Ori Newman aeb4b96560
[NOD-1451] Implement Validators (#966)
* [NOD-1451] Implement block validator

* [NOD-1451] Implement block validator

* [NOD-1451] Fix merge errors

* [NOD-1451] Implement block validator

* [NOD-1451] Implement checkTransactionInIsolation

* [NOD-1451] Copy txscript to validator

* [NOD-1451] Change txscript to new design

* [NOD-1451] Add checkTransactionInContext

* [NOD-1451] Add checkBlockSize

* [NOD-1451] Add error handling

* [NOD-1451] Implement checkTransactionInContext

* [NOD-1451] Add checkTransactionMass placeholder

* [NOD-1451] Finish validators

* [NOD-1451] Add comments and stringers

* [NOD-1451] Return model.TransactionValidator interface

* [NOD-1451] Premake rule errors for each "code"

* [NOD-1451] Populate transaction mass

* [NOD-1451] Renmae functions

* [NOD-1451] Always use skipPow=false

* [NOD-1451] Renames

* [NOD-1451] Remove redundant types from WriteElement

* [NOD-1451] Fix error message

* [NOD-1451] Add checkTransactionPayload

* [NOD-1451] Add ValidateProofOfWorkAndDifficulty to block validator interface

* [NOD-1451] Move stringers to model

* [NOD-1451] Fix error message
2020-10-26 17:33:39 +02:00

76 lines
2.2 KiB
Go

// Copyright (c) 2014-2016 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package txscript_test
import (
"encoding/hex"
"fmt"
"github.com/kaspanet/kaspad/domain/dagconfig"
"github.com/kaspanet/kaspad/domain/txscript"
"github.com/kaspanet/kaspad/util"
)
// This example demonstrates creating a script which pays to a kaspa address.
// It also prints the created script hex and uses the DisasmString function to
// display the disassembled script.
func ExamplePayToAddrScript() {
// Parse the address to send the coins to into a util.Address
// which is useful to ensure the accuracy of the address and determine
// the address type. It is also required for the upcoming call to
// PayToAddrScript.
addressStr := "kaspa:qqfgqp8l9l90zwetj84k2jcac2m8falvvyy8xjtnhd"
address, err := util.DecodeAddress(addressStr, util.Bech32PrefixKaspa)
if err != nil {
fmt.Println(err)
return
}
// Create a public key script that pays to the address.
script, err := txscript.PayToAddrScript(address)
if err != nil {
fmt.Println(err)
return
}
fmt.Printf("Script Hex: %x\n", script)
disasm, err := txscript.DisasmString(script)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Script Disassembly:", disasm)
// Output:
// Script Hex: 76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac
// Script Disassembly: OP_DUP OP_HASH160 128004ff2fcaf13b2b91eb654b1dc2b674f7ec61 OP_EQUALVERIFY OP_CHECKSIG
}
// This example demonstrates extracting information from a standard public key
// script.
func ExampleExtractScriptPubKeyAddress() {
// Start with a standard pay-to-pubkey-hash script.
scriptHex := "76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac"
script, err := hex.DecodeString(scriptHex)
if err != nil {
fmt.Println(err)
return
}
// Extract and print details from the script.
scriptClass, address, err := txscript.ExtractScriptPubKeyAddress(
script, &dagconfig.MainnetParams)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Script Class:", scriptClass)
fmt.Println("Address:", address)
// Output:
// Script Class: pubkeyhash
// Address: kaspa:qqfgqp8l9l90zwetj84k2jcac2m8falvvyy8xjtnhd
}