1 %{
   2 /******************************************************************************
   3  *
   4  * Module Name: prparser.l - Flex input file for preprocessor lexer
   5  *
   6  *****************************************************************************/
   7 
   8 /*
   9  * Copyright (C) 2000 - 2014, 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 "aslcompiler.h"
  46 #include "prparser.y.h"
  47 
  48 /* Buffer to pass strings to the parser */
  49 
  50 #define STRING_SETUP    strcpy (StringBuffer, PrParsertext);\
  51     PrParserlval.str = StringBuffer
  52 
  53 #define YY_NO_INPUT     /* No file input, we use strings only */
  54 
  55 #define _COMPONENT          ACPI_COMPILER
  56         ACPI_MODULE_NAME    ("prscanner")
  57 %}
  58 
  59 %option noyywrap
  60 %option nounput
  61 
  62 Number          [0-9a-fA-F]+
  63 HexNumber       0[xX][0-9a-fA-F]+
  64 WhiteSpace      [ \t\v\r]+
  65 NewLine         [\n]
  66 Identifier      [a-zA-Z][0-9a-zA-Z]*
  67 
  68 %%
  69 
  70 \(              return (EXPOP_PAREN_OPEN);
  71 \)              return (EXPOP_PAREN_CLOSE);
  72 \~              return (EXPOP_ONES_COMPLIMENT);
  73 \!              return (EXPOP_LOGICAL_NOT);
  74 \*              return (EXPOP_MULTIPLY);
  75 \/              return (EXPOP_DIVIDE);
  76 \%              return (EXPOP_MODULO);
  77 \+              return (EXPOP_ADD);
  78 \-              return (EXPOP_SUBTRACT);
  79 ">>"            return (EXPOP_SHIFT_RIGHT);
  80 "<<"            return (EXPOP_SHIFT_LEFT);
  81 \<              return (EXPOP_LESS);
  82 \>              return (EXPOP_GREATER);
  83 "<="            return (EXPOP_LESS_EQUAL);
  84 ">="            return (EXPOP_GREATER_EQUAL);
  85 "=="            return (EXPOP_EQUAL);
  86 "!="            return (EXPOP_NOT_EQUAL);
  87 \&              return (EXPOP_AND);
  88 \^              return (EXPOP_XOR);
  89 \|              return (EXPOP_OR);
  90 "&&"            return (EXPOP_LOGICAL_AND);
  91 "||"            return (EXPOP_LOGICAL_OR);
  92 
  93 "defined"       return (EXPOP_DEFINE);
  94 {Identifier}    {STRING_SETUP; return (EXPOP_IDENTIFIER);}
  95 
  96 <<EOF>>         return (EXPOP_EOF); /* null end-of-string */
  97 
  98 {Number}        return (EXPOP_NUMBER);
  99 {HexNumber}     return (EXPOP_HEX_NUMBER);
 100 {NewLine}       return (EXPOP_NEW_LINE);
 101 {WhiteSpace}    /* Ignore */
 102 
 103 .               return (EXPOP_EOF);
 104 %%
 105 
 106 /*
 107  * Local support functions
 108  */
 109 YY_BUFFER_STATE         LexBuffer;
 110 
 111 
 112 /******************************************************************************
 113  *
 114  * FUNCTION:    PrInitLexer
 115  *
 116  * PARAMETERS:  String              - Input string to be parsed
 117  *
 118  * RETURN:      TRUE if parser returns NULL. FALSE otherwise.
 119  *
 120  * DESCRIPTION: Initialization routine for lexer. The lexer needs
 121  *              a buffer to handle strings instead of a file.
 122  *
 123  *****************************************************************************/
 124 
 125 int
 126 PrInitLexer (
 127     char                    *String)
 128 {
 129 
 130     LexBuffer = yy_scan_string (String);
 131     return (LexBuffer == NULL);
 132 }
 133 
 134 
 135 /******************************************************************************
 136  *
 137  * FUNCTION:    PrTerminateLexer
 138  *
 139  * PARAMETERS:  None
 140  *
 141  * RETURN:      None
 142  *
 143  * DESCRIPTION: Termination routine for thelexer.
 144  *
 145  *****************************************************************************/
 146 
 147 void
 148 PrTerminateLexer (
 149     void)
 150 {
 151 
 152     yy_delete_buffer (LexBuffer);
 153 }