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Diffstat (limited to 'source/compiler/prparser.l')
| -rw-r--r-- | source/compiler/prparser.l | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/source/compiler/prparser.l b/source/compiler/prparser.l new file mode 100644 index 0000000..f0a06e1 --- /dev/null +++ b/source/compiler/prparser.l @@ -0,0 +1,153 @@ +%{ +/****************************************************************************** + * + * Module Name: prparser.l - Flex input file for preprocessor lexer + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + +#include "aslcompiler.h" +#include "prparser.y.h" + +/* Buffer to pass strings to the parser */ + +#define STRING_SETUP strcpy (StringBuffer, PrParsertext);\ + PrParserlval.str = StringBuffer + +#define YY_NO_INPUT /* No file input, we use strings only */ + +#define _COMPONENT ACPI_COMPILER + ACPI_MODULE_NAME ("prscanner") +%} + +%option noyywrap +%option nounput + +Number [0-9a-fA-F]+ +HexNumber 0[xX][0-9a-fA-F]+ +WhiteSpace [ \t\v\r]+ +NewLine [\n] +Identifier [a-zA-Z][0-9a-zA-Z]* + +%% + +\( return (EXPOP_PAREN_OPEN); +\) return (EXPOP_PAREN_CLOSE); +\~ return (EXPOP_ONES_COMPLIMENT); +\! return (EXPOP_LOGICAL_NOT); +\* return (EXPOP_MULTIPLY); +\/ return (EXPOP_DIVIDE); +\% return (EXPOP_MODULO); +\+ return (EXPOP_ADD); +\- return (EXPOP_SUBTRACT); +">>" return (EXPOP_SHIFT_RIGHT); +"<<" return (EXPOP_SHIFT_LEFT); +\< return (EXPOP_LESS); +\> return (EXPOP_GREATER); +"<=" return (EXPOP_LESS_EQUAL); +">=" return (EXPOP_GREATER_EQUAL); +"==" return (EXPOP_EQUAL); +"!=" return (EXPOP_NOT_EQUAL); +\& return (EXPOP_AND); +\^ return (EXPOP_XOR); +\| return (EXPOP_OR); +"&&" return (EXPOP_LOGICAL_AND); +"||" return (EXPOP_LOGICAL_OR); + +"defined" return (EXPOP_DEFINE); +{Identifier} {STRING_SETUP; return (EXPOP_IDENTIFIER);} + +<<EOF>> return (EXPOP_EOF); /* null end-of-string */ + +{Number} return (EXPOP_NUMBER); +{HexNumber} return (EXPOP_HEX_NUMBER); +{NewLine} return (EXPOP_NEW_LINE); +{WhiteSpace} /* Ignore */ + +. return (EXPOP_EOF); +%% + +/* + * Local support functions + */ +YY_BUFFER_STATE LexBuffer; + + +/****************************************************************************** + * + * FUNCTION: PrInitLexer + * + * PARAMETERS: String - Input string to be parsed + * + * RETURN: TRUE if parser returns NULL. FALSE otherwise. + * + * DESCRIPTION: Initialization routine for lexer. The lexer needs + * a buffer to handle strings instead of a file. + * + *****************************************************************************/ + +int +PrInitLexer ( + char *String) +{ + + LexBuffer = yy_scan_string (String); + return (LexBuffer == NULL); +} + + +/****************************************************************************** + * + * FUNCTION: PrTerminateLexer + * + * PARAMETERS: None + * + * RETURN: None + * + * DESCRIPTION: Termination routine for thelexer. + * + *****************************************************************************/ + +void +PrTerminateLexer ( + void) +{ + + yy_delete_buffer (LexBuffer); +} |
