1 %{
2 /******************************************************************************
3 *
4 * Module Name: dtparser.l - Flex input file for table compiler lexer
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2023, 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 MERCHANTABILITY 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 static 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
DtInitLexer(char * String)119 DtInitLexer (
120 char *String)
121 {
122 LexBuffer = yy_scan_string (String);
123 return (LexBuffer == NULL);
124 }
125
126 void
DtTerminateLexer(void)127 DtTerminateLexer (
128 void)
129 {
130 yy_delete_buffer (LexBuffer);
131 }
132