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Merge pull request #2349 from nspcc-dev/codegen-contract

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cli/smartcontract: generate bindings to an existing contract
This commit is contained in:
Roman Khimov 2022-02-24 15:51:33 +03:00 committed by GitHub
commit b65ab011fe
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 842 additions and 0 deletions
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80
cli/smartcontract/generate.go Normal file
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@ -0,0 +1,80 @@
package smartcontract
import (
"fmt"
"io/ioutil"
"os"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/binding"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/urfave/cli"
"gopkg.in/yaml.v2"
)
var generateWrapperCmd = cli.Command{
Name: "generate-wrapper",
Usage: "generate wrapper to use in other contracts",
UsageText: "neo-go contract generate-wrapper --manifest manifest.json --out file.go",
Description: ``,
Action: contractGenerateWrapper,
Flags: []cli.Flag{
cli.StringFlag{
Name: "config, c",
Usage: "Configuration file to use",
},
cli.StringFlag{
Name: "manifest, m",
Usage: "Read contract manifest (*.manifest.json) file",
},
cli.StringFlag{
Name: "out, o",
Usage: "Output of the compiled contract",
},
cli.StringFlag{
Name: "hash",
Usage: "Smart-contract hash",
},
},
}
// contractGenerateWrapper deploys contract.
func contractGenerateWrapper(ctx *cli.Context) error {
m, _, err := readManifest(ctx.String("manifest"))
if err != nil {
return cli.NewExitError(fmt.Errorf("can't read contract manifest: %w", err), 1)
}
cfg := binding.NewConfig()
if cfgPath := ctx.String("config"); cfgPath != "" {
bs, err := ioutil.ReadFile(cfgPath)
if err != nil {
return cli.NewExitError(fmt.Errorf("can't read config file: %w", err), 1)
}
err = yaml.Unmarshal(bs, &cfg)
if err != nil {
return cli.NewExitError(fmt.Errorf("can't parse config file: %w", err), 1)
}
}
cfg.Manifest = m
h, err := util.Uint160DecodeStringLE(ctx.String("hash"))
if err != nil {
return cli.NewExitError(fmt.Errorf("invalid contract hash: %w", err), 1)
}
cfg.Hash = h
f, err := os.Create(ctx.String("out"))
if err != nil {
return cli.NewExitError(fmt.Errorf("can't create output file: %w", err), 1)
}
defer f.Close()
cfg.Output = f
err = binding.Generate(cfg)
if err != nil {
return cli.NewExitError(fmt.Errorf("error during generation: %w", err), 1)
}
return nil
}

