opt_bacc.c revision 1.6 
1/* $NetBSD: opt_bacc.c,v 1.6 2021/11/19 22:24:29 rillig Exp $ */
2/* $FreeBSD$ */
3
4/*
5 * Tests for the options '-bacc' and '-nbacc' ("blank line around conditional
6 * compilation").
7 *
8 * The option '-bacc' forces a blank line around every conditional compilation
9 * block.  For example, in front of every #ifdef and after every #endif.
10 * Other blank lines surrounding such blocks are swallowed.
11 *
12 * The option '-nbacc' TODO.
13 */
14
15
16/* Example code without surrounding blank lines. */
17#indent input
18int		a;
19#if 0
20int		b;
21#endif
22int		c;
23#indent end
24
25/*
26 * XXX: As of 2021-11-19, the option -bacc has no effect on declarations since
27 * process_type resets blank_line_before unconditionally.
28 */
29#indent run -bacc
30int		a;
31/* $ FIXME: expecting a blank line here */
32#if 0
33int		b;
34#endif
35/* $ FIXME: expecting a blank line here */
36int		c;
37#indent end
38
39/*
40 * With '-nbacc' the code is unchanged since there are no blank lines to
41 * remove.
42 */
43#indent run-equals-input -nbacc
44
45
46/* Example code containing blank lines. */
47#indent input
48int		space_a;
49
50#if 0
51
52int		space_b;
53
54#endif
55
56int		space_c;
57#indent end
58
59#indent run -bacc
60int		space_a;
61/* $ FIXME: expecting a blank line here */
62#if 0
63
64/* $ FIXME: expecting NO blank line here */
65int		space_b;
66#endif
67
68int		space_c;
69#indent end
70
71/* The option '-nbacc' does not remove anything. */
72#indent run-equals-input -nbacc
73
74
75/*
76 * Preprocessing directives can also occur in function bodies.
77 */
78#indent input
79const char *
80os_name(void)
81{
82#if defined(__NetBSD__) || defined(__FreeBSD__)
83	return "BSD";
84#else
85	return "unknown";
86#endif
87}
88#indent end
89
90#indent run -bacc
91const char *
92os_name(void)
93{
94/* $ FIXME: expecting a blank line here. */
95#if defined(__NetBSD__) || defined(__FreeBSD__)
96/* $ FIXME: expecting NO blank line here. */
97
98	return "BSD";
99#else
100/* $ FIXME: expecting NO blank line here. */
101
102	return "unknown";
103#endif
104/* $ FIXME: expecting a blank line here. */
105}
106#indent end
107
108#indent run-equals-input -nbacc
109
110
111/*
112 * Test nested preprocessor directives.
113 */
114#indent input
115#if outer
116#if inner
117int decl;
118#endif
119#endif
120#indent end
121
122#indent run -di0 -bacc
123#if outer
124
125#if inner
126int decl;
127#endif
128
129#endif
130#indent end
131
132#indent run-equals-input -di0 -nbacc
133
134
135/*
136 * Test nested preprocessor directives that are interleaved with declarations.
137 */
138#indent input
139#ifdef outer
140int outer_above;
141#ifdef inner
142int inner;
143#endif
144int outer_below;
145#endif
146#indent end
147
148#indent run-equals-input -di0 -bacc
149#indent run-equals-input -di0 -nbacc
150