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runtime: update for error

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R=golang-dev, iant, r
CC=golang-dev
https://golang.org/cl/5306075
This commit is contained in:
Russ Cox 2011-11-01 21:48:27 -04:00
parent e67d3c44f7
commit c14f71c788
1 changed files with 5 additions and 3 deletions
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8
src/pkg/runtime/error.go
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@ -6,7 +6,7 @@ package runtime
// The Error interface identifies a run time error. // The Error interface identifies a run time error.
type Error interface { type Error interface {
String() string error
// RuntimeError is a no-op function but // RuntimeError is a no-op function but
// serves to distinguish types that are runtime // serves to distinguish types that are runtime
@ -28,7 +28,7 @@ type TypeAssertionError struct {
func (*TypeAssertionError) RuntimeError() {} func (*TypeAssertionError) RuntimeError() {}
func (e *TypeAssertionError) String() string { func (e *TypeAssertionError) Error() string {
inter := e.interfaceString inter := e.interfaceString
if inter == "" { if inter == "" {
inter = "interface" inter = "interface"
@ -98,7 +98,7 @@ type errorString string
func (e errorString) RuntimeError() {} func (e errorString) RuntimeError() {}
func (e errorString) String() string { func (e errorString) Error() string {
return "runtime error: " + string(e) return "runtime error: " + string(e)
} }
@ -123,6 +123,8 @@ func printany(i interface{}) {
print("nil") print("nil")
case stringer: case stringer:
print(v.String()) print(v.String())
case error:
print(v.Error())
case int: case int:
print(v) print(v)
case string: case string: