572 lines
16 KiB
Go
572 lines
16 KiB
Go
package docgen
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"go/ast"
|
|
"go/parser"
|
|
"go/token"
|
|
"net/http"
|
|
"path/filepath"
|
|
"reflect"
|
|
"strings"
|
|
"time"
|
|
"unicode"
|
|
|
|
"github.com/google/uuid"
|
|
blocks "github.com/ipfs/go-block-format"
|
|
"github.com/ipfs/go-cid"
|
|
"github.com/ipfs/go-graphsync"
|
|
textselector "github.com/ipld/go-ipld-selector-text-lite"
|
|
pubsub "github.com/libp2p/go-libp2p-pubsub"
|
|
"github.com/libp2p/go-libp2p/core/metrics"
|
|
"github.com/libp2p/go-libp2p/core/network"
|
|
"github.com/libp2p/go-libp2p/core/peer"
|
|
"github.com/libp2p/go-libp2p/core/protocol"
|
|
"github.com/multiformats/go-multiaddr"
|
|
|
|
"github.com/filecoin-project/go-address"
|
|
"github.com/filecoin-project/go-bitfield"
|
|
datatransfer "github.com/filecoin-project/go-data-transfer"
|
|
"github.com/filecoin-project/go-fil-markets/filestore"
|
|
"github.com/filecoin-project/go-fil-markets/retrievalmarket"
|
|
"github.com/filecoin-project/go-jsonrpc/auth"
|
|
"github.com/filecoin-project/go-state-types/abi"
|
|
"github.com/filecoin-project/go-state-types/builtin/v9/verifreg"
|
|
"github.com/filecoin-project/go-state-types/crypto"
|
|
"github.com/filecoin-project/go-state-types/exitcode"
|
|
|
|
"github.com/filecoin-project/lotus/api"
|
|
apitypes "github.com/filecoin-project/lotus/api/types"
|
|
"github.com/filecoin-project/lotus/api/v0api"
|
|
"github.com/filecoin-project/lotus/build"
|
|
"github.com/filecoin-project/lotus/chain/types"
|
|
"github.com/filecoin-project/lotus/node/modules/dtypes"
|
|
"github.com/filecoin-project/lotus/node/repo/imports"
|
|
sealing "github.com/filecoin-project/lotus/storage/pipeline"
|
|
"github.com/filecoin-project/lotus/storage/sealer/sealtasks"
|
|
"github.com/filecoin-project/lotus/storage/sealer/storiface"
|
|
)
|
|
|
|
var ExampleValues = map[reflect.Type]interface{}{
|
|
reflect.TypeOf(api.MinerSubsystem(0)): api.MinerSubsystem(1),
|
|
reflect.TypeOf(auth.Permission("")): auth.Permission("write"),
|
|
reflect.TypeOf(""): "string value",
|
|
reflect.TypeOf(uint64(42)): uint64(42),
|
|
reflect.TypeOf(byte(7)): byte(7),
|
|
reflect.TypeOf([]byte{}): []byte("byte array"),
|
|
}
|
|
|
|
func addExample(v interface{}) {
|
|
ExampleValues[reflect.TypeOf(v)] = v
|
|
}
|
|
|
|
func init() {
|
|
c, err := cid.Decode("bafy2bzacea3wsdh6y3a36tb3skempjoxqpuyompjbmfeyf34fi3uy6uue42v4")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
ExampleValues[reflect.TypeOf(c)] = c
|
|
|
|
c2, err := cid.Decode("bafy2bzacebp3shtrn43k7g3unredz7fxn4gj533d3o43tqn2p2ipxxhrvchve")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
tsk := types.NewTipSetKey(c, c2)
|
|
|
|
ExampleValues[reflect.TypeOf(tsk)] = tsk
|
|
|
|
addr, err := address.NewIDAddress(1234)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
ExampleValues[reflect.TypeOf(addr)] = addr
|
|
|
|
pid, err := peer.Decode("12D3KooWGzxzKZYveHXtpG6AsrUJBcWxHBFS2HsEoGTxrMLvKXtf")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
addExample(pid)
|
|
addExample(&pid)
|
|
|
|
storeIDExample := imports.ID(50)
|
|
textSelExample := textselector.Expression("Links/21/Hash/Links/42/Hash")
|
|
apiSelExample := api.Selector("Links/21/Hash/Links/42/Hash")
|
|
clientEvent := retrievalmarket.ClientEventDealAccepted
|
|
|
|
block := blocks.Block(&blocks.BasicBlock{})
|
|
ExampleValues[reflect.TypeOf(&block).Elem()] = block
|
|
|
|
addExample(bitfield.NewFromSet([]uint64{5}))
|
