diff options
Diffstat (limited to 'libgo/go/cmd/gofmt/testdata/typeswitch.input')
-rw-r--r-- | libgo/go/cmd/gofmt/testdata/typeswitch.input | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/libgo/go/cmd/gofmt/testdata/typeswitch.input b/libgo/go/cmd/gofmt/testdata/typeswitch.input new file mode 100644 index 0000000000..8f8cba9b85 --- /dev/null +++ b/libgo/go/cmd/gofmt/testdata/typeswitch.input @@ -0,0 +1,60 @@ +/* + 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 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 + } + */ +} |