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| Original file line number | Original file line | Diff line number | Diff line change |
|---|---|---|---|
| @@ -0,0 +1,142 @@ | |||
| // +build js | |||
| // +build !go1.11.1 | |||
|
|
|||
| package reflect | |||
|
|
|||
| import ( | |||
| "unsafe" | |||
|
|
|||
| "github.com/gopherjs/gopherjs/js" | |||
| ) | |||
|
|
|||
| func methodReceiver(op string, v Value, i int) (_, t *rtype, fn unsafe.Pointer) { | |||
| var prop string | |||
| if v.typ.Kind() == Interface { | |||
| tt := (*interfaceType)(unsafe.Pointer(v.typ)) | |||
| if i < 0 || i >= len(tt.methods) { | |||
| panic("reflect: internal error: invalid method index") | |||
| } | |||
| m := &tt.methods[i] | |||
| if !tt.nameOff(m.name).isExported() { | |||
| panic("reflect: " + op + " of unexported method") | |||
| } | |||
| t = tt.typeOff(m.typ) | |||
| prop = tt.nameOff(m.name).name() | |||
| } else { | |||
| ms := v.typ.exportedMethods() | |||
| if uint(i) >= uint(len(ms)) { | |||
| panic("reflect: internal error: invalid method index") | |||
| } | |||
| m := ms[i] | |||
| if !v.typ.nameOff(m.name).isExported() { | |||
| panic("reflect: " + op + " of unexported method") | |||
| } | |||
| t = v.typ.typeOff(m.mtyp) | |||
| prop = js.Global.Call("$methodSet", jsType(v.typ)).Index(i).Get("prop").String() | |||
| } | |||
| rcvr := v.object() | |||
| if isWrapped(v.typ) { | |||
| rcvr = jsType(v.typ).New(rcvr) | |||
| } | |||
| fn = unsafe.Pointer(rcvr.Get(prop).Unsafe()) | |||
| return | |||
| } | |||
|
|
|||
| func (v Value) call(op string, in []Value) []Value { | |||
| var ( | |||
| t *rtype | |||
| fn unsafe.Pointer | |||
| rcvr *js.Object | |||
| ) | |||
| if v.flag&flagMethod != 0 { | |||
| _, t, fn = methodReceiver(op, v, int(v.flag)>>flagMethodShift) | |||
| rcvr = v.object() | |||
| if isWrapped(v.typ) { | |||
| rcvr = jsType(v.typ).New(rcvr) | |||
| } | |||
| } else { | |||
| t = v.typ | |||
| fn = unsafe.Pointer(v.object().Unsafe()) | |||
| rcvr = js.Undefined | |||
| } | |||
|
|
|||
| if fn == nil { | |||
| panic("reflect.Value.Call: call of nil function") | |||
| } | |||
|
|
|||
| isSlice := op == "CallSlice" | |||
| n := t.NumIn() | |||
| if isSlice { | |||
| if !t.IsVariadic() { | |||
| panic("reflect: CallSlice of non-variadic function") | |||
| } | |||
| if len(in) < n { | |||
| panic("reflect: CallSlice with too few input arguments") | |||
| } | |||
| if len(in) > n { | |||
| panic("reflect: CallSlice with too many input arguments") | |||
| } | |||
| } else { | |||
| if t.IsVariadic() { | |||
| n-- | |||
| } | |||
| if len(in) < n { | |||
| panic("reflect: Call with too few input arguments") | |||
| } | |||
| if !t.IsVariadic() && len(in) > n { | |||
| panic("reflect: Call with too many input arguments") | |||
| } | |||
| } | |||
| for _, x := range in { | |||
| if x.Kind() == Invalid { | |||
| panic("reflect: " + op + " using zero Value argument") | |||
| } | |||
| } | |||
| for i := 0; i < n; i++ { | |||
| if xt, targ := in[i].Type(), t.In(i); !xt.AssignableTo(targ) { | |||
| panic("reflect: " + op + " using " + xt.String() + " as type " + targ.String()) | |||
| } | |||
| } | |||
| if !isSlice && t.IsVariadic() { | |||
| // prepare slice for remaining values | |||
| m := len(in) - n | |||
| slice := MakeSlice(t.In(n), m, m) | |||
| elem := t.In(n).Elem() | |||
| for i := 0; i < m; i++ { | |||
| x := in[n+i] | |||
| if xt := x.Type(); !xt.AssignableTo(elem) { | |||
| panic("reflect: cannot use " + xt.String() + " as type " + elem.String() + " in " + op) | |||
| } | |||
| slice.Index(i).Set(x) | |||
| } | |||
| origIn := in | |||
| in = make([]Value, n+1) | |||
| copy(in[:n], origIn) | |||
| in[n] = slice | |||
| } | |||
|
|
|||
| nin := len(in) | |||
| if nin != t.NumIn() { | |||
| panic("reflect.Value.Call: wrong argument count") | |||
| } | |||
| nout := t.NumOut() | |||
|
|
|||
| argsArray := js.Global.Get("Array").New(t.NumIn()) | |||
| for i, arg := range in { | |||
| argsArray.SetIndex(i, unwrapJsObject(t.In(i), arg.assignTo("reflect.Value.Call", t.In(i).common(), nil).object())) | |||
| } | |||
| results := callHelper(js.InternalObject(fn), rcvr, argsArray) | |||
|
|
|||
| switch nout { | |||
| case 0: | |||
| return nil | |||
| case 1: | |||
| return []Value{makeValue(t.Out(0), wrapJsObject(t.Out(0), results), 0)} | |||
| default: | |||
| ret := make([]Value, nout) | |||
| for i := range ret { | |||
| ret[i] = makeValue(t.Out(i), wrapJsObject(t.Out(i), results.Index(i)), 0) | |||
| } | |||
| return ret | |||
| } | |||
| } | |||
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