compiler: implement Ledger contract wrapper

pkg/interop/runtime/engine.go

@@ -2,38 +2,15 @@ package runtime
 
 import (
 	"github.com/nspcc-dev/neo-go/pkg/interop"
+	"github.com/nspcc-dev/neo-go/pkg/interop/native/ledger"
 )
 
-// Transaction represents a NEO transaction. It's similar to Transaction class
-// in Neo .net framework.
-type Transaction struct {
-	// Hash represents the hash (256 bit BE value in a 32 byte slice) of the
-	// given transaction (which also is its ID).
-	Hash interop.Hash256
-	// Version represents the transaction version.
-	Version int
-	// Nonce is a random number to avoid hash collision.
-	Nonce int
-	// Sender represents the sender (160 bit BE value in a 20 byte slice) of the
-	// given Transaction.
-	Sender interop.Hash160
-	// SysFee represents fee to be burned.
-	SysFee int
-	// NetFee represents fee to be distributed to consensus nodes.
-	NetFee int
-	// ValidUntilBlock is the maximum blockchain height exceeding which
-	// transaction should fail verification.
-	ValidUntilBlock int
-	// Script represents code to run in NeoVM for this transaction.
-	Script []byte
-}
-
 // GetScriptContainer returns the transaction that initially triggered current
 // execution context. It never changes in a single execution, no matter how deep
 // this execution goes. This function uses
 // `System.Runtime.GetScriptContainer` syscall.
-func GetScriptContainer() *Transaction {
-	return &Transaction{}
+func GetScriptContainer() *ledger.Transaction {
+	return &ledger.Transaction{}
 }
 
 // GetExecutingScriptHash returns script hash (160 bit in BE form represented