84 lines
2.9 KiB
Go
84 lines
2.9 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 (
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"errors"
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"fmt"
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)
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type HashedNode struct{}
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func (HashedNode) Insert([]byte, []byte, NodeResolverFn) error {
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return errInsertIntoHash
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}
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func (HashedNode) Delete([]byte, NodeResolverFn) (bool, error) {
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return false, errors.New("cant delete a hashed node in-place")
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}
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func (HashedNode) Get([]byte, NodeResolverFn) ([]byte, error) {
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return nil, errors.New("can not read from a hash node")
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}
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func (HashedNode) Commit() *Point {
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// TODO: we should reconsider what to do with the VerkleNode interface and how
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// HashedNode fits into the picture, since Commit(), Commitment() and Hash()
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// now panics. Despite these calls must not happen at runtime, it is still
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// quite risky. The reason we end up in this place is because PBSS came quite
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// recently compared with the VerkleNode interface design. We should probably
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// reconsider splitting the interface or find some safer workaround.
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panic("can not commit a hash node")
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}
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func (HashedNode) Commitment() *Point {
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panic("can not get commitment of a hash node")
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}
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func (HashedNode) GetProofItems(keylist, NodeResolverFn) (*ProofElements, []byte, []Stem, error) {
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return nil, nil, nil, errors.New("can not get the full path, and there is no proof of absence")
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}
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func (HashedNode) Serialize() ([]byte, error) {
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return nil, errSerializeHashedNode
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}
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func (HashedNode) Copy() VerkleNode {
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return HashedNode{}
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}
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func (HashedNode) toDot(parent, path string) string {
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return fmt.Sprintf("hash%s [label=\"unresolved\"]\n%s -> hash%s\n", path, parent, path)
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}
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func (HashedNode) setDepth(_ byte) {
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// do nothing
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}
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func (HashedNode) Hash() *Fr {
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panic("can not hash a hashed node")
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}
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