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https://github.com/nspcc-dev/neo-go.git
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ac527650eb
But don't change the way we process/store transactions and blocks. Effectively it's just an interface for smart contracts that replaces old syscalls. Transaction definition is moved temporarily to runtime package and Block definition is removed (till we solve #1691 properly).
133 lines
3.4 KiB
Go
133 lines
3.4 KiB
Go
package native
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import (
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"strings"
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"github.com/nspcc-dev/neo-go/pkg/core/interop"
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"github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/emit"
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)
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// reservedContractID represents the upper bound of the reserved IDs for native contracts.
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const reservedContractID = -100
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// Contracts is a set of registered native contracts.
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type Contracts struct {
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Management *Management
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Ledger *Ledger
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NEO *NEO
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GAS *GAS
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Policy *Policy
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Oracle *Oracle
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Designate *Designate
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NameService *NameService
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Notary *Notary
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Contracts []interop.Contract
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// persistScript is vm script which executes "onPersist" method of every native contract.
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persistScript []byte
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// postPersistScript is vm script which executes "postPersist" method of every native contract.
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postPersistScript []byte
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}
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// ByHash returns native contract with the specified hash.
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func (cs *Contracts) ByHash(h util.Uint160) interop.Contract {
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for _, ctr := range cs.Contracts {
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if ctr.Metadata().Hash.Equals(h) {
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return ctr
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}
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}
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return nil
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}
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// ByName returns native contract with the specified name.
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func (cs *Contracts) ByName(name string) interop.Contract {
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name = strings.ToLower(name)
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for _, ctr := range cs.Contracts {
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if strings.ToLower(ctr.Metadata().Name) == name {
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return ctr
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}
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}
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return nil
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}
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// NewContracts returns new set of native contracts with new GAS, NEO, Policy, Oracle,
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// Designate and (optional) Notary contracts.
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func NewContracts(p2pSigExtensionsEnabled bool) *Contracts {
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cs := new(Contracts)
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mgmt := newManagement()
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cs.Management = mgmt
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cs.Contracts = append(cs.Contracts, mgmt)
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ledger := newLedger()
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cs.Ledger = ledger
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cs.Contracts = append(cs.Contracts, ledger)
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gas := newGAS()
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neo := newNEO()
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neo.GAS = gas
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gas.NEO = neo
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mgmt.NEO = neo
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cs.GAS = gas
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cs.NEO = neo
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cs.Contracts = append(cs.Contracts, neo)
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cs.Contracts = append(cs.Contracts, gas)
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policy := newPolicy()
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policy.NEO = neo
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cs.Policy = policy
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cs.Contracts = append(cs.Contracts, policy)
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desig := newDesignate(p2pSigExtensionsEnabled)
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desig.NEO = neo
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cs.Designate = desig
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cs.Contracts = append(cs.Contracts, desig)
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oracle := newOracle()
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oracle.GAS = gas
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oracle.NEO = neo
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oracle.Desig = desig
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cs.Oracle = oracle
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cs.Contracts = append(cs.Contracts, oracle)
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ns := newNameService()
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ns.NEO = neo
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cs.NameService = ns
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cs.Contracts = append(cs.Contracts, ns)
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if p2pSigExtensionsEnabled {
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notary := newNotary()
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notary.GAS = gas
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notary.NEO = neo
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notary.Desig = desig
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cs.Notary = notary
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cs.Contracts = append(cs.Contracts, notary)
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}
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return cs
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}
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// GetPersistScript returns VM script calling "onPersist" syscall for native contracts.
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func (cs *Contracts) GetPersistScript() []byte {
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if cs.persistScript != nil {
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return cs.persistScript
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}
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w := io.NewBufBinWriter()
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emit.Syscall(w.BinWriter, interopnames.SystemContractNativeOnPersist)
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cs.persistScript = w.Bytes()
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return cs.persistScript
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}
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// GetPostPersistScript returns VM script calling "postPersist" syscall for native contracts.
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func (cs *Contracts) GetPostPersistScript() []byte {
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if cs.postPersistScript != nil {
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return cs.postPersistScript
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}
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w := io.NewBufBinWriter()
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emit.Syscall(w.BinWriter, interopnames.SystemContractNativePostPersist)
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cs.postPersistScript = w.Bytes()
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return cs.postPersistScript
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}
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