cli/smartcontract: generate bindings to an existing contract
Signed-off-by: Evgeniy Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgeniy Stratonikov
parent
4aab85ef51
commit
da03d895de
6 changed files with 772 additions and 0 deletions
80
cli/smartcontract/generate.go
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80
cli/smartcontract/generate.go
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@ -0,0 +1,80 @@
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package smartcontract
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import (
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"fmt"
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"io/ioutil"
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"os"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/binding"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/urfave/cli"
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"gopkg.in/yaml.v2"
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)
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var generateWrapperCmd = cli.Command{
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Name: "generate-wrapper",
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Usage: "generate wrapper to use in other contracts",
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UsageText: "neo-go contract generate-wrapper --manifest manifest.json --out file.go",
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Description: ``,
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Action: contractGenerateWrapper,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "config, c",
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Usage: "Configuration file to use",
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},
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cli.StringFlag{
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Name: "manifest, m",
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Usage: "Read contract manifest (*.manifest.json) file",
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},
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cli.StringFlag{
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Name: "out, o",
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Usage: "Output of the compiled contract",
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},
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cli.StringFlag{
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Name: "hash",
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Usage: "Smart-contract hash",
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},
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},
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}
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// contractGenerateWrapper deploys contract.
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func contractGenerateWrapper(ctx *cli.Context) error {
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m, _, err := readManifest(ctx.String("manifest"))
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if err != nil {
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return cli.NewExitError(fmt.Errorf("can't read contract manifest: %w", err), 1)
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}
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cfg := binding.NewConfig()
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if cfgPath := ctx.String("config"); cfgPath != "" {
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bs, err := ioutil.ReadFile(cfgPath)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("can't read config file: %w", err), 1)
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}
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err = yaml.Unmarshal(bs, &cfg)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("can't parse config file: %w", err), 1)
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}
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}
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cfg.Manifest = m
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h, err := util.Uint160DecodeStringLE(ctx.String("hash"))
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if err != nil {
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return cli.NewExitError(fmt.Errorf("invalid contract hash: %w", err), 1)
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}
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cfg.Hash = h
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f, err := os.Create(ctx.String("out"))
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if err != nil {
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return cli.NewExitError(fmt.Errorf("can't create output file: %w", err), 1)
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}
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defer f.Close()
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cfg.Output = f
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err = binding.Generate(cfg)
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if err != nil {
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return cli.NewExitError(fmt.Errorf("error during generation: %w", err), 1)
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}
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return nil
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}
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330
cli/smartcontract/generate_test.go
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330
cli/smartcontract/generate_test.go
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package smartcontract
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import (
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"encoding/json"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/stretchr/testify/require"
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"github.com/urfave/cli"
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)
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func TestGenerate(t *testing.T) {
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m := manifest.NewManifest("MyContract")
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m.ABI.Methods = append(m.ABI.Methods,
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manifest.Method{
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Name: manifest.MethodDeploy,
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ReturnType: smartcontract.VoidType,
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},
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manifest.Method{
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Name: "sum",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("first", smartcontract.IntegerType),
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manifest.NewParameter("second", smartcontract.IntegerType),
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},
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ReturnType: smartcontract.IntegerType,
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},
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manifest.Method{
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Name: "sum", // overloaded method
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Parameters: []manifest.Parameter{
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manifest.NewParameter("first", smartcontract.IntegerType),
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manifest.NewParameter("second", smartcontract.IntegerType),
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manifest.NewParameter("third", smartcontract.IntegerType),
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},
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ReturnType: smartcontract.IntegerType,
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},
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manifest.Method{
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Name: "sum3",
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Parameters: []manifest.Parameter{},
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ReturnType: smartcontract.IntegerType,
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Safe: true,
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},
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manifest.Method{
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Name: "justExecute",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("arr", smartcontract.ArrayType),
