forked from TrueCloudLab/neoneo-go
53 lines
2.2 KiB
Go
53 lines
2.2 KiB
Go
package trigger
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import (
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"fmt"
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"strings"
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)
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//go:generate stringer -type=Type -output=trigger_type_string.go
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// Type represents a trigger type used in C# reference node: https://github.com/neo-project/neo/blob/c64748ecbac3baeb8045b16af0d518398a6ced24/neo/SmartContract/TriggerType.cs#L3
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type Type byte
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// Viable list of supported trigger type constants.
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const (
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// OnPersist is a trigger type that indicates that the script is being invoked
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// internally by the system during block persistence (before transaction
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// processing).
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OnPersist Type = 0x01
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// PostPersist is a trigger type that indicates that the script is being invoked
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// by the system after block persistence (transcation processing) has
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// finished.
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PostPersist Type = 0x02
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// The verification trigger indicates that the contract is being invoked as a verification function.
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// The verification function can accept multiple parameters and should return a boolean value that indicates the validity of the transaction or block.
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// The entry point of the contract will be invoked if the contract is triggered by Verification:
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// main(...);
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// The entry point of the contract must be able to handle this type of invocation.
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Verification Type = 0x20
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// The application trigger indicates that the contract is being invoked as an application function.
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// The application function can accept multiple parameters, change the states of the blockchain, and return any type of value.
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// The contract can have any form of entry point, but we recommend that all contracts should have the following entry point:
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// public byte[] main(string operation, params object[] args)
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// The functions can be invoked by creating an InvocationTransaction.
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Application Type = 0x40
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// All represents any trigger type.
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All Type = OnPersist | PostPersist | Verification | Application
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)
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// FromString converts a string to the trigger Type.
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func FromString(str string) (Type, error) {
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triggers := []Type{OnPersist, PostPersist, Verification, Application, All}
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str = strings.ToLower(str)
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for _, t := range triggers {
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if strings.ToLower(t.String()) == str {
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return t, nil
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}
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}
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return 0, fmt.Errorf("unknown trigger type: %s", str)
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}
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