accounts/abi/bind, cmd/abigen: dedup structs, exclude patterns

accounts/abi/bind/template.go

@@ -148,8 +148,8 @@ package {{.Package}}
 
 	{{range .Calls}}
 		{{if .Structured}}
-			// {{.Normalized.Name}}Result is the result of the {{.Normalized.Name}} invocation."
+			// {{$contract.Type}}{{.Normalized.Name}}Result is the result of the {{.Normalized.Name}} invocation.
-			type {{.Normalized.Name}}Result struct {
+			type {{$contract.Type}}{{.Normalized.Name}}Result struct {
 					{{range .Normalized.Outputs}}{{.Name}} {{bindtype .Type}}
 					{{end}}
 			}
@@ -158,9 +158,9 @@ package {{.Package}}
 		// {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.Id}}.
 		//
 		// Solidity: {{.Original.String}}
-		func (_{{$contract.Type}} *{{$contract.Type}}Caller) {{.Normalized.Name}}(opts *bind.CallOpts {{range .Normalized.Inputs}}, {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}{{.Normalized.Name}}Result,{{else}}{{range .Normalized.Outputs}}{{bindtype .Type}},{{end}}{{end}} error) {
+		func (_{{$contract.Type}} *{{$contract.Type}}Caller) {{.Normalized.Name}}(opts *bind.CallOpts {{range .Normalized.Inputs}}, {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}{{$contract.Type}}{{.Normalized.Name}}Result,{{else}}{{range .Normalized.Outputs}}{{bindtype .Type}},{{end}}{{end}} error) {
 			var (
-				{{if .Structured}}ret = new({{.Normalized.Name}}Result){{else}}{{range $i, $_ := .Normalized.Outputs}}ret{{$i}} = new({{bindtype .Type}})
+				{{if .Structured}}ret = new({{$contract.Type}}{{.Normalized.Name}}Result){{else}}{{range $i, $_ := .Normalized.Outputs}}ret{{$i}} = new({{bindtype .Type}})
 				{{end}}{{end}}
 			)
 			out := {{if .Structured}}ret{{else}}{{if eq (len .Normalized.Outputs) 1}}ret0{{else}}[]interface{}{
@@ -174,14 +174,14 @@ package {{.Package}}
 		// {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.Id}}.
 		//
 		// Solidity: {{.Original.String}}
-		func (_{{$contract.Type}} *{{$contract.Type}}Session) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}{{.Normalized.Name}}Result, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type}},{{end}} {{end}} error) {
+		func (_{{$contract.Type}} *{{$contract.Type}}Session) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}{{$contract.Type}}{{.Normalized.Name}}Result, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type}},{{end}} {{end}} error) {
 		  return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.CallOpts {{range .Normalized.Inputs}}, {{.Name}}{{end}})
 		}
 
 		// {{.Normalized.Name}} is a free data retrieval call binding the contract method 0x{{printf "%x" .Original.Id}}.
 		//
 		// Solidity: {{.Original.String}}
-		func (_{{$contract.Type}} *{{$contract.Type}}CallerSession) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}{{.Normalized.Name}}Result, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type}},{{end}} {{end}} error) {
+		func (_{{$contract.Type}} *{{$contract.Type}}CallerSession) {{.Normalized.Name}}({{range $i, $_ := .Normalized.Inputs}}{{if ne $i 0}},{{end}} {{.Name}} {{bindtype .Type}} {{end}}) ({{if .Structured}}{{$contract.Type}}{{.Normalized.Name}}Result, {{else}} {{range .Normalized.Outputs}}{{bindtype .Type}},{{end}} {{end}} error) {
 		  return _{{$contract.Type}}.Contract.{{.Normalized.Name}}(&_{{$contract.Type}}.CallOpts {{range .Normalized.Inputs}}, {{.Name}}{{end}})
 		}
 	{{end}}

cmd/abigen/main.go

@@ -22,6 +22,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"strings"
 
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/ethereum/go-ethereum/common/compiler"
@@ -34,6 +35,7 @@ var (
 
 	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")
+	excFlag  = flag.String("exc", "", "Comma separated types to exclude from binding")
 
 	pkgFlag = flag.String("pkg", "", "Go package name to generate the binding into")
 	outFlag = flag.String("out", "", "Output file for the generated binding (default = stdout)")
@@ -61,6 +63,12 @@ func main() {
 		types []string
 	)
 	if *solFlag != "" {
+		// Generate the list of types to exclude from binding
+		exclude := make(map[string]bool)
+		for _, kind := range strings.Split(*excFlag, ",") {
+			exclude[strings.ToLower(kind)] = true
+		}
+		// Build the Solidity source into bindable components
 		solc, err := compiler.New(*solcFlag)
 		if err != nil {
 			fmt.Printf("Failed to locate Solidity compiler: %v\n", err)
@@ -76,7 +84,11 @@ func main() {
 			fmt.Printf("Failed to build Solidity contract: %v\n", err)
 			os.Exit(-1)
 		}
+		// Gather all non-excluded contract for binding
 		for name, contract := range contracts {
+			if exclude[strings.ToLower(name)] {
+				continue
+			}
 			abi, _ := json.Marshal(contract.Info.AbiDefinition) // Flatten the compiler parse
 			abis = append(abis, string(abi))
 			bins = append(bins, contract.Code)