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},
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ReturnType: smartcontract.VoidType,
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},
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manifest.Method{
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Name: "getPublicKey",
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Parameters: nil,
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ReturnType: smartcontract.PublicKeyType,
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},
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manifest.Method{
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Name: "otherTypes",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("ctr", smartcontract.Hash160Type),
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manifest.NewParameter("tx", smartcontract.Hash256Type),
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manifest.NewParameter("sig", smartcontract.SignatureType),
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manifest.NewParameter("data", smartcontract.AnyType),
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},
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ReturnType: smartcontract.BoolType,
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},
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manifest.Method{
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Name: "emptyName",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("", smartcontract.MapType),
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},
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ReturnType: smartcontract.AnyType,
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},
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manifest.Method{
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Name: "searchStorage",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("ctx", smartcontract.InteropInterfaceType),
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},
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ReturnType: smartcontract.InteropInterfaceType,
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},
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manifest.Method{
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Name: "getFromMap",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("intMap", smartcontract.MapType),
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manifest.NewParameter("indices", smartcontract.ArrayType),
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},
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ReturnType: smartcontract.ArrayType,
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},
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manifest.Method{
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Name: "doSomething",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("bytes", smartcontract.ByteArrayType),
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manifest.NewParameter("str", smartcontract.StringType),
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},
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ReturnType: smartcontract.InteropInterfaceType,
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},
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manifest.Method{
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Name: "getBlockWrapper",
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Parameters: []manifest.Parameter{},
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ReturnType: smartcontract.InteropInterfaceType,
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},
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manifest.Method{
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Name: "myFunc",
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Parameters: []manifest.Parameter{
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manifest.NewParameter("in", smartcontract.MapType),
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},
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ReturnType: smartcontract.ArrayType,
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})
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manifestFile := filepath.Join(t.TempDir(), "manifest.json")
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outFile := filepath.Join(t.TempDir(), "out.go")
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rawManifest, err := json.Marshal(m)
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require.NoError(t, err)
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require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
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h := util.Uint160{
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0x04, 0x08, 0x15, 0x16, 0x23, 0x42, 0x43, 0x44, 0x00, 0x01,
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0xCA, 0xFE, 0xBA, 0xBE, 0xDE, 0xAD, 0xBE, 0xEF, 0x03, 0x04,
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}
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app := cli.NewApp()
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app.Commands = []cli.Command{generateWrapperCmd}
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rawCfg := `package: wrapper
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hash: ` + h.StringLE() + `
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overrides:
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searchStorage.ctx: storage.Context
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searchStorage: iterator.Iterator
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getFromMap.intMap: "map[string]int"
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getFromMap.indices: "[]string"
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getFromMap: "[]int"
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getBlockWrapper: ledger.Block
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myFunc.in: "map[int]github.com/heyitsme/mycontract.Input"
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myFunc: "[]github.com/heyitsme/mycontract.Output"
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callflags:
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doSomething: ReadStates
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`
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cfgPath := filepath.Join(t.TempDir(), "binding.yml")
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require.NoError(t, ioutil.WriteFile(cfgPath, []byte(rawCfg), os.ModePerm))
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require.NoError(t, app.Run([]string{"", "generate-wrapper",
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"--manifest", manifestFile,
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"--config", cfgPath,
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"--out", outFile,
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"--hash", h.StringLE(),
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}))
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const expected = `// Package wrapper contains wrappers for MyContract contract.
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package wrapper
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import (
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"github.com/heyitsme/mycontract"
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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"github.com/nspcc-dev/neo-go/pkg/interop/iterator"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/ledger"
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"github.com/nspcc-dev/neo-go/pkg/interop/neogointernal"
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"github.com/nspcc-dev/neo-go/pkg/interop/storage"
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)
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// Hash contains contract hash in big-endian form.
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const Hash = "\x04\x08\x15\x16\x23\x42\x43\x44\x00\x01\xca\xfe\xba\xbe\xde\xad\xbe\xef\x03\x04"
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// Sum invokes ` + "`sum`" + ` method of contract.
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func Sum(first int, second int) int {
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return neogointernal.CallWithToken(Hash, "sum", int(contract.All), first, second).(int)
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}
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// Sum_3 invokes ` + "`sum`" + ` method of contract.
