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Modified Abigen to Support Vyper (#19120)

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This commit is contained in:
Kushagra Sharma 2019-03-18 12:29:26 +00:00 committed by Guillaume Ballet
parent 47c03c0f8c
commit fb458280d1
8 changed files with 317 additions and 56 deletions
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36
cmd/abigen/main.go
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@ -1,4 +1,4 @@
// Copyright 2016 The go-ethereum Authors
// Copyright 2019 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
@ -37,6 +37,9 @@ var (
solcFlag = flag.String("solc", "solc", "Solidity compiler to use if source builds are requested")
excFlag = flag.String("exc", "", "Comma separated types to exclude from binding")
vyFlag = flag.String("vy", "", "Path to the Ethereum contract Vyper source to build and bind")
vyperFlag = flag.String("vyper", "vyper", "Vyper compiler to use if source builds are requested")
pkgFlag = flag.String("pkg", "", "Package name to generate the binding into")
outFlag = flag.String("out", "", "Output file for the generated binding (default = stdout)")
langFlag = flag.String("lang", "go", "Destination language for the bindings (go, java, objc)")
@ -46,11 +49,14 @@ func main() {
// Parse and ensure all needed inputs are specified
flag.Parse()
if *abiFlag == "" && *solFlag == "" {
fmt.Printf("No contract ABI (--abi) or Solidity source (--sol) specified\n")
if *abiFlag == "" && *solFlag == "" && *vyFlag == "" {
fmt.Printf("No contract ABI (--abi), Solidity source (--sol), or Vyper source (--vy) specified\n")
os.Exit(-1)
} else if (*abiFlag != "" || *binFlag != "" || *typFlag != "") && *solFlag != "" {
fmt.Printf("Contract ABI (--abi), bytecode (--bin) and type (--type) flags are mutually exclusive with the Solidity source (--sol) flag\n")
} else if (*abiFlag != "" || *binFlag != "" || *typFlag != "") && (*solFlag != "" || *vyFlag != "") {
fmt.Printf("Contract ABI (--abi), bytecode (--bin) and type (--type) flags are mutually exclusive with the Solidity (--sol) and Vyper (--vy) flags\n")
os.Exit(-1)
} else if *solFlag != "" && *vyFlag != "" {
fmt.Printf("Solidity (--sol) and Vyper (--vy) flags are mutually exclusive\n")
os.Exit(-1)
}
if *pkgFlag == "" {
@ -75,7 +81,7 @@ func main() {
bins []string
types []string
)
if *solFlag != "" || (*abiFlag == "-" && *pkgFlag == "") {
if *solFlag != "" || *vyFlag != "" || (*abiFlag == "-" && *pkgFlag == "") {
// Generate the list of types to exclude from binding
exclude := make(map[string]bool)
for _, kind := range strings.Split(*excFlag, ",") {
@ -84,13 +90,21 @@ func main() {
var contracts map[string]*compiler.Contract
var err error
if *solFlag != "" {
switch {
case *solFlag != "":
contracts, err = compiler.CompileSolidity(*solcFlag, *solFlag)
if err != nil {
fmt.Printf("Failed to build Solidity contract: %v\n", err)
os.Exit(-1)
}
} else {
case *vyFlag != "":
contracts, err = compiler.CompileVyper(*vyperFlag, *vyFlag)
if err != nil {
fmt.Printf("Failed to build Vyper contract: %v\n", err)
os.Exit(-1)
}
default:
contracts, err = contractsFromStdin()
if err != nil {
fmt.Printf("Failed to read input ABIs from STDIN: %v\n", err)
@ -102,7 +116,11 @@ func main() {
if exclude[strings.ToLower(name)] {
continue
}
abi, _ := json.Marshal(contract.Info.AbiDefinition) // Flatten the compiler parse
abi, err := json.Marshal(contract.Info.AbiDefinition) // Flatten the compiler parse
if err != nil {
fmt.Printf("Failed to parse ABIs from compiler output: %v\n", err)
os.Exit(-1)
}
abis = append(abis, string(abi))
bins = append(bins, contract.Code)

