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+/*
+ * $Xorg: ifparser.h,v 1.3 2000/08/17 19:41:51 cpqbld Exp $
+ *
+ * Copyright 1992 Network Computing Devices, Inc.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Network Computing Devices may not be
+ * used in advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. Network Computing Devices makes
+ * no representations about the suitability of this software for any purpose.
+ * It is provided ``as is'' without express or implied warranty.
+ *
+ * NETWORK COMPUTING DEVICES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+ * IN NO EVENT SHALL NETWORK COMPUTING DEVICES BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Jim Fulton
+ * Network Computing Devices, Inc.
+ *
+ * Simple if statement processor
+ *
+ * This module can be used to evaluate string representations of C language
+ * if constructs. It accepts the following grammar:
+ *
+ * EXPRESSION := VALUE
+ * | VALUE BINOP EXPRESSION
+ * | VALUE '?' EXPRESSION ':' EXPRESSION
+ *
+ * VALUE := '(' EXPRESSION ')'
+ * | '!' VALUE
+ * | '-' VALUE
+ * | '~' VALUE
+ * | 'defined' '(' variable ')'
+ * | variable
+ * | number
+ *
+ * BINOP := '*' | '/' | '%'
+ * | '+' | '-'
+ * | '<<' | '>>'
+ * | '<' | '>' | '<=' | '>='
+ * | '==' | '!='
+ * | '&' | '^' | '|'
+ * | '&&' | '||'
+ *
+ * The normal C order of precedence is supported.
+ *
+ *
+ * External Entry Points:
+ *
+ * ParseIfExpression parse a string for #if
+ */
+
+/* $XFree86: xc/config/makedepend/ifparser.h,v 3.5 2001/07/25 15:04:40 dawes Exp $ */
+
+#include <stdio.h>
+
+typedef int Bool;
+#define False 0
+#define True 1
+
+typedef struct _if_parser {
+ struct { /* functions */
+ const char *(*handle_error) (struct _if_parser *, const char *,
+ const char *);
+ long (*eval_variable) (struct _if_parser *, const char *, int);
+ int (*eval_defined) (struct _if_parser *, const char *, int);
+ } funcs;
+ char *data;
+} IfParser;
+
+const char *ParseIfExpression (
+ IfParser *,
+ const char *,
+ long *
+);
+