prparser.l revision 241973 
1%{
2/******************************************************************************
3 *
4 * Module Name: prparser.l - Flex input file for preprocessor lexer
5 *
6 *****************************************************************************/
7
8/*
9 * Copyright (C) 2000 - 2012, 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 <contrib/dev/acpica/compiler/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
62Number          [0-9a-fA-F]+
63HexNumber       0[xX][0-9a-fA-F]+
64WhiteSpace      [ \t\v\r]+
65NewLine         [\n]
66Identifier      [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 */
109YY_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
125int
126PrInitLexer (
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
147void
148PrTerminateLexer (
149    void)
150{
151
152    yy_delete_buffer (LexBuffer);
153}
154