xref: /src/tests/usr.bin/indent/lsym_case_label.c

/* $NetBSD: lsym_case_label.c,v 1.8 2023/06/04 18:58:30 rillig Exp $ */

/*
 * Tests for the tokens lsym_case and lsym_default, which represent the
 * keywords 'case' and 'default', which are both used in 'switch' statements.
 *
 * Since C11, the keyword 'default' is used in _Generic selections as well.
 *
 * See also:
 *	opt_cli.c
 *	psym_switch_expr.c
 *	C11 6.5.1.1		"Generic selection"
 */

/*
 * A case label can be used in a 'switch' statement.
 */
//indent input
void function(void){switch(expr){case 1:;case 2:break;default:switch(inner){case 4:break;}}}
//indent end

//indent run
void
function(void)
{
	switch (expr) {
	case 1:	;
	case 2:
		break;
	default:
		switch (inner) {
		case 4:
			break;
		}
	}
}
//indent end


/*
 * If there is a '{' after a case label, it gets indented using tabs instead
 * of spaces. Indent does not necessarily insert a space in this situation,
 * which looks strange.
 */
//indent input
void
function(void)
{
	switch (expr) {
	case 1: {
		break;
	}
	case 11: {
		break;
	}
	}
}
//indent end

//indent run
void
function(void)
{
	switch (expr) {
	/* $ The space between the ':' and the '{' is actually a tab. */
	case 1:	{
			break;
		}
	case 11: {
			break;
		}
	}
}
//indent end


/*
 * Since C11, the _Generic selection expression allows a switch on the data
 * type of an expression.
 */
//indent input
const char *type_name = _Generic(
	' ',
	int: "character constants have type 'int'",
	char: "character constants have type 'char'",
	default: "character constants have some other type"
);
//indent end

//indent run -di0
const char *type_name = _Generic(
// $ XXX: It's strange to align the arguments at the parenthesis even though
// $ XXX: the first argument is already on a separate line.
				 ' ',
// $ TODO: indent the type names
int:				 "character constants have type 'int'",
char:				 "character constants have type 'char'",
default:
// $ TODO: remove the newline after 'default:'
				 "character constants have some other type"
);
//indent end

//indent run -di0 -nlp
const char *type_name = _Generic(
	' ',
// $ TODO: indent the type names
int:	"character constants have type 'int'",
char:	"character constants have type 'char'",
default:
	"character constants have some other type"
);
//indent end