mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
f520690c2c
on every line that starts with a dot use a minimal perfect hash function and a single strcmp() on the first word after the dot to find out whether it is really a directive call and, if yes, which one. Then directly dispatch to a handler function for that directive (or fall through to the dependency handling code). This makes the directive parse a little bit more strict about the syntax: the directive word must be followed by a character that is not alphanumerical and not an underline (making .undefFOO illegal); .endif and .else can only be followed by comments.
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/*-
|
|
* Copyright (c) 1988, 1989, 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
* Copyright (c) 1989 by Berkeley Softworks
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Adam de Boor.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef cond_h_6e96ad7c
|
|
#define cond_h_6e96ad7c
|
|
|
|
/*
|
|
* Values returned by Cond_Eval.
|
|
*/
|
|
#define COND_PARSE 0 /* Parse the next lines */
|
|
#define COND_SKIP 1 /* Skip the next lines */
|
|
#define COND_INVALID 2 /* Not a conditional statement */
|
|
|
|
enum {
|
|
COND_IF,
|
|
COND_IFDEF,
|
|
COND_IFNDEF,
|
|
COND_IFMAKE,
|
|
COND_IFNMAKE,
|
|
COND_ELSE,
|
|
COND_ELIF,
|
|
COND_ELIFDEF,
|
|
COND_ELIFNDEF,
|
|
COND_ELIFMAKE,
|
|
COND_ELIFNMAKE,
|
|
COND_ENDIF,
|
|
};
|
|
|
|
void Cond_If(char *, int, int);
|
|
void Cond_Else(char *, int, int);
|
|
void Cond_Endif(char *, int, int);
|
|
void Cond_End(void);
|
|
|
|
extern Boolean skipLine;
|
|
|
|
#endif /* cond_h_6e96ad7c */
|