go-ethereum/libevm/pseudo/constructor.go
Arran Schlosberg dc619990f5
doc: licensing of libevm additions and modifications (#34)
* doc: licensing of libevm extensions and modifications

* chore: add license headers via linter

* chore: `golangci-lint run --fix`

* chore: `golangci-lint run --fix`

* chore: fix `libevm/libevm.go` header

* chore: `s/extensions/additions/`

* chore: add missing headers
2024-09-19 21:38:26 +00:00

39 lines
1.3 KiB
Go

// Copyright 2024 the libevm authors.
//
// The libevm additions to go-ethereum are free software: you can redistribute
// them and/or modify them 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 libevm additions are distributed in the hope that they 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 pseudo
// A Constructor returns newly constructed [Type] instances for a pre-registered
// concrete type.
type Constructor interface {
Zero() *Type
NewPointer() *Type
NilPointer() *Type
}
// NewConstructor returns a [Constructor] that builds `T` [Type] instances.
func NewConstructor[T any]() Constructor {
return ctor[T]{}
}
type ctor[T any] struct{}
func (ctor[T]) Zero() *Type { return Zero[T]().Type }
func (ctor[T]) NilPointer() *Type { return Zero[*T]().Type }
func (ctor[T]) NewPointer() *Type {
var x T
return From(&x).Type
}