1233237Sjkim%{ 2233237Sjkim/****************************************************************************** 3233237Sjkim * 4233237Sjkim * Module Name: prparser.l - Flex input file for preprocessor lexer 5233237Sjkim * 6233237Sjkim *****************************************************************************/ 7233237Sjkim 8233237Sjkim/* 9306536Sjkim * Copyright (C) 2000 - 2016, Intel Corp. 10233237Sjkim * All rights reserved. 11233237Sjkim * 12233237Sjkim * Redistribution and use in source and binary forms, with or without 13233237Sjkim * modification, are permitted provided that the following conditions 14233237Sjkim * are met: 15233237Sjkim * 1. Redistributions of source code must retain the above copyright 16233237Sjkim * notice, this list of conditions, and the following disclaimer, 17233237Sjkim * without modification. 18233237Sjkim * 2. Redistributions in binary form must reproduce at minimum a disclaimer 19233237Sjkim * substantially similar to the "NO WARRANTY" disclaimer below 20233237Sjkim * ("Disclaimer") and any redistribution must be conditioned upon 21233237Sjkim * including a substantially similar Disclaimer requirement for further 22233237Sjkim * binary redistribution. 23233237Sjkim * 3. Neither the names of the above-listed copyright holders nor the names 24233237Sjkim * of any contributors may be used to endorse or promote products derived 25233237Sjkim * from this software without specific prior written permission. 26233237Sjkim * 27233237Sjkim * Alternatively, this software may be distributed under the terms of the 28233237Sjkim * GNU General Public License ("GPL") version 2 as published by the Free 29233237Sjkim * Software Foundation. 30233237Sjkim * 31233237Sjkim * NO WARRANTY 32233237Sjkim * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 33233237Sjkim * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 34233237Sjkim * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 35233237Sjkim * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 36233237Sjkim * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37233237Sjkim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38233237Sjkim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39233237Sjkim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 40233237Sjkim * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 41233237Sjkim * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42233237Sjkim * POSSIBILITY OF SUCH DAMAGES. 43233237Sjkim */ 44233237Sjkim 45233250Sjkim#include <contrib/dev/acpica/compiler/aslcompiler.h> 46233237Sjkim#include "prparser.y.h" 47233237Sjkim 48233237Sjkim/* Buffer to pass strings to the parser */ 49233237Sjkim 50233237Sjkim#define STRING_SETUP strcpy (StringBuffer, PrParsertext);\ 51233237Sjkim PrParserlval.str = StringBuffer 52233237Sjkim 53233237Sjkim#define _COMPONENT ACPI_COMPILER 54233237Sjkim ACPI_MODULE_NAME ("prscanner") 55306536Sjkim 56306536Sjkim 57306536Sjkim/* Local prototypes */ 58306536Sjkim 59306536Sjkimstatic char 60306536SjkimPrDoCommentType1 ( 61306536Sjkim void); 62306536Sjkim 63306536Sjkimstatic char 64306536SjkimPrDoCommentType2 ( 65306536Sjkim void); 66233237Sjkim%} 67233237Sjkim 68233237Sjkim%option noyywrap 69233237Sjkim 70233237SjkimNumber [0-9a-fA-F]+ 71233237SjkimHexNumber 0[xX][0-9a-fA-F]+ 72233237SjkimWhiteSpace [ \t\v\r]+ 73233237SjkimNewLine [\n] 74233237SjkimIdentifier [a-zA-Z][0-9a-zA-Z]* 75233237Sjkim 76233237Sjkim%% 77306536Sjkim"/*" { if (!PrDoCommentType1 ()) {yyterminate ();} } 78306536Sjkim"//" { if (!PrDoCommentType2 ()) {yyterminate ();} } 79233237Sjkim 80233237Sjkim\( return (EXPOP_PAREN_OPEN); 81233237Sjkim\) return (EXPOP_PAREN_CLOSE); 82233237Sjkim\~ return (EXPOP_ONES_COMPLIMENT); 83233237Sjkim\! return (EXPOP_LOGICAL_NOT); 84233237Sjkim\* return (EXPOP_MULTIPLY); 85233237Sjkim\/ return (EXPOP_DIVIDE); 86233237Sjkim\% return (EXPOP_MODULO); 87233237Sjkim\+ return (EXPOP_ADD); 88233237Sjkim\- return (EXPOP_SUBTRACT); 89233237Sjkim">>" return (EXPOP_SHIFT_RIGHT); 90233237Sjkim"<<" return (EXPOP_SHIFT_LEFT); 91233237Sjkim\< return (EXPOP_LESS); 92233237Sjkim\> return (EXPOP_GREATER); 93233237Sjkim"<=" return (EXPOP_LESS_EQUAL); 94233237Sjkim">=" return (EXPOP_GREATER_EQUAL); 95233237Sjkim"==" return (EXPOP_EQUAL); 96233237Sjkim"!