types.go

package ethrpc

import (
	"bytes"
	"math/big"
	"unsafe"
)

// Transaction - transaction object
type Transaction struct {
	Hash             string
	Nonce            int
	BlockHash        string
	BlockNumber      *int
	TransactionIndex *int
	From             string
	To               string
	Value            big.Int
	Gas              int
	GasPrice         big.Int
	Input            string
}

// Block - block object
type Block struct {
	Number           uint64
	Hash             string
	ParentHash       string
	Nonce            string
	Sha3Uncles       string
	LogsBloom        string
	TransactionsRoot string
	StateRoot        string
	Miner            string
	Difficulty       big.Int
	TotalDifficulty  big.Int
	ExtraData        string
	Size             int
	GasLimit         int
	GasUsed          int
	Timestamp        int
	Uncles           []string
	Transactions     []Transaction
}

type hexInt uint64

func (i *hexInt) UnmarshalJSON(data []byte) error {
	result, err := ParseInt(string(bytes.Trim(data, `"`)))
	*i = hexInt(result)

	return err
}

type hexBig big.Int

func (i *hexBig) UnmarshalJSON(data []byte) error {
	result, err := ParseBigInt(string(bytes.Trim(data, `"`)))
	*i = hexBig(result)

	return err
}

type proxyBlock interface {
	toBlock() Block
}

type proxyBlockWithTransactions struct {
	Number           hexInt             `json:"number"`
	Hash             string             `json:"hash"`
	ParentHash       string             `json:"parentHash"`
	Nonce            string             `json:"nonce"`
	Sha3Uncles       string             `json:"sha3Uncles"`
	LogsBloom        string             `json:"logsBloom"`
	TransactionsRoot string             `json:"transactionsRoot"`
	StateRoot        string             `json:"stateRoot"`
	Miner            string             `json:"miner"`
	Difficulty       hexBig             `json:"difficulty"`
	TotalDifficulty  hexBig             `json:"totalDifficulty"`
	ExtraData        string             `json:"extraData"`
	Size             hexInt             `json:"size"`
	GasLimit         hexInt             `json:"gasLimit"`
	GasUsed          hexInt             `json:"gasUsed"`
	Timestamp        hexInt             `json:"timestamp"`
	Uncles           []string           `json:"uncles"`
	Transactions     []proxyTransaction `json:"transactions"`
}

type proxyBlockWithoutTransactions struct {
	Number           hexInt   `json:"number"`
	Hash             string   `json:"hash"`
	ParentHash       string   `json:"parentHash"`
	Nonce            string   `json:"nonce"`
	Sha3Uncles       string   `json:"sha3Uncles"`
	LogsBloom        string   `json:"logsBloom"`
	TransactionsRoot string   `json:"transactionsRoot"`
	StateRoot        string   `json:"stateRoot"`
	Miner            string   `json:"miner"`
	Difficulty       hexBig   `json:"difficulty"`
	TotalDifficulty  hexBig   `json:"totalDifficulty"`
	ExtraData        string   `json:"extraData"`
	Size             hexInt   `json:"size"`
	GasLimit         hexInt   `json:"gasLimit"`
	GasUsed          hexInt   `json:"gasUsed"`
	Timestamp        hexInt   `json:"timestamp"`
	Uncles           []string `json:"uncles"`
	Transactions     []string `json:"transactions"`
}

func (proxy *proxyBlockWithoutTransactions) toBlock() Block {
	block := Block{
		Number:           uint64(proxy.Number),
		Hash:             proxy.Hash,
		ParentHash:       proxy.ParentHash,
		Nonce:            proxy.Nonce,
		Sha3Uncles:       proxy.Sha3Uncles,
		LogsBloom:        proxy.LogsBloom,
		TransactionsRoot: proxy.TransactionsRoot,
		StateRoot:        proxy.StateRoot,
		Miner:            proxy.Miner,
		Difficulty:       big.Int(proxy.Difficulty),
		TotalDifficulty:  big.Int(proxy.TotalDifficulty),
		ExtraData:        proxy.ExtraData,
		// #nosec G701 - copied file from 3rd library, always in range
		Size: int(proxy.Size),
		// #nosec G701 - copied file from 3rd library, always in range
		GasLimit: int(proxy.GasLimit),
		// #nosec G701 - copied file from 3rd library, always in range
		GasUsed: int(proxy.GasUsed),
		// #nosec G701 - copied file from 3rd library, always in range
		Timestamp: int(proxy.Timestamp),
		Uncles:    proxy.Uncles,
	}

	block.Transactions = make([]Transaction, len(proxy.Transactions))
	for i := range proxy.Transactions {
		block.Transactions[i] = Transaction{
			Hash: proxy.Transactions[i],
		}
	}

	return block
}

type proxyTransaction struct {
	Hash             string  `json:"hash"`
	Nonce            hexInt  `json:"nonce"`
	BlockHash        string  `json:"blockHash"`
	BlockNumber      *hexInt `json:"blockNumber"`
	TransactionIndex *hexInt `json:"transactionIndex"`
	From             string  `json:"from"`
	To               string  `json:"to"`
	Value            hexBig  `json:"value"`
	Gas              hexInt  `json:"gas"`
	GasPrice         hexBig  `json:"gasPrice"`
	Input            string  `json:"input"`
}

func (proxy *proxyBlockWithTransactions) toBlock() Block {
	// #nosec G103 - copied file from 3rd library, should be safe enough
	return *(*Block)(unsafe.Pointer(proxy))
}