330
cli/smartcontract/generate_test.go Normal file
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@ -0,0 +1,330 @@
package smartcontract
import (
"encoding/json"
"io/ioutil"
"os"
"path/filepath"
"strings"
"testing"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/stretchr/testify/require"
"github.com/urfave/cli"
)
func TestGenerate(t *testing.T) {
m := manifest.NewManifest("MyContract")
m.ABI.Methods = append(m.ABI.Methods,
manifest.Method{
Name: manifest.MethodDeploy,
ReturnType: smartcontract.VoidType,
},
manifest.Method{
Name: "sum",
Parameters: []manifest.Parameter{
manifest.NewParameter("first", smartcontract.IntegerType),
manifest.NewParameter("second", smartcontract.IntegerType),
},
ReturnType: smartcontract.IntegerType,
},
manifest.Method{
Name: "sum", // overloaded method
Parameters: []manifest.Parameter{
manifest.NewParameter("first", smartcontract.IntegerType),
manifest.NewParameter("second", smartcontract.IntegerType),
manifest.NewParameter("third", smartcontract.IntegerType),
},
ReturnType: smartcontract.IntegerType,
},
manifest.Method{
Name: "sum3",
Parameters: []manifest.Parameter{},
ReturnType: smartcontract.IntegerType,
Safe: true,
},
manifest.Method{
Name: "justExecute",
Parameters: []manifest.Parameter{
manifest.NewParameter("arr", smartcontract.ArrayType),
},
ReturnType: smartcontract.VoidType,
},
manifest.Method{
Name: "getPublicKey",
Parameters: nil,
ReturnType: smartcontract.PublicKeyType,
},
manifest.Method{
Name: "otherTypes",
Parameters: []manifest.Parameter{
manifest.NewParameter("ctr", smartcontract.Hash160Type),
manifest.NewParameter("tx", smartcontract.Hash256Type),
manifest.NewParameter("sig", smartcontract.SignatureType),
manifest.NewParameter("data", smartcontract.AnyType),
},
ReturnType: smartcontract.BoolType,
},
manifest.Method{
Name: "emptyName",
Parameters: []manifest.Parameter{
manifest.NewParameter("", smartcontract.MapType),
},
ReturnType: smartcontract.AnyType,
},
manifest.Method{
Name: "searchStorage",
Parameters: []manifest.Parameter{
manifest.NewParameter("ctx", smartcontract.InteropInterfaceType),
},
ReturnType: smartcontract.InteropInterfaceType,
},
manifest.Method{
Name: "getFromMap",
Parameters: []manifest.Parameter{
manifest.NewParameter("intMap", smartcontract.MapType),
manifest.NewParameter("indices", smartcontract.ArrayType),
},
ReturnType: smartcontract.ArrayType,
},
manifest.Method{
Name: "doSomething",
Parameters: []manifest.Parameter{
manifest.NewParameter("bytes", smartcontract.ByteArrayType),
manifest.NewParameter("str", smartcontract.StringType),
},
ReturnType: smartcontract.InteropInterfaceType,
},
manifest.Method{
Name: "getBlockWrapper",
Parameters: []manifest.Parameter{},
ReturnType: smartcontract.InteropInterfaceType,
},
manifest.Method{
Name: "myFunc",
Parameters: []manifest.Parameter{
manifest.NewParameter("in", smartcontract.MapType),
},
ReturnType: smartcontract.ArrayType,
})
manifestFile := filepath.Join(t.TempDir(), "manifest.json")
outFile := filepath.Join(t.TempDir(), "out.go")
rawManifest, err := json.Marshal(m)
require.NoError(t, err)
require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
h := util.Uint160{
0x04, 0x08, 0x15, 0x16, 0x23, 0x42, 0x43, 0x44, 0x00, 0x01,
0xCA, 0xFE, 0xBA, 0xBE, 0xDE, 0xAD, 0xBE, 0xEF, 0x03, 0x04,
}
app := cli.NewApp()
app.Commands = []cli.Command{generateWrapperCmd}
rawCfg := `package: wrapper
hash: ` + h.StringLE() + `
overrides:
searchStorage.ctx: storage.Context
searchStorage: iterator.Iterator
getFromMap.intMap: "map[string]int"
