1 %{ 2 /****************************************************************************** 3 * 4 * Module Name: dtcompilerparser.l - Flex input file for table compiler lexer 5 * 6 *****************************************************************************/ 7 8 /* 9 * Copyright (C) 2000 - 2023, 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 MERCHANTABILITY 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 "aslcompiler.h" 46 #include "dtcompilerparser.y.h" 47 48 49 #define _COMPONENT ACPI_COMPILER 50 ACPI_MODULE_NAME ("dtcompilerscanner") 51 52 /* handle locations */ 53 54 int DtCompilerParsercolumn = 1; 55 int DtLabelByteOffset = 0; 56 int DtCompilerParserByteOffset = 0; 57 58 UINT32 DtTokenFirstLine = 0; 59 UINT32 DtTokenFirstColumn = 0; 60 61 #define YY_USER_ACTION \ 62 DtTokenFirstLine = DtCompilerParserlineno; \ 63 DtTokenFirstColumn = DtCompilerParsercolumn; \ 64 DtCompilerParsercolumn += DtCompilerParserleng; \ 65 DtCompilerParserByteOffset += DtCompilerParserleng; \ 66 DbgPrint (ASL_PARSE_OUTPUT,\ 67 "user action occurred. DtCompilerParserlloc.first_line: %u\n",\ 68 DtTokenFirstLine); 69 %} 70 71 %option nounput noinput yylineno 72 73 /* Indicates a state used for parsing multiline C comments */ 74 %x ML_COMMENT 75 %x DATA_STATE 76 77 WhiteSpace [ \t\v\r]+ 78 NewLines [\n]+ 79 80 /* Avoid ", \n, and [] as a part of label name. These are not valid characters of a label name */ 81 LabelName [^ ":\n\[\]]([^":\n\[\]]*[^" :\n\[\]])? 82 83 /* Avoid ", \n, \\, and [] as a part of data. These are not valid characters of data */ 84 Data [^ \\":\n\[\]]([^":\n\[\]\\]*[^" :\n\[\]\\])? 85 86 Text [^ ":\n][^":\n]* 87 Comment \[[^\n\[\]]*\] 88 CommentField {LabelName}{WhiteSpace}*:{WhiteSpace}{Comment}?$ 89 90 91 %% 92 93 <DATA_STATE>{WhiteSpace}"\\\n" { 94 DbgPrint(ASL_PARSE_OUTPUT,"Continuation matched\n"); 95 return (DT_PARSEOP_LINE_CONTINUATION); 96 } 97 98 ":" { 99 DbgPrint(ASL_PARSE_OUTPUT, ": Matched\n"); 100 BEGIN (DATA_STATE); 101 return (':'); 102 } 103 104 <INITIAL,DATA_STATE>{WhiteSpace} { DbgPrint(ASL_PARSE_OUTPUT,"Whitespace matched\n"); } 105 106 <INITIAL,DATA_STATE>{Comment} { DbgPrint(ASL_PARSE_OUTPUT,"Comment matched\n"); } 107 108 "/*" { BEGIN (ML_COMMENT); } 109 <ML_COMMENT>"*/" { BEGIN (INITIAL); } 110 <ML_COMMENT>"*/\n" { BEGIN (INITIAL); } 111 <ML_COMMENT>([^*]|\n)+|. /* Ignore */ 112 "//".* /* Ignore */ 113 114 115 <DATA_STATE>{Data} { 116 char *s; 117 int size = strlen (DtCompilerParsertext); 118 s=UtLocalCacheCalloc (size + 1); 119 AcpiUtSafeStrncpy (s, DtCompilerParsertext, size + 1); 120 DtCompilerParserlval.s = s; 121 DbgPrint (ASL_PARSE_OUTPUT, "Data: %s\n", s); 122 return (DT_PARSEOP_DATA); 123 } 124 125 {CommentField} /* ignore */ 126 127 {LabelName} { 128 char *s; 129 int size = strlen (DtCompilerParsertext); 130 s=UtLocalCacheCalloc (size + 1); 131 AcpiUtSafeStrncpy (s, DtCompilerParsertext, size + 1); 132 DtCompilerParserlval.u = (DT_TABLE_UNIT *) UtLocalCacheCalloc (sizeof (DT_TABLE_UNIT)); 133 DtCompilerParserlval.u->Value = s; 134 DtCompilerParserlval.u->Line = DtCompilerParserlineno; 135 DtCompilerParserlval.u->Column = DtCompilerParsercolumn; 136 DtLabelByteOffset = DtCompilerParserByteOffset; 137 DbgPrint (ASL_PARSE_OUTPUT, "Label: %s\n", s); 138 return (DT_PARSEOP_LABEL); 139 } 140 141 142 <DATA_STATE>\"{Text}?\" { // remove outer quotes from the string, they are unnecessary 143 char *s; 144 int size = strlen (DtCompilerParsertext); 145 s=UtLocalCacheCalloc (size - 1); 146 AcpiUtSafeStrncpy (s, DtCompilerParsertext + 1, size - 1); 147 DtCompilerParserlval.s = s; 148 DbgPrint (ASL_PARSE_OUTPUT, "String Data: %s\n", s); 149 BEGIN (INITIAL); 150 return (DT_PARSEOP_STRING_DATA); 151 } 152 153 154 <INITIAL,DATA_STATE>{NewLines} { 155 DbgPrint(ASL_PARSE_OUTPUT, 156 "Newline matched (data state). Current line number: %u\n",DtCompilerParserlineno); 157 BEGIN (INITIAL); DtCompilerParsercolumn = 1; 158 } 159 160 161 %% 162 163 164 /* 165 * Local support functions 166 */ 167 168 void 169 DtCompilerInitLexer ( 170 FILE *inFile) 171 { 172 yyin = inFile; 173 } 174 175 void 176 DtCompilerTerminateLexer ( 177 void) 178 { 179 /* 180 * Flex/Bison increments the lineno for the EOF so decrement by 1 to get 181 * the correct number of lines. 182 */ 183 AslGbl_CurrentLineNumber = DtCompilerParserlineno - 1; 184 AslGbl_InputByteCount = DtCompilerParserByteOffset; 185 } 186