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proc/variables: fill Len field of maps when recursion limit is reached (#834)

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If we don't fill the Len field there will be no way for the user to
distinguish maps we didn't load from empty maps.
This commit is contained in:
Alessandro Arzilli
2017-05-30 23:26:10 +02:00
committed by Derek Parker
parent a4df01e105
commit d8bb8ed5bf
3 changed files with 11 additions and 1 deletions
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8
_fixtures/testvariables2.go
View File

@ -85,6 +85,10 @@ type Item struct {
type Menu []Item
type truncatedMap struct {
v []map[string]astruct
}
func main() {
i1 := 1
i2 := 2
@ -223,6 +227,8 @@ func main() {
zsvar := struct{}{}
zsslice := make([]struct{}, 3)
zsvmap := map[string]struct{}{"testkey": struct{}{}}
var tm truncatedMap
tm.v = []map[string]astruct{m1}
var amb1 = 1
runtime.Breakpoint()
@ -231,5 +237,5 @@ func main() {
}
runtime.Breakpoint()
fmt.Println(i1, i2, i3, p1, amb1, s1, s3, a1, p2, p3, s2, as1, str1, f1, fn1, fn2, nilslice, nilptr, ch1, chnil, m1, mnil, m2, m3, up1, i4, i5, i6, err1, err2, errnil, iface1, iface2, ifacenil, arr1, parr, cpx1, const1, iface3, iface4, recursive1, recursive1.x, iface5, iface2fn1, iface2fn2, bencharr, benchparr, mapinf, mainMenu, b, b2, sd, anonstruct1, anonstruct2, anoniface1, anonfunc, mapanonstruct1, ifacearr, efacearr, ni8, ni16, ni32, pinf, ninf, nan, zsvmap, zsslice, zsvar)
fmt.Println(i1, i2, i3, p1, amb1, s1, s3, a1, p2, p3, s2, as1, str1, f1, fn1, fn2, nilslice, nilptr, ch1, chnil, m1, mnil, m2, m3, up1, i4, i5, i6, err1, err2, errnil, iface1, iface2, ifacenil, arr1, parr, cpx1, const1, iface3, iface4, recursive1, recursive1.x, iface5, iface2fn1, iface2fn2, bencharr, benchparr, mapinf, mainMenu, b, b2, sd, anonstruct1, anonstruct2, anoniface1, anonfunc, mapanonstruct1, ifacearr, efacearr, ni8, ni16, ni32, pinf, ninf, nan, zsvmap, zsslice, zsvar, tm)
}

3
pkg/proc/variables.go
View File

@ -824,6 +824,9 @@ func (v *Variable) loadValueInternal(recurseLevel int, cfg LoadConfig) {
case reflect.Map:
if recurseLevel <= cfg.MaxVariableRecurse {
v.loadMap(recurseLevel, cfg)
} else {
// loads length so that the client knows that the map isn't empty
v.mapIterator()
}
case reflect.String:

1
service/test/variables_test.go
View File

@ -694,6 +694,7 @@ func TestEvalExpression(t *testing.T) {
{"zsslice", false, `[]struct {} len: 3, cap: 3, [{},{},{}]`, `[]struct {} len: 3, cap: 3, [...]`, "[]struct {}", nil},
{"zsvmap", false, `map[string]struct {} ["testkey": {}, ]`, `map[string]struct {} [...]`, "map[string]struct {}", nil},
{"tm", false, "main.truncatedMap {v: []map[string]main.astruct len: 1, cap: 1, [[...]]}", "main.truncatedMap {v: []map[string]main.astruct len: 1, cap: 1, [...]}", "main.truncatedMap", nil},
}
ver, _ := proc.ParseVersionString(runtime.Version())