getFromMap.indices: "[]string"
getFromMap: "[]int"
getBlockWrapper: ledger.Block
myFunc.in: "map[int]github.com/heyitsme/mycontract.Input"
myFunc: "[]github.com/heyitsme/mycontract.Output"
callflags:
doSomething: ReadStates
`
cfgPath := filepath.Join(t.TempDir(), "binding.yml")
require.NoError(t, ioutil.WriteFile(cfgPath, []byte(rawCfg), os.ModePerm))
require.NoError(t, app.Run([]string{"", "generate-wrapper",
"--manifest", manifestFile,
"--config", cfgPath,
"--out", outFile,
"--hash", h.StringLE(),
}))
const expected = `// Package wrapper contains wrappers for MyContract contract.
package wrapper
import (
"github.com/heyitsme/mycontract"
"github.com/nspcc-dev/neo-go/pkg/interop"
"github.com/nspcc-dev/neo-go/pkg/interop/contract"
"github.com/nspcc-dev/neo-go/pkg/interop/iterator"
"github.com/nspcc-dev/neo-go/pkg/interop/native/ledger"
"github.com/nspcc-dev/neo-go/pkg/interop/neogointernal"
"github.com/nspcc-dev/neo-go/pkg/interop/storage"
)
// Hash contains contract hash in big-endian form.
const Hash = "\x04\x08\x15\x16\x23\x42\x43\x44\x00\x01\xca\xfe\xba\xbe\xde\xad\xbe\xef\x03\x04"
// Sum invokes ` + "`sum`" + ` method of contract.
func Sum(first int, second int) int {
return neogointernal.CallWithToken(Hash, "sum", int(contract.All), first, second).(int)
}
// Sum_3 invokes ` + "`sum`" + ` method of contract.
func Sum_3(first int, second int, third int) int {
return neogointernal.CallWithToken(Hash, "sum", int(contract.All), first, second, third).(int)
}
// Sum3 invokes ` + "`sum3`" + ` method of contract.
func Sum3() int {
return neogointernal.CallWithToken(Hash, "sum3", int(contract.ReadOnly)).(int)
}
// JustExecute invokes ` + "`justExecute`" + ` method of contract.
func JustExecute(arr []interface{}) {
neogointernal.CallWithTokenNoRet(Hash, "justExecute", int(contract.All), arr)
}
// GetPublicKey invokes ` + "`getPublicKey`" + ` method of contract.
func GetPublicKey() interop.PublicKey {
return neogointernal.CallWithToken(Hash, "getPublicKey", int(contract.All)).(interop.PublicKey)
}
// OtherTypes invokes ` + "`otherTypes`" + ` method of contract.
func OtherTypes(ctr interop.Hash160, tx interop.Hash256, sig interop.Signature, data interface{}) bool {
return neogointernal.CallWithToken(Hash, "otherTypes", int(contract.All), ctr, tx, sig, data).(bool)
}
// EmptyName invokes ` + "`emptyName`" + ` method of contract.
func EmptyName(arg0 map[string]interface{}) interface{} {
return neogointernal.CallWithToken(Hash, "emptyName", int(contract.All), arg0).(interface{})
}
// SearchStorage invokes ` + "`searchStorage`" + ` method of contract.
func SearchStorage(ctx storage.Context) iterator.Iterator {
return neogointernal.CallWithToken(Hash, "searchStorage", int(contract.All), ctx).(iterator.Iterator)
}
// GetFromMap invokes ` + "`getFromMap`" + ` method of contract.
func GetFromMap(intMap map[string]int, indices []string) []int {
return neogointernal.CallWithToken(Hash, "getFromMap", int(contract.All), intMap, indices).([]int)
}
// DoSomething invokes ` + "`doSomething`" + ` method of contract.
func DoSomething(bytes []byte, str string) interface{} {
return neogointernal.CallWithToken(Hash, "doSomething", int(contract.ReadStates), bytes, str).(interface{})
}
// GetBlockWrapper invokes ` + "`getBlockWrapper`" + ` method of contract.
func GetBlockWrapper() ledger.Block {
return neogointernal.CallWithToken(Hash, "getBlockWrapper", int(contract.All)).(ledger.Block)
}
// MyFunc invokes ` + "`myFunc`" + ` method of contract.
