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/*
Parenthesized type switch expressions originally
accepted by gofmt must continue to be rewritten
into the correct unparenthesized form.
Only type-switches that didn't declare a variable
in the the type switch type assertion and which
contained only "expression-like" (named) types in their
cases were permitted to have their type assertion parenthesized
by go/parser (due to a weak predicate in the parser). All others
were rejected always, either with a syntax error in the
type switch header or in the case.
See also issue 4470.
*/
package p
func f() {
var x interface{}
switch x.(type) { // should remain the same
}
switch x.(type) { // should become: switch x.(type) {
}
switch x.(type) { // should remain the same
case int:
}
switch x.(type) { // should become: switch x.(type) {
case int:
}
switch x.(type) { // should remain the same
case []int:
}
// Parenthesized (x.(type)) in type switches containing cases
// with unnamed (literal) types were never permitted by gofmt;
// thus there won't be any code in the wild using this style if
// the code was gofmt-ed.
/*
switch (x.(type)) {
case []int:
}
*/
switch t := x.(type) { // should remain the same
default:
_ = t
}
// Parenthesized (x.(type)) in type switches declaring a variable
// were never permitted by gofmt; thus there won't be any code in
// the wild using this style if the code was gofmt-ed.
/*
switch t := (x.(type)) {
default:
_ = t
}
*/
}
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