64
common/compiler/helpers.go Normal file
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@ -0,0 +1,64 @@
// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Package compiler wraps the Solidity and Vyper compiler executables (solc; vyper).
package compiler
import (
"bytes"
"io/ioutil"
"regexp"
)
var versionRegexp = regexp.MustCompile(`([0-9]+)\.([0-9]+)\.([0-9]+)`)
// Contract contains information about a compiled contract, alongside its code and runtime code.
type Contract struct {
Code string `json:"code"`
RuntimeCode string `json:"runtime-code"`
Info ContractInfo `json:"info"`
}
// ContractInfo contains information about a compiled contract, including access
// to the ABI definition, source mapping, user and developer docs, and metadata.
//
// Depending on the source, language version, compiler version, and compiler
// options will provide information about how the contract was compiled.
type ContractInfo struct {
Source string `json:"source"`
Language string `json:"language"`
LanguageVersion string `json:"languageVersion"`
CompilerVersion string `json:"compilerVersion"`
CompilerOptions string `json:"compilerOptions"`
SrcMap interface{} `json:"srcMap"`
SrcMapRuntime string `json:"srcMapRuntime"`
AbiDefinition interface{} `json:"abiDefinition"`
UserDoc interface{} `json:"userDoc"`
DeveloperDoc interface{} `json:"developerDoc"`
Metadata string `json:"metadata"`
}
func slurpFiles(files []string) (string, error) {
var concat bytes.Buffer
for _, file := range files {
content, err := ioutil.ReadFile(file)
if err != nil {
return "", err
}
concat.Write(content)
}
return concat.String(), nil
}

46
common/compiler/solidity.go
View File

@ -1,4 +1,4 @@
// Copyright 2015 The go-ethereum Authors
// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
@ -14,7 +14,7 @@
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Package compiler wraps the Solidity compiler executable (solc).
// Package compiler wraps the Solidity and Vyper compiler executables (solc; vyper).
package compiler
import (
@ -22,41 +22,11 @@ import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"os/exec"
"regexp"
"strconv"
"strings"
)
var versionRegexp = regexp.MustCompile(`([0-9]+)\.([0-9]+)\.([0-9]+)`)
// Contract contains information about a compiled contract, alongside its code and runtime code.
type Contract struct {
Code string `json:"code"`
RuntimeCode string `json:"runtime-code"`
Info ContractInfo `json:"info"`
}
// ContractInfo contains information about a compiled contract, including access
// to the ABI definition, source mapping, user and developer docs, and metadata.
//
// Depending on the source, language version, compiler version, and compiler
// options will provide information about how the contract was compiled.
type ContractInfo struct {
Source string `json:"source"`
Language string `json:"language"`
LanguageVersion string `json:"languageVersion"`
CompilerVersion string `json:"compilerVersion"`
CompilerOptions string `json:"compilerOptions"`
SrcMap string `json:"srcMap"`
SrcMapRuntime string `json:"srcMapRuntime"`
AbiDefinition interface{} `json:"abiDefinition"`
UserDoc interface{} `json:"userDoc"`
DeveloperDoc interface{} `json:"developerDoc"`
Metadata string `json:"metadata"`
}
// Solidity contains information about the solidity compiler.
type Solidity struct {
Path, Version, FullVersion string
@ -208,15 +178,3 @@ func ParseCombinedJSON(combinedJSON []byte, source string, languageVersion strin
}
return contracts, nil
}
func slurpFiles(files []string) (string, error) {
var concat bytes.Buffer
for _, file := range files {
content, err := ioutil.ReadFile(file)
if err != nil {
return "", err
}
concat.Write(content)
}
return concat.String(), nil
}

6
common/compiler/solidity_test.go
View File

@ -1,4 +1,4 @@
// Copyright 2015 The go-ethereum Authors
// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
@ -39,7 +39,7 @@ func skipWithoutSolc(t *testing.T) {
}
}
func TestCompiler(t *testing.T) {
func TestSolidityCompiler(t *testing.T) {
skipWithoutSolc(t)
contracts, err := CompileSolidityString("", testSource)
@ -67,7 +67,7 @@ func TestCompiler(t *testing.T) {
}
}
func TestCompileError(t *testing.T) {
func TestSolidityCompileError(t *testing.T) {
skipWithoutSolc(t)
contracts, err := CompileSolidityString("", testSource[4:])

3
common/compiler/test.v.py Normal file
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@ -0,0 +1,3 @@
@public
def test():
hello: int128

3
common/compiler/test_bad.v.py Normal file
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@ -0,0 +1,3 @@
lic
def test():
hello: int128

