37f7363386
`Transaction`, `Block` and `Contract` are represented as
`Array`s in VM, so we must return pointers.
Revert a1f98f92.
105 lines
4 KiB
Go
105 lines
4 KiB
Go
/*
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Package blockchain provides functions to access various blockchain data.
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*/
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package blockchain
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import (
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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)
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// Transaction represents a NEO transaction. It's similar to Transaction class
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// in Neo .net framework.
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type Transaction struct {
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// Hash represents the hash (256 bit BE value in a 32 byte slice) of the
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// given transaction (which also is its ID).
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Hash interop.Hash256
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// Version represents the transaction version.
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Version int
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// Nonce is a random number to avoid hash collision.
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Nonce int
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// Sender represents the sender (160 bit BE value in a 20 byte slice) of the
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// given Transaction.
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Sender interop.Hash160
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// SysFee represents fee to be burned.
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SysFee int
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// NetFee represents fee to be distributed to consensus nodes.
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NetFee int
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// ValidUntilBlock is the maximum blockchain height exceeding which
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// transaction should fail verification.
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ValidUntilBlock int
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// Script represents code to run in NeoVM for this transaction.
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Script []byte
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}
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// Block represents a NEO block, it's a data structure that you can get
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// block-related data from. It's similar to the Block class in the Neo .net
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// framework. To use it you need to get it via GetBlock function call.
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type Block struct {
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// Hash represents the hash (256 bit BE value in a 32 byte slice) of the
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// given block.
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Hash interop.Hash256
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// Version of the block.
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Version int
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// PrevHash represents the hash (256 bit BE value in a 32 byte slice) of the
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// previous block.
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PrevHash interop.Hash256
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// MerkleRoot represents the root hash (256 bit BE value in a 32 byte slice)
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// of a transaction list.
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MerkleRoot interop.Hash256
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// Timestamp represents millisecond-precision block timestamp.
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Timestamp int
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// Index represents the height of the block.
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Index int
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// NextConsensus represents contract address of the next miner (160 bit BE
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// value in a 20 byte slice).
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NextConsensus interop.Hash160
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// TransactionsLength represents the length of block's transactions array.
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TransactionsLength int
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}
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// GetHeight returns current block height (index of the last accepted block).
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// Note that when transaction is being run as a part of new block this block is
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// considered as not yet accepted (persisted) and thus you'll get an index of
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// the previous (already accepted) block. This function uses
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// `System.Blockchain.GetHeight` syscall.
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func GetHeight() int {
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return 0
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}
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// GetBlock returns block found by the given hash or index (with the same
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// encoding as for GetHeader). This function uses `System.Blockchain.GetBlock`
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// syscall.
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func GetBlock(heightOrHash interface{}) *Block {
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return &Block{}
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}
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// GetTransaction returns transaction found by the given hash (256 bit in BE
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// format represented as a slice of 32 bytes). This function uses
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// `System.Blockchain.GetTransaction` syscall.
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func GetTransaction(hash interop.Hash256) *Transaction {
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return &Transaction{}
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}
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// GetTransactionFromBlock returns transaction hash (256 bit in BE format
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// represented as a slice of 32 bytes) from the block found by the given hash or
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// index (with the same encoding as for GetHeader) by its index. This
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// function uses `System.Blockchain.GetTransactionFromBlock` syscall.
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func GetTransactionFromBlock(heightOrHash interface{}, index int) interop.Hash256 {
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return nil
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}
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// GetTransactionHeight returns transaction's height (index of the block that
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// includes it) by the given ID (256 bit in BE format represented as a slice of
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// 32 bytes). This function uses `System.Blockchain.GetTransactionHeight` syscall.
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func GetTransactionHeight(hash interop.Hash256) int {
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return 0
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}
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// GetContract returns contract found by the given script hash (160 bit in BE
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// format represented as a slice of 20 bytes). Refer to the `contract` package
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// for details on how to use the returned structure. This function uses
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// `System.Blockchain.GetContract` syscall.
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func GetContract(scriptHash interop.Hash160) *contract.Contract {
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return &contract.Contract{}
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}
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