Home | History | Annotate | Line # | Download | only in indent 
      1 /* $NetBSD: lsym_for.c,v 1.9 2023/06/26 20:23:40 rillig Exp $ */
      2 
      3 /*
      4  * Tests for the token lsym_for, which represents the keyword 'for' that
      5  * starts a 'for' loop.
      6  *
      7  * Most 'for' loops have 3 expressions in their head.  Each of these
      8  * expressions is optional though.
      9  *
     10  * When all 3 expressions are omitted, the 'for' loop is often called a
     11  * 'forever' loop.
     12  */
     13 
     14 //indent input
     15 void
     16 example(void)
     17 {
     18 	for (;;)
     19 		break;
     20 	for (var = value;;)
     21 		break;
     22 	for (; cond;)
     23 		break;
     24 	for (;; i++)
     25 		break;
     26 }
     27 //indent end
     28 
     29 //indent run-equals-input
     30 
     31 
     32 //indent input
     33 void
     34 function(void)
     35 {
     36 	for (int i = 0; i < 6; i++)
     37 		print_char("hello\n"[i]);
     38 	forever {
     39 		stmt();
     40 	}
     41 }
     42 //indent end
     43 
     44 //indent run-equals-input
     45 
     46 
     47 /*
     48  * Indent can cope with various syntax errors, which may be caused by
     49  * syntactic macros like 'forever' or 'foreach'.
     50  */
     51 //indent input
     52 #define forever for (;;)
     53 #define foreach(list, it) for (it = list.first; it != NULL; it = it->next)
     54 
     55 void
     56 function(void)
     57 {
     58 	forever
     59 		stmt();
     60 
     61 	forever {
     62 		stmt();
     63 	}
     64 
     65 /* $ No space after 'foreach' since it looks like a function name. */
     66 	foreach(list, it)
     67 		println(it->data);
     68 
     69 /* $ No space after 'foreach' since it looks like a function name. */
     70 	foreach(list, it) {
     71 		println(it->data);
     72 	}
     73 }
     74 //indent end
     75 
     76 //indent run-equals-input
     77 
     78 
     79 /*
     80  * Another variant of a 'for' loop, seen in sys/arch/arm/apple/apple_intc.c.
     81  */
     82 //indent input
     83 {
     84 	for (CPU_INFO_FOREACH(cii, ci)) {
     85 	}
     86 }
     87 //indent end
     88 
     89 //indent run-equals-input
     90 
     91 
     92 /* Ensure that the '*' after 'list_item' is a unary operator. */
     93 //indent input
     94 {
     95 	for (const list_item *i = first; i != NULL; i = i->next) {
     96 	}
     97 	for (list_item **i = first; i != NULL; i = i->next) {
     98 	}
     99 	for (list_item *const *i = first; i != NULL; i = i->next) {
    100 	}
    101 	for (const char *const *i = first; i != NULL; i = i->next) {
    102 	}
    103 }
    104 //indent end
    105 
    106 //indent run-equals-input
    107