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104 lines
3.8 KiB
Go
104 lines
3.8 KiB
Go
package config
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//go:generate stringer -type=Hardfork -linecomment
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// Hardfork represents the application hard-fork identifier.
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type Hardfork byte
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// HFDefault is a default value of Hardfork enum. It's a special constant
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// aimed to denote the node code enabled by default starting from the
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// genesis block. HFDefault is not a hard-fork, but this constant can be used for
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// convenient hard-forks comparison and to refer to the default hard-fork-less
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// node behaviour.
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const HFDefault Hardfork = 0 // Default
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const (
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// HFAspidochelone represents hard-fork introduced in #2469 (ported from
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// https://github.com/neo-project/neo/pull/2712) and #2519 (ported from
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// https://github.com/neo-project/neo/pull/2749).
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HFAspidochelone Hardfork = 1 << iota // Aspidochelone
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// HFBasilisk represents hard-fork introduced in #3056 (ported from
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// https://github.com/neo-project/neo/pull/2881), #3080 (ported from
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// https://github.com/neo-project/neo/pull/2883) and #3085 (ported from
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// https://github.com/neo-project/neo/pull/2810).
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HFBasilisk // Basilisk
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// HFCockatrice represents hard-fork introduced in #3402 (ported from
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// https://github.com/neo-project/neo/pull/2942), #3301 (ported from
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// https://github.com/neo-project/neo/pull/2925) and #3362 (ported from
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// https://github.com/neo-project/neo/pull/3154).
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HFCockatrice // Cockatrice
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// HFDomovoi represents hard-fork introduced in #3476 (ported from
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// https://github.com/neo-project/neo/pull/3290). It makes the`node use
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// executing contract state for the contract call permissions check instead
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// of the state stored in the native Management. This change was introduced
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// in [#3473](https://github.com/nspcc-dev/neo-go/pull/3473) and ported to
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// the [reference](https://github.com/neo-project/neo/pull/3290). Also, this
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// hard-fork makes the System.Runtime.GetNotifications interop properly
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// count stack references of notification parameters which prevents users
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// from creating objects that exceed [vm.MaxStackSize] constraint. This
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// change is implemented in the
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// [reference](https://github.com/neo-project/neo/pull/3301), but NeoGo has
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// never had this bug, thus proper behaviour is preserved even before
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// HFDomovoi. It results in the fact that some T5 transactions have
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// different ApplicationLogs comparing to the C# node, but the node states
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// match. See #3485 for details.
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HFDomovoi // Domovoi
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// HFEchidna represents hard-fork introduced in #3554 (ported from
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// https://github.com/neo-project/neo/pull/3454).
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HFEchidna // Echidna
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// hfLast denotes the end of hardforks enum. Consider adding new hardforks
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// before hfLast.
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hfLast
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)
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// Hardforks represents the ordered slice of all possible hardforks.
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var Hardforks []Hardfork
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// hardforks holds a map of Hardfork string representation to its type.
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var hardforks map[string]Hardfork
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func init() {
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for i := HFAspidochelone; i < hfLast; i = i << 1 {
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Hardforks = append(Hardforks, i)
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}
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hardforks = make(map[string]Hardfork, len(Hardforks))
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for _, hf := range Hardforks {
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hardforks[hf.String()] = hf
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}
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}
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// Cmp returns the result of hardforks comparison. It returns:
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//
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// -1 if hf < other
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// 0 if hf == other
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// +1 if hf > other
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func (hf Hardfork) Cmp(other Hardfork) int {
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switch {
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case hf == other:
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return 0
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case hf < other:
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return -1
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default:
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return 1
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}
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}
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// Prev returns the previous hardfork for the given one. Calling Prev for the default hardfork is a no-op.
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func (hf Hardfork) Prev() Hardfork {
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if hf == HFDefault {
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panic("unexpected call to Prev for the default hardfork")
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}
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return hf >> 1
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}
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// IsHardforkValid denotes whether the provided string represents a valid
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// Hardfork name.
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func IsHardforkValid(s string) bool {
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_, ok := hardforks[s]
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return ok
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}
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// LatestHardfork returns latest known hardfork.
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func LatestHardfork() Hardfork {
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return hfLast >> 1
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}
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