golang decls2b 代码
文件路径：/src/cmd/compile/internal/types2/testdata/check/decls2/decls2b.go
/ Copyright 2012 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
/ method declarations
package decls2
import "io"
const pi = 3.1415
func (T1) m /* ERROR "already declared" */ () {}
func (T2) m(io.Writer) {}
type T3 struct {
f *T3
}
type T6 struct {
x int
}
func (t *T6) m1() int {
return t.x
}
func f() {
var t *T6
t.m1()
}
/ Double declarations across package files
const c_double /* ERROR "redeclared" */ = 0
type t_double /* ERROR "redeclared" */ int
var v_double /* ERROR "redeclared" */ int
func f_double /* ERROR "redeclared" */ () {}
/ Blank methods need to be type-checked.
/ Verify by checking that errors are reported.
func (T /* ERROR "undeclared" */ ) _() {}
func (T1) _(undeclared /* ERROR "undeclared" */ ) {}
func (T1) _() int { return "foo" /* ERROR "cannot use .* in return statement" */ }
/ Methods with undeclared receiver type can still be checked.
/ Verify by checking that errors are reported.
func (Foo /* ERROR "undeclared" */ ) m() {}
func (Foo /* ERROR "undeclared" */ ) m(undeclared /* ERROR "undeclared" */ ) {}
func (Foo /* ERROR "undeclared" */ ) m() int { return "foo" /* ERROR "cannot use .* in return statement" */ }
func (Foo /* ERROR "undeclared" */ ) _() {}
func (Foo /* ERROR "undeclared" */ ) _(undeclared /* ERROR "undeclared" */ ) {}
func (Foo /* ERROR "undeclared" */ ) _() int { return "foo" /* ERROR "cannot use .* in return statement" */ }
/ Receiver declarations are regular parameter lists;
/ receiver types may use parentheses, and the list
/ may have a trailing comma.
type T7 struct {}
func (T7) m1() {}
func ((T7)) m2() {}
func ((*T7)) m3() {}
func (x *(T7),) m4() {}
func (x (*(T7)),) m5() {}
func (x ((*((T7)))),) m6() {}
/ Check that methods with parenthesized receiver are actually present (issue #23130).
var (
_ = T7.m1
_ = T7.m2
_ = (*T7).m3
_ = (*T7).m4
_ = (*T7).m5
_ = (*T7).m6
)