2 /******************************************************************************
4 * Module Name: prparser.l - Flex input file for preprocessor lexer
6 *****************************************************************************/
9 * Copyright (C) 2000 - 2013, Intel Corp.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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.
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
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45 #include "aslcompiler.h"
46 #include "prparser.y.h"
48 /* Buffer to pass strings to the parser */
50 #define STRING_SETUP strcpy (StringBuffer, PrParsertext);\
51 PrParserlval.str = StringBuffer
53 #define YY_NO_INPUT /* No file input, we use strings only */
55 #define _COMPONENT ACPI_COMPILER
56 ACPI_MODULE_NAME ("prscanner")
63 HexNumber 0[xX][0-9a-fA-F]+
66 Identifier [a-zA-Z][0-9a-zA-Z]*
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);
90 "&&" return (EXPOP_LOGICAL_AND);
91 "||" return (EXPOP_LOGICAL_OR);
93 "defined" return (EXPOP_DEFINE);
94 {Identifier} {STRING_SETUP; return (EXPOP_IDENTIFIER);}
96 <<EOF>> return (EXPOP_EOF); /* null end-of-string */
98 {Number} return (EXPOP_NUMBER);
99 {HexNumber} return (EXPOP_HEX_NUMBER);
100 {NewLine} return (EXPOP_NEW_LINE);
101 {WhiteSpace} /* Ignore */
103 . return (EXPOP_EOF);
107 * Local support functions
109 YY_BUFFER_STATE LexBuffer;
112 /******************************************************************************
114 * FUNCTION: PrInitLexer
116 * PARAMETERS: String - Input string to be parsed
118 * RETURN: TRUE if parser returns NULL. FALSE otherwise.
120 * DESCRIPTION: Initialization routine for lexer. The lexer needs
121 * a buffer to handle strings instead of a file.
123 *****************************************************************************/
130 LexBuffer = yy_scan_string (String);
131 return (LexBuffer == NULL);
135 /******************************************************************************
137 * FUNCTION: PrTerminateLexer
143 * DESCRIPTION: Termination routine for thelexer.
145 *****************************************************************************/
152 yy_delete_buffer (LexBuffer);