);
307 case PSI_T_INCLUDE_NEXT
:
309 if (!psi_cpp_include(cpp
, exp
->data
.tok
, PSI_CPP_INCLUDE_NEXT
)) {
310 D
->error(D
, exp
->token
, PSI_WARNING
, "Failed to include %s", exp
->data
.tok
->text
->val
);
316 if (!psi_cpp_include(cpp
, exp
->data
.tok
, PSI_CPP_INCLUDE_ONCE
)) {
317 D
->error(D
, exp
->token
, PSI_WARNING
, "Failed to include %s", exp
->data
.tok
->text
->val
);
321 case PSI_T_PRAGMA_ONCE
:
323 zend_hash_add_empty_element(&cpp
->once
, exp
->token
->file
);
331 PSI_DEBUG_PRINT(D
, "PSI: CPP EVAL > %s (level=%u, skip=%u)\n",
332 exp
->token
->text
->val
, cpp
->level
, cpp
->skip
);