func MyFunc(in map[int]mycontract.Input) []mycontract.Output {
return neogointernal.CallWithToken(Hash, "myFunc", int(contract.All), in).([]mycontract.Output)
}
`
data, err := ioutil.ReadFile(outFile)
require.NoError(t, err)
require.Equal(t, expected, string(data))
}
func TestGenerateValidPackageName(t *testing.T) {
m := manifest.NewManifest("My space\tcontract")
m.ABI.Methods = append(m.ABI.Methods,
manifest.Method{
Name: "get",
Parameters: []manifest.Parameter{},
ReturnType: smartcontract.IntegerType,
},
)
manifestFile := filepath.Join(t.TempDir(), "manifest.json")
outFile := filepath.Join(t.TempDir(), "out.go")
rawManifest, err := json.Marshal(m)
require.NoError(t, err)
require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
h := util.Uint160{
0x04, 0x08, 0x15, 0x16, 0x23, 0x42, 0x43, 0x44, 0x00, 0x01,
0xCA, 0xFE, 0xBA, 0xBE, 0xDE, 0xAD, 0xBE, 0xEF, 0x03, 0x04,
}
app := cli.NewApp()
app.Commands = []cli.Command{generateWrapperCmd}
require.NoError(t, app.Run([]string{"", "generate-wrapper",
"--manifest", manifestFile,
"--out", outFile,
"--hash", h.StringLE(),
}))
data, err := ioutil.ReadFile(outFile)
require.NoError(t, err)
require.Equal(t, `// Package myspacecontract contains wrappers for My space contract contract.
package myspacecontract
import (
"github.com/nspcc-dev/neo-go/pkg/interop/contract"
"github.com/nspcc-dev/neo-go/pkg/interop/neogointernal"
)
// Hash contains contract hash in big-endian form.
const Hash = "\x04\x08\x15\x16\x23\x42\x43\x44\x00\x01\xca\xfe\xba\xbe\xde\xad\xbe\xef\x03\x04"
// Get invokes `+"`get`"+` method of contract.
func Get() int {
return neogointernal.CallWithToken(Hash, "get", int(contract.All)).(int)
}
`, string(data))
}
func TestGenerate_Errors(t *testing.T) {
app := cli.NewApp()
app.Commands = []cli.Command{generateWrapperCmd}
app.ExitErrHandler = func(*cli.Context, error) {}
checkError := func(t *testing.T, msg string, args ...string) {
// cli.ExitError doesn't implement wraping properly, so we check for an error message.
err := app.Run(append([]string{"", "generate-wrapper"}, args...))
require.True(t, strings.Contains(err.Error(), msg), "got: %v", err)
}
t.Run("missing manifest argument", func(t *testing.T) {
checkError(t, errNoManifestFile.Error())
})
t.Run("missing manifest file", func(t *testing.T) {
checkError(t, "can't read contract manifest", "--manifest", "notexists")
})
t.Run("invalid manifest", func(t *testing.T) {
manifestFile := filepath.Join(t.TempDir(), "invalid.json")
require.NoError(t, ioutil.WriteFile(manifestFile, []byte("[]"), os.ModePerm))
checkError(t, "", "--manifest", manifestFile)
})
manifestFile := filepath.Join(t.TempDir(), "manifest.json")
m := manifest.NewManifest("MyContract")
rawManifest, err := json.Marshal(m)
require.NoError(t, err)
require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
t.Run("invalid hash", func(t *testing.T) {
checkError(t, "invalid contract hash", "--manifest", manifestFile, "--hash", "xxx")
})
t.Run("missing config", func(t *testing.T) {
checkError(t, "can't read config file",
"--manifest", manifestFile, "--hash", util.Uint160{}.StringLE(),
"--config", filepath.Join(t.TempDir(), "not.exists.yml"))
})
t.Run("invalid config", func(t *testing.T) {
rawCfg := `package: wrapper
callflags:
someFunc: ReadSometimes
`
cfgPath := filepath.Join(t.TempDir(), "binding.yml")
require.NoError(t, ioutil.WriteFile(cfgPath, []byte(rawCfg), os.ModePerm))
checkError(t, "can't parse config file",
"--manifest", manifestFile, "--hash", util.Uint160{}.StringLE(),
"--config", cfgPath)
})
}