|
addExample(abi.RegisteredSealProof_StackedDrg32GiBV1_1)
|
|
addExample(abi.RegisteredPoStProof_StackedDrgWindow32GiBV1)
|
|
addExample(abi.ChainEpoch(10101))
|
|
addExample(crypto.SigTypeBLS)
|
|
addExample(types.KTBLS)
|
|
addExample(int64(9))
|
|
addExample(12.3)
|
|
addExample(123)
|
|
addExample(uintptr(0))
|
|
addExample(abi.MethodNum(1))
|
|
addExample(exitcode.ExitCode(0))
|
|
addExample(crypto.DomainSeparationTag_ElectionProofProduction)
|
|
addExample(true)
|
|
addExample(abi.UnpaddedPieceSize(1024))
|
|
addExample(abi.UnpaddedPieceSize(1024).Padded())
|
|
addExample(abi.DealID(5432))
|
|
addExample(abi.SectorNumber(9))
|
|
addExample(abi.SectorSize(32 * 1024 * 1024 * 1024))
|
|
addExample(api.MpoolChange(0))
|
|
addExample(network.Connected)
|
|
addExample(dtypes.NetworkName("lotus"))
|
|
addExample(api.SyncStateStage(1))
|
|
addExample(api.FullAPIVersion1)
|
|
addExample(api.PCHInbound)
|
|
addExample(time.Minute)
|
|
addExample(graphsync.NewRequestID())
|
|
addExample(datatransfer.TransferID(3))
|
|
addExample(datatransfer.Ongoing)
|
|
addExample(storeIDExample)
|
|
addExample(&storeIDExample)
|
|
addExample(clientEvent)
|
|
addExample(&clientEvent)
|
|
addExample(retrievalmarket.ClientEventDealAccepted)
|
|
addExample(retrievalmarket.DealStatusNew)
|
|
addExample(&textSelExample)
|
|
addExample(&apiSelExample)
|
|
addExample(network.ReachabilityPublic)
|
|
addExample(build.TestNetworkVersion)
|
|
allocationId := verifreg.AllocationId(0)
|
|
addExample(allocationId)
|
|
addExample(&allocationId)
|
|
addExample(map[verifreg.AllocationId]verifreg.Allocation{})
|
|
claimId := verifreg.ClaimId(0)
|
|
addExample(claimId)
|
|
addExample(&claimId)
|
|
addExample(map[verifreg.ClaimId]verifreg.Claim{})
|
|
addExample(map[string]int{"name": 42})
|
|
addExample(map[string]time.Time{"name": time.Unix(1615243938, 0).UTC()})
|
|
addExample(&types.ExecutionTrace{
|
|
Msg: ExampleValue("init", reflect.TypeOf(&types.Message{}), nil).(*types.Message),
|
|
MsgRct: ExampleValue("init", reflect.TypeOf(&types.MessageReceipt{}), nil).(*types.MessageReceipt),
|
|
})
|
|
addExample(map[string]types.Actor{
|
|
"t01236": ExampleValue("init", reflect.TypeOf(types.Actor{}), nil).(types.Actor),
|
|
})
|
|
addExample(map[string]api.MarketDeal{
|
|
"t026363": ExampleValue("init", reflect.TypeOf(api.MarketDeal{}), nil).(api.MarketDeal),
|
|
})
|
|
addExample(map[string]*api.MarketDeal{
|
|
"t026363": ExampleValue("init", reflect.TypeOf(&api.MarketDeal{}), nil).(*api.MarketDeal),
|
|
})
|
|
|
|
addExample(map[string]api.MarketBalance{
|
|
"t026363": ExampleValue("init", reflect.TypeOf(api.MarketBalance{}), nil).(api.MarketBalance),
|
|
})
|
|
addExample(map[string]*pubsub.TopicScoreSnapshot{
|
|
"/blocks": {
|
|
TimeInMesh: time.Minute,
|
|
FirstMessageDeliveries: 122,
|
|
MeshMessageDeliveries: 1234,
|
|
InvalidMessageDeliveries: 3,
|
|
},
|
|
})
|
|
addExample(map[string]metrics.Stats{
|
|
"12D3KooWSXmXLJmBR1M7i9RW9GQPNUhZSzXKzxDHWtAgNuJAbyEJ": {
|
|
RateIn: 100,
|
|
RateOut: 50,
|
|
TotalIn: 174000,
|
|
TotalOut: 12500,
|
|
},
|
|
})
|
|
addExample(map[protocol.ID]metrics.Stats{
|
|
"/fil/hello/1.0.0": {
|
|
RateIn: 100,
|
|
RateOut: 50,
|
|
TotalIn: 174000,
|
|
TotalOut: 12500,
|
|
},
|
|
})
|
|
|
|
maddr, err := multiaddr.NewMultiaddr("/ip4/52.36.61.156/tcp/1347/p2p/12D3KooWFETiESTf1v4PGUvtnxMAcEFMzLZbJGg4tjWfGEimYior")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
// because reflect.TypeOf(maddr) returns the concrete type...
