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lint: add debug logging to the parser

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Even with -DDEBUG and -DYYDEBUG, the debug output is not detailed enough
to clearly see what happens.

Add some custom debug logging to the parser, mainly for demonstration
purposes, and also to find out how to fix the test d_struct_init_nested.
This commit is contained in:
rillig 2020-12-30 01:02:38 +00:00
parent dcab0392c7
commit 85b03529a9
1 changed files with 11 additions and 3 deletions
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14
usr.bin/xlint/lint1/cgram.y
View File

@ -1,5 +1,5 @@
%{
/* $NetBSD: cgram.y,v 1.116 2020/12/29 17:29:31 rillig Exp $ */
/* $NetBSD: cgram.y,v 1.117 2020/12/30 01:02:38 rillig Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved.
@ -35,7 +35,7 @@
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
__RCSID("$NetBSD: cgram.y,v 1.116 2020/12/29 17:29:31 rillig Exp $");
__RCSID("$NetBSD: cgram.y,v 1.117 2020/12/30 01:02:38 rillig Exp $");
#endif
#include <limits.h>
@ -102,10 +102,12 @@ static inline void RESTORE(const char *file, size_t line)
} else
CLRWFLGS(file, line);
}
#define cgram_debug(fmt, args...) printf("cgram_debug: " fmt "\n", ##args)
#else
#define CLRWFLGS(f, l) clrwflgs(), olwarn = LWARN_BAD
#define SAVE(f, l) olwarn = lwarn
#define RESTORE(f, l) (void)(olwarn == LWARN_BAD ? (clrwflgs(), 0) : (lwarn = olwarn))
#define cgram_debug(fmt, args...) (void)0
#endif
/* unbind the anonymous struct members from the struct */
@ -1315,7 +1317,11 @@ opt_asm_or_symbolrename: /* expect only one */
;
initializer:
init_assign_expr
{
cgram_debug("begin initializer");
} init_assign_expr {
cgram_debug("end initializer");
}
;
init_assign_expr:
@ -2018,9 +2024,11 @@ point:
identifier:
T_NAME {
$$ = $1;
cgram_debug("name '%s'", $$->sb_name);
}
| T_TYPENAME {
$$ = $1;
cgram_debug("typename '%s'", $$->sb_name);
}
;