1 %{
   2 /******************************************************************************
   3  *
   4  * Module Name: dtparser.l - Flex input file for table compiler 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 "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 }