|
|
ExampleValues[reflect.TypeOf(struct{ A multiaddr.Multiaddr }{}).Field(0).Type] = maddr
|
|
|
|
// miner specific
|
|
addExample(filestore.Path(".lotusminer/fstmp123"))
|
|
si := uint64(12)
|
|
addExample(&si)
|
|
addExample(retrievalmarket.DealID(5))
|
|
addExample(abi.ActorID(1000))
|
|
addExample(map[string]cid.Cid{})
|
|
addExample(map[string][]api.SealedRef{
|
|
"98000": {
|
|
api.SealedRef{
|
|
SectorID: 100,
|
|
Offset: 10 << 20,
|
|
Size: 1 << 20,
|
|
},
|
|
},
|
|
})
|
|
addExample(api.SectorState(sealing.Proving))
|
|
addExample(storiface.ID("76f1988b-ef30-4d7e-b3ec-9a627f4ba5a8"))
|
|
addExample(storiface.FTUnsealed)
|
|
addExample(storiface.PathSealing)
|
|
addExample(map[storiface.ID][]storiface.Decl{
|
|
"76f1988b-ef30-4d7e-b3ec-9a627f4ba5a8": {
|
|
{
|
|
SectorID: abi.SectorID{Miner: 1000, Number: 100},
|
|
SectorFileType: storiface.FTSealed,
|
|
},
|
|
},
|
|
})
|
|
addExample(map[storiface.ID]string{
|
|
"76f1988b-ef30-4d7e-b3ec-9a627f4ba5a8": "/data/path",
|
|
})
|
|
addExample(map[uuid.UUID][]storiface.WorkerJob{
|
|
uuid.MustParse("ef8d99a2-6865-4189-8ffa-9fef0f806eee"): {
|
|
{
|
|
ID: storiface.CallID{
|
|
Sector: abi.SectorID{Miner: 1000, Number: 100},
|
|
ID: uuid.MustParse("76081ba0-61bd-45a5-bc08-af05f1c26e5d"),
|
|
},
|
|
Sector: abi.SectorID{Miner: 1000, Number: 100},
|
|
Task: sealtasks.TTPreCommit2,
|
|
RunWait: 0,
|
|
Start: time.Unix(1605172927, 0).UTC(),
|
|
Hostname: "host",
|
|
},
|
|
},
|
|
})
|
|
addExample(map[uuid.UUID]storiface.WorkerStats{
|
|
uuid.MustParse("ef8d99a2-6865-4189-8ffa-9fef0f806eee"): {
|
|
Info: storiface.WorkerInfo{
|
|
Hostname: "host",
|
|
Resources: storiface.WorkerResources{
|
|
MemPhysical: 256 << 30,
|
|
MemUsed: 2 << 30,
|
|
MemSwap: 120 << 30,
|
|
MemSwapUsed: 2 << 30,
|
|
CPUs: 64,
|
|
GPUs: []string{"aGPU 1337"},
|
|
Resources: storiface.ResourceTable,
|
|
},
|
|
},
|
|
Enabled: true,
|
|
MemUsedMin: 0,
|
|
MemUsedMax: 0,
|
|
GpuUsed: 0,
|
|
CpuUse: 0,
|
|
},
|
|
})
|
|
addExample(storiface.ErrorCode(0))
|
|
addExample(map[abi.SectorNumber]string{
|
|
123: "can't acquire read lock",
|
|
})
|
|
addExample(json.RawMessage(`"json raw message"`))
|
|
addExample(map[api.SectorState]int{
|
|
api.SectorState(sealing.Proving): 120,
|
|
})
|
|
addExample([]abi.SectorNumber{123, 124})
|
|
addExample([]storiface.SectorLock{
|
|
{
|
|
Sector: abi.SectorID{Number: 123, Miner: 1000},
|
|
Write: [storiface.FileTypes]uint{0, 0, 1},
|
|
Read: [storiface.FileTypes]uint{2, 3, 0},
|
|
},
|
|
})
|
|
storifaceid := storiface.ID("1399aa04-2625-44b1-bad4-bd07b59b22c4")
|
|
addExample(&storifaceid)
|
|
|
|
// worker specific
|
|
addExample(storiface.AcquireMove)
