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assorted cleanup and fixes

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R=r
DELTA=209  (109 added, 79 deleted, 21 changed)
OCL=20930
CL=20934
This commit is contained in:
Russ Cox 2008-12-10 15:55:59 -08:00
parent a238087aa2
commit d0e30cdaa9
8 changed files with 128 additions and 98 deletions
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47
src/lib/reflect/value.go
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@ -14,6 +14,10 @@ import (
type Addr unsafe.pointer // TODO: where are ptrint/intptr etc?
func EqualType(a, b Type) bool {
return a.String() == b.String()
}
export type Value interface {
Kind() int;
Type() Type;
@ -490,11 +494,12 @@ func (v *PtrValueStruct) Sub() Value {
return NewValueAddr(v.typ.(PtrType).Sub(), v.Get());
}
func (v *PtrValueStruct) SetSub(subv Value) {
a := v.typ.(PtrType).Sub().String();
b := subv.Type().String();
if a != b {
panicln("reflect: incompatible types in PtrValue.SetSub:", a, b);
func (v *PtrValueStruct) SetSub(subv Value) {
a := v.typ.(PtrType).Sub();
b := subv.Type();
if !EqualType(a, b) {
panicln("reflect: incompatible types in PtrValue.SetSub:",
a.String(), b.String());
}
*v.addr.(*Addr) = subv.Addr();
}
@ -806,6 +811,38 @@ export func NewOpenArrayValue(typ ArrayType, len, cap int) ArrayValue {
return NewValueAddr(typ, Addr(array));
}
export func CopyArray(dst ArrayValue, src ArrayValue, n int) {
if n == 0 {
return
}
dt := dst.Type().(ArrayType).Elem();
st := src.Type().(ArrayType).Elem();
if !EqualType(dt, st) {
panicln("reflect: incompatible types in CopyArray:",
dt.String(), st.String());
}
if n < 0 || n > dst.Len() || n > src.Len() {
panicln("reflect: CopyArray: invalid count", n);
}
dstp := uintptr(dst.Elem(0).Addr());
srcp := uintptr(src.Elem(0).Addr());
end := uintptr(n)*uintptr(dt.Size());
if dst.Type().Size() % 8 == 0 {
for i := uintptr(0); i < end; i += 8{
di := Addr(dstp + i);
si := Addr(srcp + i);
*di.(*uint64) = *si.(*uint64);
}
} else {
for i := uintptr(0); i < end; i++ {
di := Addr(dstp + i);
si := Addr(srcp + i);
*di.(*byte) = *si.(*byte);
}
}
}
export func NewValue(e interface {}) Value {
value, typestring := sys.reflect(e);
p, ok := typecache[typestring];