1 %{ 2 /****************************************************************************** 3 * 4 * Module Name: dtparser.l - Flex input file for table compiler lexer 5 * 6 *****************************************************************************/ 7 8 /* 9 * Copyright (C) 2000 - 2017, Intel Corp. 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer, 17 * without modification. 18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19 * substantially similar to the "NO WARRANTY" disclaimer below 20 * ("Disclaimer") and any redistribution must be conditioned upon 21 * including a substantially similar Disclaimer requirement for further 22 * binary redistribution. 23 * 3. Neither the names of the above-listed copyright holders nor the names 24 * of any contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * Alternatively, this software may be distributed under the terms of the 28 * GNU General Public License ("GPL") version 2 as published by the Free 29 * Software Foundation. 30 * 31 * NO WARRANTY 32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGES. 43 */ 44 45 #include <contrib/dev/acpica/compiler/aslcompiler.h> 46 #include "dtparser.y.h" 47 48 #define YY_NO_INPUT /* No file input, we use strings only */ 49 50 #define _COMPONENT ACPI_COMPILER 51 ACPI_MODULE_NAME ("dtscanner") 52 %} 53 54 %option noyywrap 55 %option nounput 56 57 Number [0-9a-fA-F]+ 58 HexNumber 0[xX][0-9a-fA-F]+ 59 DecimalNumber 0[dD][0-9]+ 60 LabelRef $[a-zA-Z][0-9a-zA-Z]* 61 WhiteSpace [ \t\v\r]+ 62 NewLine [\n] 63 64 %% 65 66 \( return (EXPOP_PAREN_OPEN); 67 \) return (EXPOP_PAREN_CLOSE); 68 \~ return (EXPOP_ONES_COMPLIMENT); 69 \! return (EXPOP_LOGICAL_NOT); 70 \* return (EXPOP_MULTIPLY); 71 \/ return (EXPOP_DIVIDE); 72 \% return (EXPOP_MODULO); 73 \+ return (EXPOP_ADD); 74 \- return (EXPOP_SUBTRACT); 75 ">>" return (EXPOP_SHIFT_RIGHT); 76 "<<" return (EXPOP_SHIFT_LEFT); 77 \< return (EXPOP_LESS); 78 \> return (EXPOP_GREATER); 79 "<=" return (EXPOP_LESS_EQUAL); 80 ">=" return (EXPOP_GREATER_EQUAL); 81 "==" return (EXPOP_EQUAL); 82 "!=" return (EXPOP_NOT_EQUAL); 83 \& return (EXPOP_AND); 84 \^ return (EXPOP_XOR); 85 \| return (EXPOP_OR); 86 "&&" return (EXPOP_LOGICAL_AND); 87 "||" return (EXPOP_LOGICAL_OR); 88 <<EOF>> return (EXPOP_EOF); /* null end-of-string */ 89 90 {LabelRef} return (EXPOP_LABEL); 91 {Number} return (EXPOP_NUMBER); 92 {HexNumber} return (EXPOP_HEX_NUMBER); 93 {NewLine} return (EXPOP_NEW_LINE); 94 {WhiteSpace} /* Ignore */ 95 96 . return (EXPOP_EOF); 97 98 %% 99 100 /* 101 * Local support functions 102 */ 103 YY_BUFFER_STATE LexBuffer; 104 105 /****************************************************************************** 106 * 107 * FUNCTION: DtInitLexer, DtTerminateLexer 108 * 109 * PARAMETERS: String - Input string to be parsed 110 * 111 * RETURN: None 112 * 113 * DESCRIPTION: Initialization and termination routines for lexer. Lexer needs 114 * a buffer to handle strings instead of a file. 115 * 116 *****************************************************************************/ 117 118 int 119 DtInitLexer ( 120 char *String) 121 { 122 123 LexBuffer = yy_scan_string (String); 124 return (LexBuffer == NULL); 125 } 126 127 void 128 DtTerminateLexer ( 129 void) 130 { 131 132 yy_delete_buffer (LexBuffer); 133 } 134