fix config template for precompilegen (#538)

* fix config template for precompilegen

* nits

* nit

* nits

Author: Darioush Jalali

accounts/abi/bind/precompilebind/precompile_config_template.go

@@ -24,8 +24,8 @@ import (
 
 var _ precompileconfig.Config = &Config{}
 
-// Config implements the StatefulPrecompileConfig
-// interface while adding in the {{.Contract.Type}} specific precompile address.
+// Config implements the precompileconfig.Config interface and
+// adds specific configuration for {{.Contract.Type}}.
 type Config struct {
 	{{- if .Contract.AllowList}}
 	allowlist.AllowListConfig
@@ -35,38 +35,15 @@ type Config struct {
 	// Add your own custom fields for Config here
 }
 
-{{$structs := .Structs}}
-{{range $structs}}
-	// {{.Name}} is an auto generated low-level Go binding around an user-defined struct.
-	type {{.Name}} struct {
-	{{range $field := .Fields}}
-	{{$field.Name}} {{$field.Type}}{{end}}
-	}
-{{- end}}
-
-{{- range .Contract.Funcs}}
-{{ if len .Normalized.Inputs | lt 1}}
-type {{capitalise .Normalized.Name}}Input struct{
-{{range .Normalized.Inputs}} {{capitalise .Name}} {{bindtype .Type $structs}}; {{end}}
-}
-{{- end}}
-{{ if len .Normalized.Outputs | lt 1}}
-type {{capitalise .Normalized.Name}}Output struct{
-{{range .Normalized.Outputs}} {{capitalise .Name}} {{bindtype .Type $structs}}; {{end}}
-}
-{{- end}}
-{{- end}}
-
 // NewConfig returns a config for a network upgrade at [blockTimestamp] that enables
-// {{.Contract.Type}} with the given [admins] and [enableds] as members of the allowlist.
-// {{.Contract.Type}} {{if .Contract.AllowList}} with the given [admins] as members of the allowlist {{end}}.
+// {{.Contract.Type}} {{- if .Contract.AllowList}} with the given [admins] as members of the allowlist {{end}}.
 func NewConfig(blockTimestamp *big.Int{{if .Contract.AllowList}}, admins []common.Address, enableds []common.Address,{{end}}) *Config {
 	return &Config{
 		{{- if .Contract.AllowList}}
 		AllowListConfig: allowlist.AllowListConfig{
 			AdminAddresses: admins,
 			EnabledAddresses: enableds,
-			},
+		},
 		{{- end}}
 		Upgrade: precompileconfig.Upgrade{BlockTimestamp: blockTimestamp},
 	}
@@ -89,12 +66,12 @@ func (*Config) Key() string { return ConfigKey }
 
 // Verify tries to verify Config and returns an error accordingly.
 func (c *Config) Verify() error {
-	{{if .Contract.AllowList}}
+	{{- if .Contract.AllowList}}
 	// Verify AllowList first
 	if err := c.AllowListConfig.Verify(); err != nil {
 		return err
 	}
-	{{end}}
+	{{- end}}
 	// CUSTOM CODE STARTS HERE
 	// Add your own custom verify code for Config here
 	// and return an error accordingly
@@ -110,8 +87,8 @@ func (c *Config) Equal(s precompileconfig.Config) bool {
 	}
 	// CUSTOM CODE STARTS HERE
 	// modify this boolean accordingly with your custom Config, to check if [other] and the current [c] are equal
-	// if Config contains only Upgrade {{if .Contract.AllowList}} and AllowListConfig {{end}} you can skip modifying it.
-	equals := c.Upgrade.Equal(&other.Upgrade) {{if .Contract.AllowList}} && c.AllowListConfig.Equal(&other.AllowListConfig) {{end}}
+	// if Config contains only Upgrade {{- if .Contract.AllowList}} and AllowListConfig {{end}} you can skip modifying it.
+	equals := c.Upgrade.Equal(&other.Upgrade) {{- if .Contract.AllowList}} && c.AllowListConfig.Equal(&other.AllowListConfig) {{end}}
 	return equals
 }
 `

accounts/abi/bind/precompilebind/precompile_contract_template.go

@@ -52,7 +52,7 @@ const (
 	{{- if .Contract.AllowList}}
 	// This contract also uses AllowList precompile.
 	// You should also increase gas costs of functions that read from AllowList storage.
-	{{- end}}}
+	{{- end}}
 	{{- range .Contract.Funcs}}
 	{{.Normalized.Name}}GasCost uint64 = 0 {{if not .Original.IsConstant | and $contract.AllowList}} + allowlist.ReadAllowListGasCost {{end}}	// SET A GAS COST HERE
 	{{- end}}
@@ -136,7 +136,7 @@ func Set{{.Contract.Type}}AllowListStatus(stateDB contract.StateDB, address comm
 
 {{range .Contract.Funcs}}
 {{if len .Normalized.Inputs | lt 1}}
-// Unpack{{capitalise .Normalized.Name}}Input attempts to unpack [input] into the arguments for the {{capitalise .Normalized.Name}}Input{}
+// Unpack{{capitalise .Normalized.Name}}Input attempts to unpack [input] as {{capitalise .Normalized.Name}}Input
 // assumes that [input] does not include selector (omits first 4 func signature bytes)
 func Unpack{{capitalise .Normalized.Name}}Input(input []byte) ({{capitalise .Normalized.Name}}Input, error) {
 	inputStruct := {{capitalise .Normalized.Name}}Input{}
@@ -298,7 +298,7 @@ func {{decapitalise $contract.Type}}Fallback (accessibleState contract.Accessibl
 {{- end}}
 
 // create{{.Contract.Type}}Precompile returns a StatefulPrecompiledContract with getters and setters for the precompile.
-{{if .Contract.AllowList}} // Access to the getters/setters is controlled by an allow list for ContractAddress.{{end}}
+{{- if .Contract.AllowList}} // Access to the getters/setters is controlled by an allow list for ContractAddress.{{end}}
 func create{{.Contract.Type}}Precompile() contract.StatefulPrecompiledContract {
 	var functions []*contract.StatefulPrecompileFunction
 	{{- if .Contract.AllowList}}

accounts/abi/bind/precompilebind/precompile_module_template.go

@@ -65,11 +65,11 @@ func (*configurator) Configure(chainConfig contract.ChainConfig, cfg precompilec
 		return fmt.Errorf("incorrect config %T: %v", config, config)
 	}
 	// CUSTOM CODE STARTS HERE
-	{{if .Contract.AllowList}}
+	{{- if .Contract.AllowList}}
 	// AllowList is activated for this precompile. Configuring allowlist addresses here.
 	return config.AllowListConfig.Configure(state, ContractAddress)
-	{{else}}
+	{{- else}}
 	return nil
-	{{end}}
+	{{- end}}
 }
 `