|
|
addExample(storiface.UnpaddedByteIndex(abi.PaddedPieceSize(1 << 20).Unpadded()))
|
|
addExample(map[sealtasks.TaskType]struct{}{
|
|
sealtasks.TTPreCommit2: {},
|
|
})
|
|
addExample(sealtasks.TTCommit2)
|
|
addExample(apitypes.OpenRPCDocument{
|
|
"openrpc": "1.2.6",
|
|
"info": map[string]interface{}{
|
|
"title": "Lotus RPC API",
|
|
"version": "1.2.1/generated=2020-11-22T08:22:42-06:00",
|
|
},
|
|
"methods": []interface{}{}},
|
|
)
|
|
|
|
addExample(api.CheckStatusCode(0))
|
|
addExample(map[string]interface{}{"abc": 123})
|
|
addExample(api.MinerSubsystems{
|
|
api.SubsystemMining,
|
|
api.SubsystemSealing,
|
|
api.SubsystemSectorStorage,
|
|
api.SubsystemMarkets,
|
|
})
|
|
addExample(api.DagstoreShardResult{
|
|
Key: "baga6ea4seaqecmtz7iak33dsfshi627abz4i4665dfuzr3qfs4bmad6dx3iigdq",
|
|
Error: "<error>",
|
|
})
|
|
addExample(api.DagstoreShardInfo{
|
|
Key: "baga6ea4seaqecmtz7iak33dsfshi627abz4i4665dfuzr3qfs4bmad6dx3iigdq",
|
|
State: "ShardStateAvailable",
|
|
Error: "<error>",
|
|
})
|
|
addExample(storiface.ResourceTable)
|
|
addExample(network.ScopeStat{
|
|
Memory: 123,
|
|
NumStreamsInbound: 1,
|
|
NumStreamsOutbound: 2,
|
|
NumConnsInbound: 3,
|
|
NumConnsOutbound: 4,
|
|
NumFD: 5,
|
|
})
|
|
addExample(map[string]network.ScopeStat{
|
|
"abc": {
|
|
Memory: 123,
|
|
NumStreamsInbound: 1,
|
|
NumStreamsOutbound: 2,
|
|
NumConnsInbound: 3,
|
|
NumConnsOutbound: 4,
|
|
NumFD: 5,
|
|
}})
|
|
addExample(api.NetLimit{
|
|
Memory: 123,
|
|
StreamsInbound: 1,
|
|
StreamsOutbound: 2,
|
|
Streams: 3,
|
|
ConnsInbound: 3,
|
|
ConnsOutbound: 4,
|
|
Conns: 4,
|
|
FD: 5,
|
|
})
|
|
addExample(map[string]bitfield.BitField{
|
|
"": bitfield.NewFromSet([]uint64{5, 6, 7, 10}),
|
|
})
|
|
|
|
addExample(http.Header{
|
|
"Authorization": []string{"Bearer ey.."},
|
|
})
|
|
|
|
addExample(map[storiface.SectorFileType]storiface.SectorLocation{
|
|
storiface.FTSealed: {
|
|
Local: false,
|
|
URL: "https://example.com/sealingservice/sectors/s-f0123-12345",
|
|
Headers: nil,
|
|
},
|
|
})
|
|
addExample(&uuid.UUID{})
|
|
}
|
|
|
|
func GetAPIType(name, pkg string) (i interface{}, t reflect.Type, permStruct []reflect.Type) {
|
|
|
|
switch pkg {
|
|
case "api": // latest
|
|
switch name {
|
|
case "FullNode":
|
|
i = &api.FullNodeStruct{}
|
|
t = reflect.TypeOf(new(struct{ api.FullNode })).Elem()
|
|
permStruct = append(permStruct, reflect.TypeOf(api.FullNodeStruct{}.Internal))
|
|
permStruct = append(permStruct, reflect.TypeOf(api.CommonStruct{}.Internal))
|
|
permStruct = append(permStruct, reflect.TypeOf(api.NetStruct{}.Internal))
|
|
case "StorageMiner":
|
|
i = &api.StorageMinerStruct{}
