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Reflection values.

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R=rsc
DELTA=206  (79 added, 25 deleted, 102 changed)
OCL=17652
CL=17669
This commit is contained in:
Rob Pike 2008-10-22 16:48:17 -07:00
parent 7dbee69b58
commit 34b8873722
3 changed files with 177 additions and 123 deletions
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58
usr/r/reflect/main.go
View file

@ -10,7 +10,7 @@ import (
func typedump(s string) {
t := reflect.ParseTypeString("", s);
print(reflect.TypeToString(t),"; size = ", t.Size(), "\n");
print(reflect.TypeToString(t, true),"; size = ", t.Size(), "\n");
}
func valuedump(s string) {
@ -45,12 +45,13 @@ func valuedump(s string) {
export type empty interface {}
export type T struct { a int; b float64 }
export type T struct { a int; b float64; c string; d *int }
func main() {
var s string;
var t reflect.Type;
if false{
typedump("int8");
typedump("int16");
typedump("int32");
@ -77,7 +78,7 @@ func main() {
typedump("struct {a int8; b int8; c int8; b int32}");
typedump("struct {a int8; b int8; c int8; d int8; b int32}");
typedump("struct {a int8; b int8; c int8; d int8; e int8; b int32}");
valuedump("int8");
valuedump("int16");
valuedump("int32");
@ -105,9 +106,50 @@ func main() {
valuedump("struct {a int8; b int8; c int8; b int32}");
valuedump("struct {a int8; b int8; c int8; d int8; b int32}");
valuedump("struct {a int8; b int8; c int8; d int8; e int8; b int32}");
v := new(T);
a, b := sys.reflect(v.(empty));
println(a, b);
typedump(b);
}
{ var tmp = 123;
value := reflect.NewValue(tmp);
println(reflect.ValueToString(value));
}
{ var tmp = 123.4;
value := reflect.NewValue(tmp);
println(reflect.ValueToString(value));
}
{ var tmp = "abc";
value := reflect.NewValue(tmp);
println(reflect.ValueToString(value));
}
{
var i int = 7;
var tmp = &T{123, 456.0, "hello", &i};
value := reflect.NewValue(tmp);
println(reflect.ValueToString(value.(reflect.PtrValue).Sub()));
}
{
type C chan *T; // TODO: should not be necessary
var tmp = new(C);
value := reflect.NewValue(tmp);
println(reflect.ValueToString(value));
}
{
type A [10]int;
var tmp A = A{1,2,3,4,5,6,7,8,9,10};
value := reflect.NewValue(&tmp);
println(reflect.TypeToString(value.Type().(reflect.PtrType).Sub(), true));
println(reflect.TypeToString(value.(reflect.PtrValue).Sub().Type(), true));
println(reflect.ValueToString(value.(reflect.PtrValue).Sub()));
value.(reflect.PtrValue).Sub().(reflect.ArrayValue).Elem(4).(reflect.Int32Value).Put(123);
println(reflect.ValueToString(value.(reflect.PtrValue).Sub()));
}
{
type AA []int;
tmp1 := [10]int{1,2,3,4,5,6,7,8,9,10};
var tmp *AA = &tmp1;
value := reflect.NewValue(tmp);
println(reflect.TypeToString(value.Type().(reflect.PtrType).Sub(), true));
println(reflect.TypeToString(value.(reflect.PtrValue).Sub().Type(), true));
println(reflect.ValueToString(value.(reflect.PtrValue).Sub()));
value.(reflect.PtrValue).Sub().(reflect.ArrayValue).Elem(4).(reflect.Int32Value).Put(123);
println(reflect.ValueToString(value.(reflect.PtrValue).Sub()));
}
}