=" return (EXPOP_NOT_EQUAL); 97233237Sjkim\& return (EXPOP_AND); 98233237Sjkim\^ return (EXPOP_XOR); 99233237Sjkim\| return (EXPOP_OR); 100233237Sjkim"&&" return (EXPOP_LOGICAL_AND); 101233237Sjkim"||" return (EXPOP_LOGICAL_OR); 102233237Sjkim 103233237Sjkim"defined" return (EXPOP_DEFINE); 104233237Sjkim{Identifier} {STRING_SETUP; return (EXPOP_IDENTIFIER);} 105233237Sjkim 106233237Sjkim<<EOF>> return (EXPOP_EOF); /* null end-of-string */ 107233237Sjkim 108233237Sjkim{Number} return (EXPOP_NUMBER); 109233237Sjkim{HexNumber} return (EXPOP_HEX_NUMBER); 110233237Sjkim{NewLine} return (EXPOP_NEW_LINE); 111233237Sjkim{WhiteSpace} /* Ignore */ 112233237Sjkim 113233237Sjkim. return (EXPOP_EOF); 114233237Sjkim%% 115233237Sjkim 116233237Sjkim/* 117233237Sjkim * Local support functions 118233237Sjkim */ 119233237SjkimYY_BUFFER_STATE LexBuffer; 120233237Sjkim 121233237Sjkim 122233237Sjkim/****************************************************************************** 123233237Sjkim * 124233237Sjkim * FUNCTION: PrInitLexer 125233237Sjkim * 126233237Sjkim * PARAMETERS: String - Input string to be parsed 127233237Sjkim * 128233237Sjkim * RETURN: TRUE if parser returns NULL. FALSE otherwise. 129233237Sjkim * 130233237Sjkim * DESCRIPTION: Initialization routine for lexer. The lexer needs 131233237Sjkim * a buffer to handle strings instead of a file. 132233237Sjkim * 133233237Sjkim *****************************************************************************/ 134233237Sjkim 135233237Sjkimint 136233237SjkimPrInitLexer ( 137233237Sjkim char *String) 138233237Sjkim{ 139233237Sjkim 140233237Sjkim LexBuffer = yy_scan_string (String); 141233237Sjkim return (LexBuffer == NULL); 142233237Sjkim} 143233237Sjkim 144233237Sjkim 145233237Sjkim/****************************************************************************** 146233237Sjkim * 147233237Sjkim * FUNCTION: PrTerminateLexer 148233237Sjkim * 149233237Sjkim * PARAMETERS: None 150233237Sjkim * 151233237Sjkim * RETURN: None 152233237Sjkim * 153233237Sjkim * DESCRIPTION: Termination routine for thelexer. 154233237Sjkim * 155233237Sjkim *****************************************************************************/ 156233237Sjkim 157233237Sjkimvoid 158233237SjkimPrTerminateLexer ( 159233237Sjkim void) 160233237Sjkim{ 161233237Sjkim 162233237Sjkim yy_delete_buffer (LexBuffer); 163233237Sjkim} 164306536Sjkim 165306536Sjkim 166306536Sjkim/******************************************************************************** 167306536Sjkim * 168306536Sjkim * FUNCTION: PrDoCommentType1 169306536Sjkim * 170306536Sjkim * PARAMETERS: none 171306536Sjkim * 172306536Sjkim * RETURN: none 173306536Sjkim * 174306536Sjkim * DESCRIPTION: Process a new legacy comment. Just toss it. 175306536Sjkim * 176306536Sjkim ******************************************************************************/ 177306536Sjkim 178306536Sjkimstatic char 179306536SjkimPrDoCommentType1 ( 180306536Sjkim void) 181306536Sjkim{ 182306536Sjkim int c; 183306536Sjkim 184306536Sjkim 185306536SjkimLoop: 186306536Sjkim while (((c = input ()) != '*') && (c != EOF)) 187306536Sjkim { 188306536Sjkim } 189306536Sjkim if (c == EOF) 190306536Sjkim { 191306536Sjkim return (FALSE); 192306536Sjkim } 193306536Sjkim 194306536Sjkim if (((c = input ()) != '/') && (c != EOF)) 195306536Sjkim { 196306536Sjkim unput (c); 197306536Sjkim goto Loop; 198306536Sjkim } 199306536Sjkim if (c == EOF) 200306536Sjkim { 201306536Sjkim return (FALSE); 202306536Sjkim } 203306536Sjkim 204306536Sjkim return (TRUE); 205306536Sjkim} 206306536Sjkim 207306536Sjkim 208306536Sjkim/******************************************************************************** 209306536Sjkim * 210306536Sjkim * FUNCTION: PrDoCommentType2 211306536Sjkim * 212306536Sjkim * PARAMETERS: none 213306536Sjkim * 214306536Sjkim * RETURN: none 215306536Sjkim * 216306536Sjkim * DESCRIPTION: Process a new "//" comment. Just toss it. 217306536Sjkim * 218306536Sjkim ******************************************************************************/ 219306536Sjkim 220306536Sjkimstatic char 221306536SjkimPrDoCommentType2 ( 222306536Sjkim void) 223306536Sjkim{ 224306536Sjkim int c; 225306536Sjkim 226306536Sjkim 227306536Sjkim while (((c = input ()) != '\n') && (c != EOF)) 228306536Sjkim { 229306536Sjkim } 230306536Sjkim if (c == EOF) 231306536Sjkim { 232306536Sjkim return (FALSE); 233306536Sjkim } 234306536Sjkim 235306536Sjkim return (TRUE); 236306536Sjkim} 237