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make(1): document enum GetLineMode

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rillig 2020-12-19 12:48:59 +00:00
parent 959dba2f43
commit 4a31d445af
1 changed files with 24 additions and 2 deletions
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26
usr.bin/make/parse.c
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@ -1,4 +1,4 @@
/* $NetBSD: parse.c,v 1.494 2020/12/19 12:24:46 rillig Exp $ */
/* $NetBSD: parse.c,v 1.495 2020/12/19 12:48:59 rillig Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1993
@ -117,7 +117,7 @@
#include "pathnames.h"
/* "@(#)parse.c 8.3 (Berkeley) 3/19/94" */
MAKE_RCSID("$NetBSD: parse.c,v 1.494 2020/12/19 12:24:46 rillig Exp $");
MAKE_RCSID("$NetBSD: parse.c,v 1.495 2020/12/19 12:48:59 rillig Exp $");
/* types and constants */
@ -2790,8 +2790,30 @@ UnescapeBackslash(char *const line, char *start)
}
typedef enum GetLineMode {
/*
* Return the next logical line that is neither empty nor a comment.
* Backslash line continuations are folded into a single space.
* A trailing comment, if any, is discarded.
*/
PARSE_NORMAL,
/*
* Return the next physical line, even if it ends with a backslash.
* Comments and empty lines are preserved.
*
* Used in .for loops to collect the body of the loop while waiting
* for the corresponding .endfor.
*/
PARSE_RAW,
/*
* Return the next logical line that is a directive.
* Backslash line continuations are folded into a single space.
* A trailing comment, if any, is discarded.
*
* Used in .if directives to skip over irrelevant branches while
* waiting for the corresponding .endif.
*/
PARSE_SKIP
} GetLineMode;