add support for variable formatters
R=rsc
DELTA=134 (75 added, 41 deleted, 18 changed)
OCL=27245
CL=27247
diff --git a/src/lib/reflect/value.go b/src/lib/reflect/value.go
index ad0cd46..af43de9 100644
--- a/src/lib/reflect/value.go
+++ b/src/lib/reflect/value.go
@@ -914,3 +914,17 @@
*ap = value;
return newValueAddr(typ, Addr(ap));
}
+
+// Indirect indirects one level through a value, if it is a pointer.
+// If not a pointer, the value is returned unchanged.
+// Useful when walking arbitrary data structures.
+func Indirect(v Value) Value {
+ if v.Kind() == PtrKind {
+ p := v.(PtrValue);
+ if p.Get() == nil {
+ return nil
+ }
+ v = p.Sub()
+ }
+ return v
+}