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func Sum_3(first int, second int, third int) int {
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return neogointernal.CallWithToken(Hash, "sum", int(contract.All), first, second, third).(int)
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}
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// Sum3 invokes ` + "`sum3`" + ` method of contract.
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func Sum3() int {
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return neogointernal.CallWithToken(Hash, "sum3", int(contract.ReadOnly)).(int)
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}
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// JustExecute invokes ` + "`justExecute`" + ` method of contract.
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func JustExecute(arr []interface{}) {
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neogointernal.CallWithTokenNoRet(Hash, "justExecute", int(contract.All), arr)
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}
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// GetPublicKey invokes ` + "`getPublicKey`" + ` method of contract.
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func GetPublicKey() interop.PublicKey {
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return neogointernal.CallWithToken(Hash, "getPublicKey", int(contract.All)).(interop.PublicKey)
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}
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// OtherTypes invokes ` + "`otherTypes`" + ` method of contract.
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func OtherTypes(ctr interop.Hash160, tx interop.Hash256, sig interop.Signature, data interface{}) bool {
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return neogointernal.CallWithToken(Hash, "otherTypes", int(contract.All), ctr, tx, sig, data).(bool)
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}
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// EmptyName invokes ` + "`emptyName`" + ` method of contract.
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func EmptyName(arg0 map[string]interface{}) interface{} {
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return neogointernal.CallWithToken(Hash, "emptyName", int(contract.All), arg0).(interface{})
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}
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// SearchStorage invokes ` + "`searchStorage`" + ` method of contract.
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func SearchStorage(ctx storage.Context) iterator.Iterator {
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return neogointernal.CallWithToken(Hash, "searchStorage", int(contract.All), ctx).(iterator.Iterator)
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}
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// GetFromMap invokes ` + "`getFromMap`" + ` method of contract.
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func GetFromMap(intMap map[string]int, indices []string) []int {
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return neogointernal.CallWithToken(Hash, "getFromMap", int(contract.All), intMap, indices).([]int)
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}
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// DoSomething invokes ` + "`doSomething`" + ` method of contract.
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func DoSomething(bytes []byte, str string) interface{} {
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return neogointernal.CallWithToken(Hash, "doSomething", int(contract.ReadStates), bytes, str).(interface{})
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}
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// GetBlockWrapper invokes ` + "`getBlockWrapper`" + ` method of contract.
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func GetBlockWrapper() ledger.Block {
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return neogointernal.CallWithToken(Hash, "getBlockWrapper", int(contract.All)).(ledger.Block)
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}
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// MyFunc invokes ` + "`myFunc`" + ` method of contract.
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func MyFunc(in map[int]mycontract.Input) []mycontract.Output {
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return neogointernal.CallWithToken(Hash, "myFunc", int(contract.All), in).([]mycontract.Output)
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}
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`
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data, err := ioutil.ReadFile(outFile)
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require.NoError(t, err)
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require.Equal(t, expected, string(data))
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}
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func TestGenerateValidPackageName(t *testing.T) {
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m := manifest.NewManifest("My space\tcontract")
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m.ABI.Methods = append(m.ABI.Methods,
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manifest.Method{
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Name: "get",
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Parameters: []manifest.Parameter{},
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ReturnType: smartcontract.IntegerType,
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},
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)
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manifestFile := filepath.Join(t.TempDir(), "manifest.json")
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outFile := filepath.Join(t.TempDir(), "out.go")
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rawManifest, err := json.Marshal(m)
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require.NoError(t, err)
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require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
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h := util.Uint160{
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0x04, 0x08, 0x15, 0x16, 0x23, 0x42, 0x43, 0x44, 0x00, 0x01,
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0xCA, 0xFE, 0xBA, 0xBE, 0xDE, 0xAD, 0xBE, 0xEF, 0x03, 0x04,
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}
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app := cli.NewApp()
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app.Commands = []cli.Command{generateWrapperCmd}
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require.NoError(t, app.Run([]string{"", "generate-wrapper",
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"--manifest", manifestFile,
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"--out", outFile,
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"--hash", h.StringLE(),
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}))
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data, err := ioutil.ReadFile(outFile)
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require.NoError(t, err)
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require.Equal(t, `// Package myspacecontract contains wrappers for My space contract contract.