1
cli/smartcontract/smart_contract.go
View file

@ -179,6 +179,7 @@ func NewCommands() []cli.Command {
Action: contractDeploy,
Flags: deployFlags,
},
generateWrapperCmd,
{
Name: "invokefunction",
Usage: "invoke deployed contract on the blockchain",

254
pkg/smartcontract/binding/generate.go Normal file
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@ -0,0 +1,254 @@
package binding
import (
"bytes"
"fmt"
"io"
"sort"
"strconv"
"strings"
"text/template"
"unicode"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
"github.com/nspcc-dev/neo-go/pkg/util"
)
const srcTmpl = `
{{- define "METHOD" -}}
// {{.Name}} {{.Comment}}
func {{.Name}}({{range $index, $arg := .Arguments -}}
{{- if ne $index 0}}, {{end}}
{{- .Name}} {{.Type}}
{{- end}}) {{if .ReturnType }}{{ .ReturnType }} {
return neogointernal.CallWithToken(Hash, "{{ .NameABI }}", int(contract.{{ .CallFlag }})
{{- range $arg := .Arguments -}}, {{.Name}}{{end}}).({{ .ReturnType }})
{{- else -}} {
neogointernal.CallWithTokenNoRet(Hash, "{{ .NameABI }}", int(contract.{{ .CallFlag }})
{{- range $arg := .Arguments -}}, {{.Name}}{{end}})
{{- end}}
}
{{- end -}}
// Package {{.PackageName}} contains wrappers for {{.ContractName}} contract.
package {{.PackageName}}
import (
{{range $m := .Imports}} "{{ $m }}"
{{end}})
// Hash contains contract hash in big-endian form.
const Hash = "{{ .Hash }}"
{{range $m := .Methods}}
{{template "METHOD" $m }}
{{end}}`
type (
// Config contains parameter for the generated binding.
Config struct {
Package string `yaml:"package,omitempty"`
Manifest *manifest.Manifest `yaml:"-"`
Hash util.Uint160 `yaml:"hash,omitempty"`
Overrides map[string]Override `yaml:"overrides,omitempty"`
CallFlags map[string]callflag.CallFlag `yaml:"callflags,omitempty"`
Output io.Writer `yaml:"-"`
}
contractTmpl struct {
PackageName string
ContractName string
Imports []string
Hash string
Methods []methodTmpl
}
methodTmpl struct {
Name string
NameABI string
CallFlag string
Comment string
Arguments []paramTmpl
ReturnType string
}
paramTmpl struct {
Name string
Type string
}
)
// NewConfig initializes and returns new config instance.
func NewConfig() Config {
return Config{
Overrides: make(map[string]Override),
CallFlags: make(map[string]callflag.CallFlag),
}
}
// Generate writes Go file containing smartcontract bindings to the `cfg.Output`.
func Generate(cfg Config) error {
ctr, err := templateFromManifest(cfg)
if err != nil {
return err
}
tmp, err := template.New("generate").Funcs(template.FuncMap{
"lowerFirst": lowerFirst,
"scTypeToGo": scTypeToGo,
}).Parse(srcTmpl)
if err != nil {
return err
}
return tmp.Execute(cfg.Output, ctr)
}
func scTypeToGo(typ smartcontract.ParamType) string {
switch typ {
case smartcontract.AnyType:
return "interface{}"
case smartcontract.BoolType:
return "bool"
case smartcontract.IntegerType:
return "int"
case smartcontract.ByteArrayType:
return "[]byte"
case smartcontract.StringType:
return "string"
case smartcontract.Hash160Type:
return "interop.Hash160"
case smartcontract.Hash256Type:
return "interop.Hash256"
case smartcontract.PublicKeyType:
return "interop.PublicKey"
case smartcontract.SignatureType:
return "interop.Signature"
case smartcontract.ArrayType:
return "[]interface{}"
case smartcontract.MapType:
return "map[string]interface{}"
case smartcontract.InteropInterfaceType:
return "interface{}"
case smartcontract.VoidType:
return ""
default:
panic("unreachable")
}
}
func templateFromManifest(cfg Config) (contractTmpl, error) {
hStr := ""
for _, b := range cfg.Hash.BytesBE() {
hStr += fmt.Sprintf("\\x%02x", b)
}
ctr := contractTmpl{
PackageName: cfg.Package,
ContractName: cfg.Manifest.Name,
Hash: hStr,
}
if ctr.PackageName == "" {
buf := bytes.NewBuffer(make([]byte, 0, len(cfg.Manifest.Name)))
for _, r := range cfg.Manifest.Name {
if unicode.IsLetter(r) {
buf.WriteRune(unicode.ToLower(r))
}
}
ctr.PackageName = buf.String()
}
imports := make(map[string]struct{})
seen := make(map[string]bool)
for _, m := range cfg.Manifest.ABI.Methods {
seen[m.Name] = false
}
for _, m := range cfg.Manifest.ABI.Methods {
if m.Name[0] == '_' {
continue
}
imports["github.com/nspcc-dev/neo-go/pkg/interop/contract"] = struct{}{}
imports["github.com/nspcc-dev/neo-go/pkg/interop/neogointernal"] = struct{}{}
// Consider `perform(a)` and `perform(a, b)` methods.
// First, try to export the second method with `Perform2` name.
// If `perform2` is already in the manifest, use `perform_2` with as many underscores
// as needed to eliminate name conflicts. It will produce long names in certain circumstances,
// but if the manifest contains lots of similar names with trailing underscores, delicate naming
// was probably not the goal.
name := m.Name
if v, ok := seen[name]; !ok || v {
suffix := strconv.Itoa(len(m.Parameters))
for ; seen[name]; name = m.Name + suffix {
suffix = "_" + suffix
}
}
seen[name] = true
mtd := methodTmpl{
Name: upperFirst(name),
NameABI: m.Name,
CallFlag: callflag.All.String(),
Comment: fmt.Sprintf("invokes `%s` method of contract.", m.Name),
}
if f, ok := cfg.CallFlags[m.Name]; ok {
mtd.CallFlag = f.String()
} else if m.Safe {
mtd.CallFlag = callflag.ReadOnly.String()
}
for i := range m.Parameters {
name := m.Parameters[i].Name
if name == "" {
name = fmt.Sprintf("arg%d", i)
}
var typeStr string
if over, ok := cfg.Overrides[m.Name+"."+name]; ok {
typeStr = over.TypeName
if over.Package != "" {
imports[over.Package] = struct{}{}
}
} else {
typeStr = scTypeToGo(m.Parameters[i].Type)
}
mtd.Arguments = append(mtd.Arguments, paramTmpl{
Name: name,
Type: typeStr,
})
}
if over, ok := cfg.Overrides[m.Name]; ok {
mtd.ReturnType = over.TypeName
if over.Package != "" {
imports[over.Package] = struct{}{}
}
} else {
mtd.ReturnType = scTypeToGo(m.ReturnType)
switch m.ReturnType {
case smartcontract.Hash160Type, smartcontract.Hash256Type, smartcontract.InteropInterfaceType,
smartcontract.SignatureType, smartcontract.PublicKeyType:
imports["github.com/nspcc-dev/neo-go/pkg/interop"] = struct{}{}
}
}
ctr.Methods = append(ctr.Methods, mtd)
}
for imp := range imports {
ctr.Imports = append(ctr.Imports, imp)
}
sort.Strings(ctr.Imports)
return ctr, nil
}
func upperFirst(s string) string {
return strings.ToUpper(s[0:1]) + s[1:]
}
func lowerFirst(s string) string {
return strings.ToLower(s[0:1]) + s[1:]
}

75
pkg/smartcontract/binding/override.go Normal file
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@ -0,0 +1,75 @@
package binding
import (
"strings"
)
// Override contains package and type to replace manifest method parameter type with.
type Override struct {
// Package contains fully-qualified package name.
Package string
// TypeName contains type name together with a package alias.
TypeName string
}
// NewOverrideFromString parses s and returns method parameter type override spec.
func NewOverrideFromString(s string) Override {
var over Override
index := strings.LastIndexByte(s, '.')
if index == -1 {
over.TypeName = s
return over
}
// Arrays and maps can have fully-qualified types as elements.
last := strings.LastIndexAny(s, "]*")
isCompound := last != -1 && last < index
if isCompound {
over.Package = s[last+1 : index]
} else {
over.Package = s[:index]
}
switch over.Package {
case "iterator", "storage":
over.Package = "github.com/nspcc-dev/neo-go/pkg/interop/" + over.Package
case "ledger", "management":
over.Package = "github.com/nspcc-dev/neo-go/pkg/interop/native/" + over.Package
}
slashIndex := strings.LastIndexByte(s, '/')
if isCompound {
over.TypeName = s[:last+1] + s[slashIndex+1:]
} else {
over.TypeName = s[slashIndex+1:]
}
return over
}
// UnmarshalYAML implements the YAML Unmarshaler interface.
func (o *Override) UnmarshalYAML(unmarshal func(interface{}) error) error {
var s string
err := unmarshal(&s)
if err != nil {
return err
}
*o = NewOverrideFromString(s)
return err
}
// MarshalYAML implements the YAML marshaler interface.
func (o Override) MarshalYAML() (interface{}, error) {
if o.Package == "" {
return o.TypeName, nil
}
index := strings.LastIndexByte(o.TypeName, '.')
last := strings.LastIndexAny(o.TypeName, "]*")
if last == -1 {
return o.Package + o.TypeName[index:], nil
}
return o.TypeName[:last+1] + o.Package + o.TypeName[index:], nil
}

32
pkg/smartcontract/binding/override_test.go Normal file
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@ -0,0 +1,32 @@
package binding
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestNewOverrideFromString(t *testing.T) {
testCases := []struct {
expected Override
value string
}{
{Override{"import.com/pkg", "pkg.Type"}, "import.com/pkg.Type"},
{Override{"", "map[int]int"}, "map[int]int"},
{Override{"", "[]int"}, "[]int"},
{Override{"", "map[int][]int"}, "map[int][]int"},
{Override{"import.com/pkg", "map[int]pkg.Type"}, "map[int]import.com/pkg.Type"},
{Override{"import.com/pkg", "[]pkg.Type"}, "[]import.com/pkg.Type"},
{Override{"import.com/pkg", "map[int]*pkg.Type"}, "map[int]*import.com/pkg.Type"},
{Override{"import.com/pkg", "[]*pkg.Type"}, "[]*import.com/pkg.Type"},
{Override{"import.com/pkg", "[][]*pkg.Type"}, "[][]*import.com/pkg.Type"},
{Override{"import.com/pkg", "map[string][]pkg.Type"}, "map[string][]import.com/pkg.Type"}}
for _, tc := range testCases {
require.Equal(t, tc.expected, NewOverrideFromString(tc.value))
s, err := tc.expected.MarshalYAML()
require.NoError(t, err)
require.Equal(t, tc.value, s)
}
}

