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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
/*-
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef cond_h_6e96ad7c
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#define cond_h_6e96ad7c
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/*
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* Values returned by Cond_Eval.
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*/
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#define COND_PARSE 0 /* Parse the next lines */
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#define COND_SKIP 1 /* Skip the next lines */
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#define COND_INVALID 2 /* Not a conditional statement */
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enum {
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COND_IF,
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COND_IFDEF,
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COND_IFNDEF,
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COND_IFMAKE,
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COND_IFNMAKE,
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COND_ELSE,
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COND_ELIF,
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COND_ELIFDEF,
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COND_ELIFNDEF,
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COND_ELIFMAKE,
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COND_ELIFNMAKE,
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COND_ENDIF,
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};
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void Cond_If(char *, int, int);
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void Cond_Else(char *, int, int);
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void Cond_Endif(char *, int, int);
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void Cond_End(void);
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extern Boolean skipLine;
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#endif /* cond_h_6e96ad7c */
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