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accounts/abi/bind, cmd/abigen: port to templates, bind to solidity

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This commit is contained in:
Péter Szilágyi
2016-03-21 14:34:49 +02:00
parent 86cfc22c79
commit 73308dbe0e
10 changed files with 595 additions and 449 deletions
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84
cmd/abigen/main.go
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@ -17,53 +17,97 @@
package main
import (
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"os"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common/compiler"
)
var (
abiFlag = flag.String("abi", "", "Path to the Ethereum contract ABI json to bind")
binFlag = flag.String("bin", "", "Path to the Ethereum contract bytecode (generate deploy method)")
pkgFlag = flag.String("pkg", "", "Go package name to generate the binding into")
typFlag = flag.String("type", "", "Go struct name for the binding (default = package name)")
outFlag = flag.String("out", "", "Output path for the generated binding (default = stdout)")
solFlag = flag.String("sol", "", "Path to the Ethereum contract Solidity source to build and bind")
solcFlag = flag.String("solc", "solc", "Solidity compiler to use if source builds are requested")
pkgFlag = flag.String("pkg", "", "Go package name to generate the binding into")
outFlag = flag.String("out", "", "Output file for the generated binding (default = stdout)")
)
func main() {
// Parse and validate the command line flags
// Parse and ensure all needed inputs are specified
flag.Parse()
if *abiFlag == "" {
fmt.Printf("No contract ABI path specified (--abi)\n")
if *abiFlag == "" && *solFlag == "" {
fmt.Printf("No contract ABI (--abi) or Solidity source (--sol) 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")
os.Exit(-1)
}
if *pkgFlag == "" {
fmt.Printf("No destination Go package specified (--pkg)\n")
os.Exit(-1)
}
// Read the ABI json from disk and optionally the contract bytecode too
abi, err := ioutil.ReadFile(*abiFlag)
if err != nil {
fmt.Printf("Failed to read input ABI: %v\n", err)
os.Exit(-1)
}
bin := []byte{}
if *binFlag != "" {
if bin, err = ioutil.ReadFile(*binFlag); err != nil {
fmt.Printf("Failed to read input bytecode: %v\n", err)
// If the entire solidity code was specified, build and bind based on that
var (
abis []string
bins []string
types []string
)
if *solFlag != "" {
solc, err := compiler.New(*solcFlag)
if err != nil {
fmt.Printf("Failed to locate Solidity compiler: %v\n", err)
os.Exit(-1)
}
source, err := ioutil.ReadFile(*solFlag)
if err != nil {
fmt.Printf("Failed to read Soldity source code: %v\n", err)
os.Exit(-1)
}
contracts, err := solc.Compile(string(source))
if err != nil {
fmt.Printf("Failed to build Solidity contract: %v\n", err)
os.Exit(-1)
}
for name, contract := range contracts {
abi, _ := json.Marshal(contract.Info.AbiDefinition) // Flatten the compiler parse
abis = append(abis, string(abi))
bins = append(bins, contract.Code)
types = append(types, name)
}
} else {
// Otherwise load up the ABI, optional bytecode and type name from the parameters
abi, err := ioutil.ReadFile(*abiFlag)
if err != nil {
fmt.Printf("Failed to read input ABI: %v\n", err)
os.Exit(-1)
}
abis = append(abis, string(abi))
bin := []byte{}
if *binFlag != "" {
if bin, err = ioutil.ReadFile(*binFlag); err != nil {
fmt.Printf("Failed to read input bytecode: %v\n", err)
os.Exit(-1)
}
}
bins = append(bins, string(bin))
kind := *typFlag
if kind == "" {
kind = *pkgFlag
}
types = append(types, kind)
}
// Generate the contract binding
kind := *typFlag
if kind == "" {
kind = *pkgFlag
}
code, err := bind.Bind(string(abi), string(bin), *pkgFlag, kind)
code, err := bind.Bind(types, abis, bins, *pkgFlag)
if err != nil {
fmt.Printf("Failed to generate ABI binding: %v\n", err)
os.Exit(-1)