opt_eei.c revision 1.6 
1/* $NetBSD: opt_eei.c,v 1.6 2021/11/20 16:54:17 rillig Exp $ */
2/* $FreeBSD$ */
3
4/*
5 * Tests for the options '-eei' and '-neei'.
6 *
7 * The option '-eei' enables extra indentation on continuation lines of the
8 * expression part of 'if' and 'while' statements. These continuation lines
9 * are indented one extra level.
10 *
11 * The option '-neei' indents these conditions in the same way as all other
12 * continued statements.
13 */
14
15#indent input
16bool
17less(int a, int b)
18{
19	if (a <
20	    b)
21		return true;
22	if (a
23	    <
24	    b)
25		return true;
26}
27#indent end
28
29#indent run -eei
30bool
31less(int a, int b)
32{
33	if (a <
34			b)
35		return true;
36	if (a
37			<
38			b)
39		return true;
40}
41#indent end
42
43#indent run-equals-input -neei
44
45/*
46 * When a single indentation level is the same as the continuation
47 * indentation, the code does not clearly show whether the 'b' belongs to the
48 * condition or the body statement.
49 */
50#indent run -neei -i4
51bool
52less(int a, int b)
53{
54    if (a <
55	b)
56	return true;
57    if (a
58	<
59	b)
60	return true;
61}
62#indent end
63
64/*
65 * Adding the extra level of indentation is useful when the standard
66 * indentation is the same as the indentation of statement continuations. In
67 * such a case, the continued condition would have the same indentation as the
68 * following statement, which would be confusing.
69 */
70#indent run -eei -i4
71bool
72less(int a, int b)
73{
74    if (a <
75	    b)
76	return true;
77    if (a
78	    <
79	    b)
80	return true;
81}
82#indent end
83
84/*
85 * With an indentation size of 4, the width of the code 'if (' is exactly one
86 * indentation level. With the option '-nlp', the option '-eei' has no effect.
87 *
88 * XXX: This is unexpected since this creates the exact ambiguity that the
89 * option '-eei' is supposed to prevent.
90 */
91#indent run -eei -i4 -nlp
92bool
93less(int a, int b)
94{
95    if (a <
96	b)
97	return true;
98    if (a
99	<
100	b)
101	return true;
102}
103#indent end
104
105
106/*
107 * The option '-eei' applies no matter whether the continued expression starts
108 * with a word or an operator like '&&'. The latter cannot start a statement,
109 * so there would be no ambiguity.
110 */
111#indent input
112{
113	if (a
114&& b)
115	    stmt();
116}
117#indent end
118
119/*
120 * XXX: The extra indentation is unnecessary since there is no possible
121 * confusion: the standard indentation is 8, the indentation of the continued
122 * condition could have stayed at 4.
123 */
124#indent run -eei
125{
126	if (a
127			&& b)
128		stmt();
129}
130#indent end
131
132/*
133 * The extra indentation is necessary here since otherwise the '&&' and the
134 * 'stmt()' would start at the same indentation.
135 */
136#indent run -eei -i4
137{
138    if (a
139	    && b)
140	stmt();
141}
142#indent end
143
144/*
145 * With an indentation size of 4, the width of the code 'if (' is exactly one
146 * indentation level. With the option '-nlp', the option '-eei' has no effect.
147 *
148 * XXX: This is unexpected since this creates the exact ambiguity that the
149 * option '-eei' is supposed to prevent.
150 */
151#indent run -eei -i4 -nlp
152{
153    if (a
154	&& b)
155	stmt();
156}
157#indent end
158