144
common/compiler/vyper.go Normal file
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@ -0,0 +1,144 @@
// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// Package compiler wraps the Solidity and Vyper compiler executables (solc; vyper).
package compiler
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"os/exec"
"strconv"
"strings"
)
// Vyper contains information about the vyper compiler.
type Vyper struct {
Path, Version, FullVersion string
Major, Minor, Patch int
}
func (s *Vyper) makeArgs() []string {
p := []string{
"-f", "combined_json",
}
return p
}
// VyperVersion runs vyper and parses its version output.
func VyperVersion(vyper string) (*Vyper, error) {
if vyper == "" {
vyper = "vyper"
}
var out bytes.Buffer
cmd := exec.Command(vyper, "--version")
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
return nil, err
}
matches := versionRegexp.FindStringSubmatch(out.String())
if len(matches) != 4 {
return nil, fmt.Errorf("can't parse vyper version %q", out.String())
}
s := &Vyper{Path: cmd.Path, FullVersion: out.String(), Version: matches[0]}
if s.Major, err = strconv.Atoi(matches[1]); err != nil {
return nil, err
}
if s.Minor, err = strconv.Atoi(matches[2]); err != nil {
return nil, err
}
if s.Patch, err = strconv.Atoi(matches[3]); err != nil {
return nil, err
}
return s, nil
}
// CompileVyper compiles all given Vyper source files.
func CompileVyper(vyper string, sourcefiles ...string) (map[string]*Contract, error) {
if len(sourcefiles) == 0 {
return nil, errors.New("vyper: no source files")
}
source, err := slurpFiles(sourcefiles)
if err != nil {
return nil, err
}
s, err := VyperVersion(vyper)
if err != nil {
return nil, err
}
args := s.makeArgs()
cmd := exec.Command(s.Path, append(args, sourcefiles...)...)
return s.run(cmd, source)
}
func (s *Vyper) run(cmd *exec.Cmd, source string) (map[string]*Contract, error) {
var stderr, stdout bytes.Buffer
cmd.Stderr = &stderr
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
return nil, fmt.Errorf("vyper: %v\n%s", err, stderr.Bytes())
}
return ParseVyperJSON(stdout.Bytes(), source, s.Version, s.Version, strings.Join(s.makeArgs(), " "))
}
// ParseVyperJSON takes the direct output of a vyper --f combined_json run and
// parses it into a map of string contract name to Contract structs. The
// provided source, language and compiler version, and compiler options are all
// passed through into the Contract structs.
//
// The vyper output is expected to contain ABI and source mapping.
//
// Returns an error if the JSON is malformed or missing data, or if the JSON
// embedded within the JSON is malformed.
func ParseVyperJSON(combinedJSON []byte, source string, languageVersion string, compilerVersion string, compilerOptions string) (map[string]*Contract, error) {
var output map[string]interface{}
if err := json.Unmarshal(combinedJSON, &output); err != nil {
return nil, err
}
// Compilation succeeded, assemble and return the contracts.
contracts := make(map[string]*Contract)
for name, info := range output {
// Parse the individual compilation results.
if name == "version" {
continue
}
c := info.(map[string]interface{})
contracts[name] = &Contract{
Code: c["bytecode"].(string),
RuntimeCode: c["bytecode_runtime"].(string),
Info: ContractInfo{
Source: source,
Language: "Vyper",
LanguageVersion: languageVersion,
CompilerVersion: compilerVersion,
CompilerOptions: compilerOptions,
SrcMap: c["source_map"],
SrcMapRuntime: "",
AbiDefinition: c["abi"],
UserDoc: "",
DeveloperDoc: "",
Metadata: "",
},
}
}
return contracts, nil
}

71
common/compiler/vyper_test.go Normal file
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@ -0,0 +1,71 @@
// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package compiler
import (
"os/exec"
"testing"
)
func skipWithoutVyper(t *testing.T) {
if _, err := exec.LookPath("vyper"); err != nil {
t.Skip(err)
}
}
func TestVyperCompiler(t *testing.T) {
skipWithoutVyper(t)
testSource := []string{"test.v.py"}
source, err := slurpFiles(testSource)
if err != nil {
t.Error("couldn't read test files")
}
contracts, err := CompileVyper("", testSource...)
if err != nil {
t.Fatalf("error compiling test.v.py. result %v: %v", contracts, err)
}
if len(contracts) != 1 {
t.Errorf("one contract expected, got %d", len(contracts))
}
c, ok := contracts["test.v.py"]
if !ok {
c, ok = contracts["<stdin>:test"]
if !ok {
t.Fatal("info for contract 'test.v.py' not present in result")
}
}
if c.Code == "" {
t.Error("empty code")
}
if c.Info.Source != source {
t.Error("wrong source")
}
if c.Info.CompilerVersion == "" {
t.Error("empty version")
}
}
func TestVyperCompileError(t *testing.T) {
skipWithoutVyper(t)
contracts, err := CompileVyper("", "test_bad.v.py")
if err == nil {
t.Errorf("error expected compiling test_bad.v.py. got none. result %v", contracts)
}
t.Logf("error: %v", err)
}