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 - 2018, 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 (StringBuffer, PrParsertext);\ 159 PrParserlval.str = 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 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 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 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 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