Class MerkleTreeParser

Hierarchy

MerkleTreeParser

Index

Methods

Methods

encodePath

encodePath(path: Uint8Array, nibbleCount: number, isLeaf: boolean): Uint8Array

- Defined in model/state/MerkleTreeParser.ts:156
Encode path depends on node type and nibble count

Parameters
- path: Uint8Array
  
  path buffer
- nibbleCount: number
  
  number of nibbles
- isLeaf: boolean
  
  is leaf node
Returns Uint8Array

encoded path

getBitsFromMask

getBitsFromMask(mask: any): string[]

- Defined in model/state/MerkleTreeParser.ts:29
Decompose a bitmask to get number of bit's indices

Parameters
- mask: any
  
  bitmask
Returns string[]

array of the indices of bits

getBranchHash

getBranchHash(encodedPath: string, links: MerkleTreeBranchLink[]): string

- Defined in model/state/MerkleTreeParser.ts:190
Calculate branch hash. Hash(encodedPath + 16 links)

Parameters
- encodedPath: string
  
  encoded path of the branch in hexadecimal format
- links: MerkleTreeBranchLink[]
  
  branch links array
Returns string

branch hash (Hash(encodedPath + links))

getLeafHash

getLeafHash(encodedPath: string, leafValue: any): string

- Defined in model/state/MerkleTreeParser.ts:207
Calculate leaf hash. Hash(encodedPath + leaf value)

Parameters
- encodedPath: string
  
  encoded path of the leaf in hexadecimal format
- leafValue: any
  
  leaf value
Returns string

leaf hash (Hash(encodedPath + leaf value))

getPathLength

getPathLength(nibbleCount: any): number

- Defined in model/state/MerkleTreeParser.ts:48
Calculate path length from given nibbles count

Parameters
- nibbleCount: any
  
  Nibbles count
Returns number

the length of the path

isBranch

isBranch(marker: any): boolean

- Defined in model/state/MerkleTreeParser.ts:59
Is branch node

Parameters
- marker: any
  
  node marker
Returns boolean

if tree node is branch

isLeaf

isLeaf(marker: any): boolean

- Defined in model/state/MerkleTreeParser.ts:68
Is leaf node

Parameters
- marker: any
  
  node marker
Returns boolean

if tree node is leaf

nibbleAt

nibbleAt(path: Uint8Array, index: number): number

- Defined in model/state/MerkleTreeParser.ts:179
Get byte at given nibble index

Parameters
- path: Uint8Array
  
  path buffer
- index: number
  
  nibble index
Returns number

byte

parseBranch

parseBranch(offsetRaw: Uint8Array, path: Uint8Array, nibbleCount: number): [Uint8Array, MerkleTreeBranch]

- Defined in model/state/MerkleTreeParser.ts:103
Parse branch tree node

Parameters
- offsetRaw: Uint8Array
  
  partial raw buffer
- path: Uint8Array
  
  merkle tree path
- nibbleCount: number
  
  number of nibbles
Returns [Uint8Array, MerkleTreeBranch]

unprocess raw buffer

parseLeaf

parseLeaf(offsetRaw: Uint8Array, path: Uint8Array, nibbleCount: number): [Uint8Array, MerkleTreeLeaf]

- Defined in model/state/MerkleTreeParser.ts:135
Parse leaf tree node

Parameters
- offsetRaw: Uint8Array
  
  partial raw buffer
- path: Uint8Array
  
  merkle tree path
- nibbleCount: number
  
  number of nibbles
Returns [Uint8Array, MerkleTreeLeaf]

unprocess raw buffer

parseMerkleTreeFromRaw

parseMerkleTreeFromRaw(raw: Uint8Array): (MerkleTreeBranch | MerkleTreeLeaf)[]

- Defined in model/state/MerkleTreeParser.ts:77
Recursively parse raw tree

Parameters
- raw: Uint8Array
  
  raw tree buffer
Returns (MerkleTreeBranch | MerkleTreeLeaf)[]

merkle tree

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