79 lines
2.4 KiB
Go
79 lines
2.4 KiB
Go
// This is free and unencumbered software released into the public domain.
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//
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// Anyone is free to copy, modify, publish, use, compile, sell, or
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// distribute this software, either in source code form or as a compiled
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// binary, for any purpose, commercial or non-commercial, and by any
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// means.
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//
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// In jurisdictions that recognize copyright laws, the author or authors
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// of this software dedicate any and all copyright interest in the
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// software to the public domain. We make this dedication for the benefit
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// of the public at large and to the detriment of our heirs and
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// successors. We intend this dedication to be an overt act of
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// relinquishment in perpetuity of all present and future rights to this
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// software under copyright law.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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// For more information, please refer to <https://unlicense.org>
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package verkle
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import "errors"
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type Empty struct{}
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var errDirectInsertIntoEmptyNode = errors.New("an empty node should not be inserted directly into")
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func (Empty) Insert([]byte, []byte, NodeResolverFn) error {
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return errDirectInsertIntoEmptyNode
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}
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func (Empty) Delete([]byte, NodeResolverFn) (bool, error) {
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return false, errors.New("cant delete an empty node")
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}
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func (Empty) Get([]byte, NodeResolverFn) ([]byte, error) {
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return nil, nil
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}
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func (n Empty) Commit() *Point {
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return n.Commitment()
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}
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func (Empty) Commitment() *Point {
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var id Point
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id.SetIdentity()
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return &id
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}
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func (Empty) GetProofItems(keylist, NodeResolverFn) (*ProofElements, []byte, []Stem, error) {
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return nil, nil, nil, errors.New("trying to produce a commitment for an empty subtree")
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}
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func (Empty) Serialize() ([]byte, error) {
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return nil, errors.New("can't encode empty node to RLP")
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}
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func (Empty) Copy() VerkleNode {
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return Empty(struct{}{})
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}
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func (Empty) toDot(string, string) string {
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return ""
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}
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func (Empty) setDepth(_ byte) {
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panic("should not be try to set the depth of an Empty node")
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}
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func (Empty) Hash() *Fr {
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return &FrZero
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}
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