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dtparser.l revision 1.1.1.7 
      1 %{
      2 /******************************************************************************
      3  *
      4  * Module Name: dtparser.l - Flex input file for table compiler lexer
      5  *
      6  *****************************************************************************/
      7 
      8 /*
      9  * Copyright (C) 2000 - 2018, 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 \(              return (OP_EXP_PAREN_OPEN);
     67 \)              return (OP_EXP_PAREN_CLOSE);
     68 \~              return (OP_EXP_ONES_COMPLIMENT);
     69 \!              return (OP_EXP_LOGICAL_NOT);
     70 \*              return (OP_EXP_MULTIPLY);
     71 \/              return (OP_EXP_DIVIDE);
     72 \%              return (OP_EXP_MODULO);
     73 \+              return (OP_EXP_ADD);
     74 \-              return (OP_EXP_SUBTRACT);
     75 ">>"            return (OP_EXP_SHIFT_RIGHT);
     76 "<<"            return (OP_EXP_SHIFT_LEFT);
     77 \<              return (OP_EXP_LESS);
     78 \>              return (OP_EXP_GREATER);
     79 "<="            return (OP_EXP_LESS_EQUAL);
     80 ">="            return (OP_EXP_GREATER_EQUAL);
     81 "=="            return (OP_EXP_EQUAL);
     82 "!="            return (OP_EXP_NOT_EQUAL);
     83 \&              return (OP_EXP_AND);
     84 \^              return (OP_EXP_XOR);
     85 \|              return (OP_EXP_OR);
     86 "&&"            return (OP_EXP_LOGICAL_AND);
     87 "||"            return (OP_EXP_LOGICAL_OR);
     88 <<EOF>>         return (OP_EXP_EOF); /* null end-of-string */
     89 
     90 {LabelRef}      return (OP_EXP_LABEL);
     91 {Number}        return (OP_EXP_NUMBER);
     92 {HexNumber}     return (OP_EXP_HEX_NUMBER);
     93 {NewLine}       return (OP_EXP_NEW_LINE);
     94 {WhiteSpace}    /* Ignore */
     95 
     96 .               return (OP_EXP_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 }
    134