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package myspacecontract
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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"github.com/nspcc-dev/neo-go/pkg/interop/neogointernal"
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)
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// Hash contains contract hash in big-endian form.
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const Hash = "\x04\x08\x15\x16\x23\x42\x43\x44\x00\x01\xca\xfe\xba\xbe\xde\xad\xbe\xef\x03\x04"
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// Get invokes `+"`get`"+` method of contract.
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func Get() int {
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return neogointernal.CallWithToken(Hash, "get", int(contract.All)).(int)
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}
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`, string(data))
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}
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func TestGenerate_Errors(t *testing.T) {
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app := cli.NewApp()
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app.Commands = []cli.Command{generateWrapperCmd}
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app.ExitErrHandler = func(*cli.Context, error) {}
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checkError := func(t *testing.T, msg string, args ...string) {
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// cli.ExitError doesn't implement wraping properly, so we check for an error message.
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err := app.Run(append([]string{"", "generate-wrapper"}, args...))
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require.True(t, strings.Contains(err.Error(), msg), "got: %v", err)
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}
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t.Run("missing manifest argument", func(t *testing.T) {
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checkError(t, errNoManifestFile.Error())
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})
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t.Run("missing manifest file", func(t *testing.T) {
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checkError(t, "can't read contract manifest", "--manifest", "notexists")
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})
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t.Run("invalid manifest", func(t *testing.T) {
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manifestFile := filepath.Join(t.TempDir(), "invalid.json")
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require.NoError(t, ioutil.WriteFile(manifestFile, []byte("[]"), os.ModePerm))
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checkError(t, "", "--manifest", manifestFile)
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})
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manifestFile := filepath.Join(t.TempDir(), "manifest.json")
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m := manifest.NewManifest("MyContract")
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rawManifest, err := json.Marshal(m)
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require.NoError(t, err)
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require.NoError(t, ioutil.WriteFile(manifestFile, rawManifest, os.ModePerm))
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t.Run("invalid hash", func(t *testing.T) {
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checkError(t, "invalid contract hash", "--manifest", manifestFile, "--hash", "xxx")
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})
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t.Run("missing config", func(t *testing.T) {
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checkError(t, "can't read config file",
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"--manifest", manifestFile, "--hash", util.Uint160{}.StringLE(),
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"--config", filepath.Join(t.TempDir(), "not.exists.yml"))
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})
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t.Run("invalid config", func(t *testing.T) {
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rawCfg := `package: wrapper
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callflags:
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someFunc: ReadSometimes
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`
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cfgPath := filepath.Join(t.TempDir(), "binding.yml")
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require.NoError(t, ioutil.WriteFile(cfgPath, []byte(rawCfg), os.ModePerm))
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checkError(t, "can't parse config file",
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"--manifest", manifestFile, "--hash", util.Uint160{}.StringLE(),
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"--config", cfgPath)
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})
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}
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@ -179,6 +179,7 @@ func NewCommands() []cli.Command {
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Action: contractDeploy,
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Flags: deployFlags,
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},
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generateWrapperCmd,
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{
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Name: "invokefunction",
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Usage: "invoke deployed contract on the blockchain",
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|
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254
pkg/smartcontract/binding/generate.go
Normal file
254
pkg/smartcontract/binding/generate.go
Normal file
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@ -0,0 +1,254 @@
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package binding
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import (
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"bytes"
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"fmt"
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"io"
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"sort"
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"strconv"
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"strings"
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"text/template"
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"unicode"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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const srcTmpl = `
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{{- 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
75
pkg/smartcontract/binding/override.go
Normal file
|
|
@ -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
32
pkg/smartcontract/binding/override_test.go
Normal file
|
|
@ -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)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue