config: move config.go out of config/

closes #423

pkg/config/protocol_config.go

@@ -0,0 +1,90 @@
+package config
+
+import (
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+)
+
+const (
+	// ModeMainNet contains magic code used in the NEO main official network.
+	ModeMainNet NetMode = 0x00746e41 // 7630401
+	// ModeTestNet contains magic code used in the NEO testing network.
+	ModeTestNet NetMode = 0x74746e41 // 1953787457
+	// ModePrivNet contains magic code usually used for NEO private networks.
+	ModePrivNet NetMode = 56753 // docker privnet
+	// ModeUnitTestNet is a stub magic code used for testing purposes.
+	ModeUnitTestNet NetMode = 0
+)
+
+// ProtocolConfiguration represents the protocol config.
+type (
+	ProtocolConfiguration struct {
+		AddressVersion byte `yaml:"AddressVersion"`
+		// FeePerExtraByte sets the expected per-byte fee for
+		// transactions exceeding the MaxFreeTransactionSize.
+		FeePerExtraByte float64 `yaml:"FeePerExtraByte"`
+		// FreeGasLimit is an amount of GAS which can be spent for free.
+		FreeGasLimit            util.Fixed8 `yaml:"FreeGasLimit"`
+		LowPriorityThreshold    float64     `yaml:"LowPriorityThreshold"`
+		Magic                   NetMode     `yaml:"Magic"`
+		MaxTransactionsPerBlock int         `yaml:"MaxTransactionsPerBlock"`
+		// Maximum size of low priority transaction in bytes.
+		MaxFreeTransactionSize int `yaml:"MaxFreeTransactionSize"`
+		// Maximum number of low priority transactions accepted into block.
+		MaxFreeTransactionsPerBlock int `yaml:"MaxFreeTransactionsPerBlock"`
+		MemPoolSize                 int `yaml:"MemPoolSize"`
+		// SaveStorageBatch enables storage batch saving before every persist.
+		SaveStorageBatch  bool      `yaml:"SaveStorageBatch"`
+		SecondsPerBlock   int       `yaml:"SecondsPerBlock"`
+		SeedList          []string  `yaml:"SeedList"`
+		StandbyValidators []string  `yaml:"StandbyValidators"`
+		SystemFee         SystemFee `yaml:"SystemFee"`
+		// Whether to verify received blocks.
+		VerifyBlocks bool `yaml:"VerifyBlocks"`
+		// Whether to verify transactions in received blocks.
+		VerifyTransactions bool `yaml:"VerifyTransactions"`
+	}
+
+	// SystemFee fees related to system.
+	SystemFee struct {
+		EnrollmentTransaction int64 `yaml:"EnrollmentTransaction"`
+		IssueTransaction      int64 `yaml:"IssueTransaction"`
+		PublishTransaction    int64 `yaml:"PublishTransaction"`
+		RegisterTransaction   int64 `yaml:"RegisterTransaction"`
+	}
+
+	// NetMode describes the mode the blockchain will operate on.
+	NetMode uint32
+)
+
+// String implements the stringer interface.
+func (n NetMode) String() string {
+	switch n {
+	case ModePrivNet:
+		return "privnet"
+	case ModeTestNet:
+		return "testnet"
+	case ModeMainNet:
+		return "mainnet"
+	case ModeUnitTestNet:
+		return "unit_testnet"
+	default:
+		return "net unknown"
+	}
+}
+
+// TryGetValue returns the system fee base on transaction type.
+func (s SystemFee) TryGetValue(txType transaction.TXType) util.Fixed8 {
+	switch txType {
+	case transaction.EnrollmentType:
+		return util.Fixed8FromInt64(s.EnrollmentTransaction)
+	case transaction.IssueType:
+		return util.Fixed8FromInt64(s.IssueTransaction)
+	case transaction.PublishType:
+		return util.Fixed8FromInt64(s.PublishTransaction)
+	case transaction.RegisterType:
+		return util.Fixed8FromInt64(s.RegisterTransaction)
+	default:
+		return util.Fixed8FromInt64(0)
+	}
+}