Merge pull request #1 from openrelayxyz/develop

Develop

core/interface.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"math/big"
 	"time"
+
 	"github.com/holiman/uint256"
 )
 
@@ -58,7 +59,6 @@ type Backend interface {
 	// Engine() consensus.Engine
 }
 
-
 type OpCode byte
 
 type TracerResult interface {
@@ -66,7 +66,34 @@ type TracerResult interface {
 	CaptureState(pc uint64, op OpCode, gas, cost uint64, scope ScopeContext, rData []byte, depth int, err error)
 	CaptureFault(pc uint64, op OpCode, gas, cost uint64, scope ScopeContext, depth int, err error)
 	CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error)
-	Result() interface{}
+	Result() (interface{}, error)
+}
+
+type StateDB interface {
+	GetBalance(Address) *big.Int
+
+	GetNonce(Address) uint64
+
+	GetCodeHash(Address) Hash
+	GetCode(Address) []byte
+	GetCodeSize(Address) int
+
+	GetRefund() uint64
+
+	GetCommittedState(Address, Hash) Hash
+	GetState(Address, Hash) Hash
+
+	HasSuicided(Address) bool
+
+	// Exist reports whether the given account exists in state.
+	// Notably this should also return true for suicided accounts.
+	Exist(Address) bool
+	// Empty returns whether the given account is empty. Empty
+	// is defined according to EIP161 (balance = nonce = code = 0).
+	Empty(Address) bool
+
+	AddressInAccessList(addr Address) bool
+	SlotInAccessList(addr Address, slot Hash) (addressOk bool, slotOk bool)
 }
 
 type ScopeContext interface {
@@ -90,7 +117,6 @@ type Contract interface {
 	GetOp(n uint64) OpCode
 	GetByte(n uint64) byte
 	Caller() Address
-  UseGas(gas uint64) (ok bool)
 	Address() Address
 	Value() *big.Int
 }
@@ -107,7 +133,6 @@ type Progress interface{
 	KnownStates() uint64
 }
 
-
 type Node interface {
 	Server() Server
 	DataDir() string
@@ -118,12 +143,10 @@ type Node interface{
 	ResolvePath(x string) string
 }
 
-
 type Server interface {
 	PeerCount() int
 }
 
-
 type Logger interface {
 	Trace(string, ...interface{})
 	Debug(string, ...interface{})
@@ -136,5 +159,3 @@ type Logger interface {
 type PluginLoader interface {
 	Lookup(name string, validate func(interface{}) bool) []interface{}
 }
-
-