18
pkg/smartcontract/callflag/call_flags.go
View file

@ -117,3 +117,21 @@ func (f *CallFlag) UnmarshalJSON(data []byte) error {
*f = flag
return nil
}
// MarshalYAML implements the YAML marshaler interface.
func (f CallFlag) MarshalYAML() (interface{}, error) {
return f.String(), nil
}
// UnmarshalYAML implements the YAML unmarshaler interface.
func (f *CallFlag) UnmarshalYAML(unmarshal func(interface{}) error) error {
var s string
err := unmarshal(&s)
if err != nil {
return err
}
*f, err = FromString(s)
return err
}

15
pkg/smartcontract/callflag/call_flags_test.go
View file

@ -5,6 +5,7 @@ import (
"github.com/nspcc-dev/neo-go/internal/testserdes"
"github.com/stretchr/testify/require"
"gopkg.in/yaml.v2"
)
func TestCallFlag_Has(t *testing.T) {
@ -75,3 +76,17 @@ func TestMarshalUnmarshalJSON(t *testing.T) {
require.Error(t, err)
require.Equal(t, forig, f)
}
func TestMarshalUnmarshalYAML(t *testing.T) {
for _, expected := range []CallFlag{States, States | AllowNotify} {
data, err := yaml.Marshal(expected)
require.NoError(t, err)
var f CallFlag
require.NoError(t, yaml.Unmarshal(data, &f))
require.Equal(t, expected, f)
}
var f CallFlag
require.Error(t, yaml.Unmarshal([]byte(`[]`), &f))
}

19
pkg/util/uint160.go
View file

@ -135,6 +135,25 @@ func (u Uint160) MarshalJSON() ([]byte, error) {
return []byte(`"0x` + u.StringLE() + `"`), nil
}
// UnmarshalYAML implements the YAML Unmarshaler interface.
func (u *Uint160) UnmarshalYAML(unmarshal func(interface{}) error) error {
var s string
err := unmarshal(&s)
if err != nil {
return err
}
s = strings.TrimPrefix(s, "0x")
*u, err = Uint160DecodeStringLE(s)
return err
}
// MarshalYAML implements the YAML marshaller interface.
func (u Uint160) MarshalYAML() (interface{}, error) {
return "0x" + u.StringLE(), nil
}
// EncodeBinary implements Serializable interface.
func (u *Uint160) EncodeBinary(bw *io.BinWriter) {
bw.WriteBytes(u[:])

18
pkg/util/uint160_test.go
View file

@ -8,6 +8,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gopkg.in/yaml.v2"
)
func TestUint160UnmarshalJSON(t *testing.T) {
@ -26,6 +27,23 @@ func TestUint160UnmarshalJSON(t *testing.T) {
assert.Error(t, u2.UnmarshalJSON([]byte(`123`)))
}
func TestUint160UnmarshalYAML(t *testing.T) {
str := "0263c1de100292813b5e075e585acc1bae963b2d"
expected, err := util.Uint160DecodeStringLE(str)
assert.NoError(t, err)
var u1, u2 util.Uint160
require.NoError(t, yaml.Unmarshal([]byte(`"`+str+`"`), &u1))
require.Equal(t, expected, u1)
data, err := yaml.Marshal(u1)
require.NoError(t, err)
require.NoError(t, yaml.Unmarshal(data, &u2))
require.Equal(t, expected, u2)
require.Error(t, yaml.Unmarshal([]byte(`[]`), &u1))
}
func TestUInt160DecodeString(t *testing.T) {
hexStr := "2d3b96ae1bcc5a585e075e3b81920210dec16302"
val, err := util.Uint160DecodeStringBE(hexStr)