go conversions0 源码
golang conversions0 代码
文件路径：/src/go/types/testdata/check/conversions0.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.
// conversions
package conversions
import "unsafe"
// argument count
var (
_ = int() /* ERROR "missing argument" */
_ = int(1, 2 /* ERROR "too many arguments" */ )
)
// numeric constant conversions are in const1.src.
func string_conversions() {
const A = string(65)
assert(A == "A")
const E = string(-1)
assert(E == "\uFFFD")
assert(E == string(1234567890))
type myint int
assert(A == string(myint(65)))
type mystring string
const _ mystring = mystring("foo")
const _ = string(true /* ERROR "cannot convert" */ )
const _ = string(1.2 /* ERROR "cannot convert" */ )
const _ = string(nil /* ERROR "cannot convert" */ )
// issues 11357, 11353: argument must be of integer type
_ = string(0.0 /* ERROR "cannot convert" */ )
_ = string(0i /* ERROR "cannot convert" */ )
_ = string(1 /* ERROR "cannot convert" */ + 2i)
}
func interface_conversions() {
type E interface{}
type I1 interface{
m1()
}
type I2 interface{
m1()
m2(x int)
}
type I3 interface{
m1()
m2() int
}
var e E
var i1 I1
var i2 I2
var i3 I3
_ = E(0)
_ = E(nil)
_ = E(e)
_ = E(i1)
_ = E(i2)
_ = I1(0 /* ERROR "cannot convert" */ )
_ = I1(nil)
_ = I1(i1)
_ = I1(e /* ERROR "cannot convert" */ )
_ = I1(i2)
_ = I2(nil)
_ = I2(i1 /* ERROR "cannot convert" */ )
_ = I2(i2)
_ = I2(i3 /* ERROR "cannot convert" */ )
_ = I3(nil)
_ = I3(i1 /* ERROR "cannot convert" */ )
_ = I3(i2 /* ERROR "cannot convert" */ )
_ = I3(i3)
// TODO(gri) add more tests, improve error message
}
func issue6326() {
type T unsafe.Pointer
var x T
_ = uintptr(x) // see issue 6326
}
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