mirror of
https://github.com/golang/go
synced 2024-10-01 16:28:33 -06:00
3371b79a96
(reflect.Value).Send
(reflect.Value).TrySend
(reflect.Value).Recv
(reflect.Value).TryRecv
(reflect.Type).ChanOf
(reflect.Type).In
(reflect.Type).Out
reflect.Indirect
reflect.MakeChan
Also:
- specialize genInvoke when the receiver is a reflect.Type under the
assumption that there's only one possible concrete type. This
makes all reflect.Type operations context-sensitive since the calls
are no longer dynamic.
- Rename all variables to match the actual parameter names used in
the reflect API.
- Add pointer.Config.Reflection flag
(exposed in oracle as --reflect, default false) to enable reflection.
It currently adds about 20% running time. I'll make it true after
the presolver is implemented.
- Simplified worklist datatype and solver main loop slightly
(~10% speed improvement).
- Use addLabel() utility to add a label to a PTS.
(Working on my 3 yr old 2x2GHz+4GB Mac vs 8x4GHz+24GB workstation,
one really notices the cost of pointer analysis.
Note to self: time to implement presolver.)
R=crawshaw
CC=golang-dev
https://golang.org/cl/13242062
80 lines
2.4 KiB
Go
80 lines
2.4 KiB
Go
// +build ignore
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package main
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// Test of maps with reflection.
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import "reflect"
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var a int
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var b bool
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func reflectMapKeysIndex() {
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m := make(map[*int]*bool) // @line mr1make
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m[&a] = &b
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mrv := reflect.ValueOf(m)
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print(mrv.Interface()) // @types map[*int]*bool
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print(mrv.Interface().(map[*int]*bool)) // @pointsto makemap@mr1make:11
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print(mrv) // @pointsto makeinterface:map[*int]*bool
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print(mrv) // @types map[*int]*bool
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keys := mrv.MapKeys()
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print(keys) // @pointsto <alloc in (reflect.Value).MapKeys>
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for _, k := range keys {
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print(k) // @pointsto <alloc in (reflect.Value).MapKeys>
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print(k) // @types *int
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print(k.Interface()) // @types *int
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print(k.Interface().(*int)) // @pointsto main.a
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v := mrv.MapIndex(k)
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print(v.Interface()) // @types *bool
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print(v.Interface().(*bool)) // @pointsto main.b
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}
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}
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func reflectSetMapIndex() {
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m := make(map[*int]*bool)
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mrv := reflect.ValueOf(m)
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mrv.SetMapIndex(reflect.ValueOf(&a), reflect.ValueOf(&b))
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print(m[nil]) // @pointsto main.b
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for _, k := range mrv.MapKeys() {
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print(k.Interface()) // @types *int
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print(k.Interface().(*int)) // @pointsto main.a
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}
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tmap := reflect.TypeOf(m)
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// types.EvalNode won't let us refer to non-exported types:
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// print(tmap) // #@types *reflect.rtype
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print(tmap) // @pointsto map[*int]*bool
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zmap := reflect.Zero(tmap)
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print(zmap) // @pointsto <alloc in reflect.Zero>
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print(zmap.Interface()) // @pointsto <alloc in reflect.Zero>
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print(tmap.Key()) // @pointsto *int
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print(tmap.Elem()) // @pointsto *bool
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print(reflect.Zero(tmap.Key())) // @pointsto <alloc in reflect.Zero>
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print(reflect.Zero(tmap.Key()).Interface()) // @pointsto <alloc in reflect.Zero>
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print(reflect.Zero(tmap.Key()).Interface()) // @types *int
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print(reflect.Zero(tmap.Elem())) // @pointsto <alloc in reflect.Zero>
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print(reflect.Zero(tmap.Elem()).Interface()) // @pointsto <alloc in reflect.Zero>
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print(reflect.Zero(tmap.Elem()).Interface()) // @types *bool
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}
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func reflectMakeMap() {
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t := reflect.TypeOf(map[*int]*bool(nil))
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v := reflect.MakeMap(t)
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print(v) // @types map[*int]*bool
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print(v) // @pointsto <alloc in reflect.MakeMap>
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}
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func main() {
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reflectMapKeysIndex()
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reflectSetMapIndex()
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reflectMakeMap()
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// TODO(adonovan): reflect.MapOf(Type)
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}
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