|
|
t = reflect.TypeOf(new(struct{ api.StorageMiner })).Elem()
|
|
permStruct = append(permStruct, reflect.TypeOf(api.StorageMinerStruct{}.Internal))
|
|
permStruct = append(permStruct, reflect.TypeOf(api.CommonStruct{}.Internal))
|
|
permStruct = append(permStruct, reflect.TypeOf(api.NetStruct{}.Internal))
|
|
case "Worker":
|
|
i = &api.WorkerStruct{}
|
|
t = reflect.TypeOf(new(struct{ api.Worker })).Elem()
|
|
permStruct = append(permStruct, reflect.TypeOf(api.WorkerStruct{}.Internal))
|
|
case "Gateway":
|
|
i = &api.GatewayStruct{}
|
|
t = reflect.TypeOf(new(struct{ api.Gateway })).Elem()
|
|
permStruct = append(permStruct, reflect.TypeOf(api.GatewayStruct{}.Internal))
|
|
default:
|
|
panic("unknown type")
|
|
}
|
|
case "v0api":
|
|
switch name {
|
|
case "FullNode":
|
|
i = v0api.FullNodeStruct{}
|
|
t = reflect.TypeOf(new(struct{ v0api.FullNode })).Elem()
|
|
permStruct = append(permStruct, reflect.TypeOf(v0api.FullNodeStruct{}.Internal))
|
|
permStruct = append(permStruct, reflect.TypeOf(v0api.CommonStruct{}.Internal))
|
|
permStruct = append(permStruct, reflect.TypeOf(v0api.NetStruct{}.Internal))
|
|
default:
|
|
panic("unknown type")
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func ExampleValue(method string, t, parent reflect.Type) interface{} {
|
|
v, ok := ExampleValues[t]
|
|
if ok {
|
|
return v
|
|
}
|
|
|
|
switch t.Kind() {
|
|
case reflect.Slice:
|
|
out := reflect.New(t).Elem()
|
|
out = reflect.Append(out, reflect.ValueOf(ExampleValue(method, t.Elem(), t)))
|
|
return out.Interface()
|
|
case reflect.Chan:
|
|
return ExampleValue(method, t.Elem(), nil)
|
|
case reflect.Struct:
|
|
es := exampleStruct(method, t, parent)
|
|
v := reflect.ValueOf(es).Elem().Interface()
|
|
ExampleValues[t] = v
|
|
return v
|
|
case reflect.Array:
|
|
out := reflect.New(t).Elem()
|
|
for i := 0; i < t.Len(); i++ {
|
|
out.Index(i).Set(reflect.ValueOf(ExampleValue(method, t.Elem(), t)))
|
|
}
|
|
return out.Interface()
|
|
|
|
case reflect.Ptr:
|
|
if t.Elem().Kind() == reflect.Struct {
|
|
es := exampleStruct(method, t.Elem(), t)
|
|
//ExampleValues[t] = es
|
|
return es
|
|
}
|
|
case reflect.Interface:
|
|
return struct{}{}
|
|
}
|
|
|
|
panic(fmt.Sprintf("No example value for type: %s (method '%s')", t, method))
|
|
}
|
|
|
|
func exampleStruct(method string, t, parent reflect.Type) interface{} {
|
|
ns := reflect.New(t)
|
|
for i := 0; i < t.NumField(); i++ {
|
|
f := t.Field(i)
|
|
if f.Type == parent {
|
|
continue
|
|
}
|
|
if strings.Title(f.Name) == f.Name {
|
|
ns.Elem().Field(i).Set(reflect.ValueOf(ExampleValue(method, f.Type, t)))
|
|
}
|
|
}
|
|
|
|
return ns.Interface()
