opt_eei.c revision 1.9 
1/* $NetBSD: opt_eei.c,v 1.9 2023/05/15 12:11:07 rillig Exp $ */
2
3/*
4 * Tests for the options '-eei' and '-neei'.
5 *
6 * The option '-eei' enables extra indentation on continuation lines of the
7 * expression part of 'if' and 'while' statements. These continuation lines
8 * are indented one extra level to avoid being confused for the first
9 * statement of the body, even if the condition line starts with an operator
10 * such as '&&' or '<' that could not start a statement.
11 *
12 * The option '-neei' indents these conditions in the same way as all other
13 * continued statements.
14 */
15
16//indent input
17{
18	if (a <
19b)
20		stmt();
21	if (a
22<
23b)
24		stmt();
25	while (a
26< b)
27		stmt();
28	switch (
29		a)
30		stmt();
31}
32//indent end
33
34/*
35 * By default, continuation lines are aligned on parentheses, and only a
36 * multi-line switch statement would have ambiguous indentation.
37 */
38//indent run
39{
40	if (a <
41	    b)
42		stmt();
43	if (a
44	    <
45	    b)
46		stmt();
47	while (a
48	       < b)
49		stmt();
50	switch (
51		a)
52		stmt();
53}
54//indent end
55
56//indent run-equals-prev-output -neei
57
58/*
59 * For indentation 8, the only expression that needs to be disambiguated is
60 * the one from the switch statement.
61 */
62//indent run -eei
63{
64	if (a <
65/* $ XXX: No extra indentation necessary. */
66			b)
67		stmt();
68	if (a
69/* $ XXX: No extra indentation necessary. */
70			<
71/* $ XXX: No extra indentation necessary. */
72			b)
73		stmt();
74	while (a
75/* $ XXX: No extra indentation necessary. */
76			< b)
77		stmt();
78	switch (
79			a)
80		stmt();
81}
82//indent end
83
84/* For indentation 4, the expressions from the 'if' are ambiguous. */
85//indent run -neei -i4
86{
87    if (a <
88	b)
89	stmt();
90    if (a
91	<
92	b)
93	stmt();
94    while (a
95	   < b)
96	stmt();
97    switch (
98	    a)
99	stmt();
100}
101//indent end
102
103//indent run -eei -i4
104{
105    if (a <
106	    b)
107	stmt();
108    if (a
109	    <
110	    b)
111	stmt();
112    while (a
113/* $ XXX: No extra indentation necessary. */
114	    < b)
115	stmt();
116    switch (
117/* $ XXX: No extra indentation necessary. */
118	    a)
119	stmt();
120}
121//indent end
122
123/*
124 * The -nlp option uses a fixed indentation for continuation lines. The if
125 * statements are disambiguated.
126 */
127//indent run -eei -i4 -nlp
128{
129    if (a <
130/* $ FIXME: Needs extra indentation. */
131	b)
132	stmt();
133    if (a
134/* $ FIXME: Needs extra indentation. */
135	<
136/* $ FIXME: Needs extra indentation. */
137	b)
138	stmt();
139    while (a
140/* $ FIXME: Needs extra indentation. */
141	< b)
142	stmt();
143    switch (
144/* $ FIXME: Needs extra indentation. */
145	a)
146	stmt();
147}
148//indent end
149
150/* With a continuation indentation of 2, there is no ambiguity at all. */
151//indent run -eei -i6 -ci2 -nlp
152{
153      if (a <
154	b)
155	    stmt();
156      if (a
157	<
158	b)
159	    stmt();
160      while (a
161	< b)
162	    stmt();
163      switch (
164	a)
165	    stmt();
166}
167//indent end
168