1 %{
2 /******************************************************************************
3 *
4 * Module Name: prparser.l - Flex input file for preprocessor lexer
5 *
6 *****************************************************************************/
7
8 /******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2023, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************
116 *
117 * Alternatively, you may choose to be licensed under the terms of the
118 * following license:
119 *
120 * Redistribution and use in source and binary forms, with or without
121 * modification, are permitted provided that the following conditions
122 * are met:
123 * 1. Redistributions of source code must retain the above copyright
124 * notice, this list of conditions, and the following disclaimer,
125 * without modification.
126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
127 * substantially similar to the "NO WARRANTY" disclaimer below
128 * ("Disclaimer") and any redistribution must be conditioned upon
129 * including a substantially similar Disclaimer requirement for further
130 * binary redistribution.
131 * 3. Neither the names of the above-listed copyright holders nor the names
132 * of any contributors may be used to endorse or promote products derived
133 * from this software without specific prior written permission.
134 *
135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146 *
147 * Alternatively, you may choose to be licensed under the terms of the
148 * GNU General Public License ("GPL") version 2 as published by the Free
149 * Software Foundation.
150 *
151 *****************************************************************************/
152
153 #include "aslcompiler.h"
154 #include "prparser.y.h"
155
156 /* Buffer to pass strings to the parser */
157
158 #define STRING_SETUP strcpy (AslGbl_StringBuffer, PrParsertext);\
159 PrParserlval.str = AslGbl_StringBuffer
160
161 #define _COMPONENT ACPI_COMPILER
162 ACPI_MODULE_NAME ("prscanner")
163
164
165 /* Local prototypes */
166
167 static char
168 PrDoCommentType1 (
169 void);
170
171 static char
172 PrDoCommentType2 (
173 void);
174 %}
175
176 %option noyywrap
177
178 Number [0-9a-fA-F]+
179 HexNumber 0[xX][0-9a-fA-F]+
180 WhiteSpace [ \t\v\r]+
181 NewLine [\n]
182 Identifier [a-zA-Z][0-9a-zA-Z]*
183
184 %%
185 "/*" { if (!PrDoCommentType1 ()) {yyterminate ();} }
186 "//" { if (!PrDoCommentType2 ()) {yyterminate ();} }
187
188 \( return (EXPOP_PAREN_OPEN);
189 \) return (EXPOP_PAREN_CLOSE);
190 \~ return (EXPOP_ONES_COMPLIMENT);
191 \! return (EXPOP_LOGICAL_NOT);
192 \* return (EXPOP_MULTIPLY);
193 \/ return (EXPOP_DIVIDE);
194 \% return (EXPOP_MODULO);
195 \+ return (EXPOP_ADD);
196 \- return (EXPOP_SUBTRACT);
197 ">>" return (EXPOP_SHIFT_RIGHT);
198 "<<" return (EXPOP_SHIFT_LEFT);
199 \< return (EXPOP_LESS);
200 \> return (EXPOP_GREATER);
201 "<=" return (EXPOP_LESS_EQUAL);
202 ">=" return (EXPOP_GREATER_EQUAL);
203 "==" return (EXPOP_EQUAL);
204 "!=" return (EXPOP_NOT_EQUAL);
205 \& return (EXPOP_AND);
206 \^ return (EXPOP_XOR);
207 \| return (EXPOP_OR);
208 "&&" return (EXPOP_LOGICAL_AND);
209 "||" return (EXPOP_LOGICAL_OR);
210
211 "defined" return (EXPOP_DEFINE);
212 {Identifier} {STRING_SETUP; return (EXPOP_IDENTIFIER);}
213
214 <<EOF>> return (EXPOP_EOF); /* null end-of-string */
215
216 {Number} return (EXPOP_NUMBER);
217 {HexNumber} return (EXPOP_HEX_NUMBER);
218 {NewLine} return (EXPOP_NEW_LINE);
219 {WhiteSpace} /* Ignore */
220
221 . return (EXPOP_EOF);
222 %%
223
224 /*
225 * Local support functions
226 */
227 static YY_BUFFER_STATE LexBuffer;
228
229
230 /******************************************************************************
231 *
232 * FUNCTION: PrInitLexer
233 *
234 * PARAMETERS: String - Input string to be parsed
235 *
236 * RETURN: TRUE if parser returns NULL. FALSE otherwise.
237 *
238 * DESCRIPTION: Initialization routine for lexer. The lexer needs
239 * a buffer to handle strings instead of a file.
240 *
241 *****************************************************************************/
242
243 int
PrInitLexer(char * String)244 PrInitLexer (
245 char *String)
246 {
247
248 LexBuffer = yy_scan_string (String);
249 return (LexBuffer == NULL);
250 }
251
252
253 /******************************************************************************
254 *
255 * FUNCTION: PrTerminateLexer
256 *
257 * PARAMETERS: None
258 *
259 * RETURN: None
260 *
261 * DESCRIPTION: Termination routine for thelexer.
262 *
263 *****************************************************************************/
264
265 void
PrTerminateLexer(void)266 PrTerminateLexer (
267 void)
268 {
269
270 yy_delete_buffer (LexBuffer);
271 }
272
273
274 /********************************************************************************
275 *
276 * FUNCTION: PrDoCommentType1
277 *
278 * PARAMETERS: none
279 *
280 * RETURN: none
281 *
282 * DESCRIPTION: Process a new legacy comment. Just toss it.
283 *
284 ******************************************************************************/
285
286 static char
PrDoCommentType1(void)287 PrDoCommentType1 (
288 void)
289 {
290 int c;
291
292
293 Loop:
294 while (((c = input ()) != '*') && (c != EOF))
295 {
296 }
297 if (c == EOF)
298 {
299 return (FALSE);
300 }
301
302 if (((c = input ()) != '/') && (c != EOF))
303 {
304 unput (c);
305 goto Loop;
306 }
307 if (c == EOF)
308 {
309 return (FALSE);
310 }
311
312 return (TRUE);
313 }
314
315
316 /********************************************************************************
317 *
318 * FUNCTION: PrDoCommentType2
319 *
320 * PARAMETERS: none
321 *
322 * RETURN: none
323 *
324 * DESCRIPTION: Process a new "//" comment. Just toss it.
325 *
326 ******************************************************************************/
327
328 static char
PrDoCommentType2(void)329 PrDoCommentType2 (
330 void)
331 {
332 int c;
333
334
335 while (((c = input ()) != '\n') && (c != EOF))
336 {
337 }
338 if (c == EOF)
339 {
340 return (FALSE);
341 }
342
343 return (TRUE);
344 }
345