|
|
}
|
|
|
|
type Visitor struct {
|
|
Root string
|
|
Methods map[string]ast.Node
|
|
}
|
|
|
|
func (v *Visitor) Visit(node ast.Node) ast.Visitor {
|
|
st, ok := node.(*ast.TypeSpec)
|
|
if !ok {
|
|
return v
|
|
}
|
|
|
|
if st.Name.Name != v.Root {
|
|
return nil
|
|
}
|
|
|
|
iface := st.Type.(*ast.InterfaceType)
|
|
for _, m := range iface.Methods.List {
|
|
if len(m.Names) > 0 {
|
|
v.Methods[m.Names[0].Name] = m
|
|
}
|
|
}
|
|
|
|
return v
|
|
}
|
|
|
|
const NoComment = "There are not yet any comments for this method."
|
|
|
|
func ParseApiASTInfo(apiFile, iface, pkg, dir string) (comments map[string]string, groupDocs map[string]string) { //nolint:golint
|
|
fset := token.NewFileSet()
|
|
apiDir, err := filepath.Abs(dir)
|
|
if err != nil {
|
|
fmt.Println("./api filepath absolute error: ", err)
|
|
return
|
|
}
|
|
apiFile, err = filepath.Abs(apiFile)
|
|
if err != nil {
|
|
fmt.Println("filepath absolute error: ", err, "file:", apiFile)
|
|
return
|
|
}
|
|
pkgs, err := parser.ParseDir(fset, apiDir, nil, parser.AllErrors|parser.ParseComments)
|
|
if err != nil {
|
|
fmt.Println("parse error: ", err)
|
|
return
|
|
}
|
|
|
|
ap := pkgs[pkg]
|
|
|
|
f := ap.Files[apiFile]
|
|
|
|
cmap := ast.NewCommentMap(fset, f, f.Comments)
|
|
|
|
v := &Visitor{iface, make(map[string]ast.Node)}
|
|
ast.Walk(v, ap)
|
|
|
|
comments = make(map[string]string)
|
|
groupDocs = make(map[string]string)
|
|
for mn, node := range v.Methods {
|
|
filteredComments := cmap.Filter(node).Comments()
|
|
if len(filteredComments) == 0 {
|
|
comments[mn] = NoComment
|
|
} else {
|
|
for _, c := range filteredComments {
|
|
if strings.HasPrefix(c.Text(), "MethodGroup:") {
|
|
parts := strings.Split(c.Text(), "\n")
|
|
groupName := strings.TrimSpace(parts[0][12:])
|
|
comment := strings.Join(parts[1:], "\n")
|
|
groupDocs[groupName] = comment
|
|
|
|
break
|
|
}
|
|
}
|
|
|
|
l := len(filteredComments) - 1
|
|
if len(filteredComments) > 1 {
|
|
l = len(filteredComments) - 2
|
|
}
|
|
last := filteredComments[l].Text()
|
|
if !strings.HasPrefix(last, "MethodGroup:") {
|
|
comments[mn] = last
|
|
} else {
|
|
comments[mn] = NoComment
|
|
}
|
|
}
|
|
}
|
|
return comments, groupDocs
|
|
}
|
|
|
|
type MethodGroup struct {
|
|
GroupName string
|
|
Header string
|
|
Methods []*Method
|
|
}
|
|
|
|
type Method struct {
|
|
Comment string
|
|
Name string
|
|
InputExample string
|
|
ResponseExample string
|
|
}
|
|
|
|
func MethodGroupFromName(mn string) string {
|
|
i := strings.IndexFunc(mn[1:], func(r rune) bool {
|
|
return unicode.IsUpper(r)
|
|
})
|
|
if i < 0 {
|
|
return ""
|
|
}
|
|
return mn[:i+1]
|
|
}
|