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 *******************************************************************************/
29 # include "php_config.h"
37 struct psi_cpp_exp
*psi_cpp_exp_init(token_t type
, void *data
)
39 struct psi_cpp_exp
*exp
= pecalloc(1, sizeof(*exp
), 1);
41 switch ((exp
->type
= type
)) {
49 case PSI_T_INCLUDE_NEXT
:
53 exp
->data
.decl
= data
;
61 case PSI_T_PRAGMA_ONCE
:
71 void psi_cpp_exp_free(struct psi_cpp_exp
**exp_ptr
)
74 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(struct psi_dump
*dump
, struct psi_cpp_exp
*exp
)
110 PSI_DUMP(dump
, "#%s ", exp
->token
->text
->val
);
114 if (!exp
->data
.tok
) {
121 PSI_DUMP(dump
, "%s", exp
->data
.tok
->text
->val
);
125 case PSI_T_INCLUDE_NEXT
:
126 if (exp
->data
.tok
->type
== PSI_T_CPP_HEADER
) {
127 PSI_DUMP(dump
, "<%s>", exp
->data
.tok
->text
->val
);
129 PSI_DUMP(dump
, "\"%s\"", exp
->data
.tok
->text
->val
);
133 psi_cpp_macro_decl_dump(dump
, exp
->data
.decl
);
137 psi_num_exp_dump(dump
, exp
->data
.num
);
141 case PSI_T_PRAGMA_ONCE
:
147 PSI_DUMP(dump
, "\n");
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_DEBUG_PRINT(cpp
->parser
, "PSI: CPP exec -> ");
192 PSI_DEBUG_DUMP(cpp
->parser
, psi_cpp_exp_dump
, exp
);
198 D
->error(D
, exp
->token
, PSI_ERROR
, "%s",
199 exp
->data
.tok
? exp
->data
.tok
->text
->val
: "");
204 D
->error(D
, exp
->token
, PSI_WARNING
, "%s",
205 exp
->data
.tok
? exp
->data
.tok
->text
->val
: "");
210 psi_cpp_undef(cpp
, exp
->data
.tok
);
215 psi_cpp_define(cpp
, exp
->data
.decl
);
217 exp
->data
.decl
= NULL
;
223 if (psi_cpp_defined(cpp
, exp
->data
.tok
)) {
224 psi_cpp_level_mask(cpp
);
226 psi_cpp_level_skip(cpp
);
233 if (psi_cpp_defined(cpp
, exp
->data
.tok
)) {
234 psi_cpp_level_skip(cpp
);
236 psi_cpp_level_mask(cpp
);
243 if (psi_cpp_if(cpp
, exp
)) {
244 psi_cpp_level_mask(cpp
);
246 psi_cpp_level_skip(cpp
);
252 D
->error(D
, exp
->token
, PSI_WARNING
, "Ingoring lone #endif");
254 psi_cpp_level_unskip(cpp
);
255 psi_cpp_level_unmask(cpp
);
260 /* FIXME: catch "else" after "else" */
262 D
->error(D
, exp
->token
, PSI_WARNING
, "Ingoring lone #else");
263 } else if (psi_cpp_level_skipped(cpp
) && !psi_cpp_level_masked(cpp
)) {
265 * if skip is set on this level and the level has
266 * not been masked yet, then unskip and mask this level
268 psi_cpp_level_unskip(cpp
);
269 psi_cpp_level_mask(cpp
);
270 } else if (!cpp
->skip
&& psi_cpp_level_masked(cpp
)) {
272 * previous block masked this level
274 psi_cpp_level_skip(cpp
);
276 assert(cpp
->skip
<= cpp
->level
);
281 D
->error(D
, exp
->token
, PSI_WARNING
, "Ingoring lone #elif");
282 } else if (psi_cpp_level_skipped(cpp
) && !psi_cpp_level_masked(cpp
)) {
284 * if skip is set on this level and the level has
285 * not been masked yet, then unskip and mask this
286 * level, if the condition evals truthy
288 if (psi_cpp_if(cpp
, exp
)) {
289 psi_cpp_level_unskip(cpp
);
290 psi_cpp_level_mask(cpp
);
292 } else if (!cpp
->skip
&& psi_cpp_level_masked(cpp
)) {
294 * previous block masked this level
296 psi_cpp_level_skip(cpp
);
298 assert(cpp
->skip
<= cpp
->level
);
303 if (!psi_cpp_include(cpp
, exp
->data
.tok
, PSI_CPP_INCLUDE
)) {
304 D
->error(D
, exp
->token
, PSI_WARNING
, "Failed to include %s: %s",
305 exp
->data
.tok
->text
->val
, strerror(errno
));
309 case PSI_T_INCLUDE_NEXT
:
311 if (!psi_cpp_include(cpp
, exp
->data
.tok
, PSI_CPP_INCLUDE_NEXT
)) {
312 D
->error(D
, exp
->token
, PSI_WARNING
, "Failed to include next %s: %s",
313 exp
->data
.tok
->text
->val
, strerror(errno
));
319 if (!psi_cpp_include(cpp
, exp
->data
.tok
, PSI_CPP_INCLUDE_ONCE
)) {
320 D
->error(D
, exp
->token
, PSI_WARNING
, "Failed to include once %s: %s",
321 exp
->data
.tok
->text
->val
, strerror(errno
));
325 case PSI_T_PRAGMA_ONCE
:
327 zend_hash_add_empty_element(&cpp
->once
, exp
->token
->file
);
335 PSI_DEBUG_PRINT(D
, "PSI: CPP EVAL > %s (level=%u, skip=%u)\n",
336 exp
->token
->text
->val
, cpp
->level
, cpp
->skip
);